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

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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