Containment Vessel Closure Mechanism with Simplified User Torque Requirements

Containment Vessel Closure Mechanism with Simplified User Torque RequirementsJ. P. Flach, P. S. Blanton, K. R. EberlSavannah River National LaboratoryThis study investigates the feasibility of a Type B radioactive material package containment vessel closure withsimplified user torque requirements. This innovative design eliminates the complicated torqueing patterns anddifficult-to-maintain calibrated tools that are often required in traditional bolted closures. The closure design featuresa notched lid to limit rotational scoring of the seal and a threaded locking ring to provide positive closure on the lid.Each vessel is match drilled during fabrication and secured with a spring pin to guarantee that clamping forcerequirements are consistently met. This innovative design streamlines package operations and enables users to utilizethe containment vessel without calibrated tools.