nickel chrome iron, this figure to be an average of five 48-hourperiod tests. [As amended Mar. 10, 1937, 2 F.R. 561] (c) Capacity, under the conditions of § 72.5A-3 (d), is 10 United States wine gallons or over. [As added Jan. 13, 1934] (d) Before marking containers to comply with the specification, each manufacturer must obtain and file with the Bureau of Explosives evidence of the proper efficiency of his container and his manufacturing methods by having sample in actual and satisfactory use in the handling of nitric acid other than by rail transportation for a period of 3 months. [As added Jan. 13, 1934] (e) Add subparagraph to § 72.5A-4 (a), as follows: (4) The approximate tare weight in pounds (for example, TW 121). [As added Jan. 13, 1934] (f) Thickness of steel in body and heads of drums made under this specification is authorized to be 2 gauges lighter than as specified in specification 5A. [As added Jan. 7, 1938]* [Pars. 1-3, 5–7] SHIPPING CONTAINER SPECIFICATION 5D STEEL BARRELS OR DRUMS 72.5D-1 Compliance with specification 5A; exceptions. (a) Containers must comply with all provisions of specification 5A except as follows: (b) Restrictions in §§ 72.5A−3 (c) (1), (3); 72.5A−3 (g) (4) do not apply. [As amended Mar. 15, 1938, effective June 17, 1938, 3 F.R. 653] (c) In place of § 72.5A-3 (e), the following: Complete rubber lining of pliable rubber must be cemented or otherwise applied so as to adhere securely to metal surface, and must be vulcanized so as to be tough and pliable. Closing devices shall be lined with hard or pliable rubber. (d) Add paragraph to § 72.5A-5, as follows: Each lined container must be tested for defect in lining. Container must be filled with salt, alkaline, or acid solution, of sufficient strength to be a good conductor of an electrical current. One terminal of at least 110-volt electrical circuit must be secured to clean surface of container sheet through a sensitive ammeter. The other terminal, with insulation removed, must be submerged in the solution within the container. Ammeter must show zero current reading during test.* [Pars. 1-4] SHIPPING CONTAINER SPECIFICATION 5E STEEL BARRELS OR DRUMS: SINGLE-TRIP CONTAINER 72.5E-1 Compliance with specification 5A; exceptions. (a) Containers must comply with all provisions of specifications 5Á except as follows: (b) (1) Restrictions in §§ 72.5A-3 (c) (2), (3); 72.5A-3 (d); 72.5A-3 (g) (2), (3), (4); 72.5A-3 (h) (3), (4), do not apply. [As amended Mar. 15, 1938, effective June 17, 1938, 3 F.R. 653] *For statutory and source citations, see note to § 72.1A-1. Page 753 (2) Three or more threads for flanges and for engagement of plug, or cap, therewith are authorized in place of five or more prescribed by § 72.5A-3 (h) (2). [As amended Mar. 15, 1938, effective June 17, 1938, 3 F.R. 653] (c) In place of table in § 72.5A-3 (f) (1), the following: (d) For containers not of the full open head type, body sheets are authorized to be 20 gauge and head sheets 18 gauge for marked capacities not over 55 gallons, and 20 gauge body and head sheets are authorized for marked capacities of not over 30 gallons. [As added Mar. 15, 1938, effective June 17, 1938, 3 F.R. 653] (e) Add to § 72.5A-4 (a) the following: (4) The markings STC in letters at least 3 inches high for containers of over 30 gallons capacity and at least 2 inches high for containers of 30 gallons capacity and less. This must be applied immediately below the ICC marks to indicate "single trip container." (f) Distance of drop under § 72.5A-5 (a) (1) is reduced to 4 feet. (g) Pressure under § 72.5A-5 (a) (2) is reduced to 15 pounds. (h) Pressure under § 72.5A-5 (b) is reduced to 7 pounds and the following is added: 8 Containers with nominal capacity of 5 gallons, not equipped with screw-thread closing devices, shall be exempt from air-pressure test. (i) Drums of 25 gallons or greater capacity must be made with heads convex (crowned), but not extending beyond the level of the chimes. The minimum convexity of heads must be five-eighths inch for drums of capacity 25 to 35 gallons, inclusive, and three-fourths inch for larger drums. [As added Mar. 12, 1936, 1 F.R. 48] (j) In place of § 72.5A-3 (h), the following is authorized: Threaded metal flanges and plugs, when used as closures, must have adequate gaskets, be tight fitting, and be constructed so that at least three full threads are engaged when plug is screwed home with gasket in place. [As added Aug. 27, 1936, 1 F. R. 1368] Closures must be of metal with gaskets of suitable material; all parts closing the opening, except cap seal over threaded plug or cap Page 754 must be at least as thick as prescribed for head of container: Provided, That thinner metal closures are authorized for containers of not over 12 gallons capacity when constructed, or fitted with sealing device, so that closure cannot be removed without destroying it or the sealing device. [As added Mar. 15, 1938, effective June 17, 1938, 3 F.R. 653]** [Pars. 1-9] SHIPPING CONTAINER SPECIFICATION 5F STEEL BARRELS OR DRUMS 72.5F-1 Compliance with specification 5A; exceptions. (a) Containers must comply with all provisions of specification 5A except as follows: (b) In place of § 72.5A-3 (c) the following: (1) All seams must be welded or brazed. (2) Bung and valve flanges (spuds) must be welded in place. (c) In place of § 72.5A-3 (d) the following: Containers must have chime reinforcement adequate for its protection. (d) In place of § 72.5A-3 (e) the following: Containers must be coated on the outside with corrosion-preventive material. (e) In place of table in § 72.5A-3 (f) (1) the following: (f) Restrictions in § 72.5A-3 (g) (4) do not apply. [As amended Mar. 15, 1938, effective June 17, 1938, 3 F.R. 653] (g) In place of § 72.5A-3 (h) the following: Threads for connections (valves, bungs, etc.) must be American standard taper pipe threads, tapped to gage, and clean cut to insure tight joints. (h) Add to § 72.5A-4 (a) the following: (4) Name, initials, or symbol of company or person for whose use the containers are being made. 8 (i) Serial number (immediately below the mark specified in (1)). (j) The test pressure prescribed in § 72.5A-5 (a) (2) must be increased to 125 pounds per square inch. (k) The test pressure prescribed in § 72.5A-5 (b) must be increased to 100 pounds per square inch.*+ [Pars. 1-10] **For statutory and source citations, see note to § 72.1A-1. Page 755 SHIPPING CONTAINER SPECIFICATION 5G STEEL BARRELS OR DRUMS 72.5G-1 Compliance with specification 5A; exceptions. (a) Containers must comply with all provisions of specification 5A except as follows: (b) In place of § 72.5A-2 (a) the following: The use of an austenitic 18- and 8-chrome nickel alloy steel with carbon content not over 0.12 percent is required, except for rolling hoops and chime reinforcements, in the manufacture of these containers. [As amended Jan. 7, 1938, 3 F.R. 132] (c) Restrictions in § 72.5A-3 (c) (3) do not apply. (d) In place of thicknesses of metal prescribed in § 72.5A-3 (f) (1), the thicknesses of metal must be not less than as prescribed in § 72.5-1 (c) of specification 5. (e) Distance of drop under § 72.5A-5 (a) (1) is 4 feet. (f) Pressure under § 72.5A-5 (a) (2) is 40 pounds.*t [Pars. 1-6, as added Oct. 14, 1932] SHIPPING CONTAINER SPECIFICATION 5H LEAD-LINED STEEL BARRELS OR DRUMS 72.5H-1 Compliance with specification 5A; exceptions. (a) Containers must comply with all provisions of specification 5A except as follows: (b) In place of § 72.5A-3 (c) (3), the following: Flanges for closures must be welded in place. (c) In place of § 72.5A-3 (d), the following: Containers with flanged head secured to body must have chime reinforcement adequate for protection. (d) In place of § 72.5A-3 (e), the following: Containers must be lined on the inside with lead of purity sufficient to resist corrosion and not less than 32-inch thick bonded to the steel. (e) In place of § 72.5A-3 (g) (2), (3), the following: Openings must be of screw-thread or flange-with-follower-plate type. [As amended Mar. 15, 1938, effective June 17, 1938, 3 F.R. 654] (f) Add to § 72.5A-3 (h) the following: Closures consisting of flange with follower plate must be close fitting with gaskets, as provided above.** [Pars. 1-6, as added Jan. 13, 1934] SHIPPING CONTAINER SPECIFICATION 5J STEEL BARRELS OR DRUMS: SINGLE-TRIP CONTAINER 72.5J-1 Compliance with specification 5A; exceptions. (a) Containers must comply with all provisions of specification 5A except as follows: (b) (1) Restrictions in §§ 72.5A-3 (c) (2), (3); 72.5A-3 (d); 72.5A-3 (g) (3), (4); 72.5A-3 (h) (3), (4) do not apply. [As amended Mar. 15, 1938, effective June 17, 1938, 3 F.R. 654] Page 756 **For statutory and source citations, see note to § 72.1A-1. (2) Three or more threads for flanges and for engagement of plug, or cap, therewith are authorized in place of five or more prescribed by § 72.5A-3 (h) (2). [As amended Mar. 15, 1938, effective June 17, 1938, 3 F.R. 654] (c) In place of table in § 72.5A-3 (f) (1) the following: 1 Rolled or swedged-in hoops. (d) Add to § 72.5A-4 (a) the following: (4) The markings STC in letters at least 3 inches high for containers of over 30-gallon capacity and at least 2 inches high for containers of 30-gallon capacity and less. This must be applied immediately below the ICC marks to indicate "single-trip container." (e) Distance of drop under § 72.5A-5 (a) (1) is reduced to 4 feet. (f) Pressure under § 72.5A-5 (a) (2) is reduced to 40 pounds. (g) Drums of 25-gallon or greater capacity must be made with heads convex (crowned), but not extending beyond the level of the chimes. The minimum convexity of heads must be five-eighths inch for drums of capacity 25 to 35 gallons, inclusive, and three-quarters inch for larger drums. (h) In place of § 72.5A-3 (h), the following is authorized: Threaded metal flanges and plugs, when used as closures, must have adequate gaskets, be tight fitting, and be constructed so that at least three full threads are engaged when plug is screwed home with gasket in place. Closures must be of metal with gaskets of suitable material; all parts closing the opening, except cap seal over threaded plug or cap, must be at least as thick as prescribed for head of container; Provided, That thinner metal closures are authorized for containers of not over 12 gallons capacity when constructed, or fitted with sealing device, so that closure cannot be removed without destroying it or the sealing device.* [Pars. 1-7, as added Mar. 12, 1936, 1 F.R. 48; par. 8, as added Aug. 27, 1936, 1 F.R. 1368, and Mar. 15, 1938, effective June 17, 1938, 3 F.R. 654] **For statutory and source citations, see note to § 72.1A-1. Page 757 |