Simulation analysis of Maanshan steam generator level high-high transient due to reactor coolant pump trip and restart

Conference · Fri Jun 01 04:00:00 EDT 1990 · Transactions of the American Nuclear Society; (USA)

OSTI ID:6032446

Lee, Shawcuang; Wang, Jyhgang; Lee, Heikuang; King, Chuanheng

On March 21, 1989, the reactor coolant pump (RCP) of Maanshan nuclear power plant unit 1 was tripped so that the power output of loop 1 decreased to almost zero. After this short transient, the unit 1 reactor remained in steady-state operation and maintained 19% of rated power with only two loops (two RCPs). The problem of RCP-A was then resolved, and it was restarted at {approximately} 30 min after the prior trip. After 11 s, a water-level transient occurred in steam generator (SG)-A, and shortly thereafter the turbine and generator were automatically tripped because of the SG-A high-high level setpoint. At that point, because of another electrical system failure, the electrical bus could not automatically switch over the RCP power supply to off-site power so that all three RCPs were tripped because of a low-voltage signal. The resulted in a reactor trip. In this study, the Institute of Nuclear Energy Research was requested to analyze the scenario of the Maanshan nuclear power plant unit 1 SG-A high-high level transient event, which was induced by RCP-A restart after an accidental trip.

• OSTI ID: 6032446
• Report Number(s): CONF-900608--
• Conference Information: Journal Name: Transactions of the American Nuclear Society; (USA) Journal Volume: 61
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
ANALOG SYSTEMS
BOILERS
COMPUTERIZED SIMULATION
CONTROL SYSTEMS
FAILURES
FUNCTIONAL MODELS
PUMPS
REACTOR SIMULATORS
SIMULATION
SIMULATORS
STEADY-STATE CONDITIONS
STEAM GENERATORS
TRAINING
TRANSIENTS
VAPOR GENERATORS