The HANARO reactor constructed from Jan. 1985 to April 1995, and a major utilization system, the Cold Neutron Research Facility was completed Nov. 2010. The cold neutron research facility consists of a Cold Neutron Source, a process system, a neutron guide and a Spectrometer. A moderator is utilized to transform thermal neutrons into cold neutrons. A moderator cell accommodates the moderator. The inner assembly contains an aluminum moderator cell connected to a stainless steel heat exchanger by a bi-metallic transition joint. An In-Pool Assembly is welded to this inner assembly and a double flexible pipe, and a vacuum chamber is inserted. After HANARO reactor shutdown, the in-pool assembly was installed at a cold neutron hole in the reactor pool. We confirmed a precise installation by using an underwater TV camera for a nuclear reactor inspection. In-pool assembly connected to double flexible pipe each system in the Cold Neutron Research Facility. After cold neutron research facility operated, the reliability of vacuum system, helium refrigerator system, gas blanket system and hydrogen system for maintenance was confirmed.

Abstract
 1. 서론
 2. 수조내기기의 설계 개념
 3. 수조내기기의 조립
 4. 수조내기기의 설치
  4.1 설치를 위한 초기 준비
  4.2 고정브라켓 및 장착플랜지 설치
  4.3 수조내기기 설치
 5. 수조내기기 유지관리
  5.1 냉중성자원 진공계통 점검
  5.2 냉중성자원 헬륨냉동계통 점검
  5.3 냉중성자원 수소계통 점검
  5.4 냉중성자원 가스블랭킷계통 점검
 6. 결론
 후기
 참고문헌

• 박국남(한국원자력연구원, 연구로기술개발단) | Kook-Nam Park
• 이용섭(한국원자력연구원, 하나로이용연구본부) | Young-Seab Lee
• 이번헌(한국원자력연구원, 하나로이용연구본부) | Bun-Hun Lee
• 김민수(한국원자력연구원, 하나로이용연구본부) | Min-Su Kim
• 권용세(한국원자력연구원, 연구로기술개발단) | Yong-Se Kwon