![]() ![]() ![]() The final pressure test requires filling the tank completely with water and holding at 150 PSI for at least thirty minutes and as long as sixty minutes. The final hydrostatic pressure test of each tank must be performed under the watchful eyes of an inspector from the Hartford Steam Boiler Insurance and Inspection Co. certified and the welding rod must be certified as having the same tensile strength as the steel on which it is used. Tanks must be constructed of steel meeting A.S.M.E.’s exact specifications – gauge, tensile strength, etc. ![]()
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