Work Item 1 PIPING INSULATION.pdf

SPECIFICATION FOR WMEC INSULATION

1 (Rev-1)

WORK ITEM 1: Piping Insulation, Renew

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to renew piping insulation in designated location(s) aboard US Coast Guard Cutter DILIGENCE. Insulation to be renewed is for system indicated below and in designated location(s), as designated on Table 1 in the SOW.

SHIP SYSTEM PIPING APPLICATION TEMP. RANGE (F) *

Potable Water (chill water) 35 – 90 F

* Temp. Range is typical system fluid temperature range.

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Applicable Coast Guard Drawings will be provided to the Contractor upon request for the specific repairs to be completed.

COAST GUARD PUBLICATIONS

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

ASTM International (ASTM) F683, 2014, Standard Practice for Selection and Application of

Thermal Insulation for Piping and Machinery MIL-PRF-32514, June 2021, Insulation, Anti-Sweat, Refrigerant, Thermal Foam MIL-DTL-32585, July 2021, Insulation, Thermal and Acoustic, Fiberglass

2 (Rev-1)

SPECIFICATION FOR WMEC INSULATION REPAIRS NAVSEA

Drawing 804-5959214, Rev-, Piping Insulation - Installation Details

3. REQUIREMENTS

3.1 General.

3.1.1 CIR.

None.

3.1.2 Tech Rep.

Not applicable.

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).

3.1.4 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:

• Overhead panels.

• Wireways.

• Bulkheads.

• Machinery.

3.2 Renewal. The Contractor must renew piping insulation designated by table 1 and use provided Coast Guard Drawing(s) as guidance.

NOTE

Although pipe lengths, routes, and sizes are detailed in the specified drawings, the as-built configuration may vary slightly in routes, lengths, and sizes.

3.2.1 Removal. Remove all existing insulation material over the designated pipe surfaces, including associated pipe hangers, valves, fittings, and flanges. Dispose of all removed materials in accordance with all applicable Federal, state, and local regulations.

NOTE – FOR CHILL WATER PIPING:

Other surfaces/fittings affected include: brackets, bulkhead penetrations, flat work, and all other protrusions or fixtures that will condense due to relative humidity from surrounding atmosphere.

3.2.2 Surface preparation. Clean all exposed pipe and pipe component surfaces, with a soft bristle brush and a mild detergent solution, to remove all visible surface contaminants.

3.2.3 Insulation types used. Insulation material type(s) will be designated by the Coast Guard from “Table 2 – Insulation Materials” below according to the ship system(s)

3 (Rev-1)

SPECIFICATION FOR WMEC INSULATION REPAIRS

TABLE 2 – INSULATION MATERIALS

INSULATION DESCRIPTION MATL. SPECIFICATION**

Pre-formed Anti-Sweat Elastomeric Foam (Non-Halogen Only)

MIL-PRF-32514,

ASTM C534

* Temp. Range is typical system fluid temperature range.

**See Paragraph 4.2 for list of superceded material specifications

3.2.4 New insulation installation. Install new insulation and lagging materials and thicknesses for the application and temperature ranges as specified in ASTM F683-14 Tables S1.1, S1.2, S1.4, and S1.5 subject to the restrictions in paragraph 3.2.3. Install new insulation on the exposed pipe surfaces, including associated pipe hangers, valves, fittings, and flanges, in accordance with details in NAVSEA Drawing 804-5959214.

NOTES

1. In order to minimize the occurrence of condensation and mold, the Contractor is encouraged to maximize use of insulation thickness designated for “Non-air conditioned spaces” as much as practicable.

2. Glass cloth lagging is required only in high traffic areas where insulation is subject to damage.

3.2.5 Preservation. The Contractor must paint the newly installed insulation system, in accordance with SFLC Std Spec 6310, using the system specified for “Insulation Surfaces, Fiberglass Sheet/Closed Cell PVC Foam” in Appendix B (Cutter and Boat Interior Paint Systems).

NOTE

Coast Guard personnel will operate all shipboard machinery and equipment.

3.3 Operational test, post repairs. After completion of work, the Contractor must 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.

4. NOTES

4.1 Reference version. While ASTM F683 was revised in 2021, ASTM F683-14 is referenced in this work item to define materials and installation for piping and machinery insulation. This aligns with current Coast Guard technical standards, which require continued use of the Supplemental Appendix for Ships of the US Navy found at the end of ASTM F683-14.

4.2 Superceded specifications. A number of material specifications listed in ASTM F683-14 have been updated and/or superseded. These are listed below in Table 4-1 with the original specifications, current specification, and material.

SPECIFICATION FOR WMEC INSULATION REPAIRS FY2023

4 (Rev-1)

TABLE 4-1 SUPERCEDED MATERIAL SPECIFICATIONS

ORIGINAL STANDARD CURRENT SPECIFICATION MATERIAL

EB 4013 MIL-PRF-32514 Elastomeric Foam Rubber

MIL-I-2781 MIL-DTL-2781 Calcium Silicate DOD-I-24688 MIL-DTL-24688 Polyimide Foam MIL-I-16411 MIL-DTL-32585 Fibrous Glass

MIL-PRF-22344 MIL-DTL-32585 Fibrous Glass MIL-I-22023 MIL-DTL-32585 Fibrous Glass