REVISED 1P45A19 WK ITEM 1 Prop Port SB Renew In Water.doc

WTM_154WPB_MAR2021

WORK ITEM 1: Propeller, Port, Starboard, Renew, In Water

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to remove and install a new propeller on the port and starboard shaft, in water and to conduct a dock and sea trail after installation.

1.2 Government-furnished property.

($/UNIT)

PN: 531914

PN: 531915

P/N: 950700

(see note 4.3 for kit contents)

NSN: 2010-01-632-2198

P/N: 999120

P/N: 950733

P/N: Z0020202H3n/a

P/N: 1081226

P/N: 1010059

P/N: GA-4

P/N: 90715A145

P/N: 950756

P/N: 93190A634

P/N: 90585A626

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

2. REFERENCES

Coast Guard Drawings

Coast Guard Drawing 154 WPC 204-301, Rev A, Equipment Removal Plan Coast Guard Drawing 154 WPC 243-201, Rev -, Main Propulsion Shafting A&D Coast Guard Drawing 154 WPC 243-202, Rev A, Shaft Locking Device Coast Guard Drawing 154 WPC 245-304, Rev -, Propeller Plans and Data Six Blade Propeller Coast Guard Drawing 154 WPC 245-303, Rev -, Propeller Plug Gauge and Shaft Ring Gauge Details for Propeller Shaft Coast Guard Publications

Coast Guard Technical Publication (TP) 8913, Sep 2014, Technical Repair Standard For Propellers 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).

3.2 Stbd propeller removal. The Contractor shall accomplish the below specified tasks for the starboard propeller, using Coast Guard Drawings 154 WPC 204-301, 154 WPC 243-201, 154 WPC 243-202, 154 WPC 245-303 and 154 WPC 245-304 as guidance.

3.2.1 Port propeller removal. The Contractor shall accomplish the below specified tasks for the Port propeller, using Coast Guard Drawings 154 WPC 204-301, 154 WPC 243-201, 154 WPC 243-202, 154 WPC 245-303 and 154 WPC 245-304 as guidance.

3.2.2 The Contractor shall refer to Coast Guard Drawing 154 WPC 245-304, sheet 8 and TP-8913 chapters 2 and 3, for applicable propeller removal procedures using Government furnished equipment.

NOTE

While applying pressure with the hand pumps to release the propeller; the Contractor may have to go a little higher than expected pressure especially if the water is cold, basically apply pressure until the propeller pops down the shaft. Leave some threads on the nut so the prop doesn't come completely off.

3.2.3 The Contractor shall secure the propeller, maintaining positive control at all time, to prevent the propeller from falling to the bottom.

3.2.4 After removing the GFE propeller from its shipping crate, the Contractor shall inspect the GFE propeller’s shipping crate for re-use and submit a CFR. Safely package and secure the MTI propeller to the shipping crate to avoid any further damage during shipping, and turn over the removed propeller to the Coast Guard PA as an MTI item.

3.3 Stbd propeller installation. The Contractor shall install the starboard GFE propeller using Coast Guard Drawings 154 WPC 204-301, 154 WPC 243-201, 154 WPC 243-202, 154 WPC 245-303 and 154 WPC 245-304 as guidance.

3.3.1 Port propeller installation. The Contractor shall install the Port GFE propeller using Coast Guard Drawings 154 WPC 204-301, 154 WPC 243-201, 154 WPC 243-202, 154 WPC 245-303 and 154 WPC 245-304 as guidance.

3.3.2 The Contractor shall refer to Coast Guard Drawing 154 WPC 245-304, sheet 8 and TP-8913 chapter 7 , for applicable propeller installation procedures using Government furnished equipment.

3.4 Propeller zinc plate renewal. The Contractor shall renew both the port and starboard propeller zinc plates (Item 3) and the four associated mounting bolts (item 8) as shown in Coast Guard Drawing 154 WPC 245-304, using TP 8913 chapter 3, as reference.

3.5 Underwater Zinc Anode Replace. The Contractor shall renew the underwater body hull zincs IAW Maintence Procedure Card B10018.D.

3.6 Dock trials. The Contractor shall conduct dock trials to demonstrate the material readiness of the ship for sea trials. Additionally, all onboard tests conducted after installation and prior to sea trials to prove proper installation and satisfactory operation of equipment shall be conducted. Ensure that the dock trials are begun no later than 12 hours prior to the scheduled sea trials.

3.6.1 During dock trials, Contractor personnel shall observe tests under their cognizance and make such adjustments and repairs that are in scope, as required.

3.7 Sea trials. As soon as possible after completion of the dock trials, the Contractor shall coordinate performance of the seal trials to prove all repairs.

3.7.1 The Contractor shall have representatives on board the cutter to observe the trials for the purpose of observing whether or not the repairs are satisfactory.

3.7.2 The sea trials shall be carried out in free route, away from other shipping, as designated by the COR.

3.8 Post-trial examination. After the completion of the sea trial, the Contractor shall perform a careful and thorough examination of parts of the repaired machinery, as designated by the COR. If any part of the ship or its equipment fails to meet contractual requirements during trials, perform additional trials after corrective measures have been taken.

NOTES

1. Examples of dock trials include conducting cold (pre-lightoff) and hot checks, cycling machinery (rudders, BPU, turning gear, fin stabilizers), and conducting any post-docking shaft alignment verification checks. This time may also be used to on-load fuel, if needed for operations.

2. The conditions of the trials will be determined largely by the character of the work that has been performed in each case, and as designated by the COR. A full power trial should be run at this time unless the COR elects to defer this run until all new machinery parts are properly run-in or the training status of the crew permits full power operation without undue hazard.

3. This examination may be conducted by the Engineer Officer of the ship, in which case he shall report the results of the examination to the COR, fully describing any defects or improper conditions found.

4. Representatives of manufacturers who have furnished ship components may be invited to witness trials subject to approval of the CO or OINC of the ship.

4. NOTES

4.1 Equipment operation. Coast Guard personnel will operate all shipboard machinery and equipment during all tests.

4.2 Contents of Government Furnished “Kit, Installation Part-Replacement” See Coast Guard Drawing 154WPC 245-304.

4.3 Contents of Government Furnished “Kit, Propeller – Removal/Installation Tools and Equipment”

INST. ROD ] HYD. INST. NUT(5/8 DIA X 9