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- since 1996 -
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Technical Discussions
Dalibor Aleksoski
Macedonia, Joined Aug 2013, 7

Dalibor Aleksoski

Macedonia,
Joined Aug 2013
7
03:25 Aug-20-2013
Phased Array Detection Capability

Gents

Have someone experience at weld inspection, with main target on detection any corrosion, grooving on the ID, HAZ and base material up to 1 inch on pipe lines with combination of sectorial and angled linear groups. I need to inspect pipelines 23 mm thick. I have a probe 5L64 A12, Olympus made, What are the detection capability, etc.

Thanks, Regards

 
 Reply 
 
MAL HILL
United Kingdom, Joined Jun 2012, 14

MAL HILL

United Kingdom,
Joined Jun 2012
14
11:44 Aug-20-2013
Re: Phased Array Detection Capability
In Reply to Dalibor Aleksoski at 03:25 Aug-20-2013 (Opening).

TOFD is great for internal corrosion- as long as the external surfaces adjacent to the weld\HAZ are are smooth.Ive detected \resolved 1\2mm isolated corrosion on 12mm pipe -large areas of attack to the root are no problem-With snub nosed 15mhz specialist Phoenix probes 7mm pipes (focus on back wall) are even possible-Proved out with a suitable test piece

 
 Reply 
 
Dalibor Aleksoski
Macedonia, Joined Aug 2013, 7

Dalibor Aleksoski

Macedonia,
Joined Aug 2013
7
23:52 Aug-20-2013
Re: Phased Array Detection Capability
In Reply to MAL HILL at 11:44 Aug-20-2013 .

Thanks for the informations. I also prefer TOFD for corrosion/erosion detection. Only in my case I am very limited to use it, as a have to inspect elbows and I am limited to on side inspection only.
Regards

 
 Reply 
 
MAL
United Kingdom, Joined Jun 2012, 14

MAL

United Kingdom,
Joined Jun 2012
14
10:04 Aug-21-2013
Re: Phased Array Detection Capability
In Reply to Dalibor Aleksoski at 23:52 Aug-20-2013 .

Some companies orientate the TOFD probes parallel with the direction of travel (90 degrees turned to normal orientation) and tell the software that this is the orientation
Then you can scan large bends in bands along the bend-No good for small bore pipes though!!

 
 Reply 
 

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