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What is Bolt-Up Procedure for Critical Flanges about?

This document provides a bolt-up procedure for critical flanges on equipment and piping at a refinery upgrading project in Thessaloniki, Greece. It outlines preparation, inspection, and bolt-up steps to achieve leak-free flanged joints. Critical flanges requiring special treatment are those 1-1/2" or larger on equipment, with certain bolt grades, or 6" or larger on piping rated 900# or above. Vendors and contractors must qualify their own bolt-up procedures according to these guidelines.

Author

vpkaranam1

Language

EN