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How do I get approval to install or modify a gas train?

Any gas boiler, steam boiler or furnace that uses natural gas should be fitted with a gas train that meets British Standards BS 5885. Testing requirements for these boilers depend on the components and type of your gas train.

If you are the owner of such a boiler (including a dual fuel-gas firing boiler), you need prior approval from MOM before you can install or modify.

As part of your application for approval, you will need to submit a detailed piping and instrumentation diagram of the gas train, including a full legend.