0907_A_Propeller Shaft Wear Down Readings.doc

USNS SIOUX

(T-ATF 171)

DRYDOCKING AND UNDOCKING

RFP NO. N40442-10-R-XXXX

27July 2010

ITEM NO. 907

Category “A” MSFSC/Collins/FB

PROPELLER SHAFT WEAR DOWN READINGS

1.0 ABSTRACT

1.1 This item describes the requirements for the contractor to immediately, upon dry-docking the vessel, take propeller shaft wear down readings.

2.0 REFERENCES: None

3.0 ITEM LOCATION/DESCRIPTION

3.1 Location/Quantity

3.1.1. Location: Ship's Stern

3.1.2. Quantity: Two (2) Propeller Shafts, Port and Starboard

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICES/INFO: None

5.0 NOTES

5.1 The contractor and all subcontractors, regardless of tier must consult the General Technical Requirements (GTR) to determine applicability to this work item. In performance of this work item, the contractor and all subcontractors must comply with all applicable GTR including but not limited to GTR 1 through 7.

5.2 The contractor and all subcontractors regardless of tier are advised to review other work items under this contract to determine their effect on the work required under this work item. Many of the definitions relating to performance are found in Work Item 001.

5.3 All dirt, debris and liquids resulting from this work shall be removed from the ship daily and all areas involved left clean.

6.0 QUALITY ASSURANCE REQUIREMENTS: Refer to Article 7.0

7.0 STATEMENT OF WORK

7.1 Arrangement/Outfitting

7.1.1. Immediately after dock is dry, rig staging as required, remove all marine growth and extraneous substances from stern glands and shafts, and thoroughly clean this area. Take measurement of strut bearing wear down readings.

7.1.2. Drain off and contain oil from plug in strut bearing inspection spaces on both strut tube bearings. After all readings are taken, refill plug space with appropriate lubricating oil.

7.1.3. In the presence of the MSC and Regulatory Body Representatives: Take the wear down readings with the depth gauge provided by the Chief Engineer. Take readings three (3) times and submit readings to the MSC Representative within the first 24 hours of the drydocking period. Upon completion of taking readings return depth Gauges to the Chief Engineer. After taking wear down readings remove the staging.

7.1.4. Submit to the MSC Representative four (4) copies of a typewritten report denoting "as found" and "as released" bearing clearances.

7.2 Inspection/Test:

7.2.1. In the presence of MSCREP and Regulatory Body Representatives, record propeller shaft wear down readings. Notify the MSC Representative in accordance with Item 019.

7.3 Painting:

7.3.1. Paint fairwaters and guards in accordance with Work Item 902, Titled "Under Water Hull Preservation."

7.4 Preparation of Drawings/Documentation: None

7.5 Manufacturer's Representative: None

8.0 GENERAL REQUIREMENTS: None additional

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