because they are not vent pipes, they are flame off points should the gas need to be burned rather than vented, many times it is safer to burn the excess gas rather than release it to atmosphere, if they were just vents the ends would be open, the mushroom shaped parts are flame arrestors that allow the gas to be burned, with no risk of the flame getting back to the gas supplyIf it always rises then the vent pipes need not be so tall. ?
Because gas is the same as everything, it is lazy and will always take the easiest path of resistance, ig Nat gas is leaking underground , it will not push up through Tarmac or concrete, it will trac along drains, water pipes , any ducts and rise at the easiest place, hence why anyone working in a drain, duct, inspecion hatch must have nat gas alarms or some way of checking before carrying out any work, it is not just comms engineersAlso comms engineers ( OpenReach etc ) are required to have gas alarms in place when working at a 18 inch deep inspection chamber even when the chamber is fully open to atmosphere.
must have nat gas alarms or some way of checking before carrying out any work, it is not just comms engineers
yep I remember the miners having them, wouldnt work on nat gas though, they were for underground, to show a depletion of oxygen as methane has no smell, hence the canaries, who died because of the lack of oxygen before the miners did
when you look back @HERTS P&D , what a hard time those lads had, I grew up in a mining community, so know lots about it, some real hard barstewards in those days, wonder what they would think of this Black lifes matter crap, they were black for half of every day, I was only a young lad and went down to Wales to play Rugby, we had the pleasure of seeing Max Boyce and he sang this song , it has stuck with me for over 35 years
I had believed natural gas was heavier than air and thus would settle in the bottom of a trench. But no I am corrected.
But even so when gas mains are being replaced the safety vents for any gas leaking from the work are much higher than the road surface.
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Also comms engineers ( OpenReach etc ) are required to have gas alarms in place when working at a 18 inch deep inspection chamber even when the chamber is fully open to atmosphere.
Correct, and as it is a mains and service renewal program he wont be able to have an internal meter eitherYou can't have plastic gas pipe in your garage and I don't believe you can have it under the floor of your garage and rising up to an internal meter.
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