Just tried to duplicate your scenario with twin kitchen sinks without success!One sink drained ahead of other. As Big Inch suggested for levels to drop simultaneously everything would need to mirrored/duplicated. I suspect there were other factors debris/equipment acting as non return valve in...
Skywalker, some questions/statements to get things rolling and promote discussion.
What is ambient air temperature of facility?
Are there any physicals limits on test facility.
What is allowable range on seawater temperatures?
If we assume bulk seawater of 35 then need to reduce tmperature of...
Steve maybe you need to demonstrate what they are playing with stick a cork in the end of the pipe give it a blast and let them see how far it goes and potential damage it could do.
In the UK this would likely fall under Pressure Regulations and the onous would be on the owner to ensure safe...
If you are in UK you may wish to check out Rolls Royce Marine, they have a sub (nuclear division) division. If you have difficulty let me know I can give you some names.
Brian C
Hi AO1958, what is the fluid, is the external surface exposed to a corrosive environment. If the latter answer is no then the indication is internal corrosion though you may want to look for pitting in adjacent area it may be impingemnt. check fluid velocity through tube
Regards Brian
Thanks for responses gents, I've now obtained copy of Presssure Systems Safety Regulations 2000. It appears in the UK that mandatory maintenance is anything identified in the "Written Scheme of Examination" (WSOE)and this should include all items done to safeguard personnel.
It is implied in...
Papiesz I would support the argument for analysis. It may not be an issue if the pump asssembly has been designed robustly however you may find as I did that the restrictive limitations imposed for pump loads had not been taken into account.
10's of newtons as opposed to the hundreds exterted...
The term mandatory maintenance has been bandied about in the office. Is "mandatory maintenance" specified by a regulating authority or is it identified and "self imposed" by the designer/operating authority.
We are discussing this in the context of UK Pressure Systems Safety Regulations 2000...
Gents, if you consider the kinetic energy for the pipework in full flow and then equate it to potential energy, you can see at a quick glance the potential problem if valves are closed quickly. This is why it is imperative that valve closure is managed.
I have seen damage that can be done on...
Cesar if you Google "equivalent wave speed" you can get a link to a review of this book:- Hydraulics of pipeline systems By Bruce E. Larock, Roland W. Jeppson, Gary Z. Watters. You might find some assistance here. I took from it that it might be possible to establish an equivalent thickness in...
Cesar, the effect of water hammer will most likely be the same for steel and GRP.
Have you established how water hammer will occur?
It is best to design out or put in operation procedures to prevent occurence, though you cannot rely on people to follow procedures.
Regards Brian
May I suggest you pose your question to a metallugist/welding engineer, or technical area of supplier (actual or otherwise). This might give you confidence in pursuing your line of action.
It might well be that a repair can be justified pwht.
I take it you have found no more defective pipe...
