INSTALLATION OF KEYWAY EXTENDERS FRONT FACE PROCESS TUBES DESIGN CHANGE P-3428

摘要

The purpose of this design change 1s to authorize the installation of Keyway Extension Adapter Assemblies to establish longer thimble keyways and to allow more room for process tube growth.nDrag Measurement:nIn addition to the above purpose is authorization to test the tubes as outlined in DT N-396 test procedures 1) before packing removal, 2) after packing removal and before backup ring removal, and 3) after backup ring removal?