1 Tank must be tested to a pressure of 60 pounds per square inch and safety valves be set to open at a pressure of 25 pounds per square inch.

2 Tanks and their appurtenances must have been originally designed or subsequently reconstructed for the transportation of acids.

3 Safety valves on these cars must be set to open at a pressure not exceeding 225 pounds per square inch.

4 Tank cars equipped with safety vents must have the vent closure so chained or otherwise fastened as to prevent misplacement.

These cars must not be used for shipments of smokeless powder in water unless equipped with positive closure type bottom outlet valves.

Tanks made under specification BE-27 and mounted on a car, and classified as multi-unit tank cars prior to October 1, 1930, may be continued in service until further order of the Commission, provided they have been properly retested in accordance with the requirements for specification ICC-27 multi-unit tank cars, and are fitted with valves, valve protection devices, and safety devices of approved type.

7 Tanks must be restenciled to proper 105A100, 105A100-W or 105 A100 AL-W classifications within 2 years from Aug. 31, 1956.

[Reserved]

Cars built prior to Aug. 31, 1956, equipped with safety valves having a pressure setting of 35 pounds per square inch may be used. Cars equipped with 25 pounds per square inch safety valves may be continued in service but these valves may not be reset to 35 pounds per square inch without changing spring to a design suitable for the increased pressure setting.

10 Existing tanks built for materials and equipped with fittings complying with these specifications must be restenciled to indicate proper classification.

11163C, 103C-W and 103A-AL-W (§§ 78.283 and 78.292 of this chapter) tank cars built prior to August 31, 1956 equipped with a safety valve having a pressure setting of 45 psi. may be used. Cars equipped with 45 psi. safety valves may be continued in service but these valves may be reset to 35 psi. by changing the spring to a design suitable for the decreased pressure setting.

or

12 Tanks built as Spec. ICC-105 A100-W 105 A100 AL-W (§ 78.285 or $78.294 of this chapter) may be altered and reclassified as Spec. 105A200-W or 105 A 200 AL-W (§ 78.307 or § 78.308 of this chapter) respectively, by installing safety valves, retesting and stenciling in accordance with the applicable specification for the transportation of commodities authorized in Spec. ICC-105A200-W or 105A200AL-W tanks.

13 The test pressures of tanks built in the United States prior to January 1, 1956 may be increased to comply with current Specification ICC-107A. Original and revised test pressures must be indicated and may be shown on a plate attached to the bulkhead of the car.

(b) Any riveted tank car after repairs requiring extensive riveting or calking must be retested as prescribed in paragraph (g) of this section, before the tank is returned to service.

(c) For detailed procedure to be followed in making repairs or alterations to tanks of all tank car classifications, together with methods of filing application for securing approval from the Secretary of the Mechanical Division, Association of American Railroads, see Appendix R, Association of American Railroads Code for Repairs to Tank Car Tanks.

(d) For repairs to ICC-106A or 110A type of tank or equipment (see §§ 78.275, 78.276, and 78.293 of this chapter) therefor requiring welding, the owner of the tank, or party authorized by the owner, must secure approval from the Association of American Railroads' committee on tank cars of such repairs, and the welding and stress-relieving must be the same as authorized for manufacture of tank. Tank must be retested as prescribed in paragraph (g) of this section, before being returned to service.

(e) A tank car other than of the ICC106A or 110A (§§ 78.275, 78.276, and 78.293 of this chapter) and 107A

(§ 78.277 of this chapter) type that bears evidence of damage to the metal by fire must be withdrawn from transportation service: Provided, however, That where the damage to the tank is local only or confined to a section not exceeding 25 percent of the tank surface, the damaged material may be replaced.

(1) Tanks of ICC-106A, 110A, and 107A (§§ 78.275, 78.276, 78.293, and 78.277 of this chapter) type exposed to the action of fire must not again be placed in service until they have been inspected inside and outside, to determine that no reduction in wall thickness has resulted, and properly heat-treated and retested. These operations must be carried out, supervised, and reported, as prescribed by these specifications for original heattreatment and test.

(f) After alterations of tank cars or equipment therefor from original design, a certificate of compliance with the respective specification must be furnished' to the car owner, to the Bureau of Explosives, and to the Secretary, Mechanical Division, Association of American Railroads.

(g) Tanks, interior heater systems and safety valves must be retested at

intervals of time as specified in Retest Tables 1, 2, and 3.

(1) Each tank must be retested by completely filling the tank and manway nozzle, or expansion dome, with water or other liquid of similar viscosity having a temperature which must not exceed 100 degrees Fahrenheit during retest and applying a pressure as specified. The specified pressure must be held for the minimum period prescribed without leakage or evidence of distress. Calking of welded joints to stop leaks developed during retests is prohibited. Tanks in service 10 years or over must be internally inspected and interior heater systems inspected for defects which would make leakage or failure probable during transit.

(2) Anchor rivet housings, if used, must not be removed during retest. They shall be retested by applying an air pressure of 100 pounds per square inch through openings in the tank shell and must show no leakage.

(3) The tank lagging and jacket need not be removed unless leakage is indicated by a drop in pressure. When lagging is not removed, the prescribed test pressure must be held for the minimum number of minutes shown in Tables 1 and 3 for tests under this condition.

(4) Interior heater systems shall be retested with hydrostatic pressure and shall be tight at 200 pounds per square inch.

(5) Retests of exterior heater systems is not a specification requirement.

(6) Retest of safety valves: Each valve must be retested by air, or inert gas and must open at the prescribed pressure within tolerances specified or below maximum pressure permitted and must be vapor tight at or above prescribed limits. See Tables 1, 2, and 3.

(7) Repairs: Tanks must be retested before being returned to service after any repairs requiring welding, riveting or calking of rivets. Rubber lined tanks must be retested before lining is renewed. Interior heater systems must be retested after repairs or renewals of any part of heater systems.

(8) Retests of all tanks and safety valves must be certified by party making tests to owners of tank cars. Certifications must show initials and numbers of cars, pressure to which tested, date of test, place of test, and by whom test is made. Reports of latest retests must be retained by car owner until the next retest has been accomplished and recorded.

(9) Periodic retests of metal tanks, safety valves and interior heater systems, except cars in chlorine service and tanks to specifications ICC-106A500, 106A500X, 106A800, 106A800X, 106A800NCI, 107A or 110A500-W, may be made at any time during the calendar year the retest falls due, as follows:

*

1 Tank must be tested to a pressure of 60 pounds per square inch and safety valves be set to open at a pressure of 25 pounds per square inch.

2 Tanks and their appurtenances must have been originally designed or subsequently reconstructed for the transportation of acids.

3 Safety valves on these cars must be set to open at a pressure not exceeding 225 pounds per square inch.

4 Tank cars equipped with safety vents must have the vent closure so chained or otherwise fastened as to prevent misplacement.

These cars must not be used for shipments of smokeless powder in water unless equipped with positive closure type bottom outlet valves.

Tanks made under specification BE-27 and mounted on a car, and classified as multi-unit tank cars prior to October 1, 1930, may be continued in service until further order of the Commission, provided they have been properly retested in accordance with the requirements for specification ICC-27 multi-unit tank cars, and are fitted with valves, valve protection devices, and safety devices of approved type.

7 Tanks must be restenciled to proper 105A100, 105A100-W or 105A100AL-W classifications within 2 years from Aug. 31, 1956.

8 [Reserved]

Cars built prior to Aug. 31, 1956, equipped with safety valves having a pressure setting of 35 pounds per square inch may be used. Cars equipped with 25 pounds per square inch safety valves may be continued in service but these valves may not be reset to 35 pounds per square inch without changing spring to a design suitable for the increased pressure setting.

10 Existing tanks built for materials and equipped with fittings complying with these specifications must be restenciled to indicate proper classification.

1103C, 103C-W and 103A-AL-W (§§ 78.283 and 78.292 of this chapter) tank cars built prior to August 31, 1956 equipped with a safety valve having a pressure setting of 45 psi. may be used. Cars equipped with 45 psi. safety valves may be continued in service but these valves may be reset to 35 psi. by changing the spring to a design suitable for the decreased pressure setting. 12 Tanks built as Spec. ICC-105 A100-W 105 A100 AL-W (§ 78.285 or $78.294 of this chapter) may be altered and reclassified as Spec. 105A200-W or 105 A 200 AL-W ($ 78.307 or § 78.308 of this chapter) respectively, by installing safety valves, retesting and stenciling in accordance with the applicable specification for the transportation of commodities authorized in Spec. ICC-105A200-W or 105A200AL-W tanks.

or

13 The test pressures of tanks built in the United States prior to January 1, 1956 may be increased to comply with current Specification ICC-107A. Original and revised test pressures must be indicated and may be shown on a plate attached to the bulkhead of the car.

(b) Any riveted tank car after repairs requiring extensive riveting or calking must be retested as prescribed in paragraph (g) of this section, before the tank is returned to service.

(c) For detailed procedure to be followed in making repairs or alterations to tanks of all tank car classifications, together with methods of filing application for securing approval from the Secretary of the Mechanical Division, Association of American Railroads, see Appendix R, Association of American Railroads Code for Repairs to Tank Car Tanks.

(d) For repairs to ICC-106A or 110A type of tank or equipment (see §§ 78.275, 78.276, and 78.293 of this chapter) therefor requiring welding, the owner of the tank, or party authorized by the owner, must secure approval from the Association of American Railroads' committee on tank cars of such repairs, and the welding and stress-relieving must be the same as authorized for manufacture of tank. Tank must be retested as prescribed in paragraph (g) of this section, before being returned to service.

(e) A tank car other than of the ICC106A or 110A (§§ 78.275, 78.276, and 78.293 of this chapter) and 107A

(§ 78.277 of this chapter) type that bears evidence of damage to the metal by fire must be withdrawn from transportation service: Provided, however, That where the damage to the tank is local only or confined to a section not exceeding 25 percent of the tank surface, the damaged material may be replaced.

(1) Tanks of ICC-106A, 110A, and 107A (§§ 78.275, 78.276, 78.293, and 78.277 of this chapter) type exposed to the action of fire must not again be placed in service until they have been inspected inside and outside, to determine that no reduction in wall thickness has resulted, and properly heat-treated and retested. These operations must be carried out, supervised, and reported, as prescribed by these specifications for original heattreatment and test.

(f) After alterations of tank cars or equipment therefor from original design, a certificate of compliance with the respective specification must be furnished to the car owner, to the Bureau of Explosives, and to the Secretary, Mechanical Division, Association of American Railroads.

(g) Tanks, interior heater systems. and safety valves must be retested at

intervals of time as specified in Retest Tables 1, 2, and 3.

(1) Each tank must be retested by completely filling the tank and manway nozzle, or expansion dome, with water or other liquid of similar viscosity having a temperature which must not exceed 100 degrees Fahrenheit during retest and applying a pressure as specified. The specified pressure must be held for the minimum period prescribed without leakage or evidence of distress. Calking of welded joints to stop leaks developed during retests is prohibited. Tanks in service 10 years or over must be internally inspected and interior heater systems inspected for defects which would make leakage or failure probable during transit.

(2) Anchor rivet housings, if used, must not be removed during retest. They shall be retested by applying an air pressure of 100 pounds per square inch through openings in the tank shell and must show no leakage.

(3) The tank lagging and jacket need not be removed unless leakage is indicated by a drop in pressure. When lagging is not removed, the prescribed test pressure must be held for the minimum number of minutes shown in Tables 1 and 3 for tests under this condition.

(4) Interior heater systems shall be retested with hydrostatic pressure and shall be tight at 200 pounds per square inch.

(5) Retests of exterior heater systems is not a specification requirement.

(6) Retest of safety valves: Each valve must be retested by air, or inert gas and must open at the prescribed pressure within tolerances specified or below maximum pressure permitted and must be vapor tight at or above prescribed limits. See Tables 1, 2, and 3.

(7) Repairs: Tanks must be retested before being returned to service after any repairs requiring welding, riveting or calking of rivets. Rubber lined tanks must be retested before lining is renewed. Interior heater systems must be retested after repairs or renewals of any part of heater systems.

(8) Retests of all tanks and safety valves must be certified by party making tests to owners of tank cars. Certifications must show initials and numbers of cars, pressure to which tested, date of test, place of test, and by whom test is made. Reports of latest retests must be retained by car owner until the next retest has been accomplished and recorded.

(9) Periodic retests of metal tanks, safety valves and interior heater systems, except cars in chlorine service and tanks to specifications ICC-106A500, 106A500X, 106A800, 106A800X, 106A800NCI, 107A

or 110A500-W, may be made at any time during the calendar year the retest falls due, as follows: