The term "STC" means "single trip container" that must not be reused for shipment of dangerous articles unless approved by the Interstate Commerce Commission. The term "NRC" means "nonreusable container" that must not be reused for shipment of dangerous articles.

[CGFR 58–9, 23 F.R. 4839, June 28, 1958] § 146.03-32 Storage.

The term "storage" as used in the regulations in this part means the placing of explosives or other dangerous articles or substances on board a vessel for purposes of safekeeping or accumulation, pending removal therefrom in whole or in part at a subsequent time; the process of "placing on board" and "removing therefrom" occurring without movement of the vessel being involved.

For the purposes of the regulations in this subchapter the term "stowage" embraces the art of placing and securing goods on board a vessel within the holds of the vessel, or on the decks, in such manner as to enhance safety during the period of transportation.

§ 146.03-34 Stowage terms defined.

For the purposes of the regulations in this part the following stowage terms are defined:

(a) "On deck in open" means the articles may be stowed on the open weather deck of a vessel. Such cargo may be protected from the elements if necessary or advisable.

(b) "On deck protected" means the articles may be stowed on the open weather deck of a vessel. It is required that dangerous cargo stowed under such conditions shall be protected from the elements by structural erections or from the direct rays of the sun by means of awnings or dunnaging.

(c) "On deck under cover" means the articles may be stowed on the weather

deck of a vessel under covered erections, such as forecastle, bridge house, poop, and deck houses, having permanent structural openings to the atmosphere, but no structural openings such as doors, hatches, companionways, or manholes to any living quarters, cargo carrying, or other compartments, unless such doors, hatches, companionways, or manholes are provided with hinged means for closing off and securing such openings. Stowage shall not be utilized in any deck house containing living quarters, a steering engine or refrigerating unit or refrigerated stowage boxes unless the areas occupied by such units are isolated from the stowage area by permanent and tight metallic division bulkheads.

(d) "Cargo hatch trunkway” means the articles may be stowed in a cargo hatch trunkway provided the trunk is constructed of steel without openings except such openings as are fitted with positive closing means, provided further, that noncombustible hatch closing means, or combustible hatch covers metal lined all over, are fitted at the lower terminus of the trunk securely closing off the cargo hold from the trunkway. A cargo hatch trunkway the upper terminus of which is located in a tween deck space shall not be utilized for such stowage unless fitted with steel hatch covers and then only when such terminus is always visible and accessible during the voyage.

(e) "Tween decks readily accessible" means the articles may be stowed in upper cargo spaces below or off the weather deck, and so stowed as to be readily accessible from the cargo openings (but not in the square of the hatch if the latter is made up of wooden hatch covers) or in a shelter deck directly inboard of structural openings from the weather deck. A vessel having cargo carrying holds which extend from the tank top or lower flat to the weather deck and having no enclosed cargo stowage space imposed above such single holds may substitute "Under deck away from heat" in lieu of "Tween decks readily accessible" stowage.

(f) "Tween decks" means the articles may be stowed in an upper cargo space below or off the weather deck, or in a shelter deck space. Any openings in the bulkheads forming boundaries of such tween deck spaces shall be fitted with positive closing means. Hatches shall be provided with a full complement of covers. After stowage of cargo all openings

shall be closed and remain closed during the voyage, except for such ingress and egress as is necessary in the operation of the vessel.

(g) "Under deck away from heat" means the articles may be stowed in a cargo space in a deep hold or a tween deck hold capable of being ventilated and not subject to heat from any artificial source. Holds of which any boundary bulkhead or deck forms part of the boundary of a boiler room, engine room, coal bunker, or galley shall not be utilized for this type of stowage unless the dangerous substances are stowed not less than twenty (20) feet away from such bulkheads: provided, however, that this limitation shall not apply to cargo spaces in holds adjacent to the engine room of vessels fitted with internal combustion engines.

NOTE: Order 146, Sept. 10, 1941, 6 F.R. 4668, provides in part as follows: Any vessel having a wooden bulkhead constructed at least eight (8) inches off a boiler room, engine room, coal bunker or galley bulkhead, when one of these bulkheads forms a boundary of a cargo carrying compartment, and transporting a substantially full cargo of sisal or other vegetable fibers (except cotton), and such portion of the sisal or other vegetable fibers cargo (except cotton) as is stowed "Tween decks" or "Under deck away from heat" are exempt from that provision of § 146.08-34(g) of the regulations of the Commandant of the U.S. Coast Guard governing the transportation of explosives or other dangerous articles on board vessels which requires that such substances be stowed at least 20 feet away from boiler room, engine room, coal bunker or galley bulkhead.

All other provisions of the regulations applying to sisal or other vegetable fibers (except cotton) and all other applicable provisions of the general and detail regulations shall be observed.

(h) "Under deck" means that the articles may be stowed in a cargo space in a deep hold or a tween deck hold capable of being ventilated. A hold is defined as an area allotted entirely to the carriage of cargo and is bounded by permanent steel bulkheads and decks, and the shell of the vessel, the deck openings being provided with means for effectively closing the hold against the weather, and in the case of superimposed holds, effectively closing off each hold. A cargo space or hold coming within the above definition shall not be used for the stowage of explosives (except fireworks or relatively safeClass C-explosives) unless closed off to traffic while the vessel is on its voyage. A cargo space or hold containing a crew

passage formed by battens or by a mesh or wire screen bulkhead shall not be used for stowage of other dangerous articles or substances, including fireworks and relatively safe explosives-Class C, unless watchman service is provided for such

areas.

(i) [Reserved]

(j) "Under deck but not overstowed" means the articles may be stowed in a cargo space in any hold as defined under paragraph (h) of this section, the characteristics of dangerous articles so stowed being such as to prevent the stowage of any other type of cargo over

same.

(k) "Ferry stowage (AA)" means that a highway vehicle loaded with any permitted explosives or other dangerous ar→ ticles or substances, or combustible liquids in conformity with all the applicable provisions of these regulations, may be transported on board a ferry vessel when stowed as directed by the vessel's representative. The vehicle need not be in a position to jettison but should be stowed as to be easily accessible.

(1) "Ferry stowage (BB)" means that a railroad vehicle loaded with any permitted explosives or other dangerous articles or substances or combustible liquids in conformity with all the applicable provisions of the regulations in this part, may be transported on board a railroad car ferry when stowed in a location away from sources of artificial heat. The vehicle need not be in position to jettison but should be easily accessible. Railroad car ferries accepting highway vehicles loaded with any permitted dangerous substances indicated as utilizing "Ferry stowage (AA)" shall stow such vehicle away from sources of artificial heat and easily accessible.

§ 146.03-35 Vapor density.

The term "vapor density” is the relative density of the vapor given off by an inflammable liquid as compared with air. A figure less than one (1) indicates a vapor lighter than air and a figure greater than one (1) indicates a vapor heavier than air.

§ 146.03-36 Vessels defined.

For the purposes of the regulations in this subchapter passenger carrying vessels or passenger vessels, barges and cargo vessels are defined as follows:

(a) Passenger carrying vessels or passenger vessels. (1) A passenger carrying vessel or a passenger vessel is any vessel which carries passengers: Provided, That

no vessel of the following classes shall be considered a passenger carrying vessel or a passenger vessel:

(1) Any vessel subject to any of the provisions of the International Convention for the Safety of Life at Sea, 1960, which neither carries nor is authorized to carry more than 12 passengers.

(11) Any cargo vessel documented under the laws of the United States and not subject to that Convention which neither carries nor is authorized to carry more than 16 persons in addition to the crew.

(iii) Any cargo vessel of any foreign nation that extends reciprocal privileges and not subject to that Convention which neither carries nor is authorized to carry more than 16 persons in addition to the crew.

(2) Any passenger vessel that is not designed and built to receive railroad vehicles shall be considered a passenger ferry if it is engaged in a ferry operation.

(3) Any passenger vessel that is designed and built to receive railroad vehicles shall be considered a railroad car ferry.

(b) Barge. Any non self-propelled vessel having no passengers on board, shall be considered a barge.

(c) Cargo vessel. (1) Any vessel other than a passenger vessel or a barge shall be considered a cargo vessel.

(2) Any passenger ferry or railroad car ferry during any period it is being operated under authority of a change of character certificate issued by an Officer in Charge, Marine Inspection.

[Order 74, 6 F.R. 259, Jan. 11, 1941, as amended by CGFR 50-16, 15 F.R. 4503, July 15, 1950; CGFR 66-28, 31 F.R. 8297, June 14, 1966]

§ 146.03-37 Volatility.

The term "volatility" is used to indicate the tendency of a liquid to assume the vapor state. The tendency of a liquid to evaporate is influenced by other factors than the vapor pressure. Increased volatility will result from the influence of a rise in temperature.

§ 146.03-40 Transport vehicle.

"Transport vehicle" means the conveyance used for the transportation of explosives or other dangerous articles and includes any motor vehicle, rail car, or aircraft. Each cargo-carrying body (trailer, van, box car, etc.) is a separate vehicle.

[CGFR 68-142, 34 F.R. 2086, Feb. 12, 1969] Subpart 146.04-List of Explosives or

Other Dangerous Articles Containing the Shipping Name or Description of Articles Subject to the Regulations in this Subchapter

SOURCE: The provisions of this Subpart 146.04 contained in Order 74, 6 F.R. 261, Jan. 11, 1941, unless otherwise noted.

§ 146.04-1 Proper shipping name.

The proper shipping name which shall be used and shown on bill of lading or other shipping paper and on outside of shipping containers where required by the regulations in this subchapter, appears in this list in roman type (not italics).

§ 146.04-2 Dangerous articles not named.

Any article not properly described by a name shown in this commodity list when such article classifies under the definitions contained herein as a dangerous article shall be prepared and offered for shipment in compliance with the regulations in this part. § 146.04-3 Classification.

This list shows the classification of each permitted article or substance. It also shows the articles or substances that are prohibited by the provisions of R. S. 4472, as amended, or that are not permitted by the regulations in this part, for transportation or storage on board vessels.

§ 146.04 4 Signs and abbreviations.

The meaning of the signs and abbreviations used in § 146.04-5 are as follows:

(*) Asterisk indicates the article may or may not come within the classification shown. If, in accordance with the definitions contained herein, the article does come within the classification it is subject to the regulations in this part.