WPS AND PQR
WPS AND PQR
(OP)
I was provided with a WPS and a PQR. I was looking them over and found a couple differences and would like a second opinion on it.
Page 1 of the WPS and page one of the PQR, under QW-402, does it matter that the thickness is different, the root spacing is also different?
On WPS page 1 still, under QW-405 it says all under positions, but on the PQR under position it says VERTICAL 3G, that is wrong?
If you find any other mistake, difference or discrepancy please let me know.
thanks in advance for all your help.




Page 1 of the WPS and page one of the PQR, under QW-402, does it matter that the thickness is different, the root spacing is also different?
On WPS page 1 still, under QW-405 it says all under positions, but on the PQR under position it says VERTICAL 3G, that is wrong?
If you find any other mistake, difference or discrepancy please let me know.
thanks in advance for all your help.









RE: WPS AND PQR
RE: WPS AND PQR
If you do not understand the basics of ASME IX you should not be reviewing documents.
Regards,
Shane
RE: WPS AND PQR
RE: WPS AND PQR
RE: WPS AND PQR
RE: WPS AND PQR
RE: WPS AND PQR
Read your post fine.
Your questions show that you do not understand the code and you want someone to do your work for you.
If you have the knowledge and experience to allow you to review quality documentation then you do not come on an internet forum to ask for a second opinion.
If you had read and understood the Sections of ASME IX you have quoted you would realise there is nothing wrong with the issues you are concerned about.
Just as an aside, IMHO the WPS is useless - waste of paper.
Regards,
Shane
RE: WPS AND PQR
RE: WPS AND PQR
RE: WPS AND PQR
WPS states base metal qualified 3/16" - unlimited. How is it unlimited?
Shielding gas used for PQR was 75/25, but WPS states 100% CO2.
RE: WPS AND PQR
There are that many issues with both the WPS and PQR I couldn't be bothered commenting,
Cheers,
Shane
RE: WPS AND PQR
RE: WPS AND PQR
so, do I reject this altogether? Request new ones?
RE: WPS AND PQR
RE: WPS AND PQR
RE: WPS AND PQR
RE: WPS AND PQR
RE: WPS AND PQR
I am getting soft in my old age so I will offer you some advice.
The reason we have welding procedures is to ensure "sound weld repeatability".
In plain English that means we provide the welders with minimum and maximum parameters on the WPS so if they stay within those parameters there is a good chance you will get a sound weld over and over again.
The WPS you have provided is a joke and either your contractor doesn't have a clue or they think you (the client) don't.
Giving a WPS to a welder that lists multiple wire diameters, multiple positions and multiple thicknesses is a recipe for disaster.
"Guys, just weld however you want, we have every possibility covered in our one page special WPS" ?????
I have had a brief review and here are some of the major concerns you need to look at:
1 Preheat
2 Material Thickness ( noted by David)
3 Weld Deposit thickness
4 Wire Feed Speed
5 Gas composition (noted by David)
6 Amps / Volts / Travel Speed
7 Tensile results (noted by A.Clark)
8 GMAW Transfer mode ?
9 PQR not listed on WPS ?
Regards,
Shane