The purpose of this Practice is to provide instruction and/or direction to designers for preparation of the Shell and Tube Heat Exchanger Specification Sheet (hereafter referred to as the Specification Sheet). The Specification Sheet, prepared in conjunction with PIP VECV1001 and PIP VESV1002, completes a specification suitable for obtaining comprehensive bids and subsequent purchase of shell and tube heat exchangers. Note that PIP VEDV1003, Vessel Drawing/Data Sheet and Instructions, does not apply to shell and tube heat exchangers.