12.07.2015 Views

FP-96 English Version - Eastern Federal Lands Highway Division

FP-96 English Version - Eastern Federal Lands Highway Division

FP-96 English Version - Eastern Federal Lands Highway Division

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Section 563COATPrimerIntermediateTopTable 563 - 2Structural Iron and Steel Coating Systems forSurfaces with Existing Sound PaintPaint System (1)6 7 8AggressiveEnvironments(Salt)Moisture-curedurethane2-3 mils dryMoisture-curedurethane2-3 mils dryMoisture-curedurethane orAliphatic urethane2-3 mils dryLess AggressiveEnvironments(No Salt)Low VOCalkyd2-3 mils dryLow VOCalkyd2-3 mils dryLow VOCsilicone-alkyd2-3 mils dryLess AggressiveEnvironments(No Salt)Low viscosityepoxy sealer1-2 mils dryEpoxy3-4 mils dryAliphaticurethane2-3 mils dryTotal Thickness 6-9 mils dry 6-9 mils dry 6-9 mils dry(1) System 1 is for the corrosion protection of iron and steel in aggressively corrosive atmosphericenvironments such as marine, industrial, high humidity, or structures exposed to deicing salts.System 2 or 3 is for use in those environments free from high concentrations of salts or pollutantsthat cause aggressive corrosion environments.(b) Surface preparation. Do not remove sound paint unless specificallyrequired by the contract.(1) New surfaces or surfaces with all existing paint removed. Removeall dirt, mill scale, rust, paint, and other foreign material from exposedsurfaces by blast cleaning to near white metal according toSSPC-SP 10.Use compressed air that is free from oil or moisture and does not showblack or wet spots when tested according to ASTM D 4285. Do not useunwashed sand or abrasives that contain salts, dirt, oil, or other foreignmatter. Before blast cleaning near machinery, seal bearings, journals,motors, and moving parts against entry of abrasive dust.497

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