CGC HERON_Engineering Deck Preservation_SOW.pdf

USCGC HERON (WPB-87) DOCKSIDE AVAILABILITY FY2021

84 (Rev-1)

S19_002_16701_FJL_0919_87344

WORK ITEM 15: Engineering Deck Surface(s), Preserve

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to preserve approximately 470 square feet of engine room bilge surfaces and approximately 200 square feet of fan space surfaces as designated in Tables 1 and 2.

TABLE 1: PRESERVATION LOCATIONS

COMP.

NUMBER

COMP.

NAME

DESCRIPTION SFLC STD SPECIFICATION 6310

APPENDIX COATING SYSTEM OPTION

1-15-1-Q Fan Space

(STBD)

Deck surface (up to Deta couple), Approx. 100 square feet B Metal Interior and Non-Skid

Areas, Metal Decks – No application of deck coverings

N/A

1-15-2-Q Fan Space

(PORT)

Deck surface (up to Deta couple), Approx. 100 square feet

B Metal Interior and Non-Skid Areas, Metal Decks – No application of deck coverings

N/A

2-14-0-E Engine Room**

Approx. 400 square feet, SSPC- SP2 Surface prep for bilge areas not specified in Table 2 below.

B Bilges, Cofferdams, and Forepeaks, Steel

II or III

** Refer to Table 2 below for specific areas of bilge requiring SSPC-SP11 surface prep.

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 87 WPB 111-001, Rev H, Shell Expansion Coast Guard Drawing 87 WPB 116-001, Rev -, Longitudinal Girders & BHD’s Coast Guard Drawing 87 WPB 117-001, Rev G, Transverse Sections Coast Guard Drawing 87 WPB 122-001, Rev C, Watertight Bulkheads Coast Guard Drawing 87 WPB 131-001, Rev J, Deck Construction Plan Coast Guard Drawing 87 WPB 131-002, Rev -, Forepeak Void New Watertight Flat Coast Guard Drawing 87 WPB 151-001, Rev L, Superstructure Details Coast Guard Drawing 87 WPB 622-001, Rev E, Floor Plates and Gratings

85 (Rev-1)

COAST GUARD PUBLICATIONS

Coast Guard Commandant Instruction (COMDTINST) M10360.3 (series), Coatings and Color

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

OTHER REFERENCES

None.

3. REQUIREMENTS

3.1 General.

3.1.1 CIR. The Contractor shall submit a CIR for the inspections listed in the following paragraph:

3.2 Substrate inspection.

3.1.2 Tech Rep.

Not applicable.

3.1.3 Protective measures. The Contractor shall furnish and install all protective coverings to seal off and protect all non-affected vessel's components, equipment, and spaces near the work area against contamination during the performance of work. Upon completion of work, the Contractor shall remove all installed protective measures, inspect for the presence of contamination, and return all contaminated equipment, components, and spaces to original condition of cleanliness.

3.1.3.1 Protective measures, hydraulic system(s). Maintain existing hydraulic system cleanliness and take all necessary precautions to prevent the introduction of contaminants into the hydraulic system.

Immediately after disconnecting or removing components from the hydraulic system, seal all openings to the rest of the system using caps for externally threaded connection points, bolt-on blanks, or taped-on discs/covers made of durable plastic or sheet-metal that is no less than 1/16-inch thick.

NOTE

Be aware that plastic bags may be used only when arrangement or configuration prevents the use of the other sealing methods specified above.

3.1.4 Interferences. The Contractor shall 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 plates, framing and hardware.

Piping.

Strainers.

Electrical wiring.

Bilge alarm float switch.

86 (Rev-1)

3.1.5 Operational test, initial. Prior to commencement of work, the Contractor shall witness Coast Guard personnel perform an initial operational test of all items or shipboard devices to be disturbed, used, repaired, or altered, to demonstrate existing operational condition. Submit a CFR.

NOTE

Coast Guard personnel will operate all shipboard machinery and equipment.

3.2 Substrate inspection. After completion of surface preparation and before primer coat application, the Contractor shall perform a visual inspection of all prepared surfaces. Submit a CIR.

3.3 Surface preservation. Using Coast Guard Drawings listed in Section 2 as guidance, the Contractor shall prepare and preserve areas designated in Table 1 above, in accordance SFLC Std Spec 6310.

3.3.1 Exact locations within areas in Table 1 will be designated by Coast Guard Inspector.

TABLE 2: SSPC-SP11 SURFACE PREPARATION AREAS, APPROX 70 SQFT

COMP.

NUMBER

COMP.

NAME

DESCRIPTION

2-14-0-E Engine Room 3ft x 4ft (12 sq. ft) spot under both MDE strainers.

2-14-0-E Engine Room 3ft x 3ft (9 sq. ft) spot under AC unit.

2-14-0-E Engine Room 2ft x 3ft (6 sq. ft) under port shaft seal.

2-14-0-E Engine Room 2ft x 3ft (6 sq. ft) under stbd shaft seal.

2-14-0-E Engine Room 1ft x 6ft (6 sq. ft) outboard #1

SSDG.

2-14-0-E Engine Room 1ft x 6ft (6 sq. ft) outboard #2

SSDG.

2-14-0-E Engine Room 4ft x 3ft (12 sq. ft) aft of stbd shaft seal inspection port.

2-14-0-E Engine Room 4ft x 3ft (12 sq. ft) aft of port shaft seal inspection port.

3.3.2 Coating colors and system color schemes. Match colors to existing adjacent areas.

NOTE

Application of the preservation systems specified herein may require the use of plural-component spray equipment, or other suitable methods, to compensate for the coating system’s relatively short pot life.

3.4. Operational test, post repairs. After completion of work, the Contractor shall thoroughly test, in the presence of the Coast Guard Inspector and demonstrate all items or shipboard devices that have been disturbed, used, repaired, altered, or installed to be in satisfactory operating condition. Submit a CFR.

NOTE

Coast Guard personnel will operate all shipboard machinery and equipment.