SOW - CGC WILLIAM TRUMP - 01 Deck Preservation.pdf

USCGC WILLIAM TRUMP (WPC-154) DOCKSIDE AVAILABILITY FY2021

S20_004_63121_ENV_0421_1111

WORK ITEM 6: Decks - Exterior, Partial Preserve

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to renew a section of weather deck nonskid and coating system on the main deck, approximately 620 sqft.

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 154 WPC 601-302, Rev D, General Arrangement Coast Guard Drawing 154 WPC 634-301, Rev B, Deck Covering Schedule

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 6310 (SFLC Std Spec 6310), 2020, Requirements for Preservation of Ship Structures Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2020, General Requirements

OTHER REFERENCES

MIL-PRF-24667C, May 2008, Coating System, Non-Skid, for Roll, Spray, or Self-Adhering

Application QPL-24667, May 2008, Qualified Product List (Military) of Products Qualified Under Detail

Specification MIL-PRF-24667, Coating System, Non-Skid, for Roll, Spray, or Self- Adhering Application

Commercial Item Descriptions (CID) A-A-59316, Nov 2003; Abrasive Materials for Blasting

3. REQUIREMENTS

3.1 General.

3.1.1 CIR.

None.

3.1.2 Tech Rep.

None.

3.1.3 Protective measures. The Contractor must furnish and install all protective measures in accordance with SFLC Std Spec 0000, paragraph 3.3.3 (Vessel component, space, and equipment protection).

3.1.3.1 Apply protective measures as specified in SFLC Std Spec 0000, paragraph 3.3.3 (Vessel component, space, and equipment protection) to the following components, spaces and equipment:

Adjacent vertical (beyond what is specified in paragraph 3.3.1 (System particulars)).

Ventilation intakes.

Deck fittings.

Deck equipment.

Ladders, lifelines and stanchions.

Deck penetration, goosenecks and vents.

AMIO tent canvas.

3.1.4 Interferences. The Contractor must handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences). Known interferences include, but are not limited to the following:

Deck fittings and deck equipment.

Ladders, lifelines and stanchions.

Vent piping and fill connections.

Deck lockers.

3.2 Surface preparation water quality. The Contractor must ensure that water in all surface preparation tasks, including pre-surface preparation wash and water jetting is of sufficient purity and quality that it does not prevent the surface being cleaned from achieving the required degree of surface cleanliness or non visible contamination criteria. Ensure that surface preparation water does not contain sediments or other impurities that are destructive to the proper functioning of the cleaning equipment.

3.3 Preservation requirements particulars. The Contractor must accomplish the following tasks. Use Coast Guard Drawing 154 WPC 601-302 and 154 WPC 63-301, sheet 5 as reference.

3.3.1 Pre-surface preparation wash. Prior to accomplishing surface preparation, accomplish low-pressure (less than 5,000 psi) fresh water wash of all affected surfaces, to remove soluble chlorides and other surface contaminants. Capture, contain, and dispose of wash water for proper disposal in accordance with all Federal, state and local regulations.

3.3.2 Surface preparation and coating application. Prepare and coat the deck surfaces from the port and starboard side forward of QAWTD's 1-27-1 and 1-27-2 aft to the Fantail (frame 43) approximately 620 sqft, including bitt and chock foundations, machinery rack guards and machinery foundations, hatches and hatch guards, stanchion sockets, vent pipes, angle coaming area, and approximately six inches up all adjacent vertical surfaces (as applicable); use the system specified for “Weather Decks, Non-Skid, MIL- SPEC Coating for Steel or Aluminum”, in SFLC Std Spec 6310, Appendix A (Cutter and Boat Exterior Painting Systems).

3.3.2.1 Substrate inspection. After completion surface preparation and before coating application, perform a visual inspection of the prepared substrate, and submit a CFR.

3.3.2.2 Color selection. Select and use Gray (16099) as the finish/top coat color.

3.3.2.3 Non-skid exempted areas. Apply top color coating only (do not apply non-skid topcoat) over vertical surfaces, and the following areas:

Within two inches of deck fittings and protrusions.

Within six inches of deck coamings, bulkheads, and deck edges.

Within two inches of deck foundations (two inches measured from outermost portion of foundation, for example, foundation brackets on anchor windlass).

Waterways.

NOTES

1. Surface preparation may be accomplished by water jetting, abrasive blasting, or a combination of the two.

2. Water jetting only reveals an existing substrate anchor profile and does not create a new profile. Abrasive may be introduced to the waterjet stream, to achieve required surface profile and/or greater productivity. Abrasive blast grit (if used for preparing the aluminum surfaces) must conform to CID- AA59316, Type I or Type IV.

3. Surfaces being preserved are considered “critical-coated surfaces”.

4. Unless a containment system is used to contain surface preparation dust and debris and coating application overspray during pier side/dockside Preservation, the following must be adhered to:

a. All surface preparation tools/equipment must vacuum-shrouded.

b. Coatings must be applied by brushing or rolling.

3.3.2.4 Non-skid surface appearance and texture. Ensure that the non-skid surface show a pattern of peaks and ridges. The ridge profile must be continuous and reasonably uniform. Peaks and ridges must be generally in the same direction (fore and aft), approximately ½ to 1 inch apart, and approximately 1/16 to 3/32 inches high. All weld seams must be cross-rolled from a minimum of 3 inches on either side of the weld.

3.4 Low temperature cure system. If a Change Request has been authorized and released, the Contractor must apply a low temperature cure system, conforming to MIL-PRF-24667, Type VIII, Composition G.

Ensure that top color coating is a silicone alkyd enamel product, recommended by the nonskid coating system manufacturer, in lieu of the polyurethane-based coating listed on QPL-24667.

NOTES

1. The low temperature system is only authorized for application at temperatures between 35-45 degrees F.

2. Primer, non-skid, and color coatings must be procured as part of a system kit from the system’s manufacturer or supplier.

The Type III non-skid system with the intermediate membrane should only be used over deck surfaces that undergo a great deal of flexing, or over uneven deck surfaces where flatness is required.

3.5 Flexible membrane system. If a Change Request has been authorized and released, the Contractor must apply the MIL-PRF-24667, Type III, Composition G system, with the intermediate membrane.

3.6 In-process quality control measures. The Contractor must abide by all the safety, preservation, and quality control requirements specified in SFLC Std Spec 0000, paragraph 3.2.4.2 (In-process QC measures for “critical-coated surfaces).

4. NOTES

4.1 Definition of coaming. Vertical raised sections of deck plating around an opening that provide a frame and/or deflect water, such as around a hatch or gooseneck.