 1000 views |
 Technical Discussions |
|  Paul Skidmore
NDT Inspector
USA, Joined Dec 2008,  2  |
|  14:51 Nov-12-2009
Mag Particle and Senativity check IF you have a central conducter rod and a 44 foot of 4 1/2 .250 wall casing pipe how can you check the senativity of mag particle inspection being done on it beside a castrol strip. I have had several differnt people say it cant be done |
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|  Jim Draper
Consultant, ASNT Level III MT PT RT VT
Draper NDT, USA, Joined Jul 2009, 99 |
Jim Draper
Consultant, ASNT Level III MT PT RT VT
Draper NDT,
USA,
Joined Jul 2009
99
| 15:34 Nov-12-2009
Re: Mag Particle and Senativity check In Reply to Paul Skidmore at 14:51 Nov-12-2009 (Opening).
You could also use a QQI. It is a thin piece of metal with grooves in it. There is one with three circles cut into it, each circle a different depth. That would work. You could also use a hall effect gauss meter to verify the magnetic flux density on the surface of the pipe. It should be between 30 and 60 gauss. Or, if you have a piece of the pipe with a known discontinuity of the type you will be looking for, you could use that to prove the sensitivity of the test. |
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| Andreas
NDT Inspector, Specially in the oilfield
Tuboscope Vetco(Deutschland)Gmbh, Germany, Joined Oct 1999, 126 |
Andreas
NDT Inspector, Specially in the oilfield
Tuboscope Vetco(Deutschland)Gmbh,
Germany,
Joined Oct 1999
126
| 16:08 Nov-12-2009
Re: Mag Particle and Senativity check In Reply to Jim Draper at 15:34 Nov-12-2009 .
Go to the side of ASNT at look there for the technian V8NO2 , it explain well how to chek should be done ba the castrol strip.
Since you have a radial field in the pipe ,there is hardly ay field outside of the pipe.
Easiest way with the strip is to grind a small gouge inthe pipe.
Anyway if you inspect casing acc to API ,there is a recomandation for the minimum cd amperagedepende of the weight of pipe and unit used.
Andreas |
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| Andreas
NDT Inspector, Specially in the oilfield
Tuboscope Vetco(Deutschland)Gmbh, Germany, Joined Oct 1999, 126 |
Andreas
NDT Inspector, Specially in the oilfield
Tuboscope Vetco(Deutschland)Gmbh,
Germany,
Joined Oct 1999
126
| 16:27 Nov-12-2009
Re: Mag Particle and Senativity check In Reply to Andreas at 16:08 Nov-12-2009 .
For your info the Spec is the API 5A5 and the 5CT.
Regards
Andreas |
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| Rafid Omar López
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Rafid Omar López
| 22:42 Nov-12-2009
Re: Mag Particle and Senativity check In Reply to Paul Skidmore at 14:51 Nov-12-2009 (Opening).
I need the norm ASTM E1316. Somebody has this norm? thanks
My mail is: rafid4@hotmail.com
Kind regards. |
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