Flow-induced vibration characteristics of the BWR/5-201 jet pump

Technical Report · Wed Sep 01 00:00:00 EDT 1982

OSTI ID:6671761

LaCroix, L V

A General Electric boiling water reactor BWR/5-201 jet pump was tested for flow-induced vibration (FIV) characteristics in the Large Steam Water Test Facility at Moss Landing, CA, during the period June-July 1978. High level periodic FIV were observed at reactor operating conditions (1027 psia, 532/sup 0/F and prototypical flow rates) for the specific single jet pump assembly tested. High level FIV of similar amplitude and character have been shown capable of damaging jet pump components and associated support hardware if allowed to continue unchecked. High level FIV were effectively suppressed in two special cases tested: (1) lateral load (>500 lb) at the mixer to diffuser slip joint; and (2) a labyrinth seal (5 small, circumferential grooves) on the mixer at the slip joint. Stability criteria for the particular jet pump tested were developed from test data. A cause-effect relationship between the dynamic pressure within the slip joint and the jet pump vibration was established.

• Research Organization: General Electric Co., San Jose, CA (USA). Nuclear Fuel and Special Projects Div.
• DOE Contract Number: AC02-77ET34209
• OSTI ID: 6671761
• Report Number(s): GEAP-22211; ON: DE83003975
• Resource Relation: Other Information: Portions of document are illegible. Printed copy available until stock is exhausted
• Country of Publication: United States
• Language: English

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