21-1457 SOW-3HB241 A.pdf

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to renew the Interior Hull

Insulation listed in Table 1.

TABLE 1- HULL INSULATION LOCATION

DESCRIPTION LOCATION APPROXIMATE SQFT TO

BE REPLACED

Bulkhead and Overhead Machinery Space(Engine Room)

Including Demisters

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 45 RB-M 635-002, Rev C, Insulation Details

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2018, General Requirements

OTHER REFERENCES

None

3. REQUIREMENTS

3.1 General.

3.1.1 CIR.

None.

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.

3.1.4 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:

Sheathing

Bulkhead insulation

Piping

Electrical wiring

CAUTION

The insulation currently installed in the 45 RB-M engine room and engine room ventilation supply ducts are made up of two layers of fiberglass with a thin layer of lead sheathing in the middle. Lead is a recognized health hazard.

Lead may adversely affect the peripheral and central nervous systems, as well as the red blood cells, kidneys, reproductive and endocrine systems.

3.2 Removal. The Contractor shall remove the interior insulation and associated fastening hardware listed in Table 1. Refer to Coast Guard Drawing 45 RB-M 635-002 and SFLC Std Spec 0000 for guidance.

3.2.1 Disposal. The Contractor shall dispose of all removed materials, in accordance with all applicable

Federal, state, and local regulations.

3.3 Substrate inspection - visual inspection. Upon removal of existing insulation, the Contractor shall visually inspect the exposed surfaces for corrosion, pitting and any other visible defects. Submit a CFR.

3.4 Installation. The Contractor shall install the new insulation in accordance with Coast Guard Drawing

45 RB-M 635-002 and SFLC Std Spec 0000.

NOTE

Lead sheet is no longer authorized for installation.

3.4.1 Engine Room Specific Insulation. The Contractor shall renew the engine room insulation as follows:

3.4.1.2 The Contractor shall provide all installation material and fasteners:

Sound attenuation barrier: Pyrotek "Quadzero", P/N 17763007

Hullboard: Owens Corning 2 inch Foil -Faced "Insul-Quick" insulation.

3.4.1.3 The Contractor shall replace up to 20 percent of the welded studs and caps.

3.4.1.3.1 The Contractor shall weld all insulation mounting studs.

3.4.1.4 The Contractor shall install the insulation as follows starting at the bulkhead/hull in the following sequence.

Quadzero

Insulation Speed Washer

2 inch Insul-Quick Hullboard

Insulation Speed Washer

Trim Pin (as required)

Insulation Cap

Tape all boundaries

4. NOTES

This section is not applicable to this work item.