Self repairing gas leak

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Hope this is OK in here as the Combustion Chamber is only for the elite.
Would appreciate any comments.

Unpleasant (gas, drain or rotting carcase) smell in son's dining room.
No evidence of mouse in room or under chipboard floor. Air under floor fresh, dry concrete oversite and no drains or water/waste pipes, but a gas pipe crosses below the joists. No gas appliances in room.

Meter outside, Gas c/h boiler in garage, hob in kitchen and gas fire in lounge. All separate rooms.

Gas Networks attended to check and reported no gas leak (except insignificant trace drop on pressure drop tests. (Advised owner to recall them if necessary)

3 days later with no improvement, Networks were recalled. A pressure test was undertaken, and a gas leak was declared but no drop measurements were left and no attempt was made to trace source or repair. An ID notice was served and the meter turned off with a warning and notice, leaving householder with no heating source, no cooking facilities and two small children.

A Gas Safe repairer was called who arrived 2 hours later and on starting with a pressure test could not identify any leak or pressure drop at all.
He remained whilst Networks were contacted and a (different) Network engineer arrive, who agreed that no leak or pressure drop could be found.
Networks suggest that "there may have been a bit of dirt on a valve somewhere which showed up as a leak on the second visit but fell off before the Gas Safe repairer arrived or was blown off, so that the leak could not be measured at the later visit"

Not unreasonably, the repair engineer requires payment for the call out and time spent on site waiting for Networks together with relighting the appliances.

Is the Networks explanation likely? Personally I suspect that the ID was wrongly served and wrongly measured; it seems too much of a coincidence as the mal-odour still remains and is definitely not a gas smell. Under those circumstances, what chance is there of getting Networks to foot the repair engineer's charges?

(Working on a mouse carcase, how long do they take to decompose?)
 
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They won't pay regardless, as for a leak then no leak doubt that a leak won't just stop over night. As for a carcass time to decompose may be a few months, have you checked under the manhole covers could be a blocked drain.
 
Thanks. Thought there would be difficulties.
There are no drains under this area.
 
I grew up in a very old house in which mice chose to die fairly regularly. We sort of became used to the smell...

The worst of it is over in about 2 weeks, depending on weather. We used to know when the bad part was finished because there would be a sudden increase in flies...(which you probably won't get in winter).

After that it sort of lingers for up to a month or more. The only thing that could take the edge of it were those Neutradol ball things, but you need about 3 in the room depending on its size!

Sometimes smells 'travel'. My mother has this problem. She knows when there is a dosing problem at the local sewage works because a smell lingers in the low part of her house. I assume you've done obvious things...you have no unused toilets that need flushing or sinks which have dried up? Might be worth tipping a load of drain cleaner down each sink / toilet just to be sure.
 
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Small leaks are pernissible but ONLY if there is no smell of gas.

It sounds as if the son said that there was a smell in which case the NGT engineer has to cap it off.

The action they take depends on what is said to them!

If they are told that there is a smell of gas and they cap it off then you have to pay an independent to check and turn it back on again.

Why on earth did son insist on recalling the NGT engineer while the independent was waiting? Thats where the fault lies!

Unlikely in this case, but some appliances can have intermittent leaks.

Tony
 
Thanks Agile.
It was actually the independent (BG) who would not restore supply unless Networks returned and confirmed no-leak.
The "customer"--and all others--agreed that there was a smell; the difficulty being in recognising "what of."

Ah well, --expensive mouse.
 
The RGI could have restored the Gas, and used a gas sniffer to check whether it was gas or not.

Could the smell be coming from next door.
 

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