This Practice provides a data sheet supplemental to the API 650 Tank Data Sheet and the associated instructions for specifying requirements for atmospheric storage tanks in accordance with PIP VESTA002. This Practice contains a PIP VEDTA003-D Atmospheric Storage Tank Data Sheet for providing supplemental requirements not otherwise specified in the API 650 Tank Data Sheet for welded steel atmospheric storage tanks designed in accordance with API 650. The PIP VEDTA003-D Data Sheet is required to be prepared in conjunction with PIP VESTA002 and the API 650 Tank Data Sheet to specify requirements that are to be used by the Manufacturer to design, fabricate, and erect an atmospheric storage tank in accordance with API 650. This Practice provides instructions to Purchasers and Manufacturers for the preparation and completion of the PIP VEDTA003-D Data Sheet.