Although Flammable Gas codes/standards do NOT require the process to be “grounded”, grounding and bonding are ABSOLUTELY needed when purging/venting
While routine, closed-loop transfers are inherently safe from internal static ignition, bonding and grounding become critical whenever the system is opened to the atmosphere or when specific maintenance activities generate massive static charges. When we break the closed loop or introduce external energy, the hazard profile shifts from NFPA 58 back to the static mitigation…...
