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Technical Discussions
fazhdary
NDT Inspector,
tehran, Iran, Joined Dec 2019, 5

fazhdary

NDT Inspector,
tehran,
Iran,
Joined Dec 2019
5
11:33 Jan-23-2020
ultrasonic test high thk

Ultrasonic test of the tank with a thickness of 80 mm whether to test or calibrate?

 
 Reply 
 
mahdy
NDT Inspector,
tehran, Iran, Joined Dec 2019, 5

mahdy

NDT Inspector,
tehran,
Iran,
Joined Dec 2019
5
14:37 Jan-23-2020
Re: ultrasonic test high thk
In Reply to fazhdary at 11:33 Jan-23-2020 (Opening).

Ultrasonic test of the tank with a thickness of 80 mm whether to test or calibrate?

 
 Reply 
 
mahdy
NDT Inspector,
tehran, Iran, Joined Dec 2019, 5

mahdy

NDT Inspector,
tehran,
Iran,
Joined Dec 2019
5
18:33 Jan-25-2020
Re: ultrasonic test high thk
In Reply to mahdy at 14:37 Jan-23-2020 .

zoom image



The 100mm~70mm thk tank has 200% ut&paut ....no process What is the probe selection and frequency؟
 
 Reply 
 
Ali
NDT Inspector,
Iran, Joined Mar 2013, 114

Ali

NDT Inspector,
Iran,
Joined Mar 2013
114
17:42 Jan-27-2020
Re: ultrasonic test high thk
In Reply to mahdy at 18:33 Jan-25-2020 .

You did not clear about material type , bevel configuration, welding process but roughly you can get good results if perform inspection in half skip only(if you have access to inside of vessel) 2 S-scan from inside and and 2 S-scan from out side (at least 4 sectorial scan) to full coverage of weld volume and HAZ or 4 sectorial scan with 2 different offset from just outside (depends on bevel configuration you can add TOFD ).ulsally 5MHz PAUT probes (5L64 A2) with 32 elements active aperture will be enough if material grain is happy with ultrasonic waves(like ASTM A516 series).try it on the cal block and demonstration block as per ASME code before start to work.

 
 Reply 
 

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