179.500-18—Inspection and reports.
(a)
Before a tank car is placed in service, the party assembling the completed car shall furnish to car owner, Bureau of Explosives, and the Secretary, Mechanical Division, Association of American Railroads, a report in proper form certifying that tanks and their equipment comply with all the requirements of this specification and including information as to serial numbers, dates of tests, and ownership marks on tanks mounted on car structure.
(2)
Inspector shall stamp his official mark on each forging or seamless tube accepted by him for use in making tanks, and shall verify proper application of heat number to such material by occasional inspections at steel manufacturer's plant.
(4)
Inspector shall make inspection of inside surface of tanks before necking-down, to insure that no seams, cracks, laminations, or other defects exist.
(5)
Inspector shall fully verify compliance with specification, verify heat treatment of tank as proper; obtain samples for all tests and check chemical analyses; witness all tests; and report minimum thickness of tank wall, maximum inside diameter, and calculated value of D, for each end of each tank as prescribed in § 179.500-4(c).
(6)
Inspector shall stamp his official mark on each accepted tank immediately below serial number, and make certified report (see paragraph (c) of this section) to builder, to company or person for whose use tanks are being made, to builder of car structure on which tanks are to be mounted, to the Bureau of Explosives, and to the Secretary, Mechanical Division, Association of American Railroads.
(Place)
(Date)
Steel Tanks
It is hereby certified that drawings were submitted for these tanks under AAR Application for Approval ______ and approved by the AAR Committee on Tank Cars under date of ______.
Built for ____________ Company
Location at
Built by ____________ Company
Location at
Consigned to _________ Company
Location at
Quantity
Length (inches)
Outside diameter (inches)
Marks stamped into tank as required in § 179.500-17 are:
DOT-107A* * * *
Serial numbers __ to __ inclusive
Inspector's mark
Owner's mark
Test date
Water capacity (see Record of Hydrostatic Tests).
Tare weights (yes or no) (see Record of Hydrostatic Tests).
These tanks were made by process of
Steel used was identified as indicated by the attached list showing the serial number of each tank, followed by the heat number.
Steel used was verified as to chemical analysis and record thereof is attached hereto. Heat numbers were stamped into metal. All material was inspected and each tank was inspected both before and after closing in ends; all material accepted was found free from seams, cracks, laminations, and other defects which might prove injurious to strength of tank. Processes of manufacture and heat-treatment of tanks were witnessed and found to be efficient and satisfactory.
Before necking-down ends, each tank was measured at each location prescribed in § 179.500-4(c) and minimum wall thickness in inches at each location was recorded; maximum inside diameter in inches at each location was recorded; value of D in inches at each location was calculated and recorded; maximum fiber stress in wall at location showing larger value for
(D2 d2)/(D2−d2)
was calculated for 7/10 the marked test pressure and recorded. Calculations were made by the formula:
S=[0.7P(D2−d2)/(D2 d2)]
Hydrostatic tests, tensile test of material, and other tests as prescribed in this specification, were made in the presence of the inspector, and all material and tanks accepted were found to be in compliance with the requirements of this specification. Records thereof are attached hereto.
I hereby certify that all of these tanks proved satisfactory in every way and comply with the requirements of Department of Transportation Specification No. 107A* * * *.
(Signed)
(Inspector)
(Place)
(Date)
Record of Chemical Analysis of Steel for Tanks
Numbered ____ to ____ inclusive
Size _ inches outside diameter by _ inches long
Built by ____________ Company
For _______________ Company
These analyses were made by
(Signed)
(Place)
(Date)
Record of Chemical Analysis of Steel in Tanks
Numbered ____ to ____ inclusive
Size __ inches outside by __ inches long
Built by ____________ Company
For _______________ Company
(Signed)
(Place)
(Date)
(Signed)
(Place)
(Date)
(Signed)
[Amdt. 179-32, 48 FR 27708, June 16, 1983, as amended by 66 FR 45391, Aug. 28, 2001]