The document deals with the description of results obtained by the Relap5 code in post-test analysis of the Counterpart Test (CT) SP-CL-21 performed in the Pressurized Water Reactor (PWR) experimental simulator LSTF installed at the Tokai-Mura JAERI Research Center in Japan. The Relap5 is the well-known computer code developed at Idaho National Laboratory in US: the code is in use at UNIPI since more than a decade. The LSTF loop is an Integral Test Facility (ITF) simulating with full height, full pressure, full linear power a US type 4-loop Westinghouse PWR. The concerned test is the low power CT of experiments performed in LOBI, BETHSY and SPES ITF. Because of the maximum power limitations of BETHSY and LSTF, the test SB-CL-21 was performed starting from a ‘low power condition’ (about 20% nominal power): thus, the initial 10-50 seconds of the experiments were ‘highly’ distorted with respect to the test scenario expected in the reference Nuclear Power Plant (NPP), the prototype. Therefore, additional a tests were performed (in the same way in LOBI and SPES ITF). The present document discusses the comparison of Relap5 results with measured data in SB-CL-21.
Post-test analysis with RELAP5/MOD2 code of the LSTF small break test SB-CL-21 counterpart to BETHSY, SPES and LOBI-MOD2 Experiments
D'Auria F.
Primo
Supervision
;
1992-01-01
Abstract
The document deals with the description of results obtained by the Relap5 code in post-test analysis of the Counterpart Test (CT) SP-CL-21 performed in the Pressurized Water Reactor (PWR) experimental simulator LSTF installed at the Tokai-Mura JAERI Research Center in Japan. The Relap5 is the well-known computer code developed at Idaho National Laboratory in US: the code is in use at UNIPI since more than a decade. The LSTF loop is an Integral Test Facility (ITF) simulating with full height, full pressure, full linear power a US type 4-loop Westinghouse PWR. The concerned test is the low power CT of experiments performed in LOBI, BETHSY and SPES ITF. Because of the maximum power limitations of BETHSY and LSTF, the test SB-CL-21 was performed starting from a ‘low power condition’ (about 20% nominal power): thus, the initial 10-50 seconds of the experiments were ‘highly’ distorted with respect to the test scenario expected in the reference Nuclear Power Plant (NPP), the prototype. Therefore, additional a tests were performed (in the same way in LOBI and SPES ITF). The present document discusses the comparison of Relap5 results with measured data in SB-CL-21.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
