CERN Accelerating science

The purpose of this Specific Safety Instruction is to define the additional Safety requirements, compared to General Safety Instruction GSI-M-2 “Standard pressure equipment”, relating to pressure vessels used at CERN that are subject to or could be subject to a maximum allowable pressure of PS > 0.5 bar . The following vessels and their safety accessories are excluded from the scope of this Specific Safety Inspection: • cryogenic vessels; • vessels subjected to an open flame; • simple pressure vessels; • vessels used for heating, ventilation and air conditioning (HVAC); • transportable pressure vessels.