The effect of chromates on IGSCC in BWR environments. Final report

Technical Report · Wed Jul 01 04:00:00 EDT 1992

OSTI ID:10167640

Licina, G J ^[1]

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1. Structural Integrity Associates, Inc., San Jose, CA (United States)

Chromate and conductivity spikes have been observed at some boiling water reactors which utilized hydrogen water chemistry during periods of isolation of the hydrogen injection equipment. The source of the chromates, their potential significance on resistance to intergranular stress corrosion cracking, and methods for control of chromate are discussed. Chromate does not appear to drive IGSCC, except at very high levels (i.e., parts per million). Rather, chromate is an artifact; a result of the more noble electrochemical potentials associated with the oxidizing conditions of normal BWR water chemistry or during interruptions to hydrogen injection at HWC plants.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (United States); Structural Integrity Associates, Inc., San Jose, CA (United States)
• Sponsoring Organization: Electric Power Research Inst., Palo Alto, CA (United States)
• OSTI ID: 10167640
• Report Number(s): EPRI-TR--100853; ON: UN92019227
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210100
36 MATERIALS SCIENCE
360105
BWR TYPE REACTORS
CHROMATES
CORROSION AND EROSION
CORROSIVE EFFECTS
INTERGRANULAR CORROSION
NICKEL BASE ALLOYS
PIPES
POWER REACTORS
NONBREEDING
LIGHT-WATER MODERATED
BOILING WATER COOLED
REACTOR COOLING SYSTEMS
STAINLESS STEELS
STRESS CORROSION
THERMAL CONDUCTIVITY
WATER CHEMISTRY