Measuring and testing – With fluid pressure – Clamp – plug – or sealing feature
Patent
1993-10-12
1994-12-27
Williams, Hezron E.
Measuring and testing
With fluid pressure
Clamp, plug, or sealing feature
376250, G01M 300
Patent
active
053754581
ABSTRACT:
A multi-port tool which tests for leaks in the seals of a control rod drive that has been removed from its housing. The fixture is attached to the flange of the control rod drive using quick-release clamps. Two ports of the fixture are respectively coupled to the insert and withdraw ports of the control rod drive. A source of demineralized water at a constant pressure is applied to an inlet port of the leak test fixture. The pressurized water is applied to the control rod drive while the index tube is restrained by a restraining rig. A number of valves are selectively opened or closed to provide a flow path for the pressurized water to either the insert port or the withdraw port. The leakage rate at each of a number of leakage points is determined when the pressurized water is applied at the insert port only and again when the pressurized water is applied at the withdraw port only.
REFERENCES:
patent: 5245640 (1993-09-01), Lingenfelter et al.
GE Manual, "Control Rod Drive-Model 7RDB144B", Leak Test Fixture, p. 11, May 1971.
Dela Rosa Herbert B.
Ethridge Douglas K.
Oliver Dale M.
Ortega Frank
Russell Harry I.
Beulick J. S.
General Electric Company
Roskos Joseph W.
Williams Hezron E.
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