Evaluation of Millstone-2 steam generator chemical decontamination
Technical Report
·
OSTI ID:5952491
The steam generator channel heads at Millstone-2 were decontaminated prior to carrying out extensive maintenance work in 1983. Isotopic gamma ray measurements were made of the inner channel head surfaces before and after the decontamination to evaluate the effectiveness of the process. The Combustion Engineering/Kraftwerk Union chemical decontamination, by itself, provided a decontamination factor ranging from 2.7 to 6.6 for the various steam generator surfaces. The corresponding average dose rate reduction factor, based on gross-gamma radiation surveys, was approximately 1.5 to 2.5. Following the chemical treatment, high pressure water flushing reduced the radiation levels still further, to an average overall dose reduction factor of 5.3 to 7.2.
- Research Organization:
- Radiological and Chemical Technology, Inc., San Jose, CA (USA)
- OSTI ID:
- 5952491
- Report Number(s):
- EPRI-NP-3795; ON: TI85920155
- 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
BOILERS
CLEANING
DECONTAMINATION
DOSE RATES
ELECTROMAGNETIC RADIATION
ENRICHED URANIUM REACTORS
EVALUATION
GAMMA RADIATION
IONIZING RADIATIONS
MILLSTONE-2 REACTOR
MONITORING
POWER REACTORS
PWR TYPE REACTORS
RADIATION MONITORING
RADIATIONS
REACTORS
STEAM GENERATORS
VAPOR GENERATORS
WATER COOLED REACTORS
WATER MODERATED REACTORS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
BOILERS
CLEANING
DECONTAMINATION
DOSE RATES
ELECTROMAGNETIC RADIATION
ENRICHED URANIUM REACTORS
EVALUATION
GAMMA RADIATION
IONIZING RADIATIONS
MILLSTONE-2 REACTOR
MONITORING
POWER REACTORS
PWR TYPE REACTORS
RADIATION MONITORING
RADIATIONS
REACTORS
STEAM GENERATORS
VAPOR GENERATORS
WATER COOLED REACTORS
WATER MODERATED REACTORS