47241 Specification FY26 DD-Rev.0.pdf

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USCG NATIONAL MOTOR LIFE SCHOOL (NMLBS) (47241) FY26 DD REPAIR
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70Z04025QSBPL0011
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This document is a detailed specification for the United States Coast Guard (USCG) 47241 Motor Life Boat (MLB) 47' C-Class Drydock Repairs for Fiscal Year 2026. The specification outlines 42 comprehensive work items for a complete vessel drydock availability, including extensive ultrasonic testing, hull plating inspection, propulsion system maintenance, coating preservation, and various mechanical and structural assessments. Key technical details include performing 100 ultrasonic testing shots, inspecting underwater hull body components, removing and reinstalling main diesel engines and reduction gears, renewing sea valves and bearings, and applying a complete underwater hull preservation coating system.

The specification is designed for a commercial contractor to perform a comprehensive maintenance and repair process at a shipyard facility, with precise requirements for welding, surface preparation, coating application, and inspection procedures. The vessel, a 47-foot Motor Life Boat with specific technical characteristics such as twin 435 SHP diesel engines, aluminum hull construction, and 40,000 lbs full load displacement, requires meticulous preservation and repair work. The document includes extensive references to Coast Guard drawings, technical publications, and standard specifications, and provides detailed tables and figures for guiding the inspection and repair processes, with critical emphasis on underwater hull integrity, coating systems, and mechanical component maintenance.

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70Z04025QSBPL00110002.pdf PDF
70Z04025QSBPL00110001.pdf PDF
70Z04025QSBPL0011.pdf PDF
PPQ 47241.pdf PDF
Schedule of Supplies and Services _ 47241.pdf PDF

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USCG 47241 (MLB 47 C-Class)

SPECIFICATION FOR DRYDOCK REPAIRS

FY2026

Developed By: Timothy Tolliver

(Rev-0, 15 August 2025)

USCG 47241 (MLB-47) DRYDOCK AVAILABILITY FY2026

ii (Rev-0)

TABLE OF CONTENTS

Revisions Record ......................................................................................................................................... iii Consolidated List of References ................................................................................................................... iv Consolidated List of Government-furnished Property ................................................................................. ix Consolidated List of Critical Inspection Items .............................................................................................. x Principal Characteristics ............................................................................................................................... xi General Requirements WORK ITEM 1: General Welding, Provide WORK ITEM 2: Ultrasonic Testing (U/W Body) Shots, Perform WORK ITEM 3: Hull Plating, U/W Body, Inspect WORK ITEM 4: Rub Rail, Inspect – In Place WORK ITEM 5: Bulkhead Penetrations, Frame 5, Inspect WORK ITEM 6: U/W Body, Preserve, 100 percent WORK ITEM 7: Appendages, U/W, Leak Test WORK ITEM 8: Accessible Spaces, Inspect WORK ITEM 9: Tanks, MP Fuel Service, Clean and Inspect WORK ITEM 10: Buoyancy Chamber(s), Clean and Inspect WORK ITEM 11: Watertight Closures, Inspect WORK ITEM 12: Mast, Inspect WORK ITEM 13: Taft Rail and Chines, Air Test WORK ITEM 14: Main Diesel Engine, Remove and Install WORK ITEM 15: Main Diesel Engine to Reduction Gear, Both, Align WORK ITEM 16: Reduction Gear, Remove and Install WORK ITEM 17: Cardan Shaft(S), Remove, Inspect and Reinstall WORK ITEM 18: Propulsion Shaft, Remove, Inspect, and Install WORK ITEM 19: Water Lubricated Bearings, Renew WORK ITEM 20: Propellers, Remove, Inspect, And Reinstall WORK ITEM 21: Main Diesel Engine Exhaust System, Clean and Inspect WORK ITEM 22: Fuel Root Valves, Renew WORK ITEM 23: Electrical Isolation, Perform WORK ITEM 24: Exterior Deck Lights, Inspect WORK ITEM 25: Standard Hoses, Renew WORK ITEM 26: Lazarette Intake Vent, Inspect WORK ITEM 27: Sea Valves, Renew WORK ITEM 28: Sea Strainers, Duplex, All Sizes, Overhaul WORK ITEM 29: Sea Strainers, Simplex, All Sizes, Clean and Inspect WORK ITEM 30: Diesel Tanks, Refuel WORK ITEM 31: Steering System, Inspect WORK ITEM 32: Rudder Assembly, Remove, Inspect and Reinstall WORK ITEM 33: Tow Reel, Overhaul WORK ITEM 34: Windshield Wipers, Remove, Inspect and Install WORK ITEM 35: Hull Identification Markings, Apply WORK ITEM 36: Cathodic Protection / Zincs, Renew WORK ITEM 37: Exterior Non-Slip Pads, Renew WORK ITEM 38: Marine Chemist Services, Provide WORK ITEM 39: Drydock WORK ITEM 40: Temporary Services, Provide WORK ITEM 41: Sea Trial Performance, Support, Provide WORK ITEM 42: Bilge Preservation, Auxiliary Space iii (Rev-0)

REVISIONS RECORD

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

DATE REV# WORK

ITEM#

CHANGES MADE

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

iv (Rev-0)

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 the time of specification writing and during contract execution.

All Coast guard drawings, technical publications, and standard specifications will be provided to contractors by the Coast Guard at an appropriate time, or upon request, free of charge. Other Government documents may be accessed – free of charge – from links located on the SFLC website. Commercial sites provide access to their respective documents.

COAST GUARD DRAWINGS

Coast Guard Drawing 47B-MLB 631-010, Rev G, Hull Visual Identification Coast Guard Drawing 47B-MLB 631-020, Rev L, Paint Schedule Coast Guard Drawing 47B-MLB 633-010, Rev A, Cathodic Protection Coast Guard Drawing 47B-MLB 634-010, Rev E, Deck Covering Coast Guard Drawing 47C MLB 117-090, Web Frame 9 Coast Guard Drawing 47C MLB 120-080, Transverse Bulkhead Frame 8 Coast Guard Drawing 47C MLB 120-100, Transverse Bulkhead Frame 10 Coast Guard Drawing 47C MLB 170-010, Mast and Buoyancy Box Coast Guard Drawing 47C MLB 201-010, Machinery Arrangement Coast Guard Drawing 47C MLB 313-010, Battery Cell Installation Coast Guard Drawing 47C-MLB 110-020, Transom, Structural Details Coast Guard Drawing 47C-MLB 110-201, Transom Coast Guard Drawing 47C-MLB 120-050, Transverse Bulkhead Frame 5 Coast Guard Drawing 47C-MLB 161-010, Struts and Barrels Coast Guard Drawing 47C-MLB 167-010, List of Hatches and Manholes Coast Guard Drawing 47C-MLB 167-020, Door and Hardware List Coast Guard Drawing 47C-MLB 186-010, Towing Arrangement Coast Guard Drawing 47C-MLB 201-010, Machinery Arrangement Coast Guard Drawing 47C-MLB 233-010, Engine Installation Coast Guard Drawing 47C-MLB 233-020, Cummins Engine Spares Coast Guard Drawing 47C-MLB 241-010, Reduction Gear Installation Coast Guard Drawing 47C-MLB 243-010, Engine Propulsion Shafting Coast Guard Drawing 47C-MLB 320-030, Dk Plan/Schem/Wrg/ Blowers Window/Wipers Htrs Coast Guard Drawing 47C-MLB 635-010, Rev C, Hull Insulation Coast Guard Drawing 47C-MLB 852-020, Docking Plan Coast Guard Drawing 47C-MLB-110-010, Shell Plating Coast Guard Drawing 47C-MLB-114-010, Fendering Installation Coast Guard Drawing 47C-MLB-114-020, Spray Rail Plan, Profile and Detail Views Coast Guard Drawing 47C-MLB-245-010, Propellers v (Rev-0)

Coast Guard Drawing 47C-MLB-252-010, Propulsion Control System Coast Guard Drawing 47C-MLB-256-010, Seawater Propulsion Cooling System Coast Guard Drawing 47C-MLB-256-020, HVAC Seawater Cooling Coast Guard Drawing 47C-MLB-259-010, Exhaust System Arrangement and Details Coast Guard Drawing 47C-MLB-261-030, Fuel System Fuel Oil Return System Coast Guard Drawing 47C-MLB-261-040, Fuel System Fuel Oil Supply System Coast Guard Drawing 47C-MLB-262-010, Fuel Fill Vent Sounding Coast Guard Drawing 47C-MLB-262-020, Fuel Tank Overview and Details Coast Guard Drawing 47C-MLB-301-010, Electrical One Line Diagram Coast Guard Drawing 47C-MLB-311-010, Electrical Power Generation System Arrangement Coast Guard Drawing 47C-MLB-311-020, Isolator/Bus Enclosure Assembly Coast Guard Drawing 47C-MLB-332-040, Lighting, Switches, & Foundations Coast Guard Drawing FL-85-002, Rev C, GFE Boat Hot Work Diagrams

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2022, General

Requirements Coast Guard Commandant Instruction (COMDTINST) M10360.3, Jun 2006, Coatings and Colors

Manual Coast Guard Technical Publication (TP) 3355, SWBS 086, Apr 2003, General Information Book, Section

A Coast Guard Technical Publication (TP) 3359, SWBS 241-541, Feb 2016, Manufacturer’s Information

Book – SWBS Group(s) 241-541, SWBS 520, Sea Water Systems Coast Guard Technical Publication (TP) 3359, SWBS 241-541,Feb 2016, Manufacturer’s Information

Book – SWBS Group(s) 241-541, SWBS 520, Sea Water Systems Coast Guard Technical Publication (TP) 4993, SWBS 593, Oct 2011, Nonskid Pads, Peel and Stick

Catalog Coast Guard Technical Publication (TP) SB-E4-0004-V0, SWBS 423, Apr 2024, Electronic Navigation

System-Installation and Operation Instructions.

Coast Guard Technical Publication (TP) SB-H1-0001-V0, SWBS 167, Jun 2024, Watertight Doors and

Forward Hatch-Maintenance and Servicing Instructions.

Coast Guard Technical Publication (TP) SB-H2-0008-V1, SWBS 233, Mar 2024, Main Propulsion

Engine Electronic Control System (ECS)-Model QSC8.3-Troubleshooting & Repair Manual (Volume 1).

Coast Guard Technical Publication (TP) SB-H2-0008-V1, SWBS 233, Mar 2024, Main Propulsion Engine Electronic Control System (ECS)-Model QSC8.3-Troubleshooting & Repair Manual (Volume 2 of 4).

Coast Guard Technical Publication (TP) SB-H2-0008-V1, SWBS 233, Mar 2024, Main Propulsion Engine Electronic Control System (ECS)-Model QSC8.3-Troubleshooting & Repair Manual (Volume 3 of 4).

Coast Guard Technical Publication (TP) SB-H2-0008-V1, SWBS 233, Mar 2024, Main Propulsion Engine Electronic Control System (ECS)-Model QSC8.3-Troubleshooting & Repair Manual (Volume 4 of 4).

Coast Guard Technical Publication (TP) SB-H2-0009-V0, SWBS 423, May 2024, Main Propulsion Engine Fluids Products-Model QSC8.3-Service Manual.

vi (Rev-0)

Coast Guard Technical Publication (TP) SB-H2-0010-V0, SWBS 233, Apr 2024, Main Propulsion Engine-Model QSC8.3-Owner’s Manual.

Coast Guard Technical Publication (TP) SB-H2-0011-V0, SWBS 233, Jun 2024, Main Propulsion Engine-Model QSC8.3-Operation and Maintenance Manual.

Coast Guard Technical Publication (TP) SB-H2-0013-V1, SWBS 233, Jun 2024, Main Propulsion Engine-Model QSC8.3-Troubleshooting & Repair Manual (Volume 1).

Coast Guard Technical Publication (TP) SB-H2-0013-V2, SWBS 233, Jun 2024, Main Propulsion Engine-Model QSC8.3-Troubleshooting & Repair Manual (Volume 2).

Coast Guard Technical Publication (TP) SB-H2-0014-V0, SWBS 545, May 2024, Engine Monitor System-C Command Connect and Connect Premier Marine Panel System-Model PS102-Owner’s Manual.

Coast Guard Technical Publication (TP) SB-H2-0015-V0, SWBS 233, May 2024, Main Propulsion Engine-Model QSC8.3-Spare Parts Catalog.

Coast Guard Technical Publication (TP) SB-H2-0016-V0, SWBS 241, May 2024, ZF Marine Transmission-Operating Instructions, Repair Manual and Spare Parts Catalogue.

Coast Guard Technical Publication (TP) SB-H2-0017-V1, SWBS 252, May 2024, Electronic Throttle and Shift (ETS) and Inboard Joystick Marine Controls-Model MC101-Operations and Maintenance Manual.

Coast Guard Technical Publication (TP) SB-H3-0001-V0, SWBS 314-A, Apr 2024, Power Conversion Equipment Inverter/Charger and DC Converter-Operation Instructions.

Coast Guard Technical Publication (TP) SB-H5-0004-V0, SWBS 582-671, Apr 2024, Harken Industrial Manufacturer's Instruction Book - SWBS Group(s) 582-671, SWBS 582, Section A, Towline Reel, Model IN170

Coast Guard Technical Publications (TP) SB-H5-0001-V0, SWBS 561-A, May 2024, JASTRAM Engineering LTD. Manufacturer’s Instruction Book - SWBS Group(s) 561-1, SWBS 561, Section A, Steering System-Installation & Service Manual

Fire Prevention and Response Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2020, General

Requirements Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), Latest Version, General Requirements Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), 2020, Welding and

Allied Processes Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), 2022, Welding and

Allied Processes Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), Latest Version, Welding and Allied Processes Surface Forces Logistics Center Standard Specification 5550 (SFLC Std Spec 5550), Latest Version, Surface Forces Logistics Center Standard Specification 6310 (SFLC Std Spec 6310), 2020, Requirements for Preservation of Ship Structures Surface Forces Logistics Center Standard Specification 6310 (SFLC Std Spec 6310), 2022, Requirements for Preservation of Ship Structures Surface Forces Logistics Center Standard Specification 6310 (SFLC Std Spec 6310), Latest Version, Requirements for Preservation of Ship Structures Surface Forces Logistics Center Standard Specification 8634 (SFLC Std Spec 8634), 2022, Drydocking vii (Rev-0)

Surface Forces Logistics Center Standard Specification 8635 (SFLC Std Spec 8635), 2022, Temporary Services

OTHER REFERENCES

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

Welding End ASTM International (ASTM) D1330, 2015, Standard Specification for Rubber Sheet Gaskets ASTM International (ASTM) D4138, 2013, Standard Practices for Measurement of Dry Film Thickness of Protective Coating Systems by Destructive, Cross-Sectioning Means ASTM International (ASTM) D5363, 2016, Standard Specification for Anaerobic Single-Component

Adhesives (AN) ASTM International (ASTM) D5363, Apr 2016; Standard Specification for Anaerobic Single-Component

Adhesives (An) Code of Federal Regulations (CFR) Title 29, Part 1915, Jul 2019, Occupational Safety and Health

Standards for Shipyard Employment Code of Federal Regulations (CFR) Title 29, Part 1915, Occupational Safety and Health Standards for

Shipyard Employment Commercial Item Description (CID) A-A-59313, Nov 2003, Thread Compound; Anti-seize, Zinc Dust-

Petrolatum International Standard for Organization (ISO) 484/2, Dec 2015, Shipbuilding - Ship Screw Propeller -

Manufacturing tolerances - Part 2: Propellers of Diameter Between 0.80 and 2.50m, Inclusive International Standard Organization (ISO) 21940-11, Nov 2016, Mechanical Vibration - Rotor Balancing, Procedure and Tolerances for rotors with rigid behavior 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 MIL-A-18001, May 2005, Anodes, Sacrificial Zinc Alloy (Commercially Accepted - ASTM B418) MIL-G-24716A, Apr 1993, Gaskets, Metallic-Flexible Graphite, Spiral Wound MIL-PRF-16173, Oct 2017, Corrosion Prevention Compound, Solvent Cut-Back, Cold-Application MIL-S-45180, 1998, Sealing Compound, Gasket, Hydrocarbon Fluid and Water Resistant MIL-S-45180, 1998; Sealing Compound, Gasket, Hydrocarbon Fluid and Water Resistant Naval Sea Systems Command (NAVSEA) Underwater Ship Husbandry Manuals (UWSH) S0600-AA-

PRO-160, Nov 2011, Chapter 16, Cofferdams NAVSEA Technical Publication T9074-AD-GIB-010/1688, (TP 1688), July 2012, Requirements for

Fabrication, Welding, and Inspection of Submarine Structure Society of Automotive Engineers (SAE) Aerospace Material Specification (AMS) C6183, 2019, Cork and

Rubber Composition Sheet; for Aromatic Fuel and Oil Resistant Gaskets Society of Automotive Engineers (SAE) Aerospace Material Specification (AMS) G-6032, 2020 Grease, Plug Valve, Gasoline and Oil Resistant, NATO Code Number G-363, Metric viii (Rev-0)

Society of Automotive Engineers (SAE) AMS-G-6032, August 2012, Grease, Plug Valve, Gasoline and Oil Resistant, NATO Code Number G-363, Metric

The Society for Protective Coatings (SSPC) Surface Preparation Specification No. 1 (SSPC-SP 1), Apr 2015, Solvent Cleaning

The Society for Protective Coatings (SSPC) Surface Preparation Specification No.1 (SSPC-SP 1), 2016, Solvent Cleaning

The Society for Protective Coatings (SSPC), January 2015, Paint Application Specification No. 2 (PA-2), Procedure for Determining Conformance to Dry Coating Thickness Requirements

The Society for Protective Coatings (SSPC)/NACE International (NACE) Joint Surface Preparation Standard SSPC-WJ-2/NACE WJ-2, Mar 2012, Water Jet Cleaning of Metals-Very Thorough Cleaning

The Society for Protective Coatings SSPC-SP 1, Apr 2015 (E Aug 2016), Solvent Cleaning The Society for Protective Coatings SSPC-SP 2, Nov 1982 (E Nov 2004)-; Hand Tool Cleaning ix (Rev-0)

CONSOLIDATED LIST OF GOVERNMENT-FURNISHED PROPERTY

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

WORK

ITEM

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED

COST

($/UNIT)

14 N Soft Patch Gasket NSN: 5330-01-631-0907 or

PN: 47-SPG-1

2 ea. 185.17

17 N *Seal, Shaft (Complete)

NSN: 2010-01-545-9932 2 ea. 1,990.87

18 N Shaft Seal (3-3/4 Inch) NSN: 2040-01-627-3245 or

PN: 02-212-334

2 ea. 341.50

19 N Upper Rudder Bearing NSN: 3120-01-469-8793 2 ea. 159.37 19 N Lower Rudder Bearing NSN: 3120-01-469-8769 2 ea. 208.93 19 N Shaft Bearing Strut

Tube NSN: 3120-01-366-0506 2 ea. 396.88

19 N Shaft Bearing Stern Tube

NSN: 3120-01-365-9410 2 ea. 290.75

27 N Main Engine R/W supply valve

NSN: 4820-01-544-1003 or

PN: S-135JW2PPPPP2-HSV

2 ea. 1,710.15

27 N HVAC Suction Sea Valve

NSN: 4820-01-274-6687 or

PN: 70-106-01

1 ea. 31.29

34 N *30" Wiper, Windshield Assy

NSN: 2090-01-500-6599 or

PN: 1M-1MLB-480-101

2 ea. 2,775.00

34 N *32" Wiper, Windshield Assy

NSN: 2090-01-500-7937 or

PN: 1M-1MLB-533-101

2 ea. 2,763.18

36 N Zinc, Barrel shape NSN: 5342-01-366-3891 6 ea. 24.03 36 N Zinc, Oblong shape NSN: 5340-01-381-0840 2 ea. 49.40 37 N 47 MLB Non-Slip Pad

Kit NSN: 2040-00-NIB-0342 1 ea. 3,164.21

37 N Edge Sealing Compound

NSN: 8030-01-580-0926 12 ea. 10.90

*Government-loaned property, which shall be returned to the vessel upon completion of the availability.

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

***Government-furnished property, which is to be supplied by either the vessel or the C4IT ServiceCenter x (Rev-0)

CONSOLIDATED LIST OF CRITICAL INSPECTION ITEMS

The following is a list of work items, which contain Critical Inspection reports, which the Contractor must complete within the first 25% of the availability contract period (see SFLC Std Spec 0000, paragraph 3.2.6.5 (Inspection report particulars)):

Work Item Title

2 Ultrasonic Testing (U/W Body) Shots, Perform

4 Rub Rail, Inspect-In Place

6 U/W Body, Preserve, 100 percent

7 Appendages, U/W, Leak Test

8 Accessible Spaces, Inspect

15 Main Diesel Engine to Reduction Gear, Both, Align

16 Reduction Gear, Remove and Install

17 Cardan Shaft(S), Remove, Inspect and Reinstall

18 Propulsion Shaft, Remove, Inspect, and Install

26 Lazarette Intake Vent, Inspect

28 Sea Strainers, Duplex, All Sizes, Overhaul

29 Sea Strainers, Simplex, All Sizes, Clean and Inspect

32 Rudder Assembly, Remove, Inspect and Reinstall xi (Rev-0)

PRINCIPAL CHARACTERISTICS

47' MLB, MOTOR LIFE BOAT

PHYSICAL

Length, overall 47' 11" (W/O Rubrails) - 48' 11" Length, waterline 43” Beam, overall 14' (W/O Rubrails) - 15' Depth 4' 6" Full load displacement 40,000 lbs Full load draft 4' 6" Height of highest projection 18' 6" (fixed height) - 28' 4"

HULL

Hull/superstructure material 5456 Aluminum Frame spacing FR 0 to 8 30" - 31" FR 8 to 10 33" FR 10 to 18 30"

MACHINERY

Engine details (2) DD 6V92TA DDEC III, 435 SHP each @ 2100 RPM Electrical system 24 Volt DC Number of propellers 2 Number of blades 4 Diameter 28" Pitch 36" Shaft- diameter x length (in) 2.50” x 159.0” Shore tie voltage requirements 120 VAC (100A)

PERFORMANCE

Maximum speed at sea state 0 25 knots (2050-2200 RPM) Cruise speed at sea state 2 20 knots (1850 RPM) Max idle speed 6 knots (600 RPM) Fuel capacity (diesel) 394 gal.

Range at cruise, sea state 0 200 NM

1 (Rev-0)

00000_0725_FLT

REC_00000_FLT_Boats @ Commercial Facility (0121)

General Requirements

1. SCOPE

1.1 Intent. This standard specification invokes general requirements for conducting boat repairs performed at a commercial contractor’s facility for Coast Guard vessels.

1.2 Term interchangeability. The terms 'Contractor', 'CG Yard', 'NAVSTA EVERETT', 'shipyard', 'Base', and 'Coast Guard Industrial' are used interchangeably in this specification. Where the primary service provider is Coast Guard personnel, references to contractor and other noted descriptors within this specification or within drawings, publications, SFLC Standard Specifications or other commercial and military references are deemed the same as prime service provider.

2. REFERENCES

COAST GUARD DRAWINGS

None

COAST GUARD PUBLICATIONS

Coast Guard Commandant Instruction (COMDTINST) M10360.3 (series), Coatings and Color Manual Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), Latest Version, General Requirements Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), Latest Version, Welding and Allied Processes Surface Forces Logistics Center Standard Specification 5550 (SFLC Std Spec 5550), Latest Version, Fire Prevention and Response Surface Forces Logistics Center Standard Specification 6310 (SFLC Std Spec 6310), Latest Version, Requirements for Preservation of Ship Structures

OTHER REFERENCES

Code of Federal Regulations (CFR) Title 29, Part 1915, Occupational Safety and Health Standards for

Shipyard Employment NAVSEA Technical Publication T9074-AD-GIB-010/1688, (TP 1688), July 2012, Requirements for

Fabrication, Welding, and Inspection of Submarine Structure

2 (Rev-0)

3. REQUIREMENTS

3.1 General. The Contractor must conform to all requirements specified in SFLC Std Spec 0000 and in this item, as applicable, during the performance of this availability. The requirements in this WI applies to all work under the scope of this contract, whether explicitly stated in all following work items or not, and to all other work subsequently authorized by changes, modifications, or extensions to the contract.

NOTE

NAVSEA drawings listed will be available FOR INSPECTION ONLY from the Coast Guard Port Engineer post-award. SFLC will not redistribute NAVSEA documents.

Contractors can apply to NAVSEA headquarters directly for copies.

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

3.3 Preservation requirements. The Contractor must accomplish all preservation tasks, including touch-ups, in accordance with SFLC Std Spec 6310.

3.3.1 Brand name approval. Ensure that all contractor-furnished coatings are in accordance with SFLC Std Spec 6310, Appendix C (Authorized Coatings for Use on Cutters and Boats).

3.3.2 Coating colors and system color schemes. The Contractor must obtain a written KO authorization to deviate from any coatings required in SFLC Std Spec 6310 Appendix C before work.

3.3.3 In-process quality control measures. The Contractor must abide by all the safety, preservation, and quality control requirements specified in SFLC Std Spec 0000, paragraph 3.2.4.2 (In-process QC measures for “critical-coated surfaces”).

3.3.3.1 Quality control requirements. The Contractor must abide by the following when performing preservation related inspections. The following measurements must be randomly spaced throughout for the purposes of providing a representation of the entire prepared or coated surface.

3.3.3.1.1 Surface profile measurements. One surface profile measurement must be taken for every 200 square feet for the first 1000 square feet; for each additional 500 square feet or less, one profile measurement must be taken.

Profile measurements must be taken in accordance with SFLC Std Spec 6310, paragraph 3.1.8.3 (Surface profile measurements). A “measurement” for surface profile is defined as follows:

• ASTM D4417, Method B: One profile measurement is the average (mean) of 10 individual readings.

• ASTM D4417, Method C: One profile measurement is the average (mean) of 2 individual readings.

3.3.3.1.2 Soluble salt conductivity measurements. 5 conductivity measurements must be taken every 1000 square feet. For submerged (immersed) applications conductivity measurements must not exceed 30 microsiemens/cm.

For non-submerged (non-immersed) applications conductivity measurements must not exceed 70 microsiemens/cm. If a conductivity check fails, clean the surface in accordance with SFLC Std Spec 6310, paragraph 3.1.8.5 (Soluble salt removal).

3.3.3.1.3 Coating thickness measurements. Three area measurements must be taken for the first 1000 square feet;

for each additional 1000 square feet, perform an additional area measurement. A “measurement” for coating thickness is defined as follows:

• SSPC-PA 2 defines an area measurement as 5 separate spot measurements randomly spaced throughout a 100 square foot area.

• SSPC-PA 2 defines a spot measurement as 3 gage readings and each new gage reading the probe must

3 (Rev-0) be moved to a new location within a 1.5-inch diameter circle defining the spot.

3.4 Welding and brazing requirements. The Contractor must perform all welding and allied processes, and NDE in accordance with SFLC Std Spec 0740.

3.4.1 HY-130 material substitution. The Contractor must be aware that HY-130 steel plating is no longer commercially available. For the purpose of performing flight deck repairs on US Coast Guard WMEC-270 “B- Class” cutters, Strenx 900 steel plating has been approved as a replacement for HY-130. Due to the similarity in material properties and weldability of HY-130 and Strenx 900, all welding procedures and welder qualifications for welding Strenx 900 must be the same as those outlined in NAVSEA TP 1688 as applicable for welding HY- 130.

3.4.2 Standard spec modification. For any welding involving HY-130 on the flight deck of WMEC-270 “B-Class” cutters, perform all welding and allied processes, and non-destructive evaluation (NDE) in accordance with NAVSEA TP 1688. The Contractor must be aware that the welding requirements specified in this document take precedence over paragraph 3.3.6 of SFLC Standard Spec 0000 for the purpose of welding involving HY-130.

3.4.3 Approval to weld HY-130. To obtain Coast Guard approval to weld on HY-130 steel for WMEC-270 “B- Class” cutters, the Contractor must provide written Performance Qualification Records (PQR’s) for each process to be used. The PQR’s must be approved by one of the regulatory agencies affirming that the WPS meets the welding requirements of NAVSEA TP 1688. In addition, the Contractor must ensure that all subcontractors, prior to performing welding operations, have qualified procedures by meeting all the requirements set forth in this document.

NOTE

NAVSEA approval is NOT required for welding procedures submitted but the procedures must be reviewed and shown to satisfy the requirements set forth in NAVSEA TP 1688, by a welding regulatory agency. The requirements for welding Strenx 900 are considered the same as those for welding HY-130.

3.5 Environmental protection requirements. The Contractor must adhere to the following environmental protection requirements in accordance with the SFLC Stand Spec 0000:

3.5.1 Contractor operated (non USCG) facilities. The Contractor must provide and maintain environmental protection as defined in SFLC Std Spec 0000 Appendix A, Requirements for Environmental Protection at Contractor Operated (Non USCG) Facilities, as applicable, during the performance of this availability. Contractor must plan for and provide environmental protective measures to control pollution that develops during normal practice, as well as plan for and provide environmental protective measures required to correct conditions that develop during the project. Contractor must comply with applicable Federal, state, and local laws, codes, ordinances, and regulations in their entirety. Any reference to a specific portion of a Federal, state, or local law, code, ordinance, or regulation in this or any other item must not be construed to mean that relief is provided from any other sections of the law, code, ordinance, or regulation.

3.5.2 Test and procedures. The Contractor is required to promptly conduct tests and procedures for the purpose of assessing whether operations are in compliance with applicable Environmental Laws. Analytical work must be done by qualified laboratories; and where required by law, the laboratories must be certified.

3.5.3 Regulatory notifications. The Contractor is responsible for all regulatory notification requirements in accordance with Federal, State and local regulations. In cases where the Coast Guard must also provide public notification, such as storm water permitting, the Contractor must coordinate with the Contracting Officer or COR, and if work is being performed at a USCG Facility, the local Facility Engineer or Engineering Officer. The

4 (Rev-0)

Contractor must submit copies of all regulatory notifications to the Contracting Officer and the local Facility Engineer or Engineering Officer prior to commencement of work activities. Regulatory notifications must be provided for including but not limited to demolition, renovation, National Pollutant Discharge Elimination System (NPDES) defined site work, and remediation of controlled substances such as asbestos, hazardous waste, and lead paint.

3.5.4 Environmental manager. The Contractor must appoint in writing an Environmental Manager for the project, who is responsible for coordinating Contractor compliance with Federal, State, local, and station environmental requirements. The Environmental Manager must ensure compliance with Hazardous Waste Program requirements, including hazardous waste handling, storage, manifesting, and disposal; implement the Contractors’ Environmental Management Plan; ensure that all environmental permits are obtained, maintained, and closed out;

ensure compliance with Storm Water Program Management requirements; ensure compliance with Hazardous Materials including storage, handling, and reporting requirements; as well as coordinate any remediation of regulated substances such as lead, asbestos, and polychlorinated biphenyl (PCB). This may be a collateral position; however the individual must be trained to accomplish the following duties; ensure waste segregation and storage compatibility requirements are met; inspect and manage Satellite Accumulation areas; ensure only authorized personnel add wastes to containers; ensure all Contractor personnel are trained in 40 CFR requirements and individual position requirements; coordinate removal of waste containers; and maintain the Environmental Records binder and required documentation, including environmental permits compliance and close-out.

3.5.5 HW disposal. Contractor must comply with SFLC Std Spec 0000 Appendix A, Requirements For Environmental Protection At Contractor Operated (Non USCG) Facilities for HW disposal.

3.6 Local Policy. The Contractor must refer to site (e.g., Base) Regulations and Instructions for details regarding local policies (e.g., crane services, parking, or facility usage).

3.6.1 Coast Guard turn-over preparation. The Contractor must be aware that, upon arrival, after haul out, and prior to departing the Contractor’s facility, the Coast Guard crew must be allowed to accomplish various tasks in preparation for the turn-over of the boat to the Contractor. The following conditions apply to this paragraph:

3.6.1.1 The Coast Guard requires a maximum of three days at the beginning of the contract, and three days at the end to accomplish various tasks.

3.6.1.2 The Contractor may commence/continue work during these time frames.

3.6.1.3 Coast Guard personnel will disconnect the Electronic Control System and any other electronic equipment, as required to avoid damage to systems arising from hotwork on the vessel during the availability.

3.6.1.4 Coast Guard personnel will remove the transducers after initial haul-out and reinstall prior to re-floating the vessel.

3.6.1.5 The Unit will contact the servicing ESD or ESU to setup removal/installation of the transducer if Unit personnel are unable to accomplish this task.

3.7 SFLC Standard Specification approved changes. Approved updates to the 2022 SFLC Standard Specifications will appear here.

3.7.1 SFLC Standard Specification 5550: Replace paragraph 3.11.3 to state, “Material supporting imminent work shall be brought on the cutter and stored where the work is being performed. Material that appreciably contributes to fire load shall be removed at the end of each work shift when personnel are not present. Trash, debris, and packaging materials shall be promptly removed from the vessel at the end of each work shift and not allowed to

5 (Rev-0) accumulate.” Advance the paragraph numbering of the Fire Prevention and Safety Inspection form to 3.11.4.

4. NOTES

4.1 QA inspection forms. QA inspection forms (QA-1 thru QA-5), required in SFLC Std Spec 6310 to be completed and submitted during preservation of “critical-coated surfaces”, are provided at the end of this document.

6 (Rev-0)

QA-1 - QUALITY ASSURANCE INSPECTION FORM

(PRESERVATION CHECKLIST)

VESSEL NAME HULL # WORK ITEM

WORK ITEM TITLE

LOCATION OF WORK (INCL. FRAME #’S) AREA (SQFT)

CHECKPOINT 1 – COATING SYSTEM COMPLIANCE

Ensure all coatings are in compliance with SFLC Std Spec 6310, 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 mfg.

CHECKPOINT 3 - AMBIENT CONDITIONS

Ensure surface and surrounding temperatures are each between 50 and 90°F for water-containing 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 mfg.

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.

Verify equipment setup, blast media, and surface preparation methods match designated test coupon.

CHECKPOINT 5 - SURFACE PREPARATION

Verify environmental conditions (see CHECKPOINT 3).

Ensure cleanliness of prepared surface is as per specification (i.e.: SSPC SP-11, SP-10, SP WJ-2…).

Verify surface anchor profile using ASTM D4417-Methods B or C against SFLC Std Spec 6310. Conduct profile readings at a minimum of 5 locations for the first 1000-sqft area, and 2 locations for each succeeding 1000-sqft area.

Measure soluble salt conductivity in accordance with SSPC-Guide 15. Conduct 5 measurements per each 1000-sqft area (max. threshold: 70 microsiemens/cm for non-submerged surfaces, 30 microsiemens/cm for submerged surfaces).

CHECKPOINT 6 - PRIMER COAT APPLICATION

Verify environmental conditions (see CHECKPOINT 3).

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

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

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

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

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

Perform visual inspection for holidays and other defects.

CHECKPOINT 7 – STRIPE COAT APPLICATION

Verify environmental conditions (see CHECKPOINT 3).

Ensure overcoating window is as per manufacturer’s instructions.

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

CHECKPOINT 8 – TOP COAT APPLICATION

Verify environmental conditions (see CHECKPOINT 3).

Ensure overcoating window is as per manufacturer’s instructions.

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

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

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

CHECKPOINT 9 – FINAL INSPECTION

Verify final system dry film thickness. Conduct 5 sets of 3 readings for each of the first 3 100-sqft areas, followed by 5 sets of 3 readings for each succeeding 1000-sqft area.

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

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

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

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

CHECKPOINT 10 – RECORD KEEPING

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

NAME OF QP-1/AMPP INSPECTOR SIGNATURE CERT. # DATE / TIME

NAME OF CG REPRESENTATIVE SIGNATURE UNIT DATE/TIME

7 (Rev-0)

QA-2 - QUALITY ASSURANCE INSPECTION FORM

(ENVIRONMENTAL READINGS)

VESSEL NAME HULL # WORK ITEM

# WORK ITEM TITLE

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

DATE

TIME

ACTIVITY (SURFACE

PREPARATION, PRIMER COAT,

BARRIER COAT, TOP COAT,

ETC…)

LOCATION (FRAME &

DECK, RELATION TO

EQUIPMENT, ETC.)

TEMPERATURE % REL.

HUMID-

ITY

DEW

PT.

SURFACE AMBIENT ΔT

| DP -

SURFACE |

8 (Rev-0)

QA-3a - QUALITY ASSURANCE INSPECTION FORM

(SURFACE PROFILE LOG FOR PROFILE MEASUREMENTS IAW ASTM D4417-METHOD-C)

VESSEL NAME HULL # WORK ITEM

LOCATION OF WORK (FRAME REFERENCES) AREA (SQFT)

SURFACE PREPARATION METHOD PROFILE ACHIEVED (MILS)

MIN MAX MEAN

SSPC-SP-10/AMPP No. 2

SSPC-SP WJ-2/AMPP WJ-2

SSPC-SP-3

SSPC-SP-11

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

ABRASIVE MANUFACTURER: ABRASIVE SIEVE SIZE:

PLACE SURFACE PROFILE REPLICA TAPES IN THE SPACES PROVIDED BELOW, TO SERVE AS

PERMANENT QA RECORD. MAINTAIN A SEPARATE LOG FOR EACH LOCATION. WHEN AN AREA IS

DIVIDED INTO SEPARATE SECTIONS, MAINTAIN A SEPARATE LOG FOR EACH SECTION.

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Reading (mils): Reading (mils): Reading (mils):

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Reading (mils): Reading (mils): Reading (mils):

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Reading (mils): Reading (mils): Reading (mils):

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Reading (mils): Reading (mils): Reading (mils):

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Place Surface Profile Replica Tape Here

Reading (mils): Reading (mils): Reading (mils):

MEAN MIL READING (IAW ASTM D4417-METHOD C) FOR ABOVE 15 READINGS:

NAME OF QP-1/AMPP INSPECTOR SIGNATURE CERT. # DATE /

TIME

9 (Rev-0)

QA-3b - QUALITY ASSURANCE INSPECTION FORM

(SURFACE PROFILE LOG FOR PROFILE MEASUREMENTS IAW ASTM D4417-METHOD-B)

VESSEL NAME HULL # WORK ITEM

SURFACE PREPARATION METHOD PROFILE ACHIEVED (MILS)

MIN MAX MEAN

SSPC-SP-10/AMPP No. 2

SSPC-SP WJ-2/AMPP WJ-2

SSPC-SP-3

SSPC-SP-11

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

ABRASIVE MANUFACTURER: ABRASIVE SIEVE SIZE:

RECORD MEASUREMENTS TAKEN IN THE SPACES PROVIDED BELOW, TO SERVE AS PERMANENT QA

RECORD. MAINTAIN SEPARATE LOG FOR EACH LOCATION. WHEN AN AREA IS DIVIDED INTO

SEPARATE SECTIONS, MAINTAIN A SEPARATE LOG FOR EACH SECTION.

Reading (mils):

Reading (mils):

Reading (mils):

Reading (mils):

Reading (mils):

Reading (mils):

Reading (mils):

Reading (mils):

Reading (mils):

Reading (mils):

Mean Mils Reading (IAW ASTM D4417-Method B for above 10 readings (by column):

Mean Reading (mils)

10 (Rev-0)

QA-4 - QUALITY ASSURANCE INSPECTION FORM

(SURFACE SOLUBLE SALT CONDUCTIVITY LOG)

VESSEL NAME HULL # WORK ITEM

SOLUBLE SALT CONDUCTIVITY MEASUREMENTS IAW SSPC-GUIDE 15.

DATE TEST LOCATIONS CONDUCTIVITY (MICROSIEMENS/CM)

11 (Rev-0)

QA-5 - QUALITY ASSURANCE DATA FORM

(COATING THICKNESS)

(Use one sheet for each sequence)

VESSEL NAME HULL # WORK ITEM

# WORK ITEM TITLE

COATING MFG PRODUCT NAME BATC

H #

INDUCTI

ON TIME

COATING SYSTEM

SEQUENCE

(PRIMER/TOUCHUP/3RD

COAT, ETC.)

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

SPOT 1 2 3 4 5 AVERAGE

VALUE

*BASE METAL READING

(BMR)

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

LOCATION (FRAME REFERENCE):

SPOT 1 2 3 4 5 OVERALL AVG. DFT ADJUSTMENTS

1 AVG. BMR DEVIATION

3 BEFORE ADJUSTMENTS AFTER ADJUSTMENTS

AVG.

LOCATION (FRAME REFERENCE):

SPOT 1 2 3 4 5 OVERALL AVG. DFT ADJUSTMENTS

1 AVG. BMR DEVIATION

3 BEFORE ADJUSTMENTS AFTER ADJUSTMENTS

AVG.

LOCATION (FRAME REFERENCE):

SPOT 1 2 3 4 5 OVERALL AVG. DFT ADJUSTMENTS

1 AVG. BMR DEVIATION

3 BEFORE ADJUSTMENTS AFTER ADJUSTMENTS

AVG.

APPLICATION METHOD (AIRLESS,

CONVENTIONAL SPRAY, ROLLED)

AVERAGE DFT

12 (Rev-0)

4.2 Tank and Void Assessment form.

13 (Rev-0)

14 (Rev-0)

07400_AKP_0225_BOAT_FLT

WORK ITEM 1: General Welding, Provide

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to provide general welding as identified in Table 1 (Welding).

TABLE 1 – WELDING

ITEM DESCRIPTION LOCATION APP. SQ. FT.

Perform Clad Welding At COR’s Discretion 48 Square Inches

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing FL-85-002, Rev C, GFE Boat Hot Work Diagrams Coast Guard Drawing 47C-MLB-110-010, Shell Plating

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2022, General Requirements Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), 2022, Welding and Allied Processes Surface Forces Logistics Center Standard Specification 6310 (SFLC Std Spec 6310), 2022, Requirements for Preservation of Ship Structures

OTHER REFERENCES

None

15 (Rev-0)

3.1 General.

3.1.1 CIR.

None.

3.1.2 Tech Rep.

None.

3.1.3 Protective measures. The Contractor must furnish and install all protective measures in accordance with SFLC Std Spec 0000, paragraph 3.3.3 (Vessel component, space, and equipment protection).

3.1.4 Interferences. The Contractor shall handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences).

3.2 Requirement. The Contractor shall provide general welding, including but not limited to, fabrication, brazing, inspection, plate renewal, crack repair, overlay, and associated processes on Coast Guard vessels and equipment in accordance with Coast Guard Drawing FL-85-002 and SFLC Std Spec 0740.

3.3 Bidding. The Contractor shall ensure for bidding purposes this specification will be broke down by the following:

• One linear foot of welding/brazing.

• Four square inches of clad/overlay welding.

• One hour of fabrication.

• One square foot of plate renewal.

TABLE 2 – PLATE TYPE

STEEL PLATE ALUMINUM PLATE

THICKNESS WEIGHT

PER SQFT.

TYPE/GRADE THICKNESS WEIGHT

PER SQFT

TYPE/ALLOY

3/16 (.1875) 7.66 lb 1/4 (.250) 10.21 lb 1/4 (.250) 3.53 lb 5/16 (.3125) 12.76 lb 5/16 (.3125) 4.41 lb 3/8 (.375) 15.31 lb 3/8 (.375) 5.29 lb 1/2 (.500) 20.42 lb 1/2 (.500) 7.06 lb

3.4 Touch-up preservation, general. The Contractor shall prepare and coat all new and disturbed exterior and interior surfaces, as applicable, to match existing adjacent surfaces in accordance with SFLC Std Spec 6310, paragraph 3.1.13 (Touch-ups and minor coating repairs.)

This section is not applicable to this work item.

16 (Rev-0)

11000_AKP_0725_47C

WORK ITEM 2: Ultrasonic Testing (U/W Body) Shots, Perform

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to take 100 Ultrasonic Testing (UT) shots.

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 47C-MLB 110-201, Transom Coast Guard Drawing 47C-MLB-110-010, Shell Plating

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2022, General Requirements Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), 2022, Welding and Allied Processes

OTHER REFERENCES

None

3. REQUIREMENTS

3.1 General.

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

• 3.3 Reporting

3.1.2 Tech Rep.

None.

17 (Rev-0)

3.1.3 Protective measures. The Contractor must furnish and install all protective measures in accordance with SFLC Std Spec 0000, paragraph 3.3.3 (Vessel component, space, and equipment protection).

3.1.4 Interferences. The Contractor must handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences).

3.2 UT measurement. The Contractor must perform a total of 100 UT measurements using Coast Guard Drawings 47C-MLB 110-201 and 47C-MLB 110-010 as a reference and in accordance with SFLC Std Spec 0000 and SFLC Std Spec 0740.

3.2.1 Standard measurements. The Contractor must take 70 standard thickness measurements for the designated locations numbered 1 through 70 between the boot top and keel, (Refer to Figure 1 and Figure 2).

3.2.1.1 The Contractor must record each measured metal thickness in the Standard Underwater (U/W) Body Test Results Report (Refer to Table 1).

3.2.1.2 The Contractor must calculate each percent loss.

3.2.1.3 The Contractor must record each percent loss in the, Standard U/W Body Test Results Report.

3.2.2 Additional measurements. The Contractor must take 30 additional thickness measurements at locations designated by the Coast Guard inspector and numbered 1A through 30A between the boot top and keel, (Refer to Figure 1 and Figure 2).

3.2.2.1 The Contractor must record each measured metal thickness in the Additional U/W Body Test Results Report (Refer to Table 2).

3.2.2.2 The Contractor must calculate each percent loss.

3.2.2.3 The Contractor must record each percent loss in the, Additional U/W Body Test Results Report.

3.2.3 Minimum thickness. The Contractor must record the minimum thickness found for each designated hull section. (A, B, and C) in the Underwater Hull Body Minimum Thickness Test Results Report, (Refer to Table 3).

3.3 Reporting. The Contractor must submit a CIR to include a marked up drawing of Figure 1 and 2 and the completed tables.

4.1 Coast Guard Personnel. The Coast Guard inspector will witness all readings.

18 (Rev-0)

FIGURE 1 - STANDARD UT TESTING LOCATIONS (PORT & STARBOARD)

19 (Rev-0)

FIGURE 2 – STANDARD UT TESTING LOCATIONS (TRANSOM)

20 (Rev-0)

TABLE 1 - STANDARD U/W BODY TEST RESULTS REPORT

DATE: ____________________________

*CALCULATING PERCENT LOSS = 100- (UT READING / DESIGN THICKNESS X 100)

21 (Rev-0)

TABLE 2 - ADDITIONAL U/W BODY TEST RESULTS REPORT

DATE: ____________________________

*CALCULATING PERCENT LOSS = 100- (UT READING / DESIGN THICKNESS X 100)

22 (Rev-0)

TABLE 3 - UNDERWATER HULL BODY MINIMUM THICKNESS TEST RESULTS REPORT

DATE: ______________________

23 (Rev-0)

LOCATIONS MIN. THICKNESS FOUND DESIGN

THICKNESS

MINIMUM

ALLOWED

THICKNESS

AT 25%

LOSS

MINIMUM

ALLOWED

THICKNESS

AT 50%

LOSS

(A) (B) (C)

Port Hull: Boot Top to Keel

.250 .187 .125

Port Hull: Boot Top to Keel

.313 .234 .156

STBD Hull: Boot Top to Keel

.250 .187 .125

STBD Hull: Boot Top to Keel

.313 .234 .156

Transom Hull: Boot Top to Keel

.250 .187 .125

Comments:

24 (Rev-0)

11000_ESD_0723_FLT

REC_11000_UWHIB_FLT_47' MLB (ALL) (0822)

WORK ITEM 3: Hull Plating, U/W Body, Inspect

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to inspect/survey the vessel’s Under Water (U/W) hull plating, including U/W appendages and coating system.

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 47C-MLB 852-020, Docking Plan Coast Guard Drawing 47C-MLB 110-201, Transom Coast Guard Drawing 47C-MLB-110-010, Shell Plating

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2022, General Requirements

OTHER REFERENCES

ASTM International (ASTM) D4138, 2013, Standard Practices for Measurement of Dry Film

Thickness of Protective Coating Systems by Destructive, Cross-Sectioning Means The Society for Protective Coatings (SSPC), January 2015, Paint Application Specification No. 2

(PA-2), Procedure for Determining Conformance to Dry Coating Thickness Requirements

3. REQUIREMENTS

3.1 General.

3.1.1 CIR.

25 (Rev-0)

Not applicable.

3.1.3 Protective measures. The Contractor must furnish and install all protective measures in accordance with SFLC Std Spec 0000, paragraph 3.3.3 (Vessel component, space, and equipment protection).

3.1.4 Interferences. The Contractor must handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences).

3.2 Inspection. The Contractor must accompany the Underwater Hull Inspection Board (UWHIB) in the performance of the below inspection tasks, as applicable, using the drawings listed in Section 2 (References) as guidance. The Contractor must provide the following, to facilitate the UWHIB in assessing the condition of the designated U/W hull components and systems:

• A hull repair supervisor and a marker.

• Temporary staging and other necessary equipment, as applicable, for ensuring safe access to all areas of the U/W hull.

NOTES

1. The COR will convene the UWHIB as soon as possible after the vessel has been dry-docked and before any work (except U/W hull cleaning/wash down) is performed on the U/W hull and appendages.

2. Some of the components and/or systems addressed in this work item may not be applicable to all vessel classes.

3.2.1 Hull plating.

3.2.1.1 The Contractor must inspect the condition of the hull plating (including thruster tunnel plating, as applicable), for the presence of marine growth, deformation, and any evidence of major corrosion or electrolytic action.

3.2.1.2 The Contractor must inspect the hull and keel areas, report on the condition of butt-welded seams, doubler plates, lap seams, and for any signs of damaged plating or unusual waviness in the plating.

3.2.2 Sea chests and all other cooling system intake components. The Contractor must inspect all sea chests, sea beam arrays, tunnels, hull openings, and grates for general appearance, loose, damaged, or missing grates, loose or missing fasteners, condition of sea strainers and lockwire on bolts, marine growth on grating slots, and any obstructions in the openings that might prevent proper suction and discharge of water.

3.2.3 Water jet drive. The Contractor must inspect the water jet drive assembly for signs of corrosion, pitting, erosion, fouling, cracks, dings, and nicks.

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