Basket Retrieval Tool

Radiation Shielding Lifting Device for  
Nuclear Reactors

Innovative solutions are essential for addressing critical challenges in the nuclear industry. This radiation shielding lifting device has been designed to ensure the safe and efficient handling, removal, and storage of irradiated materials used in Molybdenum-99 production, while minimizing radiation exposure and maximizing operational safety.

The Challenge: 

Nuclear reactors used in Molybdenum-99 production require the safe removal and storage of highly irradiated baskets, or targets. This must be done while minimizing radiation exposure to workers. This process poses significant challenges in ensuring safety, secure storage, and efficient transportation, all within stringent operational constraints.

The Solution:

Unified Engineering developed a radiation shielding lifting device designed to address these challenges. The solution features a shielded all-steel cylinder with 5-5/8” thick walls, reducing radiation doses from Cobalt-60 sources by 99%. Incorporating ALARA (As Low As Reasonably Achievable) principles, the device minimizes Bremsstrahlung radiation through innovative gate design and the elimination of air gaps. The system includes a worm gear hand winch for precise handling, a gate for long-reach tool use, and a robust support structure that facilitates safe lifting and transportation. Unified Engineering collaborated closely with a nuclear engineering firm, analyzing operations, conducting shielding calculations, and optimizing the design for safety, efficiency, and manufacturability.

The Benefit:

The radiation shielding lifting device ensures the safe and efficient handling of irradiated targets while significantly reducing radiation exposure for workers. Its robust design allows for easy transport and secure storage, meeting the highest standards of operational safety. Unified Engineering’s comprehensive approach, from initial design to production, delivers a reliable and effective solution tailored to the critical needs of the nuclear industry.