Light Water Reactor Sustainability Program: Analysis of Pressurized Water Reactor Station Blackout Caused by External Flooding Using the RISMC Toolkit

Smith, Curtis¹  Mandelli, Diego¹  Prescott, Steven¹  Alfonsi, Andrea² 

[1]Idaho National Lab. (INL), Idaho Falls, ID (United States)

[2]Idaho

关键词: PWR TYPE REACTORS;    REACTOR SAFETY;    RISK ASSESSMENT;    SAFETY MARGINS;    NUCLEAR POWER PLANTS;    IDAHO NATIONAL LABORATORY;    THERMAL HYDRAULICS;    MONTE CARLO METHOD;    PROBABILISTIC ESTIMATION;    N CODES;    R CODES;    OUTAGES;    EARTHQUAKES;    TSUNAMIS;    FLOODS;    SUSTAINABILITY;    STOCHASTIC PROCESSES;    REACTOR ACCIDENTS;    AUGMENTATION;    LIFETIME EXTENSION;    MANAGEMENT;    PERFORMANCE;    PROFITS;    COMPUTERIZED SIMULATION BWR;    SBO;    flooding;    limit surface;    PRA;    dynamic PRA;   

DOI  :  10.2172/1168617
RP-ID  :  INL/EXT--14-32906
PID  :  OSTI ID: 1168617
Others  :  TRN: US1500007

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来源: SciTech Connect

【 摘 要 】

The existing fleet of nuclear power plants is in the process of extending its lifetime and increasing the power generated from these plants via power uprates. In order to evaluate the impact of these factors on the safety of the plant, the Risk Informed Safety Margin Characterization (RISMC) project aims to provide insight to decision makers through a series of simulations of the plant dynamics for different initial conditions (e.g., probabilistic analysis and uncertainty quantification). This report focuses, in particular, on the application of a RISMC detailed demonstration case study for an emergent issue using the RAVEN and RELAP-7 tools. This case study looks at the impact of a couple of challenges to a hypothetical pressurized water reactor, including: (1) a power uprate, (2) a potential loss of off-site power followed by the possible loss of all diesel generators (i.e., a station black-out event), (3) and earthquake induces station-blackout, and (4) a potential earthquake induced tsunami flood. The analysis is performed by using a set of codes: a thermal-hydraulic code (RELAP-7), a flooding simulation tool (NEUTRINO) and a stochastic analysis tool (RAVEN) ??? these are currently under development at the Idaho National Laboratory.