USCGCSturgeonBay2008DDSpecRev3.doc

USCGC STURGEON BAY (WTGB-109)

140 FOOT ICEBREAKING TUG

SPECIFICATIONS FOR DRYDOCK REPAIRS

Developed By:

LOUIS MIKEDIS

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

TABLE OF CONTENTS

Work Item Title Page iiiList of Sketches

Revisions Record iv List of Applicable References v List of Government-furnished Property x List of Critical Inspection Items xi Specification Feedback xii Principal Characteristics xiii General Requirements Welding Repairs Renew Potable Water Pressure Tank and Associated Valves Remove, Inspect, and Reinstall Propeller Shaft Overhaul Shaft Seal Assembly Clean and Inspect Heat Exchangers Renew Transducer and Preserve Transducer Hull Ring Overhaul and Renew Valves Renew Reach Rod Components for Various Valves Inspect and Test Relief Valves Perform Inspection and Maintenance of Steering System Overhaul Steering Pump Motors Overhaul Steering Pumps Remove, Inspect, and Reinstall Rudder Assembly Renew Rudder Bearings Perform Boat Boom Maintenance Renew Vacuum Sewage Piping Renew Various Windows Preserve Various Bilge Surfaces Preserve and Disinfect Potable Water Tanks Preserve Weather Decks Preserve Underwater Body Preserve Sewage and Grey Water Collection and Holding Tanks Reseal Cosmetic Polymeric Deck Covering Systems Renew Galley Refrigerator Provide Temporary Logistics Routine Drydocking Remove, Inspect, and Reinstall Propeller

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.

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/specs/default.htm . 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-D-3134, Sep 1989, Deck Covering Materials

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

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

MIL-PRF-17672, May 1995, Hydraulic Fluid, Petroleum, Inhibited

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

OTHER GOVERNMENT DOCUMENTS, DRAWINGS, AND PUBLICATIONS

DOCUMENTS

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 1001_STD, 2004 Edition, Temporary Hull Accesses

Coast Guard Maintenance and Logistics Command Atlantic (MLCA) Standard Specification 3141_STD, 2004 Edition, Overhaul Electrical Rotating Machines

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 167-001, Rev T, Closures and Window List, All

Coast Guard Drawing 101 WTGB 171-002, Rev T, Mast and Boom

Coast Guard Drawing 101 WTGB 201-001, Rev H, Machinery Arrangement

Coast Guard Drawing 101 WTGB 243-001, Rev S, Shafting and Bearing Arrangement and Details

Coast Guard Drawing 101 WTGB 245-001, Rev B, Propeller and Offsets

Coast Guard Drawing 101 WTGB 245-002, Rev B, Aluminum Pattern One Single Blade

Coast Guard Drawing 101 WTGB 254-002, Alt S, Sea Water Cooling System

Coast Guard Drawing 101 WTGB 256-001, Rev K, S/W Circulating Cooling System Diagram

Coast Guard Drawing 101 WTGB 256-002, Rev S, S/W Circulating Cooling System, Arrangement & Details Coast Guard Drawing 101 WTGB 521-001, Alt H, Fire Main System Diagram

Coast Guard Drawing 101 WTGB 528-001, Rev L, Sanitary and Deck Drains Diagram (All)

Coast Guard Drawing 101 WTGB 528-002, Rev R, Sanitary and Deck Drains A & D (All)

Coast Guard Drawing 101 WTGB 533-001, Rev N, Potable Water System Diagram

Coast Guard Drawing 101 WTGB 533-002, Rev T, Potable Water System Diagram, A & D

Coast Guard Drawing 101 WTGB 533-004, Rev -, Potable Water System, Modifications Incidental to MSA

Coast Guard Drawing 101 WTGB 541-001, Rev J, Fuel Oil Supply System Diagram (All)

Coast Guard Drawing 101 WTGB 561-001, Rev H, Steering System Diag (All)

Coast Guard Drawing 101 WTGB 561-002, Rev R, Hydraulic Steering System A & D (All)

Coast Guard Drawing 101 WTGB 562-001, Rev N, Rudder

Coast Guard Drawing 101 WTGB 562-002, Rev-Q, Rudder Stock Bearing Details Coast Guard Drawing 101 WTGB 651-004, Rev L, Galley, Scullery, A & D Coast Guard Drawing 101 WTGB 801-003, Rev C, Docking Plan Coast Guard Drawing 101 WTGB 801-005, Rev H, General Arrangement, Main Deck and Above Coast Guard Drawing FL 6713-201, Rev B, CRP-V850 Transducer (B-14) Adapter Assembly

NAVSEA Drawing 804-5959214, Rev-, Piping Insulation - Installation Details

PUBLICATIONS

Coast Guard Technical Publication (TP) 3366, Section 583-A, Dec 2005, Boat Davit Hydraulic System

Coast Guard Technical Publication (TP) 3447, 12 Feb 2001, Sect E. SWBS 583, Steering System, Installation and Maintenance

Coast Guard Technical Publication (TP) 3475, 18 Feb 1986, SWBS 235, Section K, Propulsion Electric Equipment Coast Guard Commandant Instruction (COMDTINST) M10360.3 (series) Jun 2006, Coatings and Color Manual WYTM Lineshaft Alignment Analysis, Report No. 7715, 12/27/77

Technical Manual for Partially Split EL Stern Tube Seal, John Crane-Houdaille, Inc., Aug 22, 1986

Raytheon V850 Color Echosounder, 2nd Edition, Mar 1993, Operation Manual NAVSEA SE-000-00-EIM-110, Sep 1995, U.S. Navy EIMB Installation Standards

INDUSTRY STANDARDS

MERGEFIELD "APPDOCS" American National Standards Institute/NSF International (ANSI/NSF) 61, 2005, Drinking Water System Components - Health Effects

American National Standards Institute/American Water Works Association (ANSI/AWWA) C652, 2002, Disinfection of Water-Storage Facilities

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

ASTM International (ASTM) D3951, 1998, Standard Practice for Commercial Packaging ASTM International (ASTM) D4174, Reapproved 1999, Standard Practice for Cleaning, Flushing, and Purification of Petroleum Fluid Hydraulic Systems

ASTM International (ASTM) F683, 2003, Standard Practice for Selection and Application of Thermal Insulation for Piping and Machinery ASTM International (ASTM) F992, 2006, Standard Specification for Valve Label Plates

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

American Society of Mechanical Engineers (ASME), PTC 25, 2001, Pressure Relief Devices

American Water Works Association (AWWA) C652, 2002, Disinfection of Water-Storage Facilities

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 ISO (The International Organization for Standardization), 2953, 15 Apr 1999, Mechanical Vibration, Balancing Machines, Description and Evaluation

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

Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) SP-67, 2003 Edition, Butterfly Valves

Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) SP-72, 1999 Edition, Ball Valves with Flanged or Butt-Welding Ends for General Service

Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), SP-69, 2003, Pipe Hangers and Supports - Selection and Application

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-89, 2003, Pipe Hangers and Supports – Fabrication and Installation Practices

The Society for Protective Coatings (SSPC) Paint Application Specification No. 2 (SSPC-PA Guide 2), 2004, Measurement of Dry Coating Thickness with Magnetic Gages 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)

NSN: 3120-01-082-2885

*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).

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

3 Remove Inspect and reinstall Propeller Shaft 13 Remove Inspect and Reinstall Rudder Assembly

15 Perform Boat Boom Maintenance

Preserve Various Bilge Surfaces

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 Tug

Full Load (Winter) Center of Gravity

Minimum Operating Condition Center of Gravity

Minimum Operating Condition Trimming Moment

NOTE: Values above are for representative tug. Draft and longitudinal lever values provided above are for tugs in fresh water. Longitudinal lever values are provided to adjust tug's design drag of 1.0 feet by the stern.

PROPULSION

PROPELLERS

00000N_FLT (20 Apr 2007)

General Requirements

1. SCOPE

1.1 Scope. 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 extinguishers. The Contractor shall provide portable fire extinguishers.

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.

4. QUALITY ASSURANCE

No additional requirements.

5. NOTES

5.1 Access to COMDTINST M10360.3. The COMDTINST M10360.3 may be accessed at the following URL address: http://www.uscg.mil/ccs/cit/cim/directives/cim/cim_10360_3c.pdf.

5.2 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: ___________________________________ 07400D_FLT (25 Apr 2006) FLT (05 Jan 2004) WORK ITEM 1: Welding Repairs

1. SCOPE

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

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. This work item includes all welding related activities only and does not include interference removal.

4. QUALITY ASSURANCE

No additional requirements.

5. NOTES

This section is not applicable to this work item

S12310O_109(5 Oct 2007)

WORK ITEM 2: Renew Potable Water Pressure Tank and Associated Valves

1. SCOPE

1.1 Scope. This work item describes the requirements for the Contractor to renew the pressure head tank, control switches and valves as designated herein.

2. APPLICABLE DOCUMENTS

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

Coast Guard Drawing 101 WTGB 533-001, Rev N, Potable Water System Diagram

Coast Guard Drawing 101 WTGB 533-002, Rev T, Potable Water System Diagram, A & D

Coast Guard Drawing 101 WTGB 533-004, Rev -, Potable Water System, Modifications Incidental to MSA

NAVSEA Drawing 804-5959214, Rev-, Piping Insulation - Installation Details

American National Standards Institute/American Water Works Association (ANSI/AWWA) C652, 2002, Disinfection of Water-Storage Facilities

ASTM International (ASTM) F683, 2003, Standard Practice for Selection and Application of Thermal Insulation for Piping and Machinery Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) SP-61, 2003 Edition, Pressure Testing Of Steel Valves

Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) SP-67, 2002 Edition, Butterfly Valves

Manufacturers Standardization Society of the Valve and Fittings Industry (MSS) SP-72, 1999 Edition, Ball Valves with Flanged or Butt-Welding Ends for General Service

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

3. REQUIREMENTS

3.1 General.

3.1.1 Related work items. The Contractor shall perform this work item in conjunction with “Preserve and Disinfect Potable Water Tanks” which is a separate work item in this specification package.

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

· Pipe Insulation.

3.1.2 Tank content removal. Remove and dispose of all fluids and/or residues in accordance with all applicable Federal, state, and local regulations.

3.2 Removals. The Contractor shall crop and discard the potable water pressure tank and associated pressure switch.

3.3 Renewals. The Contractor shall refer to Coast Guard Drawing 101 WTGB 533-001, 101 WTGB 533-002 and Coast Guard Drawing 101 WTGB 533-004 and perform the following:

3.3.1 Pressure tank. Furnish, fit and install a pressure tank with the following principal characteristics:

NOTICE!

Refer to Coast Guard Drawing 101 WTGB 533-001, Detail 7-A & 101 WTGB 533-004.

· Tank to be fitted with pressure switch set to cut-in at 25 psi and cut off at 45 psi.

3.4 Renew valves. Renew the following designated valves with commercial-standard type valves, conforming to the applicable standard listed in Table I (Valve Standards).

NOTICE!

Retain numbering plates and install on the new valves. See 3.7 for pressure tank.

3.4.1 Valves designated for renewal.

TABLE I. Valve Standards

3.4.2 Remove. Crop and discard unused valves for old brominator installation at 2-19-3 and 2-19-1 and cap off piping.

3.5 Tank disinfecting. After all other work involving the potable water system and tank closing have been completed, the Contractor shall disinfect and treat the affected potable water tank(s), as necessary to meet or exceed the requirements of AWWA C652. After tank disinfecting; pump all treated water overboard and dispose of in accordance with all Federal, state and local regulations.

3.6 New insulation installation. Install new insulation material over the potable water pressure surfaces, including newly installed pressure tank, associated pipe hangers, valves, fittings, and flanges, in accordance with details in NAVSEA Drawing 804-5959212; select appropriate insulation materials and thicknesses for the application and temperature ranges specified in ASTM F683, Tables S1.1, S1.2, and S1.4. Paint the newly installed insulation system, in accordance with COMDTINST M10360.3, using the system specified for “Insulation Surfaces, Fiberglass Sheet/Closed Cell PVC Foam” in Appendix B (Cutter and Boat Interior Paint Systems).

3.7 Nameplate label. The Contractor shall furnish and install a nameplate label onto newly installed pressure tank. Ensure that the nameplate is made of the melamine type material, with engraved black letters on white background or vise verse; or metal photo type material with black letters photographically sealed onto an aluminum surface. Ensure all Hydrostatic Test data is inscribed to include but not limited to Date, Test Pressure.

4. QUALITY ASSURANCE

4.1 Hydrostatic test. After all work, the Contractor shall hydrostatically test new pressure tank, valves and disturbed piping and components of the potable water system in accordance with Std Spec 0740_STD, Appendix C, “Hydrostatic Test”. Be aware that no leakage or permanent deformation of pressure-containing parts is permissible. Repair all leaks and discrepancies found.

5. NOTES

This section is not applicable to this work item.

24310L_FLT (12 Apr 2007) 140 WTGB 14 May 2007) WORK ITEM 3: Remove, Inspect, and Reinstall Propeller Shaft

1. SCOPE

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

2. APPLICABLE DOCUMENTS

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), Coatings and Color Manual

Coast Guard Drawing 101 WTGB 243-001, Rev S, Shafting and Bearing Arrangement and Details

WYTM Lineshaft Alignment Analysis, Report No. 7715, 12/27/77

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 Related work item. The Contractor shall accomplish this work item in conjunction with "Remove, Inspect and Reinstall Propeller” and “Overhaul Shaft Seal Assembly” which are separate work item of this specification.

3.1.3 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.

· Fairwater.

· Stern tube seal system.

3.2 Work to be accomplished. Using Coast Guard Drawing 101 WTGB 243-001 as guidance, as applicable, the Contractor shall accomplish the following for the propeller shaft:

3.2.1 Removals.

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

· Remove the shaft and attached components and transport 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 (Submit CIR):

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

· Shaft surfaces.

· Bearing surfaces.

· All shaft and propeller associated fasteners.

· Couplings.

· Stern tube/shaft sealing systems.

· Packing ring and glands.

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 Accomplish the following measurements:

· Measure keys and keyways.

· Measure all bearing sleeve or journal diameters.

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

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

3.2.2.4 Inspect the shaft fiberglass covering for porosity as follows:

3.2.2.4.1 Visually inspect the plastic covering for evidence of lack of adhesion, and other defects.

3.2.2.4.2 Conduct a high voltage spark test of the covering at 250 to 300 volts per mil of glass reinforcement (approximately 15,000 volts for a four-ply covering). Pay particular attention to the joining line between sleeves, couplings, and shafts.

3.2.3 Stern tube preservation. Prepare and coat the interior stern tube surfaces in accordance with COMDTINST M10360.3, using the system specified for “U/W Body and Boot-Top, Steel Hulls (up to 7 Years), in Salt Water” in Appendix A (Cutters and Boats Exterior Paint System). After surface preparation and before coating application, do the following:

3.2.3.1 Perform a visual inspection of the prepared stern tube surfaces.

3.2.3.2 Submit a CFR.

3.2.4 Reinstallation. Reinstall the propeller shaft to its original configuration and accomplish the following, using Coast Guard Drawing 101 WTGB 243-001, as applicable.

3.2.4.1 Grind, or hand-stone couplings, to achieve an 80 percent contact.

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.

4. QUALITY ASSURANCE

4.1 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. 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.

5. NOTES

5.1 Government-furnished property.

($/UNIT)

NSN: 3120-01-082-2885

5.2 A temporary support of 600 lbs +/-30 lbs is required at Frame 73, approximately 7 inches from the shaft coupling flange in accordance with the WYTM Motor Alignment Report (Figure 5).

5.3 From paragraph 3.3 of the WYTM Motor Alignment Report:

24330L_140 (04 Apr 2007)

WORK ITEM 4: Overhaul Shaft Seal Assembly

1. SCOPE

1.1 Scope. This work item describes the requirements for the Contractor to overhaul the shaft seal assembly.

2. APPLICABLE DOCUMENTS

Coast Guard Drawing 101 WTGB 243-001, Rev S, Shafting and Bearing Arrangement and Details

Technical Manual for Partially Split EL Stern Tube Seal, John Crane-Houdaille, Inc., Aug 22, 1986

3. REQUIREMENTS

3.1 General.

3.1.1 Technical representative services. The Contractor shall provide an on-site qualified technical representative, familiar with the John Crane Type EL face seal assembly, who shall advise on manufacturer's proprietary information, dimensions, and clearances associated with the system, assist with proper repair methods, and ensure compliance with manufacturer's procedures and standards during disassembly, inspection, and reassembly of the John Crane Type EL face seal assembly. The technical representative shall be a Warsila-Lipps, Inc. technical representative or its licensee.

3.1.2 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.

3.2 Seal overhaul particulars. The Contractor shall accomplish the following tasks, using Coast Guard Drawing 101 WTGB 243-001 and the John Crane Stern Tube Seal Technical Manual as guidance:

3.2.1 Removal. Disassemble and remove the existing shaft seal from the propeller shaft.

3.2.2 Inspections. Accomplish the following inspections, and submit a CFR for each inspection:

3.2.2.1 Coupling. While water-borne and prior to sliding back the propeller shaft perform face to face coupling alignment for bench mark purposes.

3.2.2.2 Float. Measure the total float (thrust).

NOTICES!

1. Fabrication of temporary strong backs maybe required in order to measure the total float (thrust).

2.The maximum allowable float (thrust) should be 0.040 inches.

3.2.2.3 Shaft sleeves. After removal of all the seal components, visually inspect the shaft sleeve surfaces and all the removed seal components for wear, defects and deterioration.

3.2.2.4 Replacement shaft seal kit. Under the supervision of the technical representative, visually inspect the new Government-furnished seal kit for any defects.

3.2.3 Seal component renewal. Refurbish the shaft seal with Government-furnished seal components, under the supervision of the Tech Rep. Ensure the following:

· The compression adapter-tool holes are plugged with renewed plugs, as required.

· The seal is installed with motor armature located in the center of its float (thrust) range.

3.2.4 Seal air test. Do the following:

· Operate the inflatable seal and increase pressure to the manufacturer's recommended pressure.

· Visually inspect all pipe joints, to ensure they are tight.

· With seal inflated, shut off all supply valves, and monitor air leakage. Correct any discrepancy noted.

· Deflate the seal.

3.2.5 Seal water leakage test. After the vessel is waterborne, do the following:

· Operate inflatable shaft seal at normal pressure in accordance with manufacturer's instructions. If the seal is inflated using the ship's installed tank, refill the tank.

· Slowly open the seal drain valve and drain the seal cavity.

· Once seal cavity is drained, measure the seal leakage which shall not exceed one pint per minute. Take corrective action if the leakage is excessive.

· Align the seal water flush line for normal operation.

· Deflate the inflatable seal.

3.3 Face to face coupling alignment. The Contractor shall perform face to face coupling alignment measurement. Allow the seal 24 hours to settle while the vessel is water-borne and re-perform face to face coupling alignment measurements, prior to submitting a condition found report. Submit a CFR.

4. QUALITY ASSURANCE

4.1 Sea trials. The Contractor shall demonstrate proper operation of the shaft seal assembly. Inspect and correct any water leaks, abnormal noise, and any binding caused by shaft seal in normal shaft operation.

5. NOTES

5.1 Government-furnished property.

($/UNIT)

25610U_FLT (10 Oct 2002) 140 WTGB(17 Jul 2007)

WORK ITEM 5: Clean and Inspect Heat Exchangers

1. SCOPE

1.1 Scope. This work item describes the requirements for the Contractor to clean and inspect the following heat exchangers:

2. APPLICABLE DOCUMENTS

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

Coast Guard Drawing 101 WTGB 201-001, Rev H, Machinery Arrangement

Coast Guard Drawing 101 WTGB 256-001, Rev K, S/W Circulating Cooling System Diagram

Coast Guard Drawing 101 WTGB 256-002, Rev S, S/W Circulating Cooling System, Arrangement & Details Coast Guard Technical Publication (TP) 3475, SWBS 235, Section K, Propulsion Electric Equipment

3. REQUIREMENTS

3.1 Protective measures. The Contractor shall take protective measures, which include, but may not be limited to the following:

· Install blanks on the open ends of piping to prevent any contamination or foreign debris from entering the affected systems.

· Ensure that all cleaning equipment or media used in the cleaning process do not cause any damage to heat exchanger components.

3.2 Disassembly. The Contractor shall refer to Coast Guard Drawings listed in section 2 and Coast Guard Technical Publication (TP) 3475 for guidance and disassemble the heat exchangers to the extent necessary to perform all work specified herein.

3.3 Cleaning requirements. The Contractor shall clean the following for each heat exchanger (excluding air side as applicable), free of all debris and surface contaminants:

· Tube sheets.

· Cooler heads.

· Water box interior surfaces.

· Tube interior surfaces.

3.3.1 Cleaning method. Use one of the following methods, to ensure exchanger component surfaces are free of all types of fouling (see 5.1 herein):

· Mechanical method.

· High pressure water jet.

WARNING!

Do not exceed 7,000-psig discharge pressure on high-pressure water jet pumping units, to prevent damage to the heat exchanger tubes. If a component technical manual specifies a lower pressure, do not exceed that pressure.

3.3.2 Contractor-proposed cleaning method. The Contractor may submit an alternative cleaning method, or combination of methods, to the COR for Contracting Officer approval. Submit the alternative method to the COR at least 48 hours before executing this work item.

3.4 Inspection. Upon completion of cleaning, the Contractor shall visually inspect all cleaned heat exchanger surfaces, for excessive deterioration or other defects. Submit a written report of all findings and recommendations to the COR, within 24 hours after inspecting.

3.5 Reassembly. After authorized repairs, if any, the Contractor shall reassemble each heat exchanger; renew all software (seals, gaskets, O-rings) and isolation fittings in accordance with the manufacturer’s specifications.

3.6 Hydrostatic testing. The Contractor shall conduct a hydrostatic test of each side of the heat exchanger(s) as follows:

3.6.1 Tubes. Apply a test pressure of 125 percent of the tubes working pressure for a minimum of 15 minutes. Visually inspect tubes for leaks.

3.6.2 Shell. While maintaining the test pressure on the tubes, apply a test pressure of 125 percent of the shell's working pressure for a minimum of 15 minutes. Visually inspect shell for leaks.

3.6.3 Report. Submit a written report of all findings, to the Contracting Officer, within 24 hours of inspection and testing.

4. QUALITY ASSURANCE

4.1 Quality control requirements. The Contractor shall accomplish the following:

· Ensure that all cleaned surfaces are one hundred percent free of debris and surface contaminants.

· Hydrostatically test the installed cooling system, including all disturbed piping in accordance with Std Spec 0740_STD, Appendix C.

· Demonstrate proper operation of the cooling system, ensuring that the jacket water flows at the maximum operating flow rate.

5. NOTES

This section is not applicable to this work item.

42410O_FLT (25 Jun 2007) 140 WTGB (25 Jun 2007) WORK ITEM 6: Renew Transducer and Preserve Transducer Hull Ring

1. SCOPE

1.1 Scope. This work item describes the requirements for the Contractor to renew the transducer, and preserve the transducer hull ring.

2. APPLICABLE DOCUMENTS

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), Coatings and Color Manual Coast Guard Drawing FL 6713-201, Rev B, CRP-V850 Transducer (B-14) Adapter Assembly

Raytheon V850 Color Echosounder, 2nd Edition, Mar 1993, Operation Manual NAVSEA SE-000-00-EIM-110, Sep 1995, U.S. Navy EIMB Installation Standards

3. REQUIREMENTS

3.1 General.

3.1.1 Related work items. The Contractor shall accomplish this work item in conjunction with the following, which is a separate work item in this specification package:

· "Preserve Underwater Body".

3.1.2 Protective measures. The Contractor shall accomplish the following tasks:

3.1.2.1 Protect all exposed ends of transmission lines, control lines, connectors, and cables from weather, moisture, and physical damage while they are disconnected from the transducer, by one of the approved weatherproofing methods specified in NAVSEA SE-000-00-EIM-110, Installation Standards paragraph 2-20.3 (Weatherproofing Methods).

3.1.2.2 Take all necessary measures to protect transducer from damage during the performance of work specified herein. Inform the COR, in writing, of all damage, if any, that is incurred by the transducer.

3.2 Transducer renewal particulars. The Contractor shall accomplish the following tasks, using the V850 Color Echosounder Technical Manual and Coast Guard Drawing FL-6713-201 as guidance:

3.2.1 Transducer removal. Disconnect and remove the existing V850 Depth Indicating Transducer on the Tender, including associated hull ring adapter. Dispose of the removed transducer and ring adaptor assembly.

3.2.2 New transducer installation. Install new Government-furnished transducer, in place of the removed.

3.2.2.1 Label plate. Following completion of transducer installation, the contractor shall fabricate a 3/4” x 3” x 1/4” aluminum label plate, engraved with 1/4-inch high numbers stating the installation date. Affix a label plate, using a suitable epoxy cement. Ensure that the label plate is visible and readable, without the need to move equipment or cables.

3.2.2.2 Cleaning of radiating surfaces. Thoroughly clean the transducer radiating surfaces with a strong solution of household detergent to remove any oil, dirt, and all other surface contaminants.

3.3 Hull ring preservation. Prior to installing the new transducer, the Contractor shall accomplish the following tasks, in accordance with COMDTINST M10360.3:

3.3.1 Top and inside of hull ring. Prepare and coat the top and the inside of hull ring surfaces using the system specified for “Bilges, Cofferdams, and Forepeaks, Steel”, in Appendix B (Cutters and Boats Interior Painting Systems).

3.3.2 Exterior surfaces. Prepare and coat all exposed/unpainted exterior surfaces in the vicinity of the transducer, with the exception of the transducer radiating surfaces, to match the existing adjacent underwater hull coated surfaces.

4. QUALITY ASSURANCE

4.1 Transducer seal. The Contractor shall inspect the transducer to ensure the outer circumference of the transducer is installed flush to the hull ring, and the transducer cover plate forms a tight seal with the hull ring.

4.1.1 The Contractor shall furnish fit and install a new manhole cover gasket for compartment 4-36-0-Q.

4.2 Post installation tests. After completion of work, the Contractor shall accomplish the following tasks, in the presence of the Coast Guard Inspector:

4.2.1 Water hose test. Perform a water hose test of all affected boundaries in accordance with Std Spec 0740_STD, Appendix C.

4.2.2 Leak repairs. Observe each transducer for leaks during the vessel re-floating process. Repair all leaks detected.

4.2.3 Operational test. Thoroughly test and prove the new transducer to be in satisfactory operating condition (see 5.2 (Equipment operation)). Submit a CFR.

5. NOTES

5.1 Government-furnished property.

($/UNIT)

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

52010A_FLT (28 Feb 2007)

WORK ITEM 7: Overhaul and Renew Valves

1. SCOPE

1.1 Scope. This work item describes the requirements for the Contractor to overhaul and renew designated valves.

1.1.1 Valves designated for overhaul.

Type Size Description Valve No.

Pressure (inches) (psig)

BUTTERFLY

10.0

S/W COOLING

1-SW-2A

BUTTERFLY

10.0

S/W COOLING

1-SW-2B

BUTTERFLY

10.0

S/W COOLING

1-SW-1A

BUTTERFLY

10.0

S/W COOLING

1-SW-1B

3-WAY LESLIE

8.0

RECIRC. VALVE

1-SW-4

3-WAY LESLIE

8.0

RECIRC. VALVE

1-SW-3

BUTTERFLY

8.0

S/W COOLING

1-SW-7A

BUTTERFLY

8.0

S/W COOLING

1-SW-7B

BUTTERFLY

8.0

S/W COOLING

1-SW-8A

BUTTERFLY

8.0

S/W COOLING

1-SW-8B

BUTTERFLY

6.0

#1 MDE S/W

1-PDSW-3

BUTTERFLY

6.0

#1 MDE S/W

1-PDSW-4

BUTTERFLY

6.0

#1 MDE S/W

1-PDSW-3

BUTTERFLY

6.0

#2 MDE S/W

1-PDSW-4

BUTTERFLY

6.0

F.P. SUCTION

FM-3-51-1

BUTTERFLY

6.0

F.P. SUCTION

FM-3-51-2

BUTTERFLY

3.0

BILGE/BALLAST

MD-4-52-2

BUTTERFLY

2.5

BILGE/BALLAST

MD 2-59-2

BUTTERFLY

2.0

S/W COOLING

SW-4-52-1

BUTTERFLY

2.0

OVBD RECIRC

1-SW-6A

BUTTERFLY

2.0

OVBD RECIRC

1-SW-6B

1.1.2 Valves designated for renewal.

NOTICE

Note: 8-inch Butterfly Valves are Government-furnished.

Type Size Description Valve No.

Pressure (inches) (psig)

BUTTERFLY

8.0

BUBBLER AIR

BA 4-47-1

BUTTERFLY

8.0

BUBBLER AIR

BA 4-32-1

BUTTERFLY

8.0

BUBBLER AIR

BA 4-32-2

BUTTERFLY

8.0

BUBBLER AIR

BA 4-47-2

GLOBE

1.5

S/W COOLING

4-56-1

GLOBE

1.5

S/W COOLING

4-56-2

GLOBE

1.0

SHAFT COOLING

1-SW-12

BUTTERFLY

4.0

F.P. BLEED

FM-3-56-10 170

2. APPLICABLE DOCUMENTS

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

Coast Guard Drawing 101 WTGB 521-001, Alt H, Fire Main System Diagram

Coast Guard Commandant Instruction (COMDTINST) M10360.3 (Series), Coatings and Color Manual American Society of Mechanical Engineers (ASME) B16.34, 2004, Valves-Flanged, Threaded, and Welding End

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

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

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