returned to service after any repairs requiring extensive riveting or calking. Reports must be rendered as prescribed in § 72.103-21.*† [Par. 19] 72.103-20 Marking. Each tank must be marked, thus certifying that the tank complies with all the requirements of this specification. These marks must be as follows: (a) ICC-103 in letters and figures at least three-eighths inch high stamped plainly and permanently into the metal near the center of one outside head of the tank. This mark must also be stenciled on the tank in letters and figures at least 2 inches high. (b) Initials of manufacturer and date of original test of tank in letters and figures at least 3-inch high, stamped plainly and permanently into the metal of the tank immediately below the stamped mark specified in paragraph (a). These initials and date must also be stenciled on the tank in letters and figures at least 2 inches high. (c) Date on which the tank was last tested, pressure to which tested, place where test was made, and by whom, stenciled on the tank. (d) Date on which the safety valves were last tested, pressure to which tested, place where test was made, and by whom, stenciled on the tank. (e) Manhole closure identification mark, see § 80.111 (e) (3). [As amended Dec. 10, 1935]** [Par. 20] 72.103-21 Reports. Before a tank car is placed in service, the party assembling the completed car must furnish to car owner, Bureau of Explosives, and the secretary, mechanical division, American Railway Association, a report in approved form certifying that the tank and its equipment comply with all the requirements of this specification. In case of alterations of the tank or equipment therefor from original design, a similar report must be rendered to the same parties. For the periodic retests of tank and safety valves, other than above mentioned, reports must be rendered to the Bureau of Explosives and to car owner.** [Par. 21] SHIPPING CONTAINER SPECIFICATION 103A RIVETED STEEL TANKS TO BE MOUNTED ON OR TO FORM PART OF A CAR 72.103A-1 Type. Same as specification 103.** [Par. 1] 72.103A-2 Bursting pressure. Same as specification 103.** [Par. 2] 72.103A-3 Material. Same as specification 103.*‡ [Par. 3] 72.103A-4 Thickness and width of plates. Same as specification 103.* [Par. 4] 72.103A-5 Dishing of tank heads. Same as specification 103.*† [Par. 5] 72.103A-6 Riveting. Same as specification 103.** [Par. 6] 72.103A-7 Preparation for calking. Same as specification 103.*† [Par. 7] **For statutory and source citations, see note to §72.1A-1. Page 853 72.103A-8 Calking. Same as specification 103, except that inside calking of the seam formed by attachment of expansion dome to tank is required when the opening in tank shell is cut out to the full diameter of the dome. All rivet heads on inside of tank must be calked.*+ [Par. 8] 72.103A-9 Expansion dome. (a) Same as specification 103, except that the expansion dome must have a capacity of at least 1 percent. (b) Same as specification 103, except that the opening in tank shell within the dome may be cut out to the full diameter of the dome. The inside diameter of dome may exceed 30 inches, provided the tank shell at this point is adequately reinforced. (c) A dome head and manhole ring in one piece, made of steel or other malleable metal, may be used instead of a dished steel plate dome head.* [Par. 9] 72.103A-10 Closures for manholes. (a) Not required. (b) Same as specification 103, except that requirements for inflammable liquids do not apply, but means must be provided for securely closing manhole cover. (c) Same as specification 103.** [Par. 10] 72.103A-11 Gaging devices, and venting, loading, and discharge pipes extending through dome of tanks. Protection not required, but should the tank be equipped with venting, loading, and discharge pipes, the pipes must be tightly closed as prescribed in § 72.103A-12.*† [Par. 11] 72.103A-12 Venting, loading, and discharge pipes. Valves not required, provided the loading and discharge pipes are tightly closed with caps, plugs, or other suitable fittings, and the venting pipe is equipped as prescribed in § 72.103A-14.** [Par. 12] 72.103A-13 Bottom discharge outlets. Bottom discharge outlet with valve prohibited, but tank may be equipped with a bottom washout chamber of malleable metal not subject to rapid deterioration by the lading, complying with the following requirements: (a) The construction and closure of the bottom washout chamber must be such that it is liquid-tight and that when the chamber is broken, loss of contents will not occur. (b) The extreme projection of the bottom washout chamber must be at least 12 inches above the top of rail.*+ [Par. 13] 72.103A-14 Safety valves. Safety valve prohibited, but the tank must be equipped with one vent at least 2 inches in diameter, and the vent must be closed with a frangible disk of lead or other suitable material, of a thickness that will insure rupture at a pressure not higher than 30 pounds per square inch. Vent closure must be so chained or otherwise fastened as to prevent misplacement.*+ [Par. 14, as amended Dec. 10, 1935] 72.103A-15 Fixtures, reinforcements, and other attachments not otherwise specified. Same as specification 103.** [Par. 15] 72.103A-16 Plugs for openings. Same as specification 103.*† [Par. 16] Page 854 **For statutory and source citations, see note to § 72.1A-1. 72.103A-17 Tests of tanks. Same as specification 103, except that acid may be used for filling the tank and dome when testing_tanks which have not been in service more than 12 years.*t [Par. 17] 72.103A-18 Tests of safety valves. See s 72.103A-14.*† [Par. 18] 8 72.103A-19 Retests of tanks. Tanks must be retested as prescribed for original tests in § 72.103A-17. The first retest of tank must be conducted within 4 years after the original test, and subsequent retests at 4-year intervals up to 12 years of service, thereafter at 2-year intervals up to 20 years of service, and annually after 20 years of service. Tanks in service over 12 years must be internally inspected for defects which would make leakage or failure of tank probable during transit, and after repairs are made tank must be tested with water only.* [Par. 19] 72.103A-20 Marking. Same as specification 103. (a) Same as specification 103, except that marking must be ICC103A. (b) Same as specification 103. (c) Same as specification 103. 72.103A-21 Reports. Same as specification 103.*+ [Par. 21] SHIPPING CONTAINER SPECIFICATION 103B RUBBER-LINED RIVETED STEEL TANKS TO BE MOUNTED ON OR TO FORM PART OF A CAR 72.103B-1 Type. Same as specification 103.*+ [Par. 1] 72.103B-2 Bursting pressure. Same as specification 103.** [Par. 2] 72.103B-3 Material. Same as specification 103, except that the following requirements for rubber lining are added: The lining must be acid-resisting rubber, vulcanized or bonded directly or otherwise attached to the metal tank, to provide a nonporous laminated lining. No rubber shall be under tension when applied, except that due to conformation over rivet heads. Interior of tank must be free from scale, oxidation, moisture, and all foreign matter during the lining operation.*+ [Pár. 3] 72.103B-4 Thickness and width of metal plates and thickness of rubber lining. (a) Same as specification 103 for thickness and width of metal plates. (b) Tank must be lined with rubber at least five-thirty-seconds inch thick, except that over all rivets and tank seams the lining must be double thickness. The lining must overlap at least 11⁄2 inches at all edges, which must be straight and be beveled to an angle of approximately 45°. Directly under the dome, vulcanized to the lining on bottom of tank, must be applied a rubber reinforcement pad at least 42 feet square and at least 1/2-inch thick, with edges of pad beveled to an angle of approximately 45°. An opening in this pad for sump is permitted.*+ [Par. 4] *For statutory and source citations, see note to § 72.1A–1. Page 855 72.103B-5 Dishing of tank heads. Same as specification 103.*† [Par. 5] 72.103B-6 Riveting. (a) Same as specification 103. (b) Same as specification 103, except that all rivet heads on inside of tank must be of uniform size and the undersurface of heads must be driven tight against shell. (c) Same as specification 103.** [Par. 6] 72.103B-7 Preparation for calking. Same as specification 103.*† [Par. 7] 72.103B-8 Calking. Same as specification 103, except that inside calking of seam formed by attachment of expansion dome to tank is required when the opening in tank shell is cut out to full diameter of dome. All plates, castings, and rivet heads on inside of tank must be calked. All projecting edges of plates, castings, and rivet heads on inside of tank must be rounded and free from fins and other irregular projections. Castings must be free from porosity.** [Par. 8] 72.103B-9 Expansion dome. (a) Same as specification 103, except that expansion dome must have a capacity of at least 1 percent. (b) Same as specification 103, except that manhole opening must be at least 18 inches in diameter, and the opening in tank shell within dome may be cut out to full diameter of dome. The inside diameter of dome may exceed 30 inches, provided tank shell at this point is adequately reinforced. (c) A dome head and manhole ring in one piece, made of steel or other malleable metal, may be used instead of a dished steel plate dome head.** [Par. 9] 72.103B-10 Closures for manholes. (a) Not required. (b) Same as specification 103, except that requirements for inflammable liquids do not apply, but means must be provided for securely closing manhole cover. (c) Manhole cover may be made of any suitable metal. The top, bottom, and edge of manhole cover must be covered with rubber as prescribed in §§ 72.103B-3, 72.103B-4. The top and edge must be well painted with an age-resisting paint to protect the rubber from light rays, or the rubber on outside of manhole cover must be protected by an additional metal-covering device spanning the entire manhole cover and designed to hold the filling and discharge opening plug tightly in place.*† [Par. 10] 72.103B-11 Gaging devices, and venting, loading, and discharge pipes extending through dome of tanks. Protection not required. These fittings must be of approved design. When these fittings are omitted, the manhole cover must be constructed with top filling and discharge opening which must be tightly closed with suitable fitting as prescribed in § 72.103B-16.* [Par. 11] 72.103B-12 Venting, loading, and discharge pipes. Not required, but when installed, these pipes and their closures must be of metal and have all surfaces covered with rubber as prescribed in § 72.103B-3. Pipes must be supported at their lower end. When these pipes are not installed, an opening must be provided in manhole cover Page 856 **For statutory and source citations, see note to § 72.1A–1. for filling and discharging the tank and be tightly closed as prescribed in § 72.103B-16.*+ [Par. 12] 72.103B-13 Bottom discharge outlets. Bottom discharge outlet prohibited.*+ [Par. 13] 72.103B-14 Safety valves. Safety valve prohibited. The tank must be equipped with an approved safety vent when the nature of lading requires, and vent, when used, must be closed with a frangible disk of lead or other suitable material, of a thickness that will insure rupture at a pressure not higher than 30 pounds per square inch. Vent closure must be so chained or otherwise fastened as to prevent misplacement.* [Par. 14, as amended Dec. 10, 1935] 72.103B-15 Fixtures, reinforcements, and other attachments not otherwise specified. Same as specification 103.*+ [Par. 15] 72.103B-16 Plugs for openings. Plugs used to close top filling and discharge opening in manhole cover must be made of vulcanized rubber or of metal entirely covered with vulcanized rubber, securely held in closed position by some mechanical means.*t [Par. 16] 72.103B-17 Tests of tanks. Same as specification 103. Test of tank must be made before tank is rubber-lined. After tank is rubberlined, no further tests are required.*+ [Par. 17] 72.103B-18 Tests of safety valves. See § 72.103B-14.*+ [Par. 18] 72.103B-19 Retests of tanks. Not required.** [Par. 19] 72.103B-20 Marking. Same as specification 103. (a) Same as specification 103, except that marking must be ICC103B. (b) Same as specification 103. (c) "Rubber-lined tank. Pressure test not required," stenciled on tank instead of record of test of tank. (d) Not required.*+ [Par. 20] 72.103B-21 Reports. (a) Before a tank car built to comply with this specification is placed in service, the party assembling the completed car must furnish to car owner, Bureau of Explosives, and the secretary, mechanical division, American Railway Association, a report in approved form certifying that the tank and its equipment comply with all the requirements of this specification. (b) Before a tank car tank not originally built under this specification is lined with rubber, a report certifying that the tank and its equipment have been brought into compliance with the tank requirements of specification 103B must be furnished by car owner to the party who is to apply the rubber lining. A copy of this report, together with report in approved form certifying that tank has been lined in compliance with all requirements of this specification must be furnished by party lining the tank to car owner, Bureau of Explosives, and the secretary, mechanical division, American Railway Association. (c) In case of alterations of the tank or equipment therefor from original design, a similar report must be rendered to the same parties.** [Par. 21] **For statutory and source citations, see note to § 72.1A-1. Page 857 [857] |