801_DD_KAM_10R0.pdf

USCGC HUDSON (WLIC-801)

160 FOOT A CLASS CONSTRUCTION BUOY TENDER

SPECIFICATION FOR DRYDOCK REPAIRS

Developed By:

Katharine Munkenbeck

Commander (v) Maintenance and Logistics Command, Atlantic 300 E. Main Street, Suite (600) Norfolk, VA 23510-9102

(September 28, 2009 / Rev-0)

TABLE OF CONTENTS

Work Item Title Page

List of Sketches iii

Revisions Record iv

List of Applicable References v

List of Government-furnished Property x

List of Critical Inspection Items xi

Specification Feedback xii

Principle Characteristics xiii

General Requirements 1

1 Perform Ultrasonic Thickness Measurements (500 Shots) 9

2 Perform Ultrasonic Thickness Measurements (250 Shots) 11

3 Remove, Inspect, and Reinstall Propeller Shafts 13

4 Renew Mechanical Shaft Seal Assemblies 17

5 Renew Water-Lubricated Shaft Bearings 20

6 Renew Propeller Shaft Sleeve(s) 23

7 Remove, Inspect, and Reinstall Propellers 26

8 Perform Minor Repairs and Reconditioning of Propeller 31

9 Clean, Inspect, and Test Grid Coolers 35

10 Renew Depth Indicating Transducers 40

11 Overhaul and Renew Sea Valves 43

12 Renew Sea Strainer(s) 49

Page i (Rev-0)

13 Remove, Inspect and Reinstall Rudder Assemblies 52

14 Inspect Various Deck Fittings 56

15 Preserve Construction Deck 58

16 Preserve Underwater Body – “Partial” 60

17 Preserve Underwater Body – “100%” 63

18 Preserve Stern Tubes 65

19 Renew Cathodic Protection System 67

20 Routine Drydocking 70

21 Provide Temporary Logistics 75

22 Reseal Cosmetic Polymeric Deck Covering Systems 78

23 Renew Bilge Longitudinals 80

24 Renew STBD Exhaust Stack Plating 82

25 Inspect Various Deck Plating 84

26 Inspect and Preserve Winch Foundations 87

27 Preserve Spud and Spud Well Surfaces 90

28 Shrink Wrap Crane 94

Page ii (Rev-0)

List of Sketches

Work Item Sketch Number Page

7 MLCA Sketch 24500D_803_SK 30

Page iii (Rev-0)

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.

Page iv (Rev-0)

List of Applicable 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. Electronic copies of the latest Editions of MLCA Standard Specifications are available on the Internet and may be accessed at the following Internet Uniform Resource Locator (URL) address:

http://www.uscg.mil/mlclant/vdiv/standard_specifications.asp.

Guidance for obtaining copies of all other documents referenced herein is provided in the solicitation.

Order of precedence. In the event of conflicts between text of this specification and the applicable references specified herein, order of precedence shall be in accordance with MLCA Standard Specification 0000_STD, paragraph 3.2 (Order of precedence), unless otherwise specified by the Contracting Officer (KO). The Contractor shall immediately notify the KO in writing of any perceived conflicts contained herein. Nothing in these documents, however, supersedes applicable laws and regulations, unless a specific exemption has been obtained.

FEDERAL AND MILITARY SPECIFICATIONS AND STANDARDS

MIL-A-18001, May 2005, Anodes, Sacrificial Zinc Alloy (Commercially Accepted - ASTM B418)

MIL-D-16791, Jan 1993, Detergents, General Purpose (Liquid, Nonionic)

MIL-PRF-16173, 2006, Corrosive Preventive Compound, Solvent Cutback, Cold Application

MIL-PRF-18458, May 2003, Grease, Wire Rope-Exposed Gear

MIL-PRF-24613, Dec 1990, Deck Covering Materials, Interior, Cosmetic Polymeric

MIL-PRF-24647, Feb 2005, Paint System, Anticorrosive and Antifouling, Ship Hull

MIL-PRF-83483, Feb 1998, Thread Compound, Antiseize, Molybdenum Disulfide Petrolatum

Page v (Rev-0) http://www.uscg.mil/mlclant/vdiv/standard_specifications.asp

MIL-STD-167-1, Nov 2005, Mechanical Vibrations of Shipboard Equipment (Type I - Environmental and Type II - Internally Excited)

Commercial Item Description (CID) A-A-59313, Nov 2003, Thread Compound; Antiseize, Zinc Dust-Petrolatum

OTHER GOVERNMENT DOCUMENTS, DRAWINGS, AND PUBLICATIONS

DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0000_STD, 2006 Edition, General Requirements

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 8634_STD, 2004 Edition, Drydocking

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 8635_STD, 2004 Edition, Provide Temporary Logistics

Coast Guard Maintenance and Logistics Command Atlantic (MLCA) Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes

DRAWINGS

Coast Guard Drawing 160 WLIC 0103-002, Rev A, Sheet 1, Booklet of General Plans

Coast Guard Drawing 160 WLIC 0700-003, Rev-, Docking Plan

(HUDSON)

Coast Guard Drawing 160 WLIC 1101-001, Rev E, Shell Plating Expansion and Longitudinal Framing

Coast Guard Drawing 160 WLIC 1107-001, Rev L, Deck House Eng Casing and Stacks

Coast Guard Drawing 160 WLIC 1108-002, Rev B, Shaft, Struts, And Stern Tubes

Coast Guard Drawing 160 WLIC 1112-004, Rev G, Miscellaneous Foundations Outside Machinery Space

Page vi (Rev-0)

Coast Guard Drawing 160 WLIC 1201-001, Rev D, Hull Fittings and Chain Stoppers

Coast Guard Drawing 160 WLIC 1205-001, Rev E, Spudwells and Spuds

Coast Guard Drawing 160 WLIC 2000-001, Rev -, Deck Machinery Arrangement and Details

Coast Guard Drawing 160 WLIC 2200-001 (Including BM-32), Rev C, Steering Machinery Arrangement Rudder Stock & Fitting

Coast Guard Drawing 160 WLIC 244-002, Rev -, Type FSE Seal (6” Fully Split)

Coast Guard Drawing 160 WLIC 3800-005, Rev 5, Arrt Heating and Chill Water Systems

Coast Guard Drawing 160 WLIC 4105-001, Rev D, Diag. F.O. Engine Cooling System

Coast Guard Drawing 160 WLIC 4105-002, Rev C, Arrangement of Engine Cooling Piping

Coast Guard Drawing 160 WLIC 4301-003, Rev A, Shafting Arrangement & Details

Coast Guard Drawing 160 WLIC 4400-003, Rev -, Propeller

Coast Guard Drawing 160 WLIC 4801-001, Rev C, Diagram-Firemain Ballast And Bilge System

Coast Guard Drawing 160 WLIC 4801-002, Rev G, Arrangement Firemain System Piping

Coast Guard Drawing 160B WLIC 1205-003, Hull Zinc

Coast Guard Drawing FL 6713-201, Rev B, CRP-V850 Transducer (B-

14) Adapter Assembly

Coast Guard Fleet Drawing FL 2602-10, Rev D, Spud Arrangements and Details

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

NAVSEA Drawing 803-921865, Rev R, Cathodic Protection Hull Zinc Anodes

Page vii (Rev-0)

PUBLICATIONS

Coast Guard Commandant Instruction (COMDTINST) M10360.3 (series), Jun 2006, Coatings and Color Manual

Coast Guard Technical Publication (TP) 3494, Technical Manual for Type F.S.E. Seal

Fernstrum Gridcooler Installation and Maintenance Manual, 2006, Form 165

Raytheon V850 Color Echosounder, 2nd Edition, Mar 1993, Operation Manual

INDUSTRY STANDARDS

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 of Mechanical Engineers (ASME) B16.34, 2004, Valves-Flanged, Threaded, and Welding End

Manufacturers' Standardization Society of the Valve and Fittings Industry (MSS) SP-80, 2003 Edition, Bronze Gate, Globe, Angle and Check 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-67, 2002 Edition, Butterfly Valves

Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) SP-61, 2003 Edition, Pressure Testing Of Steel Valves

Society of Automotive Engineers (SAE) Aerospace Material Specification (AMS) G-6032, 1999, Grease, Plug Valve, Gasoline and Oil Resistant, NATO Code Number G-363, Metric

The Society for Protective Coatings (SSPC) Surface Preparation Specification No.1 (SSPC-SP 1), 2004, Solvent Cleaning

The Society for Protective Coatings (SSPC)/NACE International (NACE) Joint Surface Preparation Standard SSPC-SP 7/NACE No.4, 2004, Brush-Off Blast Cleaning

Page viii (Rev-0)

The Society for Protective Coatings (SSPC)/NACE International (NACE) Joint Surface Preparation Standard SSPC-SP 12/NACE No.5, 2004, 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) 2004, Joint Surface Preparation Standard SSPC-SP 10/NACE No.2, Near-White Blast Cleaning

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

ASTM International (ASTM), D1709, 2009, Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method

ASTM International (ASTM), D1922, 2009, Standard Test Method for Propagation Tear Resistance of Plastic Film and Thin Sheeting by the Pendulum Method

ASTM International (ASTM) D1330, 2004, Standard Specification for Rubber Sheet Gaskets

ASTM International (ASTM) D3951, Reapproved 2004, Standard Practice for Commercial Packaging

ASTM International (ASTM) D882, 2009, Standard Test Method for Tensile Properties of Thin Plastic Sheeting

ASTM International (ASTM) E797, 2005, Standard Practice for Measuring Thickness by Manual Ultrasonic Pulse-Echo Contact Method

ASTM International (ASTM) F992, 2006, Standard Specification for Valve Label Plates

Page ix (Rev-0)

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)

3 Y **Propeller shaft NSN: 2010-01-076-3907 1 ea. 18,200.00

4 N Shaft seal assembly PN: H78011-01 2 ea. 13,350.00

5 N Stern Tube Bearing NSN: 3120-01-046-8511 2 ea. 2,180.00

5 N Aft Strut Bearing NSN: 3120-01-051-2510 2 ea. 4,903.00

6 N Stern Tube Sleeve NSN: 2010-01-035-7328 2 ea. 1,590.00

6 N Aft Strut Sleeve NSN: 2010-01-035-2178 2 ea. 1,390.00

7 Y Propeller (right hand) NSN: 2010-01-037-7295 1 ea. 4,200.00

7 Y Propeller (left hand) NSN: 2010-01-037-7597 1 ea. 4,200.00

7 N *Propeller nut wrench NSN: N/A 1 ea. 100.00

10 N ***V850 Color Echo Sounder NSN: 5845-01-518-7245 2 ea. 1,794.69

12 N Firemain Strainer NSN: N/A 2 ea. 3,500.00

12 N 2” Duplex Strainer #72-40F NSN: 4730-01-273-5843 1 ea. 3,775.16

12 N 3” Duplex Strainer #72-44F NSN: 4730-01-363-3085 1 ea. 3,228.48

13 Y **Rudder NSN: N/A 2 ea. 25,000.00 13 Y **Rudder stock NSN: 2040-01-F93-3054 2 ea. 9,000.00

20 N *Transducer cover plate NSN: N/A 2 ea. 50.00

26 Y **HU40A Winch NSN: 3950-01-384-4758 4 ea. 6767.28 *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, Electronic Systems Support Unit (ESU) or local Electronic Support Detachment (ESD).

Page x (Rev-0)

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 Std Spec 0000_STD, paragraph 3.6.2 (Inspection report particulars)):

Work Item Title

1 Perform Ultrasonic Thickness Measurements

3 Remove, Inspect, and Reinstall Propeller Shafts

9 Clean, Inspect, and Test Grid Coolers

13 Remove, Inspect and Reinstall Rudder Assemblies

18 Preserve Stern Tubes

25 Inspect Various Deck Plating

26 Inspect and Preserve Winch Foundations

27 Preserve Spud and Spud Well Surfaces

Page xi (Rev-0)

Specification Feedback

The intent of this section is to inform all users that a spec feedback mechanism is in place, and is located on the MLCA Naval Engineering Division’s website. Spec feedback is a very important part of our overall continuous improvement process, and is crucial to specification development. It will allow spec writers to capture all specification-related lessons learned, and avoid mistakes or ambiguities in follow-on availabilities.

All feedback will be reviewed, evaluated, and responded to in a timely manner.

If you have access to the CGWeb (Intranet), please use the following link, which will connect you to the MLCA(v) Naval Engineering website, for submitting your feedbacks:

http://webapps.mlca.uscg.mil/vdiv/specifications/feedback/defaul t.cfm

If you do not have access to the CGWeb (Intranet), you may still submit your feedbacks, using the following web link:

http://www.uscg.mil/mlclant/vdiv/specfeedback.asp

Page xii (Rev-0) http://webapps.mlca.uscg.mil/vdiv/specifications/feedback/default.cfm http://webapps.mlca.uscg.mil/vdiv/specifications/feedback/default.cfm http://www.uscg.mil/mlclant/vdiv/specfeedback.asp

PC_160_WLIC

(07 Jan 2004)

Principle Characteristics

160' WLIC Inland Construction Tender

Length Overall 160' 10"

Depth (main deck at side to baseline) 10' 0"

Maximum Beam 30' 0"

Height of Highest Projection (above DWL) N/A

Frame Spacing 1' 0"

Full Load Draft 5' 0"

Full Load Displacement 460 long tons

Shore Tie Voltage Requirements N/A

PROPELLERS / SHAFT

Number of Propellers 2

Number of Blades per Propeller 4

Diameter of Propeller 48"

Pitch 44" fixed

Revolutions per Minute (RPM) 475

Shaft Diameter N/A

Page xiii (Rev-0)

00000_DLA_FLT (23 Oct 2008)

General Requirements

1. SCOPE

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

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0000_STD, 2006 Edition, General Requirements

Coast Guard Maintenance and Logistics Command Atlantic (MLCA) Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes

Coast Guard Commandant Instruction (COMDTINST) M10360.3 (series), Jun 2006, Coatings and Color Manual

3. REQUIREMENTS

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

NOTICE!

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 nondestructive inspection (NDI), in accordance with Std Spec 0740_STD.

Page 1 (Rev-0)

3.4 Term substitution - COTR for COR. The Contractor shall be aware that the term "COR" (Contracting Officer's Representative) has been discontinued in favor of "COTR" (Contracting Officer's Technical Representative); consequently, whenever "COR" is encountered in this specification package, including referenced standard specifications and other referenced documents, it shall refer to "COTR", explicitly.

3.5 Small boat storage. When a small boat (Motor Surf Boat

(MSB)/Motor Cargo Boat (MCB)/Rigid Hull Inflatable (RHI) boat) is removed as interference to Contractor-work, the Contractor shall provide a suitable pier side storage cradle, for safely storing said boat.

3.5.1 Cradle design. Ensure that the temporary cradle meets

the following criteria:

• Structure is templated from the geometry and arrangement of the contact support areas of the existing cradle onboard the vessel, to provide same or more support area as that which is provided by the existing cradle.

• Arrangement will allow ship’s force to perform maintenance on the small boat, without modification of the cradle.

• Structure is manufactured using the most economical methods and materials available, and is capable of supporting the full weight of the small boat under normal conditions experienced during routine maintenance.

• Contact surfaces are no harder or rougher than the contact surfaces for existing cradle onboard the vessel.

3.5.2 Boat accessibility. Ensure the storage is located in the vicinity of the vessel, and is unrestricted, to allow for ship's force to complete maintenance during normal working hours for the entire performance period.

3.5.3 Boat protection. Provide full protection that can be

safely and completely secured when the small boat is left unattended (e.g. watertight cover, storage in a warehouse or shop, etc.), in addition to isolating the boat from the elements.

3.5.4 Boat transportation. Transport each small boat to its

storage area within one week of docking the vessel and back to the vessel prior to the end of the performance period.

Page 2 (Rev-0)

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 Std Spec 0000_STD to be completed and submitted during preservation of "critical-coated surfaces", are provided at the end of this item.

Page 3 (Rev-0) http://www.uscg.mil/directives/cim.asp

QA-1: QUALITY ASSURANCE INSPECTION FORM - PRESERVATION CHECKLIST

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).

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 at random, to prevent under or over application.

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.

Verify system cure for service resumption - U/W Body surfaces: 5-8 hours @ 77 degrees F; Potable water tanks: 7 days @

77 degrees F.

Ensure potable water tank exhaust ventilation is maintained continuously from and during coating application through final system cure (minimum 7 days @ 77 degrees F.), to exhaust all solvent to the atmosphere and to prevent solvent entrapment.

CHECKPOINT 10 - RECORD KEEPING

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

Signature of Inspector:______________________________________________________Date:____________

Page 4 (Rev-0)

QA-2. QUALITY ASSURANCE INSPECTION FORM

ENVIRONMENTAL READINGS

(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 DEW

POINT

SURFACE

TEMP.

% REL.

HUMIDITY

SIGNATURE

OF

INSPECTOR

.Signature of Inspector:__________________________________________________Date:____________

Page 5 (Rev-0)

QA-3 QUALITY ASSURANCE INSPECTION FORM

SURFACE PROFILE LOG

Vessel Name And Hull Number:__________________________________________________

Work Item Title:_______________________________________________________________

Location Of Work (Including Frame Numbers):_____________________________________

Area (Square Feet):_____________

Surface Preparation Method:_____________________________________________________

Abrasive Manufacturer And Size:_________________________________________________

Degreasing Method Used:________________________________________________________

Number Of Hours Surfaces (Steel Only) Left Unpainted:______________________________

Sweep blasting performed to remove flash rusting (steel)? Yes/No:_____________________

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.

AVERAGE MILS

(IAW ASTM D4417,

METHOD C)

Place Surface Profile Replica Tape Here

Reading:__________ mils

• Place Surface Profile Replica Tape Here

Date and Time:__________________________________________________

Location of Surface Profile Measurements:___________________________________________________________

Signature of Inspector:____________________________________________________________________________

Page 6 (Rev-0)

QA-4. QUALITY ASSURANCE INSPECTION FORM

SURFACE SOLUBLE SALT CONDUCTIVITY LOG

Vessel Name and Hull Number:__________________________________________________

Work Item Title:_______________________________________________________________

Location of Work (including frame numbers):_______________________________________

Area (square feet):____________

DATE TEST LOCATIONS CONDUCTIVITY

(microsiemens/cm)

Date and Time:_________________________________________

Signature of Inspector:___________________________________

Page 7 (Rev-0)

QA-5. QUALITY ASSURANCE DATA FORM

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

(Use one sheet for each sequence)

Vessel Name and Hull Number:__________________________________________________

Work Item Title:______________________________________________________________

Coating Manufacturer:_________________________________________________________

Product Name:________________________________________________________________

Batch Number:________________________________________________________________

Induction Time:_______________________________________________________________

Coating System Sequence (Indicate whether: primer, touch-up primer, barrier coat, 3rd coat?):__________________

DFT

MEASUREMENT

NUMBER

LOCATION OF READINGS MEASURED DFT

Application Method (Airless, Conventional Spray, Rolled):____________________

Average DFT: __________________________________________________________

Date and Time: _________________________________________________________

Signature of Inspector: ___________________________________

Page 8 (Rev-0)

11003_UT.UWB_TEF_FLT (03 Dec 2008)

WORK ITEM 1: Perform Ultrasonic Thickness Measurements (500 Shots)

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to perform up to 500 ultrasonic thickness measurements in locations designated by the COTR.

1.2 Government-furnished property.

None.

2. APPLICABLE DOCUMENTS

ASTM International (ASTM) E797, 2005, Standard Practice for Measuring Thickness by Manual Ultrasonic Pulse-Echo Contact Method

3. REQUIREMENTS

3.1 General.

3.1.1 Critical Inspection Report. The Contractor shall submit a critical inspection report (CIR) for the inspections listed in the following paragraph(s), within 24 hours after inspection completion:

• 3.2 (Thickness measurement particulars).

3.2 Ultrasonic thickness measurement. The Contractor shall

perform a total of 500 thickness measurements of surfaces designated by the Coast Guard Inspector. Submit a CIR.

Page 9 (Rev-0)

3.2.1 Ensure that the ultrasonic apparatus, procedure

requirements, and report shall be in accordance with ASTM E797, and that the report results shall additionally include the following information for each test point:

• Location.

• Original metal thickness.

• Measured metal thickness.

• Percent deterioration (calculation is based on the original metal thickness).

3.2.2 Perform ultrasonic equipment standardization in

accordance with ASTM E797, Section 7 (Standardization of Apparatus) and Section 8 (Technical Hazards).

4. NOTES

This section is not applicable to this work item.

Page 10 (Rev-0)

11003_UT.UWB_TEF_FLT (03 Dec 2008)

WORK ITEM 2: Perform Ultrasonic Thickness Measurements (250 Shots)

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to perform up to 250 ultrasonic thickness measurements in locations designated by the COTR.

1.2 Government-furnished property.

None.

2. APPLICABLE DOCUMENTS

ASTM International (ASTM) E797, 2005, Standard Practice for Measuring Thickness by Manual Ultrasonic Pulse-Echo Contact Method

3. REQUIREMENTS

3.1 Ultrasonic thickness measurement. The Contractor shall

perform a total of 250 thickness measurements of surfaces designated by the Coast Guard Inspector. Submit CFR.

3.1.1 Ensure that the ultrasonic apparatus, procedure

requirements, and report shall be in accordance with ASTM E797, and that the report results shall additionally include the following information for each test point:

• Location.

• Original metal thickness.

• Measured metal thickness.

• Percent deterioration (calculation is based on the original metal thickness).

3.1.2 Perform ultrasonic equipment standardization in

accordance with ASTM E797, Section 7 (Standardization of Apparatus) and Section 8 (Technical Hazards).

Page 11 (Rev-0)

Page 12 (Rev-0)

24310_MWS_FLT (14 Jan 2009) 160_WLIC (30 Jul 2008)

WORK ITEM 3: Remove, Inspect, and Reinstall Propeller Shafts

1. SCOPE

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

1.2 Government-furnished property.

MTI ITEM

DESCRIPTION NSN/PN QTY ESTIMATED COST

($/UNIT)

Y **Propeller shaft NSN: 2010-01-076-3907 1 ea. 18,200.00

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes

Coast Guard Drawing 160 WLIC 4301-003, Rev A, Shafting Arrangement and Details

3. REQUIREMENTS

3.1 General.

3.1.1 Critical Inspection Report. The Contractor shall submit a critical inspection report (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 following:

• Deck plates.

• Cat walk over the shaft.

• Rope guard.

Page 13 (Rev-0)

• Fairwater.

3.1.3 Technical representative services. The Contractor shall provide an on-site qualified technical representative (Tech Rep), who is familiar with the John Crane-Lips FSE stern shaft seal system, for the purpose of advising on manufacturer's proprietary information and clearances associated with the seal system, assisting with proper repair methods, and ensuring compliance with manufacturer's procedures and standards during disassembly, inspection, and reassembly of FSE shaft seal systems. Ensure that the Tech Rep is an official representative of Wartzila-Lips Inc. or its licensee, and is onsite during performance of work on the seal assemblies.

3.2 Work to be accomplished. Using Coast Guard Drawing 160 WLIC 4301-003 as guidance, as applicable, the Contractor shall accomplish the following for the port and starboard propeller shafts:

3.2.1 Removals. Under the supervision of the mechanical shaft seal Tech Rep, remove and disassemble the seal system.

• 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 Visual. 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.

Page 14 (Rev-0)

NOTICE!

Before taking shaft runout readings, spin the shaft on a lathe for approximately two hours at the vessel's maximum rated RPM to eliminate any sagging that may have occurred during handling and storage.

3.2.2.2 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 the coupling face and bore runouts.

3.2.2.3 Perform nondestructive inspection of all bearing

sleeves, shaft tapers, coupling bolts, keyways, and welded repair surfaces, in accordance with Std Spec 0740_STD, Appendix C.

3.2.3 Reinstallation. Reinstall the propeller shaft to its original configuration and accomplish the following, using Coast Guard Drawing 160 WLIC 4301-1, as applicable. 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.

3.2.3.1 If a change request has been approved by the KO, the

Contractor shall renew the rope guards and shaft fairwaters at the time of reinstallation.

3.3 Government-furnished shaft. The Contractor shall be aware that the Government reserves the right to furnish a spare propeller shaft to be installed in lieu of the one removed. After a Change Request has been released and authorized by the KO, the Contractor shall transport the spare shaft to a suitable inspection facility, perform the inspections specified in paragraph 3.2.2 (Inspections), and submit a CFR.

Page 15 (Rev-0)

3.4 Post-repair operational testing. In the presence of the Coast Guard Inspector, the Contractor shall thoroughly test and prove the shafting system to be in satisfactory operating condition (see 4.1 (Equipment operation)). Conduct a sea trial to test the propeller shaft in all modes of operation for a minimum of 4 hours. Inspect and correct any excessive leakage, abnormal noise and excessive vibration.

4. NOTES

4.1 Equipment operation. Coast Guard personnel will operate

all shipboard machinery and equipment during all operational tests.

4.2 Fiberglass covering. The Aquamet 19 (stainless steel)

shaft does not have a fiberglass covering.

Page 16 (Rev-0)

24360L_160 (22 Jan 2004)

WORK ITEM 4: Renew Mechanical Shaft Seal Assemblies

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to renew the mechanical shaft seal assemblies for the port and starboard propeller shafts under the supervision of a Government-furnished Technical Representative.

1.2 Government-furnished property.

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED COST

($/UNIT)

N Shaft seal assembly PN: H78011-01 2 ea. $13,350

2. APPLICABLE DOCUMENTS

Coast Guard Drawing 160 WLIC 4301-003, Rev A, Shafting Arrangement & Details

Coast Guard Drawing 160 WLIC 244-002, Rev -, Type FSE Seal (6” Fully Split)

Coast Guard Technical Publication (TP) 3494, Technical Manual for Type F.S.E. Seal

3. REQUIREMENTS

3.1 General.

3.1.1 Interferences. The Contractor shall be aware that

interferences in way of work include, but are not limited to the following:

• Propeller shaft.

• Propeller shaft coupling.

• Propeller shaft guard.

• Coupling shaft guard.

Page 17 (Rev-0)

Each fully split seal can be removed and installed without disturbing the shaft.

3.1.2 Technical representative (Tech Rep) services. The

Contractor shall be aware that the Government will provide an on-site qualified technical representative to supervise and oversee the performance of the following work:

• Remove the mechanical shaft seal assemblies.

• Inspect and report any abnormality.

• Assemble and install the Government-furnished mechanical shaft seal.

• Advise contractor on manufacturer's proprietary information, dimensions, and clearances associated with the seal system.

3.2 Renewal. The Contractor shall renew the mechanical shaft

seal assemblies with Government-furnished property as listed in paragraph 1.2 for the port and starboard propeller shafts under the supervision of a Government-furnished Technical Representative as well as using Coast Guard Drawing 160 WLIC 244-002, 160 WLIC 4301-003, and TP 3494 for guidance.

NOTICE!

The timeline for all work associated with the shaft seal shall be determined at the arrival conference.

3.3 Post-repair operational testing. In the presence of the

Coast Guard Inspector, and under the supervision of Tech Rep, the Contractor shall thoroughly test and prove the shaft seal assemblies to be in satisfactory operating condition (see 4.1 (Equipment operation)). Inspect and correct any water leaks, abnormal noise, and any binding in normal shaft operation.

Submit CFR.

NOTICE!

Pay special attention to water leaks, abnormal noises, and any binding in normal shaft operation.

Page 18 (Rev-0)

4 NOTES

4.1 Equipment operation. Coast Guard personnel will operate

all shipboard machinery and equipment during all operational tests.

Page 19 (Rev-0)

24400_MWS_FLT (10 Sept 2008) 160 WLIC (10 Sept 2008)

WORK ITEM 5: Renew Water-Lubricated Shaft Bearings

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to renew the water-lubricated bearings for a designated propeller shaft.

1.2 Government-furnished property.

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED COST

($/UNIT)

N Stern Tube Bearing NSN: 3120-01-046-8511 2 ea. $2,180.00 N Aft Strut Bearing NSN: 3120-01-051-2510 2 ea. $4,903.00

2. APPLICABLE DOCUMENTS

Coast Guard Drawing 160 WLIC 1108-002, Rev B, Shaft, Struts, And Stern Tubes

Coast Guard Drawing 160 WLIC 4301-003, Rev A, Shafting Arrangement and Details

3. REQUIREMENTS

3.1 Bearing renewal. The Contractor shall accomplish the

following, using Coast Guard Drawings 160 WLIC 1108-002 and 4301-003 as guidance:

3.1.1 Removal. Remove the existing water-lubricated bearings;

dispose of the removed bearings after visually inspection for any abnormal wear patterns which may indicate misalignment.

Submit CFR.

Page 20 (Rev-0)

3.1.2 Inspections.

3.1.2.1 Visual. Visually inspect the following:

• Chocking material, if installed in the bearing housings.

• Bearings.

• Bearing housing bores.

• Shaft journal in way of bearings.

• Shaft strut condition

3.1.2.2 Measurements. Measure the inner diameter of each

bearing housing at the forward, middle and aft positions.

3.1.2.3 Documentation. Submit a CFR after the inspection and

measurements.

3.1.3 New bearing installation. The Contractor shall

accomplish the following to the Government-furnished water-lubricated bearings, using Coast Guard Drawing 160 WLIC 1108-002 as guidance:

3.1.3.1 Alignment check of bearing carriers. In the presence

of the Coast Guard Inspector, the Contractor shall check the alignment of the stern tube, forward seal flange, and bearing carriers relative to the shaft centerline including any offsets by running a taut line, using the optical scopes method, or using laser alignment.

3.1.3.2 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.

3.1.3.3 Install the new water-lubricated bearings in accordance with the bearing manufacturer's recommendations, using new monel or type 316 stainless steel fasteners.

3.2 Final measurement. After bearing installation, the

Contractor shall:

3.2.1 Measure final bearing clearances at 90-degree intervals around the shaft at both ends of each bearing if accessible.

3.2.2 Submit a CFR after taking the measurements.

Page 21 (Rev-0)

3.2.3 Minimum operating bearing clearance shall be as follows:

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

3.3 Inspection and operational test. The Contractor shall

accomplish the following:

3.3.1 Visual inspection. Visually inspect the new bearings and record bearing clearances, after shaft reinstallation.

3.3.2 Operational test. Conduct an operational test of the

shaft during sea trials, to ensure there is no evidence of binding, abnormal vibration, and noise during sea trials.

3.3.3 Inspection and test documentation. Submit a CFR upon

completion of inspection and test.

Page 22 (Rev-0)

24420_MWS_FLT (18 Sep 2008) 160 WLIC (30 Jan 2004)

WORK ITEM 6: Renew Propeller Shaft Sleeve(s)

1. SCOPE

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

1.2 Government-furnished property.

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED COST

($/UNIT)

N Stern Tube Sleeve NSN: 2010-01-035-7328 2 ea. $1,590.00 N Aft Strut Sleeve NSN: 2010-01-035-2178 2 ea. $1,390.00

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes

Coast Guard Drawing 160 WLIC 4301-003, Rev A, Shafting Arrangement and Details

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

3. REQUIREMENTS

3.1 Sleeve renewal requirements. Using Coast Guard Drawing 160 WLIC 4301-003 as guidance, the Contractor shall accomplish the following, for the port and starboard propeller 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

Page 23 (Rev-0) 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 Std Spec 0740_STD, 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 measurements, the Contractor shall accomplish the following tasks for the Government-furnished shaft sleeves:

3.1.4.1 Bore new sleeve ID to the dimensions based on the

recorded journal outside diameter readings, to facilitate an interference fit, as specified below.

3.1.4.2 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_HM&E-STD 803-2145807, Table 8-1 (Shaft Sleeve Shrink Fit).

3.1.4.3 After installation, machine the sleeve OD based on the shaft bearing ID readings, including the required bearing clearance.

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.

Page 24 (Rev-0)

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.

Page 25 (Rev-0)

24500_MWS_FLT (18 Sep 2008) 160A WLIC (02 Feb 2004)

WORK ITEM 7: Remove, Inspect, and Reinstall Propellers

1. SCOPE

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

1.2 Government-furnished property.

MTI ITEM

DESCRIPTION NSN/PN QTY

ESTIMATED

COST

($/UNIT)

Y Propeller (right hand) NSN: 2010-01-037-7295 1 ea. 4,200.00

Y Propeller (left hand) NSN: 2010-01-037-7597 1 ea. 4,200.00

N Propeller nut wrench NSN: N/A 1 ea. 100.00

2. APPLICABLE DOCUMENTS

MIL-PRF-16173, 2006, Corrosive Preventive Compound, Solvent Cutback, Cold Application

Coast Guard Drawing 160 WLIC 4301-003, Rev A, Shafting Arrangement and Details

Coast Guard Drawing 160 WLIC 4400-003, Rev -, Propeller

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

Page 26 (Rev-0)

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 160 WLIC 4301-003, and 160 WLIC 4400-003 as guidance.

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

NOTICE!

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 80 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.

Page 27 (Rev-0)

3.2.4.2 Propeller fit. If the fit is less than 80 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 80 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.

NOTICE!

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. 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.

Page 28 (Rev-0)

3.3.4.1 Secure the propeller as follows: fabricate and install a new type 316L stainless steel hex head propeller nut and a hex head slotted propeller nut, as shown on MLCA SKETCH 24500D_803_SK. Provide an appropriately sized type 316L stainless steel cotter pin to be inserted through the shaft and the slotted nut.

3.4 Propeller change-out. The Contractor shall be aware that

the Government reserves the right to furnish a propeller to be installed in-place of the one removed. When the Government exercises this right, the Contractor shall turn over the removed propeller to the Coast Guard PA as a MTI item. If a Change Request has been authorized and released by the KO, the Contractor shall inspect the Government-furnished propeller, and submit a CFR including any additional work that may be required to install the new propeller to the existing shaft.

4. NOTES

4.1 Propeller details. NIAL Bronze alloy, 4 blades, 48"

diameter X 44" pitch.

Page 29 (Rev-0)

MLCA SKETCH 24500D_803_SK, Propeller Hex Head Slotted Nut (The propeller hex head nut is similar in design; however, it has no slots)

Page 30 (Rev-0)

24520_MWS_FLT (12 Sept 2008) 160 WLIC (30 Jun 2004)

WORK ITEM 8: Perform Minor Repairs and Reconditioning of Propeller

1. SCOPE

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. APPLICABLE DOCUMENTS

MIL-STD-167-1, Nov 2005, Mechanical Vibrations of Shipboard Equipment (Type I - Environmental and Type II - Internally Excited)

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes

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

Coast Guard Drawing 160 WLIC 4301-003, Rev A, Shafting Arrangement and Details

Coast Guard Drawing 160 WLIC 4400-003, Rev -, Propeller

ASTM International (ASTM) D3951, Reapproved 2004, Standard Practice for Commercial Packaging

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

Page 31 (Rev-0)

3.1 Requirements for repairs and reconditioning. The

Contractor shall accomplish the following:

3.1.1 General requirements. Perform minor repair and

reconditioning tasks on the surfaces of the designated propeller, including threaded holes, in accordance with ABS-2, Part 7, Appendix Section 10, Subsection 1 (Bronze Propellers), for the conditions defined in 4.2.1 (Conditions for minor repair and reconditioning). In addition, perform straightening, welding, heat-treating, re-pitching, and stress-relieving, as necessary, to restore the propeller to a serviceable condition, as defined in section 4.2.2 (Serviceable condition). Ensure that removal and/or addition of material should be limited to the minimum necessary to accomplish the required repairs.

3.1.1.1 All propeller tolerances must conform to the Class I

standard specified in ISO 484/2.

3.1.2 Balancing. Perform single-plane balancing of both

reconditioned propeller and cap on rotational balancing equipment to ensure freedom from vibration in accordance with MIL-STD-167-1 for Type II (internally excited) vibration;

observe the following requirements:

3.1.2.1 Material removal. Remove material as evenly as

possible from over the entire blade surface (both suction and pressure faces) but not closer to the blade edges than 10 percent of the blade width, to prevent "thin spots" when…