WALNUT_ventilation_insulation_renewal.doc

S_63500_ESD_0814_SWIT

SYY_NNN_63500_DWM_1214_205

WORK ITEM 2: HVAC ducting Insulation, Renew

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to renew the HVAC ducting insulation on the sections designated in Table 1.

Table 1 - Insulation Renewal

1.2 Government-furnished property.

None.

2. REFERENCES

Coast Guard Drawings

Coast Guard Drawing 225 WLB 512-001, Rev E, HVAC Diagram

Coast Guard Drawing 225 WLB 512 009, Rev E, HVAC A & D, FR 57-75, Main Deck & 01 LVL Hull Block 960 Coast Guard Drawing 225 WLB 509 001, Rev -, Duct Trunk & Machinery Insulation Details Coast Guard Publications

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2012, General Requirements 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(s):

None.

3.1.2 Tech Rep.

Not applicable.

3.1.3 Protective measures - general. The Contractor shall furnish and install all protective coverings to seal off and protect all non-affected vessel's components, equipment, and spaces in the vicinity of 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). Be aware that interferences in way of work include, but are not limited to the below listed:

· Overhead sheathing/panels

· Ducting screens.

· Electric pre-heater

· Ventilation covers.

· Galley counter tops.

· Galley equipment.

3.2 Renewal. The Contractor shall renew all insulation identified in Table 1 and refer to the relevant Coast Guard Drawing(s) as guidance.

3.2.1 Removal. The Contractor shall remove all existing insulation material.

3.2.2 Disposal. The Contractor shall dispose of all removed materials in accordance with all applicable Federal, state, and local regulations.

3.2.3 Surface preparation. The Contractor shall clean all exposed duct work surfaces, including adjacent structural members, to remove all visible surface contaminants.

3.2.4 Substrate inspection - visual inspection. Upon completion of surface preparation the Contractor shall visually inspect the prepared surfaces; submit a CFR.

3.2.5 Insulation installation. The Contractor shall install new insulation, lagging, and vapor seal over the ducting surfaces identified in Table 1 and shown in the relevant Coast Guard Drawing, in accordance with Coast Guard Drawing 225 WLB 509 001.

4. NOTES

This section is not applicable to this work item.