Attachment 2_Work Specification.pdf

USCGC SAGINAW (WLIC 803)

SPECIFICATION FOR UNPLANNED DRYDOCK REPAIRS

FY2021

Developed By: Kyle P Wood

(Rev-0, 27 May 2021)

USCGC SAGINAW (WLIC-160B) UNPLANNED AVAILABILITY FY2021

ii (Rev-0)

TABLE OF CONTENTS

Revisions Record ......................................................................................................................................... iii Consolidated List of References ................................................................................................................... iv Consolidated List of Government-furnished Property ................................................................................. vi Consolidated List of Critical Inspection Items ........................................................................................... vii Principal Characteristics ............................................................................................................................ viii General Requirements WORK ITEM 1: Propulsion Shaft Seals (Inflatable), Overhaul and Inflatable Renewal WORK ITEM 2: Propulsion Shafting; Remove, Inspect, and Reinstall WORK ITEM 3: Propulsion Shafting, Straighten WORK ITEM 4: Propulsion Shaft Bearings, External, Check Clearances WORK ITEM 5: Propulsion Stern Tube Bearings, Check Clearances WORK ITEM 6: Propulsion Stern Tube Bearings, Renew WORK ITEM 7: Propeller s, Remove, Inspect, and Reinstall WORK ITEM 8: Drydock WORK ITEM 9: Temporary Services, Provide - Tender WORK ITEM 10: Sea Trial Performance, Support, Provide WORK ITEM 11: Propulsion Shafting, Strain Gage Alignment, Inspect WORK ITEM 12: Towing Services, Provide 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 160 WLIC 4301-003, Rev A, Shafting Arrangement and Details

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

Coast Guard Drawing 160B WLIC 0500-001, Rev -, Lines Corrected

Coast Guard Drawing 160B WLIC 0700-003, Rev -, Docking Plan (SAGINAW)

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

Coast Guard Drawing 160B WLIC 2901-004, Rev -, Curves of Form

Coast Guard Drawing 160-WLIC 244-3, Rev B, GA OF 6" Type FSE Maneguard Seal

Coast Guard Drawing 160-WLIC 4400-3, Rev A, Propeller (Supersedes 160-WLIC-4400-001, 4400-002, & 160B-WLIC-4400-001)

COAST GUARD PUBLICATIONS

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

Manual

Coast Guard Commandant Instruction (COMDTINST) M16672.2D, Mar 1999, Navigation Rules, International-Inland

Coast Guard Technical Publication (TP) 4914, 12-NOV-18, FSE Shaft Seal - 2nd Generation

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2018, General

Requirements

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2020, General

Requirements

Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), 2020, Welding and

Allied Processes

Surface Forces Logistics Center Standard Specification 6310 (SFLC Std Spec 6310), 2020, Requirements for Preservation of Ship Structures

Surface Forces Logistics Center Standard Specification 8634 (SFLC Std Spec 8634), 2020, Drydocking

Surface Forces Logistics Center Standard Specification 8635 (SFLC Std Spec 8635), 2020, Temporary

Services

OTHER REFERENCES

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

Manufacturing Tolerances - Part 2: Propellers of Diameter Between 0.80 and 2.50 m, Inclusive v (Rev-0)

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

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

Propulsion Shafting vi (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)

1 N 160ft WLIC Major

Overhaul Kit

H78011-01-9 (C) 2 ea. 4,000.00

2 Y **Propeller shaft NSN: 2010010763907 PN:

160WLIC-4301-003 PIECE-1

1 ea. $32,452.56

6 N **Stern Tube Bearing NSN: 3120-01-046-8511 1 ea. $1865

7 Y **Propeller (right hand)

NSN: 2010-01-037-7295 1 ea. $22,301.20

7 Y **Propeller (left hand) NSN: 2010-01-036-7597 1 ea. $13,926.38

8 Y *Transducer Cover

Plate

N/A 2 ea. 50.00

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

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

***Government-furnished property, which is to be supplied by either the vessel or the C4IT ServiceCenter vii (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

1 Propulsion Shaft Seals (Inflatable), Overhaul and Inflatable Renewal

2 Propulsion Shafting; Remove, Inspect, and Reinstall

4 Propulsion Shaft Bearings, External, Check Clearances

5 Propulsion Stern Tube Bearings, Check Clearances

6 Propulsion Stern Tube Bearings, Renew viii (Rev-0)

PRINCIPAL CHARACTERISTICS

160' WLIC (B-CLASS), INLAND CONSTRUCTION TENDER

PHYSICAL

Length overall 160' 10"

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

Maximum beam 30' 0"

Height of highest fixed projection 40’ 0” (above keel)

Height of highest projection with antenna mast extended

59’ 0” (above keel)

Frame spacing 1' 0"

Full load draft 4' 7-1/2” LCF Draft

Full load displacement 474.73 Long Tons (Fresh water)

Shore tie voltage requirements N/A

HULL

Hull material Steel

MACHINERY

Number of propellers 2

Number of blades per propeller 4

Diameter of propeller 48"

Pitch 44" fixed

RPM 475

Shaft diameter N/A

TANK CAPACITIES

Fuel tanks

Fresh water tanks

Lube oil

1 (Rev-0)

00000_0521_FLT

REC_00000_FLT_Commercial Project @ Contractor’ Facility (0121)

General Requirements

1. SCOPE

1.1 Intent. This standard specification invokes general requirements for conducting vessel 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), 2020, General

Requirements

Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), 2020, Welding and

Allied Processes

Surface Forces Logistics Center Standard Specification 6310 (SFLC Std Spec 6310), 2020, Requirements for Preservation of Ship Structures

OTHER REFERENCES

None

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 of 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.

2 (Rev-0)

3.1.1 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.

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

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 must be 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 must be 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

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, and must be 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

3 (Rev-0) 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. None.

3.7 SFLC Standard Specification approved changes. The Contractor must be aware that the following are approved changes to published SFLC 2020 Edition Standard Specifications and supersede published content:

3.7.1 SFLC Standard Specification 8636. Add missing paragraphs between 3.2 and 3.5 of Std Spec 8636 as follows:

“3.3 Access cut boundaries. The Contractor shall ensure that access cuts comply with the requirements and restrictions detailed in the following and in SFLC Std Spec 0740, and referenced codes.

3.3.1 Location of boundaries. Boundaries of access cuts and closure plates shall, in general, be located between principal ship framing, bulkheads, and other structural members and shall be at least three inches from any of these members or from the toes of other welds. A reduction in this three inch minimum may be approved by the

KO on a case by case basis provided sufficient clearance is maintained for welding and inspection requirements.

The boundaries of access cuts and closure plates should land on existing butts or seams, wherever practicable. The boundaries of prior access cuts should be utilized wherever possible. Boundaries may extend across one or more frames as required for the size of the opening.

3.3.2 Access hole dimensions and arrangements. Holes or access cuts shall be the minimum size necessary and shall be in accordance with the following:

Rectangular access cuts and closure plates welded into primary hull structure shall be at least 12 inches wide in the lesser dimension.

For circular access cuts, the minimum diameter shall be 4T, where T = thickness of the involved structural member, but not less than three inches.

Circular closure plates for access cuts less than two feet in diameter shall be dished 1/16 to 1/8 inch to allow for shrinkage when welded.

Corners of rectangular access cuts and closure plates shall have a minimum radius of 6 inches except when a boundary lands on an existing hull longitudinal seam or transverse butt weld.

Corners at an existing seam or butt shall intersect at a 90 degree angle.

Cuts that are to cross existing butts or seams shall do so at an angle of 90 degrees plus or minus 15 degrees.

In primary hull structure, existing welds forming the boundary of a cut shall be cut back 3 inches beyond the toe of the access cut, except that the cut back shall not intersect or cross an existing weld, frame, or structural member. In which case, the cut back may be reduced to a minimum of two inches in length.

Existing welds crossed by the cut shall not be cut back.

4 (Rev-0)

3.3.3 Primary hull structure. Primary Hull Structure includes the shell, main strength decks, principal longitudinal bulkheads, vertical keel, deep web girders and stiffeners designed to withstand the ship bending stress.

3.3.4 Mechanically fastened joints. Welding closer than six inches to a mechanically fastened joint should be avoided. When access cuts cross or come within six inches of a mechanically fastened joint, the fasteners shall be checked for tightness and if necessary, loose fasteners shall be seal welded or removed, and replaced for a distance of 6 inches beyond the edge of the cut. When a cut crosses a mechanically fastened seam the cut plates shall be repaired using single V welds backed with glass tape (MIL-C-20079) to prevent fusion between the mechanically fastened plates.

3.4 Ship integrity maintenance. The Contractor shall maintain safety and ship integrity by installing temporary guarding and coaming, in addition to weathertight and watertight closures. Remove these temporary fabrications after closing the hull access, and grind surfaces flush in way of removals. For shell plating cuts made at or below the waterline where temporary closures are impractical, the Contractor shall secure each vulnerable compartment and subdivision to minimize potential damage to the extent permitted by the scope and urgency of the work.

3.4.1 Guarding. Install temporary guards in accordance with 29 CFR 1915.73.

3.4.2 Coaming. Ensure that in areas where flammable liquids may be stored, a 4 inch high metal coaming shall be installed on the surface of the deck with tack welds and fully sealed with caulking compound. The coaming shall encircle the access cut in the deck.

3.4.3 Weathertight and contamination closures. Fabricate temporary closures, using fire retardant material, before cutting access openings and install closures whenever access is not in use. Closures shall be:

Constructed to protect the access from inclement weather and entry of contaminants (shall include a coaming or dam on the deck to redirect rain runoff away from the opening).

Fitted with fasteners that permit rapid installation and removal.

Able to support a minimum of 150 pounds per square foot for horizontal deck closures.

Where the access opening is in way of a removed hatch, scuttle or door, the closure shall be configured to allow normal passage of ship’s personnel and equipment.

3.4.4 Watertight closures. Ensure that access openings created four feet or less above the maximum anticipated waterline shall include temporary watertight closures when the vessel is waterborne.

NOTE

NAVSEA S0600-AA-PRO-160/CH16 provides requirements for design, fabrication, and installation of temporary watertight closures.”

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.

5 (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/NACE INSPECTOR SIGNATURE CERT. # DATE / TIME

6 (Rev-0)

QA-2 - QUALITY ASSURANCE INSPECTION FORM

(ENVIRONMENTAL READINGS)

VESSEL NAME HULL #

WORK ITEM

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 |

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

7 (Rev-0)

QA-3A - QUALITY ASSURANCE INSPECTION FORM

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

VESSEL NAME HULL # WORK ITEM

SURFACE PREPARATION METHOD PROFILE ACHIEVED (MILS)

MIN MAX MEAN

SSPC-SP-10/NACE No. 2

SSPC-SP WJ-1/NACE WJ-1

SSPC-SP WJ-2/NACE WJ-2

SSPC-SP WJ-3/NACE WJ-3

SSPC-SP WJ-4/NACE WJ-4

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/NACE INSPECTOR SIGNATURE CERT. # DATE /

TIME

8 (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/NACE No. 2

SSPC-SP WJ-1/NACE WJ-1

SSPC-SP WJ-2/NACE WJ-2

SSPC-SP WJ-3/NACE WJ-3

SSPC-SP WJ-4/NACE WJ-4

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 Reading

(mils)

Mean Reading (mils) IAW ASTM DD4417).

9 (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)

10 (Rev-0)

QA-5 - QUALITY ASSURANCE DATA FORM

(COATING THICKNESS)

(Use one sheet for each sequence)

VESSEL NAME HULL #

WORK ITEM

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.

1 AVG. BMR DEVIATION

1 AVG. BMR DEVIATION

APPLICATION METHOD (AIRLESS,

CONVENTIONAL SPRAY, ROLLED)

AVERAGE DFT

11 (Rev-0)

24301_JPH_0121_160WLIC

WORK ITEM 1: Propulsion Shaft Seals (Inflatable), Overhaul and Inflatable Renewal

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to renew the inflatable seal and to inspect, overhaul, and adjust the mechanical seal on the port side. The seal type is an inboard 6 inch, Type FSE Seal.

1.2 Government-furnished property.

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED

COST

($/UNIT)

N 160ft WLIC Major Overhaul

Kit

H78011-01-9 (C) 2 ea. 4,000.00

2. REFERENCES

COAST GUARD DRAWINGS

Coast Guard Drawing 160-WLIC 244-3, Rev B, GA OF 6" Type FSE Maneguard Seal

COAST GUARD PUBLICATIONS

Coast Guard Technical Publication (TP) 4914, 12-NOV-18, FSE Shaft Seal - 2nd Generation

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2020, General Requirements

Surface Forces Logistics Center Standard Specification 6310 (SFLC Std Spec 6310), 2020, Requirements for Preservation of Ship Structures

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:

3.4 Existing seal mounting concentricity and perpendicularity checks

3.5 Seal Disassembly

12 (Rev-0)

3.1.2 Tech Rep.

3.1.2.1 The Contractor must provide the services of a qualified Tech Rep, who is familiar with the

Wartsila Type F.S.E. Shaft Seal, to do the following, on site:

Advise on manufacturer's proprietary information pertinent to the system.

Assist with proper installation or repair methods.

Ensure compliance with manufacturer's procedures and standards during disassembly, inspection, and reassembly of the system.

3.1.2.2 Ensure that the Tech Rep has a resume of demonstrated experience with the system/equipment stated above.

3.1.2.3 Submit a copy of the Tech Rep’s résumé and a list of references to the to the COR at the Arrival

Conference.

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 Safety. The Contractor must ensure the following safety cautions are observed:

CAUTION

Do not enter or reach into the propeller shaft/stern tube seal area unless the shafting is stopped and locked in position.

CAUTION

Do not rotate shafting while its inflatable seal is inflated.

CAUTION

Confirm that the inflatable seal is not pressurized.

3.3 Equipment removal. The Contractor must refer to CG DWG 160-WLIC 244-3 and accomplish the following tasks .

3.3.1 Ensure that the inflatable seal is deflated.

3.3.2 Disassemble seawater cooling and vent line piping from existing seals as necessary to perform this work item.

3.3.3 Remove or protect any interferences with the work including the deck gratings. Tag all interferences removed to facilitate proper reinstallation. Keep all removed equipment in a location that is clean, dry, and protected.

3.3.4 Measure and record the seals overall length prior to disassembly.

3.4 Existing seal mounting concentricity and perpendicularity checks.

13 (Rev-0)

3.4.1 At the opportune time during disassembly Contractor must check the existing seals to ensure they meet the required concentricity (to shaft) and perpendicularity tolerances as found in TP 3494. Consult with Technical Representative if additional measurement details are required. Technical Representative need not be present or take readings himself.

3.4.2 Submit readings in the form of a CIR within first 25% of the planned availability duration include tolerances, readings taken, and if out of tolerance recommended action to remedy.

3.5 Seal disassembly. The Contractor must accomplish the following tasks.

3.5.1 Disassemble each seal (completely) in accordance with Section 13.4 of the CG Tech Pub 4914.

Thoroughly clean the exterior of the seal. Inspect the seal and the shafting for any defects in accordance with CG Tech Pub 4914. Submit a CIR. Technical Representative need not be present for disassembly.

3.5.2 Clean each component of the seal in accordance with Section 13 of the CG Tech Pub 4914. Wrap the seat and other parts in rubber gasket material and store safely for reassembly and reinstallation.

Inspect all parts for damage, wear, overheating, and/or signs of excessive leakage.

3.5.3 Per CG Tech Pub Section 13 the face and seat have no limitation with regard to age.

NOTE

As regards the face and seat, the following information from the TP-is worth repeating:

“13.2.2 Wear is normally associated with the "face" and "seat" in a radial face type seal. However due to the extreme durability and resistance to abrasion of Silicon Carbide materials used for these components in the F.S.E.

seal, wear will normally only be a factor in the most extreme of circumstances.

Normally a water lubricated seal operating "deep sea" experiences low levels of wear, however, operation in abrasive conditions, may lead to higher wear rates than when operating in clean water.”

And

“13.3 A new seal face or seat should not be run against a previously used seat or face that exhibits any evidence of wear or grooving. One or both interfaces should be replaced where any signs of wear are evident.”

3.5.3.1 Remove the mounting ring (item 3-1) inflatable seal (item 3-6) and support ring. Discard the inflatable seal.

3.6 Seal reassembly. The Contractor must accomplish the following tasks.

3.6.1 Seal Parts Preparation – Unpack and disassemble the seal parts in accordance with Sections 13 and

14 of the CG Tech Pub 4914. Renew and/or machine parts in accordance with the guidance in the technical manual using the GFP Overhaul Parts listed below.

3.6.3 Prepare and inspect the bulkhead/ sterntube mounting surface in accordance with Section 7 of the

CG Tech Pub 4914. Submit a CFR on the condition of the mounting flange.

3.6.4 Seal Installation – In the presence of the CG Inspector, reassemble and install the seal in accordance with Sections 7 and 13 of the CG Tech Pub 4914. As necessary, install new parts in

14 (Rev-0) accordance with the manufacturer’s instructions using the Government furnished seal components listed in the Government Furnished Property table. Contractor must furnish any necessary additional (beyond the listed GFP) consumables such as gaskets not included.

3.6.4.1 Order of Component Assembly, per CG Tech Pub 4914 paragraph 7.3:

1. Adaptor or Spacer (if fitted).

2. Emergency Seal.

3. Mounting Ring.

4. Bellows

5. Bellows Clamp.

6. Face.

7. Face Clamp.

8. Seat Cup.

9. Seat.

10. Seat Shell.

11. Sealing Strip.

12. Drive Ring.

13. Service Connections.

NOTE

The Contractor must be aware that the Government reserves the right to furnish replacement seats to replace seats worn beyond their limits at no additional cost.

3.6.3 Measure and record the seals overall length after reassembly and compare to the pre-disassembly measurement.

3.6.4 In lieu of local overhaul at the drydock facility, the Contractor may elect to ship the entire removed seal together with GFP overhaul kit to an overhaul facility. Prior to exercising this option notify CG

Inspector of the name and location of the overhaul facility that the seals will be sent to. Additional information may be required if overhaul facility is unfamiliar to USCG. This election may be based on a cost comparison to overhaul locally (e.g. if Tech Rep service days are required) vs. factory overhaul (no

Tech Rep associated fees for the factory overhaul work).

3.6.4.1 Furthermore when exercising this option, Contractor must ship removed seals within first two weeks after drydocking, and ensure the overhauled seals will arrive back for installation without delay.

The return date must be advertised and tracked in the related “Production Gantt Bar Chart, Provide”.

3.6.4.2 Regardless where the overhaul occurs local or factory, the Technical Representative must be present for final installation and alignment checks.

3.5.6 Upon completion of all work, perform the Inflatable Seal testing and Operational Seal testing required in paragraphs 3.7 and 3.9 below.

3.7 Piping installation and system connections. The Contractor must accomplish the following tasks:

15 (Rev-0)

3.7.1 Flush clean the seawater cooling piping and strainer with fresh water to remove salt, dirt, and debris in the cooling system. Likewise, use compressed air to clean the piping to the inflatable seal, removing any dirt, debris, and scale.

3.7.2 Reinstall seawater cooling and vent piping in accordance with Section 7.11 of the CG Tech Pub

4914. Ensure that the seal and seawater cooling system are aligned and strain free.

3.7.3 Ensure all pipe joints are tight and leak free.

3.8 Inflatable seal testing. The Contractor must accomplish the following tasks.

3.8.1 Pressure drop testing – Perform the inflatable seal pressure drop test on the inflatable seal in accordance with Section 8.1 of the CG Tech Pub 4914. Submit a CFR.

3.8.2 Main seal Testing – Perform the inflatable seal pressure drop test on the inflatable seal in accordance with Section 8.2 of the CG Tech Pub 4914. Submit a CFR.

3.9 Restoration. The Contractor must accomplish the following tasks:

3.9.1 Inspect and test all components in the presence of the Coast Guard Inspector. Turn over or dispose of unused parts and replaced parts as directed by the CG Inspector.

3.9.2 In the presence of the Coast Guard Inspector, restore all affected equipment and systems to their normal operating condition after satisfactory completion of testing.

3.10 Touch-up preservation. The Contractor must prepare and coat all new and disturbed exterior and interior surfaces to match existing adjacent surfaces, in accordance with Std Spec 6310 as applicable.

3.8 Seal testing. The Contractor must accomplish the following tasks with Technical Representative present:

3.8.1 Test the inflatable seal in accordance with Section 8 of the CG Tech Pub 4914. Submit a CFR.

3.8.2 Test the main seal in accordance with Section 8 of the CG Tech Pub 4914. Submit a CFR.

3.9 Operational test, post repairs. After completion of work, the Contractor must thoroughly test, in the presence of the Coast Guard Inspector and demonstrate all items or shipboard devices that have been disturbed, used, repaired, altered, or installed to be in satisfactory operating condition. Submit a CFR.

3.9.1 Observe the seal under operating conditions. Ensure that there is no excessive heat, excessive leakage (more than 4 quarts per hour), or excessive vibration (more than 0.005” TIR). Check the alignment of the seal flushing lines to ensure that they are strain free.

3.9.2 In the event of any of the above conditions, use Section 12 of the CG Tech Pub 4914 for trouble-shooting. The seal must perform normally in accordance with the OEM Manual after reinstallation.

3.10 Restoration. The Contractor must accomplish the following tasks:

3.10.1 Turn over or dispose of unused parts and replaced parts as directed by the CG Inspector.

16 (Rev-0)

3.10.2 In the presence of the Coast Guard Inspector, restore all affected equipment and systems to their normal operating condition after satisfactory completion of testing.

3.11 Touch-up preservation. The Contractor must prepare and coat all new and disturbed surfaces to match existing adjacent surfaces in accordance with SFLC Std Spec 6310, paragraph 3.1.13 (Touch-ups and minor coating repairs.)

4. NOTES

4.1 Major overhaul kit. The Major Overhaul Kit provided as GFP (Part # H78011-01-9; Kit C) consists of the following components listed in Table 1:

TABLE 1 - 160’, MAJOR OVERHAUL KIT

LINE # DESCRIPTION PART NUMBER QTY UOI

1. Seat (split) H78011-01-1-1 1 ea

2. Seat Cup (split) H78011-01-1-3 1 ea

3. O-cord H78011-01-1-4 1 ea

4. Screw, Seat H78011-01-1-5 2 ea

5. Bellows H78011-01-2-1 1 ea

6. Face (split) H78011-01-2-2 1 ea

7. Screw, Mounting ring H78011-01-3-4 2 ea

8. Inflatable Seal H78011-01-3-6 1 ea

9. Screw, Drive Clamp Ring H78011-01-4-2 2 ea

10 Gasket, Mounting H78011-01-3-8 1 ea

11. Compression Tool H78011-01-CT 1 ea

17 (Rev-0)

24310_ESD_0121_FLT

REC_24310_FLT_160 WLIC (ALL) (1020)

WORK ITEM 2: Propulsion Shafting; Remove, Inspect, and Reinstall

1. SCOPE

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

1.2 Government-furnished property.

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED COST

($/UNIT)

Y **Propeller shaft NSN: 2010010763907

PN: 160WLIC-4301-003 PIECE-1

1 ea. $32,452.56

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

2. REFERENCES

COAST GUARD DRAWINGS

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

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2020, General Requirements

Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), 2020, Welding and Allied Processes

OTHER REFERENCES

None

3. REQUIREMENTS

3.1 General.

18 (Rev-0)

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

3.2.1 Initial shaft coupling alignment check

3.2.3 Inspections

3.5 Government’s right for change out

3.1.2 Tech Rep.

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). Known interferences include, but are not limited to the below-listed:

Deck plates.

Cat walk over the shaft.

Rope guard.

Fairwater.

3.2 Work to be accomplished. Using Coast Guard Drawings 160 WLIC 4301-003 as guidance, as applicable, the Contractor must accomplish the following:

3.2.1 Initial shaft coupling alignment check. Prior to the vessel’s initial drydocking, perform the bore and face alignment between the reduction gear (or Main Motor for Bay Class) output flange and shaft coupling as follows and submit a CIR:

Angular (face-to-face) readings in 4 positions at 90° intervals;

Parallel (coupling OD-to-coupling OD) readings in 12 positions at 30° intervals.

NOTE

The following methods for obtaining coupling/hub alignment measurements are acceptable:

1) Dial indicator to obtain total indicator run-out

2) Straight edge or feeler gage.

3.2.2 Removals.

CAUTION

Be aware historically couplings have been difficult to remove, often requiring added heat to loosen.

Ensure shaft is protected and supported at all bearing journals (minimum), at all times, until reinstallation.

When transporting/moving/lifting, ensure the shaft is supported at all times at a minimum of three locations along the shaft.

Provide proper support to the reduction gear shaft flanges to prevent sagging.

19 (Rev-0)

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

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

Remove the shaft and attached components (as applicable) to a suitable repair facility.

3.2.3 Inspections. Clean the shaft free of all marine growth and surface contaminants, and accomplish the following inspections, as applicable (submit a CIR):

3.2.3.1 Visual inspections. Visually inspect the following components, as applicable, for excessive wear and other mechanical defects such as nicks, cracks, and corrosion, etc. Determine the extent of repairs required for each stern tube assembly, if any.

Shaft surfaces.

Bearings, bearing carriers, epoxy-resin chocking and associated fasteners (as applicable).

All shaft and propeller-associated fasteners.

Stern tube surfaces (including seal flange as applicable).

Couplings.

Stern tube/shaft sealing systems.

3.2.3.2 Complete the following measurements:

NOTE(S)

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

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 must 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.

3.2.3.3 Perform NDE of all bearing sleeves, shaft tapers, coupling bolts, keyways, and weld repaired surfaces in accordance with SFLC Std Spec 0740, Appendix C..

3.3 Reinstallation. The Contractor must reinstall the propeller shaft to its original configuration and accomplish the following, using Coast Guard Drawings 160 WLIC 4301-003, as applicable.

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

3.4 Final shaft coupling alignment check. The Contractor must accomplish the following:

20 (Rev-0)

3.4.1 When the vessel is waterborne, check angular (face gap) alignment. Ensure shaft is restrained from moving aft. Angular misalignment reading must be obtained with the coupling the coupling flanges 1/8” to 3/16” apart (hub registers remain engaged) and recorded at the 12, 3, 6, and 9 O’clock positions. Use a feeler gauge to determine gaps at the four positions. Rotate both shafts 90 degree and take reading again.

Return the shaft to 12 o’clock and take the readings a third time. Compare results to initial readings (Pre-work) and submit a CFR. Generally for proper shaft alignment, each set of readings, the difference between readings at 12 and 6 O’clock and between 3 and 9 O’clock is kept within 0.005 inches.

3.4.2 When the vessel is waterborne, check parallel (rim) alignment. Parallel alignment checks will determines the centerline offsets between reduction gear and propulsion shafts. Parallel misalignment reading must be obtained with the coupling flanges approximately 5/16” apart (coupling register is disengaged) and recorded at the 12, 3, 6, and 9 O’clock positions. Measurements may be taken with a dial indicator set-up, or if that is not available a rough check may be made with a straight edge and feeler gauge technique. Compare results to initial readings (Pre-work) and submit a CFR with the results (a) the amount one shaft is lower than the other (determined from vertical plane readings at 12 and 6 O’clock), and (b) the amount the propeller shaft is inboard or outboard of the reduction gear (determined from horizontal plane readings at 3 and 9 O’clock). Generally for proper shaft alignment, parallel misalignment is kept within 0.005 inches (if dial indicator was used this is 0.010” TIR).

3.5 Government’s right for change out. The Contractor must be aware that the Government reserves the right to furnish a new shaft for installation in place of the existing shaft. If the Government exercises this right, the Contractor must transport the spare shaft to a suitable inspection facility, and perform the inspections specified in paragraph 3.2.3 (Inspections) and submit a CIR. The Contractor must return the removed shaft to the Coast Guard PA as an MTI item.

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

4.1 Fiberglass covering. The Aquamet 19 (stainless steel) shaft does not have a fiberglass covering.

21 (Rev-0)

24350_0121_FLT

REC_24350_FLT_160 WLIC ‘B’ Class (ALL) [tender] (0420)

WORK ITEM 3: Propulsion Shafting, Straighten

1. SCOPE

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

1.2 Government-furnished property.

None.

2. REFERENCES

COAST GUARD DRAWINGS

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

COAST GUARD PUBLICATIONS

Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2020, General Requirements

Surface Forces Logistics Center Standard Specification 0740 (SFLC Std Spec 0740), 2020, Welding and Allied Processes

OTHER REFERENCES

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

Main Propulsion Shafting

3. REQUIREMENTS

3.1 General.

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

None.

3.1.2 Tech Rep.

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).

22 (Rev-0)

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

3.2 Shaft straightening requirements. Based on inspection results obtained from a related shaft work item in this specification package, or provided by the Coast Guard Inspector, the Contractor must straighten the designated shaft, using Coast Guard Drawing 160 WLIC 4301-003 and MIL-STD-2191 for guidance and as specified herein.

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

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

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

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

NOTE

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

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

Submit a CFR including locations and magnitudes of the bend.

3.4 Straightening procedures. The Contractor must straighten the shaft to equal or less than 0.005" total indicator runout, using the cold straightening methods in accordance with MIL-STD-2191, Section

11.2.2.3 and sub-paragraphs.

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

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

Recheck the…