Use of risk analysis for LNG facility siting in the US Changes in NFPA 59A and in future Regulations A road map and required actions

摘要

Current US Federal Regulations in 49 CFR, part 193 and the NFPA 59A Standards are very prescriptive and inflexible in allowing alternative safety mitigation considerations for LNG facility siting without applying for a special permit. The types and sizes of accidental releases to be evaluated are prescribed and no deviation is allowed. Without considering a spectrum of events their likelihood of occurrence and the resultant consequences, it is impossible to design proper mitigation actions or emergency response procedures. The benefit of knowing and preparing for a properly evaluated "most likely event" scenario is the resultant proper application of economics and personnel resources of the emergency responders.