from november 11 to 15, 2019, deputy chief engineer of shanghai nuclear engineering research & design institute (snerdi), mr. shi guobao, was invited to attend the consultancy meeting on the preparation of the coordinated research project on in-vessel melt retention benchmark at international atomic energy agency (iaea) headquarter in vienna.
ivmr is a key severe accident mitigation strategy adopted by operating nuclear power plants and advanced water reactors. according to the requirement of ssr2-1, ivmr is a typical dec case, the safety demonstration of ivmr effectiveness is needed. previous iaea meetings on this topic and state-of-the-art knowledge concluded that further work would be necessary, therefore the coordinated research project (crp) on developing a phenomena identification and ranking table (pirt) and a validation matrix, and performing a benchmark for in-vessel melt retention is expected to last 4 years starting from 2020. the purpose of the consultancy meeting is to further develop the program of work for the crp.
mr. shi made a presentation on ivr related design features, assessment and experiments in china, shared the specific experiences with delegates from other countries, and provided many suggestions for the program of the crp.