Email RIS file
Bookmark
Report an Issue

Evaluation of Environmental Conditions on the Curing Of Commercial Fixative and Intumescent Coatings [electronic resource].

Published
Washington, D.C. : United States. Department of Energy. Office of Environmental Restoration and Waste Management, 2017.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
16 pages : digital, PDF file
Additional Creators
United States. Department of Energy. Savannah River Site, United States. Department of Energy. Office of Environmental Restoration and Waste Management, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Free-to-read Unrestricted online access
Summary
Performance metrics for evaluating commercial fixatives are often not readily available for important parameters that must be considered per the facility safety basis and the facility Basis for Interim Operations (BIO). One such parameter is the behavior of such materials in varied, “non-ideal” conditions where ideal is defined as 75 °F, 40% RH. Coupled with the inherent flammable nature of the fixative materials that can act to propagate flame along surfaces that are otherwise fireproof (concrete, sheet metal), much is left unknown when considering the safety basis implications for introducing these materials into nuclear facilities. Through SRNL’s efforts, three (3) fixatives, one (1) decontamination gel, and six (6) intumescent coatings were examined for their responses to environmental conditions to determine whether these materials were impervious to non-nominal temperatures and humidities that may be found in nuclear facilities. Characteristics that were examined included set-to-touch time, dust free time, and adhesion testing of the fully cured compounds. Of these ten materials, three were two-part epoxy materials while the other seven consisted of only one constituent. The results show that the epoxies tested are unable to cure in sub-freezing temperatures, with the low temperatures inhibiting crosslinking to a very significant degree. These efforts show significant inhibiting of performance for non-nominal environmental conditions, something that must be addressed both in the decision process for a fixative material to apply and per the safety basis to ensure the accurate flammability and material at risk is calculated.
Report Numbers
E 1.99:srnl-l--3100-2016-00230
srnl-l--3100-2016-00230
Subject(s)
Note
Published through SciTech Connect.
01/10/2017.
"srnl-l--3100-2016-00230"
J. C. Nicholson.
Funding Information
AC09-08SR22470
View MARC record | catkey: 24055272