Steam-Generator Dilute-Chemical-Cleaning Program: steam-generator chemical-cleaning project. Annual report for 1981

Technical Report · Wed Dec 01 00:00:00 EST 1982

DOI:https://doi.org/10.2172/6489976· OSTI ID:6489976

Simon, G. P.; Smoot, D. E.; Schneidmiller, D.

The dilute chemical cleaning program evaluates the feasibility of using low-concentration, regenerable solvents to maintain the secondary side of PWR steam generators in a clean condition. The experimental work carried out during this report period identified an acceptable dilute cleaning solvent formulated with 0.1 wt % each of citric acid, gluconic acid and ascorbic acid. Corrosion rates for the major steam generator construction materials can be limited to <1 mil/day when cinnamonitrile is included in the formulation at a concentration of 0.3 wt % or greater. Regeneration of partially depleted solvent was demonstrated in a recirculating system using strong acid cation exchangers in the H/sup +/ or NH/sub 4//sup +/ form. Solvent pH in the range of 3.4 to 3.8 was maintained during the cleaning operations with chemical additions. It was also demonstrated that mixed-bed resins in the H-OH form are capable of removing residual chemicals after cleaning and restoring coolant quality to a conductivity level of less than 10 ..mu..mhos.

• Research Organization: UNC Nuclear Industries, Inc., Richland, WA (USA)
• DOE Contract Number: AC02-79ET34015
• OSTI ID: 6489976
• Report Number(s): DOE/ET/34015-3; ON: DE83008261
• Resource Relation: Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
PWR TYPE REACTORS
STEAM GENERATORS
SURFACE CLEANING
CHEMICAL REACTIONS
PERFORMANCE TESTING
SOLVENTS
WATER CHEMISTRY
BOILERS
CHEMISTRY
CLEANING
REACTORS
SURFACE FINISHING
TESTING
VAPOR GENERATORS
WATER COOLED REACTORS
WATER MODERATED REACTORS
210200* - Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled