Recent observations in steam generators at the Bruce Nuclear Power Development

Conference · Thu Dec 31 04:00:00 EST 1992

OSTI ID:49056

King, P J; Gonzalez, F ^[1]

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1. Ontario Hydro Research Division, Toronto (Canada)

Localised corrosion of steam generator tubing has been observed at the Bruce Nuclear Power Development, Tubes at Bruce {open_quotes}A{close_quotes} are fouled by thick deposits and there is considerable accumulation of sludge on the tubesheets. Shallow non-uniform corrosion and intergranular attack has occurred beneath the tubesheet sludge pile. No corrosion has been observed beneath general tube fouling. Tubes at Bruce {open_quotes}B{close_quotes} are slightly fouled with thin deposits and there is little accumulation of sludge on the tubesheet. Shallow non-uniform corrosion and pitting has occurred beneath both the shallow sludge pile and the general tube fouling. Corrosion is not confined to the vicinity of the tubesheet, but extends to the top of the tube bundle. Lake water and chronic oxygen in-leakage are implicated as the major contributors to aggressive conditions, with acid excursions finally causing corrosion. Different physical and electrochemical conditions explain the different corrosion responses at the two stations.

• OSTI ID: 49056
• Report Number(s): CONF-910808--
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
36 MATERIALS SCIENCE
BRUCE-1 REACTOR
BRUCE-2 REACTOR
BRUCE-3 REACTOR
BRUCE-4 REACTOR
BRUCE-5 REACTOR
BRUCE-6 REACTOR
BRUCE-7 REACTOR
BRUCE-8 REACTOR
CORROSION
INCONEL 600
SECONDARY COOLANT CIRCUITS
STEAM GENERATORS
TUBES
WATER CHEMISTRY