Hello, my name is Robert and I'm the author of OsmHydrant, an easy-to-use OSM-editor for fire water facilities (i.e. fire hydrants, water tanks and suction points). I wanted to grab some opinions upon emergency=suction_point vs emergency=fire_hydrant + fire_hydrant:type=suction_point.
As I'm writing this, there are 1020 nodes of fire_hydrant:type=suction_point, mostly used by the Polish community.
I think the OSM community should find consensus upon which tag to use.
A suction point is a preferred place to get fire water like shown in this picture: suction point
At such places there are no prepared connectors where you just connect like on a fire hydrant, but they are prepared or suitable locations to place fire pumps. Suction points may be prepared at rivers, ponds and underground water-tanks.
Pro & Contra
(+) means in favor of, (-) states a contra for this tagging concept.
- (+) as there are also emergency=fire_water_pond and emergency=water_tank for fire water stuff, a more specific tag for prepared places to place your fire pump suits better than using emergency=fire_hydrant for a node which is not a fire hydrant.
emergency=fire_hydrant + fire_hydrant:type=suction_point
- (-) a suction point has got no connector, all other fire hydrant types got one
- (+) you only need to query for emergency=fire_hydrant when you're searching for fire water (besides water tanks, but they might not be always usable) and somehow they belong together
We should find consensus to avoid going two directions for the same thing. Having one way of tagging suction-points would also ease future work.
You should start a discussion at the regarding Mailing lists/Forums to reach some mappers. IMHO this place is least likely to be found. After a consensus more or less is reached you should announce a mechanical edit before you change one of the tags. Sorry that it sounds a little complicated and tedious, but that's the way it is supposed to go. -- malenki 19:37, 22 February 2015 (UTC)