Affiliation:
1. Atomic Energy Authority, Reactors Department, 13759 Cairo, Egypt, E-mail:
Abstract
Abstract
Research reactors of power greater than 20 MW are usually designed to be cooled with upward coolant flow direction inside the reactor core. This is mainly to prevent flow inversion problems following a pump coast down. However, in some designs and under certain operating conditions, flow inversion phenomenon is predicted. In the present work, the best-estimate Material Testing Reactors Thermal-Hydraulic Analysis program (MTRTHA) is used to simulate a typical MTR reactor behavior with upward cooling under a hypothetical case of loss of off-site power. The flow inversion phenomenon is predicted under certain decay heat and/or pool temperature values below the design values. The reactor simulation under loss of off-site power is performed for two cases namely; two-flap valves open and one flap-valve fails to open. The model results for the flow inversion phenomenon prediction is analyzed and a solution of the problem is suggested.
Subject
Safety, Risk, Reliability and Quality,General Materials Science,Nuclear Energy and Engineering,Nuclear and High Energy Physics,Radiation
Reference17 articles.
1. Analysis of Loss of Flow Accident at Pakistan Research Reactor-1;Annals of Nuclear Energy,2005
2. Simulation of Loss-of-Flow Transients in Research Reactors;Annals of Nuclear Energy,2000
3. Validation of the ATR-SINDA Fuel Plate Model Using Advanced Test Reactor Start-up Data;Nuclear Technology,1994
4. Core cooling under accident conditions at the high-flux beam reactor;Transactions-of-the-American-Nuclear-Society,1991
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