This Practice supplements PIP REIE686/API RP686, Recommended Practice for Machinery Installation and Installation Design. Together, this Practice and PIP REIE686/API RP686 provide requirements for installation recommended procedures, practices, and checklists for the installation and precommissioning of new, existing, and reapplied machinery and to assist with the installation design of such machinery.

This Practice describes additions, changes, and deletions that have been made to PIP REIE686/API RP686. In addition, decisions that have been made regarding options offered by PIP REIE686/API RP686 are also described.