CRD milling machine
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United States of America Patent
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-
May 26, 1992
Grant Date -
N/A
app pub date -
Feb 19, 1991
filing date -
Feb 19, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for refurbishing the ends of control rod drive (CRD) penetrations used in nuclear boiling water reactor systems where the rods are disposed in a grid of rows and columns with a known predetermined spacing therebetween. The apparatus is rapidly positioned for support on a pair of CRDs adjacent to a CRD to be refurbished, coaxially aligning the end mill with the CRD to be refurbished. The end mill is then brought into contact with the CRD to be refurbished. After the refurbishment process, the apparatus is rapidly removed and ready to be positioned on another pair of CRDs adjacent to another CRD to be refubished.
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