Effects of Airborne Volatile Organic Compounds on the Performance of Pi/TiO_2 Coated Ceramic Honeycomb Type Passive Autocatalytic Recombiner

摘要

Ensuring the containment integrity during a severe accident in nuclear power reactor by maintaining the hydrogen concentration below an acceptable level has been recognized to be of critical importance after Fukushima Daiichi accidents. Although there exist various hydrogen mitigation measures, a passive autocatalytic recombiner (PAR) has been considered as a viable option for the mitigation of hydrogen risk under the extended station blackout conditions because of its passive operation characteristics for the hydrogen removal. As a post-Fukushima action item, all Korean nuclear power plants were equipped with PARS of various suppliers. The capacity and locations of PAR as a hydrogen mitigation system were determined through an extensive analysis for various severe accident scenarios.