Steam Generator Group Project. Task 6. Channel head decontamination

Technical Report · Wed Aug 01 04:00:00 EDT 1984

DOI:https://doi.org/10.2172/6474976· OSTI ID:6474976

Allen, R P; Clark, R L; Reece, W D

The Steam Generator Group Project utilizes a retired-from-service pressurized-water-reactor steam generator as a test bed and source of specimens for research. An important preparatory step to primary side research activities was reduction of the radiation field in the steam generator channel head. This task report describes the channel head decontamination activities. Though not a programmatic research objective it was judged beneficial to explore the use of dilute reagent chemical decontamination techniques. These techniques presented potential for reduced personnel exposure and reduced secondary radwaste generation, over currently used abrasive blasting techniques. Two techniques with extensive laboratory research and vendors prepared to offer commercial application were tested, one on either side of the channel head. As indicated in the report, both techniques accomplished similar decontamination objectives. Neither technique damaged the generator channel head or tubing materials, as applied. This report provides details of the decontamination operations. Application system and operating conditions are described.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6474976
• Report Number(s): NUREG/CR-3841; PNL-4712; ON: TI85000433
• Country of Publication: United States
• Language: English

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