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FIRST ATLAS DOMESTIC STANDARD PROBLEM (DSP-01)FOR THE CODE ASSESSMENT
김연식,최기용,강경호,박현식,조석,백원필,김경두,SUK K. SIM,EO-HWAK LEE,SEYUN KIM,김주성,TONG-SOO CHOI,CHEOL-WOO KIM,SUK-HO LEE,SANG-IL LEE,KEO HYOUNG LEE 한국원자력학회 2011 Nuclear Engineering and Technology Vol.43 No.1
KAERI has been operating an integral effect test facility, ATLAS (Advanced Thermal-Hydraulic Test Loop for AccidentSimulation), for accident simulations of advanced PWRs. Regarding integral effect tests, a database for major design basisaccidents has been accumulated and a Domestic Standard Problem (DSP) exercise using the ATLAS has been proposed andsuccessfully performed. The ATLAS DSP aims at the effective utilization of an integral effect database obtained from theATLAS, the establishment of a cooperative framework in the domestic nuclear industry, better understanding of thermalhydraulic phenomena, and an investigation of the potential limitations of the existing best-estimate safety analysis codes. Forthe first ATLAS DSP exercise (DSP-01), integral effect test data for a 100% DVI line break accident of the APR1400 wasselected by considering its technical importance and by incorporating comments from participants. Twelve domesticorganizations joined in this DSP-01 exercise. Finally, ten of these organizations submitted their calculation results. ThisATLAS DSP-01 exercise progressed as an open calculation; the integral effect test data was delivered to the participantsprior to the code calculations. The MARS-KS was favored by most participants but the RELAP5/MOD3.3 code was alsoused by a few participants. This paper presents all the information of the DSP-01 exercise as well as the comparison resultsbetween the calculations and the test data. Lessons learned from the first DSP-01 are presented and recommendations forcode users as well as for developers are suggested.