Open AccessSafety Analysis of Flooding Accident in Shallow Water for Offshore Floating Nuclear Power Plant
Author(s) -
Daxin Gong,
Ranling Ye,
E. Wangjiang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/769/4/042062
Subject(s) - nuclear power plant , containment (computer programming) , environmental science , nuclear power , residual , natural circulation , nuclear engineering , submarine pipeline , flooding (psychology) , water cooling , waste management , containment building , engineering , marine engineering , petroleum engineering , accident management , geotechnical engineering , mechanical engineering , computer science , psychology , ecology , physics , algorithm , nuclear physics , psychotherapist , biology , programming language
The Offshore Floating Nuclear Plant (FNPP) integrates a nuclear reactor into a floating facility. A typical FNPP developed to supply desalinated water and electric power is analysed in this paper. Flooding accident is a postulated ship accident which should be considered in designing the FNPP in order to reduce harmful radiation impacts on the crew and environment. The integrity of the containment, the safety of spent fuel assemblies and the safety of the reactor core are the key factors to evaluate the accident consequences. Flooding accident in shallow water is investigated in this paper. For FNPP, the containment has sufficient strength to resist pressure from outside induced by seawater. Meanwhile, the seawater supplies enough heat sink for the cooling of the spent fuel assemblies. In order to investigate the safety of reactor core, a RELAP5 model with Passive residual heat removal system(PRHR) is used. The results suggest that the natural circulation in the primary system can be established and the residual heat can be carried out efficiently. The reactor core can keep safe during the flooding accident.