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Natural Cooling System Design and Forced Draft Test for Highly Radioactive Vitrified Waste Packages Storage Pits

[+] Author Affiliations
Isamu Ono, Masaki Jinba, Akira Ono, Kiyoyuki Nagai

Ishikawajima-Harima Heavy Industries Co., Ltd., Yokohama, Japan

Yoshiyuki Kaku

Ishikawajima Plant Engineering Co., Ltd., Yokohama, Japan

Tetsuro Okubo, Yoshitaka Mino, Masamichi Miyakawa

Japan Nuclear Fuel Ltd., Rokkasho-mura, Aomori-ken, Japan

Paper No. ICONE14-89813, pp. 971-979; 9 pages
  • 14th International Conference on Nuclear Engineering
  • Volume 1: Plant Operations, Maintenance and Life Cycle; Component Reliability and Materials Issues; Codes, Standards, Licensing and Regulatory Issues; Fuel Cycle and High Level Waste Management
  • Miami, Florida, USA, July 17–20, 2006
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-4242-8 | eISBN: 0-7918-3783-1
  • Copyright © 2006 by ASME


Vitrified Waste Storage Facilities, which store high-level radioactive vitrified waste packages with natural air-cooling system, have been constructed at JNFL’s Rokkasho Reprocessing Site. [1] Construction work for the first vitrified waste storage facility which stores the waste packages vitrified in Rokkasho site was completed in December in 2005. After the final inspection, a forced draft test was conducted to verify actual fluid resistance throughout the flow passage. The test results show that the measured pressure loss is less than 70Pa at design flow rate and that it has approximately 10% margin to the design value. This confirms that the facility has the adequate cooling performance.

Copyright © 2006 by ASME



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