Health physics support for thermal shield repair at Connecticut Yankee
Journal Article
·
· Radiation Protection Management; (United States)
OSTI ID:5243794
- Connecticut Yankee Atomic Power Co., East Hampton, CT (United States)
This article describes the radiation and safety controls used by Connecticut Yankee Atomic Power Company to support underwater repair work on the Haddam Neck Plant's core barrel thermal shield. The work was conducted by divers in the reactor cavity using remote tools and protected by a specially-constructed physical barrier that restricted their movements to a carefully defined and thoroughly surveyed area. A unique dosimetry test rig was used to determine the dose rate profiles within the work areas, and all underwater survey equipment was qualified against personnel dosimetric devices. Underwater operations were monitored and controlled by remote means (video surveillance and dosimetry telemetry), and health physics technicians were rotated through job coverage to avoid complacency and maximize training opportunities. A single, hot particle event occurred during one dive, but this was identified almost immediately and controlled to prevent excessive exposure to the diver.
- OSTI ID:
- 5243794
- Journal Information:
- Radiation Protection Management; (United States), Journal Name: Radiation Protection Management; (United States) Vol. 5:5; ISSN 0740-0640; ISSN RPMAE
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220400 -- Nuclear Reactor Technology-- Control Systems
220900* -- Nuclear Reactor Technology-- Reactor Safety
560101 -- Biomedical Sciences
Applied Studies-- Radiation Effects-- Dosimetry & Monitoring-- (1992-)
560180 -- Radiation Protection Procedures-- (1992-)
61 RADIATION PROTECTION AND DOSIMETRY
CONNECTICUT YANKEE REACTOR
DOSIMETRY
ENRICHED URANIUM REACTORS
MECHANICAL STRUCTURES
POWER REACTORS
POWERED SUPPORTS
PWR TYPE REACTORS
RADIATION PROTECTION
REACTOR COMPONENTS
REACTORS
REPAIR
SHIELD SUPPORTS
SHIELDS
SUPPORTS
SURVEILLANCE
SURVEYS
THERMAL REACTORS
THERMAL SHIELDS
UNDERWATER OPERATIONS
WATER COOLED REACTORS
WATER MODERATED REACTORS
220400 -- Nuclear Reactor Technology-- Control Systems
220900* -- Nuclear Reactor Technology-- Reactor Safety
560101 -- Biomedical Sciences
Applied Studies-- Radiation Effects-- Dosimetry & Monitoring-- (1992-)
560180 -- Radiation Protection Procedures-- (1992-)
61 RADIATION PROTECTION AND DOSIMETRY
CONNECTICUT YANKEE REACTOR
DOSIMETRY
ENRICHED URANIUM REACTORS
MECHANICAL STRUCTURES
POWER REACTORS
POWERED SUPPORTS
PWR TYPE REACTORS
RADIATION PROTECTION
REACTOR COMPONENTS
REACTORS
REPAIR
SHIELD SUPPORTS
SHIELDS
SUPPORTS
SURVEILLANCE
SURVEYS
THERMAL REACTORS
THERMAL SHIELDS
UNDERWATER OPERATIONS
WATER COOLED REACTORS
WATER MODERATED REACTORS