LAC 43:XIII.6957. Thermal Radiation Protection [49 CFR 193.2057]

A. Each LNG container and LNG transfer system must have a thermal exclusion zone in accordance with section 2.2.3.2 of NFPA-59A-2001 (incorporated by reference, see LAC 43:XIII.6713) with the following exceptions. 1. The thermal radiation distances must be calculated using Gas Technology Institute's (GTI) report or computer model GTI-04/0032 LNGFIRE3: A Thermal Radiation Model for LNG Fires (incorporated by reference, see LAC 43:XIII.6713). The use of other alternate models which take into account the same physical factors and have been validated by experimental test data may be permitted subject to the Commissioner's approval. [49 CFR 193.2057(a)] 2. 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. [49 CFR 193.2057(b)] 3. 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. [49 CFR 193.2057(c)]