Micalbrch:- I agree, I am use to seeing a Check valve mainly on the discharge side of pumps; but in Drilling there aren't any! Hence the Thread. I'm aware of the in-build check valve on some recips but in certain process conditions there is sometimes an additional outside the pump package for...
Artsi: the query is about pumps in the drilling system in general; no I’m looking at the design of the mud system. Is there a requirement to have a check valves after pumps when pumping mud? And as these pumps tend to be intermittent is there a requirement to have duplex filters?
Biginch...
But you are forgetting the prime function of a check valve is to protect mechanical equipment; pumps, strainers, flowmeters, control valves etc in a piping system by preventing reversal of flow by the fluid. This is particularly important in the case of rotating equipment, where back flow could...
Pump design requirements in Drilling.
The pumps in the drilling industry are missing check valves on the outlet from the centrifugal & reciprocating pumps; Why are there no check valves in the drilling process? Are not Mud & check valves a good combination?
Additionally what are the filter...
Hi all. I have an existing piping & pump process system but will be updated to new design. There is a specification which states that “The HP mud pumps shall be located to allow gravity feed from mud tanks in case of failure of super charge pumps. Supercharge pumps shall have gravity feed...
The self contained system which we are considering is: water mist for the above mentioned equipment .... but couldn't that still be supplied from the main firewater system?
Hi all, Application. Offshore platform.
Fire hazards in the utility areas are generally limited.. but why is it; Firewater diesel, emergency generator, and main transformer rooms .... all have there own self contained protection system , why aren't these also not connected to the main firewater...
For what is worth, my understanding of a jockey pump is to maintain pressure in a closed system .... if there is a pressure leakage of some kind, ie, opening of a valve, the jockey pumps kicks in to maintian the pressure.. but it shouldn't be run all the time .. should it ??
Hi All,
I'm involved in the front end design of a platform, and I have a question to all you readers. The onset years, gas export is not a problem, after it goes through a series of recompressors it meets the export pressure of the grid. … But after the gas pressure decreases in the well we...
Generally say, the big boys in the business, like the, Halliburton, Bechtel, Technip, ABB etc, would perform the full scope, EPCm ??? Although, perhaps the client would have one of these do the Engineering, Procurement part but when it comes to the construction part they would use another...
Hi All,
Can someone please explain the differences between Engineering Procurement Construction (EPC) and Engineering Procurement Construction Management (EPCm).
I’m under the impression, or told, that the main contractor hires in another company, say a project management company to help with...
I realise it is normally done uncoupled, but because its coupled machine .You can't bump test the motor uncoupled unless I push the motor back away from the hub of the compressor shaft ... Then one must do an alignment all over again..
What are the requirements to bump test a Meduim Voltage Motor directly coupled to a reciprocating compressor?
Does one need to have all the utilies operational, cooling water, air, lube oil, (flushed) ???
An answer in the simplest form would be appreciated, required for planning purposes...
Hi all,
When performing laser alignment must the coupling be removed?
I’ve witnessed a millwright/mechanical fitter performing an alignment check on a pump with the coupling installed, however the coupling bolts are loose.
Will this not prestress the alignment? REMOVE COULPING !!
Cheers in...
Non-Return Valves or Check Valves, which they are commonly known as, are inspected frequently during the shutdowns on this Oil Refinery. Therefore it’s been suggested to perform an RCM (Reliability Centred Maintenance) study. The Check valves in question are all above 2”, rated between 150 -...
What are the standard details for venting and draining in systems? I’ve been searching through ASME for a standard but to no prevail. Obviously certain rating have different specifications. This particular line I'm working on is a 1½” gas line with many branch connections. On the drain...
