Procurement2
Petroleum
We hydotested a globe valve & the testing lab has informed us that there is a pin hole found. Can any one explain me what is a pin hole & what are the consequences of this pin hole & how can this be rectified
Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
Pin hole in globe valve 1
- Thread starter Procurement2
- Start date
- Status
This post really scares me!
Someone who identified himself or herself as "Procurement2" & "Petroleum" implies they are in the business of buying products (valves) or materials for some phase of the petroleum industry.
But as we read on they do not appear to know what a globe valve is or what it does and what a pin hole in the valve might mean. They apparently are not smart enough to have asked the "testing lab" what they mean by their report. Apparently they also did not ask the "testing lab" how to rectify the problem.
Would you want this person buying valves for your refinery project?
prognosis: Lead or Lag
Someone who identified himself or herself as "Procurement2" & "Petroleum" implies they are in the business of buying products (valves) or materials for some phase of the petroleum industry.
But as we read on they do not appear to know what a globe valve is or what it does and what a pin hole in the valve might mean. They apparently are not smart enough to have asked the "testing lab" what they mean by their report. Apparently they also did not ask the "testing lab" how to rectify the problem.
Would you want this person buying valves for your refinery project?
prognosis: Lead or Lag
-
1
- #3
MikeHalloran
Mechanical
Pin holes are not made by, or for, pins.
They are manufacturing defects.
When a pinholed valve is filled with fluid and pressurized, the fluid squirts out.
In most services, that would be a bad thing.
In a refinery, that would be A Really Bad Thing.
Worse, pinholes don't travel alone.
If there's one, there will be more.
Repair the pinhole you find, and later on, the pinhole that you didn't find will open up and squirt out the contents.
Again, in a refinery, that would be A Really Bad Thing.
The best thing to do is throw away the pinholed valve, and all of its brothers as well, and go buy some proper valves.
Mike Halloran
Pembroke Pines, FL, USA
They are manufacturing defects.
When a pinholed valve is filled with fluid and pressurized, the fluid squirts out.
In most services, that would be a bad thing.
In a refinery, that would be A Really Bad Thing.
Worse, pinholes don't travel alone.
If there's one, there will be more.
Repair the pinhole you find, and later on, the pinhole that you didn't find will open up and squirt out the contents.
Again, in a refinery, that would be A Really Bad Thing.
The best thing to do is throw away the pinholed valve, and all of its brothers as well, and go buy some proper valves.
Mike Halloran
Pembroke Pines, FL, USA
- Status
Similar threads
