Difference between WPS and PQR
Difference between WPS and PQR
(OP)
Good day everyone,
I recently qualified as a welding inspector but am still confused between a WPS and a PQR. Which is drawn from which or which comes first?
Thank you
I recently qualified as a welding inspector but am still confused between a WPS and a PQR. Which is drawn from which or which comes first?
Thank you





RE: Difference between WPS and PQR
Welding Procedure Specificaiton
This states the essential and non-essential variables needed to produce the weld joint.
PQR
Procedure Qualification Record
This is a record of a weld produced using a specific WPS demonstrating that the completed weld meets the specified requirements for the weld.
Are you sure you are qualified? This is pretty basic stuff.
rp
RE: Difference between WPS and PQR
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Difference between WPS and PQR
Here you can find a point to start http://www.lloydsregister.co.uk/Images/Lloyd's%20Register%20Welding%20Procedure%20%26%20Welder%20Qualification%20Review%20RP_tcm240-236457.pdf.
Good luck!
El que no puede andar, se sienta.
RE: Difference between WPS and PQR
RE: Difference between WPS and PQR
Am I right?
I have to admit, I am not an ASME Section IX expert. And, although I have dealt with for decades, I haven't had to deal with it much in at least a decade, so take this with a grain of salt. I think what they are trying to say is that it is possible to have a single PQR support several WPSs; that is, as per the example, a PQR that qualified a plate in the G position can also be used to qualify the WPSs for other positions. I am guessing this is because the position is not an essential variable for the WPSs in question. Put another way, one could take a PQR for a 1G plate and produce WPSs for other positions, provided the essential variables for these WPSs are all within allowable ranges.
rp
RE: Difference between WPS and PQR