DN-15e Commissioning of Gas Mains by Direct Purging
by Alan Milford, from the Community
Comprehensive DN-15e procedure for commissioning gas mains up to 355 mm and 2 bar using direct purging. Includes prerequisites and permits, purge velocity rules, communications and resident liaison, branch strategies (sequential or simultaneous), rider and vent sizing and placement, risk controls, and step-by-step commissioning with P1/P2 monitoring. Covers pressure staging for MP systems, leak detection, isolation checks, and safe decommissioning and sign off.
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