Modifying steam generator corrosion behavior via chemical cleaning

Journal Article · Sat Dec 31 04:00:00 EST 1994 · Transactions of the American Nuclear Society

OSTI ID:89222

Sweeney, K; Neese, K

A steam generator chemical cleaning program was conducted in Palo Verde nuclear generating station (PVNGS) units 2 and 3 in 1994. This effort represented the first full-bundle chemical cleaning of a recirculating steam generator in the United States. The objectives of the process were: (1) to remove deposits in the upper bundle regions, which were identified by eddy-current analysis and linked to a free-span outside-diameter stress corrosion cracking (ODSCC) condition; (2) to remove tube scale deposits that interfere with heat transfer and may contain undesirable contaminants; (3) to remove deposits from the surface of the tube sheet and the flow distribution plate; and (4) to remove deposits from the drilled hole crevices in the FDP, which may be contributing to low recirculation ratios and upper bundle transition boiling. The Electric Power Research Institute/Steam Generator Owners` Group low-temperature process, modified to include {open_quotes}crevice cleaning{close_quotes} and {open_quotes}passivation{close_quotes} steps, was selected as the best method. Babock & Wilcox Nuclear Technologies was selected as the vendor.

• OSTI ID: 89222
• Report Number(s): CONF-941102--
• Journal Information: Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 71; ISSN 0003-018X; ISSN TANSAO
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
36 MATERIALS SCIENCE
CLEANING
CORROSION
DEPOSITS
FOULING
MAGNETITE
PALO VERDE-2 REACTOR
PALO VERDE-3 REACTOR
REMOVAL
STEAM GENERATORS