Long Range UT v Intelligent Pigging
Long Range UT v Intelligent Pigging
(OP)
We have a leak on a Riser line that is held inside a J-Tube on one of our installations (pipe in pipe). The internal pipe is the one that has leaked.
The question is would long range Ultrasonics be capable of picking up a pin hole leak, ie 3mm diameter hole being the worst case. The defect could potentially be located up to 15m from where the system will be mounted to the riser.
The other option open to us is to use an intelligent pig with a 3mm axial resolution with 64 probes mounted radially.
Any coments/suggestions experiences would be welcomed.
Thanks
The question is would long range Ultrasonics be capable of picking up a pin hole leak, ie 3mm diameter hole being the worst case. The defect could potentially be located up to 15m from where the system will be mounted to the riser.
The other option open to us is to use an intelligent pig with a 3mm axial resolution with 64 probes mounted radially.
Any coments/suggestions experiences would be welcomed.
Thanks





RE: Long Range UT v Intelligent Pigging
RE: Long Range UT v Intelligent Pigging
GWUT
http://www.techcorr.com/testing/ultrasonics.htm
RE: Long Range UT v Intelligent Pigging
Not sure if you still require this information? Many factors effect the resolution of the Guided Wave such as wall thickness, coating, diameter, features (brackets, vents etc..) if you could supply more infomration I may be able to assist further. We have been involved in Long Range UT for about 5 years and have experience on various different types of inspection.
RE: Long Range UT v Intelligent Pigging
http://www.leakzone.com/
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/
RE: Long Range UT v Intelligent Pigging
RE: Long Range UT v Intelligent Pigging
Thanks for the additional info, the intelligent pig located the leak before we had a chance to deploy the long range UT.
Thanks
jim
RE: Long Range UT v Intelligent Pigging
My company has recently been using some very sensitive thermal imagery equipment which is hand held for offshore riser inpection in the gulf of mexico.
In your particular situation,
If the fluid in the inner line is at an elevated temperature and under pressure and is leaking at pressure onto the outer, you will probably be able to pin point the leak using this equipment.
If access to the riser is a problem, you could consider using a team of rope access inspectors to perform the job.
We at oceanteam/Diavaz, Mexico could provide this service for you.
fell free to contact me:
K Madden
Tech Support Eng
kevin.madden@oceanteam.com.mx
RE: Long Range UT v Intelligent Pigging
http://www.rtd-group.com/