Primary Inventor: Stephen J. Agace
Contributing Inventor(s): Krishna P. Singh
Date of Patent Issuance: February 23, 2016
Status: Granted
Jurisdiction: US
Assignee: Holtec International, Inc.
Equipment Type: HI-STAR Transport Cask
Docket Number: HOL-007
Publication Number: US 2015/0287489 A1
Application Number: 14/264,843
Patent Number(s)US 9,269,464 B2

Related U.S. Application Data:

  • Continuation of Application No. 11/772,620 filed on June 2, 2007, previously published as US 2008/0031397 A1, now Patent No. US 8,712,001 B2.
  • Patent No. US 8,548,112 B2 issued on October 1, 2013, previously published as US 2008/0031396A1 on February 7, 2008 under Application No. 11/772,610.
  • Publication No. US 2008/0084958 A1 published on April 10, 2008.

Foreign Patent (s):  KR 10-1123652

Abstract: An apparatus, system and method for storing high level radioactive waste. In one aspect, the invention is a specially designed ring-like structure for providing neutron and gamma radiation shielding for high level radioactive materials that produce residual heat. In another aspect, the invention is an apparatus for storing radioactive waste comprising a plurality of the ring-like structures arranged in a stacked assembly that completely surrounds an internal containment boundary. Collars can be provided at the ring-to-ring interfaces. The ring-like structures can have specially geometrically designed and/or arranged voids for receiving neutron absorbing materials that completely surrounds the containment boundary with the neutron shielding material.