Skip to main content

Re: [MW:12493] ASME SEC IX Code Issue

By Materials & Welding
Dear Limesh

As per ASME Sec IX , Pre heat is essential variable not supplementary essential variable hence it is mandatory to observe the requirement of QW406.1

Inter pass temperature is supplementary requirement. However it is not applicable if PWHT performed above upper transformation temp i.e Normalizing, solution annealing as per QW 406.3

Hence in your case It doesn't give exemption to the requirement for Inter pass temperature


Best Regards

Rajesh Patel
Executive Engineer  - Materials Technology, QA/QC & Standards

Linde Engineering India Pvt. Ltd.
'Linde House'
Opp: VUDA Office,VIP Road, Karelibaug,Vadodara - 390018,India.
Tel.: +91 265 3056706, Fax: +91 265 23335213, Mobil: +91 9909953459
Rajesh.Patel@linde-le.com, www.linde-india.com

This e-mail is confidential. If you are not the intended recipient, please notify us immediately. You should not disclose its contents to any other person nor use it for any purposes.



From:        usman gani <usmangania123@gmail.com>
To:        materials-welding@googlegroups.com
Date:        21-09-2011 15:25
Subject:        Re: [MW:12491] ASME SEC IX Code Issue
Sent by:        materials-welding@googlegroups.com



On 9/16/10, george.dilintas@gr.bureauveritas.com
<george.dilintas@gr.bureauveritas.com> wrote:
> According to ASME IX, QW-406.3, when the Preheat is a supplementary
> essential variable, an increase of more than 55 degC in the max Interpass
> temperature requires requalification.
> I would suggest you read carefully QW 406.1 to  406.3
>
> Dr. G. Dilintas - Authorized Inspector Supervisor
> I&F Regional Technical Manager
> Bureau Veritas Piraeus - Greece
> Tel: +30 210 40 63 113/4
> Fax: +30 210 40 63 118
> Cell: +30 69 44 64 62 04
>
>
>
>              limesh M
>              <limesh78@gmail.c
>              om>                                                        To
>              Sent by:                  materials-welding@googlegroups.com
>              materials-welding                                          cc
>              @googlegroups.com
>                                                                    Subject
>                                        [MW:6999] ASME SEC IX Code Issue
>              14/09/2010 15:43                                          Ref
>
>
>              Please respond to
>              materials-welding
>              @googlegroups.com
>
>
>
>
>
>
> Dear All,
> Design Code: ASME B31.3     Welding Code: ASME SEC IX
> I have a Low temperature carbon steel impact tested PQR with a PWHT range
> of 600ā°Ā±10ā°C.Is this condition giving an exemption for me on QW406.3 to
> prepare a WPS with maximum interpass temperature of 200ā°C.
> Maximum interpass temperature observed during specimen welding: 140ā°C
>
> Regards,
>
> Limesh
>
>
> --
> 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/
> 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.
>
> --
> 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/
> 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.
>

--
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/
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.

--
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/
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.

Comments

Post a Comment

Popular posts from this blog

Materails FAQs

By Materials & Welding
Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? (asked by: boris.vielhaber@vait.com) A: DIN Nr. = 2393 T.2, 2394 T.2, EN 10025 W. Nr. DIN 17007 = 1.0038 Design DIN 17006 = RSt 37-2, S235JRG2 (Fe 360 B) Q: What is St DIN 2391 BK material? (asked by: dmcandrews@automaticstamp.com) A: Precision steel tubes, cold-finished/hard. Q: What is C.D.W. Boiler Tube? (asked by: montydude123@yahoo.com) A: Cold Drawn Welded Boiler Tube. Q: WHAT IS W.Nr. 1.4301? PLS TELL US IN EASY LANGUAGUE (asked...
21 comments
Read more

Heat tint (temper) colours on stainless steel surfaces heated in air // Heat tint

By Materials & Welding
Introduction The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change.   Oxidation resistance of stainless steels However, there are several factors that affect the degree of colour change and so there is no a single table of colour and temperature that represents all cases. The colours formed can only be used as an indication of the temperature to which the steel has been heated. Factors affecting the heat tint colours formed Steel composition The chromium content is the most important single factor affecting oxidation resistance. The higher the chromium, the more heat resistant the steel and so the development of the heat tint colou...
Post a Comment
Read more

Re: [MW:10788] ON PLOT PIPING & OFF PLOT PIPING

By Materials & Welding
Piping systems involved for the flow lines and gathering lines from the well head isolation valve to the production facility or processing plant isolation valve are determined as OFF PLOT. ON PLOT defines piping system in the processing plant and production platform. ANSI/ASME B31.4 applies for off plot piping system. B31.4 allows the use of either API 1104 or ASME section IX (as appropriate). However, occasionally, a very small system such as piping within 500 feet of a processing plant (some client also said 400 feet) may be declared B31.3 rather than B31.4. When B31.3 is invoked, only ASME Section IX is used. before you decide which code to use for welding procedure and/or welder qualification for pipe welding, you have to know the design and construction code applicable to the system. Please read far enough into scope and diagram illustrating the application of either B31.3 and B31.4 hope this helps rgds 2011/4/21 pradip kumar sil < pradipsil@gmail.com > Dear all, ...
Post a Comment
Read more