Shutdown cooling pump vortex detection system

Details Shutdown cooling pump vortex detection system Shutdown cooling pump vortex detection system

1997-09-02

1999-01-19

Chilcot, Richard

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

G01F 158

Patent

active

058615601

ABSTRACT:
A system and method of detecting air vortexing and coriolis effect vortex-created cavitation in a shutdown cooling system drain pump of a nuclear power plant during midloop operation where the plant includes a horizontal hot leg having a drain pipe connected from the lower region thereof to a drain pump which includes attaching transducers of a portable clamp-on ultrasonic flowmeter to the drain pipe to measure and detect flow-void-created disruptions in the flowmeter ultrasonic signal and providing a remote alarm triggered by the disrupted signal.

REFERENCES:
patent: 4088987 (1978-05-01), Resler et al.
patent: 4405559 (1983-09-01), Tokarz
patent: 4600554 (1986-07-01), Brachet et al.
patent: 4879087 (1989-11-01), Akiyama et al.
patent: 5235524 (1993-08-01), Barkhoudarian
Clamp-On Portable multifunction flowmeters, Controtron, 1010DP and 1010WDP, Sep. 1994.

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