DEMOLISHING A COLD-WAR-ERA FUEL STORAGE BASIN SUPERSTRUCTURE LADEN WITH ASBESTOS
The K East (KE) Basin facilities are located near the north end of the Hanford Site's 100 K area. The facilities were built in 1950 as part of the KE Reactor complex and constructed within 400 meters of the Columbia River, which is the largest river in the Pacific Northwest and by volume the fourth largest river in the United States. The basin, located adjacent to the reactor, was used for the underwater storage of irradiated nuclear fuel discharged from the reactor. The basin was covered by a superstructure comprising steel columns and beams, concrete, and cement asbestos board (CAB) siding. The project's mission was to complete demolition of the structure over the K East basin within six months of tumover from facility deactivation activities. The demolition project team implemented open-air demolition techniques to demolish the facility to slab-on-grade. Several innovative techniques were used to control contamination and maintain contamination control within the confines of the demolition exclusion zone. The techniques, which focused on a defense-in-depth approach, included spraying fixatives on interior and exterior surfaces before demolition began; applying fixatives; misting using a fine spray of water during demolition; and demolishing the facility systematically. Another innovation that aided demolition was to demolish the building with the non-friable CAB remaining in place. The CAB siding covered the exterior of the building, portions of the interior walls, and was an integral part of the multiple layered roof. The project evaluated the risks involved in removing the CAB material in a radiologically contaminated environment and determined that radiological dose rates and exposure to radiological contamination and industrial hazards would be significantly reduced by removing the CAB during demolition using heavy equipment. The ability to perform this demolition safely and without spreading contamination (radiological or asbestos) demonstrates that similar open-air demolition ofcontaminated structures can be performed successfully.
- Research Organization:
- Hanford Site (HNF), Richland, WA (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Environmental Management (EM)
- DOE Contract Number:
- DE-AC06-08RL14788
- OSTI ID:
- 943304
- Report Number(s):
- HNF-39052-FP Rev 0; TRN: US0903043
- Resource Relation:
- Conference: WM09 WASTE MANAGEMENT SYMPOSIA INC 03/01/2008 THRU 03/05/2009 PHOENIX AZ
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
ASBESTOS
BEAMS
BUILDINGS
CEMENTS
COLUMBIA RIVER
CONTAMINATION
CONTROL
DEACTIVATION
DEMOLITION
DOSE RATES
ENVIRONMENT
EQUIPMENT
FUELS
HAZARDS
HANFORD RESERVATION
INTEGRALS
MATERIALS
MEETINGS
METERS
NUCLEAR FUELS
REACTORS
RIVERS
SPRAYS
STEELS
STORAGE
SURFACES
UNDERWATER
VOLUME
WALLS
WASTE MANAGEMENT
WATER