1 December 2015 IGEM/SR/15 Edition 5 +A: 2015 - Integrity of safety related systems in the gas industry
31 May 2026 IGEM/SR/18 Edition 4 - Safe working practices to ensure the integrity of gas pipelines and associated installations
28 January 2025 IGEM/SR/22 Edition 2 - Purging operations for fuel gases in transmission, distribution and storage
1 August 2013 IGEM/SR/25 Edition 2 with amendments 2013- Hazardous area classification of natural gas installations
