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

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These procedures apply to any section of pipework containing Natural Gas from the outlet of the emergency control valve having:

  • A volume of not exceeding 1 m3 including any meter and any allowance for fittings
  • A MOP not exceeding 40 mbar at the outlet of the primary meter regulator
  • A supply MOP not exceeding 75 mbar
  • A nominal bore not exceeding 150 mm.

It applies 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/1A - Certificate of strength testing for IGE/UP/1A

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

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

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