[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: 46CFR184.240]

[Page 298-299]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 184_VESSEL CONTROL AND MISCELLANEOUS SYSTEMS AND EQUIPMENT--Table of 
Contents
 
                      Subpart B_Cooking and Heating
 
Sec. 184.240  Gas systems.

    Cooking systems using liquefied petroleum gas (LPG) and compressed 
natural gas (CNG) must meet the following requirements:
    (a) The design, installation and testing of each LPG system must 
meet ABYC A-1, ``Marine Liquefied Petroleum Gas (LPG) Systems,'' Chapter 
6 of NFPA 302, or other standard specified by the Commandant.
    (b) The design, installation and testing of each CNG system must 
meet ABYC A-22, ``Marine Compressed Natural Gas (CNG) Systems,'' Chapter 
6 of NFPA 302, or other standard specified by the Commandant.
    (c) Cooking systems using Chapter 6 of NFPA 302 as the standard must 
meet the following additional requirements:
    (1) The storage or use of CNG containers within the accommodation 
area, machinery spaces, bilges, or other enclosed spaces is prohibited;
    (2) LPG or CNG must be odorized in accordance with ABYC A-1 appendix 
4 or A-22 appendix 4, respectively;
    (3) The marking and mounting of LPG cylinders must be in accordance 
with ABYC A-1 appendix 7; and
    (4) LPG cylinders must be of the vapor withdrawal type as specified 
in ABYC A-1 section 1.7.
    (d) Continuous pilot lights or automatic glow plugs are prohibited 
for an LGP or CNG installation using ABYC A-1 or A-22 as the standard.
    (e) CNG installation using ABYC A-22 as the standard must meet the 
following additional requirements:
    (1) The storage or use of CNG containers within the accommodation 
area, machinery spaces, bilges, or other enclosed spaces is prohibited;
    (2) CNG cylinders, regulating equipment, and safety equipment must 
meet the installation, stowage, and testing requirements of paragraph 6-
5.12 of NFPA 302.
    (3) The use or stowage of stoves with attached CNG cylinders is 
prohibited as specified in paragraph 6-5.1 of NFPA 302.

[[Page 299]]

    (f) If the fuel supply line of an LPG or CNG system enters an 
enclosed space on the vessel, a remote shutoff valve must be installed 
that can be operated from a position adjacent to the appliance. The 
valve must be located between the fuel tank and the point where the fuel 
supply line enters the enclosed portion of the vessel. A power operated 
valve installed to meet this requirement must be of a type that will 
fail closed.
    (g) The following variances from ABYC A-1 section 1.12 are allowed 
for CNG:
    (1) The storage locker or housing access opening need not be in the 
top.
    (2) The locker or housing need not be above the waterline.
    (h) The following variances from NFPA 302 are allowed:
    (1) The storage locker or housing for CNG tank installations need 
not be above the waterline as required by paragraph 6-5.12.1.1(a);
    (2) Ignition protection need not be provided as required by 
paragraph 6-5.4.
    Note to Sec. 184.240:
    The ABYC and NFPA standards referenced in this section require the 
posting of placards containing safety precautions for gas cooking 
systems.

[CGD 85-080, 61 FR 1002, Jan. 10, 1996, as amended by USCG-2000-7790, 65 
FR 58465, Sept. 29, 2000]