testing of inaccessible welded joints

[Ali Asghari]

Dear All.

Does anybody know there is NDT method that can inspected welded joints which are buried and not accessible?our concern is about finding of construction defects either surface and internal that have a good detect ability for linear ones particularly Transverse Crack.

Regards.

 

[Lakshmankumar Bayyana]

If it is a pipe line, best option is to do hydro test with 1.25 times of the working pressure to ensure the integrity 

Also can go with ultrasonic pig in case of pig possible lines

Thanks and Regards 

Lakshman kumar. B 

+91 9440031459

Sent from my iPhone

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[Ali Asghari]

Dear Kumar.

this line is piggable but I don't think the pig with considering pf it's velocity don't have ability to scan welds?if you know information or experience, please let me know.

pressure testing can only detect defects that cause leak or rupture, and other rejected defects can be undetected.

Regards.

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[sandeep kumar]

for smaller length, a surface inspection with boroscope can be possibly made. Now a days boroscope with robot manipulator (pipe crawler) also available which can be remotely controlled although a costly matter.

https://www.ryonic.io/products/pipeline-inspection-crawlers/

The above system can be used upto 500 mm however diameter restriction is applicable.

http://aitproducts.com/borescope-pipe-camera-rentals/pipe-camera-rental/pipeline-inspection-camera.html

Shared more details about the joint types, pipe dia length etc would be better for the understanding.

Thanks & regards

Sandeep Kumar

[Ali Asghari]

Thank you for responding but our line is long& we want to know about internal defects and visual in that situation doesn't have good sensitivity.

Actually, I am wondering about mechanised ultrasonic that syncronised with crawler.

If you know any equipment or company that have simillar technology.

Regards.

[pradip kumar Sil]

Borodcope you can identify internal defect. otherwise pressure test

[Ali Asghari]

Do you have any file for presenting this method?

I said in previous emails, pressure testing may not detect some rejected defects that don,t cause leak.

Regards.

[Shashank Vagal]

Try Crawler RT

Best Regards,

Shashank C Vagal (Quality Adviser), (+91) 8082395502, 8779046302,

NEO METAL-ANALYST & NDT SERVICES

·       A-25, Geet Siddhi, Boradevadi, Moshi-Haveli, PCMC, Pune 412105

·      301, PRATHAMESH, M G Rd – Mahant Rd, Vile Parle East, Mumbai 400 057 INDIA

www.neometalanalystndt.com / enq...@neometalanalystndt.com / nach...@yahoo.com

[Ali Asghari]

It is not possible since all of joints butied.

Does anybody know about high resolution MFL would be useful in evaluting of joint

Regards.