Analysis of PWR Station Blackout Sequence Using MELCOR and Generic Severe Accident Management Guidelines within a Human Reliability Model (original) (raw)

2018

Abstract

Severe Accident Management Guidelines (SAMGs) are an important piece of a utility’s strategy for minimizing impacts of an accident. Human Reliability Assessment (HRA) within SAMGs has not been thoroughly investigated. An integrated and history-dependent HRA/SAMG model was developed at The Ohio State University to explore possible human actions that may need to be taken following an accident for their verification though simulation. The system under consideration is a pressurized water reactor undergoing a short-term station blackout initiating event (IE). The PWR behavior following the IE was simulated using the MELCOR code. The simulations showed that severe accident space is reached quickly based on an assumption of the residual water storage tank being unavailable. The data from the MELCOR model were input into the HRA model every ten minutes after the onset of fuel damage in MELCOR as input for operator actions. Results were obtained using ten sequences sampled from MELCOR data ...

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