Skip to main content

[MW:4957] Comparision between ISO15614 Part 1 and AWS D1.1 PQR requirements

You can't write a WPS based on the ISO 15614 PQR. however you may use both WPS/PQR from other standards, provided the designer takes the responsibility based on the specific structure or service conditions or both (refer para 4.1.1.2 of AWS D1.1). alternatively you can use SWPS provided in AWS D1.1 as prequalified procedures.

From: Yeleswarapu, Ravi [mailto:Ravi.K.Yeleswarapu@c-a-m.com]
Sent: Monday, April 26, 2010 12:08 PM
To: Bathula Raghuram (Mumbai - PIPING)
Subject: Comparision between ISO15614 Part 1 and AWS D1.1 PQR requirements

Hi Raghu,

 

Could you please advise on “comparison between ISO15614 Part 1 and AWS D1.1 PQR requirements”.

Also can a WPS be as per AWS D1.1 and PQR be as per ISO15614 Part 1?

 

Am not able to post this on blog.

 

Regards,

 

 Ravi Yeleswarapu

 Quality Manager, HSSE - MR

 Process Systems

cid:image001.gif@01C8885F.F6A4DF50

 

 


Comments

Popular posts from this blog

Re: [MW:34105] SA266 GR4N 4 Cycle SPWHT

Hi,  You are correct, Minimum refers to the one cycle for which this part will expose until final work shop PWHT. hence mill test certificate shall include this.  Max. SPWHT, refers to additional cycles of heat treatment that are reserved for future repairs during equipment lifetime.  Again, these simulated no. Of cycles shall be specified in MTC.  The idea is we need to make sure that steel mechanical properties are not compromised upon exposure to multiple repairs (i e 4 cycles in your case).  One could say, if steel is subjected to 4 cycles and is ok, then it should by defacto be good for one cycle, yet, this is wrong assumption cause mechanical problems and microstructure of materials varies accordingly based on no. Of cycles for which material will expose. This is apparent in alloy steel and especially for impact test values as an example.  In your case, this forged CS with properties before PWHT can be understood to be " as forged" condition (i.e. Wit...

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...