FIGURE 111.65-40 (f) (5) (iv)-Typical elementary wiring diagram and arrangement plan of gravity davit and boat winch employing main line emergency switch and power limit switches in accordance with Subpart 160.015. Subchapter Q.

(2) New materials installed to effect compliance with this paragraph shall comply with the applicable requirements of this section. Existing materials continued in service shall comply with the requirements of this section insofar as it is reasonable and practicable.

(3) The electrical equipment installed in connection with electric power-operated lifeboat winches used with other than gravity davits on vessels contracted for prior to November 19, 1952, previously approved, but not meeting the applicable specifications or requirements set forth in paragraphs (b) through (f) of this section may be continued in service so long as they are maintained in good condition to the satisfaction of the Officer in Charge, Marine Inspection. Minor repairs and minor alterations may be made to the same standards as the original installation: Provided, That, in no case, will a greater departure from the standards of paragraphs (b) through (f) of this section be permitted than presently exist. All new installations or major replacements shall meet the applicable specifications or requirements for new vessels.

[CGFR 65-50, 30 F.R. 17044, Dec. 30, 1965, as amended by CGFR 66-71, 31 F.R. 16782, Dec. 31, 1966]

§ 111.65-45

Special requirements for electric air heaters.

(a) Application. (1) The provisions of this section, with the exception of paragraph (c) of this section, shall apply to all vessels contracted for on or after November 19, 1952. The provisions of paragraph (c) of this section shall apply to all vessels contracted for prior to November 19, 1952.

(2) The provisions of this section are applicable to electrically energized units or panels to be employed in heating a room or compartment for the comfort of the occupants thereof. The provisions of this section are not applicable to electrically energized units employed to heat

the air in enclosed apparatus, such as motors, controllers, or the like.

(b) General requirements. (1) Electric heaters shall be so constructed that the risk of fire is reduced to a minimum. Unspecified construction and circuit details shall be in accordance with Underwriters' Laboratories, Inc., Standard for Electric Space-Heating Equipment.

(2) Heaters shall be designed to heat the surrounding air principally by convection. Heater elements shall be of the enclosed type. The heater element case or jacket should be of a corrosionresistant material.

(3) Heaters shall be provided with a thermal cutout of the manually reset type that will prevent overheating and with a suitable regulating switch.

(4) Heaters for bulkhead mounting shall have their top slanted or otherwise designed to prevent hanging towels, etc., on the heater. When heaters are of the portable type, an acceptable clip or bracket shall be fitted to hold the heater in a fixed position.

(5) The external temperature of the heater enclosing case shall not exceed a temperature of 125 degrees C., except that the external temperature of the enclosing case of flush mounted heaters shall not exceed a temperature of 100 degrees C. When heaters are mounted upon, or adjacent to, the deck or bulkhead, the construction of the heater shall be such that the nearest deck or bulkhead surface will not exceed a temperature of 55 degrees C. For test purposes an ambient temperature of 25 degrees C. will be used.

(c) Electric air heaters on vessels contracted for prior to November 19, 1952. (1) Existing arrangements, materials, and equipment previously approved shall be considered satisfactory so long as they are maintained in good condition to the satisfaction of the Officer in Charge, Marine Inspection. Minor repairs and minor alterations may be made to the same standard as the original installation.

(2) All new installations or major replacements shall meet the applicable specifications or requirements for new vessels.

§ 111.65-50 Special requirements for electric cooking equipment and motor-driven commissary equipment. (a) Application. The provisions of this section, with the exception of paragraph (d) of this section, shall apply to all vessels contracted for on or after November 19, 1956. The provisions of paragraph (d) of this section shall apply to all vessels contracted for prior to November 19, 1956.

(b) Electric cooking equipment requirements. (1) All equipment, attachments and devices shall be of rugged construction and so designed as to permit complete cleaning, maintenance and repair with ease.

(2) Doors shall be provided with heavy duty hinges and locking devices to prevent accidental opening in a heavy sea.

(3) Where necessary for safety of personnel, grab rails shall be provided. Ranges shall be provided with sea rails with adjustable barriers to resist accidental cook pot movement.

(4) Means shall be provided to effect positive grease or fat collection and to prevent spillage thereof onto the deck.

(5) All equipment shall be mounted to prevent dislodgment by roll and/or pitch. whether arranged for fixed wiring or for portable wiring.

(6) Each equipment unit shall be provided with means for disconnecting it from all circuit conductors. The disconnecting means shall plainly indicate whether it is in the open or closed circuit position and shall be located in the same compartment with, and within sight of, its associated equipment. The disconnecting means may be an integral part of the equipment provided this device remains unaffected by the heat of the equipment of which it is a part.

(7) Unspecified construction and circuit details shall be in accordance with Underwriters' Laboratories, Inc., Standard for Commercial Electric Cooking Appliances.

(c) Motor-driven commissary equipment requirements. (1) All equipment shall be rigidly constructed and selfsupporting, and shall be securely mounted whether arranged for fixed wiring or for portable wiring unless such mounting would defeat the utility of the equipment.

(2) The enclosures of motors and controls shall be either watertight or totally enclosed or comparable protection provided.

(d) Electric cooking equipment and motor-driven commissary equipment on vessels contracted for prior to November 19, 1956. (1) Existing arrangements, materials, and equipment previously approved shall be considered satisfactory so long as they are maintained in good condition to the satisfaction of the Officer in Charge, Marine Inspection. Minor repairs and minor alterations may be made to the same standard as the original installation.

(2) All new installations or major replacements shall meet the applicable requirements for vessels contracted for on or after November 19, 1956.

§ 111.65-55 Special requirements for electrical steering gears.

(a) General. This section contains requirements for steering gear installations where the main or both the main and auxiliary steering means is electric power driven and where the steering control means is electric powered. Where two steering gear power motors and two separate and independent means for controlling the rudder from the pilothouse are provided, there will be two steering systems, each consisting of a power motor, control system, and steering gear feeder. In general these two systems are to be separate on a port and starboard basis. For any different arrangement of the steering gear system, special consideration and approval will be required with the intent of obtaining a steering installation which will be equivalent to the one covered in this section.

(b) Disconnecting and switching means. (1) The steering gear power motors and control systems shall be connected to the respective steering gear branch circuits in the steering gear room. Separate means shall be provided in the steering gear room for disconnecting the motor and control systems from the power source.

(2) If a means of transfer is provided in the steering gear room so arranged that either steering gear power motor and associated control system can be connected to either of the two steering gear branch circuits, interlocks shall be provided to prevent both steering systems from being connected to the same branch circuit simultaneously.

(c) Control of steering gear motors and steering control systems. (1) Means shall be provided in the steering gear room for starting and stopping the steering gear power motors and any motors that are part of the pilothouse control system.

(2) Where two separate and independent steering control systems are installed, the means of switching shall be provided in the pilothouse to select the steering control system which is to be used for steering. This selection shall be accomplished by one operating handle but the switches for each system shall be in separate enclosures or shall be separated by suitable fire-resistant barriers. The handle shall have positions for "port control", "off", and "starboard control" with such an arrangement to necessitate the passing through the "off" position when transferring from one steering system to the other.

(3) The selecting means in the pilothouse shall be so arranged that the steering gear power motor for the steering system selected will automatically be started if not already running. Any ancillary device necessary to activate the selected remote means for controlling the rudder shall be automatically operated upon starting the steering gear power motor.

(d) Overcurrent protection for steering systems. (1) Short circuit protection only shall be provided for the control circuits of controllers of steering gear power motors and motors used for control systems. This protection shall be instantaneous and rated at 400-500 percent of the current-carrying capacity of the conductors.

(2) Indicating and alarm circuits associated with steering installations shall be provided with overcurrent protection in accordance with § 111.45-10(b) (2). Pilothouse steering control systems and any other electric means for controlling the rudder remote from the steering gear room shall be provided with short circuit protection only. The protection shall be instantaneous and rated at 400-500 percent of the current-carrying capacity of the control system conductors. The protection means shall be located in the steering gear room just after the disconnecting means required by paragraph (b)(1) of this section.

(e) Indicating and alarm systems for steering installations. (1) A pilot light for each steering gear power motor and each auxiliary motor vital to the control

of the rudder shall be provided at the propulsion control station, and other locations if desired, to indicate when the motors are energized.

(2) For the requirements pertaining to overload indicating lights for steering gear pilot motors, see § 111.45-5 (p).

(3) The opening of a steering gear branch-circuit circuit breaker shall automatically be indicated at the propulsion control station by the sounding of an audible alarm.

Subpart 111.70-Special Requirements for Tank Vessels

§ 111.70-1

Application-TB/ALL.

(a) General. The requirements of this subpart contain special requirements relative to electrical installations on tank vessels. Except as modified by this subpart and regulations of Subchapter D (Tank Vessels), all other applicable regulations contained in this Subchapter J shall also apply to tank vessels.

(b) Symbols. The vessels and services to which each regulation applies are indicated by letters in the heading of the section or paragraph. The first letter or two letters indicates the type of vessel and the letter or letters following the oblique line indicates the waters in which such vessels may operate. The letters are described as follows:

(1) "T" signifies a tankship.

(2) "B" signifies a tank barge when it precedes an oblique line; or it signifies service on bays, sounds, and lakes other than the Great Lakes when it follows an oblique line.

(3) "ALL" signifies service on all waters.

(4) "O" signifies service on ocean waters.

(5) "C" signifies service on coastwise waters.

(6) "L" signifies service on Great Lakes waters.

(7) "R" signifies service on river waters.

§ 111.70-5 Definitions.

(a) General-TB/ALL. Certain terms used in this subpart are defined in this section.

(b) Cargo-TB/ALL. The term "cargo" means combustible liquid, flammable liquid, or liquefied flammable gas unless otherwise stated.

(c) Cofferdam-TB/ALL. The term "cofferdam" means a void or empty space separating two or more compartments for the purpose of isolation or to pre

vent the contents of one compartment from entering another in the event of the failure of the walls of one to retain their tightness.

(d) Combustible liquid-TB/ALL The term "combustible liquid" means any liquid having a flash point above 80° F. (as determined from an open-cup tester, as used for test of burning oils). Combustible liquids having lethal qualities are those having the characteristics of class "B" or "C" poisons as defined in §§ 146.25-10 and 146.25-15 of Subchapter N (Dangerous Cargoes) of this chapter. In the regulations of this subchapter, combustible liquids are referred to by grades, as follows:

(1) Grade D. Any combustible liquid having a flashpoint below 150° F. and above 80° F.

(2) Grade E. Any combustible liquid having a flashpoint of 150° F. or above. (e) Flashpoint-TB/ALL. The term "flashpoint" indicates the temperature in degrees Fahrenheit at which a liquid gives off a flammable vapor when heated in an open-cup tester. For the purpose of the regulations in this subchapter, flashpoints determined by other testing methods will be equivalent to those determined with an open-cup tester, as follows:

TABLE 111.70-5 (e)-EQUIVALENT FLASH POINTS

(g) Flammable liquid-TB/ALL. The term "flammable liquid" means any liquid which gives off flammable vapors (as determined by flashpoint from an open-cup tester, as used for test of burning oils) at or below a temperature of 80° F. Flammable liquids having lethal qualities are those having the characteristics of class "B" or "C" poisons as defined in §§ 146.25-10 and 146.25-15 of Subchapter N (Dangerous Cargoes) of this chapter. Flammable liquids are referred to by grades, as follows:

(1) Grade A. Any fiammable 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 81⁄2 pounds or less and a flashpoint of 80° F. or below.

flammable

(h) Liquefied gas-TB/ ALL. The term "liquefied flammable gas" means any flammable gas having a Reid1 vapor pressure exceeding 40 pounds, which has been liquefied.

(i) Tank barge—B/ALL. The term "tank barge" means any tank vessel not equipped with means of self-propulsion.

(j) Tankship-T/ALL. The term "tankship" means any tank vessel propelled by power or sail.

(k) Tank vessel-TB/ALL. The term "tank vessel" means any vessel especially constructed or converted to carry liquid bulk cargo in tanks.

[CGFR 65-50, 30 F.R. 17044, Dec. 30, 1965, as amended by CGFR 66-33, 31 F.R. 15296, Dec. 6, 1966]

§ 111.70-10

Special requirements for tank vessels contracted for on or after November 19, 1955-TB/ALL. (a) Application. The requirements of this section apply to all tank vessels contracted for on or after November 19, 1955.

(b) General. The special installation requirements, in a general manner, are contained in § 32.45-1 of Subchapter D (Tank Vessels) of this chapter, and, in some instances and to some degree, are repeated in this section for completeness of this subchapter.

(1) Cable location. Where practicable, electric cable shall be located well inboard from the sides, preferably along or near the centerline, to reduce the risk of injury in the event of collision, but it shall be kept clear of cargo tank openings. Specific additional requirements for cargo pump rooms and enclosed spaces immediately above or adjacent to cargo tanks are covered in paragraph (c) of this section.

(2) Equipment location. Except where Grade E liquids only are involved, switchboards, distribution panels. switches, fuses, and other circuit interrupting or power devices shall not be installed in cargo pump rooms nor in enclosed spaces immediately above or adjacent to cargo tanks. Regardless of the grade of liquid cargo handled by a

1 American Society for Testing Materials Standard D-323 (most recent revision), Method of Test for Vapor Pressure of Petroleum Products (Reid Method).