An in situ testing apparatus for testing the integrity of 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 a hydraulic hose of known pressure, and a hole through {HEAD ~ the top} of {TAIL ~ the member} 
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An in situ testing apparatus for testing the integrity of 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 a hydraulic hose of known pressure , and a hole through { HEAD ~ the top } of { TAIL ~ the member }
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