Ammonia refrigeration regulations

Common Questions and Answers about Ammonia refrigeration regulations

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144586 tn?1284669764 , August 2008, is one of them. The FRA has developed many regulations, but the regulations and inspection requirements have not been satisfactory. It is interesting that operations research simulation models have been in use since the 1960's but it took until 2009 for the FRA to produce such models for simulated derailments and accidents with tank cars.