Step back for a minute from the wording of QW-194. Look at paragraph QW-144; “Visual examination as described in QW-194 is used to determine that the final weld surfaces meet specified quality standards.” Note that this paragraph does not state “as per Section IX” or “as per QW-XXX”. It refers to “specified quality standards.” In my opinion this statement is the result of Section IX being applied to/specified by numerous design Codes or other standards which modify requirements of Section IX. Ultimately, the manufacturer (ref. QW-103.1) is responsible for the quality of welding, as noted by Mr. Pieper. Why an employer would accept welding of lessor quality of welding during the test phase than required for work to be performed is beyond my comprehension. This is an invitation to disaster during production welding. (Unless the guy is your cousin or brother-in-law.)
Further, looking at the wording of QW-194, what exactly do you interpret “complete fusion” to mean? Excessive undercut, as defined in the applicable Code or your quality system, is in effect, incomplete fusion.
I also think you need to consider that if one Code/Standard, referencing Sc IX, is more lenient than another is some regard, why would you tie a manufacturer producing equipment to the former, to comply with the more restrictive standard? This lunacy has permeated the petro-chem industry and made fabrication of ordinary equipment (minimal service requirements) inordinately expensive and difficult.
John A. Henning
Welding & Materials
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kumar
Sent: Tuesday, November 26, 2013 3:19 AM
To: materials-welding
Subject: Re: [MW:19375] Re: SEC-IX RT acceptance
Agree mr. Joseph...but at the time of test the governing code is only sec.ix..then if the other party argue like this (sec.ix only want complete fusion and penetration),...then how to resolve ?..this is the issue..just for info...
On Nov 26, 2013 1:12 PM, "Roy Joseph" <royjoseph04@gmail.com> wrote:
Mr Kumar,
Other Sections of the Code may specify different requirements than those specified by Section IX and Such requirements take precedence over those of Section IX, and the manufacturer or contractor shall comply with them.
so 2mm undercut can not be accepted by any code.
On Tue, Nov 26, 2013 at 12:28 PM, Kumar <sk7920541@gmail.com> wrote:
Hai
Noted the responses from all and thanks..but still if project spec. Is silent and sec.ix doesnt have any ruling on other defects (porosity, sla g , under cuts, uf,etc..then a welder on test making 2mm u/c in test but then he passed and send to asme b 31.3 project where 1mm is the maximum u/c...that itself is contradicting...I feel sec.ix criterias must be strong where in most cases we rely on welders (random ndt)...please share ur opinions
Thanks in advance,
Kumar
On Nov 25, 2013 2:54 PM, "hpi001" <info@pieper-qsi.nl> wrote:
Dear Kumar,
Nothing mentioned in ASME Section IX regarding undercuts, under-fill etc.
Because ASME is based on manufacturers responsibility it would be the responsibility of the manufacturer to determine it's own requirements for this kind of defects, this can be classified as Good Workmanship.
In my opinion this should be discussed in front before start of production at a manufacturers workshop (for example during a kick-off meeting) in order to avoid any discussions afterwards.
Regards Herman Pieper
Op maandag 25 november 2013 08:21:52 UTC+1 schreef sunilkumar kundothara:
Dear All,
When conducting WPQT(welder performance qualification test), the
acceptance criteria for both visual & RT is SEC.IX, but the these are
seemed to be much short & liberal. like,
Visual- complete fusion & penetration only required for visual, then
what about undercuts, underfill, re-inforcement height etc ?
RT- only chart given is for porosity comparison (attached herewith).
what about slags and other defects?
If anybody has more details of the above part of SEC.IX, please share.
due to these reasons some times we find difficulty to judge sub-con
welder performances.
could we refert the construction code of the intended project in that case?
Appreciating your valuable feedbacks.
Thanks in advance,
Kumar
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
______________________________________________________________________
The information in this email is confidential, and is intended solely for the addressee(s). If you are not the intended recipient of this email please let us know by reply and then delete it from your system; you should not copy this message or disclose its contents to anyone. The internet can not guarantee the integrity of this message. HAMON (and its subsidiaries) shall (will) not therefore be liable for the message if modified.
______________________________________________________________________
No comments:
Post a Comment