EVALUATION OF AIR CLEANING SYSTEM CONCEPTS FOR EMERGENCY USE IN LMFBR PLANTS

摘要

Nineteen different air cleaning concepts are arranged into twenty-four systems and evaluated for use as accident mitigating systems in LMFBR plants. Both single, low-leakage containment plants and once-through operation ap¬plicable to containment/confinement plants are considered. Plant characteristics affecting air cleaning requirements are defined for 1000 MWe plants and a sodium and radio¬logical release term is postulated. The accident conditions under which the emergency air cleaning system (EACS) must function is established by use of SOFIKE-II and HAA-SB computer codes. Criteria are developed for evaluating the various systems and for assigning comparative ratings. The numerical ratings are combined with information on cost and development potential to arrive at recommendations for the most promising systems. The conclusion is made that reliable and effective systems are feasible for use as engineered safety features for LMFBR plants, but that development effort is required for all the air cleaning concepts evaluated.