SPECIFICATION REV-1 2-2010.doc

USCGC SANGAMON (WLR-65506)

65 FOOT B CLASS RIVER BUOY TENDER AND

SANGAMON BARGE (CGB-99005)

100 FOOT B CLASS BARGE

SPECIFICATIONS FOR DRYDOCK REPAIRS

Developed By:

LT Christopher Floyd Katharine Munkenbeck

Surface Forces Logistics Center IBCT Product Line 300 E. Main Street, Suite (600) Norfolk, VA 23510-9102

TABLE OF CONTENTS

Work Item Title Page ivList of Sketches

Revisions Record v Consolidated List of References vi Consolidated List of Government-furnished Property xi Consolidated List of Critical Inspection Items xii Specification Feedback xiii Principal Characteristics xiv General Requirements Perform Ultrasonic Thickness Measurements - Underwater Hull Plating (Tender) Perform Ultrasonic Thickness Measurements - Underwater Hull Plating (Barge) Perform Hull and Structural Plating Repairs (10.2-Pound) Perform Hull and Structural Plating Repairs (12.75-Pound) Perform Hull and Structural Steel Plate Repairs (15.3-Pound) Perform Hull and Structural Steel Plate Repairs (20.5-Pound) Perform Hull and Structural Plating Repairs – Eroded Welds (Steel) Perform Hull and Structural Plating Repairs – Crack (Steel) Perform Hull and Structural Plating Repairs – Overlay Welding (Steel) Renew Propeller Shafts Renew Water-Lubricated Shaft Bearings Remove, Inspect, and Reinstall Propellers Remove, Inspect and Reinstall Rudder Assemblies Preserve Spud and Spud Well Surfaces (Tender) Preserve Spud and Spud Well Surfaces (Barge) Shrink Wrap Crane and Boat Davits Preserve Ballast Tank – 100% (Barge) Preserve Barge Buoy Deck Preserve Underwater Body (Tender) – “Partial” Preserve Underwater Body (Tender) – “100%” Preserve Underwater Body (Barge) – “Partial” Preserve Underwater Body (Barge) - 100%” Preserve Tender Freeboard – 100% Preserve Barge Freeboard – 100% Preserve Stern Tubes Routine Drydocking (Tender) Routine Drydocking (Barge) Provide Temporary Logistics (Tender) Provide Temporary Logistics (Barge) Renew Tender Keel Cooler Piping Restore Barge Void Access Perform Tender Structural Bulkhead Repairs Perform Barge Forward Rake Repairs

List of Sketches

Work

Item Sketch Number Page

This section is not applicable to this package.

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.

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.

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

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

MIL-PRF-24647, Feb 2005, Paint System, Anticorrosive and Antifouling, Ship Hull MIL-PRF-83483, Feb 1998, Thread Compound, Antiseize, Molybdenum Disulfide 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 MERGEFIELD "A1" Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 1001_STD, 2004 Edition, Temporary Hull Accesses

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 5000_STD, 2004 Edition, Auxiliary Machinery Systems 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

DRAWINGS

Coast Guard Drawing 100B CGB 0700-003, Rev -, Docking Block Arrangement Coast Guard Drawing 100B CGB 1101-001, Rev 3, Barge Plating & Bill of Material

Coast Guard Drawing 100B CGB 1101-002, Rev 1, Structural Plan Profile and Section

Coast Guard Drawing 100B CGB 1105-001, Rev 1, Transverse Bulkhead Details Coast Guard Drawing 100B CGB 2602-001, Rev 3, Spud Well

Coast Guard Drawing 100B CGB 2901-001, Rev 1, Tank Capacity Tables Coast Guard Drawing 65 WD 0700-004, Rev -, Docking Block Arrangement (“A” & “B” Class) Coast Guard Drawing 65B WD 1101-001, Rev -, Shell Expansion; Bulwark; Railing; Rub Rail; Chocks & Bow Fender

Coast Guard Drawing 65B WD 1101-002, Rev -, Hull Structure and Main Deck Plating Plan

Coast Guard Drawing 65B WD 2200-001, Rev-, Rudder and Steering Gear Details Coast Guard Drawing 65B WD 2602-1, Rev D, Spud and Spud Well

Coast Guard Drawing 65B WD 4103-003, Rev -, Engine Cooling System D/G Replacement

Coast Guard Drawing 65B WD 4302-001, Rev C, Propeller Shaft & Details

Coast Guard Drawing 65B WD 4302-002, Rev-, Propeller Shaft Brake Details

Coast Guard Drawing 65B WD 4400-2, Rev-, 48" dia x 46" Pitch 5 Bladed Propeller

Coast Guard Fleet Drawing FL 2602-10, Rev D, Spud Arrangements and Details NAVSEA Drawing 803-1385866, Rev E, MLCA Distribution Date 18 Aug 1999, Penetration, Bulkhead and Deck

PUBLICATIONS

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

INDUSTRY STANDARDS

American Society for Testing and Materials (ASTM) D1709, 10 August 2001, Standard Test Methods for Impact Resistance of Plastic Film by the Free-Falling Dart Method

American Society for Testing and Materials (ASTM) D1922 Rev A, 10 November 2000, Standard Test Method for Propagation Tear Resistance of Plastic Film and Thin Sheeting by the Pendulum Method

American Society for Testing and Materials (ASTM) D882, 2002, Standard Test Method for Tensile Properties of Thin Plastic Sheeting

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 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) 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, 2004, Surface Preparation and Cleaning of Steel & Other Hard Materials by High and Ultrahigh Pressure Water Jetting 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 ASTM International (ASTM) D1330, 2004, Standard Specification for Rubber Sheet Gaskets

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

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.

($/Unit)

1 ea.

2 ea.

*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).

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

Work Item Title

Perform Ultrasonic Thickness Measurements – Underwater Hull Plating (Tender) Perform Ultrasonic Thickness Measurements – Underwater Hull Plating (Barge)

Renew Propeller Shafts

Remove, Inspect and Reinstall Rudder Assemblies

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/default.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/specs/specfeedback.htm Principal Characteristics

65' WLR (B Class)"SANGAMON" Small Buoy River Tender

PROPELLERS / SHAFT

100’ CG BARGE (B CLASS) (CGB 99005)

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.

1.2 Government-furnished property.

None.

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 Fire Watch. The Coast Guard shall provide two (2) fire watch personnel. The Contractor shall provide portable fire extinguishers. If hot work requires more than two fire watches, 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.

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.

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.

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:____________

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)

.Signature of Inspector:__________________________________________________Date:____________

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

Reading:__________ mils

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Date and Time:__________________________________________________

Location of Surface Profile Measurements:___________________________________________________________

Signature of Inspector:____________________________________________________________________________

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):____________

(microsiemens/cm)

Date and Time:_________________________________________

Signature of Inspector:___________________________________

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

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

Average DFT: __________________________________________________________

Date and Time: _________________________________________________________

Signature of Inspector: ___________________________________

11003_UT.UWB_TEF_FLT (03 Dec 2008)

WORK ITEM 1: Perform Ultrasonic Thickness Measurements - Underwater Hull Plating (Tender)

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to perform thickness measurements of underwater hull plating, by ultrasonic methods.

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 Coast Guard Drawing 65B WD 1101-002, Rev-, Hull Structure and Main Deck Plating Plan

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 Thickness measurement particulars. The Contractor shall perform a total of 300 ultrasonic thickness measurements of the hull plating, in locations designated by the Coast Guard Inspector. Submit a CIR. Ensure that the ultrasonic apparatus, procedure requirements, and report shall be in accordance with ASTM E797, and the report results shall additionally include the following, for each test point:

· Location.

· Original metal thickness.

· Measured metal thickness.

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

3.3 Apparatus Standardization. The Contractor shall 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.

11003_UT.UWB_TEF_FLT (03 Dec 2008)

WORK ITEM 2: Perform Ultrasonic Thickness Measurements - Underwater Hull Plating (Barge)

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to perform thickness measurements of underwater hull plating, by ultrasonic methods.

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 Coast Guard Drawing 100B CGB 1101-001, Rev 3, Barge Plating & Bill of Material

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 Thickness measurement particulars. The Contractor shall perform a total of 300 ultrasonic thickness measurements of the hull plating, in locations designated by the Coast Guard Inspector. Submit a CIR. Ensure that the ultrasonic apparatus, procedure requirements, and report shall be in accordance with ASTM E797, and the report results shall additionally include the following, for each test point:

· Location.

· Original metal thickness.

· Measured metal thickness.

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

3.3 Apparatus Standardization. The Contractor shall 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.

11100_TEF_10.2LB_Steel Plating (30 Oct 2008)

WORK ITEM 3: Perform Hull and Structural Plating Repairs (10.2-Pound)

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to renew 1/4” thick (10.2-lb/sqft) steel structural plating.

1.2 Government-furnished property.

None.

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes MERGEFIELD "A1"

3. REQUIREMENTS

3.1 General. The Contractor shall perform all welding and nondestructive inspection (NDI) in accordance with Std Spec 0740_STD. Be aware that this work item includes all welding related activities only and does not include interference removal.

3.2 Renewal. If a Change Request has been authorized and released by the KO, the Contractor shall renew 1/4” thick (10.2- lb/sqft) steel structural plating, as designated by the Coast Guard Inspector, up to 16 square feet in increments of 4 square feet.

4. NOTES

This section is not applicable to this work item.

11100_TEF_12.75LB_Plating (30 Oct 2008)

WORK ITEM 4: Perform Hull and Structural Plating Repairs (12.75-Pound)

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to renew 5/16” thick (12.75-lb/sqft) steel plating.

1.2 Government-furnished property.

None.

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes MERGEFIELD "A1"

3. REQUIREMENTS

3.1 General. The Contractor shall perform all welding and nondestructive inspection (NDI) in accordance with Std Spec 0740_STD. Be aware that this work item includes all welding related activities only and does not include interference removal.

3.2 Renewal. If a Change Request has been authorized and released by the KO, the Contractor shall renew 5/16” thick (12.75-lb/sqft) steel plating, as designated by the Coast Guard Inspector, up to 16 square feet in increments of 4 square feet.

4. NOTES

This section is not applicable to this work item.

11100_TEF_15.3LB_Plating (30 Oct 2008)

WORK ITEM 5: Perform Hull and Structural Steel Plate Repairs (15.3-Pound)

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to renew 3/8” thick (15.3-lb/sqft) steel plating.

1.2 Government-furnished property.

None.

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes MERGEFIELD "A1"

3. REQUIREMENTS

3.1 General. The Contractor shall perform all welding and nondestructive inspection (NDI) in accordance with Std Spec 0740_STD. Be aware that this work item includes all welding related activities only and does not include interference removal.

3.2 Renewal. If a Change Request has been authorized and released by the KO, the Contractor shall renew 3/8” thick (15.3- lb/sqft) steel plating, as designated by the Coast Guard Inspector, up to 16 square feet in increments of 4 square feet.

4. NOTES

This section is not applicable to this work item.

11100_TEF_20.5LB_Steel Plating (08 Dec 2008)

WORK ITEM 6: Perform Hull and Structural Steel Plate Repairs (20.5-Pound)

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to renew 1/2” thick (20.5-lb/sqft) steel plating.

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA) Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes MERGEFIELD "A1"

3. REQUIREMENTS

3.1 General. The Contractor shall perform all welding and nondestructive inspection (NDI) in accordance with Std Spec 0740_STD. Be aware that this work item includes all welding related activities only and does not include interference removal.

3.2 Renewal. If a Change Request has been authorized and released by the KO, the Contractor shall renew 1/2” thick (20.5- lb/sqft) steel plating, as designated by the Coast Guard Inspector, in 4 square foot increments, up to 16 square feet.

4. NOTES

This section is not applicable to this work item. MERGEFIELD "N1A" MERGEFIELD "N1B"

MERGEFIELD "N1C"

MERGEFIELD "N1D"

11100_TEF_ERODED_STL_WELD (30 Oct 2008)

WORK ITEM 7: Perform Hull and Structural Plating Repairs – Eroded Welds (Steel)

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to renew eroded steel welds.

1.2 Government-furnished property.

None.

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes MERGEFIELD "A1"

3. REQUIREMENTS

3.1 General. The Contractor shall perform all welding and nondestructive inspection (NDI) in accordance with Std Spec 0740_STD. Be aware that this work item includes all welding related activities only and does not include interference removal.

3.2 Renewal. If a Change Request has been authorized and released by the KO, the Contractor shall renew the designated eroded steel welds, up to 10 linear feet in increments of 1 linear foot.

4. NOTES

This section is not applicable to this work item.

11100_TEF_STL_CRACK (30 Oct 2008)

WORK ITEM 8: Perform Hull and Structural Plating Repairs – Crack (Steel)

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to repair the cracked steel welds.

1.2 Government-furnished property.

None.

2. APPLICABLE DOCUMENTS

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

3. REQUIREMENTS

3.1 General. The Contractor shall perform all welding and nondestructive inspection (NDI) in accordance with Std Spec 0740_STD. Be aware that this work item includes all welding related activities only and does not include interference removal.

3.2 Repair particulars. If a Change Request has been authorized and released by the KO, the Contractor shall repair the designated cracked steel welds, up to 10 linear feet in increments of 1 linear foot.

4. NOTES

This section is not applicable to this work item.

11100_TEF_OVERLAY_STL (30 Oct 2008)

WORK ITEM 9: Perform Hull and Structural Plating Repairs – Overlay Welding (Steel)

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to perform overlay welding repairs.

1.2 Government-furnished property.

None.

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes MERGEFIELD "A1"

3. REQUIREMENTS

3.1 General. The Contractor shall perform all welding and nondestructive inspection (NDI) in accordance with Std Spec 0740_STD. Be aware that this work item includes all welding related activities only and does not include interference removal.

3.2 Repair particulars. If a Change Request has been authorized and released by the KO, the Contractor shall perform steel overlay welding repairs, up to 48 square inches in increments of 8 square inches.

4. NOTES

This section is not applicable to this work item.

S24310_KAM_65506 (17 Dec 2009)

24310_MWS_FLT (14 Jan 2009) 65B WLR (30 Jul 2008) WORK ITEM 10: Renew Propeller Shafts

1. SCOPE

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

1.2 Government-furnished property.

($/UNIT)

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes Coast Guard Drawing 65B WD 4302-001, Rev C, Propeller Shaft & Details Coast Guard Drawing 65B WD 4302-002, Rev-, Propeller Shaft Brake 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):

· 3.2.7 (Inspections).

3.1.2 Interferences. The Contractor shall be aware that interferences in way of work include, but are not limited to the following:

· Rope guard.

· Fairwater.

· Cooper bearing.

3.2 Work to be accomplished. Using Coast Guard Drawing 65B WD 4302-001 and 65B WD 4302-002 as guidance, as applicable, the Contractor shall accomplish the following for a designated propeller shaft:

NOTICE!

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

3.2.1 Measurements. The Contractor shall perform the following tasks for the new Government-furnished propeller shafts in the presence of Coast Guard Inspector:

· Check the straightness by measuring the total indicator run out of the propeller shaft.

· Measure the shaft journal diameters and runout in way of aft and mid strut bearings, and seal assembly.

· Check run-out of the shaft tapers and journals.

· Check the face and bore runouts on the shaft coupling.

3.2.2 Shaft Alignment. After removal of the existing propeller shaft, the Contractor shall check and monitor the alignment of the stern tube, struts, and bearing housing bores relative to the shaft centerline including any offsets using an optical method (bore sighting) or taut wire method. This inspection shall be done within 72 hours after the shaft is removed so that any misalignment can be corrected in a timely fashion. Take all readings at night, between midnight and dawn, to reduce the thermal distortion on the hull due to sunlight.

3.2.3 Take the initial reading and establish a baseline.

3.2.4 The shaft center reference line established by optical or piano wire method shall start from the center of reduction gear output shaft flange to a fixed point location where the propeller hub is centered.

3.2.5 Use as many reference points as possible to show if the bearing bores have been affected by the structural repair or hot work. Submit a CFR of how the shaft center reference line is established, locations of fix points, and any bearing offsets as noted.

3.2.5.1 Submit a CFR of findings, include any recommended repairs if the shaft alignment was affected by the structural repair or hot work.

3.2.6 Removal. The Contractor shall remove the existing propeller shaft, using Coast Guard Drawing 65B WD 4302-001 as guidance. Dispose of the removed shaft in accordance with all Federal, State, and local regulations.

3.2.7 Inspections. Visually inspect the following components, as applicable, for excessive wear and other mechanical defects such as nicks, cracks, and corrosion (Submit CIR):

· Bearing surfaces.

· All shaft and propeller associated fasteners.

· Stern tube surfaces.

· Couplings.

· Stern tube/shaft sealing systems.

· Packing ring and glands.

3.2.8 Installation. Install the new Government-furnished propeller shaft in the existing bearing positions and accomplish the following, using Coast Guard Drawing 65B WD 4302-001 and 65B WD 4302-002, as applicable.

3.2.8.1 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.

3.2.9 Alignment between coupling flanges. The Contractor shall check and correct reduction gear/propeller shaft alignment upon installation and the final coupling of the reduction gear and propulsion shaft. These alignment checks must be done while the vessel is waterborne. Calculate the pre-load weight and support the overhung shaft/coupling to ensure an accurate gap and sag measurement.

3.2.9.1 Parallel or bore alignment. Position the coupling flanges within 0.5” of each other and place a straight edge at the following points, Top/Bottom, and Outboard/Inboard. The bore or parallel misalignment shall not be greater than 0.005 inches.

3.2.9.2 Angular or Face Alignment. Bring the coupling flanges forward to within 0.5” face gap at all points about the diameter of the flanges. Take measurements of face gap at four equally spaced positions on the flange diameters using feeler gauge. Compare diametrically opposite face gap readings top to bottom, and inboard to outboard. Subtract the smaller of diametrically opposite readings from the larger. The resulting difference is proportional to the amount of angular or face misalignment. These readings shall not exceed 0.0005 inches per inch of companion flange outside diameter.

3.2.9.3 Adjust and correct any misalignment that is discovered during the alignment process.

3.3 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.

24400_MWS_FLT (10 Sept 2008) 65B WLR (10 Sept 2008) WORK ITEM 11: 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 the port and starboard shafts.

1.2 Government-furnished property.

None.

2. APPLICABLE DOCUMENTS

Coast Guard Drawing 65B WD 4302-001, Rev C, Propeller Shaft & Details

3. REQUIREMENTS

3.1 Related work item. The Contractor shall perform this work in conjunction with “Remove, Inspect, and Reinstall Propeller Shafts”, which is a separate work item in this specification package.

3.2 Bearing renewal. The Contractor shall accomplish the following, using Coast Guard Drawing 65B WD 4302-001 as guidance:

3.2.1 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.

3.2.2 Inspections.

3.2.2.1 Visual. Visually inspect the following:

· Chocking material, if installed in the bearing housings.

· Bearings.

· Bearing housing bores.

· Shaft journal in way of bearings.

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

3.2.2.3 Documentation. Submit a CFR after the inspection and measurements.

3.2.3 New bearing installation. The Contractor shall furnish water-lubricated bearings, and accomplish the following, using Coast Guard Drawing 65B WD 4302-001 as guidance:

3.2.3.1 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.

3.2.3.2 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.

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

3.3 Final measurement. After bearing installation, the Contractor shall:

3.3.1 Measure 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.

3.3.2 Submit a CFR after taking the measurements.

3.3.3 Minimum operating bearing clearance shall be as follows:

3.4 Inspection and operational test. The Contractor shall accomplish the following:

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

3.4.2 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.

3.4.3 Inspection and test documentation. Submit a CFR upon completion of inspection and test.

4. NOTES

This section is not applicable to this work item.

24500_MWS_FLT (18 Sep 2008) 65B WLR (24 July 2006) WORK ITEM 12: Remove, Inspect, and Reinstall Propellers

1. SCOPE

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.

($/UNIT)

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

MIL-PRF-16173, 2006, Corrosive Preventive Compound, Solvent Cutback, Cold Application Coast Guard Drawing 65B WD 4400-2, Rev-, 48" dia x 46" Pitch 5 Bladed 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

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 65B WD-4400-2 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 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.

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, 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 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. 48" dia. x 46" pitch 5-blade stainless steel propellers.

56200_JMS_FLT (19 Nov 2008)

65B WLR (15 Jul 2008) WORK ITEM 13: Remove, Inspect and Reinstall Rudder Assemblies

1. SCOPE

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

1.2 Government-furnished property.

None.

2. APPLICABLE DOCUMENTS

Coast Guard Maintenance and Logistics Command Atlantic (MLCA), Standard Specification 0740_STD, 2004 Edition, Welding and Allied Processes Coast Guard Drawing 65B WD 2200-001, Rev-, Rudder and Steering Gear 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):

· 3.3 (Inspections).

3.1.2 Protective measures. The Contractor shall accomplish the following:

· Provide suitable covering to protect all exposed rudder and vessel components against contamination during the performance of the work specified herein.

· Ensure that rudder stock/shaft surfaces are supported in a minimum of two locations, at all times, until reinstallation.

3.1.3 Pre-removal inspection. The Contractor shall visually inspect the condition of each rudder stops and crush blocks for each designated rudder; swing the rudder to check if the stops are properly set.

3.2 Removal. The Contractor shall remove, unship and disassemble each rudder assembly.

3.3 Inspections. The Contractor shall clean all rudder components, and accomplish the below-specified inspections (Submit CIR):

3.3.1 Visual. Visually inspect all components, including but not limited to, rudder stock/shaft and blade surfaces, bearings, bearing housing, seals, and grease passages for signs of excessive wear and other mechanical defects such as nicks, cracks, and corrosion, as applicable.

3.3.2 Measurements. Conduct the following measurements in the presence of Coast Guard Inspector:

· Take and record three sets of readings of each rudder bearing journal outside diameter, and bearing housing dimensions.

· Take and record runout measurements on each rudder stock diameter, and in way of the upper and lower bearings.

· Check the concentricity/alignment between the upper bearing housing and lower bearing housing bores.

3.3.3 Nondestructive. Perform nondestructive inspection of the following components, in accordance with Std Spec 0740_STD, Appendix C:

· Tiller's eyebolts.

· Rudder stock keyways and keys.

· Rudder palm plate welds.

· Coupling bolts.

· Rudder stock palm plate welds.

3.4 Reassembly and reinstallation. Upon completion of all inspections and authorized repairs, the Contractor shall reassemble and reinstall the port and starboard rudder assemblies, using Coast Guard Drawing 65B WD 2200-001 as guidance, and accomplish the following:

3.4.1 Provide new body-bound bolts for the each rudder blade; tac-weld the bolts and nuts to the…