Fabricating processes startup

Each new plant that fabricates, processes, or otherwise handles fissionable materials undergoes a safety analysis prior to startup. One part of the safety analysis is to assess the potential consequences of a postulated woi t credible criticality accident. To perform this assessment, the total energy release—expressed as total number of fissions from the criticality excursion—must be estimated or assumed. This paper presents the results of study for development of an empirical model to estimate energy release from a criticality accident. 

An auxiliary heat exchanger is provided in the circulation loop for startup to raise the sol-vent/caialyst medium to reaction temperature before Claus gas injection. There is no water build-up in the system, and, because the process is carried out at a temperature above the boiling point of water, the solvent is non-corrosive and the equipment is fabricated entirely of carton steel. 

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