Collapse to view only § 92.07-5 - Definitions.
- § 92.07-1 - Application.
- § 92.07-5 - Definitions.
- § 92.07-10 - Construction.
- § 92.07-90 - Vessels contracted for prior to July 1, 1968.
§ 92.07-1 - Application.
(a) The provisions of this subpart, with the exception of § 92.07-90, apply to all vessels of 4,000 gross tons or more contracted for on or after January 1, 1962. Such vessels contracted for prior to January 1, 1962, must meet the requirements of § 92.07-90(a).
(b) The provisions of this subpart, with the exception of § 92.07-90, apply to all industrial vessels of 300 gross tons or more but less than 4,000 gross tons, contracted for on or after July 1, 1968, which carry in excess of 12 industrial personnel. Such vessels contracted for prior to July 1, 1968, must meet the requirements of § 92.07-90(b).
(c) Vessels meeting the structural fire protection requirements of SOLAS, Chapter II-2, Regulations 5, 6, 8, 9, and 11 (incorporated by reference, see § 92.01-2), may be considered equivalent to the provisions of this subpart.
§ 92.07-5 - Definitions.
(a) Standard fire test. A “standard fire test” is one which develops in the test furnace a series of time temperature relationships as follows:
5 minutes—1,000 °F. 10 minutes—1,300 °F. 30 minutes—1,550 °F. 60 minutes—1,700 °F.(b) “A” Class divisions. Bulkheads or decks of the “A” Class shall be composed of steel or equivalent metal construction, suitably stiffened and made intact with the main structure of the vessel; such as shell, structural bulkheads, and decks. They shall be so constructed, that if subjected to the standard fire test, they would be capable of preventing the passage of flame and smoke for one hour.
(c) “B” Class bulkheads. Bulkheads of the “B” Class shall be constructed with approved incombustible materials and made intact from deck to deck and to shell or other boundaries. They shall be so constructed that, if subjected to the standard fire test, they would be capable of preventing the passage of flame for one half hour.
(d) “C” Class divisions. Bulkheads or decks of the “C” Class shall be constructed of approved incombustible materials, but need meet no requirements relative to the passage of flame.
(e) Steel or other equivalent metal. Where the term “steel or other equivalent metal” is used in this subpart, it is intended to require a material which, by itself or due to insulation provided, has structural and integrity qualities equivalent to steel at the end of the applicable fire exposure.
(f) Approved material. Where in this subpart approved materials are required, they refer to materials approved under the applicable subparts of Subchapter Q (Specifications) of this chapter, as follows:
| Deck Coverings | 164.006 | Structural Insulations | 164.007 | Bulkhead Panels | 164.008 | Incombustible Materials | 164.009 | Interior Finishes | 164.012 |
(g) Stairtower. A stairtower is a stairway which penetrates more than a single deck within the same enclosure.
§ 92.07-10 - Construction.
(a) The hull, superstructure, structural bulkheads, decks, and deckhouses shall be constructed of steel. Alternately, the Commandant may permit the use of other suitable material in special cases, having in mind the risk of fire.
(b) Bulkheads of galleys, paint and lamp lockers, and emergency generator rooms shall be of “A” Class construction.
(c) The boundary bulkheads and decks separating the accommodations and control stations from cargo and machinery spaces, galleys, main pantries and storerooms, other than small service lockers, shall be of “A” Class construction.
(d) Within the accommodation and service areas the following conditions shall apply:
(1) Corridor bulkheads in accommodation spaces shall be of the “A” or “B” Class intact from deck to deck. Stateroom doors in such bulkheads may have a louver in the lower half.
(2) Stairtowers, elevator, dumbwaiter, and other trunks shall be of “A” Class construction.
(3) Bulkheads not already specified to be of “A” or “B” Class construction may be of “A”, “B”, or “C” Class construction.
(4) The integrity of any deck in way of a stairway opening, other than a stairtower, shall be maintained by means of “A” or “B” class bulkheads and doors at one level. The integrity of a stairtower shall be maintained by “A” Class doors at every level. The doors shall be of self-closing type. Holdback hooks, or other means of permanently holding the door open will not be permitted. However, magnetic holdbacks operated from the bridge or from other suitable remote control positions are acceptable.
(5) Interior stairs, including stringers and treads, shall be of steel.
(6) Except for washrooms and toilet spaces, deck coverings within accommodation spaces shall be of an approved type. However, overlays for leveling or finishing purposes which do not meet the requirements for an approved deck covering may be used in thicknesses not exceeding 3/8 of an inch.
(7) Ceilings, linings, and insulation, including pipe and duct laggings, shall be of approved incombustible materials.
(8) Any sheathing, furring or holding pieces incidental to the securing of any bulkhead, ceiling, lining, or insulation shall be of approved incombustible materials.
(9) Bulkheads, linings, and ceilings may have a combustible veneer within a room not to exceed 2/28 of an inch in thickness. However, combustible veneers, trim, decorations, etc., shall not be used in corridors or hidden spaces. This is not intended to preclude the use of an approved interior finish or a reasonable number of coat of paint.
(e) Wood hatch covers may be used between cargo spaces or between stores spaces. Hatch covers in other locations shall be of steel or equivalent metal construction. Tonnage openings shall be closed by means of steel plates.
(f) Nitrocellulose or other highly flammable or noxious fume-producing paints or lacquers shall not be used.
(g) The provisions of paragraph (d) (1) through (9) of this section apply to control spaces on vessels whose initial Application for Inspection is submitted to an Officer in Charge, Marine Inspection on or after June 15, 1987.
§ 92.07-90 - Vessels contracted for prior to July 1, 1968.
(a) For all vessels of 4,000 gross tons and over contracted for prior to January 1, 1962, existing structure arrangements and materials previously approved will 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 alterations may be made to the same standard as the original construction. Major alterations and conversions shall be in compliance with the provisions of this subpart to the satisfaction of the Officer in Charge, Marine Inspection.
(b) For industrial vessels of 300 gross tons and over but less than 4,000 gross tons, contracted for prior to July 1, 1968, which carry in excess of 12 industrial personnel, existing structure arrangements and materials previously approved will 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 alterations may be made to the same standard as the original construction. Major alterations and conversions shall be in compliance with this subpart to the satisfaction of the Officer in Charge, Marine Inspection.