ABWR SAFETY SYSTEM ASSESSMENT FOR LOCA ANTICIPATION
Center for Nuclear Technology Assessment - BATAN
Email: igndjoko@batan.go.id
ABSTRACT
ABWR SAFETY SYSTEM ASSESSMENT FOR LOCA ANTICIPATION. Loss of coolant accident (LOCA) is the accident which is assumed as the event that initiated from pipe rupture of primary cooling system. One of the risk of LOCA is the increase of fuel cladding temperature that will destroy the integrity of fuel cladding and the release of fission product from the fuel. Emergency core cooling system (ECCS) on BWR has been designed to anticipate the accident such as LOCA. ECCS modification on ABWR is emphasized to improve the ECCS performance. ECCS of ABWR is designed on 3 independent division that operated simultaneously and be able to repair on line automatically until 72 hours without any action of operator. Internal pumps utilization as the recirculation pump make possible to reduce large break LOCA probability due to rupture of primary coolant piping. In this case, the accident risk which could not disparage is the breach that occurred in the High pressure Core Flooder (HPCF) system. In case of such accident occurred the reactor core can be maintain still submerged.
Keywords : Safety System, Loss of Coolant Accident, ABWR, ECCS, HPCF
Published : Proceeding "Seminar ke-III Teknologi dan Keselamatan PLTN Serta Fasilitas Nuklir", Serpong, 5-6 September 1995, ISSN No. : 0854-2910
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