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(f) Flammable liquid. “Flammable liquid” means any liquid which gives off flammable vapors (as determined by flash point from an open cup tester, as used for test of burning oils) at or below a temperature of 80° F. Flammable liquids are referred to by grades as follows:

(1) Grade “A”: Any flammable liquid having a Reid vapor pressure of 14 pounds or more.

(2) Grade “B”: Any flammable liquid having a Reid vapor pressure under 14 pounds and over 81/2 pounds.

(3) Grade “C”: Any flammable liquid having a Reid vapor pressure of 812 pounds or less and flash point of 80° F. or below.

(g) Liquefied flammable gas. “Liquefied flammable gas" means any flammable gas having a Reid vapor pressure exceeding 40 pounds, which has been compressed and liquefied for purposes of transportation. Liquefied flammable gases are referred to by classes as follows:

(1) Class 1: Any liquefied petroleum gas, including gases or mixtures of gases produced with or derived from petroleum or natural gas, and composed predominantly of hydrocrabons or mixtures of hydrocarbons such as propane, propylene, butane, butylene or butadiene.

(2) Class 2: Any liquefied flammable gas other than liquefied petroleum gas. (h)

Pressure vacuum relief valve. "Pressure vacuum relief valve” means any device or assembly of a mechanical, liquid, weight, or other type used for the automatic regulation of pressure or vacuum in enclosed places.

(i) Reid vapor pressure. Reid vapor pressure” means the vapor pressure of a liquid at a temperature of 100° F., expressed in pounds per square inch, absolute, as determined by the “Reid Method" as described in the American

Society for Testing Materials, Standard D-323 (most recent revision), Method of Test for Vapor Pressure of Petroleum Products. This standard is available at U.S. Coast Guard Headquarters for reading purposes, or it may be purchased from the society in Philadelphia, Pa.

(j) Flame screen. “Flame screen" means a single screen of corrosionresistant wire of at least 30 by 30 mesh or two screens, both of corrosion-resistant wire, of at least 20 by 20 mesh, spaced not less than one-half inch or more than 11/2 inches apart.

(k) Cofferdam. “Cofferdam” means a void or empty space separating two or more compartments for the purpose of isolation or to prevent the contents of one compartment from entering another in the event of the failure of the walls of one to retain their tightness.

(1) Spark arrestor. "Spark arrestor" means any device, assembly, or method of a mechanical, centrifugal, cooling, or other type and of a size suitable for the retention or quenching of sparks in exhaust pipes from internal combustion engines. § 113.92 Grading of vessels in accord

ance with products transported. Vessels which are transporting Grade A”, Grade “B”, Grade “C”, Grade “D”, or Grade “E” cargoes in bulk, or which being in ballast have on a previous voyage transported cargoes of these grades and whose tanks are not free of explosive gases, will be dealt with as Grade “A”, Grade “B”, Grade “C”, Grade “D”, or Grade "E" vessels, respectively. If a vessel is carrying two grades of hazardous cargo at the same time, it will be treated as a vessel of the grade corresponding to that of the more volatile product. A vessel in ballast, whose tanks are kept charged with an inert gas during transit shall be dealt with as a Grade “E' vessel. Tanks which are ballasted full to the level of the expansion hatch deck coaming will be accepted as the equivalent of a tank which has been gasfreed since last transporting hazardous cargo. $ 113.93 Construction of cargo tanks.

(a) Grade “A” cargo tanks shall extend to the main deck with hatches and vents located on the weather deck.

(b) All cargo tanks to be vented at a gage pressure of 4 pounds per square inch or less shall be constructed and tested as

required by standards established by the $ 113.97 Information to be furnished by American Bureau of Shipping or other

vessels of all grades. recognized classification society.

Vessels of Grade “A”, “B”, “C”, “D”, (c) All cargo tanks to be vented at

and “E” shall furnish the following ina gage pressure exceeding 4 pounds per

formation: square inch shall be constructed in ac

(a) Classification status. cordance with pertinent provisions of the

(b) Amount and name of each grade Tank Vessel ulations of the United

of cargo carried. States Coast Guard or in accordance with (c) The actual vapor pressure in the comparable regulations of regulatory case of Grade “A” cargoes, and certificaagencies of other nations.

tion that the vapor pressures for Grade

“B” cargoes are less than 14 and more § 113.94 Liquid level gaging, Grade “A” tanks.

than 81/2 pounds per square inch, vapor

pressures for Grade “C” cargoes are 812 Tank vessels which are to load or

pounds per square inch or less, and the discharge Grade “A” liquids in Canal

flash points in the case of Grade “D” and Zone waters shall provide a method of “E” cargoes; all determinations to be determining the liquid level in the tank

made in accordance with definitions conwithout opening ullage holes, cargo tained in $ 113.91. hatches, or butterworth plates: Provided, That ullage holes fitted with

§ 113.98 Venting of cargo tanks. sounding pipes tightly secured to the un (a) On all tank ships each cargo tank derside of the tank tops, open at the shall be equipped with a vent. The bottom, and extending to within 18 diameter of a vent shall be not less than inches or less of the bottom of the tank 21/2 inches. shall be considered as complying with (b) Cargo tanks in which Grade “A” the foregoing requirement.

liquids are to be transported shall be § 113.95 Transportation of Grade “B”

fitted with a venting system consisting

of branch vent line from each cargo or “C” liquids in shelter-deck vessels.

tank connected to a vent header which Transportation of Grade “B” or “C”

shall extend to a reasonable height liquids is prohibited in cargo tanks hav

above the weather deck and be fitted ing a shelter between deck space, not with a flame arrestor or pressure-vacuum adapted or used for carrying hazardous relief valve. Each branch vent line may liquid cargo in bulk, located over the be provided with a manually operated tanks (between the tank top and main control valve, provided it is by-passed deck) unless such space is separated

with a pressure-vacuum relief valve, or from other parts of the vessel by gas each cargo tank to which such a branch tight steel bulkheads. Hatches and

vent line is connected is fitted with vents of such tanks shall be located on

an independent pressure-vacuum relief the weather deck. Where ullage plugs valve which shall extend to a reasonable are located in this space they must be height above the weather deck, or the secured and sealed in such manner as to control valve is locked in open position necessitate breaking of the seal to open while in Canal Zone waters. Venting of them: Provided, That the ullage holes Grade “A” cargo tanks near the deck may be opened during cargo transfer

line is prohibited. operations.

(c) Cargo tanks in which Grade “B”

or “C” liquids are to be transported shall 8 113.96 Classification of vessels for car. be fitted with individual pressurerying petroleum products in bulk.

vacuum relief valves, which shall extend Grade “A,” “B”, “C”, “D”, or “E' ves to a reasonable height above the weather sels are required to be maintained in

deck, or shall be fitted with a venting class for carrying hazardous cargo in

system consisting of branch vent lines bulk by the American Bureau of Ship

connected to a vent header which shall ping, or other recognized classification

extend to a reasonable height above the

weather deck and be fitted with a flame society. If not so classed, vessels shall

arrestor or a pressure-vacuum relief apply to the Board of Local Inspectors

valve. of the Canal Zone Government for a

(d) Venting systems required for certificate of inspection stating their fit

Grade “A” liquids may be used in lieu of ness for carrying hazardous cargoes in systems required for Grade B” and “C”. bulk in Canal Zone waters.

(e) Cargo tanks in which Grade "D"

or “E” liquids only are to be transported (b) Galley fires are normally permitshall be fitted with gooseneck vents and ted during cargo transfer operations: fiame screens unless such tanks are Provided, That prior to transferring vented by pressure-vacuum relief valves Grade “A”, B” or “C” cargoes, the Masor a venting system of branch vent lines ter or Senior Deck Officer on duty and and a vent header.

the Panama Canal Company Oil Plant (f) Venting systems required for Foreman or his representative shall Grade “A”, “B”, or “C” liquids may be make an inspection to determine whether used in lieu of systems required for in their judgment galley fires may be Grade "D" or "E".

maintained with reasonable safety dur

ing transfer operations. § 113.99 Venting of bunker tanks.

(c) Tank vessels that are to transfer Bunker fuel tanks shall be fitted with a

Grade “A” cargo shall have all openings gooseneck vent with suitable wire flame

in the top of the tanks closed except screen or a standard pressure-vacuum branch vent lines. relief valve. The minimum size of. vents

(d) During transfer operations a red shall not be less than 242 inches. The signal (flag by day and electric lantern vent outlet shall be located above the

at night) shall be so placed that it will weather deck.

be visible on all sides. § 113.100 Venting of cofferdam.

(e) Warning placards shall be dis

played at the gangway, in a conspicuous Cofferdams shall be provided with

place, during transfer of cargo, to warn gooseneck vents fitted with a flame

persons approaching the gangway. The screen or pressure-vacuum relief valves.

placard shall state in letters not less than The diameter of a vent shall not be less

2 inches high the following: than 242 inches.

DANGER § 113.101 Ventilation.

HANDLING PETROLEUM All enclosed parts of the vessel other than cargo, fuel, and water tanks and

NO LOITERING cofferdams, shall be provided with efi

NO FIRES, NO SMOKING cient means of ventilation. Pump rooms and compartments containing machinery

NO VISITORS where sources of vapor ignition are nor (The placards shall be supplied by the mally present shall be ventilated in such Panama Canal Company.) a way as to remove vapors from points

(f) A sign shall be placed in the radio near the floor levels or bilges. Effective room warning against the use of radio steam or air actuated gas ejectors, blow

equipment during transfer of Grade “A”, ers or ventilators fitted with heads for

“B”, or “C” liquids, except as authorized natural ventilation, will be approved for by the Marine Director. this purpose.

& 113.104 Fire fighting requirements. § 113.102 Ventilation for certain hold

(a) Fire fighting equipment shall be spaces.

adequate and in good operating condiHold spaces containing independent

tion. It shall include a steam smothering cargo tanks shall be considered to be

or a flue gas or a carbon dioxide or a equivalent to cargo pump rooms and

foam system to the cargo tanks and water shall be ventilated and safeguarded as

service, fire hoses and portable extinsuch.

guishers. $ 113.103 General safety requirements

(b) Fire hoses with suitable nozzles during transfer operations.

attached shall be connected to the out

lets at all times while in Canal Zone (a) Boiler fires are normally permit

waters. Sufficient hose shall be conted during cargo transfer operations:

nected to reach all parts of the vessel. Provided, That prior to transferring

While moored to a dock, connections to Grade “A, “B”, or “C” cargoes, the

shore lines shall be made if water presMaster or Senior Deck Officer on duty

sure is not available aboard the vessel. and the Panama Canal Company Oil

(c) In case of fire aboard a vessel the Plant Foreman or his representative shall make an inspection to determine

Port Captain shall be in complete charge whether, in their judgment, boiler fires

for the purpose of coordinating the varimay be maintained without reasonable ous Canal Zone Government or Panama. safety during transfer operations.

Canal Company functions concerned.

The Panama Canal Company Oil Plant (5) Lighting fixtures shall be of an apForeman or his representative shall di proved type. rect terminal fire fighting facilities until (6) Electric motors shall be of an the arrival of the Canal Zone Govern approved type either totally enclosed or ment Fire Department, or the Port Cap ventilated to the atmosphere by suction tain or his representative. The vessel's and discharge air ducts. crew shall cooperate with the terminal (c) Stacks of vessels shall not be authorities. Nothing contained herein cleaned while vessel is moored to an oil shall relieve the master of responsibility dock. for the safety of his vessel.

(d) Tank covers, ullage holes and but

terworth plates shall, unless tanks are § 113.105 Smoking.

gas free, be kept closed under the fol(a) Smoking is not allowed and shall

lowing conditions: not be permitted aboard tank vessels in (1) During transit. Canal Zone waters while loading or un (2) While self-propelled vessels are loading Grade “A”, “B” or “C” cargoes. directly alongside, or any source of vapor (b) Smoking is not allowed and shall

ignition is present or in close proximity not be permitted on tank vessels carrying

to tanks. Grade "A”, “B” or “C” cargoes while they (3) Unless special permission has been are in the locks or within one-half mile

granted by Canal autho

to open of any lock.

tanks: Provided, That ullage plugs may (c) Smoking is not allowed and shall

be removed when necessary for the purnot be permitted on the weather deck of

pose of gauging or sampling, or durtank vessels in Canal Zone waters when

ing cargo transfer operations. they are not gas free.

(4) No cargo tank hatches, ullage (d) Smoking is not allowed and shall

holes, or butterworth plates shall be not be permitted on a dock in close prox opened or shall remain open without imity of a tank vessel that is not gas free.

flame screens, except under the super(e) “No smoking" signs shall be posted vision of the senior members of the crew in appropriate places.

on duty, unless the tank opened is gas (f) Except where smoking is prohib free. ited as provided above, the master or (e) No pitch, tar, turpentine, or other senior deck officer on duty shall desig combustible shall be boiled on any pier nate where smoking is permitted.

or on board any vessel without permis8 113.106 General safety requirements.

sion of the Port Captain.

(f) All doors, air ports, etc., in com(a) Nonsparking tools shall be pro

partments on weather deck that are vided for opening and closing of cargo

facing or adjacent to cargo tanks and hatch covers.

where fires, open flames, or other sources (b) On Grade “A”, “B”, “C”, or “D”

of vapor ignition exist shall be kept vessels the electrical installation in a

closed while in Canal Zone waters on all cargo pump room, or any enclosed space

tank vessels that are not gas free. immediately adjoining cargo tanks shall

(g) Riveting, burning, welding or like meet the following requirements:

fire-producing operations shall not be (1) Switch boards, distributing panels,

undertaken within or on the boundaries switches, fuses and other circuit-inter

of bulk cargo spaces or in spaces adrupting devices are not to be fitted in

jacent thereto until an inspection has these spaces.

been made by an authorized Panama (2) No portable lighting equipment Canal Company chemist to determine except explosion proof, self contained, that such operations can be undertaken battery fed lamps shall be used in spaces with safety. that are not gas free.

(h) Tank vessels equipped to carry (3) Wiring shall be leaded and Grade “A”, “B”, “C”, or “D” liquids shall armored and shall be run through gas have their galleys, living quarters, gentight fittings having stuffing glands at eral cargo spaces, boiler rooms, and inlets and outlets.

enclosed spaces containing propelling (4) Joints in wiring shall be made machinery, or other machinery where only in wiring appliances, such as junc sources of vapor ignition are normally tion boxes, outlet boxes, etc., and such present, segregated from their cargo boxes shall be metallic and shall be gas tanks by cofferdams or pump rooms, tight.

tanks, or air spaces.

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(i) Exhaust lines from internal combustion engines, where run through the deck, or through the sides of the superstructure, shall be extended to a height of at least 4 feet above the deck. The exhaust piping shall be either insulated or water-cooled. A spark arrestor shall be installed in each exhaust line.

(j) Storage batteries shall not be located in cargo pump rooms. The space in which they are located shall be well ventilated and they shall be protected against mechanical and electrical injury.

(k) Tank vessels handling Grade “A”, “B”, “C”, or “D” liquids shall have their cargo pumps isolated from all sources of vapor ignition by gas tight bulkheads. Totally enclosed motors of the “explosion proof” type, motors ventilated on both the intake and exhaust by ducts to the atmosphere, and engines driven by steam shall not be considered to be sources of vapor ignition. § 113.107 Cargo handling;

duty. A sufficient number of the crew shall be on duty to perform transfer operations. § 113.108 Closing of scuppers and sea

valves. The Deck Officer in charge shall see that all scuppers are properly plugged during transfer operations except on tank vessels using water for deck cooling. Sea valves shall be closed and lashed, or sealed to indicate that they should not be open during all cargo loading operations. Under no circumstances shall such valves be secured by locks. § 113.109 Connecting cargo se.

Sufficient hose shall be used to provide for the movement of the vessel. When cargo hose is supported by ship's tackle, the Deck Officer in charge is responsible for raising and lowering of the hose to prevent strains and chafing or other damage to hose. $ 113.110 Electric bonding.

A tank vessel shall be electrically connected to the shore piping, through which the cargo is to be transferred, prior to connecting the cargo hose, and electrical connection shall be maintained until after the cargo hose has been disconnected and any spillage removed. The Senior Deck Officer on duty shall

Prior to transfer of cargo the Senior Deck Officer on duty, who shall be a licensed officer or a certificated tankerman, shall inspect the vessel and ascertain that the following conditions exist:

(a) There is a sufficient number of crew on duty.

(b) All scuppers are properly plugged.

(c) Warning signs are displayed as required.

(d) Cargo hose is connected and cargo valves are set.

(e) All cargo connections for the transfer of “A”, “B” and “C” cargoes have been made to the vessel's pipe lines and not through open end hose in a hatch.

(f) In transferring Grades "A", "B" and “C” cargoes, there are no fires or open flames present on the deck, or any compartment which is located on, facing, or open and adjacent to that part of the deck on which cargo hose is connected.

(g) The shore terminal or other tank vessel concerned has reported itself in readiness for transfer of cargo.

(h) All sea valves connected to the cargo piping system are closed.

(i) In transferring Grade “A”, “B” and “C” cargoes, that an inspection has been made to determine whether boiler fires can be maintained with reasonable safety.

(j). In transferring Grade “A”, “B” and “C” cargoes that an inspection has been made to determine whether galley fires can be maintained with reasonable safety.

(k) No repair work in way of cargo spaces is being carried on without permission of the proper Panama Canal authority.

(1) The bonding cable has been properly connected.

(m) In transferring Grade “A” cargo, all openings in the top of the tanks are closed except branch vent lines.

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