Subsea Repair Clamp for Leaking Valve
Subsea Repair Clamp for Leaking Valve
(OP)
Does anyone have any experience of installing a clamp or similar onto a leaking valve? We have a several leaking valves and there are concerns regarding integrity (obviously) and we have been advised that preferred solution is to not operate valve or access gearbox etc due to concerns of making things worse and creating further leak paths (dodgy seals). I've been looking online but can only find examples of repair clamps installed on pipelines and tubulars, something similar would work but I have been unable to find an example. Any other ideas welcome...
Thanks
Thanks





RE: Subsea Repair Clamp for Leaking Valve
There are no clamps for valves that I know of.
RE: Subsea Repair Clamp for Leaking Valve
RE: Subsea Repair Clamp for Leaking Valve
RE: Subsea Repair Clamp for Leaking Valve
Sealant would have to be applied by divers or ROV using pressured grease gun.
Grease can be applied through lube fittings, even if line is under internal pressure. Hopefully the valve was ordered with lube fittings, right?
http://www.wegman.nl/downloads/WM%20-%20Installati...
Although that says not to inject into stem fittings
RE: Subsea Repair Clamp for Leaking Valve
Why wouldn't you use flanged valves? 95% of subsea structures I've seen have flanged valves(North Sea), replacing a welded valve is a lot more expensive?
RE: Subsea Repair Clamp for Leaking Valve
RE: Subsea Repair Clamp for Leaking Valve
Where are the leaks?
Stem?
Body?
Body flange?
end flange?
Internal seal?
If stem what is seal arrangement? Can you post a cross section?
If internal seal what are seats made of?
Pressure?
Actuators / manual / ROV?
If you could find such a clamp, this would mean your valve would probably become inoperable. Is this acceptable?
what is access like?
Is it inside a structure?
Give us a bit of a clue here and you might get some more targeted responses.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.