missioners for Canada, may be transported from point of entry in the United States to their destination in the United States or through the United States en route to a point in Canada. NOTE 1: Because of the present emergency and until further order of the Commission, compressed gas cylinders 40 inches in length and 8 inches in diameter, charged with not more than 40 pounds of carbon dioxide or when charged with nitrogen not in excess of 2,000 pounds per square inch, and shipped by or to the Canadian Department of National Defense in accordance with Board of Transport Commissioners for Canada Order No. 76253 dated Mar. 10, 1951, may be shipped to destinations in the United States or through the United States to points in Canada. (b) Specification containers made and maintained in full compliance with corresponding specifications prescribed by the Board of Transport Commissioners for Canada in its Regulations for the Transportation of Explosives and Other Dangerous Articles by Freight, and Specifications for Shipping Containers, and marked in accordance therewith, BTC, CRC, etc., may be used for shipment of explosives and other dangerous articles offered for transportation by carriers by rail freight, rail express, highway, or water. [15 F. R. 8274, Dec. 2, 1950, as amended by Order 1, 16 F. R. 5322, June 6, 1951; Order 16, 19 F. R. 6267, Sept. 29, 1954] § 73.9 Import and export shipments. (a) Import shipments of explosives and other dangerous articles offered in the United States in original packages for transportation by carriers by rail freight, rail express, motor vehicle, or water must comply with all requirements of the regulations in Parts 71-78 of this chapter. Except for shipments from Canada conforming with § 73.8, the importer must furnish with the order to the foreign shipper, and also to the forwarding agent at the port of entry, full and complete information as to the packing, marking, labeling, and other requirements, as prescribed in Parts 71-78 of this chapter, and the forwarding agent must file with the initial carrier in the United States a properly certified shipping order or other shipping papers as prescribed in this part. Except for the requirements of §§ 77.817 and 77.823 of this chapter, the provisions of Parts 71-78 of this chapter do not apply to such transportation by motor vehicle or water as may be necessary to effect transfer of import shipments from place of discharge to other places within the same port area or delivery to a water carrier within the same port area (including contiguous harbors). Further transportation of such import shipments by connecting water carrier shall be subject to the regulations prescribed by the Commandant of the Coast Guard. (b) Shipments of explosives and other dangerous articles offered for transportation by common carrier by water from the United States, its insular possessions, or dependencies, destined to such insular possessions or territory, dependencies, or to a foreign country, must be packed, marked, labeled and described in accordance with the rules and regulations in force at destination ports or as prescribed in Parts 71-78 of this chapter. (c) Outside shipping containers for export shipments offered for transportation by carriers subject to Parts 71-78 of this chapter may have specification markings prescribed for containers plainly and legibly shown on labels or tags securely fastened thereto in lieu of marking requirements as prescribed for containers by Part 78 of this chapter. [15 F. R. 8274, Dec. 2, 1950, as amended by Order 25, 21 F. R. 3008, May 5, 1956; Order 28, 21 F. R. 9355, Nov. 30, 1956] § 73.10 Inefficient containers. (a) The results of experience gained by examination of broken or leaking containers must be recorded by the Bureau of Explosives to the end that further use of any particular kind of container shown by experience to be inefficient, may be prohibited by the Commission. § 73.11 Violations and accidents to be reported. (a) Consignees must report promptly to the Bureau of Explosives all instances of improper staying and broken, leaking, or defective containers of explosives or other dangerous articles in shipments received by them. (b) The Bureau of Explosives, upon receipt of reports from consignees, should promptly report to the shipper full particulars covering all such cases. SUBPART A-PREPARATION OF ARTICLES FOR TRANSPORTATION BY CARRIERS BY RAIL FREIGHT, RAIL EXPRESS, HIGHWAY, OR WATER § 73.21 Prohibited packing. (a) The offering of packages of dangerous articles in outside packages containing in the same compartment interior packages the mixture of contents of which would be liable to cause a dangerous evolution of heat or gas or produce corrosive materials is prohibited for transportation by common carriers by rail freight, rail express, highway, or water, except as specified in §§ 73.152 (a), 73.242 (a), (b) and 73.301 (a). (b) The offering for transportation of any package or container of any liquid, solid or gaseous material which under conditions incident to transportation may polymerize (combine or react with itself) or decompose so as to cause dangerous evolution of heat or gas is prohibited. Such materials may be offered for transportation when properly stabilized or inhibited. Refrigeration may be used as a means of stabilization only when approved by the Bureau of Explosives. (c) The offering for transportation of any package or container of any material which will cause a dangerous evolution of heat or gas under conditions normally incident to transportation is forbidden. [Order 9, 18 F. R. 801, Feb. 7, 1953, as amended by Order 17, 19 F. R. 8524, Dec. 14, 1954; Order 27, 21 F. R. 7597, Oct. 4, 1956] § 73.22 Specification containers prescribed. (a) Shipping containers, unless otherwise provided in this part (see § 73.9 (c)), used hereafter in shipping explosives or other dangerous articles, must have been made, assembled with all parts or fittings in their proper place, and marked in compliance with specifications prescribed in Part 78 of this chapter or with specifications of the Commission in effect at date of manufacture of container. (1) Because of the present emergency and until further order of the Commission, containers approved for emergency or experimental shipments may be authorized in the discretion of, and upon special permit to be issued by the Director or Acting Director, Bureau of Safety and Service, Washington, D. C. (b) Containers that do not comply with the specifications must not be marked to indicate such compliance. (c) Containers not specified in this part, made before the effective date of the regulations in Parts 71-78 of this chapter and authorized for use under the regulations effective October 1, 1930, (d) Metal barrels and drums manufactured previous to March 31, 1912, of not to exceed 55 gallons nominal capacity, and made of metal not lighter than 16 gauge, may be continued in service after each metal barrel or drum has been subjected to and has passed a hydrostatic interior pressure test of not less than 30 pounds per square inch for at least five minutes, without bulging either head beyond the chime and without leakage of liquid contents, and after each such metal barrel or drum passing the test has been plainly and permanently marked: Mfd. before 3-31-12 (Date) and with the date of the retest, by stamping into the metal or by means of a plate securely attached to the container. (e) Spec. 5G metal drums manufactured prior to May 12, 1954, may be continued in service until further order of the Commission. (f) Where the regulations require spec. 37A or 37B (§ 78.131 or § 78.132 of this chapter) metal drums, spec. 37D, 37E, 37F, 37G, and 37H metal drums manufactured prior to August 30, 1955, may be continued in use for commodities and gross weights for which they were previously authorized until further order of the Commission. [15 F. R. 8274, Dec. 2, 1950, as amended by Order 13, 19 F R. 1276, Mar. 6, 1954; Order 15, 19 F. R. 6068, Sept. 21, 1954; Order 18, 20 F. R. 949, Feb. 15, 1955; Order 26, 21 F. R. 4431, June 23, 1956; Order 28, 21 F. R. 9355, Nov. 30, 1956] (a) § 73.23 Closures for containers. Containers must be closed for shipment as prescribed in the specifications for the container unless otherwise authorized for the particular article being shipped. Gasketed closures must be fitted with gaskets of efficient material which will not be deteriorated by the contents of the container. § 73.24 Design of containers. (a) In addition to standing the tests prescribed, the design and construction of inside and outside containers must be such as to prevent the occurrence in individual packages of defects that permit leakage of their contents under ordinary conditions incident to transportation. (b) Articles for which detailed specifications for packing are not given in this part must be securely packed in containers strong enough to stand, without rupture or leakage of contents, all shocks ordinarily incident to handling during transit. [15 F. R. 8274, Dec. 2, 1950, as amended by Order 25, 21 F. R. 3008, May 5, 1956] § 73.25 Specification containers in outside containers. (a) Outside specification shipping containers containing no acids or corrosive liquids may be shipped when tightly packed in strong outside fiberboard boxes or drums, wooden boxes, barrels or crates, metal barrels or drums, or other enclosures. The outside shipping container must be marked with the prescribed name of contents and labeled as required. Packages required by the regulations in this part to be marked "This Side Up" or "This End Up" must be packed in the outside package with their filling holes up, and the outside package must be marked "THIS SIDE UP" or "THIS END UP". The outside container must also be marked "INSIDE PACKAGES COMPLY WITH PRESCRIBED SPECIFICATIONS" unless the specification markings on the inside packages are visible through openings in the outside package. (b) Outside specification shipping containers containing acids or other corrosive liquids, except nitric acid, perchloric acid, or hydrogen peroxide solution containing over 52 percent hydrogen peroxide by weight, may be shipped when tightly packed in strong outside fiberboard or wooden boxes, or in wooden crates, provided such outside container shall not contain any other article except under the following conditions: (1) As provided in §§ 73.242, 73.257, 73.258, 73.259, 73.260, 73.261, and 73.286. (2) Electrolyte acid or alkaline corrosive battery fluid in packages prescribed in §§ 73.257 and 73.258 may be included in outside shipping containers with dry charged storage batteries when packed to prevent movement within the outside containers. (3) The outside container shall be marked with the prescribed name of contents and labeled as required and shall be marked "This Side Up" or "This End Up." The outside container must also be marked "Inside Packages Comply With Prescribed Specifications" unless the specification markings on the inside packages are visible through openings in the outside package. [Order 17, 19 F. R. 8524, Dec. 14, 1954; Order 27, 21 F. R. 7597, Oct. 4, 1956] (a) § 73.26 Quantity limitations. When quantity limitations are specified in Parts 71-78 of this chapter by United States liquid measure or by avoirdupois weight it is authorized that quantities measured by the metric system may be substituted, up to but not exceeding 1 gallon for liquids and 10 pounds for solids, on the basis of 1 liter per quart specified and 500 grams per pound specified. (b) When quantity limitations do not appear in the packing requirements, the permitted gross weight or capacity authorized for a container to be offered for transportation by carrier by rail freight, rail express, highway, or water is shown in the container specification. (See also § 73.27.) § 73.27 Rail express limitations. (a) Dangerous articles other than explosives, except such as are not accepted for transportation, and except where special packing is prescribed in this part for rail express shipments, must, when offered for shipment by rail express, be packed, marked and labeled in compliance with this part. (b) The maximum quantity of any explosive or other dangerous article that may be offered for transportation by rail express in one outside container must not exceed that as shown in § 72.5 of this chapter. (c) When several dangerous articles are placed in one outside package without violating the regulations, the combined quantity of any one group must not exceed the lowest limit prescribed for any one of the articles of that group that is included. § 73.28 Reused containers. (a) Containers used more than once (refilled and reshipped after having been previously emptied) must be in such condition, including closing devices and cushioning materials, that they will protect their contents during transit as efficiently as new containers. Repairs must be made in an efficient manner and parts that are weak, broken, or otherwise deteriorated must be replaced (see paragraphs (e), (f), (g), and (h) of this section, for containers that cannot be reused). (1) Retest of carboy packages must have been made by or for shippers, or their authorized agents, as required by applicable provisions of the specifications in Part 78 of this chapter before carboys which are to be offered for transportation are filled. NOTE 1: Tests not required by shipper who fills and ships or who reships filled carboys for one shipment only carboy packages which have been properly tested by another shipper or a duly authorized agency. (b) Markings applied as prescribed by the specifications must be maintained in a legible condition. (c) If, on account of painting or any other reason, the markings as prescribed for any container cannot be kept plain and legible, a metal plate, brazed or soldered, or otherwise securely fastened to the container, with a reproduction of the prescribed markings plainly stamped thereon, will be permitted. (d) Containers previously used for the shipment of any explosive or other dangerous article must have the old markings, including name of contents, addresses, and labels, if any, thoroughly removed or obliterated before being used for the shipment of other articles. (e) Boxes previously used for high explosives containing a liquid explosive ingredient not contained in an inside metal container must not be again used for shipments of any character. (1) Boxes that have been contaminated by liquid explosive compositions must not again be used for shipments of any character. (f) Kegs previously used for any chlorate must not be again used for shipments of any character. (g) Metal kegs previously used for black powder not contained in an interior package must not be again used for shipment of any explosive. NOTE 1: Because of the present emergency and until further order of the Commission, metal kegs, previously used for the shipment of black powder not contained in an interior package, may be used provided the kegs are in good physical condition and are not liable to permit escape of contents during transportation. Empty kegs previously used for shipment of black powder must be entirely free of black powder on the inside and outside before being offered for transportation. (h) Single-trip containers made under specifications prescribed in Part 78 of this chapter from which contents have once been removed following use for shipment of any article, must not be again used as shipping containers for explosives, flammable liquids, flammable solids, oxidizing materials, corrosive liquids, or poisons, class B or C, as defined in this part: Provided, That during the present emergency and until further order of the Commission, single-trip containers may be reused if retested and approved for service by the Bureau of Explosives, Applications for permission for reuse should be made to the Bureau of Explosives, 30 Vesey Street, New York 7, N. Y. [15 F. R. 8274, Dec. 2, 1950, as amended by Order 10, 18 F. R. 3134, June 2, 1953; Order 18, 20 F. R. 949, Feb. 15, 1955] 873.29 Empty containers. (a) Empty cylinders, barrels, kegs, drums, or other containers except carboys (see paragraph (c) of this section) previously used for the shipment of any explosive or other dangerous article, as defined in this part, if authorized for reuse must have all openings including removable heads, filling and vent holes, tightly closed before being offered for transportation. Small quantities of the material with which containers were loaded may remain in "empty" containers and when the vapors remaining therein are unstable, it is permissible to add sufficient inert gas to render the vapors stable. (b) They may be loaded in open or stock cars when desired. Cars should not be placarded but lighted open-flame lanterns or other open-flame lights should be kept away. (c) Carboys previously used for the shipment of corrosive liquids when offered to carriers for transportation as "empty" carboys, must have been thoroughly (completely) drained. Whenever practicable they should not be loaded with valuable or perishable freight. (d) Empty bottles other than carboys previously used for the shipment of acids or other corrosive liquids must be securely stoppered. (e) All containers and accessories which have been used for shipments of radioactive materials when shipped as empty must be sufficiently free of radioactive contamination so as to conform to the conditions of § 73.392 (a) (1), (2), and (3). (f) Containers shipped as "empty" must have the old labels prescribed by this part removed, obliterated, destroyed, or completely covered by a square white label as described in § 73.413, measuring not less than six inches on each side, and bearing thereon the word "EMPTY" in letters not less than one-inch high. This does not apply to carload or truckload shipments to be unloaded by consignee. [15 F. R. 8274, Dec. 2, 1950, as amended by Order 8, 17 F. R. 9835, Nov. 1, 1952] 873.30 Loading and placarding of cars by shippers and unloading of cars by consignees. (a) When shipments of explosives or other dangerous articles are loaded into cars by shippers, or unloaded from cars by the consignee or his duly authorized agent, the applicable provisions of Part 74 of this chapter must be complied with. See 874.538 of this chapter for loading and storage chart. [Order 10, 18 F. R. 3134, June 2, 1953] § 73.31 Qualification, maintenance, and use of tank cars. (a) Tanks mounted on or forming part of a car and built in compliance with the American Railway Association's specifications for tank cars prior to July 1, 1927; or built in compliance with the Commission's specifications for tanks of tank cars in force prior to the effective date of Parts 71-78 of this chapter, including tanks already constructed or under construction on the effective date hereof in compliance with trial specifications for fusion-welded tanks of tank cars are authorized for service, until further order of the Commission, as follows: inch. 2 Tanks and their appurtenances must have been originally designed or subsequently reconstructed for the transportation of acids. Safety valves on these cars must be set to open at a pressure not exceeding 225 pounds per square inch. 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 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 Tanks authorized under I. C. C. Special Orders of Nov. 5, 1937, and Nov. 14, 1939, may be continued in service as provided by order and revision thereof. 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 of materials and equipped with fittings complying with these specifications must be restenciled to indicate proper classification. (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 appli |