Hydrodynamic Loads Under PORV Actuation
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About The Author

Ph.D. in Nuclear Engineering; Thermal-hydraulic analyst for passive safety system performance of LWR; Integral test operator working on PUMA facility scaled downed from GE SBWR/ESBWR; RELAP5 and TRACE assessments.

Specialties: Waterhammer evaluation, Nuclear power plant safety system performance analysis, Thermal-hydraulic code assessment, Scaling analysis

                       

Hydrodynamic Loads Under PORV Actuation

A fluid transient analysis of the Power Operated Relief Valve (PORV) discharge piping, which is connected to the Main Steam Line (MSL), has been performed to evaluate the hydrodynamic loads caused by a sudden opening of the PORV (Lim, 2018). One component of the pipe reaction force is called the wave load. The wave load is induced by pressure waves propagating at an acoustic speed along the fluid piping systems. Pressure waves are produced by a sudden change in fluid...

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Temperature Limits In The RHR System Prior To ECCS Operation

A thermal hydraulic analysis was performed for the Residual Heat Removal (RHR) system shortly after a transition from the shutdown cooling mode to the standby Emergency Core Cooling System (ECCS) injection mode when a Loss-of-Coolant Accident (LOCA) was postulated to occur (Lim, 2018). In 1993, Westinghouse issued the Nuclear Safety Advisory Letter (NSAL), NSAL-93-004, to identify a potential concern associated with steam flashing of hot water in the isolated hot leg suction piping when the RHR system is aligned to...

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