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[en] The RELAP5/MOD3.2.2gamma thermal-hydraulic code has been used to simulate the International Standard Problem (ISP) 38 experiment performed at the BETHSY integral test facility. The experiment simulates a loss of residual heat removal system during mid-loop operation transient at 0.5 % (138 kW) of nominal core power value, with the pressurizer and steam generator outlet plenum manways open. The secondary side is full of air and isolated. Two calculations of the ISP38 experiment were performed, the first using a BETHSY nodalization developed for the RELAP5/MOD2 code modified for the RELAP5/MOD3.2.2gamma and the second using a more detailed BETHSY nodalization (sliced) developed for the RELAP5/MOD3.2.2gamma code at the University of Zagreb. The results of the two calculations were compared with the experimental data, and conclusions were drawn about the effect of the more detailed nodalization on the calculation results. Several sensitivity studies were performed to evaluate the effects of changing the selected parameters on the calculated results.(author)
Source
Jencic, I.; Glumac, B. (Nuclear Society of Slovenia (Slovenia)) (eds.); Nuclear Society of Slovenia, Ljubljana (Slovenia). Funding organisation: Inst. Jozef Stefan, Ljubljana (Slovenia); European Nuclear Society, Brussels (Belgium); Ministry of Education, Science and Sport of Slovenia, Ljubljana (Slovenia); Slovenian Nuclear Safety Administration, Ljubljana (Slovenia); Agency for Radwaste Management, Ljubljana (Slovenia); Faculty of Mechanical Engineering, Univ. of Ljubljana (Slovenia); Graduate Program Nucelar Engineering, Univ. of Ljubljana (Slovenia); Inst. of Metals and Technology, Ljubljana (Slovenia); The Inst. of Metal Constructions, Ljubljana (Slovenia); The Milan Vidmar Electroinstitute, Ljubljana (Slovenia); Welding Inst., Ljubljana (Slovenia); NPP Krsko (Slovenia); Framatome, Paris (France); Westinghouse Electric Systems Europe S.A., Brussels (BE); Elmont d.o.o., Krsko (Slovenia); Inetec, Zagreb (Croatia); NUMIP d.o.o, Krsko (Slovenia); Q Techna d.o.o., Krsko (Slovenia); SIAP d.o.o., Krsko (Slovenia); 97.2 Megabytes; ISBN 961-6207-17-2; 
; 2001; [8 p.]; International Conference Nuclear Energy in Central Europe 2001; Portoroz (Slovenia); 10-13 Sep 2001; Also available from Slovenian Nuclear Safety Administration, Zelezna cesta 16, Ljubljana (SI) or Nuclear Society of Slovenia, Jamova 39, Ljubljana (Slovenia); 5 refs., 3 tabs., 8 figs.
; 2001; [8 p.]; International Conference Nuclear Energy in Central Europe 2001; Portoroz (Slovenia); 10-13 Sep 2001; Also available from Slovenian Nuclear Safety Administration, Zelezna cesta 16, Ljubljana (SI) or Nuclear Society of Slovenia, Jamova 39, Ljubljana (Slovenia); 5 refs., 3 tabs., 8 figs.