POWER UPRATE EVALUATION OF MAIN STEAM ISOLATION AND MAIN STEAM CHECK VALVE USING ADVANCED ENGINEERING MODELS
Analyses were performed by Kalsi Engineering, Inc. (KEI) on the main steam isolation valves (MSIV) and main steam check valves (MSCV) at 4 pressurized water reactors to evaluate their capability to perform design basis functions at Extended Power Uprate (EPU) conditions. Disc closing velocities and actuator pressures (for MSIV) were calculated by using RELAP?. These inputs included valve specific flow and torque coefficients obtained by detailed Computational Fluid Dynamics (CFD) analyses to accurately predict hydrodynamic torque imposed on the disc throughout the stroke. Stresses, strains and displacements in all of the critical MSCV and MSIV components were determined by performing appropriate 2-D and 3-D elasto-plastic, transient dynamic finite element analysis (FEA). Fatigue life of the components under spurious closure was determined in accordance with applicable ASME Section III Code. The evaluation also included the propensity for excessive wear of the MSCV due to disc flutter, vibration and erosion.
M.S.Kalsi Neal Estep Zachary Leutwyler
Kalsi Engineering, Inc
国际会议
18th International Conference on Nuclear Engineering(第18届国际核能工程大会 ICONE 18)
西安
英文
1-5
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）