pacity plus 2 percent plus 1 quart, except that for containers over 30 gallons marked capacity actual capacity shall be not less than rated capacity plus 2 percent, nor greater than rated capacity plus 2 percent plus 2 quarts; actual capacity of bilge-type containers must be not less than rated capacity nor greater than rated capacity plus 2 percent plus 2 quarts. [Order 6, 17 F. R. 7284, Aug. 9, 1952] § 78.81-3 Composition. (a) Sheets for body and heads to be low carbon, open hearth or electric steel. Minimum thickness, uncoated sheets (gauge) 1 Rolling hoops of pliable solid rubber or other suitable material are also authorized when approved as to type and construction by the Bureau of Explosives. which cannot be removed without destroying the cap or sealing device. (b) Closing part (plug, cap, plate, etc., see Note 1) must be of metal as thick as prescribed for head of container; this not required for containers of 12 gallons or less when the opening to be closed is not over 2.3 inches in diameter. NOTE 1: This does not apply to cap seal over a closure which complies with all requirements. (c) For closure with threaded plug or cap, the seat (flange, etc.) for plug or cap must have 5 or more complete threads; 2 drainage holes of not over 5/16" diameter are allowed in that section of flange which extends inside the drum. Plug or cap must have sufficient length of thread to engage 5 threads when securely tightened with gasket in place. (d) Openings over 2.3" diameter not permitted. Threads for plug or cap must be 8 or less per inch when over 4" standard pipe size. Flanges with inside threads and plugs must conform with the thread diameter and thread form shown in the following drawing; other details shown on the drawing are recommended. (e) Other threaded closures may be authorized by the Bureau of Explosives upon demonstration of equal efficiency. [Order 16, 19 F.R. 6270, Sept. 29, 1954, as amended by Order 54, 27 F.R. 3430, Apr. 11, 1962; Order 55, 27 F.R. 6741, July 17, 1962] § 78.81-10 Defective containers. (a) Leaks and other defects to be repaired by method used in constructing container, not by soldering. § 78.81-11 Marking. (a) Marking on each container by embossing on head with raised marks, or by embossing or die stamping on footring on drums equipped with footrings, or on metal plates securely attached to drum by brazing or welding not less than 20 percent of the perimeter as follows: (1) ICC-5A. In addition, when the container is of stainless steel, the type of steel used in body and head sheets as identified by American Iron and Steel Institute type number, and also the letters HT following steel designation on containers subjected to stress relieving or heat treatment during manufacture (for example, ICC-5A-304 or ICC-5A304 HT as applicable), shall be shown. These marks shall be understood to certify that the container complies with all specification requirements. (2) Name or symbol (letters) of maker; this must be recorded with the Bureau of Explosives. (3) Gauge of metal in thinnest part, rated capacity in gallons, and year of manufacture (for example, 14-55-50). When gauge of metal in body differs from that in head, both must be indicated with slanting line between and with gauge of body indicated first (for example 14/12-55-50 for body 14 gauge and head 12 gauge). [15 F. R. 8372, Dec. 2, 1950, as amended by Order 10, 18 F. R. 3142, June 2, 1953; Order 20, 20 F. R. 8106, Oct. 28, 1955] § 78.81-12 Size of markings. (a) Size of markings (minimum): 1⁄2” high for 33-gallon or less, 3/4" for over 33 and not over 55 gallons, and 1'' for over 55 gallons. § 78.81-13 Type tests. (a) Samples taken at random and closed as for use, shall withstand prescribed tests without leakage. Tests to be made of each type and size by each company starting production and to be repeated every four months. Samples last tested to be retained until further tests are made. The type tests are as follows: (1) Test by dropping, filled with water to 98 percent capacity, from height of 6 feet onto solid concrete so as to strike diagonally on chime, or when without chime seam, to strike on other circumferential seam; also additional drop test on any other parts which might be considered weaker than the chime. Closing devices and other parts projecting beyond chime or rolling hoops must also be capable of withstanding this test. (2) Hydrostatic pressure test of 80 pounds per square inch sustained for 5 minutes. § 78.81-14 Leakage test. (a) Each container shall be tested, with seams under water or covered with soapsuds or heavy oil, by interior air pressure of at least 15 pounds per square inch. Equally efficient means of testing are authorized upon demonstration and proof of satisfactory tests to representative of Bureau of Explosives. Leakers shall be rejected or repaired and retested. (a) Required in all details. § 78.82-2 Rated capacity. (a) Rated capacity as marked, see § 78.82-11(a)(3). Minimum actual capacity of containers shall be not less than rated (marked) capacity plus 4 percent. Maximum actual capacity shall not be greater than rated (marked) capacity plus 5 percent or rated (marked) capacity plus 4 percent plus 1 quart whichever is the greater. Actual capacity of bilge type containers must be not less than rated (marked) capacity, nor greater than rated (marked) capacity plus 2 percent plus 2 quarts. [Order 16, 19 F. R. 6271, Sept. 29, 1954] § 78.82-3 Composition. (a) Sheets for body and heads to be low carbon, open hearth or electric steel. § 78.82-5 Seams. (a) Body seams welded. § 78.82-6 Chime reinforcement. (a) Containers over 25 gallons capacity, with flanged head secured to body, to have chime reinforcement adequate for its protection. Rolling hoops of pliable solid rubber or other suitable material are also authorized when approved as to type and construction by the Bureau of Explosives. Rolled or swedged in hoops. Each removable head drum body must have three rolled or swedged in hoops with the center-line of one not more than 3 inches from the top curl. Head sheet may have holes of suitable size to provide for protruding closures when drum is used as overpack for inside container. spec 28, 2SL, 2T, 2TL. (§§ 78.35, 78.358, 78.21 or 78.27). Drum not over 16 gallons capacity may have lug type closure for removable heads. When drum is used in conjunction with inside plastic containers as prescribed by Part 73 of this chapter two 1⁄4 inch holes are permitted diametrically opposite each other in the drum body immediately above the double seam of the bottom chime and three holes not exceeding 16 inch in diameter on centers 120 degrees apart in the bottom head. When drun is used in conjunction with inside plastic container as prescribed by Part 73 of this chapter, drum interior shall be free of projections, burrs, or any edges that will cause damage to inside plastic containers and shall be free of lubricants, oils, or any foreign matter. Thickness shall be measured at any point on the sheet not less than 3% inch from an edge. [Order 29, 22 F.R. 2232, Apr. 4, 1957, and Order 30, 22 F.R. 3928, June 5, 1957, as amended by Order 44, 25 F.R. 10402, Oct. 29, 1960; Order 48, 26 F.R. 4998, June 6, 1961] § 78.82-8 Rolling hoops. (a) Separate hoops to have tight fit on shell and be firmly secured in place. Beading under rolling hoops or spot welding not permitted. § 78.82-9 Closures. (a) Adequate to prevent leakage; gaskets required. (b) Closing part (plug, cap, plate, etc., see Note 1) must be of metal as thick as prescribed for head of container; this not required for containers of 12 gallons or less when the opening to be closed is not over 2.7 inches in diameter. If unthreaded cap is used it must be provided with outside sealing devices which cannot be removed without destroying the cap or sealing device. NOTE 1: This does not apply to cap seal over a closure which complies with all requirements. (c) For closure with threaded plug or cap, the seat (flange, etc.) for plug, or cap, must have 3 or more complete threads; two drainage holes of not over 16" diameter are allowed. Plug, or cap, must have sufficient length of thread to engage 3 threads when screwed home with gasket in place. Threaded bung closures consisting of any type other than welded flanges and plugs, must be of a type approved by the Bureau of Explosives for use, after submission of proof as to efficiency. (d) Full removable head drums over 5 gallons capacity must be closed by means of 12 gauge bolted ring with drop forged lugs, one of which is threaded, and having % inch bolt and nut for drums not over 30 gallons capacity and % inch bolt and nut for drums over 30 gallons capacity. Five gallon drums must be of lug type closure with cover having at least 16 lugs. Equally efficient types of closures are authorized upon demonstration |