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These definitions apply to Chapter 30 only.
3.3.119.1 A-Class Boundary
A boundary designed to resist the passage of smoke and flame for 1 hour when tested in accordance with ASTM E119, Standard Test Methods for Fire Tests of Building Construction and Materials, or UL 263, Standard for Fire Tests of Building Construction and Materials.
3.3.119.2 B-Class Boundary
A boundary designed to resist the passage of flame for 1/2 hour when tested in accordance with ASTM E119, Standard Test Methods for Fire Tests of Building Construction and Materials, or UL 263, Standard for Fire Tests of Building Construction and Materials.
3.3.119.3 Central Safety Station
A continuously manned control station from which all of the fire control equipment is monitored. If this station is not the bridge, direct communication with the bridge must be provided by means other than the ship's service telephone.
3.3.119.4* Heat-Sensitive Material
A material whose melting point is below 1700°F (927°C).
3.3.119.5 Heel
The inclination of a ship to one side.
3.3.119.6 Heel Angle
The angle defined by the intersection of a vertical line through the center of a vessel and a line perpendicular to the surface of the water.
3.3.119.7* International Shore Connection
A universal connection to the vessel's fire main to which a shoreside fire-fighting water supply can be connected.
3.3.119.8* Marine System
A sprinkler system installed on a ship, boat, or other floating structure that takes its supply from the water on which the vessel floats.
3.3.119.9* Marine Thermal Barrier
An assembly that is constructed of noncombustible materials and made intact with the main structure of the vessel, such as shell, structural bulkheads, and decks; meets the requirements of a B-Class boundary; and is insulated such that, if tested in accordance with ASTM E119, Standard Test Methods for Fire Tests of Building Construction and Materials, or UL 263, Standard for Fire Tests of Building Construction and Materials, for 15 minutes, the average temperature of the unexposed side does not rise more than 250°F (121°C) above the original temperature, nor does the temperature at any one point, including any joint, rise more than 405°F (207°C) above the original temperature.
3.3.119.10 Marine Water Supply
The supply portion of the sprinkler system from the water pressure tank or the sea suction of the designated sprinkler system pump up to and including the valve that isolates the sprinkler system from these two water sources.
3.3.119.11 Supervision
A visual and audible alarm signal given at the central safety station to indicate when the system is in operation or when a condition that would impair the satisfactory operation of the system exists. Supervisory alarms must give a distinct indication for each individual system component that is monitored.
3.3.119.12 Survival Angle
The maximum angle to which a vessel is permitted to heel after the assumed damage required by stability regulations is imposed.
3.3.119.13 Type 1 Stair
A fully enclosed stair that serves all levels of a vessel in which persons can be employed.