Method and apparatus for replacing a nozzle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 13, 1993
Grant Date -
N/A
app pub date -
Dec 17, 1991
filing date -
Dec 17, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A replacement nozzle and heater sleeve for a nuclear reactor coolant system pressurizer. The heater, damaged heater sleeve exterior of the pressurizer and a portion of the heater sleeve inside the heater sleeve bore are removed. The heater sleeve bore is partially tapped to provide threads at its lower end. A sleeve having a first seal ring positioned at its upper end is threaded into the heater sleeve bore such that the first seal ring presses against the original heater sleeve and provides a seal. A second seal ring on a flange on the sleeve is pressed into sealing engagement with the exterior of the pressurizer.
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