LEAKAGE DETECTION METHOD FOR EXPANSION VESSEL

摘要

PROBLEM TO BE SOLVED: To provide a leak detection method for an expansion vessel occupying at least a part of or the entire cavity of an elastomer article in its expanded shape. SOLUTION: This method includes of adding tracer gas to a pressurized fluid. As for the atmosphere in the cavity 24 of the elastomer article not in the expansion vessel 14 inside, this method is characterized by a step for examining a proof showing a part of the tracer gas leaked from the expansion vessel 14.