Method and Apparatus for Dehydrating High Level Waste Based on Dew Point Temperature Measurement

Primary Inventor: Krishna P. Singh
Date of Patent Issuance: February 22, 2018
Status: Published
Jurisdiction: US
Assignee: Holtec International, Inc.
Equipment Type: FHD
Docket Number: HOL-008
Publication Number: US 2018/0053574 A1
Application Number: 15/702,195

Related US Application Data:

  • Application No. 14/288,045, previously published as US 2014/0317952 A1, and now Patent No.  US 9,761,338 B2.
  • Continuation of Application No. 13/622,343, filed on September 18, 2012, previously published as US 2013/0163710 A1, now Patent No.  US 8,737,559 B2, which is a continuation of Application No. 12/641,378, filed on December 18, 2009, previously published as US 2010/0212182 A1 on August 26, 2010 and now Patent No. US 8,266,823 B2, which is a division of Application No. 11/145,785, filed on June 6, 2005, previously published as US 2006/0272175 A1 on December 6, 2006 and now Patent No. US 7,707,741 B2

European Patent No.EP 1 888 988 B1
Dated:  October 24, 2018

Abstract: A system and method for drying cavities loaded with high level waste (“HLW”) is devised. The invention utilizes a non-intrusive procedure that is based on monitoring the dew point temperature of a non-reactive gas that is circulated through the cavity. In one aspect, the invention is a system for drying a cavity loaded with HLW comprising: a canister forming the cavity, the cavity having an inlet and an outlet; and a source of non-reactive gas. The system further flows the non-reactive gas from the source of non-reactive gas through the cavity; and repetitively measures the dew point temperature of the non-reactive gas exiting the cavity.