Influence of pressurizer relief valves on success of ``feed and bleed`` procedure
- Univ. of Ljubljana (Slovenia). Reactor Engineering Division
The RELAP5/MOD3.1 analysis of the accident with total loss of secondary heat sink was performed for Krsko nuclear power plant which is a two loop Westinghouse PWR power plant of 1,876 MW thermal power. In the study of ``feed and bleed`` accident managing the particular attention was given to the emergency operating procedures foreseen operator actions. This paper deals with the modeling of saturated liquid and two-phase mixture critical discharge through the pressurizer power operated relief valves and aims to evaluate its influence on the simulation of other thermal-hydraulic processes in the reactor coolant system. The time evolution of simulated accident and the determination of the longest allowed operator response time for the successful accident managing were shown to be much dependent on the prediction of critical flow through the pressurizer relief valves.
- OSTI ID:
- 100666
- Report Number(s):
- CONF-941142-; ISBN 0-7918-1433-5; TRN: 95:019550
- Resource Relation:
- Conference: American Society of Mechanical Engineers` winter annual meeting, Chicago, IL (United States), 6-11 Nov 1994; Other Information: PBD: 1994; Related Information: Is Part Of Power plant transients 1994. FED-Volume 204; Schultz, R.R.; Tsai, R.W.; Hassan, Y. [eds.]; PB: 112 p.
- Country of Publication:
- United States
- Language:
- English
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