This Practice provides requirements for use by a purchaser for determining the design criteria including design, materials of construction, inspection and testing for shell and tube heat exchangers constructed in accordance with ASME Boiler and Pressure Vessel Code, Section VIII, Division 1 or Division 2, henceforth referred to as the Code, TEMA Standards of the Tubular Exchangers Manufacturers Association, and PIP VECV1001. Requirements that are specific to Code, Section VIII, Division 2 are shown in braces { }. This Practice provides requirements for purchasing shell and tube heat exchangers to be designed and fabricated by a manufacturer. This Practice also provides guidance for the development of purchase specifications for the construction of new shell and tube heat exchangers that meet the philosophy and requirements of Code, Section VIII, Division 1 {or 2} and PIP VECV1001. For some heat exchanger purchases, certain requirements in this Practice and in PIP VECV1001 may be assigned by purchaser to manufacturer. The specific requirements assigned (e.g., thermal design and the performance rating) shall be specified on purchaser’s PIP VEDST003 Data Sheet.