of not less than 85 gallons for the 12gallon size and 250 gallons for the 40gallon size. The time of effective discharge shall be approximately 3 or 4 minutes and the range of the stream shall not be in excess of 40 feet from the nozzle with the major portion of the foam falling between 20 and 40 feet. The maximum pressure developed within the extinguisher with the outlet closed and the solutions at 120° F. shall not exceed 500 pounds per square inch.

(d) Chemical charge. (1) For the outer container the chemical charge shall be a water solution of bicarbonate of soda and a foam-forming ingredient, and for the inner container, a water solution of aluminum sulfate. The chemical employed shall be of such quality and in such proportions as will assure compliance with the requirements in regard to pressures and performance.

(2) The chemical charge shall be of such quality and character that it can be stored in the containers in which it is supplied for at least 1 year without deterioration, and its water solutions shall be capable of remaining in the charged extinguisher at least 1 year without deterioration or becoming foul. It shall be capable of producing a durable foam consisting of a mass of minute bubbles filled with a noncombustible gas which are not easily broken down by intense heat and which will adhere well to vertical or horizontal surfaces and not be harmful to persons, or materials not harmed by water.

(3) The containers in which the chemical charge is supplied shall be of substantial construction, preferably entirely of metal, and shall be impervious to moisture or air. Each container shall have a securely attached label bearing complete and detailed directions for the preparation of the charge which it contains. In addition, each label shall include the following:

(i) Some descriptive designation, as, for example, a trade name which is definitely identified with the charge of the particular make and composition which is to be used with the extinguisher.

(ii) A statement of the particular extinguisher with which the charge is to be used.

(iii) The name and address of the manufacturer of the extinguisher with which the charge is to be used, or his exclusive and generally recognized trademark or trade device.

(e) Labeling and marking. Each extinguisher shall have permanently and securely attached to the extinguisher shell a metal plate carrying the following:

(1) Operating directions in letters not less than 1⁄2 inch in height, of a color different from the background.

(2) Directions for recharging.

(3) A statement of the particular make or brand of chemical charges to be used with the extinguisher.

(4) A statement that if not used for fire, the extinguisher shall be discharged and recharged at least once a year.

(5) That whenever the extinguisher is discharged, it shall be thoroughly cleaned, including the hose, before refilling.

(6) That it shall be protected from freezing.

(7) That the extinguisher has been tested at the test pressure required.

(8) Each extinguisher shall also bear, either on the metal plate attached to the side of the shell or on a separate metal plate attached to the extinguisher cap, full directions for the care and replacement of the safety release device.

§ 28.3-3

Specifications for portable carbon-tetrachloride-type-(a) Materials and workmanship. The container and all parts of the operating mechanism shall be of brass, lead, or other material of equal corrosion-resisting properties. No material subject to deterioriation by the liquid shall be used in contact with the liquid or its vapor. The workmanship and finish shall be of first-class character throughout.

(b) Type. Extinguishers shall be of the self-contained, hand-operated type, which expel the extinguishing liquid by the operation of a pump forming an integral part of the extinguisher itself. No form of device whose operation is dependent on stored energy will be acceptable.

(c) Construction. The extinguisher shall be of sufficiently rugged construction to withstand the vibrations to which it will be subjected, and shall be capable of being effectively operated at any angle or in any position in which it would be held in actual service, after having been dropped from a horizontal holding position through a distance of 4 feet upon a 2-inch pipe lying at right angles to the axis of the extinguisher on a concrete floor. The design and construction of the

The

parts by which the machine is placed in operation must be as simple as possible and of a character such that their method of use is readily apparent. design and construction shall be such that at least 1 quart of extinguishing liquid can be discharged when the extinguisher is operated in any position in which it would be held in actual service.

(d) Performance. The extinguisher shall be capable of being easily and effectively operated by a person of ordinary strength; it shall be capable of being effectively operated at any inclination or in any position in which it is likely to be held in service; when held and operated in the normal operating position, the range shall be such that the liquid is projected a horizontal distance of at least 20 feet from the nozzle, in a practically continuous and compact stream, not appreciably broken by the discharge of air. When continuously operated by a person of ordinary strength, it shall be capable of delivering the liquid at the rate of 1 quart in from 40 to 50 seconds. It shall effectively prevent the loss of extinguishing liquid from the extinguisher by leakage or otherwise.

(e) Extinguishing liquid. The extinguishing liquid shall be capable of extinguishing fires caused by the burning of inflammable liquids and solids, shall be a non-conductor of electricity, and shall consist of carbon tetrachloride containing other suitable products necessary to produce a liquid conforming to the following requirements:

(1) Appearance. The material shall be a clear, homogeneous, mobile liquid.

(2) Specific gravity. The specific gravity at 15.5/15.50 C. shall be not less than 1.50.

(3) Cold test. The liquid shall have a cold test not higher than minus 45.50 C. (minus 50° F.).

(4) Distillation. Not over 2 percent shall distill below 60° C. At least 90 percent shall distill between 70° and 80° C. At least 99 percent shall distill below 100° C.

(5) Impurities. The liquid shall be free from nitrobenzene, water, acid, or alkali, and free halogen, and shall not contain more than 1 percent, by weight, of carbon disulphide. It shall not corrode brass, lead, or other material of equal corrosion-resisting properties.

(f) Labeling and marking. Each extinguisher shall have permanently and

securely attached to the extinguisher shell a metal plate carrying the following:

(1) Clear and concise operating instructions, conspicously arranged, in letters not less than one-eighth inch in height, of a color different from that of the background and of the other instructions on the plate. The operating instructions should be the most conspicuous part of the plate.

(2) Complete directions for refilling and cautions against the use of liquids other than those specified, and against permitting the extinguisher to remain partially or completely empty.

§ 28.3-4 Specifications for portable carbon-dioxide-type-(a) Materials and workmanship. The workmanship and finish shall be of first-class character throughout.

(b) Design. (1) The design and operation shall be simple and reliable. The carbon dioxide gas shall be contained in cylinders which have been constructed, tested, and marked in accordance with Interstate Commerce Commission specifications applying to containers for this gas and in effect at the time the cylinder is made. The capacity of the cylinders shall be such that when charged with carbon dioxide, the weight of carbon dioxide will not exceed 68 percent of the water capacity by weight, or the cylinder.

(2) A manually operated release valve shall be supplied which shall provide a time of discharge suitable to the size. A suitable outlet shall be provided for directing the carbon dioxide gas or snow. A safety release device of efficient design and operation shall be provided to release the gas between the range of pressure of 2,500 and 3,000 pounds per square inch.

(3) The 35-pound and 100-pound extinguishers shall be of a type which may, by simple means and by a single operator be rapidly put into operation. They shall be fitted with a suitable nozzle and hose, mounted on a reel or rack, of sufficient length to reach any part of the space to be protected.

(4) The construction shall be rugged and suitable for marine use. The manually operated release valve shall be ruggedly built for repeated operation and shall not be subject to corrosion or shall not cause freezing of the gas discharge.

(c) Testing. The charged cylinder used in the original equipment with the

necessary fittings shall be tested by means of a water seal for leakage for 24 hours, or by other suitable means, and all leaking cylinders shall be rejected.

(d) Extinguishing gas. The carbon dioxide extinguishing gas shall be commercially pure carbonic acid gas or pure carbon dioxide, free from moisture and from free oxygen and from other impurities in material quantities.

(e) Labeling and marking. (1) Each extinguisher shall have permanently and securely attached to the extinguisher's shell a metal plate carrying the following:

(i) Clear and concise operating instructions, conspicuously arranged. The operating instructions shall be the most conspicuous part of the plate.

(ii) Complete directions for maintaining the extinguisher in effective condition. The tare weight of the cylinder shall be stamped into the valve and shall include the empty cylinder itself, the valve, and the syphon reaching to the bottom of the cylinder.

(iii) A statement that the extinguisher shall be recharged only at charging stations appearing on the card attached to the extinguisher.

(2) In addition to the metal plate, each extinguisher shall be provided with a card, contained in a durable waterproof envelope attached to the extinguisher by a corrosion-resisting wire or metal chain, on which are listed the names and addresses of the manufacturer's recharging stations where there are facilities for properly recharging the extinguisher.

manufac

§ 28.3-5 Approval. The turer shall submit an application to the Commandant for each type of fire extinguisher for which approval is desired, together with plans and specifications in quadruplicate. Upon request such number of samples as are required for proper testing of each type shall be submitted. The cost of conducting tests incident to approval shall be borne by the manufacturer.

[6 F. R. 88, as amended at 9 F. R. 14343]

§ 28.3-6 Marking. Every fire extinguisher approved shall have permanently and securely attached, a metallic name plate having plainly stamped thereon the name of the fire extinguisher; the rated capacity in gallons, quarts, or pounds; the name and address of the

person or firm for whom approved; the directions for use; and the identifying mark of the actual manufacturer. Other details for marking are also included in the specifications of the various types.

CARBURETOR BACKFIRE FLAME ARRESTOR

§ 28.5-1 General provisions; approval. Flame arrestors, backfire traps and other similar devices are to meet the following general requirements to secure approval:

(a) Devices which are approved and listed by the Underwriters Laboratories, Inc., will be approved without further test whenever the manufacturer submits an affidavit to that effect to the Commandant.

(b) Devices which, at the time of promulgation of the regulations in Parts 24-28 of this chapter are approved by the Navy Department, will be approved without further test whenever the manufacturer submits an affidavit to that effect to the Commandant.

(c) The Commandant will receive proposals for approval of other types and will formulate such tests as may be necessary, which tests will be conducted with the manufacturer's material and at his expense.

[6 F. R. 88, as amended at 9 F. R. 14343]

29.20

29.22

Certificate of award of number kept on board undocumented vessel Sales of undocumented vessels to aliens.

29.24 Owner furnishing information when changes occur.

29.26 Procedure upon change of permanent residence.

29.28 Number assigned required on bows of undocumented vessel.

AUTHORITY: §§ 29.8 to 29.28 issued under secs. 1-5, 40 Stat. 602, as amended; 46 U. S. C. 288.

SOURCE: § § 29.8 to 29.28 contained in CGFR 47-3, 12 F. R. 707.

§ 29.8 Basis and purpose of numbering regulations. By virtue of the authority vested in the Commandant of the

Coast Guard under section 101 of the Reorganization Plan No. 3 of 1946 (3 CFR, 1946 Supp.) and the act of June 7, 1918, as amended (40 Stat. 602, as amended; 46 U. S. C. 288), the regulations in this part are prescribed to provide adequate means for numbering of undocumented vessels in accordance with the intent of the statute and to obtain its correct and uniform administration.

§ 29.10 Vessels required to be numbered. The following undocumented vessels are required to be numbered:

(a) All vessels equipped with permanently installed motors.

(b) All vessels over 16 feet in length equipped with detachable motors.

§ 29.12 Vessels not required to be numbered. (a) The following undocumented vessels are not required to be numbered:

(1) All vessels not exceeding 16 feet in length temporarily equipped with detachable motors.

(2) Public vessels.

(3) Motor lifeboats carried as lifesaving equipment on inspected vessels.

(b) The words "temporarily equipped with detachable motors" shall be construed to mean outboard motors which are clamped or otherwise temporarily fastened as distinguished from outboard motors bolted or otherwise permanently secured. The controlling principle shall be whether or not the vessel has permanently installed motors rather than the design or construction of the vessel.

(c) Undocumented vessels listed in paragraph (a) of this section will not be numbered except upon instructions of the Commandant.

§ 29.14 Application for certificate of award of number. (a) The owner of any undocumented vessel however acquired, or his duly authorized agent, shall make application for a certificate of award of number to the Officer in Charge, Marine Inspection, United States Coast Guard, having jurisdiction over the area in which the vessel is owned. If the boat is to be in the possession of a person other than the person who holds title thereto under a conditional sales or retain title contract or similar arrangement under which title does not pass, the application shall be made by the person who holds legal title.

(b) Upon purchasing or acquiring a vessel which previously has been issued a certificate of award of number, and after completion of the bill of sale on the reverse side of the certificate of award of number (Form CG 1513)' by the vendor or the former owner, the purchaser will execute the application for number for undocumented motor vessel, which is incorporated on the reverse side of the certificate of award of number, and surrender the certificate, bill of sale, and application for a new number (which are all on Form CG 1513) to the Officer in Charge, Marine Inspection, within the statutory period of 10 days.

(c) In the case of new vessels or in the case of vessels which have not been previously numbered or in the case of vessels which have been issued the old form of certificate of award of number (NAVCG 1513), which does not contain the application, the owner of the vessel or his duly authorized agent shall make the application in duplicate for a number on Form CG 1512,' application for number for undocumented motor vessel, and shall surrender this form, after completion, together with documentary evidence of ownership or the certificate of award of number with the bill of sale properly executed, to the proper Officer in Charge, Marine Inspection.

§ 29.16 Documentary evidence of

ownership. The Coast Guard District Commander or the Officer in Charge, Marine Inspection, who receives the application for an award of number will satisfy himself that the applicant has legal title to the vessel. Any case in which ownership or legal title is in doubt will be referred to the Commandant. Original ownership may be proved by the purchaser as follows:

(a) Bill of sale.

(b) Receipted bills for material used in construction.

(c) Statement of reputable boat building concern signed by an owner, officer or duly authorized agent thereof that the boat was constructed for the applicant in its factory or yard.

(d) In the case of vessels sold as surplus property by the United States Maritime Commission or the War Shipping Administration, the papers furnished the successful bidder in the form of a sale

1 Not filed with the Division of the Federal Register.

order or certificate of delivery of vessel, as the case may be, shall be accepted as sufficient evidence of ownership.

(e) Such other evidence of ownership as is acceptable to the Coast Guard District Commander or the Officer in Charge, Marine Inspection.

§ 29.18 Award of number. A number will be awarded by the Officer in Charge, Marine Inspection, upon receipt of the application together with proof of ownership and a letter, in lieu of the certificate, will be issued by him authorizing the vessel to be operated, pending issuance of the certificate. The Coast Guard District Commander will issue the certificate of award of number in all instances except where he has designated and authorized officers or employees under his command to issue such certificates in his behalf.

§ 29.20 Certificate of award of number kept on board undocumented vessel. (a) The certificate of award of number for an undocumented vessel shall be kept on board at all times and shall be accessible to the person in charge except when such certificate is in the custody of the Coast Guard District Commander or the Officer in Charge, Marine Inspection. This requirement, however, does not apply to any vessel not exceeding 17 feet in length, measured from end to end over the deck, excluding sheer, nor to any vessel regardless of length if the design of fittings is such that the carrying of the certificate of number on board would render it imperfect, illegible or would tend to destroy its use as a means of ready identification.

(b) In the case where a letter is issued assigning a number previous to the issuance of a certificate of award of number, the new owner may operate such vessel without penalty for failure to have such certificate of award of number if the letter is carried and produced when necessary for identification.

§ 29.22 Sales of undocumented vessels to aliens. For the duration of the war the issuance of a certificate of award of number to a vessel, the sale or transfer of which, in whole or in part, is subject to section 37 of the Shipping Act, 1916, as amended (40 Stat. 901, as amended; 46 U. S. C. 835), shall be subject to the United States Maritime Commission's General Order 58, as revised (§ 221.6 of this title). For a vessel less than 1,000 gross tons and not documented under

the laws of the United States, General Order 58 gives blanket approval to the sale, mortgage, lease, charter, delivery, or transfer and agreement for the sale, mortgage, lease, charter, delivery, or transfer to any person not a citizen of the United States of any vessel or interest therein owned in whole or in part by any person who is a citizen of the United States or by a corporation organized under the laws of the United States or of any State, Territory, district, or possession thereof. For a vessel documented under the laws of the United States or a vessel 1,000 gross tons or over, prior approval of the sale by the Maritime Commission is required.

§ 29.24 Owner furnishing information when changes occur. (a) The owner of

a numbered vessel shall notify the Coast Guard District Commander or Officer in Charge, Marine Inspection, within 10 days, if:

(1) The vessel is lost, destroyed, or abandoned.

(2) The vessel is transferred from one person to another; or

(3) He moves his permanent residence to a place in another customs district or to a place within the jurisdiction of another Coast Guard District Commander.

(b) In the case of change of ownership, loss, destruction, or abandonment of a numbered vessel, the notice shall be accompanied by a surrender of the certificate of award of number if it is in existence.

§ 29.26 Procedure upon change of permanent residence. If the owner has moved his permanent residence to a place in another customs district or to a place within the jurisdiction of another Coast Guard District Commander, the original number will be retained by the vessel and the owner's change of permanent residence shall not be a cause for the surrender of the certificate except under special instructions of the Commandant. However, vessels sold into another customs district or Coast Guard district may be renumbered anew.

§ 29.28 Number assigned required on bows of undocumented vessel. (a) Every undocumented vessel required to be numbered shall have the number awarded or assigned painted on or attached to each bow so that the number reads from left to right.