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PLUGGING LEAKS BETWEEN WATER AND THIRD FLUID SYSTEM (Hg). Memo Report 92

Technical Report ·
OSTI ID:4263454
An investigation was made of sealing methods for leaks between water (or steam) and mercury systems. Leaks simulating tube-to-tube sheet joint cracks were successfully plugged in < 1 hr by adding a commercial boiler sealant (Leakure) or an Fe-Fe/sub 2/O/sub 3/ mixture to the water side. Addition of 1 wt. % magnesium + ~ 1 vol. % Leakure to the mercury system gave plugs in either steam or water leaks. Operating conditions were 500 psig (465 deg F) on the water side and ~300 psig 500 deg F on the mercury side. Pressures were alternated in some cases. Plugs held 500-800 psi differential pressures both at operating water conditions (atmospheric pressure on mercury side) and at room temperature. (auth)
Research Organization:
Mine Safety Appliances Co., Callery, Penna.
NSA Number:
NSA-13-011851
OSTI ID:
4263454
Report Number(s):
NP-7410
Country of Publication:
United States
Language:
English

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