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i. The lower 36 of the internal shell and the bottom shall be coated with 24 mils DFT Sherwin W:Iliams Dum- Plale UHS Tank Lining System.Refer to the attached Sherwin Williams"Insfaliation Procedure for Dural- Plat e UHS Epoxv"for recommended preparation and appiicatios procedures. 2 The BP representative shall arrange to have an independent NACE Level lf/Iast)"fOrPreS@nt t0 ins act the surface preparation,coating application and coating curing. 3 e r "• Verification of independent NACE Level If Inspection witnessed by the BP representative. Data: Job Representative Signature:Job Rep shall visually inspect after work is completed. Job Rep shall sign off each day if acceptable- API 653 Inspector Signature:Inspector shelf verily that the Job Rep has signed Date: off the above item then Inspector can signoff. 4. Tile surfaces and joints to be coated shall be fabricated and prepared in accordance with NACE Standard RP-0176(Latest Edition) "Design,Fabrication,Surface Finish Requirements and Proper Design Considerations for Tanks and Vessels to be Lined for Immersion Service." a. All rough welds shall be ground to remove sharp edges undercuts,pinholes and other such irregularities.Chipping can be used to remove sharp edges if followed by grinding. b. Sharp edges and fillets shall be ground to a smooth radius of 1/4'to 116" Surfaces shall be free of gauges,deep scratches,slivered steel and other surface flaws. C. Surfaces to be lined shall be free of wax or grease penal:marks,gouges,handling marks,deep scratches,metal stamp marks,silvered steel or other surface Ilaws.Any flaws shall be repaired by solvent cleaning,weldng with E70181 E7024 or grinding as required d All welds to be lined shalt meet the minimum requirements of MACE Weld Preparation Designation "C" as defined in NACE RP-0178. 5. Prepare the surface for application of the Internal coaling a. Remove all oil and grease from surface by Solvent Cleaning per SSPC-SP1. b. Sandblast tank bottom and lower shelf to Near While Metal Blast Cleaning SSPC-SPI01 NACE 2 Blast dean all surfaces using a sharp,angular abrasive for optimum surface profile,2-3 mil profile c Remove all weld splatter.The surface to be primed must be clean,dry,and in sound condition Remove all 04 dust,grease,dirt,loose rust,and other foreign material to ensure good adhesion d Clean sandblast material and other debris from prepared surface.Remove and dispose of waste malarial in approved containers. e. Prime an bare steel the same day as It is cleaned or before gash rusting occurs. f • • - Verification of the visual examination(VT)surface preparation Is to specified surface finish,clean inass,dryness,and readiness for application or the coaling by the BP representative Date: Job Representative Signature:Job Rep shy 'sualllrnspect after work is completed Job Rep shall sign off each flab API 653 Inspector Signature:fnspc:lor she:verify that the Job Rep has signed Date: off the abovr item then Inspectori.an signoff 6 The BP representative shall verify that the installation conforms to the General Requirements of the 'lnslarkatlon Preg—adare for Dur-Plate U.YS Eaorv. a. Temperature,air movement,relative humidity and dew point b. Material handling,storage and preparation - Observance of all safety precautions.• • •• 7 Verification of the compliance with all General Requirements by the SP representative