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U.S. Department of Energy
Office of Scientific and Technical Information

MEANS FOR DETECTING INSULATION FAILURE IN REACTOR PRESSURE TUBES

Patent ·
OSTI ID:4694404

A pressure tube providing a coolant channel in a power reactor is designed with means for detecting failure of its thermal insulation. The insulation comprises stagnant coolant in dimpled metal sheets between a liner and the tube, and a vent is formed between the upstream end of the insulation and the channel. A ring dividing the insulation into two sections is provided with a small aperture, and a thermocouple is located in the tube in vicinity of the aperture in order to detect temperature rises due to hot coolant penetrating the insulation. (D.L.C.)

Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-17-021354
Assignee:
Atomic Energy of Canada Ltd.
Patent Number(s):
US 3085961
OSTI ID:
4694404
Country of Publication:
United States
Language:
English