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Title: Thermal Stress in HFEF Hot Cell Windows Due to an In-Cell Metal Fire

This work investigates an accident during the pyrochemical extraction of Uranium and Plutonium from PWR spent fuel in an argon atmosphere hot cell. In the accident, the heavy metals (U and Pu) being extracted are accidentally exposed to air from a leaky instrument penetration which goes through the cell walls. The extracted pin size pieces of U and Pu metal readily burn when exposed to air. Technicians perform the electrochemical extraction using manipulators through a 4 foot thick hot cell concrete wall which protects them from the radioactivity of the spent fuel. Four foot thick windows placed in the wall allow the technicians to visually control the manipulators. These windows would be exposed to the heat of the metal fire. As a result, this analysis determines if the thermal stress caused by the fire would crack the windows and if the heat would degrade the window seals allowing radioactivity to escape from the cell.
Authors:
;
Publication Date:
OSTI Identifier:
1246160
Report Number(s):
INL/JOU--15-34471
Journal ID: ISSN 2161-6795
Grant/Contract Number:
AC07-05ID14517
Type:
Accepted Manuscript
Journal Name:
World Journal of Nuclear Science and Technology
Additional Journal Information:
Journal Volume: 06; Journal Issue: 01; Journal ID: ISSN 2161-6795
Publisher:
Scientific Research Publishing, Inc.
Research Org:
Idaho National Laboratory, Idaho Falls, ID (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS pyrophoric metals; thermal stress; nuclear fuel reprocessing; hot cells; brittle materials; yield stress