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Technical Discussions
ligang feng
NDT Inspector,
China, Joined Jan 2010, 3

ligang feng

NDT Inspector,
China,
Joined Jan 2010
3
02:59 Jan-22-2010
what's this film of rt looks like?



Pipeline 273*7mm

    
 
 
anjafo79
NDT Inspector
Norway, Joined Aug 2009, 204

anjafo79

NDT Inspector
Norway,
Joined Aug 2009
204
11:42 Jan-22-2010
Re: what's this film of rt looks like?
In Reply to ligang feng at 02:59 Jan-22-2010 (Opening).

looks like suck back on the root to me.

    
 
 
Phil
NDT Inspector, Radiation Safety
BINDT, MIAQP, United Kingdom, Joined Mar 2009, 151

Phil

NDT Inspector, Radiation Safety
BINDT, MIAQP,
United Kingdom,
Joined Mar 2009
151
17:31 Jan-22-2010
Re: what's this film of rt looks like?
In Reply to ligang feng at 02:59 Jan-22-2010 (Opening).

Looks the same to me as well

    
 
 
anjafo79
NDT Inspector
Norway, Joined Aug 2009, 204

anjafo79

NDT Inspector
Norway,
Joined Aug 2009
204
18:54 Jan-22-2010
Re: what's this film of rt looks like?
In Reply to Phil at 17:31 Jan-22-2010 .

looks acceptable to me as well with out cross checking wall thickness and accept criteria.

not darker than parent material either i guess

    
 
 
BILL KIESEL
BILL KIESEL
21:15 Jan-22-2010
Re: what's this film of rt looks like?
In Reply to ligang feng at 02:59 Jan-22-2010 (Opening).

looks like local negative reinforcement at the weld root, possable stress riser due to sharp appearance, definite failure point for this weld under extreme stress.

    
 
 
Phil
NDT Inspector, Radiation Safety
BINDT, MIAQP, United Kingdom, Joined Mar 2009, 151

Phil

NDT Inspector, Radiation Safety
BINDT, MIAQP,
United Kingdom,
Joined Mar 2009
151
23:04 Jan-22-2010
Re: what's this film of rt looks like?
In Reply to ligang feng at 02:59 Jan-22-2010 (Opening).

What is this pipeline for, what is flowing through it ?

Also which specification are you working to ?

As this will determine whether or not it is acceptable, as we know the size and wt.

    
 
 
Collin Maloney
NDT Inspector, - Plant Inspector
Applus RTD, Australia, Joined Nov 2000, 147

Collin Maloney

NDT Inspector, - Plant Inspector
Applus RTD,
Australia,
Joined Nov 2000
147
05:21 Jan-23-2010
Re: what's this film of rt looks like?
In Reply to ligang feng at 02:59 Jan-22-2010 (Opening).

look suspiciously like a burn through given that the profile of the root bead changes from thin to wide either side of the discontinuity.
I would like to know the welding technique used i.e. stove pipe. The cap weave looks typical of a stove technique. What was the o'clock position?

    
 
 

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