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자료유형
학술저널
저자정보
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제43권 제2호
발행연도
2011.1
수록면
187 - 194 (8page)

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Korea Nuclear Fuel is developing the X-GEN fuel which shows high performance and robust reliability for the worldwidesupply. However, the simplified code systems such as CESEC-III which were developed in 1970s are still used in the currentNon-LOCA safety analysis of OPR1000 and APR1400 plants. Therefore, it is essential to secure an advanced safety analysismethodology to make the best use of the merits of X-GEN fuel. To accomplish this purpose, the integrated safety analysismethodology (iSAM), is developed by selecting the best-estimate thermal-hydraulic code RETRAN. iSAM possessesremarkable advantages, such as generality, integrity, and designer-friendly features. That is, iSAM can be applied to bothOPR1000 and APR1400 plants and uses only one computer code, RETRAN, in the whole scope of the non-LOCA safetyanalyses. Also the iSAM adopts the unique and automatic initialization and run tool, automatic steady-state initialization andsafety analysis tool (ASSIST), to enable unhandy designers to use the new design code RETRAN without difficulty. In thispaper, a brief overview of the iSAM is given, and the results of applying the iSAM to typical non-LOCA transients beingchecked during the reload design are reported. The typical non-LOCA transients selected are the single control element assemblywithdrawal (SCEAW) accident, the asymmetric steam generator transients (ASGT), the locked rotor (LR) accident, and bankCEA withdrawal (BCEAW) event. Comparison to current licensing results shows a close resemblance; thus, it reveals thatthe iSAM can be applied to the non-LOCA safety analysis of OPR1000 and APR1400 plants.

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