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신규 실험설비 운전으로 인한 하나로 연구용 원자로의 운영 신뢰도 변화 분석
정환성(Hoan Sung Jung),임인철(In Cheol Lim) 한국신뢰성학회 2010 신뢰성응용연구 Vol.10 No.1
The HANARO nuclear research reactor had been operated successfully and smoothly up to the year 2008 since its first year of instability in year 1995 just after the completion of construction. But the reliability of the reactor has been degraded from the year 2009 due to new experimental facilities such as Feul Test Loop(FTL) and Cold Neutron Source(CNS) which were installed in the HANARO plant. It turned out that these new facilities contributed unexpected stoppage of the plant. This paper describes causes of stoppage and suggestions to improve the reliability of the plant.
박용철(Young-Chul Park),이용섭(Young-Sub Lee),김양곤,정환성(Hoan-Sung Jung),임인철(In-Chul Lim) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
HANARO, an open-tank-in-pool type research reactor of 30 MWth power in Korea, has been operating normally since its initial criticality in February, 1995. For the last about ten years, A cooling tower of a secondary cooling system has been operated normally in HANARO. Last year, the cooling tower has been overhauled for preservative maintenance including fills, eliminators, wood support, water distribution system, motors, driving shafts, gear reducers, basements, blades and etc. This paper describes the results of the overhaul. As results, it is confirmed that the cooling tower maintains a good operability through a filed test. And a cooling capability will be tested when a wet bulb temperature is maintained about 28 ℃ in summer and the reactor is operated with the full power.
하나로 비상보충수의 노심 주입유량 시험 결과에 대한 고찰
박용철(Yong-Chul Park),이용섭(Yong-Sub Lee),최영산(Young-San Choi),정환성(Hoan-Sung Jung),임인철(In-Cheol Lim) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
When the water level of the reactor pool descends to an extremely low level due to a loss of reactor pool water accident in HANARO, a multi-purpose research reactor of a 30 MWth, the emergency water stored in the tank should be fed to the core by a gravity force. Last year, the reactor pool water was temporarily transferred to the emergency cooling water storage tank. And the water level came down to EL 77.5 m, 0.4 m above the extremely low level to install the in-pile section of a Fuel Test Loop in the reactor core. When the water was re-transferred into the reactor pool, an emergency water injection test was performed. This paper describes the test results and a consideration of the results. It was confirmed through the test that the injection flow rate was maintained above the design injection flow rate by setting the flow control valve at 3.5 turns to a partially open position.