Continuation of the blog ASME BPVC SECTION IX WELDING_TRAINING - PART 6
Please see example in the below tables in which how can we come to a conclusion of the number of PQR tests required.
In a project we collected the details (for deciding the PQR requirements) as below.
From the above data the PQR requirements are derived as in the below table.
Now may be there is a question in your mind why for the material carbon steel - water line and carbon steel - Process Liquid Line different process are used. It is as per the project requirements only.
Below is another project. Column 1 to 5 contains the collected data and column 6 & 7 are the requirements of PQR (we derived from the data) for that project.
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