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(b) The term "ceiled" applied to a barge constructed of wood means the hold space is fitted with a tight plank floor and that tight planking or wooden cargo battens are carried up the sides of the hold to provide a smooth floor and reasonably smooth sides without unnecessary projections. Floor or siding fitted "tight" shall have removable sections for purposes of clean-out and access for inspection of hull. When cargo battens are fitted at sides the floor shall be carried out to the skin of the barge and fitted reasonably tight around the frames.

(c) When applied to a barge constructed of steel, the term "ceiled" means the construction shall be such as to provide a reasonably flush floor or tank top and sides, free from unnecessary projections within the cargo space. Tight wooden flooring and ceiling or battens may be fitted in the cargo spaces of steel barges in lieu of steel platings.

§ 146.10-4 Carfloats and barges used as carfloats.

Explosives or other dangerous articles or substances laden in railway or highway vehicles in compliance with the provisions of the Interstate Commerce Commission regulations governing such transportation may be carried or conveyed on board carfloats and barges used as carfloats subject to the following conditions:

(a) Carfloats and barges used as carfloats shall not be utilized to transport, carry, convey or store vehicles laden with any explosive expressly prohibited by subsection 3 of R.S. 4472, as amended.

(b) Carfloats and barges used as carfloats shall not be utilized to transport, carry, convey or store vehicles laden with any permitted explosive or other dangerous article or substance unless in compliance with the provisions of the regulations in this part with respect to "Barges".

(c) Dangerous cargo laden in vehicles being transported on carfloats and barges used as carfloats is not subject to any other provision of the regulations in this part unless the packages, or the sub`stances if in bulk, are removed from the vehicle for any reason other than transfer of the article or substance from the vehicle to a vessel.

(d) Transfer of explosives from vehicles on board carfloats and barges used as carfloats to vessels shall be governed by the permit requirements of §§ 146.2085,, 146.20-87.

[CGFR 57-33, 22 F.R. 8571, Oct. 29, 1957, as amended by CGFR 59-46, 24 F.R. 9391, Nov. 21, 1959]

§ 146.10-5 On deck protection.

Wooden barrels, wooden or fiberboard boxes, fiber drums, plywood drums containing explosives, inflammable liquids, inflammable solids or oxidizing materials or poisons that are stowed "On deck in open” on barges shall be protected by tarpaulins. The following hazardous articles, burlap bags, camphene, calcium carbide, bleaching powder, cork, cotton, cotton and textile waste, excelsior, fibers, hay, naphthalene, oakum, wood shavings shall when stowed "On deck in open" on barges be protected by tarpaulins.

§ 146.10-6 Stowage of explosives.

(a) Barges having cargoes of permitted explosives and other dangerous articles are required to observe the provisions of the stowage and storage chart of explosives and other dangerous articles in § 146.10-50.

(b) Explosives required by the regulations in this part to be stowed in magazines shall when on board barges as cargo be stowed either in a house or "Under deck" as permitted for the particular type of barge by the provisions of table shown in § 146.10-50.

[Order 74, 6 F.R. 280, Jan. 11, 1941, as amended, 9 F.R. 14343, Dec. 6, 1944]

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There is indicated in this table the explosives or other dangerous articles or substances, separated according to barges. Unless otherwise stated in the table, a permitted stowage applies to substances when in containers only. substances which are loaded and carried without benefit of containers or wrappers, and received and delivered by

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1 Outside containers vulnerable to damage by water shall not be given this stowage.
Outside containers vulnerable to damage by water shall be stowed under deck only.
Outside containers vulnerable to damage by water shall be stowed under cover only.
Substances affected by water shall not be given this stowage.
Substances affected by water shall be stowed under deck only.
Substances affected by water shall be stowed under cover only.
'Stowage shall be "on deck in house" only.

Subpart-Detailed Regulations
Governing Explosives

SOURCE: §§ 146.20-1 to 146.20-300 contained in CGFR 52-8, 17 F.R. 6464, July 17, 1952; CGFR 52-62, 17 F.R. 11881, Dec. 31, 1952, except as otherwise noted.

§ 146.20-1 An explosive.

For the purpose of the regulations in this subchapter an explosive is defined as any chemical compound, mixture, or device, the primary or common purpose of which is to function by explosion, i.e., with substantially instantaneous release of gas and heat, unless such compound, mixture, or device is otherwise specifically classified in the regulations in this part.

[CGFR 52-8, 17 F.R. 6464, July 17, 1952, as amended by CGFR 53-26, 18 F.R. 5216, Sept. 1, 1953]

§ 146.20-3 Prohibited or not permitted explosives.

The offering of the following explosives for transportation, carriage, conveyance, storage, stowage, or use on board vessels is forbidden:

(a) Fulminates or other detonating compounds in bulk in dry condition.

(b) Explosive compositions that ignite spontaneously or undergo marked de

composition when subjected for 48 con-
secutive hours to a temperature of 75° C.
(167° F.).

(c) Explosives containing an am-
monium salt and a chlorate.

(d) Liquid nitroglycerin, diethylene glycol dinitrate, or other liquid explosives not authorized by the Commandant of the Coast Guard.

(e) Explosives condemned by the Interstate Commerce Commission (except properly packed samples for laboratory examinations). Appeal may be made to the Interstate Commerce Commission from such condemnations.

(f) Leaking or damaged packages of explosives.

(g) Condemned or leaking dynamite shall not be repacked and offered for shipment unless written authority is granted by the Interstate Commerce Commission and the repacking is done by a competent person in the presence of an inspector designated by the Interstate Commerce Commission.

(h) Firecrackers, flash crackers or salutes, the explosive content of which exceeds 12 grains each in weight, or pest control bombs, the explosive content of which exceeds 18 grains each in weight.

dangerous articles or substances on board barges.

their classification, that are permitted or restricted in their transportation and stowage on board the various class When such substances are permitted "in bulk" a notation to that effect appears in the table. ("In Bulk" means the vessel without mark or count.)

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No.....

Yes 14. Yes... No..... No......

No. No.

No, except Yes 14... Yes... Yes.... Yes, except No..... Yes.
bulk in
liquids.

tanks.

'Transportation of inflammable or combustible liquids, in bulk, is governed by rules and regulations for tank

vessels.

NOTE: Containers of dangerous articles vulnerable to damage by water or dangerous substances affected by water when loaded in weatherproof railroad vehicles in accordance with requirements of the Interstate Commerce Commission regulations are exempt from the provisions of stowage restrictions shown in this table and numbered (1) to (7), inclusive.

(1) Fireworks that combine an explosive and a detonator or blasting cap. (j) Fireworks containing an ammonium salt and a chlorate.

(k) Fireworks containing yellow or white phosphorus.

(1) Fireworks or fireworks compositions that ignite spontaneously or undergo marked decomposition when subjected for 48 consecutive hours to a temperature of 75° C. (167° F.).

(m) Fireworks condemned by the Interstate Commerce Commission except properly repacked samples for laboratory examinations.

(n) Toy torpedoes, the maximum outside dimension of which exceeds % inch, or toy torpedoes containing a mixture of potassium chlorate, black antimony and sulfur with an average weight of explosive composition in each torpedo exceeding 4 grains.

(o) Toy torpedoes containing a cap composed of a mixture of red phosphorus and potassium chlorate exceeding an average of one-half (0.5) grain per cap.

(p) Fireworks containing copper sulfate and a chlorate.

(q) New explosives except samples for laboratory examination and military ex

plosives approved by the Chief of Ordnance, Department of the Army; Chief, Bureau of Ordnance, Department of the Navy, or Air Material Command, Department of the Air Force. All other new explosives must be approved for transportation by the Interstate Commerce Commission.

(r) Loaded firearms.

[CGFR 52-8, 17 F.R. 6464, July 17, 1952, as amended by CGFR 54-16, 19 F.R. 4929, Aug. 6, 1954; CGFR 56-29, 21 F.R. 7055, Sept. 20, 1956; CGFR 58-48, 23 F.R. 9635, Dec. 12, 1958] § 146.20-5 Acceptable explosives.

(a) Acceptable explosives are divided by the Interstate Commerce Commission regulations into three classes according to degree of hazard in transportation, as follows:

Class A explosives, detonating or otherwise of maximum hazard.

Class B explosives, inflammable hazard.
Class C explosives, minimum hazard.

(b) Acceptable explosives are defined by the Interstate Commerce Commission regulations as set forth in this subpart, and such definitions are binding upon all shippers making shipments of any explosives by common carrier vessels engaged in interstate or foreign commerce by

water. Such definitions are accepted and adopted and form part of the regulations in this subchapter applying to all shippers making shipments of explosives by any vessel and shall apply to the owners, charterers, agents, masters or persons in charge of vessels and to other persons transporting, carrying, conveying, storing, stowing or using explosives on board any vessel.

§ 146.20-7 Class A explosives.

Class A explosives are defined as:

(a) Type 1. Solid explosives which can be caused to deflagrate by contact with sparks or flame such as produced by safety fuse or an electric squib, but cannot be detonated by means of a No. 8 test blasting cap.' Examples: Black powder and low explosives.

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1 The detonation test is performed by placing the sample in an open-end fiber tube which is set on the end of a lead block approximately 11⁄2 inches in diameter and 4 inches high which, in turn, is placed on a solid base. A steel plate may be placed between the fiber tube and the lead block.

A No. 8 test blasting cap is one containing 2 grams of a mixture of 80 percent mercury fulminate and 20 percent potassium chlorate, or a cap of equivalent strength.

"Unconfined" as used in this section does not exclude the use of a paper or soft fiber tube wrapping to facilitate tests.

The Bureau of Explosives impact apparatus is a testing device designed so that a guided 8-pound weight may be dropped from predetermined heights so as to impact specific quantities of liquid or solid materials under fixed conditions. Detailed prints may be obtained from the Bureau of Explosives, 63 Vesey Street, New York 7, N. Y.

cent of the trials under a drop of less than 4 inches. Examples: Commercial dynamite containing no liquid explosive ingredient, trinitrotoluene, amatol, tetryl, picric acid, urea nitrate, pentolite and commercial boosters.

(d) Type 4. Solid explosives which can be caused to detonate, when unconfined, by contact with sparks or flame such as produced by safety fuse or an electric squib; or which can be exploded in the Bureau of Explosives' Impact Apparatus' in more than 50 percent of the trials under a drop of less than 4 inches. Examples: Initiating and priming explosives, lead azide, fulminate of mercury, etc.

(e) Type 5. Desensitized liquid explosives are explosives which may be detonated separately, or when absorbed in sterile absorbent cotton, by a No. 8 test blasting cap;' but which cannot be exploded in the Bureau of Explosives' Impact Apparatus by a drop of less than 10 inches. The desensitizer must not be significantly more volatile than nitroglycerin and the desensitized explosive must not freeze at temperatures above minus 10° F. Example: Desensitized nitroglycerin.

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(f) Type 6. Liquid explosives that can be exploded in the Bureau of Explosives' Impact Apparatus under a drop of less than 10 inches. Example: Nitroglycerin. See "Prohibited or not permitted explosives" in § 146.20-3.

(g) Type 7. (1) Blasting caps' are small tubes, usually made of an alloy of either copper or aluminum, or of molded plastic, closed at one end and loaded with a charge of initiating or priming explosives, Class A-Type 4, either with or without other suitable explosives. The total weight of explosives per unit shall not exceed 150 grains. Blasting caps which have been provided with a means for firing by an electric current, and sealed, are known as electric blasting caps.

(2) Detonating primers are devices for commercial use which contain a detonator and an additional charge of explosives, all assembled in a suitable envelope.

(3) Detonating fuzes, class A explosives, are used in the military service to detonate the high explosive bursting

Blasting caps, blasting caps with safety fuse, or electric blasting caps in quantities of 1,000 or less are classified as Class C explosives.

charges of projectiles, mines, bombs, torpedoes, and grenades. In addition to a powerful detonator, they may contain several ounces of a high explosive, such as tetryl or dry nitrocellulose, all assembled in a heavy steel envelope. They may also contain a small amount of radioactive component. Those that are so made and packed that they will not cause functioning of other fuzes, explosives, or explosive devices in the same or adjacent containers are classed as class C explosives.

(h) Type 8. (1) Any solid or liquid compound, mixture or device which is not specifically included in any of the above types, and which under special conditions may be so designated and approved by the Bureau of Explosives. Example: Shaped charge, commercial.

(2) A shaped charge, commercial, consists of a plastic, paper, or other suitable container comprising a charge of not to exceed 8 ounces of a high explosive containing no liquid explosive ingredient and with a hollowed-out portion (cavity) lined with a rigid material. Detonaters or other initiating elements shall not be assembled in the device.

(i) Ammunition for cannon. Ammunition for cannon is fixed, semifixed, or separate loading ammunition which is fired from a cannon, mortar, gun, howitzer or recoilless rifle.

with

cannon

(j) Ammunition for cannon projectiles. Ammunition for with explosive projectiles, gas projectiles, smoke projectiles, incendiary projectiles, illuminating projectiles, or shell, is fixed ammunition assembled in a unit consisting of the cartridge case containing the propelling charge and primer, and the projectiles, or shell, fuzed or unfuzed. Detonating fuzes, tracer fuzes, explosive or ignition devices, or fuze parts with explosives contained therein must not be assembled in ammunition or included in the same outside package unless shipped by, for, or to the Departments of the Army, Navy, or Air Force of the United States Government or unless of a type approved by the Bureau of Explosives.

(k) Explosive projectiles. Explosive projectiles are shells, projectiles, guided missiles with war heads, war heads, or rocket heads, loaded with explosives or bursting charges, with or without other materials, for use in cannons, guns, tubes, mortars or other firing or launching devices.

(1) Grenades. Grenades, hand or rifle, are small metal or other containers designed to be thrown by hand or projected from a rifle. They are filled with an explosive or a liquid, gas, or solid material such as a toxic or tear gas or an incendiary or smoke producing material and a bursting charge. When shipped without explosives or bursting charges, see "Chemical ammunition, class A or B poisons", as set forth in §§ 146.25-100 and 146.25-200. For tear gas grenades see § 146.25-300.

(m) Explosive bombs. Explosive bombs are metal or other containers filled with explosives. They are used in warfare and include aeroplane bombs and depth bombs.

(n) Explosive mines. Explosive mines are metal or composition containers filled with a high explosive.

(0) Explosive torpedoes. Explosive torpedoes, such as are used in warfare, are metal devices containing a means of propulsion and a quantity of high explosives.

(p) Rocket ammunition. Rocket ammunition is fixed ammunition which is fired from a tube, launcher, rails, trough, or other device as distinguished from cannon ammunition which is fired from a cannon, gun, or mortar. It consists of an igniter and propelling charge, commonly described as a motor, and explosive projectile, gas projectile, smoke projectile, incendiary projectile, or illuminating projectile, fuzed or unfuzed.

(q) Ammunition for small arms with explosive bullets or explosive projectiles. Ammunition for small arms with explosive bullets or ammunition for small arms with explosive projectiles is fixed ammunition to be used in machine guns or similar fire arms and consists of a metallic cartridge case, the primer and the propelling charge, with explosive bullet or explosive projectile with or without detonating fuze, the component parts necessary for one firing being all in one assembly. Detonating fuzes, tracer fuzes, explosive or ignition devices or fuze parts with explosives contained therein must not be assembled in ammunition or included in the same outside package unless shipped by, for, or to the Departments of the Army, Navy, or Air Force of the United States Government or unless of a type approved by the Bureau of Explosives.

(r) Chemical ammunition. Chemical ammunition used in warfare is all

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