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Operational experience of water quality improvement accompanied by monitoring with on-line ion chromatograph

Abstract

Hamaoka Unit No.1 (BWR 540 MWe) of Chubu Electric Power Company, Inc. had experienced fuel failures caused by fuel cladding corrosion at the cycle 11 in 1990. This cladding corrosion was considered to be caused by a combination of cladding material susceptibility to corrosion and anomalous reactor water quality. Based on the intensive investigations on the causes of anomalous reactor water quality, several countermeasures were proposed to improve the reactor water quality for the subsequent cycles operation. As the results of countermeasures, reactor water quality of Hamaoka Unit No.1 in the cycle 12 became much better than that of any other previous cycles and neither failure nor accelerated corrosion was found in the subsequent annual inspection. As one of the countermeasures for water quality improvement, an on-line ion chromatograph has been installed on Hamaoka Unit No.1 to reinforce reactor water quality monitoring, that has enabled us to identify ion species in reactor water and to evaluate reactor water behaviour in detail. (author). 3 refs, 8 figs, 2 tab.
Authors:
Kobayashi, M; Maeda, K; [1]  Hashimoto, H; Ishibe, T; [2]  Usui, N; [3]  Osumi, K; [4]  Ishigure, K [5] 
  1. Toshiba Corp., Yokohama (Japan)
  2. Chubu Electric Power Co. Inc., Nagoya (Japan)
  3. Hitachi Engineering Co. Ltd., Ibaraki (Japan)
  4. Hitachi Ltd., Hitachi (Japan)
  5. Tokyo Univ. (Japan)
Publication Date:
Feb 01, 1997
Product Type:
Conference
Report Number:
IAEA-TECDOC-927; CONF-9310467-
Reference Number:
SCA: 210100; PA: AIX-28:034518; EDB-97:060643; SN: 97001775137
Resource Relation:
Conference: Technical committee meeting on influence of water chemistry on fuel cladding behaviour, Rez (Czech Republic), 4-8 Oct 1993; Other Information: PBD: Feb 1997; Related Information: Is Part Of Influence of water chemistry on fuel cladding behaviour. Proceedings of a technical committee meeting; PB: 499 p.
Subject:
21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS; WATER QUALITY; MODIFICATIONS; HAMAOKA-1 REACTOR; ION EXCHANGE CHROMATOGRAPHY; ON-LINE SYSTEMS; REACTOR MONITORING SYSTEMS; WATER CHEMISTRY
OSTI ID:
462434
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1011-4289; Other: ON: DE97622401; TRN: XA9743699034518
Availability:
INIS; OSTI as DE97622401
Submitting Site:
INIS
Size:
pp. 315-330
Announcement Date:

Citation Formats

Kobayashi, M, Maeda, K, Hashimoto, H, Ishibe, T, Usui, N, Osumi, K, and Ishigure, K. Operational experience of water quality improvement accompanied by monitoring with on-line ion chromatograph. IAEA: N. p., 1997. Web.
Kobayashi, M, Maeda, K, Hashimoto, H, Ishibe, T, Usui, N, Osumi, K, & Ishigure, K. Operational experience of water quality improvement accompanied by monitoring with on-line ion chromatograph. IAEA.
Kobayashi, M, Maeda, K, Hashimoto, H, Ishibe, T, Usui, N, Osumi, K, and Ishigure, K. 1997. "Operational experience of water quality improvement accompanied by monitoring with on-line ion chromatograph." IAEA.
@misc{etde_462434,
title = {Operational experience of water quality improvement accompanied by monitoring with on-line ion chromatograph}
author = {Kobayashi, M, Maeda, K, Hashimoto, H, Ishibe, T, Usui, N, Osumi, K, and Ishigure, K}
abstractNote = {Hamaoka Unit No.1 (BWR 540 MWe) of Chubu Electric Power Company, Inc. had experienced fuel failures caused by fuel cladding corrosion at the cycle 11 in 1990. This cladding corrosion was considered to be caused by a combination of cladding material susceptibility to corrosion and anomalous reactor water quality. Based on the intensive investigations on the causes of anomalous reactor water quality, several countermeasures were proposed to improve the reactor water quality for the subsequent cycles operation. As the results of countermeasures, reactor water quality of Hamaoka Unit No.1 in the cycle 12 became much better than that of any other previous cycles and neither failure nor accelerated corrosion was found in the subsequent annual inspection. As one of the countermeasures for water quality improvement, an on-line ion chromatograph has been installed on Hamaoka Unit No.1 to reinforce reactor water quality monitoring, that has enabled us to identify ion species in reactor water and to evaluate reactor water behaviour in detail. (author). 3 refs, 8 figs, 2 tab.}
place = {IAEA}
year = {1997}
month = {Feb}
}