SOW USCGC NORVELL Machinery Ventilation System...Clean.pdf

USCGC MARGARET NORVELL (WPC-154) DOCKSIDE AVAILABILITY FY2023

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51000_JLW_0121_154WPC

WORK ITEM 5: Machinery Ventilation System, Clean

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to clean the interior of the following ventilation system components and ducts.

TABLE 1 –MACHINERY VENTILATION DUCTS TO BE CLEANED

DUCT

Main Engine Room Supply Main Engine Room Exhaust Generator Room Supply Generator Room Exhaust PORT Steering Gear Room Supply PORT Steering Gear Room Exhaust STBD Steering Gear Room Supply STBD Steering Gear Room Exhaust FWD Auxiliary Machinery Room Supply FWD Auxiliary Machinery Room Exhaust EDG Room Supply

TABLE 2 – REPAIRS (PARA 3.4.2)

CSMP #

FOR INTERNAL

USE ONLY

PRE-EXISTING DISCREPANCIES AND REQUIRED REPAIRS

2021-005 DISCREPANCY: Both Generator Room Supply fans motors are making a squealing (high pitch) noise.

ACTION(S): Renew both generator room supply fans and motors.

1.2 Government-furnished property.

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED

COST

($/UNIT)

N Fan Circulating NIIN: 016414267 2 3,169.75 N Motor Alternating Current NIIN: 016111220 2 1,370.00

*Government-loaned property, which must be returned to the vessel upon completion of the availability.

**New or refurbished equipment that the Government may provide for installation in place of existing equipment.

***Government-furnished property, which is to be supplied by either the vessel or the C4IT Service Center.

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2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 154 WPC 513-201, Rev B, Machinery Ventilation Arrangement Coast Guard Drawing 154 WPC 513-301, Rev C, Machinery Ventilation Diagram

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2020, General Requirements Surface Forces Logistics Center Standard Specification 5100 (SFLC Std Spec 5100), 2020, Clean

Shipboard Ventilation Systems Coast Guard Technical Publication (TP) 8123, SEP 2019, Preliminary - Heating, Ventilation, and

Air Conditioning System - Frc-514-P1

OTHER REFERENCES

None

3. REQUIREMENTS

3.1 General.

3.1.1 CIR.

None.

3.1.2 Tech Rep.

None.

NOTE

The Contractor is reminded to comply with ALL requirements invoked by this work item, such as SFLC Std Spec 0000 and SFLC Std Spec 5100 (e.g.

mark and restore damper positions; remove all intake and exhaust screens, clean vent systems in their entirety from the point where the air enters the system to the point where the air is discharged from the system; restore, renew, or repair all articles or component removed or disturbed to their original condition if damaged or modified during contract work, etc).

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).

3.2 Operational test, initial. Prior to commencement of work, the Contractor must witness Coast Guard Personnel perform an initial operational test of the ventilation systems included in this work item, to demonstrate the existing operational condition. Document all modifications to the system (e.g. new holes

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in existing duct, etc.) that will be required to perform the cleaning work, do not perform modifications without Coast Guard authorization. Submit a CFR.

NOTE

Please be aware that this work item does not describe cleaning work for MDE and SSDG combustion air intake ducting (the large vertical trunks on main deck and the 01 deck whose inlets face aft). DO NOT perform any work on those ducts via this work item.

This work item only requires work to be performed on vent ducting that is connected directly to machinery space “compartments”.

3.3 Cleaning requirements. The Contractor must clean and inspect the interior surfaces of ventilation system ducting runs and components listed in the Table 1 - MACHINERY VENTILATION DUCTS TO BE CLEANED, above. Use Coast Guard drawings and (TP) 8123 listed in Section 2 as reference.

Comply with all requirements in SFLC Std Spec 5100. Submit a CFR.

3.3.1 Repairs. Perform the repairs to the HVAC System specified in Table 2 above.

3.3.2 Duct Interior Images for Final Report. After gaining access to duct interiors, take a digital photo of each duct interior surfaces at the opening created to show the condition of the duct work prior to cleaning.

Then prior to closing the duct work accesses take a final image of the same area post-cleaning. Add these images to the final report submitted in paragraph 3.4 titled “Operational test, post repairs”.

3.3.3 Notification. The Contractor must give written notification to the COR, 48 hours before starting ventilation cleaning work.

NOTE

Coast Guard personnel will operate all shipboard machinery and equipment.

3.4 Operational test, post repairs. After completion of work, the Contractor must thoroughly test, in the presence of the Coast Guard Inspector and demonstrate the ventilation systems included in this work item to be in satisfactory operating condition. Submit a CFR.

4. NOTES

This section is not applicable to this work item.