Skip to main content

Re: [MW:13739] ECA design

By Materials & Welding
Hi,

Please refer Clause 6.4.8 of AS2885.2, CTOD tests are only specified when the criteria for
acceptance of girth weld discontinuities is Tier 2 and where the thickness is greater than 13mm
CTOD tests are also necessary for Tier 3 acceptance criteria for thickness lesser than 13mm.

CTOD testing shall be performed in accordance with AS 2205.7.3 whenever an ECA is used to
develop weld flaw acceptance criteria.

This must be defined in Client spec and you should have envisaged CTOD tests while considering
welding qualification.


Regards
Manpreet Singh



On Fri, 17 Feb 2012 17:17:28 +0530 wrote
>Dear Expert

Now I'm working with pipeline specification (AS 2885.2). I have

submitted WPS to client for approval with out CTOD test but client

said " I have to do CTOD test). because project spec. state ") CTOD

testing shall be performed in accordance with AS 2205.7.3 whenever an

ECA is used to develop weld flaw acceptance criteria or whenever the

base material is CTOD tested.".

My question is

1."How to know that which piping class was designed with ECA and what

project document will show this requirement?' Because I try to find in

many project spec. but I can't see (may be I miss) so why client want

me to do CTOD test.

2. Could you please explain when we have to employ ECA?

3. In project spec. said " when an ECA is employed, the NDT method to

be used shall be AUT. ", why RT can't use?



Please help me by share your experience.

Best Regards

Mr. SOLOMON

QA/QC Engineer



--

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.


Follow Rediff Deal ho jaye! to get exciting offers in your city everyday.

--
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