After Fukusima 1 nuclear power plant accident in Japan, lots of measures have been taken to strengthen the safety of the nuclear power plant. One of them is stress test, which evaluates the maintainability of plant safety assuming the most severe cond...
After Fukusima 1 nuclear power plant accident in Japan, lots of measures have been taken to strengthen the safety of the nuclear power plant. One of them is stress test, which evaluates the maintainability of plant safety assuming the most severe condition that has no power supply and ultimate heat sink. This report describes one of stress test results performed for domestic nuclear power plants in the point of human engineering aspect such as organization, personnel, working procedure, man-machine interface, working tool, environmental condition, education and training, etc.
The stress test for the area of human engineering has been conducted in accordance with the international guideline, which establishes ultimate accident scenarios and evaluates time and measures during the process of scenarios for recognizing the status, deciding countermeasures, installing counter-measuring facilities and its implementability before the plant reaches function failure, fuel damage or containment failure. It also evaluates the existence of relevant equipment and tools and its utilization strategy, relevance of organization and personnel, and work procedure. The evaluation results show that all the plants are appropriately prepared and maintained against ultimate condition.