Experiment SB-SG-10 was conducted on November 17, 1992 using LSTF. Experiment simulated recovery actions from multiple steam generator (SG) tube rupture accident in PWR. Primary pressure was kept higher than broken SG secondary-side pressure due to coolant injection from high pressure injection (HPI) system into cold and hot legs even after start of full opening of intact SG relief valve (RV). Full opening of power-operated relief valve (PORV) in pressurizer (PZR) resulted in pressure equalization between primary and broken SG systems as well as PZR liquid level recovery. Broken SG RV opened once after start of intact SG RV full opening. Core was filled with saturated or subcooled liquid through experiment. Significant natural circulation prevailed in intact loop after start of intact SG RV full opening. Significant thermal stratification appeared in hot legs especially during time period of HPI coolant injection into hot legs.
Language |
: | English |
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Report No. |
: | JAEA-Data/Code 2018-004 |
Pages |
: | 64 Pages |
Publication Year/Month |
: | 2018/03 |
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Paper URL |
: | |
Keywords |
: | PWR; LSTF; Steam Generator Tube Rupture Accident; Recovery Actions; High Pressure Injection System; Intact Steam Generator Depressurization; Primary Depressurization; Core Cooling |
Research Facility |
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Acecsses |
: |
- Accesses |
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