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하나로 핵연료 시험루프 주냉각수 계통의 유량제어에 대한 유동해석
박용철(Young-Cheol Park),이용섭(Yong-Sub Lee),지대영(Dae-Yong Chi) 한국유체기계학회 2008 유체기계 연구개발 발표회 논문집 Vol.2008 No.-
A nuclear fuel test loop (after below, FTL) is installed in the IR1 of an irradiation hole in NANARO far testing the neutron irradiation characteristics and thermo hydraulic characteristics of a fuel loaded in a light water power reactor or a heavy water power reactor. There is an in-pile section (IPS) and an out-pile section (OPS) in this test loop. When HANARO is operated normally, the fuel loaded into the IPS has a nuclear reaction heat generated by a neutron irradiation, To remove the generated heat and to maintain the operation conditions of the test fuel, a main cooling water system (MCWS) is installed in the OPS of the FTL. The MCWS is composed of a main cooler, a pressurizer, two circulation pumps. a main heater, an interconnection pipe line and instruments. The interconnection pipeline is a closed loop which is connected to an inlet and an outlet of the IPS respectively. The MCWS is under a cold function test during a start-up period. This paper describes the system flow network analysis results of the flow control of a main cooling water system in the HANARO fuel test loop. It was confirmed through the results that the flow was met the system design requirements.
박용철(Young Chul Park),윤현기(Hyun-Gi Yoon),서경우(Keyoung-Woo Seo),지대영(Dae-Young Chi),윤주현(Ju-Hyeon Yoon) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
In nuclear power plant, a reactor cooling system has maintained high-Reynolds-number above 10E+7 to cool a heat generated by the reactor. To simulate flow characteristics of systems or components which are installed in the system, it is necessary a high-Reynolds-number flow simulation system. This paper describes the composition of the high-Reynolds-number flow simulation system and the results of flow network analysis for the system. It was confirmed through the analysis results that the system minimizes flow velocity variation to reduce pressure drop and that the test section maintains a high-Reynolds-number above 10E+07.
핵연료시험설비의 첨두핵연료피복재온도에 대한 운전변수의 영향
박수기(Su-Ki Park),지대영(Dae-Young Chi),이정영(Chung-Young Lee),김학노(Hak-Roh Kim) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11
The fuel test loop of HANARO has been modeled with MARS code to predict the peak cladding temperature (PCT) which is one of the design criteria for the design basis accidents. The PCTs have been calculated in the various operation parameters such as mass flow rate, coolant temperature, system pressure, the thermal power of test fuel, and the valves of safety function. In case of the room 1 LOCA the PCT increases with the increase of the thermal power, the coolant temperature, and the stroke time of the cold leg loop isolation valves as compared with that calculated in the design operation condition. However the effect of the stroke times of the safety injection valves and the depressurization valves on the PCT is negligible.
박국남(Kook Nam Park),이정영(Chung Young Lee),지대영(Dae Young Chi),박수기(Su Ki Park),심봉식(Bong Sik Shim),안성호(Sung Ho Ahn),김학노(Hark Rho Kim),이종민(Jong Min Lee) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
FTL(Fuel Test Loop) is a facility that confirms performance of nuclear fuel at a similar irradiation condition with that of nuclear power plant. FTL consists of In-Pile Test Section (IPS) and Out-Pile System (OPS). FTL construction work began on August, 2006 and ended on March, 2007. During Construction, ensuring the worker's safety was the top priority and installation of the FTL without hampering the integrity of the HANARO was the next one. Task Force Team was organized to do a construction systematically and the communication between members of the task force team was done through the CoP(community of Practice) notice board provided by the Institute. The installation works were done successfully overcoming the difficulties such as on the limited space, on the radiation hazard inside the reactor pool, and finally on the shortening of the shut down period of the HANARO. Without a sweet of the workers of the participating company of HEC(Hyundae Engineering Co, Ltd), HDEC(HyunDai Engineering & Construction Co. Ltd), equipment manufacturer, and the task force team, it is not possible to install the FTL facility within the planned shutdown period. The Commissioning of the FTL is on due to check the function and the performance of the equipment and the overall system as well. The FTL shall start operation with high burn up test fuels in early 2008 if the commissioning and licensing progress on schedule.
연구용 원자로의 다양한 운전범위에 따른 일차계통펌프 설계
서경우(Kyoungwoo Seo),윤현기(Hyungi Yoon),지대영(Dae-young Chi),윤주현(Juhyeon Yoon) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
A design of a primary cooling system, which removes the heat generated from the core, is dependent on a purpose of a research reactor. A reactor can require variable operating ranges for the primary cooling system. To operate the variable operating range, the primary cooling pump is designed with an inverter or a control valve in the system. The system pressure losses are calculated by the analytic and the numerical methods for the required flow rates estimated from the required core powers and temperature differences. It can be designed that the pump curve is moved by the rpm control with an inverter for the variable pump operating range. If a control valve is installed in the system, a pump curve can be used for the variable range.
박국남(Kook Nam Park),심봉식(Bong Shick Sim),지대영(Dae Young Chi),안성호(Seong Ho Ahn),박수기(Su Ki Park),이종민(Jong Min Lee),이정영(Chung Young Lee),유성연(Seong Yeon Yoo) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11
As a facility to examine general performance of nuclear fuel under irradiation condition in HANARO, Fuel Test Loop(FTL) has been developed which can accommodate 3 fuel pins at the core irradiation hole(IR1 hole) taking consideration user's test requirement. 3-Pin FTL consists of In-Pile Test Section (IPS) and Out-of- Pile System (OPS). Test condition in IPS such as pressure, temperature and the water quality, can be controlled by OPS. 3-Pin FTL Conceptual design was set up in 2001 and had completed detail design including a design requirement and basic piping & instrument diagram (P&ID) in 2004. The safety analysis report was prepared and submitted in early 2005 to the regulatory body(KINS) for review and approval of FTL. In 2005, the development team is going to purchase and manufacture hardware and make a contract for construction work. In 2006, the development team is going to install an FTL system performance test shall be done as a part of commissioning. After a 3-Pin FTL development which is expected to be finished by the 2007, FTL will be used for the irradiation test of the new PWR-type fuel and the usage of HANARO will be enhanced.