PWR secondary water chemistry study
Several types of corrosion damage are currently chronic problems in PWR recirculating steam generators. One probable cause of damage is a local high concentration of an aggressive chemical even though only trace levels are present in feedwater. A wide variety of trace chemicals can find their way into feedwater, depending on the sources of condenser cooling water and the specific feedwater treatment. In February 1975, Nuclear Water and Waste Technology Corporation (NWT), was contracted to characterize secondary system water chemistry at five operating PWRs. Plants were selected to allow effects of cooling water chemistry and operating history on steam generator corrosion to be evaluated. Calvert Cliffs 1, Prairie Island 1 and 2, Surry 2, and Turkey Point 4 were monitored during the program. Results to date in the following areas are summarized: (1) plant chemistry variations during normal operation, transients, and shutdowns; (2) effects of condenser leakage on steam generator chemistry; (3) corrosion product transport during all phases of operation; (4) analytical prediction of chemistry in local areas from bulk water chemistry measurements; and (5) correlation of corrosion damage to chemistry variation.
- Research Organization:
- Nuclear Water and Waste Technology, San Jose, Calif. (USA)
- OSTI ID:
- 7293142
- Report Number(s):
- EPRI-NP-516; TRN: 78-000083
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CALVERT CLIFFS-1 REACTOR
STEAM GENERATORS
PRAIRIE ISLAND-1 REACTOR
PRAIRIE ISLAND-2 REACTOR
PWR TYPE REACTORS
SECONDARY COOLANT CIRCUITS
WATER CHEMISTRY
SURRY-2 REACTOR
TURKEY POINT-4 REACTOR
CORROSION
CORROSION PRODUCTS
RADIOACTIVITY TRANSPORT
BOILERS
CHEMICAL REACTIONS
COOLING SYSTEMS
ENRICHED URANIUM REACTORS
POWER REACTORS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
THERMAL REACTORS
VAPOR GENERATORS
WATER COOLED REACTORS
WATER MODERATED REACTORS
210200* - Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled