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- since 1996 -

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Technical Discussions
BHASKAR KALE
BHASKAR KALE
03:59 Mar-07-2011
PAUT Calibration Block

Greeting ,
I am in the process of start the PAUT on the piping weld joint to replace RT, basically pipe size range from 1” to 36” and all the size have the sch40,80,120and 160 plus some special thickness.
I propose the pipe size for PAUT from 4” and above.I have both P1 and P8 material and some other special material also.
As per ASME sec V T-434.3 piping calibration block is required same nominal size and schedule.
I required your advice that
1. Can we take the benefit of curvature from 0.9 to 1.5 times the basic calibration block diameter for the curvature as per ASME Sec V T-434.1.7.2?
2. How about the different pipe Sch ? Is it required separate calibration block for pipe every different SCH with same pipe diameter?(e.g 8” pipe with S40,S80,S120 etc)
please advice ,for your information I am sending the list of pipe size required to phase array please give some advice to minimize the no of calibration block to cover the all pipe size.

BHASKAR KALE
bmkale@gmail.com

    
 
 Reply 
 
Nguyen Trong My
Director,
Vietnam Inspection Solutions Co., Ltd, Vietnam, Joined May 2000, 22

Nguyen Trong My

Director,
Vietnam Inspection Solutions Co., Ltd,
Vietnam,
Joined May 2000
22
16:24 Mar-08-2011
Re: PAUT Calibration Block
In Reply to BHASKAR KALE at 03:59 Mar-07-2011 (Opening).

Hello BHASKAR,
1. For pipe size from 1" to 4 " you can also use PAUT using small-diameter pipe scanners, such as COBRA SCANNER of Olympus NDT or BRACELET of Phoenix etc.
2. You can take the benefit of Code case 2638 Alternative Piping Calibration Blocks for UT to prepare your calibration blocks. Now the same tolerances and range on block curvature as for vessel welds are allowed, see Fig.-434.1.7.2. Additionally thickness, T, may be + / - 25% of the component thickness (see "ASME CALIBRATION BLOCK FOR PIPING " messages of Nigel et al. in this forum).
Nguyen Trong My

    
 
 Reply 
 
BHASKAR KALE
BHASKAR KALE
01:50 Mar-09-2011
Re: PAUT Calibration Block
In Reply to Nguyen Trong My at 16:24 Mar-08-2011 .

Thank you very much, much appreciate your swift replay and now clear all my concern and really now i can save lot of work and cost.
Bhaskar

    
 
 Reply 
 
jacky
jacky
05:33 Aug-08-2016
Re: PAUT Calibration Block
In Reply to Nguyen Trong My at 16:24 Mar-08-2011 .

hello,

I want to know what kind of block you use for wedge delay, sensitivity calibration, because for piping inspection our wedge is curvture, so our block should not be flat.

please advice us, we have same job too.

regards
jacky

    
 
 Reply 
 
Andrew Brewis
Andrew Brewis
08:50 Aug-08-2016
Re: PAUT Calibration Block
In Reply to jacky at 05:33 Aug-08-2016 .

Hi Jacky,

At Phoenix ISL we always recommend that customers perform a calibration with the wedge they are going to carry out the inspection with. This is why we manufacture a whole range of contoured calibration blocks for Phased Array which allow for Sensitivity, Velocity, Wedge Delay and also TCG calibrations. If you want further information please feel free to contact me.

Regards Andrew
abrewis@phoenixisl.com

    
 
 Reply 
 
Andrew Robinson
Sales,
PH Tool Reference Standards, USA, Joined Feb 2012, 4

Andrew Robinson

Sales,
PH Tool Reference Standards,
USA,
Joined Feb 2012
4
16:09 Aug-08-2016
Re: PAUT Calibration Block
In Reply to jacky at 05:33 Aug-08-2016 .

Jacky and Bhaskar,

Contoured calibration blocks for pipe inspection are also available from PH Tool in the U.S. Certified calibration blocks with curved scanning surfaces are manufactured for general equipment setup and calibration for axial or circumferential scanning. Pipe calibration blocks made in accordance with ASME Sec V requirements are also available with EDM notches and SDH reflectors. I would be happy to provide more information upon request.

Best regards,
Andrew

    
 
 Reply 
 
Bruno
Student,
Argentina, Joined Jun 2013, 21

Bruno

Student,
Argentina,
Joined Jun 2013
21
21:10 Aug-10-2016
Re: PAUT Calibration Block
In Reply to Andrew Robinson at 16:09 Aug-08-2016 .

Andrew, can you show some pictures of one of these blocks?

    
 
 Reply 
 
Andrew Robinson
Sales,
PH Tool Reference Standards, USA, Joined Feb 2012, 4

Andrew Robinson

Sales,
PH Tool Reference Standards,
USA,
Joined Feb 2012
4
21:49 Aug-12-2016
Re: PAUT Calibration Block
In Reply to Bruno at 21:10 Aug-10-2016 .

zoom image
Bruno,

Certainly. Please see some images attached.

Thanks,
Andrew
    
 
 Reply 
 
srinivas
NDT Inspector,
kalva engineers pvt ltd, India, Joined Oct 2012, 33

srinivas

NDT Inspector,
kalva engineers pvt ltd,
India,
Joined Oct 2012
33
07:29 Aug-16-2016
Re: PAUT Calibration Block
In Reply to BHASKAR KALE at 03:59 Mar-07-2011 (Opening).

sir
why dont you go for ASTM E 2491 standard

    
 
 Reply 
 

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