IGE/UP/1A Edition 2 +A: 2005 - Digital (1 year)
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