Dilute chemical cleaning of PWR steam generators off-line cleaning process evaluation
This project evaluated the feasibility of using a low-concentration (approx. 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 primary objective was to develop a dilute process that could be safely applied at scheduled intervals, such as during normal refueling outages, to maintain a clean operating condition in the steam generator. The dilute chemical cleaning process developed in this project was demonstrated successfully on two model generators which were operated on faulted chemistry by DOE/CRC at Commonwealth's State Line Facility. Unit 5 was cleaned after 48 days of operation with 1% seawater fouling, and Unit 6 was cleaned after 112 days of operations with Lake Michigan water. This report describes work leading to the model generator cleaning demonstrations and provides details of the cleaning operation for each model steam generator.
- Research Organization:
- UNC Nuclear Industries, Inc., Richland, WA (USA)
- DOE Contract Number:
- AC02-79ET34015
- OSTI ID:
- 6837716
- Report Number(s):
- DOE/ET/34015-6; ON: DE84006506
- 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
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM ALLOYS
CLEANING
CORROSION DENTING
CORROSION PRODUCTS
DEFORMATION
IMPURITIES
INCONEL 600
INCONEL ALLOYS
IRON ALLOYS
MAINTENANCE
MECHANICAL STRUCTURES
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
PWR TYPE REACTORS
REACTOR MAINTENANCE
REACTORS
STEAM GENERATORS
SUPPORTS
SURFACE CLEANING
SURFACE FINISHING
TUBES
VAPOR GENERATORS
WATER CHEMISTRY
WATER COOLED REACTORS
WATER MODERATED REACTORS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
ALLOYS
BOILERS
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM ALLOYS
CLEANING
CORROSION DENTING
CORROSION PRODUCTS
DEFORMATION
IMPURITIES
INCONEL 600
INCONEL ALLOYS
IRON ALLOYS
MAINTENANCE
MECHANICAL STRUCTURES
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
PWR TYPE REACTORS
REACTOR MAINTENANCE
REACTORS
STEAM GENERATORS
SUPPORTS
SURFACE CLEANING
SURFACE FINISHING
TUBES
VAPOR GENERATORS
WATER CHEMISTRY
WATER COOLED REACTORS
WATER MODERATED REACTORS