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Technical Discussions
Pratik Wagh
Consultant,
NDT Video Library on YouTube, USA, Joined Oct 2011, 22

Pratik Wagh

Consultant,
NDT Video Library on YouTube,
USA,
Joined Oct 2011
22
06:17 Aug-14-2019
Pipe Calibration Blocks

What is the minimum pipe calibration block length for Phased Array UT? ASME SEC V says 8" or 8T whichever is greater. But the block manufacturer says 12" is the minimum.

    
 
 Reply 
 
William Jensen
Other,
IHI Southwest Technologies, Inc., USA, Joined May 2017, 64

William Jensen

Other,
IHI Southwest Technologies, Inc.,
USA,
Joined May 2017
64
16:13 Aug-14-2019
Re: Pipe Calibration Blocks
In Reply to Pratik Wagh at 06:17 Aug-14-2019 (Opening).

It is likely that your block manufacturer needs the additional length for working on the block.

    
 
 Reply 
 
Pratik Wagh
Consultant,
NDT Video Library on YouTube, USA, Joined Oct 2011, 22

Pratik Wagh

Consultant,
NDT Video Library on YouTube,
USA,
Joined Oct 2011
22
17:10 Aug-14-2019
Re: Pipe Calibration Blocks
In Reply to William Jensen at 16:13 Aug-14-2019 .

That makes sense.

    
 
 Reply 
 
Paul Holloway
Consultant, UT Level 3
Holloway NDT & Engineering Inc , Canada, Joined Apr 2010, 181

Paul Holloway

Consultant, UT Level 3
Holloway NDT & Engineering Inc ,
Canada,
Joined Apr 2010
181
18:42 Aug-14-2019
Re: Pipe Calibration Blocks
In Reply to Pratik Wagh at 17:10 Aug-14-2019 .

Pratik,

You can also reference Fig T-434.3-2 for the alternate block where there is no minimum length defined; merely that the block length and arc be adequate.

This was one of the design considerations for the ERVW piping blocks from PH Tool.

https://store.phtool.com/all-products/asme-style-ervw-piping-calibration-blocks-ervw-pipe-sdh/

Paul

    
 
 Reply 
 

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