1、Specification for Field-welded Tanks for Storage of Production LiquidsAPI SPECIFICATION 12D TWELFTH EDITION,JUNE 2017EFFECTIVE DATE:DECEMBER 1,2017Special NotesAPI publications necessarily address problems of a general nature.With respect to particular circumstances,local,state,and federal laws and
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15、rg.iiiContentsPage1Scope.11.1General.11.2Compliance .12Normative References .13Terms and Definitions.24Materials.34.1General.34.2Plates .34.3Sheets.34.4Welding Electrodes.34.5Structural Shapes.44.6Piping.44.7Flanges.44.8Couplings.44.9Bolting.45Design.45.1General.45.2Tank Size.55.3Weld Size.55.4Joint
16、s .65.5Bottom Design.65.6Shell Design.85.7Roof Design.95.8Cleanout.105.9Connections.105.10 Center Roof Nozzle.115.11 Center Support .115.12 Anti-channel Drain Baffle.115.13 Downcomer Pipe.125.14 Walkways,Stairways,and Ladders.126Venting Requirements .126.1Normal Venting .126.2Emergency Venting.127Construction,Testing,and Painting.127.1Construction .127.2Welding.127.3Testing .137.4External Painting.137.5Internal Coating.137.6Clean Up.138Marking.139Inspection and Rejection.149.1Inspection Notice.1
