CGC GREENBRIER FY10 DD SPEC.pdf

USCGC GREENBRIER (WLR 75501)

75 FOOT "F CLASS" RIVER BUOY TENDER

USCG 130 BARGE (13075)

SPECIFICATION FOR DRYDOCK REPAIRS

Developed By: CWO4 Bryan Wright

(REV-1, 10 JUN 2010)

USCGC GREENBRIER (WLR-75F) DRYDOCK AVAILABILITY 2010

ii (Rev-1)

TABLE OF CONTENTS

Revisions Record ....................................................................................................................................... iii Consolidated List of References ................................................................................................................ iv Consolidated List of Government-furnished Property ............................................................................. viii Consolidated List of Critical Inspection Items .......................................................................................... ix Principal Characteristics - Tender ............................................................................................................... x Principal Characteristics - Barge General Requirements WORK ITEM 1: Hull Plating (U/W Body), Ultrasonic Testing - Tender WORK ITEM 2: Hull Plating (U/W Body), Ultrasonic Testing - Barge WORK ITEM 3: Propulsion Shafting ; Remove, Inspect, and Reinstall WORK ITEM 4: Propulsion Shaft ing , Straighten WORK ITEM 5: Propeller Shaft Sleeve(s), Renew WORK ITEM 6: Propulsion Shaft Bearings (External), Renew WORK ITEM 7: Propellers, Remove, Inspect, and Reinstall WORK ITEM 8: Propeller, Perform Minor Repairs and Reconditioning WORK ITEM 9: Keel Coolers, Clean , Inspect and Hydro WORK ITEM 10: Keel Coolers, Clean, Inspect and Hydro WORK ITEM 11: Vent Ducts (Engine and Motor Room All), Commercial Cleaning WORK ITEM 12: Vent Ducts (Galley and Pantry Room All), Commercial Cleaning WORK ITEM 13: Fuel Valves, Renew WORK ITEM 14: Rudder Assembly, Remove, Inspect and Reinstall WORK ITEM 15: Rudder Stock Housing (Lower) , Renew WORK ITEM 16: Rudder Stock, Rebuild WORK ITEM 17: Spud Wells, Preserve - Tender WORK ITEM 18: Spud Wells, Preserve - Barge WORK ITEM 19: Deck Fittings, Inspect - Tender WORK ITEM 20: Decks - Exterior(Barge Buoy), Preserve WORK ITEM 21: U/W Body, Preserve (“100%”) - Tender WORK ITEM 22: U/W Body, Preserve ( “100%” ) - Barge WORK ITEM 23: Hull Plating Freeboard, Preserve (“ 100% ”) - Tender WORK ITEM 24: Hull Plating Freeboard, Preserve (“ 100% ”) - Barge WORK ITEM 25: Drydocking - Tender WORK ITEM 26: Drydocking - Barge WORK ITEM 27: Temporary Services, Provide WORK ITEM 28: Hull and Structural Plating – Barge Side Shell, Modify WORK ITEM 29: Firemain Valve WORK ITEM 30: Bilge and Ballast Valves, Renew - Barge WORK ITEM 31: Boat Davit Winch(s), Shrink Wrap WORK ITEM 32: Buoy and Cargo Handling Crane, Shrink Wrap WORK ITEM 33: Renew False Bulkhead U-Channel

Revisions Record This page is used to record specification revisions, which may have occurred subsequent to a Revision 0 (Rev-0) package. Information listed is intended to provide contractors and field unit personnel a means to ensure all the current specification revision pages are present when reviewing or utilizing this specification package.

DATE REV# WORK

ITEM#

CHANGES MADE

NOTE : All work item and paragraph numbers listed above for a given revision correspond to same numbers in the previous revision. This revised specification is self-contained with all of the above listed changes incorporated.

iii (Rev-1)

Consolidated List of References

The below-listed documents form a part of this specification to the extent specified herein. Approval/publication dates or revision dates/numbers are also identified, to ensure that same document versions are used at time of specification writing and during contract execution.

All Coast Guard drawings, technical publications, and standard specifications will be provided to contractors by the Coast Guard at an appropriate time, or upon request, free or charge. Other Government documents may be accessed – free of charge – as follows:

• MIL/DOD/CID Specifications: http://www.assistdocs.com/search/search_basic.cfm

• Commandant Instruction Manuals: http://www.uscg.mil/directives/default.asp

• Public Laws, Code of Federal Regulations, U.S Codes, and other Federal Government laws::

www.gpoaccess.gov

The Government is aware of the following internet web links where contractors may procure commercial specifications:

• American Welding Society (AWS): http://www.awspubs.com/index.php

• ANSI, ASTM, IEEEE, NFPA, ASME, SAE Standards: http://www.techstreet.com/

• NFPA: http://www.nfpa.org

• SSPC Standards and pictorial guides: http://shopping.netsuite.com/sspcmarketplace

COAST GUARD DRAWINGS

Coast Guard Drawing 101 WTGB 801-006, Rev K, Outboard Profile Coast Guard Drawing 75F-WLR-261-1, Rev -, Fuel Oil Service Details Coast Guard Drawing 130 CGB 111-002, Rev 9, Hull Details, Side Shell Plating and Framing Coast Guard Drawing 130 CGB 530-002, Rev 3, Cooling Water Piping Schematic Coast Guard Drawing 130 CGB 71-77 085-001, Rev B, General Arrangements and Profile Coast Guard Drawing 130 CGB71-77 085-006, Rev -, Curves of Form Coast Guard Drawing 130 CGB71-77 111-001, Rev -, Hull Details, Bottom and Main Deck Plating and Framing Details Coast Guard Drawing 130 CGB71-77 111-002, Rev -, Hull Details, Side Shell Plating and Framing Details Coast Guard Drawing 130 CGB71-77 111-003, Rev -, Side Shell Plating Modifications Coast Guard Drawing 130 CGB71-77-085-004, Rev 1, Docking Plan Coast Guard Drawing 130 CGB71-77-123-1, Rev -.Spud Well Bhds & Spud Det Coast Guard Drawing, 130-CGB71-77-530-003, Rev-,Potable and Freshwater Piping Schematic Coast Guard Drawing 225 WLB 601-001, Rev M; General Arrangement Inboard & Outboard Profiles Coast Guard Drawing 75F WLR 070-001, Rev 2, Booklet Of Gen Plans (75307) Coast Guard Drawing 75F WLR 070-001, Rev 2, Booklet of General Plans Coast Guard Drawing 75F WLR 070-001, Rev 2, Booklet Of General Plans Coast Guard Drawing 75F WLR 085-012, Rev -, Docking Block Arrangement (‘F’ Class) Coast Guard Drawing 75F WLR 085-012, Rev-, 75FT “F” Class Towboat Docking Block Arrangement Coast Guard Drawing 75F WLR 110-1, Rev 3, Shell Expansion Coast Guard Drawing 75F WLR 113-1, Rev-, Inner Bottom Coast Guard Drawing 75FWLR 116-1, Rev -, Longitudinal Stringers and Framimng Coast Guard Drawing 75F WLR 243-001, Rev 3, Shafting Arrangement iv (Rev-1) http://www.assistdocs.com/search/search_basic.cfm http://www.uscg.mil/directives/default.asp http://www.gpoaccess.gov/ http://www.awspubs.com/index.php http://www.techstreet.com/ http://www.nfpa.org/ http://shopping.netsuite.com/sspcmarketplace

Coast Guard Drawing 75F WLR 243-002, Rev 5, Shaft Details Coast Guard Drawing 75F WLR 243-002, Rev 6, Shaft Details Coast Guard Drawing 75F WLR 245-003, Rev 2, Propeller, Fairwater & Guard (6-blade) Coast Guard Drawing 75F WLR 245-003, Rev 2, Propeller, Fairwaters & Guards (6 Blade) Coast Guard Drawing 75F WLR 513-002, Rev 4, Machinery Space Ventilation Arrangement and Details Coast Guard Drawing 75F WLR 514-003, Rev 5, Duct and Trunk Arrangement Coast Guard Drawing 75F WLR 521-001, Rev 5, Firemain Diagram Coast Guard Drawing 75F WLR 521-002, Rev 10, Firemain System Details Coast Guard Drawing 75F WLR 529-001, Rev3, Bilge System Details Coast Guard Drawing 75F WLR 529-006, Rev 6, Bilge System Diagram Coast Guard Drawing 75F WLR 530-002, Rev 3, Potable Water System Arrangement and Details Coast Guard Drawing 75F WLR 532-002, Rev 3, Engine Cooling Details Coast Guard Drawing 75F WLR 532-003, Rev 1, Keel Cooler Details Coast Guard Drawing 75F WLR 551-002, Rev 7, Compressed Air System Arrangement and Details Coast Guard Drawing 75F WLR 562-001, Rev 1, Rudder Arrangements Coast Guard Drawing 75F WLR 562-003, Rev 4, Steering Rudder Stock Coast Guard Drawing 75F WLR 562-003, Rev 4, Steering Rudders & Stocks Coast Guard Drawing 75F WLR 562-004, Rev 5, Steering Rudder Tiller Coast Guard Drawing 75F WLR 562-005, Rev 6, Flanking Rudder Stock Coast Guard Drawing 75F WLR 562-005, Rev 6, Flanking Rudders & Stocks Coast Guard Drawing 75F WLR 562-006, Rev 5, Flanking Rudder Tiller Coast Guard Drawing 75F WLR 582-003, Rev 4, Spud Details Coast Guard Drawing 75F WLR 637-001, Rev 5, Joiner Arrangements and Details Coast Guard Drawing FL 2804-13, Rev G, Visual Id Kit Sched Coast Guard Drawing FL 2804-13, Rev G, Visual ID Kit Sched Coast Guard Drawing FL 2804-15, Rev-, Draft Figs Coast Guard Fleet Drawing FL 2602-10, Rev D, Spud Arrangements and Details Coast Guard Fleet Drawing FL 2804-11, Rev D, Visual Id Numeral & Letter for Ships Coast Guard Fleet Drawing FL 2804-11, Rev D, Visual ID Numeral & Letter for Ships Coast Guard Fleet Drawing FL 2804-12, Rev-, U.S.C.G. Emblem Note to A-Team: Insert applicable Coast Guard Drawing Reference

COAST GUARD PUBLICATIONS

Coast Guard Commandant Instruction (COMDTINST) M10360.3C, Change 1, Jun 2006, Coatings and Color Manual Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), Jan 2009, General Requirements Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), Jan 2009, Welding and Allied Processes Surface Forces Logistics Center Standard Specification 0740 (SFLC STD SPEC 0740), Jan 2009, Welding and Allied Processes Surface Forces Logistics Center Standard Specification 5000 (SFLC Std Spec 5000), Jan 2009, Auxiliary Machine Systems Surface Forces Logistics Center Standard Specification 5100 (SFLC Std Spec 5100), Jan 2009, Clean Shipboard Ventilation Systems Surface Forces Logistics Center Standard Specification 8634 (SFLC Std Spec 8634), Jan 2009, Drydocking Surface Forces Logistics Center Standard Specification 8635 (SFLC Std Spec 8635), Jan 2009, Provide Temporary Services v (Rev-1)

OTHER REFERENCES

American Bureau of Shipping (ABS) 2, Rule Requirements for Survey After Construction, 2007, Part 7, Appendix Section 10, Guide for Bronze and Stainless Steel Propeller Castings American Society for Testing and Materials (ASTM), A131, 2001, Standard Specification for Structural Steel for Ships American Society of Mechanical Engineers (ASME) B16.34, 2004, Valves-Flanged, Threaded, and Welding End ASTM International (ASTM) D 4138, 2007, Standard Practices for Measurement of Dry Film Thickness of Protective Coating Systems by Destructive, Cross-Sectioning Means ASTM International (ASTM) D1709, 2008, Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method ASTM International (ASTM) D1922, 2008, Standard Test Method for Propagation Tear Resistance of Plastic Film and Thin Sheeting by the Pendulum Method ASTM International (ASTM) D3951, Reapproved 2004, Standard Practice for Commercial Packaging ASTM International (ASTM) D5363, 2008; Standard Specification for Anaerobic Single-Component Adhesives (An) ASTM International (ASTM) D882, 2009, Standard Test Method for Tensile Properties of Thin Plastic Sheeting ASTM International (ASTM) F992, 2006, Standard Specification for Valve Label Plates Code of Federal Regulations (CFR) Title 33 CFR, 2008, Navigation and Navigable Waters Code of Federal Regulations (CFR) Title 40, Chapter I, 2008, Environmental Protection Agency Code of Federal Regulations (CFR) Title 49, Chapter I, 2008, Pipeline and Hazardous Materials Safety Administration, Department Of Transportation Commercial Item Description (CID) A-A-52624, Nov 2008, Antifreeze, Multi Engine Type, Ethylene Glycol (For Caterpillar applications, use CAT Extended Life Pre-Mix coolant.)

Commercial Item Description (CID) A-A-52624, Nov 2008, Antifreeze, Multi Engine Type, Ethylene Glycol (For Caterpillar equipment applications, use CAT Extended Life Pre-Mix coolant.)

Fernstrum Gridcooler Installation and Maintenance Manual, 2006, Form 165 International Standard For Organization (ISO) 484/2, 1981, Shipbuilding - Ship Screw Propeller - Manufacturing Tolerances - Part 2: Propellers of Diameter Between 0.80 and 2.50 m, Inclusive International Standard For Organization (ISO) 484/2, 1981, Shipbuilding - Ship Screw Propeller - Manufacturing tolerances - Part 2: Propellers of Diameter Between 0.80 and 2.50m, Inclusive Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) SP-61, 2003 Edition, Pressure Testing Of Steel Valves Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) SP-67, 2002 Edition, Butterfly Valves Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) SP-72, 1999 Edition, Ball Valves with Flanged or Butt-Welding Ends for General Service Manufacturers' Standardization Society of the Valve and Fittings Industry (MSS) SP-80, 2008 Edition, Bronze Gate, Globe, Angle and Check Valves MIL-A-22262, Mar 1996; Abrasive Blasting Media Ship Hull Blast Cleaning MIL-A-22262, Mar 1996; Abrasive Blasting Media Ship Hull Blast Cleaning MIL-G-24716, Apr 1993, Gaskets, Metallic-Flexible Graphite, Spiral Wound MIL-PRF-16173, 2006, Corrosive Preventive Compound, Solvent Cutback, Cold Application MIL-PRF-24647, Jun 2006, Paint System, Anticorrosive and Antifouling, Ship Hull MIL-S-45180, 1998; Sealing Compound, Gasket, Hydrocarbon Fluid and Water Resistant MIL-STD-167-1, Nov 2005, Mechanical Vibrations of Shipboard Equipment (Type I - Environmental and Type II - Internally Excited) MIL-STD-2191, Nov 1992, Nov 1992, Repair Welding, Weld Cladding, Straightening, and Cold Rolling of Main Propulsion Shafting NAVSEA Drawing 803-2145807, Rev C, Propulsion Shafting And Components vi (Rev-1)

The Society for Protective Coatings (SSPC) Surface Preparation Specification No. 1 (SSPC-SP 1), 2004, Solvent Cleaning The Society for Protective Coatings (SSPC) Surface Preparation Specification No.11 (SSPC-SP 11), 2004, Power Tool Cleaning to Bare Metal The Society for Protective Coatings (SSPC)/NACE International (NACE) Joint Surface Preparation Standard SSPC-SP 12/NACE No.5, 2007, Surface Preparation and Cleaning of Steel & Other Hard Materials by High and Ultrahigh Pressure Water Jetting The Society for Protective Coatings (SSPC)/NACE International (NACE) Joint Surface Preparation Standard SSPC-SP 7/NACE No.4, 2007, Brush-Off Blast Cleaning The Society for Protective Coatings (SSPC)/NACE-International (NACE) Joint Surface Preparation Standard SSPC-SP 10/NACE No. 2, 2004, Near-White Blast Cleaning The Society for Protective Coatings (SSPC)/NACE-International (NACE) Joint Surface Preparation Standard SSPC-SP 12/NACE No. SSPC-SP 12/NACE No.5, Surface Preparation and Cleaning of Steel & Other Hard Materials by High and Ultrahigh Pressure Water Jetting Prior to Recoating vii (Rev-1) viii (Rev-1)

Consolidated List of Government-furnished Property The following is a list of property, which the Government will furnish. This list supersedes any other material obligations indicated or implied by referenced drawings.

WORK

ITEM

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED

COST

($/UNIT)

25 Y *Transducer Cover

Plate N/A 1 ea. 50.00

26 Y *Transducer Cover Plate

N/A 4 ea. 50.00

*Government-loaned property, which shall 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 ServiceCenter

Consolidated List of Critical Inspection Items The following is a list of work items, which contain Critical Inspection reports, which the Contractor must complete within the first 25% of the availability contract period (see SFLC Std Spec 0000_STD, paragraph

3.2.6.5 (Inspection report particulars)):

Work Item Title 1 Hull Plating (U/W Body), Ultrasonic Testing - Tender 2 Hull Plating (U/W Body), Ultrasonic Testing - Barge 3 Propulsion Shafting ; Remove, Inspect, and Reinstall 9 Keel Coolers , Clean , Inspect and Hydro 10 Keel Coolers , Clean , Inspect and Hydro 15 Rudder Assembly, Remove, Inspect and Reinstall 17 Rudder Stock, Rebuild 32 Renew False Bulkhead U-Channel ix (Rev-1)

PC_75F_WLR_0909

Principal Characteristics - Tender

75’ WLR (F-CLASS), INLAND RIVER BUOY

TENDER

PHYSICAL CHARACTERISTICS

Length Overall 75' 8-5/8" Depth 7' 0" Maximum Beam 24' 0" Height of Highest Projection 47’-2” Full Load Draft 5' 3" Full Load Displacement 172.2 long tons Shore Tie Voltage Requirements 230V/3PH/200AMP Frame Spacing 1' 6"

MACHINERY CHARACTERISTICS

Number of Propellers 2

Number of Blades 6 Diameter of Propeller 46" Pitch 51" fixed

RPM 450

x (Rev-0)

PC_Barge_130_0909

Principal Characteristics - Barge

130' Barge (ALL)

PHYSICAL CHARACTERISTICS

Length Overall 130' 0" Depth 7' 6" Maximum Beam 30' 0" Frame Spacing 12" Full Load Draft 5' 0" Full Load Displacement 402 long tons xi (Rev-1)

(Rev-1)

00000_0110_FLT

REC_0000_FLT_ Commercial Project @ Contractor’ Facility (0110)

General Requirements

1. SCOPE

1.1 Intent. This item describes the general requirements to be followed by the Contractor while conducting this availability.

2. REFERENCES

COAST GUARD DRAWINGS

None.

COAST GUARD PUBLICATIONS

Coast Guard Commandant Instruction (COMDTINST) M10360.3C, Change 1, Jun 2006, Coatings and

Color Manual Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), Jan 2009, General

Requirements Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), Jan 2009, Welding and Allied Processes

OTHER REFERENCES

Code of Federal Regulations (CFR) Title 33 CFR, 2008, Navigation and Navigable Waters Code of Federal Regulations (CFR) Title 40, Chapter I, 2008, Environmental Protection Agency Code of Federal Regulations (CFR) Title 49, Chapter I, 2008, Pipeline and Hazardous Materials Safety

Administration, Department Of Transportation

3. REQUIREMENTS

3.1 General. The Contractor shall conform to all requirements specified in SFLC Std Spec 0000 and in this item, as applicable, during the performance of this availability.

NOTE

The requirements of paragraph 3.1 (General) applies to all work under the scope of this contract, whether explicitly stated in work items or not, and also to all other work subsequently authorized by changes, modifications, or extensions to the contract.

3.2 Contractor-provided fire watch personnel. The Contractor shall provide fire watch personnel and equipment.

3.3 Welding and brazing requirements. The Contractor shall perform all welding and allied processes, and NDI

1 (Rev-1) in accordance with SFLC Std Spec 0740.

3.4 HW disposal. The Contractor is considered as the generator of all contract-generated hazardous wastes and shall use its facility’s EPA generator ID number for management, transportation, and disposal of said hazardous wastes. Ensure the following:

3.4.1 Contractor’s hazardous waste handlers shall comply with applicable requirements of 40 CFR 262.

3.4.2 All contract generated hazardous wastes shall be packaged in 49 CFR-compliant containers.

3.4.3 The designated wastes shall be disposed of at a state or Federally-approved and permitted HW TSDF.

3.4.4 Name of destination TSDF shall be submitted to the KO at the Arrival Conference.

4. NOTES

4.1 Access to COMDTINST M10360.3. The COMDTINST M10360.3 may be accessed at the following URL address: http://www.uscg.mil/directives/cim.asp

4.2 QA inspection forms. QA inspection forms (QA-1 thru QA-5), required in SFLC Std Spec 0000 to be completed and submitted during preservation of “critical-coated surfaces”, are provided at the end of this document.

2 (Rev-1) http://www.uscg.mil/directives/cim.asp

QA-1 - QUALITY ASSURANCE INSPECTION FORM

(PRESERVATION CHECKLIST)

Vessel Name: _______________________ Hull Number: ______________ CLIN No.: _____________ Work Item Title: ________________________________________________ Specific Area Being Preserved: ___________________________________________________________

CHECKPOINT 1 – COATING SYSTEM COMPLIANCE

Ensure all coatings are in compliance with COMDTINST M10360.3, Appendix C.

CHECKPOINT 2 - PAINT STORAGE

Ensure all coatings are kept at a temperature of 65 to 85°F at all times, unless otherwise specified by the coating manufacturer(s).

CHECKPOINT 3 - AMBIENT CONDITIONS

Ensure surface and surrounding temperatures are each between 50 and 90°F for water-based coatings, and 35 and 95°F for other coatings, unless otherwise specified by the coating manufacturer(s).

Ensure maximum relative humidity (RH) is as follows, from surface preparations through final curing of topcoat: 50% for tanks, voids, and vent plenum; and 85% for all other areas, unless otherwise specified by manufacturer(s).

Ensure surface temperature is at least 5°F above the dew point, unless otherwise specified by the coating manufacturer(s).

CHECKPOINT 4 - PRE-SURFACE PREPARATION

Remove surface contaminants (soluble salts, loose rust, mud, and marine growth) with low pressure fresh water wash down (maximum 5,000 psi). If oil and grease are present, perform solvent cleaning, as per SSPC SP-1.

CHECKPOINT 5 - SURFACE PREPARATION

Verify environmental conditions (see CHECKPOINT 3).

Ensure cleanliness of prepared surface is as per specification (i.e.: SSPC SP-12, SP-11, SP-10…).

Verify surface anchor profile (1.5-3.5 mils for abrasive-blasted steel surfaces; 1.0 mil (minimum) for power-tool cleaned surfaces; 1.0-1.5 mils for abrasive-blasted aluminum surfaces); and 1.5 –2.5 for surfaces to be coated w/single coat of inorganic zinc). Conduct 5 sets of 3 readings for the first 3 100-sqft areas, followed by 5 sets of 3 readings for each succeeding 1000-sqft area.

Measure soluble salt conductivity (5 measurements per 1000 sqft) – maximum threshold: 70 microsiemens/cm for non-submerged surfaces and 30 microsiemens/cm for submerged surfaces.

CHECKPOINT 6 - PRIMER COAT APPLICATION

Verify environmental conditions (see CHECKPOINT 3).

Verify proper mixing and stand-in (induction) times.

Ensure no paint is applied when the temperature is expected to drop to freezing before the paint has dried.

Ensure surfaces are completely dry, unless otherwise allowed by the coating manufacturer(s).

Verify wet film thickness (WFT) at random, to prevent under or over application. Verify final DFT.

Brush out all runs, sags, drips, and puddles.

Perform visual inspection for holidays and other defects.

CHECKPOINT 7 – STRIPE COAT APPLICATION

Verify environmental conditions (see CHECKPOINT 3).

Ensure overcoating window is as per manufacturer’s instructions.

After primer coat (mist coat after inorganic zinc), brush-apply un-thinned coat of same primer paint over edges, weld seams, cut-outs, and areas of complex geometries @ 3-4 mils wet film thickness (WFT).

CHECKPOINT 8 – TOP COAT APPLICATION

Verify environmental conditions (see CHECKPOINT 3).

Ensure overcoating window is as per manufacturer’s instructions.

Verify proper mixing and stand-in (induction) times, as applicable.

Verify wet film thickness at random, to prevent under or over application.

Brush out all runs, sags, drips, and puddles.

CHECKPOINT 9 – FINAL INSPECTION

Verify final system dry film thickness.

Ensure that system cure is in accordance with manufacturer's recommendation for intended service.

Ensure potable water tank exhaust ventilation is maintained continuously from and during coating application through final system cure, to exhaust all solvent to the atmosphere and to prevent solvent entrapment.

For immersion coatings (including tank U/W body), record date and time of the following events:

Final coat application:_________/_________; Return to service or removal from environment controls: _______/_______

CHECKPOINT 10 – RECORD KEEPING

Complete, sign, and submit all provided QA Inspection Forms.

Name of QP-1 or NACE-Certified Inspector: __________________________________________ Cert. No.: ____________ Signature of Inspector: _______________________________________ Date:_______________ Time: _________

3 (Rev-1)

QA-2 - QUALITY ASSURANCE INSPECTION FORM

(ENVIRONMENTAL READINGS)

Vessel Name: _______________________ Hull Number: ______________ CLIN No.: _____________ Work Item Title: ________________________________________________

(Use one sheet for each activity. Record conditions every four hours from before surface preparation to application of final coating system coat)

DATE &

TIME

ENTER ACTIVITY

(Surface preparation, primer coat, barrier coat, top coat, etc…)

LOCATION

TEMPERATURE

% REL.

HUMIDITY

SIGNATURE

OF

INSPECTOR DEW

POINT SURFACE AMBIENT

?T | DP - Surface

Name of QP-1 or NACE-Certified Inspector: __________________________________________ Cert. No.: ____________ Signature of Inspector: _______________________________________ Date:_______________ Time: _________

4 (Rev-1)

QA-3 - QUALITY ASSURANCE INSPECTION FORM

(SURFACE PROFILE LOG)

Vessel Name: _______________________ Hull Number: ______________ CLIN No.: _____________ Work Item Title: ________________________________________________ Location of Surface Profile Measurements: ___________________________________________________________

SURFACE PREPARATION METHOD PROFILE

(mils)

Min Max Avg.

SSPC-SP-10/NACE No. 2 SSPC-SP-12/NACE No. 5

SSPC-SP-3

SSPC-SP-11

SSPC-SP-11 (inaccessible area) Brush-blasting (non-metallic substrate)

Abrasive Manufacturer and Sieve Size: _________________________________ Place Surface Profile Replica Tapes In The Spaces Provided Below, To Serve As Permanent QA record. Maintain separate log for each area/location. When an Area Is Divided Into Separate Sections, Maintain A Separate Log for Each Section.

Place Surface Profile Replica Tape Here

Reading:__________ mils

Place Surface Profile Replica Tape Here

Reading:__________ mils

Place Surface Profile Replica Tape Here

Reading:__________ mils

Place Surface Profile Replica Tape Here

Reading:__________ mils

Place Surface Profile Replica Tape Here

Reading:__________ mils

Place Surface Profile Replica Tape Here

Reading:__________ mils

Place Surface Profile Replica Tape Here

Reading:__________ mils

Place Surface Profile Replica Tape Here

Reading:__________ mils

Place Surface Profile Replica Tape Here

Reading:__________ mils

Place Surface Profile Replica Tape Here

Reading:__________ mils

Place Surface Profile Replica Tape Here

Reading:__________ mils

Place Surface Profile Replica Tape Here

Reading:__________ mils Average Mil Reading (IAW ASTM D4417-Method C) for above 15 readings: ______________

Name of QP-1 or NACE-Certified Inspector: __________________________________________ Cert. No.: ____________ Signature of Inspector: _______________________________________ Date:_______________ Time: _________

5 (Rev-1)

QA-4 - QUALITY ASSURANCE INSPECTION FORM

(SURFACE SOLUBLE SALT CONDUCTIVITY LOG)

Vessel Name: _______________________ Hull Number: ______________ CLIN No.: _____________ Work Item Title: ________________________________________________

Location of Work (including frame numbers): _______________________________________ Area (square feet): ____________

DATE TEST LOCATIONS CONDUCTIVITY

(microsiemens/cm)

Name of QP-1 or NACE-Certified Inspector: __________________________________________ Cert. No.: ____________ Signature of Inspector: _______________________________________ Date:_______________ Time: _________

6 (Rev-1)

QA-5 - QUALITY ASSURANCE DATA FORM

(COATING THICKNESS)

(Use one sheet for each sequence) Vessel Name: _______________________ Hull Number: ______________ CLIN No.: _____________ Work Item Title: ________________________________________________

Coating Manufacturer: ___________________Product Name: _______________________Batch Number: ____________ Induction Time: _______________________________________________________________ Coating System Sequence (Indicate Whether: Primer, Touch-Up Primer, Barrier Coat, 3rd Coat…): __________________

DRY FILM THICKNESS (DFT) MEASUREMENTS IAW SSPC PA-2

SPOT 1 2 3 4 5 AVERAGE

VALUE

*BASE METAL

READING (BMR)

*Required, If Magnetic Pull-Of (Type I/Banana) Gauge Is Used.

Location (Frame Reference): ___________________

SPOT 1 2 3 4 5

Overall Avg. DFT

ADJUSTMENTS

1 Avg. BMR Deviation 3 Before

Adjustments After Adjustments

Avg.

Location (Frame Reference): ___________________

SPOT 1 2 3 4 5

Overall Avg. DFT

ADJUSTMENTS

1 Avg. BMR Deviation 3 Before

Adjustments After Adjustments

Avg.

Location (Frame Reference): ___________________

SPOT 1 2 3 4 5

Overall Avg. DFT

ADJUSTMENTS

1 Avg. BMR Deviation 3 Before

Adjustments After Adjustments

Avg.

Application Method (Airless, Conventional Spray, Rolled):____________________ Average DFT: __________________________________________________________

Name of QP-1 or NACE-Certified Inspector: __________________________________________ Cert. No.: ____________ Signature of Inspector: _______________________________________ Date:_______________ Time: _________

7 (Rev-1)

8 (Rev-1)

9 (Rev-1)

10 (Rev-1)

11010_UT_0110_FLT

REC_11010_UT_FLT_75 WLR (‘F’ Class: Hulls 75500-75501) (0110)

WORK ITEM 1: Hull Plating (U/W Body), Ultrasonic Testing - Tender

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to conduct ultrasonic testing (UT) of U/W hull plating.

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 75F WLR 085-012, Rev-, 75FT “F” Class Towboat Docking Block Arrangement Coast Guard Drawing 75F WLR 110-1, Rev 3, Shell Expansion

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), Jan 2009, Welding and Allied Processes

OTHER REFERENCES

None.

3. REQUIREMENTS

3.1 CIR. The Contractor shall submit a CIR for the inspections listed in the following paragraph:

• 3.2 (Ultrasonic thickness (UT) measurement).

3.2 Ultrasonic thickness (UT) measurement. The Contractor shall perform a total of _200_ UT measurements of U/W hull surfaces, in locations designated by the Coast Guard Inspector, in accordance with SFLC Std Spec 0740, Appendix C. Mark up a copy of Coast Guard Drawing 75F WLR 110-1 to show all locations selected for measurement and record all measurements in Table 1 (UT Measurements Summary Sheet - Port/Stbd Shell ) provided at the end of this item. Submit a CIR, to also include the marked up drawing(s) and completed Table 1 (see paragraph 4.1 (UT Sheet)).

4.1 UT Sheet. The following table is provided to summarize the UT shot results.

11 (Rev-1)

12 (Rev-1)

TABLE I - UT MEASUREMENTS SUMMARY SHEET PORT/STBD SHELL

SHOT # STRAKE # FWD/MID/AFT ORIG PL MEASURED PL PERCENT

PLATE # TOP/MID/BOT THICKNESS THICKNESS WASTAGE

11010_UT_0110_FLT

REC_11010_UT_FLT_130’ Barge (ALL) (0110)

WORK ITEM 2: Hull Plating (U/W Body), Ultrasonic Testing - Barge

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to conduct ultrasonic testing (UT) of U/W hull plating.

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 130 CGB71-77-085-004, Rev 1, Docking Plan

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), Jan 2009, Welding and Allied Processes

OTHER REFERENCES

None.

3. REQUIREMENTS

3.1 CIR. The Contractor shall submit a CIR for the inspections listed in the following paragraph:

• 3.2 (Ultrasonic thickness (UT) measurement).

3.2 Ultrasonic thickness (UT) measurement. The Contractor shall perform a total of _300_ UT measurements of U/W hull surfaces, in locations designated by the Coast Guard Inspector, in accordance with SFLC Std Spec 0740, Appendix C. Mark up a copy of Coast Guard Drawing 130 CGB71-77-085-004 to show all locations selected for measurement and record all measurements in Table 1 (UT Measurements Summary Sheet - Port/Stbd Shell ) provided at the end of this item. Submit a CIR, to also include the marked up drawing(s) and completed Table 1 (see paragraph 4.1 (UT Sheet)).

4. NOTES

4.1 UT Sheet. The following table is provided to summarize the UT shot results.

13 (Rev-1)

14 (Rev-1)

TABLE I - UT MEASUREMENTS SUMMARY SHEET PORT/STBD SHELL

SHOT # STRAKE # FWD/MID/AFT ORIG PL MEASURED PL PERCENT

PLATE # TOP/MID/BOT THICKNESS THICKNESS WASTAGE

24310_0110_FLT

REC_24310_FLT_75 WLR(‘F’ Class: Hulls 75500, 75501) [tender] (0708)

WORK ITEM 3: Propulsion Shafting ; Remove, Inspect, and Reinstall

1.1 Intent. This work item describes the requirements for the Contractor to remove, inspect, and reinstall a designated propeller shaft.

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 75F WLR 243-001, Rev 3, Shafting Arrangement Coast Guard Drawing 75F WLR 243-002, Rev 6, Shaft Details

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), Jan 2009, General

Requirements Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), Jan 2009, Welding and Allied Processes

3. REQUIREMENTS

3.1 General.

3.1.1 CIR. The Contractor shall submit a CIR for the inspections listed in the following paragraph(s):

• 3.2.2 (Inspections).

3.1.2 Interferences. The Contractor shall be aware that interferences in way of work include, but are not limited to the below-listed. Handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences):

• Rope guard.

15 (Rev-1)

• Fairwater.

3.2 Work to be accomplished. Using Coast Guard Drawings 75F WLR 243-001 and 75F WLR 243-002 as guidance, as applicable, the Contractor shall accomplish the following:

3.2.1 Removals.

• Mark existing shaft position, and match-mark shaft coupling bolts to their respective holes, to facilitate reinstallation procedures.

• Remove the shaft and attached components to a suitable repair facility. Ensure shaft is properly protected and supported at all bearing journals, at all times, until reinstallation.

3.2.2 Inspections. Clean the shaft free of all marine growth, and accomplish the following inspections, as applicable (Submit CIR):

3.2.2.1 Visually inspect the following components, as applicable, for excessive wear and other mechanical defects such as nicks, cracks, and corrosion:

• Shaft surfaces.

• Bearing surfaces.

• All shaft and propeller associated fasteners.

• Stern tube surfaces.

• Couplings.

• Stern tube/shaft sealing systems.

• Packing ring and glands.

NOTE

Before taking shaft runout readings, slowly spin the shaft on a lathe for approximately two hours to eliminate any sagging that may have occurred during handling and storage.

3.2.2.2 Complete the following measurements.

• Measure keys and keyways.

• Measure all bearing sleeve or journal diameters.

• Measure runouts for shaft taper, shaft straightness, and coupling end diameters.

• With the key in-place, fit the shaft coupling to the shaft in shop and check the contact percentage by bluing. If the contact is less than 80%, the Contractor shall grind and hand stone the coupling hub to achieve a minimum of 80 percent contact, and verify by bluing again. Make a small inscription on the shaft to mark the coupling hub location and use it as a reference in final assembly. Measure and record

16 (Rev-1) the coupling face and bore runouts.

3.2.2.3 Perform NDI of all bearing sleeves, shaft tapers, coupling bolts, keyways, and weld repaired surfaces in accordance with SFLC Std Spec 0740, Appendix C. Submit a CFR.

3.2.3 Reinstallation. Reinstall the propeller shaft to its original configuration and accomplish the following, using Coast Guard Drawings 75F WLR 243-001 and 75F WLR 243-002, as applicable.

3.2.3.1 Machine, grind, or hand-stone couplings, if necessary, to achieve an 80 percent contact. True couplings to shaft by cutting coupling faces and land area.

3.2.3.2 Renew all stainless steel self-locking nuts for packing glands.

3.2.3.3 Renew all packing materials.

3.3 Operational test – post repairs. After completion of work, the Contractor shall witness an operational test (by Coast Guard personnel) of the shafting system, for a minimum of 4 hours, to prove satisfactory operating condition. Submit a

CFR.

NOTE TO USERS: Discuss if there are physical symptoms of shaft misalignment, discuss at the earliest A-Team if an engine realignment is desired.

4. NOTES

This section is not applicable to this work item.

17 (Rev-1)

18 (Rev-1)

24350_MWS_0709_FLT

REC_24350_FLT_75 WLR(‘F’ Class: Hulls 75500, 75501) [tender] (0309)

WORK ITEM 4: Propulsion Shaft ing , Straighten

1.1 Intent. This work item describes the requirements for the Contractor to straighten a designated shaft.

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 75F WLR 243-001, Rev 3, Shafting Arrangement Coast Guard Drawing 75F WLR 243-002, Rev 6, Shaft Details

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), Jan 2009, Welding and Allied Processes

OTHER REFERENCES

MIL-STD-2191, Nov 1992, Nov 1992, Repair Welding, Weld Cladding, Straightening, and Cold Rolling of Main Propulsion Shafting

3. REQUIREMENTS

3.1 Shaft straightening requirements. Based on inspection results obtained from a related shaft work item in this specification package, or provided by the Coast Guard Inspector, the Contractor shall straighten the designated shaft, using Coast Guard Drawings 75F WLR 243-001, 75F WLR 243-002, and MIL-STD-2191 for guidance and as specified herein.

3.2 Pre-straightening inspection. Prior to initiating straightening processes, the Contractor shall determine the location, magnitude and type of bend in the shaft, with the entire shaft supported on centers in a lathe, as follows:

• Before taking shaft runout readings, spin the shaft on the lathe for approximately two hours to eliminate any sagging that may have occurred during handling and storage.

• Conduct a dial indicator survey of shaft runout at stations spaced every two feet of shaft length to determine the magnitude and location of the bend.

• At each station, mark the position of maximum runout on the periphery of the shaft.

NOTE

Be aware that the marks on the shaft periphery will be in a straight line if the shaft contains a simple bend, and will spiral part way around the shaft, if the shaft is both bent and twisted.

• Plot the maximum runout to an exaggerated scale, in order to locate the center of the bend, and to determine the extent of straightening required.

• Submit a CFR including locations and magnitudes of the bend.

3.3 Straightening procedures. The Contractor shall straighten the shaft to equal or less than 0.005" total indicator runout, using the localized heating (hot spotting method for carbon steel shafts, in accordance with MIL-STD-2191, Section 11.2.2.2 and sub-paragraphs).

3.4 Post-straightening inspections. After completion of straightening procedures, the Contractor shall accomplish inspections, and submit a CFR:

• Perform NDI of all straightened areas in accordance with Std Spec 0740, Appendix C.

• Recheck the shaft surfaces, as specified in paragraph 3.2 (Pre-straightening inspection).

4. NOTES

19 (Rev-1)

20 (Rev-1)

24370_MWS_FLT (1009)

REC_24370_FLT_75 WLR(‘F’ Class: Hulls 75500, 75501) [tender] (0809)

WORK ITEM 5: Propeller Shaft Sleeve(s), Renew

1.1 Intent. This work item describes the requirements for the Contractor to renew the sleeve(s) on port and starboard shafts.

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 75F WLR 243-001, Rev 3, Shafting Arrangement Coast Guard Drawing 75F WLR 243-002, Rev 6, Shaft Details

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), Jan 2009, Welding and Allied Processes

OTHER REFERENCES

NAVSEA Drawing 803-2145807, Rev C, Propulsion Shafting And Components

3. REQUIREMENTS

3.1 Sleeve renewal requirements. Using Coast Guard Drawings 75F WLR 243-001 and 75F WLR 243-002 as guidance, the Contractor shall accomplish the following, for port and starboard shafts:

3.1.1 Removal. Remove and dispose of the sleeve(s).

3.1.2 Inspections. Clean all shaft journal surfaces, and accomplish the following:

3.1.2.1 Perform a visual inspection of the shaft journal surfaces for corrosion, deterioration, and other signs of failures.

3.1.2.2 Measure and record in the shaft journal outside diameter and the shaft bearing inside diameter in the following positions:

• Forward.

• Middle.

• Aft.

3.1.2.3 Conduct nondestructive testing of all shaft surfaces in the way of sleeve fit areas, in accordance with SFLC Std Spec 0740, Appendix C.

3.1.3 Inspection report. The Contractor shall submit a CFR for the completed inspection and measurements.

3.1.4 New sleeve installation requirements. After the Coast Guard Inspector has reviewed all measurement findings, the Contractor shall furnish new hard steel nickel-chrome-boron shaft sleeves (see 4.1) and accomplish the following:

3.4.1 Machining of inside diameter (ID). Bore new sleeves’ID to the dimensions based on the recorded journal OD readings, to facilitate an interference fit, as specified below.

3.4.2 Installation. Install the new sleeves onto the shaft with a shrink-fit equal to 0.00075-inch per inch of shaft diameter, in accordance with NAVSEA Drawing 803-2145807, Table 8-1 (Shaft Sleeve Shrink Fit).

3.4.3 Machining of outside diameter (OD). After installation, machine new steps at the end of each sleeve where the shaft covering is required.

3.1.5 Concentricity measurement. Check the outside diameter of each shaft sleeve to ensure it is concentric with the axis of rotation within 0.0005 inch (0.001 inch runout).

3.1.6 Polishing. Polish the sleeve surfaces to a 32 micro-inch RMS finish, upon completion of installation and all required machining.

3.2 Final documentation. The Contractor shall provide a complete set of the new sleeve dimensional readings to the COTR within 48 hours after completion of sleeve installation. At a minimum, the set of readings shall include the new sleeve length, diameters (inside and outside) at the bearing journals, concentricity, and polish.

4. NOTES

4.1 Nickel-chrome-boron shaft sleeve suppliers. Suppliers for the nickel-chrome-boron shaft sleeve include, but are not limited to the following:

National Maintenance and Repair Hartford, Illinois Phone: (618) 254-7451

Dover Corp/Dover Diversified/Waukesha Bearings Corporation Waukesha, Wisconsin Phone: (414) 547-3381

21 (Rev-1)

22 (Rev-1)

24410_0210_FLT

REC_24410_FLT_75F WLR (ALL) (0908)

WORK ITEM 6: Propulsion Shaft Bearings (External), Renew

1.1 Intent. This work item describes the requirements for the Contractor to renew the external propulsion bearings for port and starboard shafts.

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 75F WLR 243-001, Rev 3, Shafting Arrangement Coast Guard Drawing 75F WLR 243-002, Rev 5, Shaft Details

COAST GUARD PUBLICATIONS

None.

OTHER REFERENCES

None.

3. REQUIREMENTS

3.1 General.

3.1.1 CIR.

None.

3.1.2 Technical Representative.

Not applicable.

3.1.3 Protective measures.

3.1.4 Interferences.

None.

3.2 Bearing renewal particulars. The Contractor shall accomplish the following, using Coast Guard Drawings 75F WLR 243-001 and 75F WLR 243-002 as guidance:

3.2.1 Removal. Remove the existing external bearings; dispose of the removed bearings after visually inspection for any abnormal wear patterns which may indicate misalignment. Submit CFR.

3.2.2 Inspections.

3.2.2.1 Visually inspect the following, as applicable, and submit a CFR:

• Chocking material, if installed in the bearing housings.

• Bearings.

• Bearing housing bores.

• Shaft journal in way of bearings.

3.2.2.2 Measure and record the inner diameter of each bearing housing at the forward, middle and aft positions.

Submit a CFR.

3.2.3 New bearing installation. The Contractor shall furnish new external propulsion shaft bearings and accomplish the following:

3.2.3.1 Machine the new bearings to fit the bearing housing in accordance with the manufacturer's installation recommendations. Drill and tap new bolt holes on the new bearings to match the bearing housings for proper fit.

3.2.3.2 Install the new bearings in accordance with the bearing manufacturer's recommendations, using new Monel or type 316 stainless steel fasteners.

3.2.4 Final measurement. After new bearing installation, the Contractor shall measure and record final bearing clearances at 90-degree intervals around the shaft at forward and aft ends of the bearing: a total of 8 measurements per bearing Submit a CFR.

3.3 Inspection and operational test. The Contractor shall accomplish the following and submit a CFR:

3.3.1 Visual inspection. After shaft reinstallation, visually inspect the new bearings and record bearing clearances. Submit a CFR.

3.3.2 Operational test – post repairs. After completion of work, the Contractor shall witness an operational test (by Coast Guard personnel) of the propulsion shafting to prove satisfactory operating condition. Submit a CFR.

23 (Rev-1)

4.1 Bearing clearances. Minimum operating bearing clearance shall be as follows:

TABLE 1 – MINIMUM BEARING CLEARANCES

DIAMETER OF JOURNAL

(INCHES)

MINIMUM OPERATING CLEARANCE OF NEW

WATER-LUBRICATED BEARINGS (INCHES)

3 0.022 4 0.025 5 0.027 6 0.030 7 0.032 8 0.035 9 0.037

10 0.040 11 0.042 12 0.045 13 0.047 14 0.050

4.2 Bearing particulars. There are three Thordon composite marine bearings per stern tube.

24 (Rev-1)

25 (Rev-1)

24500_MWS_1009_FLT

REC_24500_FLT_75F WLR (0204)

WORK ITEM 7: Propellers, Remove, Inspect, and Reinstall

1.1 Intent. This work item describes the requirements for the Contractor to remove, inspect, and reinstall port and starboard propellers.

1.2 Government-furnished property.

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED COST

($/UNIT)

None

COAST GUARD DRAWINGS

Coast Guard Drawing 75F WLR 245-003, Rev 2, Propeller, Fairwater & Guard (6-blade)

COAST GUARD PUBLICATIONS

OTHER REFERENCES

International Standard For Organization (ISO) 484/2, 1981, Shipbuilding - Ship Screw Propeller -

Manufacturing Tolerances - Part 2: Propellers of Diameter Between 0.80 and 2.50 m, Inclusive MIL-PRF-16173, 2006, Corrosive Preventive Compound, Solvent Cutback, Cold Application

3. REQUIREMENTS

3.1 Protective and safety measures. The Contractor shall accomplish the following:

• Before removing each propeller or propeller nut, fit a shore from the floor of the dock to one propeller blade near the root, to prevent shock transmission to reduction gear, as necessary.

• Protect propeller blade edges and blade roots with suitable covers, at all times until reinstallation, to prevent damage.

3.2 Work to be accomplished. The Contractor shall accomplish the following for each propeller, using Coast Guard Drawing 75F WLR 245-003 as guidance.

3.2.1 Removal. Remove the propeller to a suitable repair shop.

NOTE

If it becomes necessary to apply heat to facilitate propeller removal, ensure that the hub temperature never exceeds 500 degrees Fahrenheit; in addition, ensure that gland, packing ring, fill and vent plugs are removed, and the adjacent shafting and canvas under the blade edge guards are protected from flame impingement.

3.2.2 Inspection. Visually inspect the propeller for any damage, cracks, and other defects. Examine and record the suction and pressure face thickness, blade tip profiles, leading and trailing edges, contours, track, width, diameter, taper, pitch, and keyway of the propeller in accordance with ISO 484/2, Class I. Submit a written CFR.

3.2.3 Polishing. Polish the propeller to a uniform 63 micro-inch RMS finish.

3.2.4 Propeller hub fitting check. In the presence of the Coast Guard Inspector and with the key in place, carefully check the fit of the propeller hub bore to the shaft taper by applying Prussian blue to the shaft taper.

3.2.4.1 Uniform fit. Obtain a uniform fit of 60 percent contact over the taper, with a slightly heavier fit on the larger end. Do not heat the shaft taper to compensate for a poor fit.

3.2.4.2 Propeller fit. If the fit is less than 60 percent, hand grind/stone the propeller hub bore to achieve the required fit.

WARNING!

Do not machine the shaft taper.

3.2.4.3 Location inscription. When 60 percent fit has been obtained, make a small inscription on the shaft to mark the propeller location. Use this mark as a reference in final assembly.

3.3 Propeller Installation.

3.3.1 Cleaning. For the final assembly, the propeller bore and shaft taper surfaces shall be clean and free of bluing, lubricants, dirt, foreign particles, or any other substance, which would hinder moving the propeller along the taper. Install the propeller with dry metal-to-metal contact to obtain the maximum frictional force for torque transmission. Renew the rubber O-rings and packing before reassembly, if applicable.

3.3.2 Assembly. With the propeller installed on the taper in the same position as when fitted, install the propeller nut and drive up the propeller until it is advanced forward about 1/16" beyond the inscribed mark as specified in

3.2.4.3 (Location inscription). Lock the nut in place with an appropriate locking device.

26 (Rev-1)

NOTE

It is prohibited to use grease, oil, or other substances on the taper to help drive the propeller.

3.3.3 Void filling. When applicable, the Contractor shall fill all internal voids in the propeller hub and cap with rust preventive compound conforming to MIL-PRF-16173, Class II, Grade 3. Renew all brass plugs.

3.3.4 Adhere to the following warnings:

• Do not heat the propeller hub, to compensate for a poor fit on the shaft taper.

• Do not machine the shaft taper to achieve the required fit.

3.3.4.1 Lock propeller nut in place with new stainless steel lock washer or monel cap screws.

3.4 Government’s right for changing out a propeller. The Contractor shall be aware that the Government reserves the right to furnish a new propeller for installation in place of the existing propeller. If the Government exercises this right, the Contractor shall turn over the removed propeller to the Coast Guard PA as a MTI item.

4. NOTES

4.1 Propeller details. 46" dia x 51" pitch 6-blade stainless steel propellers.

27 (Rev-1)

28 (Rev-1)

24520_MWS_1209_FLT

REC_24520_FLT_75F WLR (ALL) (0604)

WORK ITEM 8: Propeller, Perform Minor Repairs and Reconditioning

1.1 Intent. This work item describes the requirements for the Contractor to perform minor repairs and reconditioning of a designated propeller.

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 75F WLR 245-003, Rev 2, Propeller, Fairwaters & Guards (6 Blade)

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), Jan 2009, Welding and Allied Processes

OTHER REFERENCES

American Bureau of Shipping (ABS) 2, Rule Requirements for Survey After Construction, 2007, Part 7, Appendix Section 10, Guide for Bronze and Stainless Steel Propeller Castings ASTM…