Gas Pipeline Inspection Criteria
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Gas Pipeline Inspection Criteria
Hi all,
Could anyone give me an idea about the specifics of gas pipeline inspection flights in the UK?
Interested to know how often an area gets inspected, how high and fast you fly, do you need to hover and if so, for how long. Also, what lasers, radar or anything else you use to detect methane etc, not tech spec but general info.
Thanks
Could anyone give me an idea about the specifics of gas pipeline inspection flights in the UK?
Interested to know how often an area gets inspected, how high and fast you fly, do you need to hover and if so, for how long. Also, what lasers, radar or anything else you use to detect methane etc, not tech spec but general info.
Thanks
Leak detection is mostly done with Infrared cameras tuned to the proper wavelength, such as certain FLIR units.
We used to do ours fortnightly on an exemption to 200ft and at a notional 80Kts. Hover is of no particular use - you can orbit if needed for a closer look. Landing out was only ever in extreme cases (A Hymac actually found digging on the easement for instance) In reality of course it was flown as fast as you could go.
There have been precious few gas pipelines dug recently so any noise is an established thing.
The inspections are a legal requirement.
I think you'd struggle with a noise complaint on that basis.
f/w really isn't a good alternative. Visibility is so much poorer unless you're in an Optica it just won't work, flying at 200' downwind in half a gale isn't safe f/w territory. Grubbing over hill and dale in 1500m vis (ahem, at least!) and drizzle is most cetainly not.
The inspections are a legal requirement.
I think you'd struggle with a noise complaint on that basis.
f/w really isn't a good alternative. Visibility is so much poorer unless you're in an Optica it just won't work, flying at 200' downwind in half a gale isn't safe f/w territory. Grubbing over hill and dale in 1500m vis (ahem, at least!) and drizzle is most cetainly not.
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Our local police departments give public notice of scheduled utility inspection flights so as to cut down on nuisance calls. There's been more than one notice of "drones" instead of "blue and white helicopter" lately. It's happening.
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It’s because some bright spark wants to build a new housing estate over the top of a mains gas pipeline, 900mm bore and 80 psi I believe. They have to give it 15 m spacing or so, either side, but I think it won’t go ahead for obvious reasons. Remembered from my time in the RAF, we had to avoid the inspection routes if we were low level, just thought a bit more ammo against the planners. The helos could hardly do inspections over a built up area, esp single-engined, 1000 agl min over built up I’ve been told.
Thanks for for the input folks.
Thanks for for the input folks.
Show the public this report of a gas pipeline explosion in San Bruno, California
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I work in the technical safety area and 15m is nothing like far enough for the pipeline you describe. Make sure the council insist on some gas dispersion modelling being done - no way I would live that close to to a threat like that.
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Pipeline patrols in Alberta Canada are carried out with a fixed wing aircraft. I know of one company that uses a red Cessna 172 to do the checks around Edmonton.