Radiological assessment of BWR recirculatory pipe replacement

Technical Report · Sat Feb 01 04:00:00 EST 1986

OSTI ID:5987084

Parkhurst, M A; Hadlock, D E; Harty, R; Pappin, J L

Replacement of primary recirculating coolant pipe in BWRs is a major effort that has been carried out at a number of nuclear generating stations. This report reviews the planned or actual pipe replacement projects at six sites: Nine Mile Point-1, Monticello, Cooper, Peach Bottom-2, Vermont Yankee, and Browns Ferry-1. It covers the radiological issues of the pipe replacement, measures taken to reduce doses to ALARA, estimated and actual occupational doses, and lessons learned during the various replacements. The basis for the decisions to replace the pipes, the methods used for preparation and decontamination, the removal of old pipe, and the installation of the new pipe are briefly described. Methods for reducing occupational radiation dose during pipe repairs/replacements are recommended. 32 refs., 12 figs., 17 tabs.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5987084
• Report Number(s): NUREG/CR-4494; PNL-5742; ON: TI86007669
• Country of Publication: United States
• Language: English

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MAINTENANCE
MEDICINE
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PIPES
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