Replacement of diffusers on JRR-3 secondary cooling tower
- 1. Japan Atomic Energy Agency, Nuclear Science Research Inst., Tokai, Ibaraki (Japan)
Description
The secondary cooling tower of JRR-3 is a facility for dissipating/cooling the heat generated in the reactor core by receiving it via heat exchanger, and the secondary cooling tower diffuser is a facility to efficiently dissipate this heat to atmosphere. Since this equipment had passed 25 years since its establishment, and the corrosion due to aging deterioration was significant, the updating of the equipment was planned aimed at contributing to long-term safety and the stable operation of JRR-3. This paper describes the overview of entire reactor cooling system facility, and the inspection maintenance and performance of the secondary cooling tower. As the improvements in the updating of the secondary cooling tower diffuser, this paper describes the consideration of paints and quality of the base material, and the improvement of inspection port and base frame opening. It also reports the fabrication of these devices, dismantling of existing equipment, and installation of the new diffuser. (A.O.)
Additional details
Publishing Information
- Imprint Title
- Report of workshop on operation, management and improvement of research reactors, Yayoi Research Group FY2013
- Imprint Pagination
- 116 p.
- Journal Page Range
- p. 11.1-11.13
- Report number
- UTNL-R--0486
Conference
- Title
- Workshop on operation, management and improvement of research reactors, Yayoi Research Group FY2013
- Dates
- 18 Mar 2014
- Place
- Tokai, Ibaraki (Japan)
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 47053424
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Conference, Non-conventional Literature
- Descriptors DEI
- AGING; APERTURES; BLOWERS; CONSTRUCTION; COOLANTS; COOLING TOWERS; DIFFUSERS; INSPECTION; JRR-3 REACTOR; PAINTS; REACTOR MAINTENANCE; SECONDARY COOLANT CIRCUITS; THERMAL EFFLUENTS
- Descriptors DEC
- COATINGS; COOLING SYSTEMS; ENERGY SYSTEMS; HEAVY WATER COOLED REACTORS; HEAVY WATER MODERATED REACTORS; IRRADIATION REACTORS; ISOTOPE PRODUCTION REACTORS; MAINTENANCE; MATERIALS TESTING REACTORS; NATURAL URANIUM REACTORS; OPENINGS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; RESEARCH AND TEST REACTORS; RESEARCH REACTORS; TANK TYPE REACTORS
Optional Information
- Notes
- 6 figs., 6 tabs., 15 photos