An in situ testing apparatus for testing the integrity of {TAIL ~ rib plugs} used to seal faulty reactor boiler tubes consists of a cup shaped member with a groove on the open end, a tapped hole for attaching {HEAD ~ a hydraulic hose} of known pressure, and a hole through the top of the member 
An in situ testing apparatus for testing the integrity of { TAIL ~ rib plugs } used to seal faulty reactor boiler tubes consists of a cup shaped member with a groove on the open end , a tapped hole for attaching { HEAD ~ a hydraulic hose } of known pressure , and a hole through the top of the member
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