Thank you, Andrew.
Option No. 3 seems to be the most reasonable solution.
I will propose options 2 & 3 to the project management (so they choose option No.3).
We had four EPC contractors for our process plant project, and we did this. We made a database of all WPSs required and identified those WPSs which were common among EPC contractors. This way, we reduced the number of WPS/PQRs required. After approval, they were allowed to use any of those WPSs...
Thank you all for your replies.
For clarification, this is where we are at the moment:
We are the owner of the plant (Quality Dep.)
Caustic concentration and metal temperature show the welds to be in Area B of Figure 1 of NACE SP-0403.
Additionally, our specification requires PWHT at 630C for...
Thank you, EdStainless, for your reply.
Update:
Today, I found out that originally, they have been following the specification and performing PWHT acc. to NACE SP-0403. The reason why they have changed things and reduced the holding time & temperature has been due to excess distortion and...
Dear all,
We have a situation in our project (petrochemical plant construction) where in our caustic service piping (mostly 4-6mm wall thickness and small OD), all the weldments have been post-weld heat-treated, but it has been done acc. to ASME B31.3 (not as per NACE SP-0403 requirements). The...
