[Code of Federal Regulations]

[Title 46, Volume 4]

[Revised as of October 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 46CFR108.131]



[Page 123]

 

                            TITLE 46_SHIPPING



                  (This book contains parts 90 to 139)

 

   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)

 

PART 108_DESIGN AND EQUIPMENT--Table of Contents

 

                 Subpart B_Construction and Arrangement

 

Sec.  108.131  Definitions.



    (a) Standard Fire Test means the test in which specimens of the 

relevant bulkheads or decks, having a surface of approximately 4.65 

square meters (50 square feet) and a height of 2.44 meters (8 feet) 

resembling as closely as possible the intended construction and 

including, where appropriate, at least one joint, are exposed in a test 

furnace to a series of temperature relationships approximately as 

follows:

    (1) At the end of 5 minutes--538[deg]C. (1,000[deg]F.)

    (2) At the end of 10 minutes--704[deg]C. (1,300[deg]F.)

    (3) At the end of 30 minutes--843[deg]C. (1,550[deg]F.)

    (4) At the end of 60 minutes--927[deg]C. (1,700[deg]F.).

    (b) Bulkheads and decks are defined and classed as follows:

    (1) A class bulkhead or deck means a bulkhead or deck that--

    (i) Is made of steel or other equivalent material; and

    (ii) Prevents the passage of flame and smoke for 60 minutes if 

subjected to the standard fire test.

    (2) A 60 bulkhead or deck means an A class bulkhead or deck that--

    (i) Is insulated with approved insulation, bulkhead panels, or deck 

covering;

    (ii) If subjected to the standard fire test for 60 minutes, has an 

average temperature rise on the unexposed side of the insulated bulkhead 

or deck of less than 139[deg]C. (250[deg]F.) above the temperature 

before the standard fire test and has a temperature rise at any point on 

the unexposed surface, including any joint, of less than 180[deg]C. 

(325[deg]F.) above the temperature before the standard fire test.

    (3) B class bulkhead or deck means a bulkhead or deck that--

    (i) Is made of approved noncombustible material;

    (ii) Prevents flame from passing through it for 30 minutes if 

subjected to the standard fire test.

    (4) C class bulkhead or deck means a bulkhead or deck made of 

approved noncombustible material.

    (c) Equivalent material means a material that by itself or with 

insulation has smoke and fire retardant properties equal to that of the 

steel required for ``A'' or ``B'' class bulkheads or decks and has 

structural qualities equivalent to steel at the end of the applicable 

fire exposure.

    (d) Approved material means a material approved under one of the 

following subparts of Subchapter Q of this chapter:

    (1) Deck coverings, Subpart 164.006.

    (2) Structural insulation, Subpart 164.007.

    (3) Bulkhead panel, Subpart 164.008.

    (4) Noncombustible materials, Subpart 164.009;

    (5) Interior finishes, Subpart 164.012.

    (e) Stairtower means a stairway that penetrates more than one deck 

within the same enclosure, or two or more stairways that--

    (1) Are arranged vertically one above the other; or

    (2) Penetrate both the deck and the overhead within the same 

enclosure.

    (f) Accommodation space includes, sleeping, mess, hospital, 

recreational, toilet, washing and shower spaces, and corridors.