IGE/UP/1 Edition 2 +A: 2005 - Strength testing/tightness testing/direct purging of industrial and commercial gas installations

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These procedures cover strength and tightness testing, and direct purging, of pipework not exceeding MOP of 16 bar and apply to any section of pipework including any appliance/plant pipework:

  • For Natural Gas, from the outlet of the ECV (fitted on the end of the gas service that is owned by the GT)
  • For Liquefied Petroleum Gas, from the outlet of the bulk storage vessel or cylinder valve
  • For other gases on customers’ premises, from the outlet of the isolation point from a distribution point.

They apply to strength and tightness testing in the following circumstances:

  • New pipework
  • Alteration to, replacement of, reuse of, or upgrading existing pipework
  • New extensions to existing pipework
  • Prior to any work on existing pipework
  • Where there is a known or suspected gas leak in the pipework
  • Where there has been a complete loss of pressure for any reason
  • Routine testing of existing pipework
  • Immediately before purging pipework (except when taking pipework permanently out of service).

And to direct purging in the following circumstances:

  • New pipework
  • Alteration to, replacement of or reuse of, existing pipework
  • New extensions to existing pipework
  • Where there has been a complete loss of pressure for any reason
  • Where there is the possibility of air being present in the pipework
  • Where pipework is to be taken out of service temporarily or permanently.

Certificate pads

The following blank triplicate certificates (in pads of 25) are available to purchase:

StT/UP/1 - Certificate of strength testing for IGE/UP/1

TT/UP/1 - Certificate of tightness testing for IGE/UP/1

DP/UP/1 - Certificate of direct purging for IGE/UP/1

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