Hi again. Le vendredi 19 avril 2013, Pieren a écrit : > > I would not create a special page for this but just enhance the current > wiki about man_made=pipeline (in type=water section). >
If I introduce a new tag, a new tag descriptive page is mandatory. If a page explain what is a pipeline system, of course I would improve it without create a dedicated page about surge tanks. But it doesn't seem to exist: http://wiki.openstreetmap.org/wiki/Pipeline Furthermore, such a tank should connect a drain (water supply without pressure) - waterway=drain - to a pipeline (where water could be pressurised) - man_made=pipeline. In France EDF brings water to its plants firstly by surface or underground drains, which often are not visitables because of large amount of water running from bottom to ceiling of tunnels. Then a surge tank protects these drains for excessive pressure they can't even bare. Finally, water strongly fall down to valves + turbines through a shielded shaft, several pipes prevent visitors to be flooded and they may walk safely beside. It would be good to explain that on wiki indeed. Cheers. -- *François Lacombe* francois dot lacombe At telecom-bretagne dot eu http://www.infos-reseaux.com
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