Steam-generator dilute chemical-cleaning program. Steam-generator chemical-cleaning project. Annual report, program start through 1980
Vertical U-tube steam generators in Pressurized Water Reactors (PWRs) operating an All Volatile Treatment (AVT) secondary chemistry have experienced corrosion problems, particularly denting and sludges. The studies reported evaluate the feasibility of using a low-concentration (0.5 wt%) chemical cleaning process to remove corrosion product deposits from steam generator surfaces and magnetite from tube-to-support plate crevices of PWR steam generators. The process potentially may be applied at schedule intervals, such as during normal refueling outages, to maintain a steam generator in clean operating condition. This report describes the results of testing to evaluate the effectiveness of several chelant acids for dissolving steam generator sludges and crevice magnetite. Corrosion of carbon steel by the chelant acids and the effects of various inhibitors are evaluated. The effectiveness of ion-exchange regeneration of several chelant-based solvents is also addressed. 10 figures, 12 tables.
- Research Organization:
- UNC Nuclear Industries, Inc., Richland, WA (USA)
- DOE Contract Number:
- AC02-79ET34015
- OSTI ID:
- 6978807
- Report Number(s):
- DOE/ET/34015-1; ON: DE83001708
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
ALLOYS
BOILERS
CARBON STEELS
CHALCOGENIDES
CHELATING AGENTS
CLEANING
CORROSION DENTING
CORROSION PRODUCTS
DEFORMATION
ENRICHED URANIUM REACTORS
FEASIBILITY STUDIES
INSPECTION
ION EXCHANGE
IRON ALLOYS
IRON BASE ALLOYS
IRON COMPOUNDS
IRON ORES
IRON OXIDES
MAGNETITE
MINERALS
ORES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
POWER REACTORS
PWR TYPE REACTORS
REACTORS
REGENERATION
REMOVAL
SLUDGES
SOLVENTS
STEAM GENERATORS
STEELS
THERMAL REACTORS
TRANSITION ELEMENT COMPOUNDS
VAPOR GENERATORS
WATER COOLED REACTORS
WATER MODERATED REACTORS
ZION-1 REACTOR
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
ALLOYS
BOILERS
CARBON STEELS
CHALCOGENIDES
CHELATING AGENTS
CLEANING
CORROSION DENTING
CORROSION PRODUCTS
DEFORMATION
ENRICHED URANIUM REACTORS
FEASIBILITY STUDIES
INSPECTION
ION EXCHANGE
IRON ALLOYS
IRON BASE ALLOYS
IRON COMPOUNDS
IRON ORES
IRON OXIDES
MAGNETITE
MINERALS
ORES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
POWER REACTORS
PWR TYPE REACTORS
REACTORS
REGENERATION
REMOVAL
SLUDGES
SOLVENTS
STEAM GENERATORS
STEELS
THERMAL REACTORS
TRANSITION ELEMENT COMPOUNDS
VAPOR GENERATORS
WATER COOLED REACTORS
WATER MODERATED REACTORS
ZION-1 REACTOR