J.07_Appendix_F.pdf

SECTION TABLE OF CONTENTS - PAGE 1

SECTION TABLE OF CONTENTS

DIVISION 09-FINISHES

SECTION 09965 – PAINTING: HYDRAULIC STRUCTURES

PARAGRAPH TITLE PAGE No

PART 1 - GENERAL

1.1 SCOPE OF WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 09965-01

1.2 DEFINITIONS AND NOMENCLATURE . . . . . . . . . . . . . . . . . . . . 09965-01

1.3 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 09965-01

1.4 SUBMITTALS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 09965-03

1.5 PACKAGING, LABELING, DELIVERY,

AND STORAGE OF PAINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 09965-03

1.6 SAFETY PROVISIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 09965-03

1.7 PAYMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 09965-07

PART 2 - PRODUCTS

2.1 SPECIAL PAINT FORMULATIONS NOT

COVERED BY STANDARD SPECIFICATIONS . . . . . . . . . . . . . .09965-07

PART 3 - EXECUTION

3.1 CLEANING AND PREPARATION

OF SURFACES TO BE PAINTED . . . . . . . . . . . . . . . . . . . . . . . 09965-08

3.2 PAINT APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 09965-09

3.3 PAINT SYSTEMS TO BE APPLIED--

NUMBER OF COATS AND FORMULAS. . . . . . . . . . . . . . . . . . . 09965-12

3.4 PAINT SYSTEMS AND PAINTING SCHEDULE . . . . . . . . . . . . . . 09965-13

09965-1

SECTION 09965 – PAINTING: HYDRAULIC STRUCTURES

PART 1 - GENERAL

1.1 SCOPE OF WORK

The work covered in this Section of the specifications consists of furnishing plant, labor, equipment, appliances, and materials in performing operations in connection with the preparation of surfaces and application of paint and other specified materials. This work shall be accomplished in complete and strict accordance with the specifications and the applicable drawings and shall be subject to the terms and conditions of the contract.

1.2 DEFINITIONS AND NOMENCLATURE

1.2.1. Paint. The term "paint" as used herein includes emulsions, enamels, paints, stains, varnishes, sealers, and other coatings, organic or inorganic, whether they be used as prime, intermediate, or finish coats. This definition does not include troweled or sprayed-metal coatings.

1.2.2. Shop Painting. The term "shop painting" as referred to herein and/or on the drawings covers surface preparation and painting operations conducted in a shop, mill, or plant, before shipment of paint-receiving items to the project site.

1.2.3. Field Painting. The term "field painting" as referred to herein and/or on the drawings covers surface preparation and painting operations conducted at the project site.

1.2.4. Touch-up Painting. The term "touch-up painting" refers to the application of paint on small areas of painted surfaces to repair mars, scratches, and other defects where the coating has deteriorated in order to restore the coating to an unbroken condition.

1.2.5. Repainting. The term "repainting" designates the cleaning and recoating with the same or similar materials originally used on extensive areas on which the existing coatings have deteriorated or otherwise have not provided adequate protection.

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

American Society for Testing and Materials (ASTM) Publications

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D 1045 (2008) Sampling and Testing Plasticizers Used in Plastics

D 1152 (2006) Methanol (Methyl Alcohol)

D 1153 (2006) Methyl Isobutyl Ketone

D 1200 (2010) Viscosity by Ford Viscosity Cup

D 1210 (2005; R 2010) Fineness of Dispersion of Pigment- Vehicle Systems by Hegman-Type Gage

D 153 (1984; R 2008) Specific Gravity of Pigments

D235 (2002; R 2007) Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)

D 281 (1995; R 2007) Oil Absorption of Pigments by Spatula Rub-Out

D 2917 (2007) Methyl Isoamyl Ketone

D3465 (2000; R 2007e1) Standard Test Method for Purity of Monmeric Plasticizers by Gas Chromatography

D3721 (2005; R 2011) Synthetic Red Iron Oxide Pigment

D4417 (2003) Field Measurement of Surface Profile of Blast Cleaned Steel

D520 (2000; R 2011) Zinc Dust Pigment

D561 (1982; R 2008) Carbon Black Pigment for Paint

D7091 (2005) Standard Practice for Nondestructive Measurement of Dry Film Thickness of Nonmagnetic Coatings Applied to Ferrous Metals and Nonmagnetic, Nondestructive Coatings Applied to Non-Ferrous Metals

D740 (2011) Methyl Ethyl Ketone

D841 (2011) Nitration Grade Toluene

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D962 (1981; R 2008e1) Aluminum Powder and Paste Pigments for Paints

E1347 (2006; R 2011) Color and Color Difference Measurement by Tristimulus (Filter) Colorimetry

Federal Standard (Fed. Std.).

No. 141C Paint, Varnish, Lacquer, and Related Materials;

Methods of Inspections, Sampling, and Testing

No. 595B Colors Used in Government Procurement.

The Society For Protective Coatings (SSPC)

SSPC SP 5/NACE No. 1 (2007) White Metal Blast Cleaning

1.4.1 Special Formulations indicated herein that are not covered by Federal or other nationally recognized standard specifications are specified below in the Paragraph: SPECIAL PAINT FORMULATIONS NOT COVERED BY STANDARD SPECIFICATIONS below.

1.5 SUBMITTALS. Government approval is required for submittals with a "GA" designation;

submittals having an "FIO" designation are for information only. The following shall be submitted in accordance with the SECTION entitled SUBMITTAL PROCEDURES.

1.5.1 SD-08 Statements.

1.5.1.1 Proprietary Brands of Paint: GA. The Contractor shall submit a statement from the supplier that the paint is appropriate as to type, color and gloss and is a premium grade of paint.

1.6 PACKAGING, LABELING, DELIVERY, AND STORAGE OF PAINTS. Paints shall be so processed and packaged as to ensure that within a period of 1 year from date of manufacture, they will not gel, liver or thicken deleteriously, or form gas in the closed container. Paints, unless otherwise specified or permitted, shall be packaged in standard containers not larger than 5 gallons in size, with removable friction or lug-type covers. Each container of paint or separately packaged component thereof shall be clearly and durably labeled to indicate the purchaser's order number, date of manufacture, manufacturer's batch number, quantity, color, component identification, and the designated name and formula or specification number of the paint together with special labeling instructions, when specified. Paints that can be harmed by exposure to cold weather shall be stored in ventilated, heated shelters. Paints shall be stored under cover from the elements and in locations

09965-4 free from sparks and flames.

1.7 SAFETY PROVISIONS. The safety provisions contained herein are in addition to those listed in the SPECIAL CLAUSES.

1.7.1 Abrasive Blasting.

1.7.1.1 Hoses and Nozzles. Hoses of a type to prevent shocks from static electricity shall be used. Hose lengths shall be joined together by metal couplings to the outside of the hose to avoid erosion and weakening of the couplings. The couplings shall be fastened together in a way which will prevent accidental disengagement. Nozzles shall be attached to the hose by fittings that will prevent the nozzle from unintentionally becoming disengaged. Nozzle attachments shall be of metal and shall fit onto the hose externally.

A deadman control device shall be provided at the nozzle end of the blasting hose to cut off the flow in the event the blaster loses control of the hose. Hoses and all fittings used for abrasive blasting shall be inspected frequently to ensure timely replacement before an unsafe amount of wear has occurred.

1.7.1.2 Blasting Helmets. Abrasive blasters under all circumstances shall be protected air-line fed abrasive blasting helmets of a positive pressure type certified by the National Institute for Occupational Safety and Health (NIOSH) or the Mining Enforcement Safety Administration (MESA). Breathing air, source of supply, and other respirator criteria shall meet the same requirements as set forth in Subparagraph: Health Protection below.

1.7.1.3 Protective Clothing. The blasters shall be protected against injury from exposure to the blast by appropriate protective clothing, including gloves.

1.7.1.4 Workers Other Than Blasters, working in areas where unsafe concentrations of abrasive materials and dusts are present, shall be protected by safety goggles and filter type dust respirators. The safety goggles shall be kept clean, fit well, contain lenses of unbreakable glass or plastic, and allow adequate peripheral as well as straight ahead vision. Persons whose vision requires the use of corrective lenses in spectacles shall wear safety goggles that can be worn over the spectacles without disturbing the adjustment of the spectacles.

The filter type dust respirators shall be certified by NIOSH or MESA for dusts not significantly more toxic than lead.

1.7.2 Cleaning With Compressed Air. As required in the Paragraph: Abrasive Blasting above, including the use of air-line fed abrasive blasting helmets, shall apply.

1.7.3 Cleaning With Solvents.

1.7.3.1 Ventilation and Respiratory Protection. Either natural ventilation or mechanical exhaust ventilation shall be used to remove the vapors in an enclosed space to a

09965-5 concentration which is safe for the entire work period.

1.7.3.2 Work Areas Without Ventilation. Employees shall be protected against organic vapors in work areas without ventilation by respirators certified by NIOSH or MESA

1.7.3.3 Protective Clothing. Exposure of skin and eyes shall be avoided by use of butyl gloves, apron, and safety goggles. The safety goggles shall meet the same requirements as specified above in the Paragraph: Workers Other Than Blasters.

1.7.4 Pretreatment of Metals and Concrete With Phosphoric Acid or Similar Type Acids.

Workers shall use chemical face-shields and butyl gloves and aprons. An eye lavage and deluge shower shall be provided for shop application. If eyes become contaminated, copious quantities of water shall be used to irrigate the eyes for at least 15 minutes.

Medical attention should be sought.

1.7.5 Paint Application.

1.7.5.1 Fire and Explosion Prevention.

(1) Ventilation. For painting in enclosed spaces with paint made of volatile organic solvents, sufficient exhaust ventilation assessment shall be provided to exchange the air in the enclosed spaces with fresh air at the rate of 5,000 cubic feet per minute for each spray gun in operation. Enclosed spaces shall be swept by moving air.

The air in enclosed spaces shall be safe at all times from fire and explosion hazards as determined by a calibrated explosimeter or organic vapor analyzer. Exhaust ducts shall discharge clear of working areas and away from sources of possible ignition. Periodic tests shall be made to ensure that the exhausted vapors are not accumulating in other areas. If the ventilation fails, painting shall be stopped and the compartment shall be evacuated until sufficient exhaust ventilation is provided. Ventilation shall be continued after the completion of painting until the paint film is no longer giving off appreciable amounts of solvent vapors. The final determination as to whether appreciable amounts of solvent vapors are given off shall be made after the ventilating equipment has been shut off for at least 10 minutes.

(2) Explosion Proof Equipment. Electrical wiring, lights, and other equipment located in a spraying area where concentration of solvent vapors may occur shall be of an explosion proof type approved by the Underwriters' Laboratories for Class I, Division 1, Group D, Hazardous Locations. Electrical wiring, motors, and

09965-6 other equipment outside of, but within 20 feet of a spraying area, shall not produce sparks under normal operation conditions and shall otherwise conform to the provisions for Class I, Division 2, Group D, Hazardous Locations. Electric motors driving exhaust fans shall not be placed inside spraying areas or ducts. Portable air ducts shall also be nonferrous materials. Motors and associated control equipment shall be properly maintained and grounded. The metallic parts of air moving devices, spray guns, connecting tubing, and duct work shall be electrically bonded and the bonded assembly grounded.

(3) Further Precautions. Workers shall wear non-sparking safety shoes. Solvent drums taken into the spraying area shall be placed on non-ferrous surfaces and shall be grounded. Metallic contact shall be maintained between containers and drums when materials are being transferred from one to another. A competent person shall inspect all power and lighting cables to ensure that the insulation is in excellent condition, free of cracks and worn spots, that there are no connections within 50 feet of the operation, that lines are not overloaded, and that they are suspended with sufficient slack to prevent undue stress or chafing. No lighted matches, cigarettes, cigars, pipes, or cigarette lighters, shall be taken into the area where work is being done. Conspicuous "NO SMOKING" signs shall be posted at all flammable materials spraying areas ad storage areas. Suitable fire extinguishing equipment shall be immediately available in the work area and shall be maintained in a state of readiness for instant use.

1.7.5.2 Health Protection.

(1) Respirators. Persons in the area of spray painting operations shall wear an air purifying mask or mouthpiece respirator with chemical cartridge and appropriate filter. Where paint containing high concentrations of volatile organic solvents are being used, continuous flow air-line respirators certified by NIOSH and MESA shall be used. In enclosed spaces, respirators shall be equipped with a pressure control valve with a quick disconnect feature that activates an automatic shutoff to stop air flow when disconnected, a pressure regulator, and in-line air filters for removal of dusts, mists, fumes, and smokes from the source of air supply. The air-line couplings shall be incompatible with outlets for other gas systems.

(2) Breathing Air shall meet the requirements of the specification

09965-7

Grade D breathing air as described in CGA Pamphlet G-7.1.

(3) Air Compressor. A breathing air type of air compressor shall be used as the source of air supply. If an oil-lubricated compressor is used to provide breathing air for the respirators, it shall be equipped with a high-temperature alarm or carbon monoxide alarm, or both. If only a high temperature alarm is used, frequent testing of the compressor air will be necessary.

(4) Protective Clothing. Workers shall wear cotton work clothes to cover arms and legs and shall wear gloves.

(5) Protective Program. A respiratory protective program for the use and maintenance of respirators shall be established. The program shall include instructing and training in the proper use and maintenance of respirators and their limitations. The training shall provide the user an opportunity to handle the respirator, have it fitted properly, test its face-piece-to-face-seal, wear it in normal air for a long familiarity period, and finally, to wear it in a test atmosphere. When the user wears corrective spectacles or corrective lenses as part of the face-piece, they shall be worn so as to provide good vision, comfort, and a gas-tight face-piece-to-face-seal. The maintenance program shall provide for the inspection for defects, including a leak check, cleaning and disinfecting, repair, and storage.

(6) Medical Status. The respirator user's medical status shall be determined by a physician and reviewed periodically (for instance, annually). Persons shall not be assigned to tasks requiring the use of respirators unless it has been determined that they are physically able to perform the work and use the equipment and have no illness which may be aggravated by intended painting operations.

1.8 PAYMENT for the painting work performed and for materials furnished as specified herein will be included in the contract prices for the items on which the work is performed.

PART 2 - PRODUCTS

2.1 SPECIAL PAINT FORMULATIONS NOT COVERED BY STANDARD

SPECIFICATIONS

2.1.1 Exceptions. The ingredient materials described in this Section are applicable only to the

09965-8 special paint formulations specified hereinafter and not to those finished-product coatings governed by Federal or other standard specifications.

2.1.2 General. Special paints shall have the composition as indicated in the formulas listed herein. Where so specified, certain components of a paint formulation shall be packed in separate containers for mixing on the job.

2.1.3 Colors and Tints. Color shall be grey

2.1.4 Paint Formulations.

2.1.4.1 Paint System for Steel Sheet Piling and other Ferrous Metal. The first, second, third, and forth coats shall be system No. 3-A-Z, or approved equal.

PART 3 - EXECUTION

3.1. CLEANING AND PREPARATION OF SURFACES TO BE PAINTED.

3.1.1 General. Surfaces to be painted shall be clean before applying paint or surface treatments. The removal of oil and grease shall, be general, be accomplished with mineral spirits or other low-toxicity solvents having a flashpoint above 100 degrees F. before any mechanical cleaning is started. Solvent cleaning shall be done with clean cloths and clean fluids to avoid leaving a thin film of greasy residue on the surfaces being cleaned.

Cleaning and painting shall be so programmed that dust or other contaminants from the cleaning process do not fall on wet, newly painted surfaces, and surfaces not intended to be painted shall be suitably protected from the effects of cleaning and painting operations.

Welding of, or in the vicinity of, previously painted surfaces shall be conducted in a manner to prevent weld spatter from striking the paint and to otherwise reduce coating damage to a minimum; paint damaged by welding operations shall be restored to original condition. Machinery shall be protected against entry of blast abrasive and dust into working parts. Surfaces to be painted that will be inaccessible after construction, erection, or installation operations are completed shall be painted before they become inaccessible.

3.1.2 Ferrous Surfaces subject to extended periods of immersion or otherwise as required shall be dry blast-cleaned to SSPC SP 5. Appropriate abrasive blast media shall be used to produce the desired surface profile. Weld spatter not dislodged by blasting shall be removed with impact or grinding tools and the areas reblasted prior to painting. Surfaces shall be dry at the time of blasting. Within 8 hours after cleaning, prior to the deposition of any detectable moisture, contaminants, or corrosion, ferrous surfaces blast cleaned to SSPC SP 5 shall be cleaned of dust and abrasive particles by brushing, vacuum cleaner, and/or blowdown with clean, dry compressed air, and given the first coat of paint. Upon written request by the Contractor, the Contracting Officer may authorize mill or shop cleaning of assembled or partially assembled components specified to receive System No.

09965-9

3-A-Z. The surfaces, if shop blasted, shall be shop coated with the first and second coats (minimum) of the specified paint system. The shop coating shall be maintained in good condition by cleaning and touching up areas damaged during the construction period.

Appearance of pinpoint or general rusting prior to application of field coats will be considered as evidence of poor workmanship, requiring reblasting and repainting at no added cost to the Government. Prior to the field application of subsequent coats, soiled areas of the shop coating shall be thoroughly cleaned and all welds or other unpainted or damaged areas shall be cleaned and coated in a manner to make them equivalent to adjacent, undamaged paint surfaces.

3.1.3 Galvanized Surfaces. Where galvanized surfaces are specified to be painted, they shall be first washed with clean mineral spirits and then pretreated with a primer conforming to Mil. Spec. DOD-P-15328 in accordance with the following instructions. The pretreatment primer shall be mixed by adding 1 volume of acid component (dilutent) to 4 volumes of resin component (base solution) slowly and with constant stirring. After mixing, the material shall be used within 8 hours. The pretreatment primer shall be spray applied at a coverage rate of 250 to 300 square feet per gallon (of resin component) to give a dry film thickness of 0.3 to 0.5 mil. Small areas may be coated by brush or swab.

Care shall be exercised in spray application to avoid the deposition of dry particles on the surface. A wet spray shall be maintained at all times by additional thinning with Normal Butanol, ASTM D 304, where required by prevailing weather conditions. The acid component (dilutent), over and above the amount prescribed above, shall not be used for thinning purposes. Surfaces shall receive the first coat of paint after at least 1 but not more than 24 hours drying of the pretreatment primer film.

3.2 PAINT APPLICATION.

3.2.1 General. The finished coating shall be free from holidays, pinholes, bubbles, runs, drops, ridges, waves, laps, unnecessary brush marks, and variations in color, texture, and gloss.

Application of initial or subsequent coatings shall not commence until a Government representative has verified that atmospheric conditions and the surfaces to be coated are satisfactory or has waived specific verification. All paint coats shall be applied in such manner as to produce an even, continuous film of uniform thickness. Edges, corners, crevices, seams, joints, welds, rivets, and other surface irregularities shall receive special attention to ensure that they receive an adequate thickness of paint. Spray equipment shall be equipped with traps and separators and where appropriate, mechanical agitators, pressure gages, pressure regulators, and screens or filters. Air caps, nozzles, and needles shall be as recommended by the spray equipment manufacturer for the material being applied. Airless-type spray equipment shall be used only on broad, flat, or otherwise simply configured surfaces, except that it may be employed for general painting if the spray gun is equipped with dual or adjustable tips of proper types and orifice sizes.

3.2.2 Mixing and Thinning. Paints shall be thoroughly mixed, strained where necessary, and

09965-10 kept at a uniform composition and consistency during application. Paste or dry powder pigments specified to be added at the time of use shall, with the aid of powered stirrers, be incorporated into the vehicle or base paint in such a manner as to produce a smooth, homogeneous mixture free of lumps and dry particles. Where necessary, in the opinion of the inspector, to suit conditions of surface, temperature, weather, and method of application, the packaged paint may be thinned immediately prior to use by the addition of not more than 1 pint per gallon of the proper thinner, provided that this general limitation shall not apply when more specific thinning instructions are provided. Paint that has been stored at low temperature shall be brought up to at least 70 degrees F before being mixed and thinned, and its temperature in the spray tank or other working container shall not fall below 60 degrees F during the application. Paint that has deteriorated in any manner to such degree that it cannot be restored to essentially its original condition by customary field-mixing methods shall not be used and shall be removed from the project site. Paint and thinner that is more than 1 year old shall be sampled and submitted for testing to determine its suitability for application.

3.2.3 Atmospheric and Surface Conditions. Paints shall be applied only to surfaces that are above the dew point temperature and that are completely free of moisture as determined by sight and touch. In no case shall paint be applied to surfaces upon which there is detectable frost or ice. Except as otherwise specified, the temperature of the surfaces to be painted and of air in contract therewith shall be not less than 45 degrees F during paint application nor shall paint be applied if the surfaces can be expected to drop to 32 degrees F or lower before the film has dried to a reasonably firm condition. During periods of inclement weather, painting may be continued by enclosing the surfaces and applying artificial heat, provided the minimum temperatures and surface dryness requirements prescribed above are maintained. Paint shall not be applied to surfaces heated by direct sunlight or other sources to temperatures that will cause detrimental blistering, pinholing, or porosity of the film.

3.2.4 Time Between Surface Preparation and Painting. Surfaces that have been cleaned or otherwise prepared for painting shall be primed as soon as practicable after such preparation has been completed, but in any event, prior to any deterioration of the prepared surface.

3.2.5 Method of Paint Application. Unless otherwise specified, paint shall be applied by brush or spray to ferrous and nonferrous metal surfaces. Special attention shall be directed toward ensuring adequate coverage of edges, corners, crevices, rivets, bolts, welds, and similar surface irregularities. Other methods of application to metal surfaces shall be subject to the specific approval of the Contracting Officer. Whenever application of paint by a specific method to a surface is permitted or directed, it is to be understood that all areas inaccessible to that method shall be coated by alternate means.

3.2.6 Coverage and Film Thickness. The actual surface area covered per gallon of paint shall

09965-11 not exceed the spreading rates prescribed for specific paints. Where no spreading rate is specified, the paint shall be applied at a rate normal for the type of material being used. In any event, the combined coats of a specified paint system shall completely hide the base surface and the finish coats shall completely hide undercoats of dissimilar color. Where dry film thickness requirements are specified for coatings on ferrous surfaces, measurements shall be made with one (1) of the thickness gages listed below. They shall be calibrated using plastic shims with metal practically identical in composition and surface preparation to that being coated and be of substantially the same thickness, except that for measurements on metal thicker than 1/4-inch, the instrument may be calibrated on metal with a minimum thickness of 1/4-inch. When calibrating any of the gages for making film measurements of over 3 mils, the calibrating thickness standards (shims) shall be of nonmetallic composition. Where only one (1) thickness is specified (either a minimum or an average), the calibrating shim's thickness shall closely approximate the specified thickness but where both thicknesses are specified the shim's thickness shall closely approximate an average of the two. Calibrating instructions, thickness standards, and in the case of Mikrotest gage, a calibrating tool, should be obtained from the manufacturer or supplier of the gage. Authorized thickness gages:

General Electric, Type B, General Electric Company

Mikrotest, Elektrophysik - Koln

Elcometer Instruments, Ltd.

Inspector Gage, Elcometer Instruments, Ltd.

Minitector, Elcometer Instruments, Ltd.

3.2.7 Progress of Painting Work. Where field painting on any type of surface has commenced, the complete painting operation, including priming and finishing coats, on that portion of the work, shall be completed as soon as practicable, without prolonged delays. Sufficient time shall elapse between successive coats to permit them to dry properly for recoating, and this period shall be modified as necessary to suit adverse weather conditions. Paint shall be considered dry for recoating when it feels firm, does not deform or feel sticky under moderate pressure of the finger, and the application of another coat of paint does not cause such film irregularities such as lifting or loss of adhesion of the undercoat. All coats of all painted surfaces shall be unscarred and completely integral at the time of application of succeeding coats. At the time of application of each successive coat, undercoats shall be cleaned of dust, grease, or foreign matter by means of airblast, solvent cleaning, or other suitable means. Cement and mortar deposits on painted steel surfaces, not satisfactorily removed by ordinary cleaning methods, shall be brush-off blast cleaned and completely repainted as required. Undercoats of high gloss shall, if necessary for establishment of good adhesion, be scuff sanded, solvent wiped, or otherwise treated prior

09965-12 to application of a succeeding coat. Field coats on metal shall be applied after erection except as otherwise specified and except for surfaces to be painted that will become inaccessible after erection.

3.2.8 Contacting Surfaces. When riveted or ordinary bolted contact is to exist between surfaces of ferrous or other metal parts of substantially similar chemical composition, such surfaces will not be required to be painted but any resulting crevices shall subsequently be filled or sealed off with paint. Contacting metal surfaces formed by high-strength bolts in friction-type connections shall not be painted. Where a nonmetal surface is to be riveted or bolted contact with a metal surface, the contacting surfaces of the metal shall be cleaned and given three (3) coats of the specified primer. Unless otherwise specified, corrosion-resisting metal surfaces, including cladding therewith, shall not be painted.

3.2.9 Drying Time Prior to Immersion. Painted surfaces that are to be immersed in water shall be permitted a final drying time as long as practicable.

3.2.10 Protection of Painted Surfaces. Where shelter and/or heat are provided for painted surfaces during inclement weather, such protective measures shall be maintained until the paint film has dried and discontinuance of the measures is authorized. Items that have been painted shall not be handled, worked on, or otherwise disturbed until the paint coat is fully dry and hard. All metalwork coated in the shop or field prior to final erection shall be stored out of contact with the ground in such manner and location as will minimize the formation of water-holding pockets, soiling, contamination, and deterioration of the paint film, and damaged areas of paint on such metalwork shall be cleaned and touched up without delay. The specified first overall field coat of paint shall be applied within a reasonable period after the shop coat and in any event before weathering of the shop coat becomes extensive.

3.3 PAINT SYSTEMS TO BE APPLIED - NUMBER OF COATS AND FORMULAS

3.3.1 General. The required paint systems and the surfaces to which they shall be applied are shown in Subparagraph: Paint Systems and Painting Schedule below and as shown.

Supplementary information is specified below.

3.3.1.1 Fabricated and Assembled Items. Items that have been fabricated and/or assembled into essentially their final form and that are customarily cleaned and painted in accordance with the manufacturer's standard practice will be exempted from equivalent surface preparation and painting requirements described herein, provided that:

(1) Surfaces primed (only) in accordance with such standard practices are compatible with specified field-applied finish coats.

09965-13

(2) Surfaces that have been primed and finish painted in accordance with the manufacturer's standard practice are of acceptable color and are capable of being satisfactorily touched up in the field.

(3) Items expressly designated herein to be cleaned and painted in a specified manner are not coated in accordance with the manufacturer's standard practice if different from that specified herein.

3.3.1.2 Colors and Tints shall match the respective color specimens designated by, or shall otherwise be subject to approval. Where specified or directed, alternate applications of successive undercoats having the same color shall be tinted with small amounts of lampblack or other approved ingredients, ground in a vehicle compatible with the paint being tinted, in order to ensure that all surfaces are properly coated with the specified number of paint coats.

3.3.1.3 Surface Preparation. The method of surface preparation and pretreatment shown in the tabulation of paint systems is for identification purposes only. Cleaning and pretreatment of surfaces prior to painting shall be accomplished in accordance with detailed requirements hereinbefore described.

3.4 PAINT SYSTEMS AND PAINTING SCHEDULE

(See Paragraph: Supplementary Application Instructions below for supplementary application instructions pertaining to the following paint systems):

SYSTEM NO. 3-A-Z

Items or surfaces to be coated: Steel bulkhead assembly

Surface Paint Formulas to be Applied______________ Preparation 1st Coat 2d Coat 3d Coat 4th Coat

SSPC SP 5 VZ-108D V-766 E V-102 E V-102 E

Vinyl Zinc Rich Primer White Vinyl Alum Vinyl Alum Vinyl

2.5 mils 1.5 mils 1.5 mils 1.0 mil

DFT DFT DFT DFT