009-32_Cleanin_Painting.pdf

1 of 63 ITEM NO: 009-32

FY-09

NAVSEA

STANDARD ITEM

FY-09

ITEM NO: 009-32

DATE: 19 JUL 2007

CATEGORY: II

1. SCOPE:

1.1 Title: Cleaning and Painting Requirements; accomplish

2. REFERENCES:

2.1 Standard Items

2.2 S9086-VD-STM-010/020/030/CH-631, Preservation of Ships in Service

2.3 29 CFR 1915, Occupational Safety and Health Standards for Shipyard

Employment, Subparts C and Z

2.4 Systems and Specifications, SSPC Painting Manual, Volume 2

2.5 NACE Book of Standards

2.6 S6360-AG-MAN-010, Camouflage Manual, Surface Ship Concealment

2.7 ASTM D 4417, Standard Test Methods for Field Measurement of Surface

Profile of Blast Cleaned Steel

2.8 ISO 8502-3, Assessment of Dust on Steel Surfaces Prepared for

Painting (Pressure Sensitive Tape Method)

2.9 S9086-CN-STM-020/CH-079, Damage Control - Practical Damage Control

2.10 S9086-VG-STM-010/CH-634, Deck Coverings

2.11 S9086-RK-STM-010/CH-505, Piping Systems

2.12 MS6310-081-015, Submarine Preservation

3. REQUIREMENTS:

3.1 General Preservation Requirements:

3.1.1 Consider marine coatings to contain heavy metals (e.g., lead, cadmium, or chromium), hexavalent chromium, crystalline silica and/or other toxic or hazardous substances.

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3.1.2 Accomplish safety precautions as specified in 2.2, 2.3, and the Work Item/task order during surface preparation and the application or removal of marine coatings.

3.1.3 Blast Media:

3.1.3.1 Submit material certification of abrasive blast

media conforming to MIL-A-22262 or A-A-1722 7 working days prior to blasting.

MIL-A-22262 abrasives must be listed on the Qualified Products List (QPL), │ or the contractor shall have written notification from NAVSEA indicating pending listing on the QPL. For A-A-1722 abrasives, a complete data package demonstrating compliance with the requirements must be provided by the supplier to the procuring activity. Exceptions are listed in 3.1.3.2 and 3.1.3.3.

3.1.3.2 Spongejet may be used as an alternative to obtain

SSPC-SP 10 or SSPC-SP 11 cleanliness.

3.1.3.3 Recyclable ferrous metallic abrasive materials

conforming to AB-3 of 2.4 may be used as an abrasive blast media for steel substrates. Cleanliness of recyclable ferrous metallic abrasive materials shall be measured and maintained in accordance with the requirements of AB-2 of 2.4.

3.1.3.4 For requirements specified in 3.1.3.3, submit one

legible copy, in hard copy or electronic media, of the results of the quality control requirements of Paragraph 6 of AB-2 and quality assurance test required by Paragraph 5 of AB-3 of 2.4.

3.1.4 Abrasive blast steel and aluminum plates, shapes, and ferrous piping, equal to NACE 2/SSPC-SP 10 of 2.4 and 2.5, establishing a surface profile that meets the requirements of 3.10.6, and prime, prior to shipboard installations except in the areas where weld joints remain to be accomplished, or unless specified otherwise in the invoking Work Item or task order.

3.1.4.1 Non-ferrous piping, which is to be preserved

shipboard, shall be hand tool (non-impact tools only) cleaned in accordance with SSPC-SP 2 of 2.4. Preservation of non-ferrous piping one inch in diameter or less does not require surface preparation.

3.1.5 For touch-up, disturbed, and/or inaccessible areas (terms are clarified in 3.6), the minimum surface preparation shall be that shown in Tables One through 9, except that an SSPC-SP 11 is acceptable for areas originally requiring a NACE 2/SSPC-SP 10 or NACE 5/SSPC-SP 12. For submarines this shall be determined by inspection and agreed to by the SUPERVISOR.

3.1.6 Feather edges of well-adhered paint remaining after cleaning for all surface preparation methods. Feathering is explained in more detail in 3.6.4.

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3.1.7 Clean insulation and lagging prior to painting; ensure such areas are free of foreign matter and contaminants that would prevent adherence of paint.

3.1.8 Clean and dry all prepared and previously painted surfaces;

ensure such surfaces are free of foreign matter that will affect adherence of paint coatings. Inclusions such as dust and debris in the paint film shall be removed prior to the application of the next coat.

3.1.9 Record and restore existing painted labels, compartment designations, hull markings, and other painted information which will be removed or covered during cleaning and painting operations.

3.1.10 Install masking material for protection of equipment and items not to be painted during preservation. Shipboard items not to be painted are listed in 2.2 and 2.12. Remove masking material upon completion of final coating.

3.1.11 Unless otherwise specified, all paints and coatings that are qualified to performance specifications (MIL-PRF) are to be applied in accordance with the manufacturer’s NAVSEA-approved ASTM F718 product data sheet. The dry film thickness (DFT) requirements stated herein take precedence over the NAVSEA-approved ASTM F718 data sheets if there is a conflict. The NAVSEA-approved ASTM F718 data sheets shall supersede any other manufacturer’s ASTM F718 data sheets for that product, even if it is newer (more recent) than the NAVSEA-approved ASTM F718 data sheets. Copies of the NAVSEA-approved ASTM F718 data sheets are available from the National Surface Treatment Center (NST Center) website: http://www.nstcenter.com.

3.1.12 Intentionally left blank.

3.1.13 Store paint and nonskid system components in a cool, dry place. Do not expose to freezing temperatures or direct sunlight. Monitor the storage temperature of paint and nonskid over the 24-hour period prior to use; document the minimum and maximum temperatures. If recorded manually, temperature shall be recorded once per shift during the 24-hour period.

Manual readings are not necessary if monitoring equipment is used that tracks minimum and maximum temperature for the 24-hour period.

3.1.13.1 For paint storage, ambient temperature shall be

maintained between 65 and 85 degrees Fahrenheit.

3.1.13.2 Nonskid system components shall be stored at a

temperature of 70-80 degrees Fahrenheit for at least 24 hours prior to mixing. Prior to 24 hours, they shall meet the storage requirements of their NAVSEA-approved ASTM F718.

3.1.14 When applying paint, multiple coats shall be of contrasting colors, unless specifically stated otherwise in Tables One through 9.

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3.1.15 When using multiple component (such as 2-part) coating systems (e.g. epoxies and polyurethanes), use of "partial kits" is prohibited unless using verified proportioning equipment or other verified measuring equipment (gravimetric).

3.1.16 For surface ships, for commercial underwater hull coating systems including anti-corrosive paints and anti-fouling paints, the manufacturer's primer must be used with its anti-fouling coating. No substitution is allowed. Successive coats of anti-corrosive paints shall be of a contrasting color. Coats of anti-fouling paints shall be of the colors stated in Tables One through 5.

3.1.16.1 For all ships, anti-fouling coatings may be

repaired, touched-up, and/or overcoated as defined in 4.3 with any other approved ablative anti-fouling system, and approved anti-fouling paints may be applied over any approved exterior anti-corrosive system. Anti-fouling coatings must be of the same "Type".

3.1.17 Apply the first coat of MIL-PRF-24647 anti-fouling paint when the last coat of epoxy paint is still slightly tacky (as defined in 3.6.4) (approximately 4 to 6 hours after paint application) and in accordance with applicable NAVSEA-approved ASTM F718. If the maximum recoat time for the epoxy is exceeded, apply a tack coat (explained in 3.6.1) of epoxy paint one to 2 mils wet film thickness (WFT) over previously painted surfaces. The tack coat shall be allowed to cure until tacky, then the next full coat of the system shall be applied.

3.1.18 Mix and apply all coatings in accordance with the product’s NAVSEA-approved ASTM F718, except for invoked requirements for surface preparation and Dry Film Thickness (DFT) as specified in Tables One through 9.

3.1.19 Boats and small craft that are embarked on surface ships or otherwise deployed should meet the camouflage requirements of 2.6.

3.1.20 Utilize water-based latex fire retardant paints in preference to chlorinated alkyd-based fire retardant paints in areas where condensation, high humidity, and temperatures below 50 degrees Fahrenheit are not expected during application and cure. Such paints are available under MIL-PRF-24596.

3.1.21 Mix and apply the Navy Polyamide Epoxy MIL-DTL-24441 coatings in accordance with the following, except the DFT shall be as specified in Tables One through 9. The MIL-DTL-24441 coatings’ mixing ratio is one-to-one by volume. The components of the various formulas are not interchangeable.

Blend each component thoroughly prior to mixing the components. After mixing equal volumes of the 2 components, the mixture must be thoroughly stirred.

For Type III only, the stand-in times listed below must be observed. There is no induction time for Type IV.

3.1.21.1 Stand-in time (induction time) for MIL-DTL-24441, Type III, is considered to be the time immediately following the mixing of

5 of 63 ITEM NO: 009-32 the components A and B during which the critical reaction period of these components is initiated and is essential to the complete curing of the coating. During stand-in time, the mixture must be thoroughly stirred at least once every 20 minutes to avoid hot spots caused by localized overheating from the chemical reaction.

Surface Temperature at Job Site (Degrees Fahrenheit) Stand-In Time in Hours

35 to 50 2 hours at 70 degrees Fahrenheit

(paint temperature) 50 to 60 2 hours at job site temperature

60 to 70 One hour to 1-1/2 hours at job site temperature 70 to 90 1/2 to one hour at job site temperature

3.1.22 For proper curing, the maximum application and cure

temperature for MIL-DTL-24441 products shall be 90 degrees Fahrenheit (ambient and surface temperature).

3.1.23 Powder coating application may be used if approved by the TYCOM; otherwise use applicable Lines in Tables One through 9. TYCOM approval shall denote specific items or classes of items and applications.

Powder coatings may match the color of the surrounding area or, if needed, may be overcoated with liquid paints. Powder coated items require near white metal blast, NACE 2/SSPC-SP 10, as minimum surface preparation. Any use of a chemical pretreatment (e.g., phosphate conversion coatings) requires approval by NAVSEA. QA checkpoints are still required for items that are powder coated.

3.1.23.1 For exterior applications and interior dry

applications of removable parts, powder coating shall conform to MIL-PRF- 24712.

3.1.23.2 For interior wet or immersion areas, powder coating

shall conform to MIL-PRF-23236, Type VIII.

3.1.23.3 Powder coatings are not practical for use on large

components or ship structure. Any large-scale applications to ship structure require approval by NAVSEA.

3.1.23.4 Powder coating is not authorized for use on

components, covers, or any parts to be installed in potable or reserve feed water tanks aboard nuclear powered ships.

3.1.24 Peel and stick nonskid has been approved for use in limited areas on surface ships.

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3.1.25 Coatings used on interior spaces of submarines are approved under the Submarine Atmosphere Control Program and listed on the Submarine Material Control List (SMCL). For interior use on submarines, only those MIL-PRF-23236, Type VII, coatings listed in Note (26A) may be used. For use in tanks, voids and freefloods on submarines, only those MIL-PRF-23236, Type VII, coatings listed in Note (26A) may be used.

3.1.26 For submarines, ensure that identified structural repair sites are not contaminated with paint overspray until repairs have been completed. Upon completion of structural repairs, the affected areas will be abrasive blasted to SSPC-SP-10 prior to paint application unless otherwise specified.

3.2 Stripe Coat Requirements:

3.2.1 For all areas where stripe coating is required, as denoted in Tables One through 9, apply stripe coat in accordance with applicable NAVSEA-approved ASTM F718 data sheet to edges, weld seams, welds of attachments and appendages, cutouts, corners, butts, foot/handholds (including inaccessible areas such as back side of piping, underside of I-beams), and other mounting hardware (non-flat surface). Stripe coat these areas after the previous full coat has dried. The stripe coat shall encompass all edges as well as at │ least a one-inch border outside each edge and weld. For submarines, solvent-based coatings shall have the stripe coat applied by brush; ultra high solids coatings (e.g. MIL-PRF-23236, Type VII) may have the stripe coat applied by brush or spray.

3.2.1.1 Each stripe coat shall be of the specified paint

system and shall be a different color from both the paint over which it is being applied and the next coat in the system (if a product only comes in 2 colors, the stripe coat shall contrast with the color of the previous coat).

Full coat inspection shall be conducted prior to stripe coat application.

3.3 Cure time is dependent on temperature; products applied at lower temperature will need more time to cure. This includes low temperature coatings. Cure time of each coat shall be IAW NAVSEA-approved ASTM F718 unless otherwise specified in the following requirements:

3.3.1 Drying time between coats of a specified coating for potable and feedwater tanks shall be a minimum of 48 hours at a minimum temperature of 70 degrees Fahrenheit (substrate and ambient), using heated air if necessary to maintain temperature. Ventilation shall be sufficient to ensure continuous flow of air through the tanks with at least one complete air change every 4 hours. │

3.3.2 Following coating applications, potable and feedwater tanks shall be continuously ventilated with a minimum of one complete air change every 4 hours for at least 7 consecutive days prior to filling with water.

During the ventilation period, maintain a minimum tank temperature of 70 degrees Fahrenheit (substrate and ambient). Verify and document daily that ventilation is properly installed and running.

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3.3.2.1 Freshly painted potable water tanks shall be filled

with potable water and emptied at least twice to ensure tank cleanliness.

3.3.3 Prior to application of any solvent-based alkyd coating, such as MIL-PRF-24635, over an epoxy coating, allow the epoxy to dry until it is no longer tacky (as defined in 3.6.4). It shall be dry to the touch but not fully cured before overcoating with any solvent-based alkyd coating.

3.3.4 Prior to application of any water-based coating, such as MIL- PRF-24596, over an epoxy coating, allow the epoxy to dry for at least 16 hours.

3.4 Overcoating of MIL-DTL-24441 with MIL-DTL-24441:

3.4.1 If less than 7 days has elapsed since the application of the prior coat, the next coat may be applied after visual inspection to confirm the absence of grease, dirt, salts, or other surface contaminants. If surface contamination is suspected as a result of visual inspection or for other reasons, the entire surface shall be cleaned in accordance with SSPC-SP 1 of 2.4. The next coat of MIL-DTL-24441 shall be applied after surfaces are completely dried.

3.4.2 If more than 7 days but less than 30 days has elapsed since the application of the prior coat, the entire surface shall be cleaned in accordance with SSPC-SP 1 of 2.4. Ensure the surface has fully dried, then apply a tack coat (one to 2 mils WFT) of the last coat applied or Formula

150. The tack coat (as defined in 3.6.1) shall be allowed to cure (dry) until tacky (as defined in 3.6.4); then apply the next full coat of the system. This condition can only be met one time during the painting system application.

3.4.3 If more than 30 days has elapsed since the application of the prior coat, the entire surface shall be cleaned in accordance with SSPC-SP 1 of 2.4. After allowing the surface to dry, the surface shall be lightly abraded to degloss the epoxy, using a brush-off abrasive blast (preferred), power sanding, or hand sanding using 80-120 grit, then apply the next full coat of the system.

3.5 Overcoating of Non-MIL-DTL-24441 Epoxy Coatings:

3.5.1 Follow the manufacturer's instructions for the allowable overcoat window, not to exceed 30 days. The 30-day maximum may be extended beyond 30 days if specifically approved in writing by NAVSEA. Where the base coat and topcoat are provided from different manufacturers, the term "manufacturer" refers to the manufacturer of the base coat. Application of a tack coat shall not restart the 30-day window.

3.5.1.1 If either the manufacturer's instructions or the 30-

day window (or a specific extension approved by NAVSEA) has been exceeded, 8 of 63 ITEM NO: 009-32 the coating shall be reactivated by following the manufacturer's instructions for reactivating the surface.

3.6 Clarification of Terms:

3.6.1 A tack coat is defined as a layer of paint with a reduced film thickness (e.g., 1-2 mils vice 5 mils); this does not imply that adding thinner is acceptable.

3.6.2 Touch-up is defined differently within this Standard Item between surface ships and submarines.

3.6.2.1 Touch-up is defined within this Standard Item for

surface ships as preservation operations on cumulative surface areas less than one percent of the total area (e.g., bilge, tank, space, etc.) being preserved, with no individual area greater than 10 square feet. Included under touch-up operations are new and disturbed surfaces of less than 10 square feet. The documentation requirements of 3.7 and 3.8 are waived for these touch-up areas. The requirements of 3.10.1, 3.10.2, 3.10.6, 3.10.7, 3.10.8, and 3.10.10 shall be verified by the accomplishing activity as (I) inspections for critical coated areas and (V) inspections for non-critical coated areas prior to coating applications. This waiver does not apply to potable or feedwater tanks.

3.6.2.2 Touch-up is defined within this Standard Item for

submarines as preservation operations on cumulative surface areas less than one percent of the total area (e.g., bilge, tank, space, etc.) being preserved, with no individual area greater than 4 square feet. Included under touch-up operations are new and disturbed surfaces of less than 4 square feet.

The documentation requirements of 3.7 and 3.8.1 are replaced with Appendix 9 for these touch-up areas (3.8.2 is still required). The requirements of 3.10.1, 3.10.2, 3.10.6, 3.10.7, 3.10.8, and 3.10.10 shall be verified by the accomplishing activity as (I) inspections for critical coated areas and (V) inspections for non-critical coated areas prior to coating applications. This waiver does not apply to potable or feedwater tanks.

3.6.2.3 For submarines, touch-up of MIL-PRF-23236, Type VII, coating systems with solvent-based coating systems qualified to MIL-DTL-24441, Type IV, or MIL-PRF-23236 is acceptable, or touch-up of existing MIL-DTL-24441 or MIL-PRF-23236 coatings with coatings approved to either specification is acceptable.

3.6.3 Disturbed surfaces are defined as any surface that requires cleaning and/or painting due to existing paint finish being damaged in the accomplishment of work specified by the Work Item or task order.

3.6.3.1 Exterior surfaces of underwater hull closure

plates/hull accesses and their associated welds will not be considered disturbed surfaces and shall be cleaned, prepared, painted, and documented in accordance with the applicable area. Deviations from the requirements may be authorized by the SUPERVISOR based on size, location, application, or

9 of 63 ITEM NO: 009-32 severity of condition of the coating system being applied. For submarines, this shall be determined by inspection and agreed to by the SUPERVISOR.

3.6.3.2 Interior surfaces of underwater hull closure

plates/hull access-associated welds shall be preserved in accordance with 3.1.5.

3.6.3.3 The word "new" in "new and disturbed surfaces"

refers to all material installed on the ship by the contractor regardless of source.

3.6.4 Tacky is defined as that curing (drying) stage when a

fingertip pressed lightly against the film leaves only a slight impression and none of the film sticks to the finger.

3.6.5 Feathering is used for transition of applying a fresh coating system to an area with an intact coating system that is not removed. To do this, visible areas of defective old paint shall be removed until an area of completely intact and adhering paint is attained around the defective area by feathering (tapering) the edges of tightly adhering old paint at an approximate 30 degree slope into the newly prepared bare metal surface thus preventing application of new paint over loose or cracked paint.

3.7 The following ship structural surfaces are defined as critical coated areas:

SURFACES TYPE OF SUBSTRATE

MK41 VLS launcher top and base All Underwater hull surfaces (including dielectric shields) All Cofferdams Steel and aluminum Hangar, flight, catapult, and vertical replenishment decks Steel and aluminum CV and CVN flight deck landing areas Steel and aluminum RAST track trough Steel and aluminum Well deck overheads Steel and aluminum │ Surface ship bilges Steel and aluminum Interior surfaces of intake vent plenums, defined as combustion air intakes (gas turbine, diesel, and steam) and other vent system intake plenums with openings greater than 7 square feet Steel and aluminum Uptake spaces Steel and aluminum Tanks (including sumps and covers) Steel and aluminum Voids Steel and aluminum All recesses on submarines Steel │ Interior surfaces of submarine sail and superstructure (fairwater) when SSPC-SP 10 accomplished Steel │ Aircraft Launch and Recovery Equipment (ALRE) system areas addressed in Table Notes (8) and (35) Steel

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3.7.1 Record and maintain in-process records in QA Tools Paperless QA program as blasting, painting, nonskid, inspections, and tests are being accomplished. QA Tools Paperless QA program and installation setup are available upon request from U.S. Fleet Forces Command N434, Attn.

Dale.Hirschman@navy.mil, (757) 836-3455.

3.7.1.1 Checklist Form Appendices are available at

http://www.nstcenter.com/NavyResources.aspx. QA documentation shall include

3.7.1.2 through 3.7.1.11.

3.7.1.2 Ambient and substrate surface temperatures, relative

humidity, and dew point during preservation process (QA Checklist Form Appendix 1);

3.7.1.3 Cleaning/degreasing prior to surface preparation

inspection results (QA Checklist Form Appendix 2);

3.7.1.4 Surface profile readings and surface preparation

method, including name of abrasive and QPL 22262 revision number from which the product was purchased, or copy of NAVSEA product approval letter. (QA Checklist Form Appendix 3);

3.7.1.5 Surface conductivity or chloride test results (QA

Checklist Form Appendix 4);

3.7.1.6 Surface cleanliness test results for dust

(QA Checklist Form Appendix 5);

3.7.1.7 Name of paint/nonskid, manufacturer, batch number, and date of manufacture and expiration (QA Checklist Form Appendix 6);

3.7.1.8 Name and type of spray equipment utilized

(QA Checklist Form Appendix 6);

3.7.1.9 Elapsed time between coats (QA Checklist Form

Appendix 6)

3.7.1.10 Dry film thickness (DFT) measurements (QA Checklist

Form Appendix 7) and/or wet film thickness (WFT) measurements (QA Checklist Form Appendix 7a);

3.7.1.11 Minimum and maximum storage temperatures of paint

and nonskid over the 24-hour period prior to use (QA Checklist Form Appendix 1).

3.8 Determine the type of surface preparation required and coating system options that are available for use in accomplishing the work.

3.8.1 For areas listed in 3.7, submit one legible copy, in hard copy or electronic media of Coatings Application Product Summary (CAPS) SHEET (QA Checklist Form Appendix 8), to the SUPERVISOR 7 working days prior to │ mailto:Dale.Hirschman@navy.mil http://www.nstcenter.com/NavyResources.aspx

11 of 63 ITEM NO: 009-32 starting the preservation process. The submittal shall include all the information identified in QA Checklist Form Appendix 8. The CAPSHEET │ shall be at the worksite throughout the preservation process.

3.8.2 For areas listed in 3.7, maintain on file the original

manufacturer's certificate of compliance and material conformance test data in accordance with Section 11 of 2.2. Documents shall be readily available to the SUPERVISOR upon request.

3.9 Maintain the following certifications for accomplishing preservation operations to areas as listed in 3.7. Information for these certifications can be found at www.sspc.org.

3.9.1 Coating inspectors shall be certified in accordance with the │ NAVSEA Basic Paint Inspector (NBPI) course or NACE Coating Inspector Program (CIP) Level 1, or higher.

3.9.2 Organizations performing blasting operations (abrasive and waterjetting) or coating application shall be certified in accordance with QP 1 of 2.4.

3.9.3 Spray painters shall be certified in accordance with SSPC C-12 or SSPC C-14 or NAVSEA 05P23-approved equivalent. For equivalent certifications, a copy of the NAVSEA approval letter shall be maintained by the contractor.

3.9.4 Plural Component Pump Tenders and Applicators shall be │ certified in accordance with SSPC C-14 or NAVSEA 05P23-approved equivalent certifications. For equivalent certifications, a copy of the NAVSEA approval letter shall be maintained by the contractor.

3.9.5 Blasters shall be certified in accordance with SSPC C-7 or NAVSEA 05P23-approved equivalent. For equivalent certifications, a copy of │ the NAVSEA approval letter shall be maintained by the contractor.

3.9.6 Blasters performing Ultra-High Pressure waterjetting shall be certified in accordance with SSPC C-13 or NAVSEA 05P23-approved equivalent.

For equivalent certifications, a copy of the NAVSEA approval letter shall be maintained by the contractor.

3.10 For all coating systems except surface ship nonskid, accomplish preservation operations in accordance with the following. For surface ship nonskid system application, refer to 3.11.

(V) "ENVIRONMENTAL READINGS"

3.10.1 For coatings, record ambient and substrate surface

temperatures, relative humidity, and dew point from conditions on-site, in close proximity to the structure being coated, for all areas listed in Tables One through 9, to verify that they meet the requirements of 3.10.1.4.

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3.10.1.1 For surface ships, these environmental readings

shall be taken from 12 hours prior to, to 48 hours after, the application of a coat of paint. For submarines, these environmental readings shall be taken from the start of blast operations through the final cure of the coating system. If a product fully cures in less than 48 hours, as defined on its NAVSEA-approved ASTM F718, environmental readings for that coat shall be taken until the product's final cure time is reached. For potable and feedwater tanks, environmental readings shall be taken from the start of surface preparation to 7 days after application of the final coat. For areas preserved under 3.6.2.1, environmental readings shall be taken from immediately prior to start of application to 24 hours after application of a coat of paint.

3.10.1.2 The preferred method of measurement is using a data

logger (Veriteq Instruments, Inc., Model No. KT-2000-NEI or equivalent). If a data logger is used, it shall collect data at a minimum of every 5 minutes.

Manual readings shall be taken once every 12 hours and at every evolution involving (G)-points. For areas listed in 3.7, manual readings shall be documented on QA Checklist Form Appendix 1.

3.10.1.3 If a data logger is not used, environmental readings shall be manually taken every 4 hours and at every evolution involving (G)-points. For areas listed in 3.7, readings shall be documented on QA Checklist Form Appendix 1.

3.10.1.4 Unless otherwise stated within the Notes of Tables

One through 9, and as noted in 3.10.1.5 and 3.10.1.6, coatings shall be applied only when the temperature of the prepared substrate is 50 degrees │ Fahrenheit or greater and a minimum of 5 degrees Fahrenheit above the dew point. The maximum relative humidity shall be 85 percent. For areas listed in 3.7, readings shall be documented on QA checklist Form Appendix 1.

3.10.1.5 MIL-PRF-23236, Type VII, Class 17 products are

exempt from dew point and relative humidity requirements. For these products, dew point and relative humidity do not need to be recorded on QA Checklist Forms.

3.10.1.6 The only products that may be applied below 50

degrees Fahrenheit are those specified in the Tables and Notes for use below 50 degrees Fahrenheit.

(I) or (I)(G) "CLEANLINESS" (See 4.4)

3.10.2 Accomplish degreasing/cleaning prior to surface preparation to ensure that the surface is free of contaminants, such as sea salts, mud, │ marine growth, grease, oil, and other petroleum products, in accordance with SSPC-SP 1 of 2.4. For areas listed in 3.7, document on QA Checklist Form Appendix 2.

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3.10.2.1 Inspect the surface a maximum of 4 hours prior to

start of coating removal to ensure accomplishment of SSPC-SP 1. For areas listed in 3.7, document on QA Checklist Form Appendix 2.

3.10.3 Except for tanks, surface preparation by abrasive blasting │ is prohibited on submarine interior surfaces, with the exception that self-contained sponge jet surface preparation is permissible in submarine machinery spaces.

3.10.4 Intentionally left blank.

3.10.5 Limit the square footage of surfaces being prepared for preservation to an area that can be coated prior to the occurrence of flash rusting and/or oxidation. Remove any flash rust prior to painting, except as follows:

3.10.5.1 Surfaces cleaned by waterjetting shall meet the

applicable NACE/SSPC Standard for flash rust. For submarines, the first coat of epoxy primer shall be applied within 24 hours of paint removal by waterjetting.

3.10.5.2 The water used in waterjetting shall not include

detergents or inhibitors without written approval from the coating manufacturer and the SUPERVISOR.

(I) or (I)(G) "SURFACE PROFILE"(See 4.4)

3.10.6 One profile reading shall be taken for every 200 square feet for the first 1,000 square feet; for each additional 1,000 square feet, 2 profile readings shall be taken. Profile readings shall be taken in accordance with Method B or Method C of 2.7. For profile readings taken in │ accordance with Method C of 2.7, use profile tape suitable to read subject profile, i.e., coarse to extra-coarse plus; three (3) individual tapes result in one (1) profile reading. If areas are found to be greater than 5 mils, use Method B of 2.7 in those areas to determine existing profile. The retention of Testex tape is not required. For areas listed in 3.7, document surface profile on QA Checklist Form Appendix 3.

3.10.6.1 Following blasting or waterjetting operations, surface peak-to-valley profile must be checked. For Method B of 2.7, each profile reading shall be between 2 and 4 mils. For Method C of 2.7, each profile reading shall be between 2 and 4 mils, with no individual tape reading less than one mil or more than 5 mils. If such profile is not present, contractor shall establish the proper profile.

3.10.6.2 Following power tool cleaning to SSPC-SP 11 of 2.4, surface profile shall be checked. For submarines, one mil minimum profile is acceptable for all areas. For surface ships, profile readings shall be 2 mils minimum for areas listed in 3.7 and one mil minimum for all other areas where accessible (inaccessible areas must be determined by inspection and agreed to by the SUPERVISOR).

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3.10.6.3 When surface profile requirements of the NAVSEA-

approved ASTM F718s are greater (higher in value) than that specified in this item, the NAVSEA-approved ASTM F718 surface profile requirements shall supersede this item. For products without a NAVSEA-approved F718, manufacturer’s instructions may be substituted.

3.10.6.4 Avoid excessive power wire brushing or excessive

grinding/sanding which results in a polished surface.

3.10.6.5 Conversely, excessive use of mechanical tools

(grinders, sanders, chippers, etc.) must be minimized to avoid metal loss.

Overly aggressive blasting which causes metal thickness loss over the amount required for surface profile shall also be avoided. Excessive depth of profile can cause problems with poor coating performance. A greater than recommended surface profile requires a paint film be applied to totally cover the profile to prevent pinpoint or flash rust. The increase in paint film thickness also increases the susceptibility of solvent entrapment, causing blistering and premature failure of the coating.

3.10.6.6 Due to the potential for excessive metal loss, for

SSN-21 and SSN-774 Class submarines, only the following power tools may be used to obtain an SSPC-SP 11 surface: needle guns and rotopeens. On submarines, any areas of potential metal loss by corrosion or mechanical means shall be documented and reported to the SUPERVISOR.

3.10.6.7 Spongejet may not establish a sufficient surface

profile. If this method is employed and the profile is insufficient to meet the requirements, the contractor shall establish a sufficient surface profile.

3.10.6.8 Waterjetting will not establish a surface profile.

If this method is selected by the contractor and a surface profile does not exist or is insufficient to meet the requirements, the contractor shall establish a sufficient surface profile.

(I)(G) "CONDUCTIVITY OR CHLORIDE MEASUREMENT"

3.10.7 For surfaces listed in 3.7, accomplish the requirements for conductivity or chloride measurements as follows:

3.10.7.1 Following coating removal, accomplish conductivity

or chloride measurements in accordance with the requirements of 3.10.7.3.

3.10.7.2 Additionally, accomplish a visual inspection within

4 hours prior to application of each coat of paint. If evidence of contamination of the surface exists, accomplish the requirements of 3.10.7.3.

3.10.7.3 Accomplish surface conductivity or chloride checks

using available field or laboratory test equipment on the freshly prepared surface. One reading shall be taken for every 200 square feet for the first

15 of 63 ITEM NO: 009-32

1,000 square feet. Five determinations shall be conducted for every additional 1,000 square feet. For immersed applications, such as tanks and │ bilges, chloride measurements shall not exceed 3 ug/cm2 (30 mg/m2);

conductivity measurements shall not exceed 30 micro siemens/cm. For non-immersed applications, chloride measurements shall not exceed 5 ug/cm2 (50 mg/m2); conductivity measurements shall not exceed 70 micro siemens/cm.

Conductivity samples shall be collected using the Soluble Salt Conductivity Measurement according to Bresle Method or approved equivalent. Document on │ QA Checklist Form Appendix 4.

3.10.7.4 Because conductivity testing measures more than just chlorides, for any conductivity check that fails, a confirmatory chloride check may be conducted to confirm chloride levels. If the chloride levels do not exceed the requirements in 3.10.7.3, the measurement passes the conductivity/chloride check.

3.10.7.5 If a conductivity check fails and the confirmatory

chloride check is not conducted, or if chloride measurements exceed the │ respective values, water wash (3000–5000 PSI) the affected areas with fresh water (maximum conductivity of 200 micro siemens/cm). Dry the affected areas and remove all standing water. Accomplish surface conductivity or chloride checks on affected areas in accordance with 3.10.7.3. Repeat step until satisfactory levels are obtained. │

(I) or (I)(G) "SURFACE PREPARATION" (See 4.4)

3.10.8 Verify surface preparation for the coating systems specified in the Work Item/task order and Tables One through 9 are in accordance with

2.4 and 2.5. For areas listed in 3.7, document on QA Checklist Form Appendix 3.

3.10.8.1 For surface ships, surface cleanliness for dust

shall be accomplished for the underwater hull and documented on QA Checklist Form Appendix 5. Surface cleanliness for dust shall meet Rating 2, Class 2, of 2.8. One dust tape reading shall be taken for every 200 square feet for the first 1,000 square feet; for each additional 1,000 square feet, 2 tape │ readings shall be taken. The tape reading requirement is waived if the surface was prepared using UHP (ultra high pressure) waterjetting only and the primer is applied within 6 hours of completion of surface preparation.

3.10.8.2 The checkpoints of 3.10.6, 3.10.7, and 3.10.8 can be accomplished concurrently.

3.10.9 Coating systems shall be applied in accordance with this NAVSEA Standard Item and applicable NAVSEA-approved ASTM F718s as defined in 3.1.11.

3.10.9.1 For surface ship preservation of areas not listed in Tables One through 5, see the Tables in Volume 1 of 2.2. For submarine preservation of areas not listed in Tables 6 through 9, see the Tables in 2.12.

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3.10.9.2 Paints shall not be thinned.

(I) or (I)(G) "COATING INSPECTION FOR EACH PAINT COAT" (Consists of Dry Film Thickness, Holidays, and Cleanliness) (See 4.4)

3.10.10 Inspect each Prime, Intermediate, Stripe, Build, Tack, and Top Coat as follows:

3.10.10.1 Accomplish DFT measurements of each coat applied

for the coating systems listed in Tables One through 9. This excludes any stripe coats. For areas listed in 3.7, document on QA Checklist Form Appendix 7.

3.10.10.2 Accomplish a visual holiday check on each coat of

the system for areas listed in 3.7 and document on QA Checklist Form Appendix

7. Any holiday found shall be identified and touched up.

3.10.10.3 Accomplish a visual inspection for surface

cleanliness. If evidence of contamination exists, accomplish degreasing/cleaning a maximum of 4 hours prior to application of next coat of paint to ensure removal of surface contaminants. For areas listed in 3.7, document on QA Checklist Form Appendix 7 or 7A. If condition is UNSAT, then also use Appendix 2.

3.10.10.4 Accomplish a visual inspection for chloride

contamination for areas listed in 3.7. If evidence of chloride contamination exists, accomplish requirement of 3.10.7.2 a maximum of 4 hours prior to application of next coat of paint to ensure removal of surface contaminants.

Document on QA Checklist Form Appendix 7 or 7A. If condition is UNSAT, then also use Appendix 4 as required in 3.10.7.

3.10.11 For Dry Film Thickness (DFT) readings required in 3.10.10.1, DFT readings for each coat shall be taken in accordance with Method PA 2 of

2.4. When measuring full coats to determine total system thicknesses denoted in Tables One through 9, DFT readings shall not be taken in areas where stripe coatings have been applied.

3.10.11.1 WFT readings are required in lieu of DFT readings

for any coat that must be in a tacky state (as defined in 3.6.4) when the next coat is applied and for non-metallic surfaces. For metallic surfaces, the number of WFT spot readings shall be 2 readings per 1,000 sq ft. For non-metallic surfaces, the number of WFT spot readings shall equal the number of DFT readings that would have been taken. WFT equals DFT divided by percent solids by volume (when percent solids by volume is expressed as a decimal, i.e., 60 percent equals 0.60). For areas listed in 3.7, document on QA Checklist Form Appendix 7a.

3.10.11.2 Apply an additional coat of any single coat of a

multiple coat system when that coat measures less than its specified DFT.

DFT of each coat, including an additional coat if applied, shall not exceed

17 of 63 ITEM NO: 009-32 the specified maximum thickness for each coat as specified in Tables One through 9. If an additional coat is required, all QA requirements shall be accomplished for the additional coat.

3.10.11.3 During paint application, a WFT gage shall be used

to verify the application of proper paint thickness for the primer coat of all coating systems listed in Tables One through 9. WFT readings shall be taken to confirm this, but need not be recorded.

3.11 Accomplish preservation operations for surface ship nonskid systems in accordance with the following:

(V) "ENVIRONMENTAL READINGS"

3.11.1 Accomplish the requirements of 3.10.1 (environmental) with the following additions:

3.11.1.1 Record ambient and substrate surface temperatures, relative humidity, and dew point readings at one-hour intervals during actual surface preparation and nonskid system application.

3.11.1.2 Do not apply sprayed components of nonskid systems

when sustained winds exceed 15 MPH.

3.11.1.3 Unless the applicable NAVSEA-approved ASTM F718 is

more stringent, ambient air temperature shall be 55-100 degrees Fahrenheit, deck temperature for primer application shall be 40-120 degrees Fahrenheit, and deck temperature for nonskid application shall be 40-110 degrees Fahrenheit. Deck temperature shall be a minimum of 5 degrees Fahrenheit above the dew point for nonskid system application. │

3.11.2 Accomplish the requirements of 3.10.2 through 3.10.4 with the following additions:

3.11.2.1 If cleaning is performed via solvent wiping, after

solvent wiping, the deck shall be allowed to dry for a minimum of 2 hours at ambient conditions before application of any primer. No solvent shall be present on deck surfaces prior to proceeding with the next process step.

3.11.2.2 When a solvent wipe is performed, annotate Appendix

2 with type of solvent and time allowed to dry.

(I) or (I)(G) “SURFACE PROFILE” (See 4.4)

3.11.3 Following blasting or waterjetting operations, surface peak-to-valley profile shall be checked. For each area of preparation, one profile reading shall be taken every 100 sq ft for the first 500 sq ft. If │ the profile readings are consistent, only one profile reading shall be taken for every 1,000 sq ft remaining. The anchor tooth profile for nonskid shall be 3 to 4.5 mils. If such profile is not present, contractor shall establish proper profile. Profile readings shall be taken in accordance with Method B

18 of 63 ITEM NO: 009-32 or Method C of 2.7. For profile readings taken in accordance with Method C of 2.7, use profile tape suitable to read subject profile, i.e., coarse to extra-coarse plus; three (3) individual tapes result in one (1) profile reading. If areas are found to be greater than 5 mils, use Method B of 2.7 in those areas to determine existing profile. The retention of Testex tape is not required. For areas listed in 3.7, document on QA Checklist Form Appendix 3.

3.11.3.1 For nonskid areas that abrasive blast equipment or

waterjet equipment cannot access, substrate shall be prepared to SSPC-SP 11, except that minimum profile shall be 2 mils where accessible.

3.11.4 Accomplish the requirements of 3.10.7 for conductivity/ chloride measurements.

3.11.5 Accomplish the requirements of 3.10.8 for surface preparation in accordance with 2.10.

3.11.5.1 Surface cleanliness for dust shall be accomplished

for nonskid flight decks and documented on QA Checklist Form Appendix 5.

Surface cleanliness for dust shall meet Rating 2, Class 2, of 2.8. Three individual readings shall be taken every 100 sq ft for the first 500 sq ft.

If the tape readings are consistent, only one tape reading shall be taken for every 1,000 sq ft remaining. The tape reading requirement is waived if the surface was prepared using UHP (ultra high pressure) waterjetting only and the primer is applied within 6 hours of completion of surface preparation.

3.11.6 Nonskid systems shall be applied in accordance with the applicable Tables.

3.11.7 Accomplish the requirements of 3.2 for stripe coat with the exception that stripe coat may precede prime coat.

3.11.7.1 For overcoating of stripe coat or stripe coating of

the primer coat, refer to the applicable NAVSEA-approved ASTM F718.

3.11.8 Nonskid application shall occur within 36 hours of primer application.

3.11.8.1 If nonskid application occurs within 36 to 72 hours

after primer application, the primer coat shall be solvent wiped with a manufacturer's approved solvent.

3.11.8.2 If nonskid application occurs within 3 to 7 days

after primer application, the primer coat shall be solvent wiped with a manufacturer's approved solvent, then lightly abraded, solvent wiped again, and a tack coat (one to 2 mils) of primer shall be applied.

3.11.8.3 If the primer coat is not overcoated with nonskid

within 7 days of primer application, the primer shall be removed and the surface preparation repeated.

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3.11.8.4 Aircraft carrier landing areas not overcoated with

nonskid within 72 hours of primer application shall have surface preparation repeated.

3.11.9 Accomplish the requirements of 3.10.10 and 3.10.11 for coating inspection of nonskid primer (full and stripe coats).

(I) or (I) (G) “NONSKID SPREAD RATE AND HOLIDAY INSPECTION” (See 4.4)

3.11.10 Accomplish the requirements of 634-3.35.6 Paragraph 5 of

2.10 for spread rate and visual holiday inspection of nonskid and document on QA Checklist Form Appendix 7.

3.11.11 Inspect the location and color of required visual landing aid (VLA) markings in accordance with Naval Air Warfare Center Aircraft Division (NAWCAD) Class Guidance Drawings, Air Capable Ship Aviation Facilities Bulletin, Amphibious Assault Ship Aviation Facilities Bulletin, Shipboard Aviation Resume (NAEC-ENG-7576), VLA General Service Bulletin No. 8 (latest revision) or by contacting the local NAWC (CAFSU/ASIR) Field Office.

4. NOTES:

4.1 Wet space decks include sanitary spaces (washrooms, water closets, │ and showers), food service spaces (galley, scullery, butcher shop, bakery, meat prep rooms, and food service line), and trash compactor rooms.

4.2 Total DFT encountered during removal may exceed specified Table thicknesses.

4.3 Total removal of ablative coating is not required. An ablative copper AF coating system shall not be removed by blasting prior to its specified service life unless it is blistered, peeling, or otherwise damaged beyond repair. Stable and intact ablative AF coatings shall be retained and over-coated. The total film thickness of the combined retained and freshly applied paint shall comply with Table 1/Table 6. When the work specification calls for over-coating of retained intact ablative copper AF coating, AF surfaces shall be washed down with fresh water at 2000 psi as the vessel comes out of the water, in order to prevent slime and oxidized paint from drying on the hull and inhibiting leaching of the paint when the ship is returned to the water. The surface shall be cleaned and dried before new │ paint is applied. Apply any AC paint to areas in need of repairs and then overcoat with the identical AF system. The Work Item or task order will specify the degree of removal.

4.4 The paragraphs referencing this note are considered an (I)(G) if the inspection/test is on a critical surface as listed in 3.7. If the inspection/test is not on a surface listed in 3.7, then the paragraph is considered an (I). These inspection point requirements also apply to build-up coats to obtain proper millage.

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4.5 Refer to 009-03 of 2.1 as appropriate for requirements concerning potential exposure to toxic or hazardous substances and hazardous operations.

4.6 Structural requirements of Notes (23) and (24) will be addressed by the invoking Work Item or task order.

4.7 The Contractor may use environmental enclosures to control environmental conditions.

4.8 Preservation Process Instructions (PPIs) provide detailed instructions and procedures for specific ship preservation evolutions to include safety precautions, surface preparation, selection of appropriate coating systems, and third-party quality assurance check points. See new Section 12 of 2.2 for details.

4.9 Preservation system repairs are an Unrestricted Operations (URO) Maintenance Requirement Cards (MRC) program attribute.

4.9.1 The Unrestricted Operations (URO) Maintenance Requirement Cards (MRC) program was developed by NAVSEA to monitor specific areas of interest to determine if the conditions of these areas are suitable for continued unrestricted operations. Maintaining the protective capability of the coating system is critical to maintaining structural integrity during the periods between inspections. For this reason, complying with requirements for coating system application for all aspects of the preservation process is essential. Other systems that impact the URO MRC program are Special Hull Treatment (SHT) application process, including Mold-In-Place (MIP), maintenance of cathodic protection systems (Impressed Current Cathodic Protection (ICCP) and anodes) and installation of various types of tiles (acoustic, damping, etc).

4.9.1.1 Substrate preparation is not authorized/covered in

this Standard Item for damping tile, acoustic tile, Special Hull Treatment (SHT), and Mold-In-Place (MIP), vertical launch system (VLS) bathtub area, thin line towed array (TLTA), bow domes, interior, and retractable bow plane recesses on submarines.

4.9.2 Preservation work in submarine tanks and enclosed spaces is usually scheduled to occur when the tanks and spaces are opened and entered to perform URO MRC structural inspections. Any time a tank or other enclosed space is entered, if a URO MRC 003 structural inspection is not authorized, the government will be performing a structural visual examination.

4.9.3 Any URO MRC item being blasted and painted will have a URO MRC hull survey inspection performed by the government prior to blasting and again prior to repainting.

4.10 Painting of rubber piece parts of pipe hangers is permitted in the following areas: Main Ballast Tanks (MBTs), freeflood areas, and internal tanks which are normally painted. The rubber piece parts include the liners, grommets, and inserts found in steel strap and steel block type pipe hangers;

21 of 63 ITEM NO: 009-32 also included is the block rubber type pipe hangers. This allowance does not include internal tanks under nuclear cognizance, nuclear piping which traverses other non-Nuclear tanks, or potable water tanks.

4.11 Table One is for surface ship underwater hull areas. Table 2 is for surface ship exterior areas. Table 3 is for surface ship interior spaces.

Table 4 is for surface ship tanks and voids. Table 5 is for surface ship miscellaneous areas. Table 6 is for submarine exterior hull areas. Table 7 is for submarine interior areas.