A quick search of SAFTENG.net and one will see that over the years I have written dozens of articles discussing the need for hydrostatic relief protection on piping where a liquid that gets blocked in could expand and rupture the pipe. Yet it seems that each industry somehow feels the need or requirement does not apply to them. OSHA specifically calls for the use of hydrostats in their Ammonia and LPG standards and the most common piping RAGAGEPs also REQUIRE them…