Posted By Barry Bruce What distance away from a gas govenor would be acceptable for siting a smoking shelter. I know, alarm bells ringing................but is there an acceptable distance within which naked flames should be prohibited? Im looking for Best Practice Guidance? Also, on a related matter. Someone at work has suggested that the gas govenor is 'designed to leak gas' in order to prevent overheating of a gland within the housing - im dubious to say the least - any gas experts our there?

Posted By D. Hilton It depends on the availability of ventilation at the location of the pressure regulator. The hazardous zone surrounding the regulator depends on the pressures involved, type of mechanical fastening and design of valve i.e. vented vs non vented. Zone 1 applicable to the vented valve Zone 2 at any mechanical fastening (non threaded) Non hazardous if non vented and threaded mechanical fastening. In reality, given good ventilation there would probably be a zone of negligible extent. However I would suggest at least 2-3 metres separation.

Posted By D. Hilton At 10 metres not an issue