Lethal service (pressure vessel) definition
Lethal service (pressure vessel) means a pressure vessel stamped “lethal service” which contains, under pressure, poisonous gas or liquids of such a nature that a very small amount of the gas or of the vapor of the liquid mixed or unmixed with air is dangerous to life when inhaled. See Footnote in ASME Code, Section VIII, Division 1, UW-2(a).