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Inspecting your LP-Gas Bulk Plant Internal Relief Valves

Posted by Greg Ezzell on Wed, Aug 19, 2009 @ 09:33 AM

With the July 2011 deadline approaching for compliance with NFPA 58, we think it makes a lot of sense to inspect all vital components of your bulk plant.  One of the most important safety components of your LP-gas storage vessel is the internal relief valve system.  LP-gas relief valves are intended to open only under the excessive pressure conditions indicated below.  The container pressure will get high enough to open relief valves under the following conditions:
  • Filling containers not purged of air
  • Overfilled container exposed to heat, which includes radiant heat (sun).
  • Use of an incorrect product such as propane in a container with relief valve set for butane pressures (Low set pressure for service)
  • All containers exposed to extreme heat (fire).
  • Excessive pressures created during filling

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Tags: LP-Gas Relief Valves, Internal Relief Valves, NFPA 58 LP-Gas Compliance, Propane Storage Tank Relief Valves

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