Dry Canister Storage System Inspection Platforms
Robotic Technologies of Tennessee and the Electric Power Research Institute Develop Dry Canister Storage System Inspection Systems
RTT and the Electric Power Research Institute (EPRI) have developed miniature remote operated vehicles (ROVs) for inspection on dry canister storage systems. The systems are designed to target specific manufacturer’s casks.
A sampling of the ROVs is presented below.
Magnet DCSS NDE Inspection Robots
Suction DCSS NDE Inspection Robots
Robotic Technologies of Tennessee Develops Miniature Non-Destructive Testing Equipment For Nuclear Industry
EPRI and other industry stakeholders have performed evaluations that show that under certain conditions, Dry Canister Storage System (DCSS) are potentially susceptible to chloride-induced stress corrosion cracking. Stakeholders include the Nuclear Regulatory Commission (NRC), National Laboratories (e.g., Los Alamos National Laboratory, Idaho National Laboratory, etc.), DCSS manufacturers and nuclear power providers.
Due to the lack of a permanent repository facility or the delay of one opening, DCSSs will be in use for longer periods than their original licensed design life. In most cases, DCSS’s sit on an independent spent fuel storage facilities (ISFSIs) or moved to an interim site. With this new time frame in mind, the NRC must license and renew licenses at these locations. To do so, the NRC will require that the facilities perform inspections according to codes and standards that are in the process of being developed. Currently, there are no generally accepted (and preferable) audit protocols or aging canister management standards in place that account for current realities.
ISFSIs are located throughout the Unites States.
EPRI is addressing a variety of ways to support DCSS inspections. In 2014, EPRI started work with Robotic Technologies of Tennessee (RTT) on robotic delivery systems for NDE equipment. Specifically, EPRI and RTT are developing small remote operated vehicles to perform NDE of DCSS by accessing DCSS through ventilation shafts. EPRI and RTT have contracts and plans to continue development, testing, and deployment through 2018.
Independent spent fuel storage facilities exist throughout the United States and around the world. United States locations of IFSI’s can be found here.