Reactor internal pump behavior during cavitation

Conference · Wed Nov 01 00:00:00 EST 1989 · Transactions of the American Nuclear Society; (United States)

OSTI ID:5421928

Komita, Hideo; Usuki, Shouji; Fukuda, Shinichi ^[1]

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1. Toshiba Corporation, Yokohama (Japan)

The characteristics of reactor internal pumps (RIPs) under cavitation conditions were experimentally evaluated in full scale with different water temperature parameters. The hydraulic performance and vibration behavior under cavitation conditions were clarified. An advanced boiling water reactor is equipped with RIPs for coolant recirculation. The RIP is a vertical, single-stage, mixed-flow pump that is mounted in the annular downcomer of the reactor pressure vessel. In general, when a pump operates under cavitation conditions, the pump total head decreases, and the appearance and collapse of vapor bubbles induce vibration and noise, causing damage to components. Various reports have been made on centrifugal pump behavior in cold water, but very few have discussed the characteristics of a mixed-flow pump like the RIP in hot water. Very few have measured impeller vibration in hot water, which is significantly influenced by cavitation. Therefore, it is difficult to precisely determine RIP behavior under cavitation conditions. Hydraulic performance and vibration behavior under cavitation conditions are experimentally clarified in this paper.

• OSTI ID: 5421928
• Report Number(s): CONF-891103-; CODEN: TANSA; TRN: 91-024513
• Journal Information: Transactions of the American Nuclear Society; (United States), Vol. 60; Conference: Winter meeting of the American Nuclear Society (ANS) and nuclear power and technology exhibit, San Francisco, CA (United States), 26-30 Nov 1989; ISSN 0003-018X
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
BWR TYPE REACTORS
PRIMARY COOLANT CIRCUITS
PUMPS
CAVITATION
BUBBLES
EDDY CURRENT TESTING
HYDRAULICS
MATHEMATICAL MODELS
MECHANICAL VIBRATIONS
PERFORMANCE
PRESSURE VESSELS
TEST FACILITIES
CONTAINERS
COOLING SYSTEMS
ELECTROMAGNETIC TESTING
ENERGY SYSTEMS
FLUID MECHANICS
MATERIALS TESTING
MECHANICS
NONDESTRUCTIVE TESTING
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
TESTING
WATER COOLED REACTORS
WATER MODERATED REACTORS
210100* - Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled