Validation of FDS5 Simulation for Postulated Fire in a Day Tank Room

The use of computer fire model has been dramatically increased due to a rapid development of computer hardware and numerical scheme as well. NFPA 805 requires fire models to be verified and validated against the geometric complexity of analysis regime and range of features in the models. To meet the requirement, US NRC along with EPRI and NIST had conducted an extensive verification and validation (V and V) study of fire models, which support the use of NFPA 805. NUREG-1824, which is based on ASTM E1355, is the product of the above V and V study. Verification and validation of a calculation method is intended to ensure the correctness, suitability and applicability of the method. The fire load of a day tank room of emergency diesel generator building is relatively very high compared to that of the other compartments in a nuclear power plant (NPP). This study is intended to validate the FDS5 (Fire Dynamics Simulator Ver.5) simulation results of a postulated fire at a typical day tank room of emergency diesel generator building in NPPs