TSB Laboratory Report LP149/2013

Appendix A: Tank car inspection results

Tables A-1 through A-63 summarize the results of the field inspection of the derailed Tank cars. Representative photographs of each Tank car are presented in Figures A-1 through A-63.

Abbreviations used in this appendix:

  • AL: A end, left side
  • AR: A end, right side
  • BL: B end, left side,
  • BR: B end, right side
  • BOV: bottom outlet valve
  • PRD: pressure relief device

All orientation observations are indicated from the perspective of facing the B end of the Tank car.

In some Tank cars, a “liquid-vapour line” was noted. This liquid-vapour line corresponds to a difference in the extent of fire damage sustained by the top and bottom portions of the tank as it came to rest. The top portion would have been in the vapour space during the post-derailment fire and thus more oxidized. The bottom portion was in the liquid space and had less fire damage due to the cooling effect of the liquid.

Tank car TILX 316547

Table A-1
Consist position 3
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its right side next to the box car, perpendicular to yard track 2.
Extent of fire damage The exterior finish of the car exhibited fire damage throughout. The tank surface was more oxidized and had a rusty colour above an inclined liquid/vapour line going from about 1/4 of the height on the B end to 1/3 of height on the A end.
Shell The top-left side of the shell adjacent to the B end exhibited a large dent with a rectangular depressed area and an approximately 2-foot long puncture in the middle.
Heads The A end head had no impact damage.
The top-left quadrant of the B end head contained a puncture with a piece of rail embedded in it. There was a second puncture of similar size adjacent to this puncture and a linear depression above it. Another piece of rail was stuck in a puncture in the BR bolster.
Bottom outlet valve The skid, BOV nozzle and handle assembly had no impact damage. The BOV handle was in the closed position but not locked as the securement mechanism was damaged.
Top fittings The housing cover was warped but still secured. There was no impact damage to the housing wall. The fittings inside the housing were not visible for inspection.
Pressure relief device The PRD was inside the housing and not visible for inspection.
Manway The manway cover was closed with all 6 bolts intact.
Stub sills and couplers No visible impact damage.

Figure A-1: Photographs showing the condition of tank car TILX 316547

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Tank car WFIX 130608

Table A-2
Consist position 4
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest on its left side next to car TILX 316547, approximately parallel to yard track 2.
Extent of fire damage The exterior finish of the car exhibited fire damage throughout. The tank surface was more oxidized above a liquid/vapour line located approximately mid-height.
Shell The shell contained an approximately 15-foot long longitudinal thermal tear on the right side between the middle and the A end.
Heads No impact damage on either head.
Bottom outlet valve The skid, BOV nozzle and handle assembly had no impact damage. The BOV handle was in the closed and secured position.
Top fittings The wall of the housing was deformed. The housing cover was torn due to impact damage but it was still closed and secured. There was no visible damage to the fittings inside the housing.
Pressure relief device The PRD was inside the housing and not visible for inspection.
Manway The manway cover was closed with all 6 bolts intact.
Stub sills and couplers No visible impact damage.

Figure A-2: Photographs showing the condition of tank car WFIX 130608

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Tank car TILX 316359

Table A-3
Consist position 5
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest nearly upside down with its B end still coupled to the B end of car WFIX 130608, approximately parallel to yard track 2.
Extent of fire damage The exterior finish of the car exhibited fire damage throughout. The tank surface was more oxidized above an inclined liquid/vapour line going from about ¾ of the height on the B end to nearly the top of the A end.
Shell The top of the shell contained some shallow dents near the A end. The shell near the AL bolster was visibly bulged. The bulged region was located above the liquid/vapour line.
Heads There was no impact damage on the A end head.
The B end head was slightly dented around its top edge.
Bottom outlet valve The skid, BOV nozzle and handle assembly had no impact damage. The BOV handle was in the closed and secured position.
Top fittings The cover of the housing was deformed inwards but still attached. The fittings inside the housing were not visible for inspection.
Pressure relief device The PRD was inside the housing and not visible for inspection.
Manway The manway cover was open with all 6 bolts intact. It was likely opened for product recovery.
Stub sills and couplers Both stub sills were slightly deformed.

Figure A-3: Photographs showing the condition of tank car TILX 316359

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Tank car TILX 316338

Table A-4
Consist position 6
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest on its left side approximately parallel to yard track 2.
Extent of fire damage The exterior finish of the car exhibited fire damage throughout. There was no difference in extent of oxidation indicative of a liquid/vapour line.
Shell No impact damage was noted.
Heads The A end head had a piece of rail embedded on the left side at about mid-height.
The B end head had no impact damage.
Bottom outlet valve The skid, BOV nozzle and handle assembly had no impact damage. The BOV handle was in the closed and secured position.
Top fittings The cover of the housing was askew and deformed. It was found in the closed position with the pin unsecured. There was extensive fire damage on the cover and housing.
Pressure relief device The PRD was inside the housing and not visible for inspection.
Manway The manway cover was open with all 6 bolts intact. It was likely opened for product recovery.
Stub sills and couplers No significant impact damage on either end. A separated coupler from car NATX 310428 was still attached to the B end coupler of car TILX 316338.

Figure A-4: Photographs showing the condition of tank car TILX 316338

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Tank car NATX 310428

Table A-5
Consist position 7
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its bottom-left side angled relative to car TILX 316338 and yard track 2.
Extent of fire damage The exterior finish of the car exhibited fire damage throughout. The tank surface was more oxidized above a liquid/vapour line located at about 2/3 of the head height.
Shell The shell contained an angled dent on the right side between the middle and the A end.
Heads The A end head has a gouge and small puncture on its right edge at about mid-height.
The B end head has a small dent on its right edge at about mid-height.
Bottom outlet valve The fabricated skid was unremarkable. The BOV nozzle and chain were still attached but covered with product residue. The BOV handle was deformed and had pulled out of its connection with the valve just inside the skid.
Top fittings The housing had separated at the hinge and was missing. The top fitting nozzles were sheared off.
Pressure relief device The PRD was plugged with debris but externally appeared undamaged.
Manway The manway cover was open and all 8 bolts were released with 1 bolt slightly bent. The manway cover was closed on aerial photographs confirming it was opened during recovery operations.
Stub sills and couplers Both stub sills were slightly deformed. The B end coupler was missing and was found still attached to car TILX 316338.

Figure A-5: Photographs showing the condition of tank car NATX 310428

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Tank car CTCX 735541

Table A-6
Consist position 8
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its right side approximately parallel to yard track 3. The A end of the car was still coupled to the B end of car DBUX 303879.
Extent of fire damage The exterior finish of the car was blackened throughout with a rusty patch covering a large portion of the B end.
Shell The shell contained a dent on the top-right near the A end.
Heads The A end head has a puncture on its right edge at about mid-height.
The B end head has a dent on its bottom-right quadrant.
Bottom outlet valve The cast skid was unremarkable. The BOV adaptor had sheared off at the flange, exposing a closed ball valve. The handle was secured in the closed position. Signs of light seepage were noted on the ball valve.
Top fittings The housing was deformed due to impact and was displaced laterally. It was found in the closed position but unsecured. One of the fittings inside the housing was impact damaged (bent) the others were not visible for inspection.
Pressure relief device No visible impact damage.
Manway The manway cover was open. 2 of the 6 bolts were missing and 1 bolt was bent. The cover was closed on aerial photographs of the derailment site indicating that it was opened during recovery operations.
Stub sills and couplers No visible impact damage.

Figure A-6: Photographs showing the condition of tank car CTCX 735541

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Tank car DBUX 303879

Table A-7
Consist position 9
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest on its left side approximately parallel to yard track 3. The B end of the car was still coupled to the A end of car CTCX 735541.
Extent of fire damage The exterior finish of the car was extensively burned throughout with white/red surface oxides.
Shell The shell contained a deep angular dent on the top-left near the B end. There was a shallow dent on the top-left near the head-to-shell junction at the A end.
Heads The A end head had a large dent in the top-right quadrant. It also had a gouge and small puncture at its left edge, aligned with a similar gouge and puncture on the B end of car CTCX 735541 (see Figure A-6c).
The B end head is unremarkable.
Bottom outlet valve The skid, BOV nozzle and handle assembly had no impact damage. The BOV handle was in the closed and secured position.
Top fittings The housing was deformed, torn and hanging from one side of the hinge. The fittings had no visible impact. A 2-inch ball valve had been removed after the derailment and was hanging from its chain.
Pressure relief device No visible impact damage.
Manway The manway cover was open with 1 of the 6 bolts missing. The gasket was burnt. The cover was closed on aerial photographs of the derailment site indicating that it was opened during recovery operations.
Stub sills and couplers No visible impact damage.

Figure A-7: Photographs showing the condition of tank car DBUX 303879

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Tank car WFIX 130682

Table A-8
Consist position 10
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its left side between the west leg of the wye and yard track 3, angled with respect to the west leg of the wye.
Extent of fire damage The exterior finish of the car was undamaged by the fire, with all stencils and decals intact.
Shell The shell contained a shallow transverse dent along the left side in the middle. There was longitudinal scraping along the right side of the car with a shallow dent at the A end.
Heads The A en contained a small dent in the upper-right quadrant surrounded by fresh gouges and scrape marks.
The B end head contained a dent at its right edge at approximately mid-height.
Bottom outlet valve The skid, BOV nozzle and handle assembly had no impact damage. The BOV handle was in the closed and secured position.
Top fittings The housing cover was open when examined by TSB but photographs taken by the RSI-AAR Safety Project team indicate it was closed and secured when the car came to rest.
The fittings inside had no visible impact damage. It was noted that the housing was partly filled with product after the derailment, suggesting some fittings may have released product.
Pressure relief device No visible impact damage.
Manway The manway cover was open with all 6 bolts intact. It was opened during recovery operations as it had been found closed after the derailment.
Stub sills and couplers Both stub sills were slightly deformed.

Figure A-8: Photographs showing the condition of tank car WFIX 130682

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Tank car TILX 316641

Table A-9
Consist position 11
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest on its left side forward of the main pileup and parallel to the west leg of the wye. The B end of the car was still coupled to the B end of car TILX 316570.
Extent of fire damage The exterior finish of the car was blackened due to fire damage. Some markings were still partly visible.
Shell Some longitudinal scrape marks on the bottom but no dents or other impact damage.
Heads No impact damage.
Bottom outlet valve The skid, BOV nozzle and handle assembly had no impact damage. The BOV handle was in the closed and secured position.
Top fittings No impact damage to housing wall and cover; the cover was closed and secured. The fittings inside the housing were not visible for inspection.
Pressure relief device The PRD was inside the closed housing and not visible for inspection.
Manway The manway cover was open with all 6 bolts intact. It was opened during recovery operations as it had been found closed after the derailment.
Stub sills and couplers The A end stub sill was slightly bent to the left.
The B end stub sill was unremarkable.

Figure A-9: Photographs showing the condition of tank car TILX 316641

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Tank car TILX 316570

Table A-10
Consist position 12
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its right side just forward of the main pileup and parallel to the west leg of the wye. The B end of the car was still coupled to the B end of car TILX 316641.
Extent of fire damage The exterior finish of the car exhibited fire damage throughout. The tank surface was more oxidized above a liquid/vapour line located approximately mid-height.
Shell The shell was significantly buckled between the A end and the middle with a large rupture on its left side in the buckled zone.
Heads The A end head had a large dent near the top with a smaller dent below.
The B end head was unremarkable.
Bottom outlet valve The fabricated skid had no impact damage.
The BOV nozzle was intact but the handle assembly had separated at the connection with the valve, inside the skid.
Top fittings The cover of the housing was deformed, damaged at the hinge and had pulled out of its locking mechanism. The cover fell off when the car was staged. The housing was partially filled with dirt but visible fittings had no visible impact damage.
Pressure relief device No visible impact damage.
Manway The manway cover was closed with 1 bolt loose and the other 5 bolts intact.
Stub sills and couplers Two rails were embedded in the AR bolster.
The A end stub sill was slightly bent to the right. The B end stub sill was unremarkable.

Figure A-10: Photographs showing the condition of tank car TILX 316570

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Tank car NATX 310457

Table A-11
Consist position 13
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upside down at the forward end of the pile-up, oriented perpendicularly to the west leg of the wye.
Extent of fire damage The car exhibited extensive fire damage with a rusty colour in the less damaged ends and blistering and metal loss near the top fittings.
Shell The shell contained a large dent on the AR side corresponding to the location where the car impacted the A end of car TILX 316570. There was a matching dent on the AL side where the car was squeezed between car WFIX 130638 and car TILX 316570 (see Figure A10e).
There was a dent on the left side near the B end.
Heads No impact damage.
Bottom outlet valve The fabricated skid and BOV nozzle did not exhibit any impact damage. The handle was in the closed position and the extension and elbow were intact; however, the handle itself and the locking pin assembly were impact damaged.
Top fittings The housing was missing and the fittings had sheared off and the eduction pipe was partly pulled out of the tank.
Pressure relief device The PRD was plugged with dirt but there was no visible impact damage.
Manway The manway cover was closed with 1 bolt loose and the other 7 bolts intact.
Stub sills and couplers The A end stub sill was slightly bent to the left.
The B end stub sill was extensively deformed to the left.

Figure A-11: Photographs showing the condition of tank car NATX 310457

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Tank car WFIX 130638

Table A-12
Consist position 14
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest nearly upside down in the forward part of the pile-up, oriented perpendicularly to the west leg of the wye.
Extent of fire damage The car exhibited extensive fire damage with a more reddish discolouration near the transverse rupture in the shell.
Shell The top of the shell contained a deep dent with a large transverse rupture in the first ring from the B end. This rupture was not associated with a weld. The shell also exhibited a longitudinal buckle along most of its length. The AR side of the shell and the AR bolster were impact damaged.
Heads The A end head had a large dent near the top.
The B end head was unremarkable.
Bottom outlet valve The fabricated skid exhibited impact damage and scoring on its right side. The BOV adaptor had sheared-off at the flange, exposing a closed and oxidized (fire damaged) BOV ball. The BOV handle had separated at its connection with the valve and was missing.
Top fittings The housing cover was slightly deformed and askew but still secured. Some debris was observed inside the housing but the condition of the fittings could not be determined as they were not visible.
Pressure relief device The PRD was not visible for inspection.
Manway The manway cover was closed with 1 bolt loose and the other 5 bolts intact.
Stub sills and couplers The A end stub sill was slightly bent to the left.
The B end stub sill was bent to the left. Both stub sills had some impact damage.

Figure A-12: Photographs showing the condition of tank car WFIX 130638

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Tank car NATX 310473

Table A-13
Consist position 15
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its right side in the forward part of the pile-up, oriented perpendicularly to the west leg of the wye.
Extent of fire damage The exterior finish of the car exhibited fire damage throughout. The tank surface was more oxidized above a liquid/vapour line inclined from about mid-height on the B end to below mid-mid-height on the A end.
Shell The shell was buckled/dented on its top-left side near the A end and on its top-left side near the B end. There was a narrow angled dent with a small puncture on the BL side near the B end.
Heads The A end head had 3 small shallow dents near the edge of the top-left quadrant.
The B end head had a large dent near the top and a smaller dent on its right side. It also contained a dent and a puncture near the edge of the lower-left quadrant (at about 8 o'clock).
Bottom outlet valve The fabricated skid and BOV nozzle did not exhibit any impact damage. The handle was in the closed position and secured. However, the extension and support brackets were impact damaged and some product seepage was noted inside the skid.
Top fittings The housing was missing and both nozzles were sheared; 1 nozzle was hanging from its end cap chain.
Pressure relief device The PRD was plugged with dirt but had no visible impact damage.
Manway The manway cover was open with 1 of the 8 bolts and lugs broken. The cover was closed when the car came to rest and had been opened during recovery operations.
Stub sills and couplers The A end stub sill was bent to the right.
The B end stub sill was bent slightly upwards.

Figure A-13: Photographs showing the condition of tank car NATX 310473

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Tank car TILX 316379

Table A-14
Consist position 16
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its left side in the forward part of the pile-up, oriented perpendicularly to the west leg of the wye.
Extent of fire damage The exterior finish of the car exhibited fire damage throughout. The tank surface was more oxidized with a rusty colour above a liquid/vapour line inclined from about ¾ height on the B end to the top of the A end.
Shell The top half of the shell contained several bulges/buckles.
Heads The A end head had a large shallow dent on the right edge (where it joins the shell) and a small dent in the lower right quadrant.
The B end head was unremarkable.
Bottom outlet valve The fabricated skid exhibited impact damage and scoring on its right side. The BOV adaptor had sheared-off at the flange, exposing a BOV ball that was partly covered by a product residue. After wiping the BOV ball to remove some of this residue, it was observed to be closed and possibly seeping. The BOV handle had separated at its connection with the valve and was missing.
Top fittings The housing cover was deformed and askew with the locking pin unsecured. There was no visible impact damage to the fittings inside; however, the fittings and housing a reddish colour indicative of extensive fire damage.
Pressure relief device No visible impact damage.
Manway The manway cover was found beside the staged car. The hinge and 2 of the 6 bolts were broken.
Stub sills and couplers The A end stub sill was unremarkable.
The B end coupler had separated and the stub sill was deformed (impact damaged).

Figure A-14: Photographs showing the condition of tank car TILX 316379

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Tank car ACFX 79709

Table A-15
Consist position 17
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its left side in the forward part of the pile-up, oriented perpendicularly to the west leg of the wye.
Extent of fire damage The exterior finish of the car was fire damaged though some paint was still visible on the left side.
Shell The top and sides of the shell were deformed inwards. There was a long transverse rupture in the top of the 4th shell section from the B end. The AR side near the A end contained a longitudinal dent with a small puncture just above it. This dent extended to the edge of the A end head.
Heads The A end head was unremarkable.
The B end head had multiple dents with a small puncture in the top-right dent near the edge.
Bottom outlet valve The BOV was intact with its handle closed and secured.
Top fittings The housing was missing and both nozzles were sheared. The housing hinge sheared off and cover is missing.
Pressure relief device One of the 2 PRDs exhibited minor impact damage (broken bolt). The other PRD was unremarkable.
Manway The manway cover was closed.7 of the 8 bolts had released; the 8th bolt was intact.
Stub sills and couplers The top shelf of the B end double-shelf coupler was broken. The B end stub sill was unremarkable.
The A end coupler had separated and the stub sill was deformed and bent to the right.

Figure A-15: Photographs showing the condition of tank car ACFX 79709

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Tank car TILX 316333

Table A-16
Consist position 18
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its right side in the forward part of the pile-up, oriented perpendicularly to the west leg of the wye.
Extent of fire damage The exterior finish of the car was extensively oxidized (fire damaged) above an inclined liquid-vapour line going from about 2/3 of the height on the A end to more than 3/4 of the height on B end.
Shell The shell contained an 8 to 9-foot long longitudinal thermal tear in the top-left portion of the first ring from the B end. There was a large dent on the top of this first ring, just above the thermal tear. The shell also contained a deep dent on the left side adjacent to the A end.
Heads The A end head has a shallow dent in its middle.
The B end head has a dent approximately mid-height on the left side, with a small (about 3-inch long) gouge and puncture at its deepest point.
Bottom outlet valve The fabricated skid exhibited slight impact damage and scoring on its right side. The BOV adaptor had sheared-off at the flange, exposing a closed BOV ball. The BOV handle had separated at its connection with the valve and was missing.
Top fittings The housing cover was slightly warped but closed and secured. The fittings inside were not visible for inspection.
Pressure relief device The PRD was inside the housing and not visible for inspection.
Manway Manway cover was closed but 4 of the 6 bolts had released.
Stub sills and couplers The A end stub sill was unremarkable.
The B end stub sill was impact damaged and bent to the left.

Figure A-16: Photographs showing the condition of tank car TILX 316333

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Tank car TILX 316549

Table A-17
Consist position 19
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest leaning on its left side and almost upside down, in the forward part of the pile-up, oriented perpendicularly to the west leg of the wye.
Extent of fire damage The exterior finish of the car was extensively oxidized (fire damaged) above a liquid-vapour line located at approximately 2/3 height.
Shell The shell contained several angled dents on both sides near the A end and B end. It was crushed inwards on the top-right in the middle and bulged out on the bottom.
Heads The A end head had several small dents and a larger, deep dent with an approximately rectangular puncture located in the lower-right quadrant.
The B end head contained several shallow dents in its top half.
Bottom outlet valve The BOV was intact with its handle closed and secured.
Top fittings The housing cover was slightly warped but closed and secured. The fittings inside were not visible for inspection.
Pressure relief device The PRD was inside the housing and not visible for inspection.
Manway The manway cover was open with all 6 bolts intact. The cover exhibited round patterns at the bolt locations with less fire damage than the surrounding surface. This suggests the bolts had been secured when the car was exposed to the post-derailment fire and that the cover was subsequently opened during recovery operations.
Stub sills and couplers The A end stub sill was slightly bent to the left and the knuckle was missing from the coupler.
The B end stub sill was extensively damaged and bent to the left. The coupler had been pulled out of the stub sill and was partially separated from it.

Figure A-17: Photographs showing the condition of tank car TILX 316549

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Tank car CTCX 735527

Table A-18
Consist position 20
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its right side underneath car WFIX 130603 (consist 22) in the forward part of the pile-up, oriented perpendicularly to the west leg of the wye.
Extent of fire damage The exterior finish of the car was extensively oxidized (fire damaged) with a red discolourationaround a large puncture in the shell. The liquid-vapour line was inclinedfrom about ¼ height on the B end to ½ height on the A end.
Shell The shell containedlarge dents on the BL side and on the bottom between the B end and the middle. There was a large puncture with edges curled inward in the top portionof the first ring from the B end. The shell was also buckled longitudinally at the top between the middle and A end.
Heads The A end headhas a deep dent covering most of its area, resulting in a concave instead ofconvex profile.
The B end headhas a shallow dent near the right edge.
Bottom outlet valve The cast skid was impact damaged on its right side. The BOV adaptor had sheared-off at the flange, exposing a closed and oxidized (fire damaged) BOV ball. The BO handle had separated at its intended break-off point and was missing.
Top fittings The housing was deformed and askew. It was closed but unsecured. The fittings inside were not visible for inspection.
Pressure relief device No visible impact damage to PRD.
Manway The manway cover was closed with all 6 bolts intact.
Stub sills and couplers The A end stub sill was impact damaged and bent to the left.
The B end stub sill was broken, bent to the left and the coupler assembly was missing.

Figure A-18: Photographs showing the condition of tank car CTCX 735527

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Tank car NATX 310477

Table A-19
Consist position 21
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upside down under car TILX 316556 (consist 23) on the south side of the main pile-up. The car was oriented approximately parallel to the west leg of the wye.
Extent of fire damage The exterior finish of the car was extensively oxidized (fire damaged) with a red discolouration and metal loss in some areas.
Shell The center portion of the shell was crushed. In the most deformed areas the radius of curvature was less than 1 foot. This deformation was consistent with general buckling due to impacts at both ends. In addition, the bottom of the car was crushed where car 23 came to rest on top of it. No shell ruptures were noted.
Heads The A end and B end heads contained multiple dents covering a large part of their surface. Impact marks and gouges were noted in several of these dents but no punctures.
Bottom outlet valve The fabricated skid and BOV assembly had no significant impact damage. The handle was in the closed position and secured. However, the handle extension and the support brackets were deformed due to impact damage.
Top fittings The housing had separated and the top fittings were sheared off.
Pressure relief device The PRD nozzle was sheared off just above the reinforcement pad on the shell.
Manway The manway cover and several of the bolts were missing.
Stub sills and couplers The A end stub sill was bent to the top-right and its left side was broken.
The B end stub sill was bent in the top-right direction.

Figure A-19: Photographs showing the condition of tank car NATX 310477

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Tank car WFIX 130603

Table A-20
Consist position 22
Orientation in the consist A end leading
Position and orientation of derailed car The car came to rest under cars ACFX 76605 (consist 24) and TILX 316556 (consist 23). Part of the B end of this car was visible between the 2 other cars, suggesting it was approximately upright.
Extent of fire damage The exterior finish of the car was extensively oxidized (fire damaged) with a red discolouration.
Shell The shell exhibited sideways crushing consistent with side impacts. It was bent in opposite directions at each end, resulting in an overall “s” shape. There was a large transverse rupture in the first ring near the B end, with a size commensurate with the car diameter.
Heads The A end head was slightly deformed.
The left side of the B end head was extensively crushed, consistent with the adjacent shell deformation and rupture.
Bottom outlet valve The fabricated skid and BOV assembly had no significant impact damage. The handle was in the closed position and secured. However, the extension and support brackets were deformed due to impact damage.
Top fittings The housing cover was deformed and hanging from the hinge but the wall was intact. The fittings inside the housing had no visible impact damage.
Pressure relief device The PRD inside the housing had no impact damage.
Manway The manway cover was closed with all 6 bolts intact.
Stub sills and couplers The A end stub sill was broken and bent to the right. Its coupler had been torn out.
The B end stub sill was bent to the right and the left side was broken.

Figure A-20: Photographs showing the condition of tank car WFIX 130603

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Tank car TILX 316556

Table A-21
Consist position 23
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest in the main pile-up on its right side, on top of cars CTCX 735527 (consist 20), NATX 310477 (consist 21 and WFIX 130603 (consist 22). It was angled about 45 degrees to the left relative to the direction of movement.
Extent of fire damage The exterior finish of the car was extensively oxidized (fire damaged) all over, with a red discolouration around the BOV and the top-left portion of the shell.
Shell The shell exhibited extensive sideways crushing consistent with side impacts. The top-right portion of the shell (1st ring from the B end) was deeply crushed and had a large puncture.
Heads The A end head was unremarkable.
The B end head has a deep dent near the top edge and the right side was crushed, consistent with the adjacent shell deformation.
Bottom outlet valve The fabricated skid was unremarkable. The cap and plug assembly sheared off the BOV adaptor, exposing an almost fully open and extensively oxidized (red discolouration) BOV ball. The handle assembly and securement mechanism were impact damaged and the handle was in the open position.
Top fittings The cover of the housing assembly was missing and the wall was extensively deformed, having started to separate from the flange. The interior of the housing was partly filled with debris, preventing inspection of 1 fitting (vacuum relief valve). The remaining top fittings did not exhibit any visible impact damage.
Pressure relief device The PRD inside the housing had no visible impact damage.
Manway The manway cover was closed with 2 bolts missing and 4 bolts intact.
Stub sills and couplers The A end stub sill was bent to the right. The knuckle was broken off the coupler.
The B end stub sill was unremarkable.

Figure A-21: Photographs showing the condition of tank car TILX 316556

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Tank car CTCX 735629

Table A-22
Consist position 24
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its right side between car TILX 316556 (consist 23) and ACFX 7660 (consist 25) in the main pile-up. It was angled about 45 degrees to the left relative to the direction of movement.
Extent of fire damage The exterior finish of the car was extensively oxidized (fire damaged) all over, with a red discolouration on the bottom-right near the A end. There was a steeply inclined liquid-vapour line going from about 3/4 of the height on the B end and disappearing between the middle and the A end, consistent with the inclined position of the car in the pile-up.
Shell The bottom of the shell exhibited shallow denting. It was crushed from both sides with a deeper dent and puncture on the bottom-right side near the A end.
Heads The A end head had a deep dent covering most of its area.
The B end head had a small dent on the right side.
Bottom outlet valve The cast skid had no significant impact damage. The BOV adaptor had sheared off at the flange, exposing a closed BOV ball. The handle was secured in the closed position.
Top fittings The housing was flattened and askew. Burnt product residue and product seepage from the damaged housing suggested that there was release from the top fittings inside.
Pressure relief device The top portion of the PRD was impact damaged and missing.
Manway The manway cover was closed. 5 out of 6 bolts were broken or released and there was burnt product residue between the cover and manway nozzle.
Stub sills and couplers Both the A end and B end stub sill were extensively deformed and bent upwards. Both couplers were missing. The B end stub sill was very fire damaged (red colour) likely due to the car coming to rest with this stub sill in close proximity to the puncture in the top of car CTCX 735527 (Figure A-18d).

Figure A-22: Photographs showing the condition of tank car CTCX 735629

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Tank car ACFX 76605

Table A-23
Consist position 25
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upside down in the forward portion of the pile-up and at an angle relative to the direction of movement.
Extent of fire damage The exterior finish of the car was extensively oxidized all over, with blistering, metal loss and red discolouration around punctures.
Shell The shell had extensive deformation and crushing from both sides. There was a puncture (with a size similar to a coupler) on the top-right in the first ring from the B end. A small rupture (less than a foot in length) was located at the top-right in the weld between the first and second rings from the B end. A large transverse rupture was located at the top, in the weld between the first and second rings from the A end. This large rupture was associated with an area of extensive deformation in the shell. There were also 2 smaller ruptures in the shell at the AL and AR ends of the A end bolster.
Heads The A end head was very deformed with a large puncture the left side at the junction with the shell.
The B end head was also very deformed and had large puncture on the left side.
Bottom outlet valve The BOV had no impact damage and the handle was in the closed position and secured.
Top fittings The housing had separated and the top fittings were sheared off.
Pressure relief device The B end PRD had no visible impact damage. The nozzle of the A end PRD was sheared off just above the reinforcement pad on the shell.
Manway The manway cover was closed with 1 of the 8 bolts released.
Stub sills and couplers The A end stub sill had separated from the front sill pad at the fillet weld and the coupler was missing. None of the weld failures had propagated to the tank.
The B end stub sill was extensively damaged and twisted to the left and upwards. The coupler was missing.

Figure A-23: Photographs showing the condition of tank car ACFX 76605

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Tank car PROX 44293

Table A-24
Consist position 26
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upside down in the forward portion of the pile-up and at an angle relative to the direction of movement.
Extent of fire damage The exterior finish of the car was extensively oxidized with rusty areas above an inclined liquid/vapour line going from about 3/4 of the height on the A end to 1/4 of the height on the B end. Thermal tear is about at liquid/vapour line.
Shell The shell contained a large longitudinal thermal tear on the right side in the second and third rings from the B end. The thermal tear was about 8 feet long. The shell was visibly bulged in the vicinity of the thermal tear.
Heads The B end head had a dent at its right-top edge.
The A end head was dented at the bottom-left.
Bottom outlet valve The cast skid had no significant impact damage. The BOV adaptor had sheared off at the flange, exposing a closed BOV ball. The handle had separated at the edge of the skid with the remaining portion secured in the closed position with the locking pin in place.
Top fittings The housing was deformed at the hinge and unsecured, partially exposing the fittings inside. One of the fittings was impact damaged (bent at its flange).
Pressure relief device There was no visible impact damage to the PRD.
Manway The manway cover was closed with no impact damage.
Stub sills and couplers The B end stub sill was broken and the coupler was missing. The front sill pad had separated from the tank at the fillet weld. None of the weld failures had propagated to the tank.
The A end stub sill had no significant impact damage.

Figure A-24: Photographs showing the condition of tank car PROX 44293

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Tank car NATX 310581

Table A-25
Consist position 27
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest upside down in the forward portion of the pile-up and at an angle relative to the direction of movement.
Extent of fire damage The exterior finish of the car was extensively oxidized throughout with red discolouration around the punctures in the A end head.
Shell The upper-left portion shell contained a large deep buckling deformation between the B end and the middle, consistent with axial compressive impact loading.
Heads The B end head contained multiple deep dents and 2 punctures (one in the center and one in the bottom-right).
The A end head was unremarkable.
Bottom outlet valve The fabricated skid and BOV assembly had no significant impact damage. The handle was in the closed position and secured. However, the extension and support brackets were deformed due to impact damage.
Top fittings The housing had separated at the hinge and was missing. The exposed top fittings had no visible impact damage.
Pressure relief device The PRD was plugged with debris but had no visible impact damage.
Manway The manway cover was closed. 1 of the 8 bolts and its lug were broken off.
Stub sills and couplers The B end stub sill was broken bent up and to the left. The B end coupler was impact damaged (the knuckle and bottom shelf were broken off).
The A end stub sill was bent to the right and its coupler was missing.

Figure A-25: Photographs showing the condition of tank car NATX 310581

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Tank car PROX 44202

Table A-26
Consist position 28
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its right side in the forward portion of the pile-up and at an angle relative to the direction of movement.
Extent of fire damage The exterior finish of the car was extensively oxidized throughout with red discolouration around the large puncture, the bottom and the A end.
Shell The shell was dented on both sides. The first ring from the A end contained a deep dent with a large puncture on its left-bottom side.
Heads The B end head had 2 deep dents covering most of the right side and the bottom-right quadrant, and a small puncture at the bottom-right edge.
The A end head had a large dent covering most of its area.
Bottom outlet valve The cast skid was impact damaged on its right side. The BOV adaptor had sheared off at the flange, exposing a closed BOV ball. The handle had separated at the locking pin remaining in the closed position.
Top fittings The housing was slightly askew but otherwise undamaged. The fittings inside were not visible for inspection.
Pressure relief device The PRD was plugged with debris but had no visible impact damage.
Manway The manway cover was closed with no impact damage.
Stub sills and couplers The A end stub sill was bent to the right.
The B end stub sill was bent to the left and the coupler was missing.

Figure A-26: Photographs showing the condition of tank car PROX 44202

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Tank car TILX 316234

Table A-27
Consist position 29
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upside down in the main pile-up perpendicular to the direction of movement.
Extent of fire damage The exterior finish of the car was extensively oxidized with the bottom surface with extensive fire damage (blistering, red discolouration).
Shell The middle portion of the shell was deeply bent and crushed on the right side. The shell was extensively deformed all around the housing and manway reinforcement pad. However, this reinforcement pad was not visibly deformed.
Heads The A end head had a deep dent in the top-left quadrant with a tear at the edge of the head (most deformed area) and a smaller dent in the bottom-left quadrant.
The B end head had a large shallow dent with an impact mark in the bottom, located in the top-left quadrant.
Bottom outlet valve The fabricated skid and BOV assembly had no significant impact damage. The handle was in the closed position and secured. However, the handle extension and the support brackets were slightly bent as a result of tank deformation in this area.
Top fittings The housing cover was missing and the wall is deformed as a result of impact damage. The housing was partially filled with debris. The 3-inch valve handle was not in the horizontal position, suggesting it might have been displaced. However, there was no visible damage to the caps assemblies.
Pressure relief device The PRD had no visible impact damage.
Manway The manway cover was closed with 1 of the 6 bolts bent.
Stub sills and couplers The A end stub sill was bent to the right and its coupler was impact damaged (missing knuckle and broken yoke).
The B end stub sill was twisted to the left and broken. The knuckle was missing.

Figure A-27: Photographs showing the condition of tank car TILX 316234

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Tank car TILX 316584

Table A-28
Consist position 30
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upside down in the main pile-up perpendicular to the direction of movement.
Extent of fire damage The exterior finish of the car was extensively oxidized above an inclined liquid/vapour line going from about 1/4 of the height on the B end to 1/2 of the height on the A end.
Shell The shell had several transverse buckles on the top and a deeper dent near the B end. It was dented along most of its left side with a puncture with jagged, curled-out edges in the area of the weld between the first and the second rings from the A end. In-situ photographs of this car indicate that the location of this puncture was consistent with an impact from the BL bolster of car TILX 316234 (consist 29).
Heads The A end head was unremarkable.
The B end head had a shallow dent extending over most of its surface.
Bottom outlet valve There was an impact mark on the A end portion of the fabricated skid. The BOV adaptor had sheared off at the flange, exposing a closed BOV ball. The handle assembly was missing and the securement mechanism was impact damaged.
Top fittings The housing assembly had no impact damage. The fittings inside were not visible for inspection.
Pressure relief device The PRD inside the housing was not visible for inspection.
Manway The manway cover was closed with 1 of the 6 bolts broken.
Stub sills and couplers The A end stub sill was broken and twisted upwards, nearly touching the head. The knuckle was missing.
The B end stub sill was bent to the right. The coupler was impact damaged and a piece of knuckle was missing.

Figure A-28: Photographs showing the condition of tank car TILX 316584

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Tank car WFIX 130571

Table A-29
Consist position 31
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest on its left side in the main pile-up perpendicular to the direction of movement.
Extent of fire damage The exterior finish of the car was oxidized with a red discolouration at the B end. The left side was extensively fire-damaged with blistering and a burn-through near the A end.
Shell The left side of the shell contained several large dents. The top was crushed inwards along most of the car’s length. In the portion between the top fittings and B end, there was an about 10-foot long gouge ending in a 2-foot long puncture.
Heads The A end head had two dents located at the edge in the middle-left and upper-left positions.
B end head has a larger but relatively shallow dent in its bottom-left quadrant.
Bottom outlet valve The fabricated skid and BOV assembly had no impact damage.
Top fittings The housing had separated at the flange and was observed resting near the B end. All of the bolts securing the housing to the flange were sheared and there was an impac mark on the wall of the separated housing. Three of the bolts clamping the flange to the top fitting nozzle were also sheared off. The location of these damaged bolts was in line with the gouge and puncture on the top of the tank, suggesting the damage was caused by the same impact. All of the fittings inside had sheared off.
Pressure relief device The top portion of the PRD was sheared off.
Manway The car had come to rest with its manway cover closed. 2 of the 6 bolts were broken. The manway cover was subsequently opened during recovery operations.
Stub sills and couplers The A end stub sill had no impact damage.
The B end stub sill was bent to the left. The coupler was impact damaged and the bottom shelf was missing.

Figure A-29: Photographs showing the condition of tank car WFIX 130571

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Tank car TILX 316330

Table A-30
Consist position 32
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upright in the main pile-up perpendicular to the direction of movement.
Extent of fire damage The exterior finish of the car was oxidized with a red discolouration at the A end.
Shell The shell contained a deep dent on its left side with a puncture and a large transverse rupture. Part of this rupture was associated with the between the 1st and 2nd rings from the A end.
The right side of the shell was also dented along most of the car’s length. Dents were also noted on the top between the manway and B end.
Heads The A end head had a shallow dent covering the bottom-right quadrant with a smaller dent above it.
The B end head was slightly dented on the left side.
Bottom outlet valve The fabricated skid was impact damaged and deformed on its right side. The BOV adaptor had sheared off at the flange, exposing a closed BOV ball. The handle assembly and securement mechanism were missing.
Top fittings The housing had separated at the flange. All of the fittings inside were impact damaged or sheared off. The area around the damaged fittings was partially covered with product residue.
Pressure relief device The top portion of the PRD was sheared off.
Manway The manway cover wa closed with 1 of the 6 bolts broken.
Stub sills and couplers The A end stub sill was broken and bent to the right. Its knuckle was missing.
The B end stub sill had no visible damage but its knuckle was impact damaged.

Figure A-30: Photographs showing the condition of tank car TILX 316330

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Tank car NATX 310412

Table A-31
Consist position 33
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest on its left side in the main pile-up perpendicular to the direction of movement.
Extent of fire damage The exterior finish of the car was extensively oxidized with blistering, metal loss and red discolouration. The B end head and stub sill were extremely fire damaged.
Shell The top half of the shell contained several longitudinal buckles. It was also deformed with a deep transverse buckle along the bottom, on the A end side of the skid.
Heads The A end head contained a shallow dent and puncture in the bottom-left quadrant
The B end head contained a dent covering most of the left-bottom quadrant and was crushed on its top-right edge.
Bottom outlet valve The fabricated skid was impact damaged on its left side. The BOV adaptor had sheared off at the flange, exposing a closed BOV ball. The handle assembly and securement mechanism were missing.
Top fittings The housing was impact damaged and broken. The 3-inch valve was sheared off and the 2-inchvalve was impact damaged.
Pressure relief device The PRD was deformed due to impact damage. It was also fire-damaged.
Manway The manway cover was closed. The cover and bolts were extensively fire-damaged.
Stub sills and couplers The A end stub sill was bent to the left.
The B end stub sill was bent to the right and its knuckle was missing. The BL bolster had separated and was missing.

Figure A-31: Photographs showing the condition of tank car NATX 310412

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Tank car TILX 316317

Table A-32
Consist position 34
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest on its right side in the main pile-up perpendicular to the direction of movement.
Extent of fire damage The exterior finish of the car was extensively oxidized with blistering and metal loss. The areas around the puncture in the B end and on the top between the top fittings and the B end had a red colour, with a small burn-through.
Shell The shell was crushed on the top-right near the B end. The left side was dented inwards along the entire length.
Heads The A end head had a large dent covering the bottom-right quadrant and extending into the upper-right quadrant. The shell was ruptured at its bottom-right edge and had a small puncture at the bottom of a gouge almost at mid-height near the right edge.
The top portion of the B end head was dented and crushed, with a puncture approximately in the middle.
Bottom outlet valve The fabricated skid was impact damaged on its right side. The BOV adaptor had sheared off at the flange, exposing a partially open BOV ball (opened approximately 1/16 to 1/8 inch). The handle assembly and securement mechanism were missing.
Top fittings The housing cover was deformed and askew. The wall of the assembly was deformed due to impact damage on the right side. The fittings inside were not visible for inspection.
Pressure relief device The PRD was inside the housing and not visible for inspection.
Manway The manway cover was closed with no visible impact damage.
Stub sills and couplers The A end stub sill was broken and bent upwards and to the right.
The BR bolster and right side of the B end stub sill were impact damaged. The coupler was missing.

Figure A-32: Photographs showing the condition of tank car TILX 316317

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Tank car WFIX 130545

Table A-33
Consist position 35
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upright in the main pile-up perpendicular to the direction of movement.
Extent of fire damage The exterior finish of the car was extensively oxidized with blistering and metal loss. The top was extensively burned with a burn-through on the upper left near the A end.
Shell The shell exhibited extensive crushing and reduction of volume in the center portion. A small puncture located near the burn-through on the left side near the A end was associated with bright (non-oxidized) gouges, indicating it likely occurred during recovery.
Heads The A end head had deep dents on the top and left edges but no puncture.
The B end head had no impact damage.
Bottom outlet valve The fabricated skid was impact damaged with a torn inside corner and bent side plate on the left side. The valve body also had an impact mark on its left side. The BOV adaptor had sheared off at the flange, exposing a partially (about 2/3) open and extensively oxidized BOV ball. The handle assembly and securement mechanism were missing.
Top fittings The housing cover was closed but extensively fire-damaged. The portion adjacent to the locking mechanism and the locking pin were burned away. The fittings inside were not visible for inspection.
Pressure relief device The PRD was inside the housing and not visible for inspection.
Manway The manway cover was closed. The cover and bolts were extensively fire-damaged.
Stub sills and couplers The A end stub sill and coupler were impact damaged. The bottom shelf was broken.
The B end stub sill was bent downwards and twisted to the right. The knuckle was missing and the bottom shelf was broken.

Figure A-33: Photographs showing the condition of tank car WFIX 130545

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Tank car ACFX 79698

Table A-34
Consist position 36
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest on its right side, crushed under car NATX 302784 (consist 37), in the main pile-up perpendicular to the direction of movement.
Extent of fire damage The exterior finish of the car was extensively oxidized with blistering, metal loss and red discolouration.
Shell The right side of the shell was crushed by car WFIX 130545 (consist 35) and the left side by car NATX 302784 (consist 37). This resulted in extensive deformation with reduction of volume along most of the length of car. At the crease between the two crushed areas at the top of the tank, the local radius was only a few inches and the shell material had begun to separate from the top fitting reinforcement pads.
Heads The A end head contained 4 dents. The largest of these dents was approximately in the middle and contained a large rupture extending from the top to the bottom. There was a smaller puncture at the bottom-right where the damaged stub sill had been forced back against the head.
The B end contained a large dent over most of its left side. This dent was further deformed by crushing in a direction consistent with car NATX 302784 (consist 37) coming to rest on top of this car. The combined deformation resulted in a large rupture approximately in the middle of the head.
Bottom outlet valve This car did not have a skid; impact protection was provided by the BOV saddle which exhibited small impact marks around its periphery. The base, handle and cap assembly had sheared off at the saddle as designed, exposing a closed plug.
Top fittings The housing cover had separated at the hinge and was missing. The liquid valve bolts were broken and the valve was pulled out several inches.
Pressure relief device Both PRDs were impact damaged and dented and exhibited extensive fire damage.
Manway The manway cover was in the closed position but 3 of the 8 bolts had sheared off and 1 bolt was bent. There was a visible gap between the manway nozzle and cover.
Stub sills and couplers The A end stub sill was broken and bent up and to the right.
The B end stub sill was broken and the knuckle was missing.

Figure A-34: Photographs showing the condition of tank car ACFX 79698

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Tank car NATX 302784

Table A-35
Consist position 37
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest on its right side in the main pile-up, on top of car 36 (ACFX 79698) and perpendicular to the direction of movement.
Extent of fire damage The exterior finish of the car was extensively oxidized with red discolouration. There was a burn-through in the shell on the left side between the middle and B end. The edges of this burn-through were curled in the outward direction suggesting internal pressure was present when the perforation occurred.
Shell The bottom of the shell was dented along the car length and contained a deeper transverse dent between the middle and A end. Multiple dents were observed on the top of the tank.
Heads The A end head contained a shallow dent in the bottom-right quadrant and an impact mark with a deep gouge at the top-left edge.
The B end head had no visible impact damage.
Bottom outlet valve The fabricated skid and BOV assembly had no significant impact damage. The handle was in the closed position and secured. However, the handle extension and the support brackets were deformed due to impact damage. Product residue was observed on the BOV assembly.
Top fittings The housing cover had separated at the hinge and was missing. The fittings were sheared off. The area surrounding the top fittings was extensively oxidized with a red discolouration.
Pressure relief device The top portion of the PRD was sheared off and the PRD was filled with product residue.
Manway The manway cover was in the closed position but 2 of the 6 bolts had released.
Stub sills and couplers The A end stub sill was slightly bent to the right and the knuckle was missing.
The B end stub sill had no significant impact damage.

Figure A-35: Photographs showing the condition of tank car NATX 302784

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Tank car NATX 302784

Table A-36
Consist position 38
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its left side in the main pile-up perpendicular to the direction of movement.
Extent of fire damage The top portion of the tank was extremely fire damaged with burn-throughs along the bent edge of the shell. The top fittings were partly consumed (metal loss). The bottom of the tank was less fire damaged (lightly oxidized).
Shell The left side of the shell was crushed up against cars ACFX 71121 (consist 39) and NATX 302784 (consist 37). This resulted in extensive deformation with reduction of volume along most of the length of the car. In the most deformed areas at the top of the tank, the local radius was only a few inches. This whole area was also extensively burned and exhibited cracks with bright, non-oxidized fracture surfaces. It is considered most probable that the shell was weakened by fire damage and cracked during Tank car recovery and staging. The shell also contained an approximately 1-foot long rupture associated with the weld between the 1st and 2nd rings from the B end. This rupture had oxidized fracture surfaces indicating it occurred during the derailment.
Heads The A end head had a shallow dent in the bottom-left quadrant.
The left side of the B end head contained several dents and impact marks with a small puncture approximately in the middle.
Bottom outlet valve This car did no have a skid; impact protection was provided by the BOV saddle. The BOV assembly had no impact damage. The handle was displaced towards the open position. The locking pin was hanging from its chain.
Top fittings The housing cover had separated at the hinge and was missing. The fittings were sheared off. The top fitting nozzle was partly consumed by the fire.
Pressure relief device The top portion of the A end PRD was impact damaged. The B end PRD had some impact damage. Both PRDs had sustained extensive fire damage.
Manway The manway cover was in the closed position and partly consumed by the fire.
Stub sills and couplers The A end stub sill was impact damaged and bent to the right. The knuckle was missing.
The B end stub sill had no significant damage but the knuckle and bottom shelf were broken off.

Figure A-36: Photographs showing the condition of tank car ACFX 71505

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Tank car ACFX 71121

Table A-37
Consist position 39
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its right side under cars ACFX 71505, WFIX 130616 and WFIX 130585 (consist no. 38, 43 and 55 respectively), in the main pile-up perpendicular to the direction of movement.
Extent of fire damage The tank was extremely fire damaged with several areas of burn-through near the BOV.
Shell The top of the shell contained a deep dent with a puncture at the junction with the A end head. It also was deformed with 2 deep folds at the junction with the B end head.
The tank was flattened and dented along the bottom and right side. There were several burn-throughs on the bottom, one of which was associated with a puncture.
Heads The edges of both heads were deformed adjacent to dents in the shell.
Bottom outlet valve This car did not have a skid; impact protection was provided by the BOV saddle. The base, handle and cap assembly had sheared off at the saddle as designed, exposing a closed plug and a portion of the cam mechanism.
Top fittings The housing was crushed and askew, exposing an impact damaged (bent) liquid valve.
Pressure relief device The two PRDs had no visible impact damage.
Manway The manway cover was in closed with 2 of the 8 bolts released.
Stub sills and couplers The A end stub sill separated at the inboard draft gear lug location. The coupler was missing.
The B end stub sill is impact damaged and the knuckle was missing.

Figure A-37: Photographs showing the condition of tank car ACFX 71121

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Tank car CTCX 735537

Table A-38
Consist position 40
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest close to upright, squeezed between cars ACFX 71505 and NATX 303128 (consist no. 38 and 41), in the main pile-up and perpendicular to the direction of movement. The B end of the car was also crushed underneath car WFIX 130585 (consist 55).
Extent of fire damage The tank was extensively fire-damaged, with several burn-throughs associated with the more deformed areas along the top-right. The bottom was less fire-damaged.
Shell The top of the shell contained a large crushed area between the B end and the top fittings, with extremely deformed (bent) material and a rupture between the manway and PRD. A long dent on the top-right near the A end had a torn and jagged edge, likely due to fire damage. There was another large dent on the left side near the B end. The bottom of the shell had several smaller dents.
Heads The A end head had a deep dent in the bottom-right quadrant and a shallower dent on the bottom-left.
The top-right edge of the B end head was severely crushed and contained a large rectangular impact mark.
Bottom outlet valve The cast skid was impact damaged on its right side. The BOV adaptor had sheared off at the flange, exposing a closed BOV ball. The handle was in the closed position. The securement mechanism was impact damaged.
Top fittings The housing was missing and the top fittings were sheared off.
Pressure relief device The PRD was extensively fire damaged.
Manway The manway cover was closed. All of the bolts were damaged and/or covered with debris.
Stub sills and couplers Both stub sills were broken with the remaining portion bent upwards.
Both couplers were missing.

Figure A-38: Photographs showing the condition of tank car CTCX 735537

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Tank car CTCX 735537

Table A-39
Consist position 41
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its right side, crushed between cars CTCX 735537 and CTCX 735572 (consist no. 40 and 42) and underneath car WFIX 130585 (consist 55), in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The tank was extensively oxidized with blistering and red discolouration above an inclined liquid/vapour line going about 1/3 of the height on the A end to 0 near the middle.
Shell The shell was crushed all along the top-right, with a deep dent and a rectangular puncture near the A end. The shell contained 2 ruptures (one partly along the weld) at the top of the head-to-shell junction on the B end. These ruptures were located at the edge of a deep dent in the head. There was a deep dent with a buckled edge on the bottom-left near the B end.
Heads The A end head was crushed on the top and contained a dent in the bottom-left quadrant.
The B end head had a large dent covering most of its right side, with rupture at the head-to-shell weld at the top-right (see shell)
Bottom outlet valve The fabricated skid was impact damaged on both sides. The BOV assembly was intact but the handle extension and securement mechanism were missing.
Top fittings The housing was missing and the 2 valves were impact damaged (one was bent and the other sheared off).
Pressure relief device The PRD had minor impact damage to one bolt on the top portion.
Manway The manway cover was closed with 2 of the 6 bolts broken.
Stub sills and couplers Both stub sills were impact damaged and twisted to the right. The B end coupler was still connected to the separated B end coupler from car CTCX 735537 (consist 40). The A end coupler was missing.

Figure A-39: Photographs showing the condition of tank car NATX 303128

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Tank car CTCX 735537

Table A-40
Consist position 42
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest upright, pressed against cars NATX 303128 (consist no. 41) and underneath car WFIX 130585 (consist 55), in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The tank was extensively oxidized with flaking (metal loss) and red discolouration.
Shell The shell was flattened along both sides resulting in a sharp crease near the bottom. There was puncture on the bottom-left near the B end. The top was crushed between the top fittings and the A end.
Heads The A end had a deep dent on its right side, with a puncture at the bottom-right edge. There was a shallow dent close to the middle.
The B end had a puncture at the bottom-left edge and 2 deep parallel dents in its right half.
Bottom outlet valve The cast skid was impact damaged on its left side. The BOV adaptor had sheared off at the flange, exposing a closed and oxidized BOV ball. The handle was closed and secured.
Top fittings The housing was open and deformed. In-situ photos show that it was open and had some damage when the car came to rest. It was further deformed during staging. There was no visible impact damage to the top fittings.
Pressure relief device The PRD had no visible impact damage.
Manway The manway cover was closed with no impact damage.
Stub sills and couplers The A end stub sill was impact damaged and the separated A end coupler from car WFIX 130616 was still attached to its coupler.
The B end stub sill was broken and bent to the left. Its coupler was missing.

Figure A-40: Photographs showing the condition of tank car CTCX 735572

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Tank car WFIX 130616

Table A-41
Consist position 43
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upside down, on top of cars ACFX 71121 and CTCX 735537 (consist 39 and 40) in the main pile-up and angled with respect to the direction of movement.
Extent of fire damage The tank was extensively oxidized with flaking (metal loss) and red discolouration.
Shell The portion of the shell between the middle of the tank and the B end was crushed inward from the top and bottom directions. This resulted in extreme deformation near the B end where both sides were less than a foot apart, causing the shell and B end head to separate almost completely. Part of the rupture was associated with the head-to-shell weld. The left side of the shell had a puncture in a sharp dent near the middle of the tank.
Heads The A end head was dented in the top-left quadrant and had a smaller dent on the bottom-left quadrant.
The B end head was extremely deformed and almost completely separated from the shell (see above).
Bottom outlet valve The fabricated skid and BOV assembly were unremarkable. The handle was secured in the closed position.
Top fittings The housing cover had separated and there was an impact mark on the wall of the housing. The housing was partially filled with debris. The top fittings inside had no visible impact damage.
Pressure relief device The PRD had no visible impact damage.
Manway The manway cover was closed with 1 of the 6 bolts broken, 2 bolts released and impact damage to the hinge.
Stub sills and couplers The A end stub sill had no significant impact damage but its coupler was broken.
The B end stub sill was bent to the left. Its coupler was broken.

Figure A-41: Photographs showing the condition of tank car WFIX 130616

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Tank car WFIX 130664

Table A-42
Consist position 44
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest in the upright position under car WFIX 130585 (consist 55) in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The tank was blackened and oxidized with red discolouration near the A end.
Shell The left side of the shell was crushed and its top was flattened between the middle and A end. The left side also had a deeper transverse dent near the middle. Two ruptures were observed adjacent to the deep dent in the A end head: one rupture was associated with the body bolster pad fillet weld and the other with the head-to-shell weld.
Heads The A end head contained a deep dent covering most of its left side.
The B end head had multiple dents. A deeper dent near the top contained a gouge and small puncture.
Bottom outlet valve The left and A end sides of the fabricated skid were impact damaged. The BOV adaptor had sheared off at the flange, exposing the BOV ball. The ball appeared to be closed although this could not be confirmed as it was partially obscured by dirt. The handle assembly and securement mechanism were deformed as a result of impact but the handle was still secured.
Top fittings The housing assembly was extensively impact damaged – the cover and wall were deformed and the wall was partially separated from the nozzle. Some of the fittings were hidden from view – the others had no visible damage.
Pressure relief device The PRD inside the housing was not visible for inspection.
Manway The manway cover was closed when the car came to rest. It was opened during recovery operations. One manway cover bolt was missing and 1 bolt was bent.
Stub sills and couplers The A end stub sill was broken, bent to the left and its coupler knuckle was missing. This stub sill had separated at the fillet weld between the front sill pad and the head. This crack had propagated to the body bolster pad fillet weld and into the head-to-shell weld.
The B end stub sill was partially obscured by dirt. The portions visible were unremarkable.

Figure A-42: Photographs showing the condition of tank car WFIX 130664

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Tank car WFIX 130630

Table A-43
Consist position

45
Orientation in th consist

B end leading
Position and orientation of derailed car

This car came to rest in the upright position between cars WFIX 130664 and TILX 316523 (consist 44 and 46) in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage

The tank was oxidized all over with extensive fire damage (red discolouration) around the B end.
Shell

The right side of the shell between the middle and the B end was extensively dented with two small punctures. The bottom of the shell between the BOV and the A end was crushed with a large transverse buckle.
Heads

The A end head had no significant impact damage.
The B end head contained a deep puncture just above the stub sill and a large dent with a rupture at the junction with the shell on the right side.
Bottom outlet valve

The fabricated skid was extensively impact damaged. The tapered plate had separated at both welds on the side pointing to the B end. The BOV adaptor had sheared off at the flange, exposing a partially open (about ½) BOV ball. The handle assembly and securement mechanism were missing.
Top fittings

The housing cover was slightly askew but still secured. The fittings inside were not visible for inspection.
Pressure relief device

The PRD inside the housing was not visible for inspection.
Manway

The manway cover was closed with no visible impact damage.
Stub sills and couplers

The A end stub sill was partially obscured by dirt. The portions visible were unremarkable.
The B end stub sill was broken and bent to the right.

Figure A-43: Photographs showing the condition of tank car WFIX 130630

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Tank car TILX 316523

Table A-44
Consist position 46
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest nearly upright position between cars WFIX 130630 and TILX 316613 (consist 45 and 47) in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The tank was oxidized all over with extensive fire damage (red discolouration).
Shell The bottom half of the shell was crushed on both sides near the middle. The shell was flattened all along its top-left side with a large puncture with outward curled edges on the top between the A end and top fittings.
Heads The A end head contained a small puncture at the bottom of a deep dent on its left edge.
The B end head contained 2 dents in the top-left quadrant - one had an impact mark and small puncture in it.
Bottom outlet valve The left side of the fabricated skid was impact damaged. The BOV adaptor had sheared off at the flange, exposing a BOV ball that was visibly leaking product. The handle assembly and securement mechanism were missing.
Top fittings The housing cover and wall were deformed due to impact. The fittings were partially visible – no impact damage was noted.
Pressure relief device The PRD inside the housing had no visible damage.
Manway The manway cover was closed with no visible impact damage.
Stub sills and couplers The A end stub sill was broken and bent to the right. The coupler was broken.
The B end stub sill was not deformed but the fillet weld between the front sill pad and the head had separated. The coupler knuckle was missing.

Figure A-44: Photographs showing the condition of tank car TILX 316523

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Tank car TILX 316613

Table A-45
Consist position 47
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest on its left side squeezed between cars TILX 316523 and TILX 316616 (consist 46 & 48) in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The tank was oxidized all over with extensive fire damage (red discolouration) primarily on the A end.
Shell The shell was crushed inward from the top and bottom directions. This resulted in extreme deformation near the middle with opposite sides coming close together. The shell bottom contained a large puncture with inward-curled edges near the B end and the top had a smaller puncture adjacent to the manway.
Heads The upper half of the A end head had shallow denting.
The bottom-right and top-left sides of the B end head were crushed (consistent with the shell crushing).
Bottom outlet valve The fabricated skid had no impact damage. The BOV adaptor had sheared off at the flange, exposing an oxidized BOV ball. A small gap was visible between the ball and valve housing but there was no sign of product leakage. The handle extension and securement mechanism were deformed due impact damage.
Top fittings The housing assembly and its cover were present but only partially visible due to the orientation of the car after it was staged. The fittings inside were not visible for inspection.
Pressure relief device The PRD inside the housing was not visible for inspection.
Manway The manway was not visible for inspection due to the orientation of the car after it was staged.
Stub sills and couplers The A end stub sill front sill pad had separated from the head at the fillet weld. The crack extended back to the body bolster pad weld.
The B end stub sill was broken and its coupler was missing.

Figure A-45: Photographs showing the condition of tank car TILX 316613

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Tank car TILX 316616

Table A-46
Consist position 48
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest on its right side underneath car TILX 316206 (consist 49) in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The tank was oxidized all over with more intense fire damage (red discolouration, metal loss, rusty areas, and burn-throughs) on the top portion.
Shell The shell was crushed inward from both sides, with a more extensive deformation on the right side between the B end and the middle, resulting in a sharp crease near the top fittings. It contained a long rupture on a slant plane in the crushed area on the right side. The region with extreme deformation near the top fittings had extensive fire damage and several transverse cracks.
Heads The bottom-right quadrant of the A end head was extensively dented. The top portion has several shallow dents.
The B end head was flattened from both sides consistent with the crushing deformation of the shell and had a very deep dent with extensive deformation on the bottom left side.
Bottom outlet valve The fabricated skid was impact damaged on both sides. The BOV adaptor had sheared off at the flange, exposing a closed and oxidized BOV ball. The handle extension and securement mechanism were missing.
Top fittings The housing assembly and its cover were present but only partially visible due to the orientation of the car after it was staged. The fittings inside were not visible for inspection. "The housing cover was partially torn off. The wall was deformed inward due to impact damage and was partially separated from the nozzle as several bolts had sheared off. The top fittings inside were extensively fire-damaged, with red discolouration and metal loss.
Pressure relief device The PRD inside the housing was extensively fire-damaged.
Manway The manway was closed and extensively fire-damaged.
Stub sills and couplers The A end stub sill was slightly bent to the left.
The B end stub sill was broken and twisted to the right.

Figure A-46: Photographs showing the condition of tank car TILX 316616

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Tank car TILX 316206

Table A-47
Consist position 49
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its left side on top of car TILX 316616 (consist 48) in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The tank was extensively fire-damaged all over (red discolouration, blistering and metal loss). The shell had a large burn-through on the bottom near the B end.
Shell The shell was compressed inward from both sides. It was extensively buckled in the transverse direction at both ends (towards the right at the B end and the left at the A end), resulting in an overall “s” shape. There was a large transverse rupture in the buckled area near the weld between the shell and B end head.
Heads The left side of the A end head had shallow denting.
The B end head had a very large dent on the right side and was flattened from both sides consistent with the shell deformation.
Bottom outlet valve The fabricated skid was slightly impact damaged on the left side. The BOV adaptor had sheared off at the flange, exposing a closed and oxidized BOV ball. Rusty deposits around the ball and inside the skid suggest there was product seepage from the BOV. The handle extension was deformed and separated from the valve assembly.
Top fittings The housing cover was closed and slightly deformed. The top fittings inside were not visible for inspection.
Pressure relief device The PRD inside the housing was not visible for inspection.
Manway The manway is not visible on any photograph.
Stub sills and couplers The A end stub sill was broken and twisted to the left.
The B end stub sill was broken, bent to the right. Both couplers were broken.

Figure A-47: Photographs showing the condition of tank car TILX 316206

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Tank car TILX 316319

Table A-48
Consist position 50
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upright, compressed between cars TILX 316206 and CTCX 735617 (consist 49 and 51) in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The tank was extensively fire-damaged with flaking and red discolouration on the left side with a large burn-through near the B end
Shell The shell was extremely crushed from both sides – the diameter in the middle was nearly reduced to the width of the BOV skid (Figure A-48d). The buckled regions on the top between the manway and the B end contained long transverse ruptures with torn edges. The reinforcing bars on the tank bottom were broken at the buckle between the BOV and B end. A small rupture had extended into the shell from a fracture in the right reinforcing bar.
Heads The right edge of the A end head was dented.
The B end head had no significant impact damage.
Bottom outlet valve The fabricated skid and BOV assembly were unremarkable. The handle extension was separated from the BOV inside the skid. The handled extension and securement mechanism were extensively deformed due to impact damage.
Top fittings The housing cover was slightly deformed and askew but still secured. The top fittings insid were not visible for inspection.
Pressure relief device The PRD inside the housing was not visible for inspection.
Manway The manway cover was closed with 2 of the 6 bolts broken above the nut and 1 bolt bent and knocked out of its lug.
Stub sills and couplers The A end stub sill was bent to the left. The coupler was partially obscured by dirt - the knuckle was missing.
The B end stub sill was broken and had separated at the head brace to front sill pad fillet weld, exposing the draft gear inboard lugs. The coupler was missing.

Figure A-48: Photographs showing the condition of tank car TILX 316319

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Tank car CTCX 735617

Table A-49
Consist position 51
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest upright, its A end compressed between cars TILX 316206 and CTCX 735526 (consist 49 and 53) and its B end compressed between cars TILX 316319 and TILX 316572 (consist 50 and 52) in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The tank was extensively fire-damaged with flaking and red discolouration.
Shell The shell exhibited crushing and twisting deformation with extreme loss of volume in the middle portion. The welds joining the skid to the shell had separated, with tears extending into the shell on both sides. There was a large transverse rupture associated with a weld in the extremely deformed area on the bottom, between the BOV and B end. There was a small puncture on the bottom-right of the second ring from the A end.
Heads The right edge of the A end head had a shallow dent.
The B end head was very deformed (crushed from both sides) and contained a large deep dent in the upper-right quadrant, extending into the shell. It also had a smaller dent on the bottom-right.
Bottom outlet valve The cast skid was extensively impact damaged and had partially separated from the shell. The BOV adaptor had sheared off at the flange, exposing the BOV ball. Most of the visible ball surface was oxidized but there was a bright, non-oxidized crescent at the A end side suggesting the ball was displaced after the occurrence. The handle was deformed and not secured. The securement mechanism was impact damaged.
Top fittings The housing was crushed and askew. The top fittings inside were not visible for inspection.
Pressure relief device The top portion of the PRD exhibited minor impact damage (broken bolt).
Manway The manway cover was closed with 1 of the 6 bolts broken above the nut.
Stub sills and couplers The A end stub sill was broken and the coupler was missing.
The B end stub sill was broken. It had separated at the fillet weld between the head brace and the stub sill. This crack propagated across the front sill pad, into the front sill pad to shell fillet weld and stopped at the body bolster pad.

Figure A-49: Photographs showing the condition of tank car CTCX 735617

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Tank car TILX 316572

Table A-50
Consist position 52
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upright, compressed between cars TILX 316319, CTCX 735617, CTCX 735526 and TILX 316622 (consist 50, 51, 53 and 54) in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The tank was extensively fire-damaged with flaking and red discolouration.
Shell The car exhibited crushing deformation with extreme loss of volume over most of its length. The top of the shell contained a large rupture adjacent to the manway. A transverse rupture nearly separated the B end head from the shell. The shell was extremely crushed around the BOV and contained 2 aligned punctures through both sides.
Heads The A end contained multiple impact marks and 2 punctures just below the middle. The top-right edge was crushed.
The B end head was extremely deformed and partially separated from the BR bolster and shell.
Bottom outlet valve The fabricated skid was extensively impact damaged and had partially separated from the shell. The BOV adaptor had sheared off at the flange, exposing a closed BOV ball. The handle extension and securement mechanism were missing.
Top fittings The housing cover had separated and was missing. The wall of the housing was slightly deformed. The housing was partially filled with dirt. The liquid valve nozzle had sheared off. The other fitting that was visible had no impact damage.
Pressure relief device The PRD inside the housing was partially covered by dirt; the visible portion was not damaged.
Manway The manway cover was closed with fire damage but no visible impact damage.
Stub sills and couplers The A end stub sill was bent to the left.
The B end stub sill was impact damaged and its coupler was broken.

Figure A-50: Photographs showing the condition of tank car TILX 316572

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Tank car CTCX 735526

Table A-51
Consist position 53
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest on its left side in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The tank was extensively fire-damaged with red discolouration.
Shell The car exhibited crushing deformation with extreme loss of volume in the middle. The shell had a large rupture on the right side at the A end head-to-shell weld. It was punctured on the right side at the B end head-to-shell and bolster pad welds.
Heads The A end was extensively deformed with deep horizontal buckles in the middle.
The right hand portion of the B end head had a large dent with a buckled edge on the right side. At the bottom-right, this dent was coincident with the puncture at the head-to-shell weld. There was also a small rupture at the top-right edge of the dent.
Bottom outlet valve The cast skid was impact damaged on the left side. The BOV adaptor had sheared off at the flange, exposing a closed and oxidized BOV ball. The handle was in the closed position and secured.
Top fittings The housing was impact damaged and askew. It was only partially visible due to the position of the car after staging. The fittings inside were not visible for inspection.
Pressure relief device The PRD was only partially visible due to the position of the car after staging. No impact damage was observed.
Manway The manway was only partially visible due to the position of the car after staging. It was closed with a gap between the cover and nozzle. Three bolts were visible: 1 was broken and another was released.
Stub sills and couplers The A end stub sill was bent and partially broken behind the striker plate. The coupler was missing.
The B end stub sill was bent to the right and broken. Its coupler was broken.

Figure A-51: Photographs showing the condition of tank car CTCX 735526

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Tank car TILX 316622

Table A-52
Consist position 54
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its top-left (almost upside down) between cars TILX 316572, CTCX 735526 and NATX 310508 (consist no. 52, 53 and 56) in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The tank was extensively fire-damaged with red discolouration and blistering (metal loss).
Shell The shell was extensively crushed from about midway between the A end and the middle of the B end, with large ruptures in the most deformed areas. Some of these ruptures were associated with shell welds. There was a puncture on the top near the A end.
Heads The A end head had a dent at the top edge.
The B end head was extensively deformed and had a large dent on the top-right. The head was separated from the shell at the bottom, with a circumferential rupture extending from the left side of the stub sill, through the front sill pad location, and up to the dent on the top-right. Some of this rupture was associated with the BR body bolster pad fillet weld.
Bottom outlet valve The shell was extensively deformed and had ruptured in the area of the fabricated skid. The skid itself was not present on the visible portions of shell. The BOV adaptor had sheared off at the flange. Due to the orientation of the Tank car after staging, the condition of the BOV ball could not be determined. The handle extension had separated from the BOV. The handle assembly and securement mechanism were extensively deformed but remained attached to a separated portion of shell.
Top fittings The housing had separated at the flange. All of the bolts securing the housing to the flang were sheared. Nine of the 20 bolts clamping the flange to the top fitting nozzle were also sheared off. These bolts were located on the left side and the bolt fracture surfaces were stretched towards the right, indicating the housing was impacted from the left to the right. All of the fittings inside had sheared off or were impact damaged.
Pressure relief device The top portion of the PRD was sheared off.
Manway The manway cover is closed with 3 of the 6 bolts released, 1 bolt was broken above the nut.
Stub sills and couplers The A end stub sill was impact damaged and slightly bent downward. The coupler was broken.
The B end stub sill was broken apart. The front sill pad had separated from the tank at the fillet weld. The BR body bolster had partially separated from its pad and the pad had also partially separated from the tank at the fillet weld. The coupler was missing.

Figure A-52: Photographs showing the condition of tank car TILX 316622

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Tank car WFIX 130585

Table A-53
Consist position 55
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its right side, on top of the 7 cars ranging from car ACFX 71121 (consist no. 39) to TILX 316523 (consist no. 46) in the main pile-up and parallel to the direction of movement.
Extent of fire damage The top portion of the shell between the top fittings and the B end and the B end head exhibited extensive fire damage with flaking and red discolouration. There was a burn-through on the top of first ring from the B end.
Shell The shell was dented on the bottom-left between the A end and BOV. It had a shallow buckle on the top-right near the B end, with a burn-through. The region near the B end was slightly bulged. A small (less than 1-foot long) longitudinal rupture with red discolouration and product residue was located on the left side near the shell-to-B end head junction. This rupture was not associated with any visible deformation. It was likely due to internal pressurization of the tank during the post-derailment fire (see main text).
Heads The A end head had no significant impact damage.
The B end head had a shallow dent in the bottom-right quadrant near the stub sill. It had 3 small ruptures on the left side near the edge of the head. These ruptures had a red discolouration and product residue. There was no dent in this region. It is likely that these ruptures were also due to tank pressurization during the post-derailment fire (see shell and main text).
Bottom outlet valve The fabricated skid was impact damaged on the right side. The shell adjacent to the damaged portion of the skid had an impact mark. The BOV adaptor had sheared off at the flange, exposing a closed and oxidized BOV ball. The handle assembly and securement mechanism were missing. The two securement mechanism pads were in the dented portion of the shell. A rusty residue was noted on the BOV ball suggesting there was product seepage.
Top fittings The housing cover was slightly deformed but closed and secured. Product residue was noted in the gap between the cover and housing suggesting some of the fittings may have released product. The fittings inside the housing were not visible for inspection.
Pressure relief device The PRD inside the housing was not visible for inspection.
Manway The manway cover is closed with no visible impact damage.
Stub sills and couplers The A end stub sill was broken and bent to the right.
The B end stub sill was broken and bent downward. Both couplers were missing.

Figure A-53: Photographs showing the condition of tank car WFIX 130585

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Tank car NATX 310508

Table A-54
Consist position 56
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upright and slightly tilted to the right side between cars TILX 316622 and CTCX 735525 (consist no. 54 and 57) in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The car was extensively oxidized with red discolouration, blistering and flaking around the punctures in the A end head and the rupture between the BOV and A end.
Shell The shell was compressed on the top-left near the B end and on the bottom-right near the A end. It had deep angled buckles extending from the BOV towards the A end. There was a short longitudinal rupture in the large dent on the bottom between the BOV and the A end.
Heads The A end head exhibited numerous shallow dents. It had a rectangular puncture near the top and a second puncture on the bottom-right edge.
The B end head had no significant impact damage.
Bottom outlet valve The fabricated skid was unremarkable. The BOV adaptor had sheared off at the flange, exposing a closed and oxidized BOV ball. The handle assembly and securement mechanism were not visible for inspection due to the orientation of the car after staging.
Top fittings The housing had no visible impact damage. The fittings inside were not visible for inspection.
Pressure relief device The top portion of the PRD was impact damaged.
Manway Part of the manway was visible indicating the cover was closed. The condition of the bolts was not determined.
Stub sills and couplers The A end stub sill was broken and bent to the right. The bottom shelf was broken.
The B end stub sill was bent to the right.

Figure A-54: Photographs showing the condition of tank car NATX 310508

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Tank car CTCX 735525

Table A-55
Consist position 57
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest on its left side, crushed between cars NATX 310508 and ACFX 79383 (consist no. 56 and 58) in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The B end and the portion of the shell around the large rupture showed extensive fire damage (red discolouration). The rest of the tank was oxidized.
Shell The top and bottom of the shell were extremely compressed by adjacent cars. This extreme deformation resulted in large transverse ruptures located between the B end and top fittings that nearly separated the shell into two portions. There was also a transverse buckle on the bottom near the A end and a deep dent on the top-left near the B end.
Heads The left side of the A end head contained several dents.
The B end head had a small dent with an impact mark near the top.
Bottom outlet valve The cast skid was broken at the side pointing towards the B end. The crack extended to the skid-to-shell weld and into the rupture in the shell. The BOV adaptor had sheared off at the flange, exposing a closed and oxidized BOV ball. The handle was closed and secured.
Top fittings The housing was missing and the top fittings were sheared off.
Pressure relief device The PRD nozzle was sheared off at the reinforcement pad.
Manway The manway cover was closed with all 6 bolts damaged or released.
Stub sills and couplers The A end stub sill had minor impact damage.
The B end stub sill was broken and distorted to the right. The coupler was missing.

Figure A-55: Photographs showing the condition of tank car CTCX 735525

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Tank car ACFX 79383

Table A-56
Consist position 58
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest upright, pushed up against car CTCX 735525 (consist 57) in the main pile-up and angled relative to the direction of movement.
Extent of fire damage The car was oxidized with red discolouration around the punctures.
Shell The sides of the shell were deformed inward with a larger dent on the left side in the middle with a puncture in it. The body-mounted brake cylinder was torn off at the weld to the shell, with the crack breaching the tank.
Heads The A end head was slightly dented on the right side and at the bottom.
The B end head had an impact mark with a small puncture at the bottom-right. It had several larger dents in the top-right quadrant with 3 punctures with jagged edges.
Bottom outlet valve This car did not have a skid; impact protection was provided by the BOV saddle. The base, handle and cap assembly had sheared off at the saddle as designed, exposing a closed plug.
Top fittings The housing was closed, slight askew and not secured. The top fittings inside had no visible impact damage.
Pressure relief device The top of the B end PRD was dented. The A end PRD had no visible impact damage.
Manway The manway cover was closed with 4 of the 8 bolts broken or loose.
Stub sills an couplers Both stub sills were bent to the left and broken, exposing the draft gear inboard lugs. Bot couplers were missing.

Figure A-56: Photographs showing the condition of tank car ACFX 79383

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Tank car PROX 44428

Table A-57
Consist position 59
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest upside down, pushed under car CTCX 735525 (consist 57) in the main pile-up and slightly angled relative to the direction of movement.
Extent of fire damage The area around the rupture and the bottom portion of the shell had extensive fire damage (red discolouration, flaking and metal loss). The rest was oxidized.
Shell The top and bottom of the shell were extremely compressed and were less than 1 foot apart in the middle of the car. This extreme deformation resulted in large transverse ruptures in the vicinity of the BOV and top fittings. The car was nearly separated into 2 portions.
Heads The A end head was slightly dented on the bottom-left edge
The B end head was completely dented inward.
Bottom outlet valve The BOV area was not visible for inspection.
Top fittings The top fittings were not visible for inspection.
Pressure relief device The PRD was not visible for inspection.
Manway The manway was not visible for inspection.
Stub sills and couplers The A end stub sill was broken and the coupler was missing.
The B end stub sill was bent to the left and partially separated at the draft gear. The coupler was still connected to the separated A end coupler from car ACFX 79383 (consist 58).

Figure A-57: Photographs showing the condition of tank car PROX 44428

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Tank car PROX 44150

Table A-58
Consist position 60
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest upright, squeezed between cars PROX 44428 and TILX 316533 (consist no. 59 and 61) in the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The car was oxidized with red discolouration in the area around the puncture in the B end.
Shell The aerial views and in-situ photos available show the shell was compressed inward on both side between the top fittings and the A end with a longitudinal buckle on the top. It was also compressed inward on the right side between the top fittings and B end.
Heads The B end head had a shallow dent on its right side and a deep dent with a puncture at the left-bottom edge.
The A end head was not inspected.
Bottom outlet valve The BOV area was not visible for inspection.
Top fittings The housing was closed. Based on aerial and in-situ photographs, it appeared to have no impact damage. The top fittings inside the housing were not visible for inspection.
Pressure relief device Based on aerial and in-situ photographs, the PRD was undamaged.
Manway The manway was closed. Based on aerial and in-situ photographs, it had no damage.
Stub sills and couplers The A end stub sill was not visible for inspection.
The B end stub sill was broken, bent upwards and to the right. The coupler was missing.

Figure A-58: Photographs showing the condition of tank car PROX 44150

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Tank car TILX 316533

Table A-59
Consist position 61
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest upright and slightly tilted to the right, between cars PROX 44150 and ACFX 94578 (consist 60 and 62) at the aft end of the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The exterior finish of this car was oxidized with a rusty discolouration and extensive fire damage above an inclined liquid/vapour line going from about 1/2 of the height at the A end to 2/3 of the height at the B end. There was a burn-through on the left side between the A end and the top fittings.
Shell The top and right side of the shell contained a transverse buckle on either side of the top fittings.
Heads The B end head had a deep dent on the top-right quadrant.
The A end head had no impact damage.
Bottom outlet valve The fabricated skid exhibited some scrape marks. The BOV adaptor had sheared off at the flange exposing a product-covered BOV ball that appeared to be closed. Product was visibly leaking from the BOV. The handle assembly and securement mechanism were extensively deformed and the handle was not secured.
Top fittings The housing cover was significantly deformed but closed and secured. Product residue was noted in the gap between the cover and housing indicating some of the fittings had released product. The fittings inside the housing were not visible for inspection.
Pressure relief device The PRD inside the housing was not visible for inspection.
Manway The manway was closed with no impact damage. A large amount of product residue was noted in the gap between the cover and manway nozzle indicating that the manway had released product.
Stub sills and couplers The A end stub sill was unremarkable.
The B end stub sill was slightly bent to the right. The head brace had separated from the front sill pad at the fillet weld. The coupler was broken.

Figure A-59: Photographs showing the condition of tank car TILX 316533

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Tank car ACFX 94528

Table A-60
Consist position 62
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest on its left side and with its bottom crushed by the ends of cars NATX 310515 and TILX 316528 (consist 63 and 64) at the aft end of the main pile-up and perpendicular to the direction of movement.
Extent of fire damage The exterior finish of this car was extensively oxidized with a rusty discolouration, blistering and metal loss due to flaking.
Shell The shell was extremely deformed (crushed from the bottom to the top, with both side almost touching in the middle). It had a transverse rupture in the left side in the middle and a longitudinal rupture on the top between the middle and A end.
Heads The B end head had a deep dent in the top-left quadrant. It was punctured at the top-left edge near the head-to-shell weld.
The A end head had no impact damage.
Bottom outlet valve The fabricated skid had no impact damage. The BOV adaptor had sheared off at the flange exposing a closed and oxidized BOV ball. The handle and securement mechanism were impact damaged and the handle was not secured.
Top fittings The housing was missing and the fittings were impact damaged.
Pressure relief device The A end PRD nozzle had sheared off; the B end PRD was impact damaged.
Manway The manway was closed.
Stub sills and couplers The A end stub sill was impact damaged and broken. The coupler was missing.
The B end stub sill had no significant impact damage. The coupler knuckle was missing.

Figure A-60: Photographs showing the condition of tank car ACFX 94528

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Tank car NATX 310515

Table A-61
Consist position 63
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upright and slightly tilted to the right adjacent to car TILX 316528 (consist 64) at the aft end of the main pile-up and parallel to the direction of movement.
Extent of fire damage The exterior finish of this car on the B end and bottom was blackened but markings were still visible. The A end and top were extensively oxidized with a rusty colour.
Shell The shell had no significant impact damage. There was a thermal tear on the top-left side below the PRD. This thermal was 2/3 of a ring in length (about 65 inches) by about 6 inches wide. The shell was somewhat bulged around the thermal tear.
Heads The A end head was dented all over with deeper denting and scrape marks in the middle. There was a small puncture associated with one of these scrape marks at the bottom-right edge of this dent. The bottom-right quadrant was also deeply dented.
The B end head had a dent at the edge of the bottom-left quadrant.
Bottom outlet valve The fabricated skid exhibited some scrape marks. The BOV adaptor had sheared off at the flange. The BOV ball was partially obscured by dirt and appeared to be closed. The handle extension was separated from the valve. The handle assembly and securement mechanism were extensively deformed.
Top fittings The housing was closed. The fittings inside were not visible for inspection.
Pressure relief device The PRD had no visible impact damage.
Manway The manway cover was closed when the derailed car came to rest. It was subsequently opened during recovery operations. None of the bolts were damaged.
Stub sills and couplers The A end stub sill was unremarkable. The knuckle was missing.
The B end stub sill was broken and bent to the left. The coupler was missing.

Figure A-61: Photographs showing the condition of tank car NATX 310515

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Tank car TILX 316528

Table A-62
Consist position 64
Orientation in the consist A end leading
Position and orientation of derailed car This car came to rest upright adjacent to car NATX 310515 (consist 63) at the aft end of the main pile-up and parallel to the direction of movement.
Extent of fire damage The exterior finish of this car was blackened but markings were still visible in some areas. It was extensively fire-damaged on the top around the top fittings.
Shell The shell had no significant impact damage.
Heads The A end head was extensively dented and deformed but had no punctures.
The B end head had no impact damage.
Bottom outlet valve The fabricated skid was dented on the B end side. The BOV adaptor had sheared off at the flange exposing a partially open (about 1/5) product-covered BOV ball. The handle extension was bent. The handle was still secured to the impact damaged and deformed securement mechanism.
Top fittings The housing assembly and its closed cover were partially consumed by fire damage. There was no visible impact damage. The top fittings were only partially visible for inspection. The one fitting that was visible had no impact damage. The housing was partially filled with product residue, some of which had spilled out onto the shell. This indicates that product was released from inside the housing assembly.
Pressure relief device The PRD inside the housing was not visible for inspection.
Manway The manway cover was closed when the derailed car came to rest. It was subsequently opened during recovery operations. None of the bolts were impact damaged.
Stub sills and couplers Both stub sills were broken and bent to the right. Both couplers were almost completely separated and hanging from the draft key.

Figure A-62: Photographs showing the condition of tank car TILX 316528

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Tank car NATX 310470

Table A-63
Consist position 65
Orientation in the consist B end leading
Position and orientation of derailed car This car came to rest upright at the aft end of the main pile-up, with the B end truck derailed. The car was re-railed after the derailment.
Extent of fire damage The exterior finish of this car had no fire damage.
Shell The shell had no impact damage.
Heads Both heads had no impact damage.
Bottom outlet valve The fabricated skid and BOV were unremarkable. The handle was secured in the closed position.
Top fittings No visible damage.
Pressure relief device No visible damage.
Manway No visible damage.
Stub sills and couplers The striker face of the B end stub sill was impact damaged on the right side. The coupler shank was broken.

Figure A-62: Photographs showing the condition of tank car TILX 316528

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This lab report is part of the Transportation Safety Board of Canada's investigation report R13D0054.