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Subpart 146.21-Detailed Regulations

Governing Inflammable Liquids $ 146.21-1 Definition of inflammable

liquids. (a) An inflammable (flammable) liquid is defined by the ICC regulations as any liquid which gives off inflammable (flammable) vapors (as determined by flash point from Tagliabue's open-cup tester, as used for test of burning oils) at or below a temperature of 80° F.

(b) Such definitions are binding upon all shippers making shipments of inflammable (flammable) liquids by common carrier vessels engaged in interstate or foreign commerce by water. These definitions are accepted and adopted and form part of the regulations in this subchapter applying to all shippers making shipments of inflammable (flammable) liquids by an vessel, and shall apply to the owners, charterers, agents, master or other persons, transporting, carrying, conveying, storing, stowing or using inflammable (flammable) liquids on board any vessel subject to R.S. 4472, as amended (46 U.S.C. 170), and the regulations in this subchapter. (CGFR 57-33, 22 F.R. 8581, Oct. 29, 1957] $146.21-10 Export shipments of in

flammable liquids. Certain inflammable liquids are permitted by these regulations to be exported under shipping names differing from shipping names as required in domestic transportation. Such substances together with these "synonym" shipping names are indicated in the tables in § 146.21–100 and the "synonym" shipping names that are permitted are shown thereon. Substances shipped under these "synonym” shipping names may be accepted on board vessels that are permitted to transport such substances in export; provided the shipment otherwise conforms to the provisions of the regulations in this part. Stowage on board vessels shall be in accordance with the stowages indicated in the tables for the particular character of vessel involved. (CGFR 51–19, 16 F.R. 7219, July 24, 1951)

$ 146.21–15 Stowage on board vessels

. (a) All inflammable liquids permitted for transportation on board vessels shall. when taken on board a vessel, be stowed in accordance with the provisions applying to the particular character of vesse! as shown in the tables, $ 146.21-100, and with the detailed regulations of stowage shown in this subpart.

(b) ICC specification portable tanks, not over 20,000 pounds gross weight and ICC specification tank cars and motor vehicle tank trucks approved for the commodity carried and permitted transportation on board vessels by § 146.21100 shall be stowed in the specific location provided by § 146.21-100. The conversion table 46 CFR 146.07-40(c) does not apply. (CGFR 51-19, 19 F.R. 7219, July 24, 1951, as amended, CGFR 63–19, 28 F.R. 5380, May 30, 1963) $146.21-20 “On deck” stowage.

(a) Inflammable liquids, stowage of which is permitted "On deck” by the provisions of the table $ 146.21–100 shall be properly secured, when so stowed, in a manner satisfactory to the master or other person in charge of the vessel con. sistent with the following conditions:

(1) Such inflammable liquid shall be so stowed as to provide safe access to the crew's quarters and to all parts of the deck required to be used in the navigation and necessary working of the vessel

(2) Such inflammable liquids shall not be stowed within a distance in a horizontal plane of 25 feet of an operating or embarkation point of a lifeboat when such point is at the same deck level as that upon which an inflammable liquid cargo is stowed, except on a vessel which by reason of its breadth, it is impossible to provide such horizontal distance; deck stowage is permitted when the cargo is confined to only one side of the center line of the vessel.

(3) Fire plugs, sounding pipes and access to same shall be maintained free and clear of inflammable liquid cargo stowed “On deck."

(b) On passenger-carrying vessels, when limited stowage of inflammable liquid is permitted “On deck”, such liquids shall be stowed well away from any deck or spaces provided for use of passengers.

(c) The fire hose at each fire hydrant on the vessel in the vicinity of inflammable liquids stowed “On deck” shall be fitted with an approved combination spray nozzle. During loading and unloading operations, the pressure shall be maintained in the fire mains. Two hand portable fire extinguishers of the dry chemical type of at least 15 pounds capacity or two portable 212-gallon foam type extinguishers are also required and shall be located so as to be accessible in the event of fire occurring in the vicinity of such inflammable liquid cargo. Any foam used shall be of a type suitable for use with the lading.

(d) When portable tanks, tank cars and motor vehicle tank trucks containing inflammable liquids are stowed as permitted by the regulations in this subpart, the area in way of each 21,000 U.S. gallons or less of inflammable liquids shall also be protected by one or more B-V semiportable foam (40-gal. capacity) or dry chemical (100 lbs. minimum capacity) fire extinguishers, or alternatively, by a fire hose fitted with an approved portable mechanical foam nozzle with pick-up tube and two 5-gallon cans of foam liquid concentrate. When carrying commodities incompatible with the conventional foam system, the foam shall be of a type suitable for use with the lading. The fire extinguishers shall be located so as to be accessible in the event of fire occurring in the vicinity of these portable tanks. (CGFR 51-19, 19 F.R. 7219, July 24, 1951, as amended, CGFR 63–19, 28 F.R. 5380, May 30, 1963) § 146.21-25 “Under deck” stowage.

(a) Stowage of inflammable liquids "Under deck" shall be either in ventilated holds or in holds that are gastight.

(b) Inflammable liquids that are permitted by the regulations in this subpart to be stowed in a cargo hold or a compartment on board a passenger vessel shall not be so stowed unless the compartment or hold authorized for such stowage is fitted with either an overhead water sprinkler system, inert gas or steam smothering system.

(c) Inflammable liquids permitted on passenger vessels may be stowed in a hold or compartment the overdeck of which forms a boundary of a passenger space, provided such overdeck is of an AI type of construction or in lieu thereof is fitted on its underside in way of the passenger area with three inches of incombustible insulation.

(d) Compartments or holds in which inflammable liquid cargo is to be stowed and which are fitted with electrical circuits having outlets within the compartment or hold shall have such circuits disconnected from all sources of power supply unless the fixtures within the hold are of explosion proof type, and such circuits shall not be again connected for power until the compartment or hold has been freed of any accumulation of inflammable vapors.

(e) After the stowage of inflammable Liquid cargo has commenced in a compartment or hold that is not fitted with explosion proof type of electrical outlets no portable means of artificial lighting shall be used within such a compartment or hold unless such portable equipment is of the explosion proof type. Electrical connections for permitted portable lighting shall be made to outlets located outside of the compartment or hold and above the weather deck. Hand flashlights shall be of the non-sparking type. (f) Inflammable liquids may

be stowed in a compartment having a boundary bulkhead or deck which also forms a boundary to a boiler room, engine room or a coal bunker or galley provided no containers of such inflammable liquid are stowed within twenty (20) feet of such bulkhead or deck. When the amount of such inflammable liquid to be stowed in the hold exceeds the space

available the twenty (20) feet separation need not be complied with provided one or more of the following protections are provided:

(1) The bulkhead or deck is insulated with at least three (3) inches of insulation throughout its entire area subject to heat.

(2) A temporary wooden bulkhead of at least two inches thickness is constructed in the hold at least three inches off the engine room and six inches off the boiler room bulkhead and covering the entire area of the bulkhead that is subject to heat. The space between the permanent bulkhead and the temporary wooden bulkhead shall be filled full with bulk asbestos or mineral wool.

(3) A temporary wooden bulkhead constructed of one inch T and G sheathing located three feet off the boiler room or engine room bulkhead and filled with sand to a height of six feet above the tank top.

(g) Cargo compartments located “Tween decks” and having a boundary bulkhead which also forms a boundary to a boiler room, engine room, coal bunker, galley or a boiler room uptake casing may be utilized for the stowage of inflammable liquids under the conditions as outlined in paragraph (f) of this section except that the provision in paragraph (f) (3) of this section requiring filling with sand to a height of 6 feet shall be modified to provide for only 3 feet of sand.

(h) Inflammable liquids in drums or in export wooden cases having inside containers in excess

of

one quart capacity shall not be stowed as beam fillers. Wooden barrels, wooden boxes, and fiberboard boxes with inside containers of inflammable liquids of less than one quart capacity shall not be stowed as beam fillers unless it is possible to stow and observe "This Side Up" markings. (CGFR 59–14, 24 F.R. 5271, June 30, 1959)

$ 146.21-30 Stowage of inflammable

liquids with explosives and other dan

gerous articles. The stowage of inflammable liquids with explosives and other dangerous articles shall conform to the following conditions:

(a) Inflammable liquids in any quantity shall not be stowed on deck im. mediately over a hold or compartment containing Class A or Class B explosives.

(b) Inflammable liquids shall not be stowed below deck or in excess of one ton on deck on a vessel carrying Class A or Class B explosives unless the engine and boiler room spaces or one complete hatch intervenes.

(c) Inflammable liquids shall not be stowed in the same hold or compartment with Class C explosives.

(d) Inflammable liquids shall not be stowed in the same hold or compartment with inflammable solids.

(e) Inflammable liquids shall not be stowed in the same hold or compartment with oxidizing materials.

(f) Infiammable liquids shall not be stowed in the same hold or compartment with corrosive liquids.

(g) Inflammable liquids in excess of one ton shall not be stowed in a hold beneath inflammable compressed gases stowed “On deck".

(h) Inflammable liquids shall not be stowed in the same hold or compartment over cylinders of non-inflammable compressed gases.

(i) Inflammable liquids shall not be stowed in the same hold or compartment with poisonous articles.

(j) Inflammable liquids shall not be stowed in the same hold or compartment with cotton, nor in the hold above or below one containing cotton. (CGFR 59–14, 24 F.R. 5271, June 30, 1959; CGFR 60–33, 25 F.R. 5237, June 11, 1960) § 146.21-35 Boundary bulkheads.

Holds, with bulkheads in which cargo openings to adjacent holds are fitted, shall not be used for the stowage of inflammable liquids unless such openings are provided with means to securely close

electrical apparatus are provided and such control means are located outside the boundaries of said space. Electrical power lines passing through a hold that is to be used for the stowage of inflammable liquids shall have such run of cable protected by metal covering to prevent damage and possible short circuit. Such metal protection shall be substantial enough to prevent crushing by reason of cargo which might be stowed against same. (CGFR 63–19, 28 F.Å. 5380, May 30, 1963) $146.21-55 Smoking prohibited, warn

ing signs. (a) Smoking prohibited in the vicinity of inflammable liquid cargo stowed “On deck" and in holds in which such cargo is stowed or in the vicinity of ventilators from such holds.

(b) Signs carrying the legend

off and make the hold gas tight or unless the adjacent hold is also used for the stowage of inflammable or combustible liquid cargo. (CGFR 51-19, 16 F.R. 7220, July 24, 1951) § 146.21-40 Hatch closing means.

All unit compartments or holds used for the stowage of inflammable liquids shall be provided with full and efficient hatch covers. Tarpaulins if fitted or required to be fitted shall be protected by dunnaging before overstowing with cargo. Such tarpaulins shall be in one piece and free of rents, tears, or holes. (CGFR 51-19, 16 F.R. 7220, July 24, 1951) $ 146.21-45 Ventilation.

All cargo holds in which inflammable liquids are to be stowed and which are provided with means for ventilating shall, before any inflammable liquid cargo in a quantity in excess of 1 ton be stowed in such hold, have fire screens fitted at the weather end of the vent ducts. This fire screen shall consist of two layers of fine brass wire screen of at least a 20 x 20 mesh spaced not less than 12 inch or more than 1/2 inches apart. This screen may be removable, and if so fitted, means for effectively securing the same in place when in service shall be provided. Mushroom type heads shall have similiar fire screens so fitted as to completely and efficiently cover the open area. For holds that are gas tight and fitted with vent trunks such vent trunks may be eficiently blanked off at both termini in lieu of fitting flame screens. Stowage of inflammable liquids in a quantity in excess of 1 ton shall not be permitted in holds or compartments that are fitted with gooseneck type of vent trunk heads. (CGFR 51–19, 16 F.R. 7220, July 24, 1951] 8 146.21-50 Electrical equipment in

holds. Inflammable liquids shall not be stowed in holds or compartments in which electrical apparatus of any type except explosion proof are fitted unless positive means for disconnecting all such

Inflammable Vapors Keep Lights and Fire Away

No Smoking

shall be posted at each avenue of approach to inflammable liquid cargo when stowed "On deck" and in the vicinity of cargo hold ventilators when inflammable cargo is stowed in the hold. Such sign shall be painted on a white background using a bright red color for lettering. The letters shall not be less than 3 inches high. (CGFR 51-19, 16 F.R. 7220, July 24, 1951) § 146.21-57 Use of power-operated in.

dustrial trucks in spaces containing

flammable liquids. (a) In a space in which packaged flammable liquids are stowed, only approved power-operated industrial trucks with a recognized testing laboratory designation of EX, EE, GS, LPS, and DS (see $ 146.09–15) may be used for handling cargo including the handling of such packaged flammable liquids. [CGFR 61-44, 26 F.R. 11019, Nov. 23, 1961) $ 146.21-60 Potable spirits.

Potable spirits packed in strong, tight barrels, drums, casks, wooden or fiberboard boxes may, when stowed in a compartment not subject to artificial heat, be transported on board any vessel without further restriction. (CGFR 51–19, 16 F.R. 7220, July 24, 1951) $ 146.21-65 Limited quantity ship

ments. (a) Inflammable liquids, except those enumerated in paragraph (c) of this section, in inside metal containers not over 1 quart capacity each, or in inside containers not over 1 pint or 16 ounces by weight each, packed in strong outside containers, except as otherwise provided, are exempt from specification packaging, marking other than name of contents, and labeling requirements.

(b) Such limited quantity shipments may be accepted on board vessels subject to the regulations in this part, provided the bill of lading or other shipping paper correctly describes the article and the required marking on the outside container is in accordance with the true name in the commodity list. Stowage shall be "On deck under cover” or “Tween decks” in a compartment not subject to artificial heat.

(c) The following articles in any quantity are not exempt from any of the regulations in this subpart:

(1) Acrolein.
(2) Acrolein, inhibited.
(3) Aliphatic mercaptan mixtures.

(4) Aluminum triethyl and mixtures or solutions thereof.

(5) Aluminum trimethyl and mixtures or solutions thereof.

(6) Amyl mercaptan.
(7) Butyl mercaptan.
(8) Carbon bisulfide (disulfide).
(9) Dimethyldichlorosilane.
(10) Ethyl chloride.
(11) Ethyl mercaptan.
(12) Ethyl trichlorosilane.
(13) Ethyldichlorsilane.
(14) Ethylene imine, inhibited.
(15) Ethylene oxide.

(16) Inflammable (flammable) liquids which are also corrosive liquids or oxidizing materials under the regulations in this part.

(17) Isopropyl mercaptan.

(18) Lithium aluminum hydride (ethereal).

(19) Methyl dichlorosilane.
(20) Methyl vinyl ketone, inhibited.

(21) Methylchloromethyl ether, anhydrous.

(22) Methylhydrazine.
(23) Methyltrichlorosilane.
(24) Nickel carbonyl.
(25) Pentaborane.

(26) Peroxides, organic, liquids or solutions, N.O.S.

(27) Propyl mercaptan.

(28) Pyroforic fuel and mixtures or solutions thereof.

(28a) Pyroforic solutions.

(29) Spirits of nitroglycerin in excess of one percent by weight.

(30) Trichlorosllane.
(31) Trimethylchlorosllane.
(32) Dimethylhydrazine, unsymmetrical.
(33) Vinyl trichlorosilane.
(34) Zinc ethyl.

(35) Zirconium, metallic, solutions Or mixtures thereof.

(36) Methyl magnesium bromide in ethyl ether in concentrations not over 40 percent.

(37) Trlisobutyl aluminum and mixtures and solutions thereof.

(38) Ethyl aluminum sesquichloride and mixtures and solutions thereof.

(39) Diethyl aluminum chloride and mixtures and solutions thereof.

(40) Ethyl aluminum dichloride and mistures and solutions thereof.

(41) Methyl aluminum sesquichloride and mixtures and solutions thereof.

(42) Methyl aluminum sesquibromide and mixtures or solutions thereof. (CGFR 51-19, 16 F.R. 7219, July 24, 1951 as amended by CGFR 57-33, 22 FR. 8581, Oct. 29, 1957; CGFR 57-49, 22 F.R. 10062, Dec. 14, 1957; CGFR 58–9, 23 F.R. 4846, June 28, 1958, CGFR 58-48, 28 F.R. 9636, Dec. 12, 1958; CGFR 59-14, 24 F.R. 5271, June 30, 1959; CGFR 62–11, 27 F.R. 5282, June 5, 1962) § 146.21-70 Limited quantity ship

ments of paint products. (a) Paint, enamel, lacquer, stain, shellac, varnish, aluminum, bronze, gold, wood filler, liquid, and lacquer base liquid and thinning, reducing and removing compounds therefor, and driers, liquid, therefor, when packed in inside glass or

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