Nuclear fuel bundle spacer spring constant gauge

Details Nuclear fuel bundle spacer spring constant gauge Nuclear fuel bundle spacer spring constant gauge

1993-02-25

1994-08-30

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Testing, sensing, measuring, or detecting a fission reactor...

Temperature or pressure measurement

376245, G21C 1700

Patent

active

053435044

ABSTRACT:
To measure the spring constants of double-acting, fuel rod-centering springs assembled with different pairs of ferrules in a nuclear fuel bundle spacer, a gauge is provided to include an alignment rod and a probe carried by a handle for insertions into the ferrules of a ferrule pair. The alignment rod loads the side of the spring acting in its ferrule, while the other spring side exerts its fuel rod-centering force on a load cell carried by the probe. A micrometer acts against the load cell to produce measured deflections of the other spring side. Spring constants are calculated from electrical readouts of spring force and spring deflection from the load cell and micrometer.

REFERENCES:
patent: 4028811 (1977-06-01), Hutter et al.
patent: 4086809 (1978-05-01), Wu et al.
patent: 4108719 (1978-08-01), Olshausen
patent: 4246783 (1981-01-01), Steven et al.
patent: 5215705 (1993-06-01), Butzin et al.
patent: 5226633 (1993-07-01), Willard, Jr.

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