[Code of Federal Regulations]
[Title 49, Volume 3]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR193.2057]

[Page 129]
 
                        TITLE 49--TRANSPORTATION
 
 CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF 
                       TRANSPORTATION (CONTINUED)
 
PART 193_LIQUEFIED NATURAL GAS FACILITIES: FEDERAL SAFETY STANDARDS--
Table of Contents
 
                      Subpart B_Siting Requirements
 
Sec. 193.2057  Thermal radiation protection.

    Each LNG container and LNG transfer system must have a thermal 
exclusion zone in accordance with section 2.2.3.2 of NFPA 59A 
(incorporated by reference, see Sec. 193.2013) with the following 
exceptions:
    (a) The thermal radiation distances shall be calculated using Gas 
Research Institute's (GRI) report GRI-89/0176 (incorporated by 
reference, see Sec. 193.2013), which is also available as the ``LNGFIRE 
III'' computer model produced by GRI. The use of other alternate models 
which take into account the same physical factors and have been 
validated by experimental test data shall be permitted subject to the 
Administrator's approval.
    (b) In calculating exclusion distances, the wind speed producing the 
maximum exclusion distances shall be used except for wind speeds that 
occur less than 5 percent of the time based on recorded data for the 
area.
    (c) In calculating exclusion distances, the ambient temperature and 
relative humidity that produce the maximum exclusion distances shall be 
used except for values that occur less than five percent of the time 
based on recorded data for the area.

[Amdt. 193-17, 65 FR 10958, Mar. 1, 2000, as amended by Amdt. 193-18, 69 
FR 11336, Mar. 10, 2004]