United States Nuclear Regulatory Commission - Protecting People and the Environment

Submergence and High Temperature Steam Testing of Class lE Electrical Cables (NUREG/CR-5655)

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Publication Information

Manuscript Completed: April 1991
Date Published: May 1991

Prepared by:
M. J. Jacobus, G. F. Fuehrer*

Sandia National Laboratories
Albuquerque, NM 87185

Prepared for:
Division of Engineering
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

NRC FIN A1818

*Science and Engineering Associates
Albuquerque, NM 87110

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Abstract

This report describes the results of high temperature steam testing and submergence testing of 12 different cable products that are representative of typical cables used inside containments of U.S. light water reactors. Both tests were performed after the cables were exposed to simultaneous thermal and radiation aging, followed by exposure to loss-of-coolant accident simulations. The results of the high temperature steam test indicate the approximate thermal failure thresholds for each cable type. The results of the submergence test indicate that a number of cable types can withstand submergence at elevated temperature, even after exposure to a loss-of-coolant accident simulation.

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