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Safety Recommendation Details

Safety Recommendation R-95-013
Details
Synopsis: ON 6/6/94, A CONDUCTOR FOR THE NORFOLK SOUTHERN RAILWAY COMPANY DETECTED PRODUCT LEAKING FROM THE BOTTOM OF TANK CAR UTLX 79211 IN THE NORFOLK SOUTHERN HARRY DEBUTTS YARD IN CHATTANOOGA, TENNESSEE. THE TANK CAR CONTAINED 12,184 GALLONS OF A 75-PERCENT CONCENTRATION OF ARSENIC ACID, WHICH IS CLASSIFIED AS A POISONOUS MATERIAL & ALSO DESIGNATED AS A MARINE POLLUTANT UNDER THE DEPARTMENT OF TRANSPORTATION HAZARDOUS MATERIALS REGULATIONS.
Recommendation: THE NTSB RECOMMENDS THAT THE UNION TANK CAR COMPANY: EVALUATE & MODIFY, AS NECESSARY, THE QUALITY ASSURANCE PROGRAM FOR THE COMPANY'S TANK CAR FACILITIES TO ENSURE THAT TANK CARS ARE CONSTUCTED & MODIFIED OR REPAIRED IN ACCORDANCE WITH APPROVED DESIGNS.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Railroad
Location: Chattanooga, TN, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA94SZ011
Accident Reports: ‚ÄčTank Car Failure and Release of Arsenic Acid
Report #: HZM-95-01
Accident Date: 6/6/1994
Issue Date: 3/2/1995
Date Closed: 8/29/1995
Addressee(s) and Addressee Status: Union Tank Car Company (Closed - Acceptable Action)
Keyword(s): Hazmat

Safety Recommendation History
From: NTSB
To: Union Tank Car Company
Date: 8/29/1995
Response: THE BOARD UNDERSTANDS THAT UNION HAS IMPLEMENTED THE ASSOCIATION OF AMERICAN RAILROADS (AAR) QUALITY ASSURANCE PROGRAM, & THAT ALL UNION TANK CAR FACILITIES HAVE RECEIVED THE AAR CERTIFICATION FOR ASSURANCE QUALITY.. THE BOARD CONCURS THAT THE STANDARDS FOR AAR CERTIFICATION INCLUDE THE NECESSARY ELEMENTS FOR AN EFFECTIVE QUALITY ASSURANCE PROGRAM. FURTHER, BASED ON DISCUSSIONS BETWEEN THE BOARD'S HAZARDOUS MATERIALS STAFF & UNION TANK CAR OFFICIALS REGARDING UNION'S SPECIFIC QUALITY ASSURANCAE PRACTICES, THE BOARD BELIEVES THAT THE INTENT OF THE RECOMMENDATION HAS BEEN MET. R-95-13 HAS THEREFORE BEEN CLASSIFIED "CLOSED--ACCEPTABLE ACTION."

From: Union Tank Car Company
To: NTSB
Date: 6/21/1995
Response: AS OF 1/1/94, ALL UNION TANK CAR CO. MANUFACTURING & REPAIR FACILITIES HAVE RECEIVED AAR QUALITY ASSURANCE CERTIFICATION. THIS CCERTIFICATION REQUIRES PUBLICATION OF A QUALITY ASSURANCE MANUAL FOR EACH UNIONTANK CAR CO. FACILITY, DETAILING OUR QUALITY ASSURANCE PROGRAM FOR THAT FACILITY. THE QUALITY ASSURANCE PROGRAM IS REVIEWED BY AN INDEPENDENT QUALITY ASSURANCE CONTRACTOR ON BEHALF OF THE AAR, & IS NOT ACCEPTED UNTIL IT MEET THE REQUIREMENT OF THE AAR SPECIFICATION FOR QUALITY ASSURANCE, M-1003. AFTER THE MANUAL'S ACCEPTANCE, THE FACILITY IS AUDITED BY THE QUALITY CONTRACTOR & RECOMMENDED FOR CERTIFICATION AFTER ALL DISCREPANCIES HAVE BEEN RESOLVED. THE AAR QUALITY ASSURANCE COMMITTEE THEN REVIEWS THE APPLICATION & APPROVES THE FACILITY IF IT MEETS ALL PERTINENT CRITERIA. AS A RESULT OF THIS PROCCESS, WE NOW HAVE A FULLY IMPLEMENT AAR CERTIFIED QULITY ASURANCE PROGRAM IN EFFET AT ALL OF OUR FACILITIES, ASSURING THAT TANK CARS ARE CONSTRUCTED & MODIFIED OR REPAIRED IN ACCORDANCE WITH APPROVED DESIGNS.

From: NTSB
To: Union Tank Car Company
Date: 5/8/1995
Response: THE BOARD NOTES THAT UNION WILL EVALUATE ITS QUALITY ASSURANCE PROGRAM AS RECOMMENDED. UPON COMPLETION OF UNION'S EVALUATION, THE BOARD WOULD APPRECIATE INFO ABOUT ANY IMPROVEMENTS MADE TO THE COMPANY'S QUALITY ASSURANCE PROGRAM. PENDING COMPLETION OF UNION'S EVALUATION, R-95-13 IS CLASSIFIED "OPEN--ACCEPTABLE RESPONSE."

From: Union Tank Car Company
To: NTSB
Date: 4/4/1995
Response: UNION TANK CAR COMPANY DOES NOT AGREE THAT THE RELEASE OF ARSENIC ACID FROM UTLX 79211 WAS "CAUSED BY MISALIGNMENT OF SUMP & THE HOUSING GUIDE FOR THE EDUCTION PIPE, WHICH RESULTED IN MECHANICAL DAMAGE TO THE COATING OF THE TANK CAR AT THE SUMP & THE SUBSEQUENT CORROSION & FAILURE OF THE TANK SHELL." UNION TANK CAR IS OF THE POSITION THAT THE NTSB DID NOT FULLY CONSIDER ALL OF THE EVIDENCE IN MAKING ITS FINDINGS. UNION TANK CAR COMPANY WILL EVALUATE ITS QUALITY ASSURANCE PROGRAM FOR THE COMPANY'S TANK CAR FACILITIES, FOR THE PURPOSE OF DETERMINING WHETHER TANK CARS ARE CONSTRUCTED & MODIFIED OR REPAIRED IN ACCORDANCE WITH APPROVED DESIGNS.