Dumping fuel area (rout) real structure in busy ATM?
 

I think this topic has been raised before…but we are redesigning our airspace and wondering how ATS solve those problems in any stage of the flights?

Thanks

From the UK CAA MATS Pt.1

12 Fuel Jettisoning
12.1 Pilots of aircraft in flight are permitted to jettison fuel in an emergency. The decision
to jettison rests solely with the pilot but he may request guidance from ATC.
12.2 Controllers are to recommend that jettisoning of fuel should be carried out:
a) over the sea, if at all possible; or
b) above 10 000 feet agl.
12.3 Exceptionally, if a) or b) is operationally impracticable or inconsistent with safety, fuel
may be jettisoned above 7000 feet agl in winter and above 4000 feet agl in summer.
For fuel to be jettisoned below these levels the situation must be unavoidable.
12.4 A vertical separation of at least 1000 feet between aircraft should be maintained.

That's the UK procedure. If it helps.