US 12,217,881 B2
Storage and transport cask for nuclear waste
Krishna P. Singh, Jupiter, FL (US)
Assigned to HOLTEC INTERNATIONAL
Filed by HOLTEC INTERNATIONAL, Camden, NJ (US)
Filed on Aug. 18, 2023, as Appl. No. 18/451,885.
Application 18/451,885 is a continuation of application No. 17/831,809, filed on Jun. 3, 2022, granted, now 11,769,602.
Application 17/831,809 is a continuation of application No. 17/181,439, filed on Feb. 22, 2021, granted, now 11,373,775, issued on Jun. 28, 2022.
Claims priority of provisional application 62/979,640, filed on Feb. 21, 2020.
Prior Publication US 2024/0029906 A1, Jan. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G21F 5/12 (2006.01)
CPC G21F 5/12 (2013.01) 13 Claims
OG exemplary drawing
 
1. A method for locking a radioactive waste storage cask comprising:
positioning a closure lid on a cask body over an opening leading into an internal storage cavity;
inserting a peripheral array of first locking protrusions on the lid between and through a peripheral array of second locking protrusions disposed on the cask body around the opening;
slideably moving the first locking protrusions beneath the second locking protrusions; and
frictionally engaging the first locking protrusions with the second locking protrusions;
wherein the lid cannot be removed from the cask body.