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U-DEC
U-DEC
The document introduces the U-DEC, an underwater decontamination robot developed by Westinghouse for nuclear reactor pools. It addresses the inefficiencies of traditional manual decontamination methods by offering a more time- and cost-effective solution that aligns with the ALARA (As Low As Reasonably Achievable) objective.
The U-DEC is applicable to various reactor types, including boiling water reactors (BWR), pressurized water reactors (PWR), and vodovodyanoi energetichesky reactory (VVER). It features two flotation bodies for walls and floors, individually driven decontaminating rollers, and an integrated suction pump. The robot can operate in recirculation mode or connect to the plant's filtration system.
The U-DEC can decontaminate a reactor pool in approximately one day with a single operator, removing about 95% of surface contamination. It significantly reduces radiation exposure to personnel by allowing decontamination before pool drainage.
- Dimensions: 1050 mm (length) x 650 mm (width) x 630 mm (height)
- Weight: 65 kg in air, 10 kg in water
- Pump capacity: Up to 1200 L/min
- Movement speed: Up to 0.4 m/s
- Power options: 400V, 50Hz or 480V, 60Hz with transformer
- Water level residue: Cleaned >80% below 60 kBq/m²
- Pool wall: Cleaned >90% below 70 kBq/m²
- Pool bottom: Cleaned 3160 kBq/m²
The U-DEC has been successfully implemented in nuclear power plants across Europe and the U.S., demonstrating its effectiveness and reliability.
Weda Robotics, Wedavägen 4A, 152 42, Södertälje, Sweden. Tel: +46 8 550 325 50, Web: www.wedarobotics.com, Email: [email protected]
Catalog excerpts
U-DEC Reactor tanks and Nuclear Plants The traditional procedure to access the reactor core during refueling is to first drain the reactor pool and then manually decontaminate the surface. This procedure is both time consuming and it generates unnecessary dose to personnel. Therefore, Westinghouse developed the underwater decontamination robot, U-DEC. Pool decontamination with U-DEC is time- and costefficient and an effective way towards meeting the as low as reasonably achievable (ALARA) objective. Description The Westinghouse U-DEC is engineered for the nuclear industry and designed for all types of steel-lined pools in boiling water reactors (BWR), pressurized water reactors (PWR), and vodovodyanoi energetichesky reactory (VVER). U-DEC allows the plant operator to decontaminate the reactor pool, walls, and floor surface before draining it. This saves both time and dose to personnel. It has two different floatation bodies (walls and floor), which are quick and easy to shift. It also has two individually driven decontaminating rollers, which enable easy cleaning of the surfaces. The integrated suction pump evacuates water together with loosened particles. U-DEC may be operated in a recirculation mode or by connecting the effluent hose to the plant’s own filtration system. With the Westinghouse U-DEC, a reactor pool can be decontaminated in approximately one day, by only one operator, and remove approximately 95 percent of surface contamination. U-DEC has been successfully delivered and used in nuclear power plants in both Europe and the U.S. Web: www.wedarobotics.com mail: [email protected] MADE IN SWED
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WEDAExperience U-DEC has been successfully delivered and used in nuclear power plants in both Europe and the U.S. Cleaning unit Control box Technical data CONTACT Wedavagen 4A, 152 42, Sodertalje Web: www.wedarobotics.com mail: [email protected] MADE IN SWEDEN
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