This DN-15d checklist guides competent operatives through safe pneumatic pressure testing of MP/LP gas mains. It covers required calibrated equipment, installation of standpipes and gauges, safety signage and anchorage, pre-test checks, controlled pressurisation, temperature stabilisation, leak detection, recording initial and final readings, and actions for test failure. It also details de‑pressurisation, noise mitigation, documentation, and completion of test certificates in line with NRO/RO procedures and SGN standards.
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