Att 2 - DRAFT J-10 Preservation Instructions.pdf

Pacific Training Vessel (P-TSV) Preservation Instruction

1. AUTHORIZED MARINE COATINGS

Only paint and paint materials that are in accordance with Navy standard formulas and specifications, or approved by NAVSEA, shall be used. Only paint that complies with all local, state, and federal environmental regulations shall be applied. NAVSEA approved products are listed on the Qualified Products Database, https://qpldocs.dla.mil/default.aspx.

2. PREPARATION

1. Protect, mask or seal all areas noted below that are NOT to be coated.

2. Pressure-wash all effected surfaces with clean, fresh water prior to any abrasive-blasting work. Thoroughly wash all exterior hull bottom surfaces to completely remove accumulated dirt and grit as a result of ongoing shipyard work.

3. Allow all surfaces to dry prior to abrasive blasting work

3. SURFACE PREPARATION

All steel surfaces shall be prepared by either of the following methods – except as otherwise specified herein:

b. Abrasive blasting to SSPC-SP-10/NACE #2, Near White Metal

c. Waterjetting to SSPC-SP-12/NACE #5, Condition WJ-2L

The surface profile shall be 2-4 mils. New welds resulting from hull cuts or other work performed on the hull shall be abrasive blasted to SSPC-SP-10; hand and power tool cleaning is insufficient.

Blow-off all surfaces with clean, dry, oil-free air to remove all grit and dust after abrasive-blast cleaning.

4. UNDERWATER HULL

The vessel hull bottom shall have the existing antifouling (AF) coating removed to bare metal.

The hull bottom shall be coated with a new anti-corrosive (AC) and AF system. Any new hull bottom shell plate, surrounding disturbed coatings, and hull inserts shall also be coated with the entire primer/AF marine coating system specified

EXTERNAL SURFACES TO BE COATED BELOW THE WATERLINE

1. Hull bottom shell plating, bottom of keel to chine

2. Hull side shell plating, chine to boot top

3. Transom

4. Sea chest interior

5. Sea chests strainer plates

6. Transducer sea chest interiors and cover plates

7. Stern tubes

8. Struts

9. Rudders

10. Skeg

11. Engine Grid-cooler mounting brackets and protective guards https://qpldocs.dla.mil/default.aspx

SURFACES NOT TO BE COATED BELOW THE WATERLINE

1. Main propulsion propellers

2. Main propulsion shafting

3. Transducer faces

4. Zinc anodes

5. Zinc anode mounting studs

6. Machinery Oil and Engine Grid-coolers

BOOT TOP INTERFACE

1. The above waterline coatings and below waterline AF coatings shall be overlapped at the ship’s waterline to form a boot top area.

2. Strike the upper edge of the boot top 12 inches above the maximum load waterline. This shall be the top of the new AF coating system.

3. Overlap side shell primer coats over bottom shell primer coats at the boot top.

4. Mask-off and apply the two final AF coats over all prime/top coatings and up to the boot top. The haze gray MIL-PRF-24635 must not overlap onto the black MIL-PRF-24647 antifouling topcoat.

ANTI-FOULANT SYSTEM APPLICATION (FOR BARE STEEL SURFACES)

2. INITIAL PRIME COAT: Apply a 5-7 mils D.F.T. coat of MIL-PRF-24647 Type I or II anti-corrosive (AC) primer “OXIDE RED”.

3. SECOND PRIME COAT: Apply a 5-7 mils D.F.T. coat of MIL-PRF-24647 Type I or II anti-corrosive (AC) primer “BUFF”.

4. FIRST AF Coat: Apply a 5-7 mils D.F.T. coat of MIL-PRF-24647 Type II, “RED”.

5. SECOND AF COAT: Apply a 5-7 mils D.F.T. coat of MIL-PRF-24647 Type II, “BLACK”.

6. THIRD AF COAT: Apply a 5-7 mils D.F.T. coat of MIL-PRF-24647 Type II, “RED”.

7. DRAFT MARKS (Boot top and below): Apply a 5-8 mils D.F.T. coat of MIL-PRF-24635 Type V or VI, Class 2, low solar absorbent, “LIGHT GREY”.

8. CURING: Observe all minimum over-coating intervals in accordance with manufacturer’s specifications and NAVSEA 009-32. (See product data sheets for correct over-coating intervals at existing surface temperatures).

5. VERTICAL SURFACES ABOVE WATERLINE, AND MASTS AND STACKS

LOCATIONS TO BE PRESERVED

1. Side shell plate from boot top to top of bulwarks

2. Transom, from boot top to top of main deck edge, including aft bulwarks

3. Inboard sides of port and starboard bulwarks (aft, main deck)

4. Inboard sides of port and starboard bulwarks (all weather decks)

5. Exhaust stacks

6. Pilot house (sides, front, and roof/sunshield) and top deck

7. All topside verticle surfaces

MARINE COATING APPLICATION

1. Apply the following marine coating system to all prepared topside surfaces listed above.

2. All coating application work shall be scheduled on a not-to-interfere-basis in surrounding areas where any hot-work is ongoing.

3. PRIME COAT: Apply a 5-7 mils D.F.T. coat of MIL-PRF-24647 Type I or II anti-corrosive (AC) primer.

4. STRIPE COAT: Apply a 5-7 mils D.F.T. coat of MIL-PRF-24647 Type I or II anti-corrosive (AC) primer.

5. TOPCOAT: Apply a 5-8 mils D.F.T. coat of MIL-PRF-24635 Type V or VI, Class 2, low solar absorbent, “HAZE GREY”.

6. DRAFT MARKS AND HULL MARKINGS: Apply a 5-8 mils D.F.T. coat of MIL-PRF-24635 Type V or

VI, Class 2, low solar absorbent, “LIGHT GREY”.

7. COLOR SCHEME: NSTM 505 color scheme shall be followed for all topcoat color of vents and valves.

8. CURING: Observe all minimum over-coating intervals in accordance with manufacturer’s specifications and NAVSEA 009-32. (See product data sheets for correct over-coating intervals at existing surface temperatures).

6. HORIZONTAL SURFACES, WEATHER DECKS, AND DECK FITTINGS

1. Apply the following marine coating system to all prepared weather deck surfaces with the exception of areas receiving non-skid.

2. All coating application work shall be scheduled on a not-to-interfere-basis in surrounding areas where any hot-work is ongoing.

3. PRIME COAT: Apply a 5-7 mils D.F.T. coat of MIL-PRF-24647 Type I or II anti-corrosive (AC) primer.

4. STRIPE COAT: Apply a 5-7 mils D.F.T. coat of MIL-PRF-24647 Type I or II anti-corrosive (AC) primer.

5. TOPCOAT: Apply a 5-8 mils D.F.T. coat of MIL-PRF-24635 Type V or VI, Class 2, low solar absorbent, “HAZE GREY”.

6. CURING: Observe all minimum over-coating intervals in accordance with manufacturer’s specifications and NAVSEA 009-32. (See product data sheets for correct over-coating intervals at existing surface temperatures).

7. EXTERIOR WALK AREAS

1. Apply the following marine coating system to all prepared exterior walk areas and working deck.

2. MIL-PRF-24667 nonskid systems must be applied as a complete system from the same manufacturer. The use of any manufacturer’s MIL-PRF-24667 color topping is authorized over any MIL-PRF-24667 nonskid

3. Peripheral deck edging and areas not receiving non-skid may use either the manufacturer’s MIL-

PRF-24667 color topping or MIL-PRF-24635 Type V.

4. Nonskid must be applied to within 2-3 inches of deck fittings and protrusions. Nonskid must be applied to within 4-6 inches from coamings and deck edges. Areas underneath protrusions, such as stowage racks or fire stations that are normally found on working decks not subject to vehicle movement, need not comply with the 4-6 inch rule for applying nonskid near deck edges.

5. All coating application work shall be scheduled on a not-to-interfere-basis in surrounding areas where any hot-work is ongoing.

6. PRIME COAT: Apply coat of proprietary nonskid primer listed on the QPL for MIL-PRF-24667

Type V, Comp G.

7. STRIPE COAT: Apply coat of proprietary nonskid primer listed on the QPL for MIL-PRF-24667

Type V, Comp G.

8. NONSKID: Apply coat of MIL-PRF-24667 TYPE V, Comp G

9. CURING: Observe all minimum over-coating intervals in accordance with manufacturer’s specifications and NAVSEA 009-32. (See product data sheets for correct over-coating intervals at existing surface temperatures).

8. POTABLE WATER TANKS

The contractor shall open and inspect all potable water tanks aboard the vessel. The existing potable water tanks coating condition must be “good” under the ABS guidelines for condition assessment. “Good” is defined by ABS as a condition with only minor spot rusting. Any tank coating not found to be in good condition shall be recoated following the specification below. All

Surface preparation and coating application shall be done in accordance with the manufacturer’s instructions and product data sheets.

1. For MIL-PRF-23236 Type VII Class 9, 9/18, 11, and 11/18 paints, follow the NAVSEA-reviewed ASTM F718 for temperatures, cure and recoat times. This supersedes the 70 degree Fahrenheit, 36/12-hour/5 day requirement.

2. Maintain the relative humidity in the tank at a maximum of 50 percent from surface preparation checkpoint acceptance until cure to recoat time of final touch-up of the topcoat; relative humidity must be maintained at a maximum of 85 percent from cure to recoat for the final touch-up of the topcoat through cure to service.

3. PRIME COAT: Apply a 4-8 mils D.F.T. coat of MIL-PRF-23236, Type Vii, Class 9 primer.

4. TOP COAT: Apply a 10-12 mils D.F.T. coat of MIL-PRF-23236, Type Vii, Class 9, “WHITE” or

“OFF WHITE”.