* 2 × incoming gas mains
* Uplift existing 6" gas main to high level (near soffit)
* New brackets/support system
* Re-fixing and testing
* Certification
* Additional isolation points (GF & Basement)
* Marked-up as-built drawing
* This would normally require:
* Commercial Gas Safe engineer (COCN1 + relevant ICPN modules)
* Possibly a 2-man team (due to 6" pipe weight)
* MEWP or scaffold access (if high level)
* Testing & purging
* Tightness test + certification paperwork
* For 6" commercial gas:
* You need correct Gas Safe commercial categories
* Purge calculations must be documented
* Tightness test certificates issued
* As-built drawings matter (especially for landlords)
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