Re: [MW:32945] PWHT of blind flanges not having welding

No Welding thus PWHT not required

Kind Regards

Gerry lourens

Regards,

Gerry Lourens Welding Engineer

M: +27 62 192 1207 T: +27 17 631 5282 F: +27 (0)86 616 9701 E: gerry.lourens@newage-eng.com A: 3 York Street, Evander, 2280


Disclaimer Copy: CG Africa Holdings(Proprietary) Limited (Company Number 2015/235049/07), herein referred to as CG Africa Holdings, is a South African company whose Registered Office is CG Africa Holdings Head Office: 845 16th Road, Midrand, Johannesburg. CG Africa Holdings has direct interests in Prommac (Company Number 2005/040679/07), New Age Engineering Solutions (Company Number 2017/165/330/07) and Kumunyack (Company Number 2015/400060/07). This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Our organization and all subsidiary group companies accept no liability for the content of this email, or for the consequences of any actions taken on the basis of the information provided, unless that information is subsequently confirmed in a document signed by an authorized representative. No employee or agent is authorized to conclude any binding agreement or make any commitment on behalf of CG Africa Holdings and any associated group companies with another party by email without express written confirmation by an authorised Director.

On Mon, Feb 28, 2022 at 10:33 AM Muhammed Ibrahim PK <ibratech@gmail.com> wrote:

Gentlemen,

Please advice PWHT required or not for small blind flanges also if the vessel is in sour service.The blinds having no welding on it.

As per my understanding PWHT is only for weld, not for base metal.

If welding on blinds like davit, manway handle can be justified. Is it required for other blinds not having any weld on it.

Experts please provide your view on it.

Reg,
Ibrahim

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CALOPgmOMLrK_C5nWBaLNRqTSfCd24jm76qDB%2B0EoOoXk7J%3Dayw%40mail.gmail.com.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAFgehWciz4Sn64Ed_9oZJxK-e1G84TfX8D9C6HSfqc7Ys%2BzKOw%40mail.gmail.com.

Materails FAQs

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...

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

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...

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

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, ...

Materials & Welding

Search This Blog