Attachment_22_-_Section_09_97_13.00_40_Steel_Coatings.pdf

FA4419-14-R-0102

Attachment 22

SECTION 09 97 13.00 40

STEEL COATINGS

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 DELIVERY, HANDLING, AND STORAGE

1.4 GENERAL

PART 2 PRODUCTS

2.1 ABRASIVE BLASTING MATERIAL

2.2 SEALANT COMPOUND

2.3 PROTECTIVE COATINGS

2.3.1 Coating Systems

PART 3 EXECUTION

3.1 SURFACE PREPARATION

3.1.1 General

3.1.2 Abrasive Blasting (AB)

3.1.3 Mechanical Cleaning (MC)

3.2 COATING APPLICATION

3.2.1 General Requirements

3.2.2 Mixing and Application Procedures

3.2.3 Dry-Film Thickness (DFT)

3.3 TOUCH-UP

3.4 SEALANT COMPOUND APPLICATION

3.5 INSPECTION

3.6 COATING SCHEDULE

-- End of Section Table of Contents --

SECTION 09 97 13.00 40

STEEL COATINGS

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM C920 (2011) Standard Specification for Elastomeric Joint Sealants

THE SOCIETY FOR PROTECTIVE COATINGS (SSPC)

SSPC AB 1 (2013) Mineral and Slag Abrasives

SSPC Painting Manual (2002) Good Painting Practice, Steel Structures Painting Manual, Volume 1

SSPC SP 1 (1982; E 2004) Solvent Cleaning

SSPC SP 10/NACE No. 2 (2007) Near-White Blast Cleaning

SSPC SP 3 (1982; E 2004) Power Tool Cleaning

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation; submittals not having a

"G" designation are [for Contractor Quality Control approval.][for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.] Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-01 Preconstruction Submittals

Material, Equipment, and Fixture Lists shall be submitted in accordance with paragraph entitled, "General," of this section.

A Safety Plan shall be submitted in accordance with paragraph entitled, "General," of this section.

SD-03 Product Data

Manufacturer's catalog data shall be submitted for the following items:

Abrasive Blasting Material

Sealant Compound

Inorganic Zinc

Inhibitive Polyamide Epoxy

Aliphatic Polyurethane

SD-04 Samples

Manufacturer's Standard Color Charts shall be submitted in accordance with paragraph entitled, "General," of this section.

Inspection Forms shall be submitted in accordance with paragraph entitled, "Inspection," of this section.

SD-05 Design Data

Mix Designs shall be submitted in accordance with paragraph entitled, "General," of this section.

Inorganic Zinc

SD-06 Test Reports

Inspection reports shall be submitted for protective coating systems in accordance with paragraph entitled, "Inspection," of this section.

SD-07 Certificates

Certificates shall be submitted for following items showing conformance with the referenced standards contained in this section.

Abrasive Blasting Material

Sealant Compound

Inorganic Zinc Coating

SD-08 Manufacturer's Instructions

Manufacturer's instructions shall be submitted for Protective Coatings including details of thinning, mixing, handling, and application.

1.3 DELIVERY, HANDLING, AND STORAGE

Materials shall be delivered in their original, unopened containers bearing the manufacturer's name, shelf-life, product identification, and batch number. Coatings, thinners, and cleaners shall be stored in tightly closed containers in a covered, well-ventilated area where they will be protected from exposure to extreme cold or heat, sparks, flame, direct sunlight, or rainfall.

Manufacturer's instructions for storage limitations shall be followed.

1.4 GENERAL

A Safety Plan shall be submitted for protective coating systems in accordance with OSHA regulations. Material, Equipment, and Fixture Lists shall be submitted for manufacturer's style or catalog numbers, specification and drawing reference numbers and warranty information for the

Protective Coatings Systems fabrication site. Manufacturer's Standard Color Charts shall be submitted showing manufacturer's standard finish colors. Mix Designs shall be submitted for each type of protective coating including a complete list of ingredients and admixtures.

Applicable test report shall verify that the mix has been successfully tested and meets design requirements.

PART 2 PRODUCTS

2.1 ABRASIVE BLASTING MATERIAL

Abrasive blasting materials shall be per SSPC Painting Manual, Chapter 2.4, and SSPC AB 1.

2.2 SEALANT COMPOUND

Sealant shall be a self-curing, single component, polysulfide-rubber type conforming to ASTM

C920. Sealant shall be gray in color and capable of being applied into the joint with a caulking gun.

2.3 PROTECTIVE COATINGS

2.3.1 Coating Systems

The following two coating systems definitions are to be specified for use on the surfaces listed in the Coating Schedule, of this section, and as directed.

Coating System No. 1 shall consist of inorganic zinc only [, no top coat unless specified]. Inorganic zinc shall be selected from the following listing. Coatings, thinners, and cleaners shall be the product of one manufacturer.

Coating System No. 2 shall consist of inorganic zinc first coat, inhibitive polyamide epoxy intermediate coat, and aliphatic polyurethane finish coat.

Coatings shall be selected from the following listing and all coatings, thinners, and cleaners shall be the product of the same manufacturer. Each successive coating shall be of a contrasting color to provide a visual assurance of complete coverage.

COATING SYSTEMS

INORGANIC

ZINC

INHIBITIVE

POLYAMIDE EPOXY

ALIPHATIC

POLYURETHANE

MANUFACTURER

Dimetcote 9 Amercoat 370 Amercoat 450HS Ameron International

201 N. Berry Street

Brea, CA 92621

714-529-1951

Carbo Zinc 11 Carboguard 893 Carbothance 134HG Carboline Company

350 Hanley Industrial Court

St. Louis, MO 63144

800-848-4645 ext. 2557

Catha-Coat 304V Devran 201 Devthane 369 ICI-DEVOE

925 Euclid Ave.

Cleveland, OH 44115

216-344-8798

347-Y-912 525-333 or 71125P Imron 333 DuPont Company

DuPont Building

1007 Market Street

Wilmington, DE 19898

800-441-7515

Porter Zinc 3200 Porter Glaze 4400 High

Build

Porterthane 9000

Glaze Urethane

Porter Paint Company

400 South 13 th

Street

Louisville, KY 40203

800-332-6270

PART 3 EXECUTION

3.1 SURFACE PREPARATION

3.1.1 General

Faying surfaces that will become inaccessible after installation shall be abrasive blasted and coated with inorganic zinc only, prior to installation.

Surfaces that are part of slip-critical joints shall be faying [abrasive blasted]

[mechanically cleaned coated with inorganic zinc] prior to installation.

Surfaces to be welded shall be left uncoated. Welded areas shall then be masked and touched up.

Prepared surfaces shall be coated within 6 hours after completion of surface preparation and before rusting or recontamination occurs. Surfaces not coated within 6 hours or which show rusting or contamination, regardless of the length of time after preparation, shall be reprepared.

Surface preparation and coating operations shall be sequenced so that freshly applied coatings will not be contaminated by dust or foreign matter.

Surfaces shall be inspected and degreased as required prior to subsequent surface preparation and the application of protective coatings. Degreasing shall be by solvent cleaning, detergent washing, or steam cleaning. SSPC SP 1 shall apply for solvent cleaning.

3.1.2 Abrasive Blasting (AB)

Abrasive blasting shall conform to SSPC SP 10/NACE No. 2 and SSPC Painting

Manual.

Compressed air used for abrasive blasting shall be free of moisture and oil.

Surfaces not to be blasted are:

Galvanized steel and prefinished surfaces except when specified to be blast-cleaned in the coating schedule

Piston rods and bearing surfaces

A minimum nozzle pressure of 620 kilopascal 90 pounds per square inch shall be maintained.

Weld slag, weld spatter, and foreign matter shall be removed from surfaces to be coated prior to abrasive blasting using mechanical methods as specified.

Blast cleaning shall achieve a 1-to 2-mil anchor profile as indicated by a surface profile comparator, replica tape, or similar device.

Rust and corrosion shall be removed from pits and depressions.

Abrasive blast aggregate shall not be reused.

All traces of abrasive residue and dust shall be removed from the surface, leaving it clean and dry.

3.1.3 Mechanical Cleaning (MC)

Where mechanical cleaning is specified in the coating schedule [for existing surfaces]

[and AB is prohibited], needle scalers or abrasive disks or wheels shall be used in accordance with SSPC SP 3, leaving the surface cleanliness equivalent to near-white metal (SSPC SP 10/NACE No. 2).

3.2 COATING APPLICATION

3.2.1 General Requirements

Manufacturer's instructions for thinning, mixing, handling, and applying products shall be considered a part of this specification. In the event of conflict between the requirements of this specification and the manufacturer's recommendations, this specification shall take precedence. Compressed air used for spraying coatings shall be free of moisture and oil. Each coat of material applied shall be free from runs; sags; blisters; bubbles; mud cracking; variations in color, gloss, and texture;

holidays (missed areas); excessive film build; foreign contaminants; and dry overspray. No coating shall be applied when rain is imminent or when the temperature or humidity is outside the limits recommended by the coating manufacturer. Surface temperature shall be at least 3 degrees C 5 degrees F above the dew point. Coatings shall be thoroughly worked into all joints, crevices, and open spaces. Special attention shall be paid to welds, cutouts, sharp edges, rivets, crevices, and bolts to ensure proper coverage and thickness. Newly coated surfaces shall be adequately protected from damage. Coatings shall be applied by airless or conventional spray. Airless spraying shall be used for uniform large surface areas. Conventional spraying shall be used for small areas of intricate configuration and for touchup. During application of inorganic zinc coating, maintain uniform suspension.

3.2.2 Mixing and Application Procedures

Material shall be stirred thoroughly using an instrument that will not induce air into coating. Mixed material shall be strained through a 30- to 60-mesh screen.

Continuous slow agitation of the material shall be provided during application of inorganic zinc coating, maintain uniform suspension. Continuous rapid agitation shall be avoided. Material shall be thinned for workability and improved spray characteristics only. Material shall be applied in even, parallel passes, overlapping

50 percent. Special attention shall be paid to welds, cutouts, sharp edges, rivets, crevices, and bolts to ensure proper coverage and thickness.

3.2.3 Dry-Film Thickness (DFT)

Coatings shall be applied to the following dry-film thicknesses:

Coating System No. 1:

a. 3 to 6 mils, inorganic zinc, as specified in Coating Schedule.

b. Top coat 2 to 4 mils

c. Second coat, inorganic zinc, 2 to 4 mils

d. Inorganic primer zinc: 2.5 to 4 mils

e. Inhibitive polyamide epoxy, second coat: 2 to 4 mils

f. Aliphatic polyurethane, third coat: 2 to 4 mils, but sufficient to hide previous coat

Coating System No. 2:

When dry through (dry to handle), the film thickness shall be checked with a calibrated nondestructive dry-film thickness gage. If less than specified thickness, additional material shall be applied as required. Proper DFT for the inorganic zinc coating shall be obtained in a single application which may consist of multiple passes, while coating is still wet.

3.3 TOUCH-UP

Abrasions that occurred during shipment or erection shall be touched up as follows:

a. Surface preparation and coating application shall conform to the manufacturer's instructions.

b. Inorganic zinc shall be used for touch-up and repair of inorganic zinc and hot-dip galvanizing.

c. Inhibitive polyamide epoxy and aliphatic polyurethane shall be used for touch-up and repair of coating system No. 2.

3.4 SEALANT COMPOUND APPLICATION

For Coating System No. 1, caulking shall be accomplished after application and cure of inorganic zinc coating.

For Coating System No. 2, caulking shall be accomplished after application and cure of inhibitive epoxy coat and prior to aliphatic polyurethane coat.

Exterior joints shall be caulked, including, but not limited to, the following:

a. Perimeter of faying and bearing surfaces of structural members

b. Joints in members between intermittent welds

c. Perimeter of bearing surfaces between floor plates and supporting members (inside, outside, top, and bottom)

d. Stair treads, where joined to channel stringers

e. Openings of 13 millimeter 1/2 inch or smaller (Foam filler backup shall be used as required.)

f. Hot-dipped galvanized vent holes

3.5 INSPECTION

On-site work as described herein shall be inspected for compliance with this specification by a NACE (National Association of Corrosion Engineers) Certified Coating Inspector provided by the [Contracting Officer] [Contractor]. For all protective coatings applied off-site locations, the Contractor shall provide full inspection by NACE Certified Coating

Inspector. Inspector shall be present at the pre-work conference to address necessary clarification of inspection and specification requirements. Apparent deviation from the specified requirements or any out of tolerance condition shall be immediately reported to the Contracting Officer for determination of corrective action. Submit inspection reports performed by the Coating Inspector. Inspection Forms shall be submitted at the pre-work conference which shall be used by the Coating Inspector and forwarded to the

Contracting Officer prior to delivery of the coated work to the job site.

3.6 COATING SCHEDULE

Surface

Description

Surface

Preperation

Coating System Finish Color for

Coating System

No. 2

Dry Film

Thickness, Primer Coat, MM MILS

[1] [2] [red] [green] [3-5] [4-6]

-- End of Section --