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Technical Discussions
Eric Chen
Engineering,
GE Aviation, China, Joined Nov 2002, 7

Eric Chen

Engineering,
GE Aviation,
China,
Joined Nov 2002
7
07:21 Feb-21-2008
AWS D1.1 PT/MT acceptance limit

AWS D1.1 does not specify the acceptance critiera for PT/MT, just one sentence says refer to table 6.1 which is visual inspection acceptance critiera. If a porosity(non piping porosity) was found in Cyclically Loaded Nontubular Connections, How to evaluate it? Can some one explain the PT/MT acceptance critiera?

Thanks!

Eric Chen


    
 
 
chris s
chris s
07:16 Feb-21-2008
Re: AWS D1.1 PT/MT acceptance limit
----------- Start Original Message -----------
: AWS D1.1 does not specify the acceptance critiera for PT/MT, just one sentence says refer to table 6.1 which is visual inspection acceptance critiera. If a porosity(non piping porosity) was found in Cyclically Loaded Nontubular Connections, How to evaluate it? Can some one explain the PT/MT acceptance critiera?
: Thanks!
: Eric Chen
------------ End Original Message ------------

eric,
what you will need to do is apply the limits in table 6.1 as your acceptance criteria. look in the commentary at c-6.10 note that you do not read bleed out. only the size of the discontinuity.



    
 
 
DEEPAK SAXENA
DEEPAK SAXENA
09:59 May-31-2008
Re: AWS D1.1 PT/MT acceptance limit
please provide visual acceptance criteria for porosity in TIG welding


    
 
 
mustafa GONULAL
Engineering,
CIMTAS / ENKA, Turkey, Joined Jun 2008, 8

mustafa GONULAL

Engineering,
CIMTAS / ENKA,
Turkey,
Joined Jun 2008
8
05:26 Jun-04-2008
Re: AWS D1.1 PT/MT acceptance limit
----------- Start Original Message -----------
: please provide visual acceptance criteria for porosity in TIG welding
------------ End Original Message ------------

Aceeptance Limit for PT/MT in AWS is defined as
CJP Groove welds in butt joints transverse to the direction of computes tensile stress shall have no visible piping porosity.
For all other groove welds and fillet welds, the sum of visible piping porosity 1mm or greater in dia. shall not exceed 10mm in any linear inch of weld and shall not exceed 20mm in any 12in. length of weld.


    
 
 
mike
mike
01:32 Aug-23-2014
Re: AWS D1.1 PT/MT acceptance limit
In Reply to chris s at 07:16 Feb-21-2008 .

AWS c-6.10 only refers to clause 6.14.4 for MT test which is very general. It basically ask for app the acceptance criteria that are in Section 6, part C, whichever is applicable. Can any one elaborate what "whichever applicable" mean? In section 6, partc there are requirements for UT and RT. Should one is applicable, ut or rt?

thanks,

    
 
 
mike
mike
01:47 Aug-23-2014
Re: AWS D1.1 PT/MT acceptance limit
In Reply to mike at 01:32 Aug-23-2014 .

AWS c-6.10 only refers to clause 6.14.4 for MT test which is very general. It basically says " acceptance shall be in conformance with Section6, part C, of this code, whichever is applicable". Can any one elaborate what "whichever applicable" mean? In section 6, part C there are only requirements for UT and RT tests. which one is applicable, UT or RT?
I assume RT, any comment?

thanks,

    
 
 

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