SGTR sequence with different initiating events causing loss of heat sink
- Institute Jozef Stefan, Ljubljana (Slovenia). Reactor Engineering Division
Two SGTR transient scenarios with loss of secondary heat sink have been analyzed and compared using RELAP5/MOD3.1 thermal-hydraulic computer code. The findings of the two analyses show that the initiating event, causing the loss of heat sink influences operator actions and further course of the transient significantly. If main feedwater is lost first this leads to much different plant behavior as if reactor and turbine are tripped first. Nevertheless, both analyses have proven that if the operator ignored loss of secondary heat sink in the beginning of the transient and mitigated the consequences of SGTR first, leads to a successful outcome by applying the Feed and Bleed procedure after the SG dryout. The analyses have been performed for Krsko NPP, a two-loop Westinghouse PWR, 640 MWe, located in Slovenia.
- OSTI ID:
- 100676
- Report Number(s):
- CONF-941142-; ISBN 0-7918-1433-5; TRN: 95:019560
- 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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