METHOD AND APPARATUS FOR TESTING PRESSURE RESISTANCE OF BELLOWS AT PIERCING PART OF PIPING

摘要

PURPOSE:To simplify a structure while enhancing workability, by forming a hermetically closed space to the outside of bellows so as to surround the same and pressurizing or evacuating said space to perform a pressure resistance/ leakage test. CONSTITUTION:The connection part of the disc shaped protective ring 9 provided to the outside of bellows and a cylindrical protective cover 10 is welded to impart air-tightness and a gasket 6 is inserted in the gap part and clamped and sealed by a clamp plate 17 and a clamp bolt 19 to form a hermietically closed space to the outside of the bellows 6 while a test plug 18 is provided to the protective cover 10 to pressurize or evacuate said hermetically closed space. By this mechanism, because a worker is released from entering an atomic reactor receiving vessel under a highly radioactive condition and a guard pipe becomes unnecessary, work becomes easy and the structure of a test apparatus can be simplified.