NACE SP0178-2007


Design, Fabrication, and Surface Finish Practices for Tanks and Vessels to Be Lined for Immersion ServiceNational Association of Corrosion Engineers / 10-Mar-2007 / 19 pages ISBN: 1575901676

1.1 This standard presents standard practices for thedesign, fabrication, and surface finish of tanks and vesselsto be lined for immersion service. Tanks and vessels maybe lined for corrosion control or to prevent productcontamination.
1.1.1 Appendix A (mandatory) contains illustrationsdepicting both good and bad practices for tanks andvessels to be lined for immersion service.
1.1.2 Appendix B (nonmandatory) contains a list ofrecommended responsibilities of the purchaser (user),designer, fabricator, lining applicator, and inspector toensure that an acceptable lining application isachieved.
1.1.3 Appendix C (nonmandatory) contains writtenand graphic descriptions of five degrees of surfacepreparation of welds in tanks and vessels that may bespecified prior to lining. The written descriptions of thefive degrees of surface preparation of welds inAppendix C take precedence over the graphics and thecompanion visual comparator. The graphics are onlypictorial representations of welds and grinding finishesand are not intended to be representative of theintegrity of the welds. The "weld condition prior tofinishing" is not a typical weld; it is only intended toillustrate defects in welds that must be corrected priorto lining.
1.2 Good welding practices and welding codes govern theintegrity of the tank and vessel welds; this standard onlyaddresses surface preparation of the welds for the purposeof lining the tank or vessel for immersion service.
1.3 Other design and construction codes or standards maybe used to complement the details given here. Whenapplicable, the requirements of such other codes orstandards shall be considered. A partial list of such codesand standards can be found in the Bibliography.
1.4 These standard practices may be used in the design,fabrication, and surface finish of tanks and vessels forservices other than immersion, such as dry bulk storage ofsolid materials.

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