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The IGEM/SR/25 calculator was developed by GL Noble Denton (now DNV GL) in agreement with the networks; Cadent, SGN, Northern Gas Network, Wales & West and IGEM.

IGEM/SR/25 Edition 2 with amendments 2013 Hydrogen Supplement 1

The IGEM SR Series includes all the Safety related Gas Standards

This Standard is to ensure the integrity of gas pipelines and associated installations

This standard details what actions should be taken in the event of a Natural Gas leak from either piped supplies or systems

This standard describes the safety concerns present when dealing with fixed volume storage, along with any associated valves or pipework, for gases that are lighter than air

This standard describes safety related control and protection systems in the gas and process industries, along with methods of defining tolerable risks

This standard assists in the defining of hazardous areas of natural gas installations, i.e. areas in which explosive atmospheres may occur and thus present a serious health and safety risk

This Standard covers all the measures and processes involved with successfully and safely carrying out a variety of trenchless techniques

This standard highlights those aspects of gasholder design, operation, inspection, maintenance, repair, modification and demolition which may put the gasholder or persons working on the gasholder or...

This standard covers the safe operation and design of systems designed to add odorant to gas in transmission and distribution networks

This standard covers purging operations for fuel gases in transmission, distribution and storage

These recommendations cover the safe venting of Natural Gas for vertical vent systems in permanent, temporary or emergency situations