[Code of Federal Regulations]
[Title 46, Volume 7]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR190.07-10]

[Page 362-363]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 190_CONSTRUCTION AND ARRANGEMENT--Table of Contents
 
                Subpart 190.07_Structural Fire Protection
 
Sec. 190.07-10  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) The boundary bulkheads of general laboratory areas, chemical 
storerooms, galleys, paint and lamp lockers and emergency generator 
rooms shall be of ``A'' class construction.
    (1) Permanently installed divisional bulkheads between laboratories 
spaces within a general laboratory area may be of B or C class 
construction.
    (2) Temporary divisional bulkheads between laboratory spaces within 
a general laboratory area may be constructed of combustible materials 
when they are necessary to facilitate a specific scientific mission.
    (c) The boundary bulkheads and decks separating the accomodations 
and control stations from hold and machinery spaces, galleys, main 
pantries, laboratories, and storerooms, other than small service 
lockers, shall be of ``A'' Class construction.
    (1) The boundary bulkheads and decks separating general laboratory 
areas of 500 square feet or less from accommodations and control 
stations shall be of ``A-15'' Class construction as defined by Sec. 
72.05-10 of Subchapter H (Passenger Vessels) of this chapter.
    (2) The boundary bulkheads and decks separating general laboratory 
areas of over 500 square feet from accommodations and control stations 
shall be of ``A-30'' Class construction as defined by Sec. 72.05-10 of 
Subchapter H (Passenger Vessels) of this chapter.

[[Page 363]]

    (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) Elevator, dumbwaiter, stairtower, 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, 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 door shall be of the self-closing type. 
Holdback hooks will not be permitted. However, magnetic holdbacks 
operated from the bridge or 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 three-
eights of an inch.
    (7) Ceilings, linings, and insulation, including pipe and duct 
laggings, shall be 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 ceiling may have a combustible veneer 
within a room not to exceed two twenty-eighths 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 coats of paint.
    (e) Nitrocellulose or other highly flammable or noxious fume-
producing paints or lacquers shall not be used.
    (f) The provisions of paragraphs (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.

[CGFR 67-83, 33 FR 1125, Jan. 27, 1968, as amended by CGD 84-073, 52 FR 
18364, May 15, 1987; 52 FR 22751, June 15, 1987]