ANALISIS TERMOHIDROLIKA ELEMEN BAKAR PWR-1000 DALAM MATRIKS 2-2

ANALISIS TERMOHIDROLIKA ELEMEN BAKAR PWR-1000 DALAM MATRIKS 2  2. Telah dilakukan suatu analysis termohidrolika elemen bakar PWR-1000 dengan menggunakan 4 buah batang batang bahan bakar yang dimodelkan dalam matriks 2  2, yang dibedakan besar faktor radialnya, yaitu masing-masing 1,011 , 2,07 , 1,014 dan 1,021 yang di kelilingi oleh 9 kanal aliran. Dari hasil perhitungan menggunakan Code (program perhitungan komputer) COBRA IV-I dari versi AXP diperoleh temperatur kelongsong maksimum untuk batang bahan bakar ke 1, 2, 3, dan 4 masing-masing sebesar 650,0 , 658,8 , 652,3 dan 649,3 oF dan temperatur meat bahan bakar masing-masing sebesar 1698,0 , 2835,0 , 1704,3 dan 1709,1 oF, dan DNBR minimum 1,86 pada subkanal 3. Dengan batasan bahwa temperatur meat maksimum sebesar 5080 oF dan DNBR minimum sebesar 1,30, disimpulkan bahwa disain PLTN jenis PWR-1000 masih dalam batas keselamatan.

ABSTRACT

THERMALHYDRAULICS ANALYSIS OF PWR-1000 FUEL ELEMEN, IN MATRIKS 2  2. Thermalhydraulics analysis of PWR-1000 fuel elemen using 4 fuel pin rods in matrix 2  2 has been carried out. The model consists of 4 fuel pin rods in matrix 2  2 that surrounding by 9 flow subchannels, and different radial factors by 1.011 , 2.07 , 1.014 and 1.021, respectively. The calculation was done using COBRA IV-I code (computer program) AXP version, gave results the maximum cladding temperature for rod each 1, 2, 3 and 4, were 650.0 , 658.8 , 652.3 and 649.3 oF, respectively, and the maximum meat temperature were 1698.0 , 2835.0 , 1704.3 dan 1709.1 oF, respectively, and the minimum departure from nucleate boilling ration (DNBR) 1.86 in subchannel 3. By design limits that the maximum meat temperature was not over than 5080 oF and the minimum DNBR was not less than 1.30, said that the PWR-KSNP design was in the range of safety.