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

IMPROVEMENTS IN OR RELATING TO FLOW-LIMITING DEVICES FOR PRESSURE TUBE ASSEMBLIES

Patent ·
OSTI ID:4003593
A pressure tube assembly for reactors with a liquid moderator and a gaseous coolant is designed with a device which produces a small head loss in normal operation but which, in case of rupture of the pressure tube, limits the flow rate until the tube can be closed off with a conventional closure means. The device comprises a restrictor nozzle located at both the inlet and outlet of the tube and having a minimum cross section at the thront portion which is dimensioned so that the normally subsonic flow becomes sonic when the flow rate exceeds a predetermined value. Several embodiments of the device are described. (D.L.C.)
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-18-021585
OSTI ID:
4003593
Report Number(s):
GB 955526
Country of Publication:
United Kingdom
Language:
English

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