Prediction of stratification in the cold legs of the AP600 using the virtual noding approach in RELAP5
- Texas A&M Univ., College Station, TX (United States)
Experiments were designed to test the new passive safety features of the AP600 and provide data to assess the prediction capabilities of the RELAP5 thermal-hydraulic code to simulate the coupled behavior of the reactor coolant system and the safety systems. Some of these experimental facilities are the APEX facility at Oregon State University and the ROSA/AP600 test facility in Japan. One of the ROSA/AP600 tests was a 1-in. loop-B cold-leg break test. During the test, temperature differences of 184 and 123 K were observed in the loop-A and loop-B cold legs, respectively. The presence of stratification in the cold legs affects the behavior of the safety systems. Because the core makeup tanks (CMTs) are connected to the cold legs by the pressure balance lines (PBLs), the hotter temperature at the top of the cold legs will cause flashing and affect the time draining of the CMT.
- OSTI ID:
- 437024
- Report Number(s):
- CONF-9606116-; ISSN 0003-018X; TRN: 96:005275-0263
- Journal Information:
- Transactions of the American Nuclear Society, Vol. 74; Conference: Annual meeting of the American Nuclear Society (ANS), Reno, NV (United States), 16-20 Jun 1996; Other Information: PBD: 1996
- Country of Publication:
- United States
- Language:
- English
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