Attachment 11 - R-245-0128 Rev G - 270.pdf

REVISION No. G . CHANGE No. .

REVISION DATE __01/31/2007

TITLE

PROPELLER REPAIR SPECIFICATION

FOR BLADES USED ON 270 FT WMEC VESSELS

R-245-0128

ORGINATED BY CWO D. Heisey DATE 03/93 .

ORGINATOR’S COMMAND Surface Forces Logistics Center (SFLC) .

DEPARTMENT / DIVISION MECPL .

INTERNAL REVIEWER Stephen Twomey DATE 12/13 .

SOWRB APPROVAL DATE .

SPECIFICATION NO. R-245-0128

REVISION G DATED 01/31/2007

PROPELLER REPAIR SPECIFICATION

FOR PROPELLER BLADES USED ON 270 FT WMEC VESSELS

1.0 SCOPE

1.1. This document sets forth the requirements for the receipt, storage, inspection, repair, testing, preservation, packaging, and marking of controllable pitch bronze propeller blades used on 270 FT WMEC Cutters.

1.2. CLASSIFICATION

1.2.1. Propeller Blade Set Types

a. Type 1 – Left Hand (LH) Starboard, P/N 8-350-255 CCW

b. Type 2 – Right Hand (RH) Port, P/N 8-350-254 CW

1.3. GOVERNMENT FURNISHED PROPERTY (GFP) - The listed items are property of and managed by the USCG Surface Forces Logistics

Center, Baltimore MD.

1.3.1. Propeller Blade Set - NSN 2010-01-120-2871, Left Hand

1.3.2. Propeller Blade Set – NSN 2010-01-119-3972, Right Hand

1.4. GOVERNMENT FURNISHED EQUIPMENT (GFE) – The listed items are property of and managed by the USCG Surface Forces Logistics

Center, Baltimore MD.

1.4.1. Dummy Hub, Propeller LH & RH – ACN 2010-01-FST-0069, P/N

DUMMY HUB 901-WMEC-245-007

2.0 APPLICABLE DOCUMENTS

2.1. GENERAL – The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements cited in Sections 3, 4, or 5 of this specification, whether or not they are listed.

2.2. GOVERNMENT DOCUMENTS

2.2.1. SPECIFICATIONS, STANDARDS, PUBLICATIONS, AND HANDBOOKS –

The following specifications, standards, publications, and handbooks form a part of this specification to the extent specified herein. Unless otherwise specified, the versions in effect are those listed in the GSA Index of Federal

Specifications, Standards And Commercial Item Descriptions or the current Department of Defense Index of Specifications

And Standards, (DODISS), and supplements thereto, cited in the solicitation or contract.

2.2.2. SPECIFICATIONS

a. MIL-DTL-2845E(SH) - DATED 18 AUG 1999, Propulsion Systems, Boat and Ship; Main Shafting, Propellers, Bearings, Gauges, Special Tools, and Associated Repair Parts; Preservation, Packaging, Packing and Storage of

2.2.3. STANDARDS

a. MIL-STD-167-1A(SHIPS) - DATED 2 NOV 2005, Mechanical Vibrations of Shipboard Equipment

b. MIL-STD-2035A(SH) - DATED 15 MAY 1995, Nondestructive

Testing Acceptance Criteria

c. DOD-STD-2185(SH) - DATED 28 OCT 1986, Requirements for Repair and Straightening of Bronze Naval

Ship Propellers

d. USCG SFLC Standard Specification 0740, Welding and Allied Processes

2.2.4. OTHER GOVERNMENT DOCUMENTS

a. USCG Drawing No. 901-WMEC-245-004 REV E, Dated 06/30/92, CONTROLLABLE PITCH PROPELLER ESCHER WYSS 270FT WMEC BLADE

AND PALM

b. COAST GUARD SPECIFICATION D-000-0100 - DATED 10/91 REV G 02/06, Bar Coding for USCG Surface Forces Logistics Center

Procured Material

c. NAVSEA TECHNICAL MANUAL, NAVSEA S9245-AR-TSM-010/PROP - DATED 31 MARCH 1997, Technical Manual Marine Propeller

Inspection, Repair and Certification, NSN 0910-LP-012-5880

d. T9074-AS-GIB-010/271 - DATED 16 FEB 1999, Requirements for Nondestructive Testing Methods

2.3. COMMERCIAL DOCUMENTS

2.3.1. American Bureau of Shipping (ABS)

a. Guide for Bronze and Stainless Steel Propeller Castings -

DATED 2007

2.3.2. Society of Automotive Engineers (SAE)

a. SAE-J-448A - DATED June 1963, Surface Texture Standard

b. SAE AMS-T-22085 - DATED 01 June 1999, Tapes, Pressure- Sensitive, Adhesive, Preservation and Sealing–FSC 7510

2.3.3. American National Standards Institute (ANSI)/National

Conference of Standards Laboratories (NCSL)

a. ANSI/NCSL Z540-1-1994 - DATED 1994, General Requirements for Calibration Laboratories and Measuring and Test

Equipment

2.3.4. American Society For Quality Control (ASQC)

a. ANSI/ASQC Q9003-1994 - DATED 1994, Quality Systems - Model for Quality Assurance in Final Inspection and Test

2.4. DOCUMENT AVAILABILITY - To obtain the referenced documents see section 6.1.

2.5. ORDER OF PRECEDENCE - In the event of a conflict between the text of this specification and the references cited herein, the text of this specification takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3.0 REQUIREMENTS

3.1. GENERAL - The Contractor shall provide all labor, equipment and material required to refurbish each controllable pitch propeller (CPP) blade set to a serviceable condition in accordance with MIL-STD-2185(SH).

3.1.1. Serviceable condition is defined as being capable of

functioning and performing in the same manner as an identical new CPP blade set although the set may not have the appearance of newness.

3.2. GOVERNMENT FURNISHED PROPERTY (GFP) and GOVERNMENT FURNISHED EQUIPMENT (GFE) - The Contractor shall provide protective storage for the GFP and GFE listed in sections 1.3 and 1.4 of this specification when not in use, and safe handling when in use.

3.2.1. The storage area shall, at a minimum, be closed on all sides, dry, and locked when unattended.

3.3. MATERIAL - Each CPP blade set is constructed of ABS-4.

3.4. TEST & INSPECTION DATA REQUIREMENTS, RECEIVING INSPECTION

REPORT - Each CPP blade set received by the Contractor shall be inspected upon receipt and an open and inspect repot (OIR) outlining the required repairs and pricing shall be submitted to the Contracting Officer for approval. No further work is authorized until the submitted report is approved.

3.4.1. The OIR shall contain, at a minimum, the following data:

a. Shipping containers (4 total) condition (see section 5.2 of this specification).

b. CPP blade set radius.

c. Pitch of each blade at the following sections - (0.5 thru

0.975 radii).

d. Average pitch of each blade at the following sections - (0.5 thru 0.975 radii).

e. Blade section width of each blade at the 0.4 thru 0.975 radii.

f. Thickness at point of maximum thickness (PMT) of each blade at the 0.4 thru 0.975 radii.

g. CPP blade set track

h. Fairing rod clearances for all blades.

i. Surface finish of all blade surfaces, fillets, and palms.

j. Surface inspection of all blades (Visual and 100 percent dye penetrant examination).

k. Blade bolt and dowel pin hole dimensions for all blades.

l. Center dimension between dowel pin holes for all blades.

m. Bolt hole contact faces for all blades – Parallel measurement dimensions.

n. Blade palm dimensions for all blades.

o. Seal face surface condition/finish for all blades.

p. Estimated time required for repairs of each blade set.

q. Estimated total labor and material cost of repairs for each blade set.

3.4.2. If at any time while performing the OIR or during

authorized repairs that the Contractor believes the CPP blade set may be beyond economical repair, the Contracting

Officer shall be notified immediately and provided a description of the blade set condition to support this assessment.

3.5. SURFACE INSPECTIONS

3.5.1. A visual inspection shall be performed on all exterior surfaces of each CPP blade in accordance with MIL-STD-2035, section 4.

a. All visual defects, even though deemed acceptable, shall be documented on the inspection report.

3.5.2. The Contractor shall perform a dye penetrant inspection over 100 percent of the blade surfaces including the palm top and bottom surfaces, and fillets in accordance with

T9074-AS-GIB-010/271. The acceptance criteria of MIL-STD-

2035 Table IV (Appendix 1 of this specification) shall be used for evaluations.

3.5.3. The Contractor shall document all defects resulting from the visual and dye penetrant inspections. All defects or indications shall be indicated by type and size on visual inspection sheets. A separate visual inspection sheet shall be submitted for each of the following: the blade pressure face, the blade suction face, the fillets, and the palm top and bottom surfaces.

3.6. PROPELLER REPAIRS - Repairs shall be made utilizing the

following methods in declining order of preference:

3.6.1. Straightening

3.6.2. Material removal (grinding)

a. Material removal shall be limited to the minimum required to achieve the repair.

3.6.3. Clad welding

3.7. BOLT HOLE THICKNESS – After final machining, the minimum thickness of each blade bolt hole shall not be less than 95.0 percent of the minimum thickness indicated on the referenced drawing.

3.8. SEALING SURFACE MACHINING – The sealing surface of each CPP blade shall be machined to remove seal wear and restore surface finish. The surface finish shall be 32 micro inches or better unless otherwise stated on the referenced drawing.

3.9. REPAIR TOLERANCES - Each propeller blade shall be repaired within the repair tolerances listed in NAVSEA S9245-AR-TSM-

010/PROP TABLE 6-1, class II (Appendix 2 of this specification) and USCG Drawing No. 901-WMEC-245-004 REV D DATED 11 AUGUST

1992.

3.10. QUALIFICATION OF WELDING PROCEDURES - Welding procedures, welding procedure qualifications, and welder performance qualifications shall be certified in accordance with USCG SFLC

Standard Specification 0740, Welding and Allied Processes.

3.10.1. Welding on the pressure face in the critical area shall not be undertaken without prior approval of the Contracting

Officer.

a. The critical area is described as the pressure face of the blade between the fillet and the .4 radius and starting at the leading edge encompassing 80% of the chord length taken at the 0.4 radius (Reference Figure 1 of DOD-STD-2185(SH)).

3.10.2. Welding repairs of the CPP blades shall meet the

requirements of USCG SFLC Standard Specification 9740, Welding and Allied Processes.

3.10.3. The Contractor shall document all welding performed on the visual inspection sheets for each blade. Each weld shall be dimensionally identified by location, length, width, and depth.

3.10.4. If at any time the American Bureau of Shipping (ABS), Guide for Bronze and Stainless Steel Propeller Castings dated 2007 is accessed for guidance or information, for the purpose of this contract, references to Surveyor or the ABS

Materials Department in Houston shall be construed as the

Contracting Officer for the Coast Guard Surface Forces

Logistics Center.

3.11. SURFACE FINISH - Surfaces of the CPP blades and palms shall be ground fair and polished to the finishes outlined below in accordance with SAE-J-448A.

3.11.1. CPP blade surfaces - 63 micro inches or better.

3.11.2. CPP blade fillets and palms – 125 micro inches or better.

3.12. BALANCING - Each CPP blade set shall be single plane balanced as stated herein. All balancing shall be accomplished by means of balancing equipment, which requires rotation of the work piece. The residual unbalance in each plane of correction shall not exceed the value determined by calculating the following formula: U = 4000W/N2 where:

U = Maximum allowable residual unbalance in oz.-inches

W = Weight of rotating part in pounds

N = Maximum operating speed of unit

Prior to performing any balance tests, the Contractor shall demonstrate the sensitivity of the balance machine using weight determined from the following formula: Ws = 0.1(U)/r where:

Ws = Sensitivity Weight

U = Propeller residual unbalance tolerance r = Radial location of the weight

The addition of this weight shall be easily detected and discernable to the balance machine operator.

3.12.1. Material removed to effect balancing shall be taken from the suction face of the heavy blade(s). Care shall be taken to keep a fair surface.

a. The area from which metal is taken shall not come within 10 percent of the chord length to the leading or trailing edges.

3.12.2. The actual amount of unbalance for each CPP blade set shall be documented on each Final Inspection Report.

3.12.3. To facilitate balancing and dimensional inspections of each CPP blade set, A Dummy Hub and mandrel assembly will be furnished to the Contractor by the Government under stock number 2010-01-FST-0069. Centers of the propeller shall be

90 degrees apart, plus or minus 15 minutes of circular arc.

3.12.4. Prior to use, the Contractor shall inspect and check the Dummy Hub for squareness, correct dowel pin locations per the referenced drawing, and balance to the requirements of section 3.12 of this specification. The Coast Guard Quality

Assurance Representative will be present during this inspection.

3.12.5. The Dummy Hub mandrel shall not exceed a total indicated run-out (TIR) of .001 inches.

3.12.6. The CPP blades shall be balanced as a set of 4 and marked to ensure reassembly in the same position in which they were balanced.

3.12.7. Each CPP blade set shall be numbered 1 through 4 and

installed on the Dummy Hub consecutively and counter to the direction of rotation.

3.12.8. After initial balance, the CPP blades shall be removed and rotated 90 degrees on the Dummy Hub. The balance shall then be re-checked to ensure that any corrections indicated do not include any effects of unbalance or bending of the Dummy

Hub Assembly.

3.13. TEST & INSPECTION DATA REQUIREMENTS, FINAL INSPECTION REPORT -

After completion of all welding and repairs, the Contractor shall perform final dimensional, balancing, and visual and dye penetrant surface inspections for each CPP blade set. The

Final Inspection Report shall represent the final post repair condition of each CPP blade set.

3.13.1. The Final Inspection Report shall be submitted to the Contracting Officer for review. If this report is determined to be acceptable, the Contracting Officer will authorize SFLC’s Quality Assurance Branch to schedule final inspections/tests outlined in section 4.4 of this specification.

3.13.2. The Final Inspection Report shall contain, at a minimum, the following data.

a. CPP blade set radius.

b. Pitch of each blade at the following sections - (0.5 thru

0.975 radii).

c. Average pitch of each blade at the following sections - (0.5 thru 0.975 radii).

d. Blade section width of each blade at the following design radii - (0.4 thru 0.975 radius).

e. Thickness at point of maximum thickness (PMT) of each blade at the 0.4 thru 0.975 radii.

f. CPP blade set track

g. Fairing rod clearances for all blades.

h. Surface finish of all blade surfaces, fillets and palms.

i. Surface inspection of all blades (Visual and 100 percent dye penetrant examination).

j. Blade bolt and dowel pin hole dimensions for all blades.

k. Center dimension between dowel pin holes for all blades.

l. Bolt hole contact faces for all blades – Parallel measurement dimensions.

m. Palm dimensions for all blades.

n. Seal face surface finish for all blades.

o. Balancing data as required in section 3.12.

3.13.3. Areas of each CPP blade where dimensions were taken and recorded on the OIR, but were not affected by follow-on repair work, do not have to be re-inspected. However, the

Final Inspection Report shall include all applicable pre-repair and post repair data.

3.14. STAMPING - Each CPP blade shall be stamped with the listed information, or the presently stamped information shall be changed if incorrect.

3.14.1. The stampings shall be at least 1/4” high legible

printing, or the same height of the existing stamping if only corrected.

3.14.2. The stampings shall include at a minimum the items listed.

a. Company Name

b. Date of Repair Completion

c. Blade Number

d. Stress Relieved Date (if applicable)

e. Blade Set Serial Number (supplied by the Contracting Officer if none exists)

f. Direction of Rotation (LH or RH)

g. Type of Material

h. Weight

3.15. NOTIFICATIONS & INSPECTIONS - The Contractor shall be

responsible for notifying the Contracting Officer at least ten

(10) calendar days prior to any inspections or monitored testing required herein.

3.16. PHOTO DOCUMENTATION – The Contractor shall provide Photo Documentation to the Contracting Officer as part of the OIR, during in-process welding repairs (if applicable), after final inspection, and during preservation, packaging, and packing.

Each photograph shall include the CPP blade serial number, blade number, and date the photograph was taken. The color photographs shall be taken with a digital camera and the images provided electronically in “jpg format” to the Contracting

Officer during the overhaul phases outlined below.

3.16.1. PHOTO DOCUMENTATION PHASES:

a. During initial receipt of the CPP blades with photographs showing the suction face, pressure face, fillets, and palms of each blade with two photographs of the shipping container taken at 90 degrees apart.

b. Prior to the repair of each CPP blade with close-up views showing any damage, erosion, corrosion that will affect cost or repair cycle time.

c. During the pre-repair dye penetrant inspection showing any porosity or cracks.

d. During repair of a CPP blade whenever significant cropping, welding, or machining of the seal surface is required.

e. After final inspection prior to preservation showing surface texture/finish of each blade suction face, pressure face, fillet, blade palm and seal face surface. Stamped markings shall also be photographed.

f. Prior to inserting each CPP blade in the shipping container, showing strippable compound application and sheet metal blade edge protectors installed.

g. Prior to shipment, showing container markings.

4.0 QUALITY ASSURANCE (Q.A.)

4.1. GENERAL - The Contractor shall provide and maintain an

inspection system which shall ensure each item offered to the

Government for acceptance conforms to contract requirements.

The system shall be documented and meet the requirements of

ANSI/ASQC-Q9003-1994.

4.2. RESPONSIBILITY FOR INSPECTION - The Contractor is responsible for the performance of all inspection requirements as specified herein. The Contractor may use his own or any other facility for the performance of the inspections and tests, unless disapproved by the Government. The Government reserves the right to perform or witness any of the inspections and tests set forth in this specification at any time.

4.3. RESPONSIBILITY FOR COMPLIANCE - All items shall meet the provisions of Sections 3 & 5. The inspections set forth in this specification shall become part of the Contractor’s overall inspection system or quality program. The absence of any inspection requirement in the specification shall not relieve the Contractor of the responsibility of assuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract.

Sampling for quality conformance does not authorize submission of known defective material (either indicated or actual) nor does it commit the Government to acceptance of defective material.

4.4. INSPECTIONS/TESTS - The inspections and tests required herein are the minimum necessary and are not intended to replace any controls, examinations or tests normally employed by the

Contractor to assure the quality of the product. The following are required and will be validated by a Government Quality

Assurance Representative.

4.4.1. Dimensional inspections outlined in section 3.13.2.a, b, c, d, e, f, g, j, k, l, and n of this specification.

4.4.2. Surface inspections outlined in sections 3.5, 3.8, and 3.11 of this specification.

4.4.3. Balance checks outlined in section 3.12 of this

4.4.4. CPP blade stamping outlined in section 3.14 of this

4.5. TEST AND INSPECTION REPORTS - One copy of any inspection, test or tolerance check report shall be sent to the Contracting

Officer.

4.5.1. A copy of any test, inspection or tolerance check report shall also be turned over to the Coast Guard Quality

Assurance Representative upon arrival at the Contractor’s facility.

4.5.2. All out of tolerance readings on any inspection, test or tolerance check report submitted to any Coast Guard representative shall be easily identified through highlighting, color coding, shading, circling, or other prominent marking.

4.6. CALIBRATION SYSTEM - The Contractor as well as any

subcontractors shall be required to maintain a test equipment calibration program in compliance with ANSI/NCSL Z540-1. The program shall be documented and traceable to the National

Institute of Standards (NIST).

4.6.1. The calibration system records shall be maintained for inspection for the duration of any contract referencing this

4.7. PACKING INSPECTION - The Contracting Officer’s Quality

Assurance Representative shall be notified prior to the preservation, packaging, packing, and marking of the completed units in accordance with section 3.15.

5.0 PRESERVATION, PACKAGING, PACKING, & MARKING

5.1. PRESERVATION & PACKAGING

5.1.1. Prior to preservation, each CPP blade shall be cleaned by any process or combination of processes, which will accomplish thorough cleaning without damage to the blade.

a. After cleaning, tape conforming to SAE AMS-T-22085 and strippable compound preservative shall be applied to each

CPP blade in accordance with MIL-DTL-2845E paragraph

3.14.1.3.

b. After the application of strippable compound, galvanized sheet metal blade edge protectors shall be installed, using corrosion resistant hardware, in accordance with MIL-DTL-

2845, paragraph 3.14.1.4.

c. A plywood cover shall be used to cover the bottom side of the palm of each CPP blade to protect the seal area during shipment and storage. This cover shall be attached using bolts through the blade bolt holes and plywood washers in contact with blade machined surfaces.

5.1.2. The GFE supplied Dummy Hub shall be preserved as it was received for return to the Coast Guard.

5.2. PACKING - Each CPP blade shall be individually packed in accordance with MIL-DTL-2845E paragraph 3.14.2.1, Figure 3.

5.2.1. If the CPP blade bolt holes are used to secure the blade, care shall be taken to protect these holes from damage.

5.2.2. If the Contractor determines that a shipping container complies with MIL-STD-2845E(SH), that container shall be reused.

5.2.3. Upon completion of the contract, the GFE supplied Dummy Hub shall be repacked in its original shipping container.

5.2.4. In the event a new shipping container is required, the Contractor shall notify the Contracting Officer within fifteen days after receipt of the GFP and/or GFE.

5.3. MARKING - Each preserved, and packed CPP blade or GFE shall be marked in the upper left-hand side of the two longest sides, (two opposite sides if square) of each container. The lettering shall be black painted stencil and permanently affixed to each container. The lettering shall be at least 1” high, and be applied on a highly contrasting painted background.

5.3.1. This marking shall consist of the STOCK NUMBER, ITEM NAME, PART NUMBER, BLADE SERIAL NUMBER, BLADE SET SERIAL NUMBERS, BLADE NUMBER, BOX ___OF 4, CONTRACT NUMBER, DELIVERY ORDER

NUMBER, SHIPPING WEIGHT (in lbs.,), condition code i.e.

CONDITION A, QUANTITY and UNIT OF ISSUE (1) SE and the words

COAST GUARD SFLC MATERIAL followed by the words REUSABLE

CONTAINER DO NOT DESTROY.

5.3.2. The shipping container for the GFE supplied Dummy Hub shall be marked as indicated in section 5.3.5.c.

5.3.3. Each CPP blade container shall have the “BLADE SET”

marking, which shall also include the blade number and marking indicating this is box ___OF 4.

5.3.4. Each CPP blade container shall have the other three blade serial numbers of the set listed. This marking shall be worded as follows: THE OTHER THREE BLADE SERIAL NUMBERS THAT

MAKE UP THIS SET INCLUDE (List the serial numbers).

5.3.5. See below for marking lay out.

a. Type 1 – BLADE SET, LEFT HAND

STOCK NUMBER 2010-01-120-2871

ITEM NAME BLADE SET LH, PROPELLER

PART NUMBER 8-350-255 CCW

BLADE SERIAL NUMBER As marked on blade

BLADE SET SERIAL NUMBERS List serial numbers of the three other blades that make up this set

BLADE NUMBER As received or as balanced

BOX___OF 4

SHIPPING WEIGHT As determined by Contractor

CONTRACT NUMBER As indicated on the contract

DELIVERY ORDER NUMBER As indicated on the delivery order

CONDITION CODE CONDITION A

QUANTITY & UNIT OF ISSUE 1 - SET

COAST GUARD SFLC MATERIAL

REUSABLE CONTAINER DO NOT DESTROY

b. Type 2 – BLADE SET, RIGHT HAND

STOCK NUMBER 2010-01-119-3972

ITEM NAME BLADE SET RH, PROPELLER

PART NUMBER 8-350-254 CW

BLADE SERIAL NUMBER As marked on blade

BLADE SET SERIAL NUMBERS List serial numbers of the three other blades that make up this set

BLADE NUMBER As received or as balanced

BOX___OF 4

SHIPPING WEIGHT As determined by Contractor

CONTRACT NUMBER As indicated on the contract

DELIVERY ORDER NUMBER As indicated on the delivery order

CONDITION CODE CONDITION A

QUANTITY & UNIT OF ISSUE 1 – SET

c. Dummy Hub - DUMMY HUB RH & LH

STOCK NUMBER 2010-01-FST-0069

ITEM NAME HUB, DUMMY RH & LH

PART NUMBER 901-WMEC-245-007

SHIPPING WEIGHT As determined by Contractor

CONTRACT NUMBER As indicated on the contract

CONDITION CODE CONDITION A

QUANTITY & UNIT OF ISSUE 1 - EA

5.4. BAR CODING - Bar code labels shall be supplied on all CLIN’s except for those that require data submissions only.

5.4.1. All bar coded labels shall be in accordance with SFLC

specification D-000-0100 REV F, DATED 06/00.

a. The actual labels shall be Type “V”, Grade “A”, Style “2”, Composition “b” with plastic laminate.

b. Each label shall contain encoded data for the Stock Number.

6.0 NOTES

6.1. GOVERNMENT & COMMERCIAL DOCUMENT SOURCES

6.1.1. GOVERNMENT DOCUMENTS

a. Department of Defense Single Stock Point (DODSSP) Building #4, Section D

700 Robbins Avenue

Philadelphia, PA 19111-5094

PH 215-697-2667/2179

FAX 215-697-1462

b. DOD & Navy Publications and Forms (Other Than DODSSP) Naval Publication and Forms Center

5801 Tabor Ave.

Philadelphia, PA 19120

PH 215-697-2000

6.1.2. COMMERCIAL DOCUMENTS

a. American Bureau of Shipping (ABS) ABS Plaza

16855 Northchase Drive

Houston, TX 77060

PH 281-877-6000,

FAX 281-877-6001

www.eagle.org

b. Society of Automotive Engineers, Inc. (SAE) 400 Commonwealth Drive

Warrendale, PA 15096

PH 412-776-4841

FAX 412-776-5760

www.sae.org

c. American Society For Quality Control (ASQC) 611 East Wisconsin Avenue

Milwaukee, Wisconsin 53202

PH 414-272-8575,

FAX 414-272-1734

d. American National Standards Institute (ANSI) 25 West 42nd Street

(Between 5th and 6th Avenues) 4th Floor

New York, NY 10018

PH 212—642-4900

FAX 212-398-0023

www.ansi.org

6.1.3. OTHER GOVERNMENT DOCUMENTS

a. USCG Surface Forces Logistics Center 707 E. Ordnance Road

Baltimore, MD. 21226-5000

Attn: TIMB http://www.eagle.org/ http://www.sae.org/ http://www.ansi.org/

TABLE IV. Acceptance standards for inspection of bronze propellers.9

Location of discontinuities

Type of discontinuities2

Maximum acceptable discontinuity size (inches)1'3

Discontinuity acceptance standards Allowable areas of concentration

6 x 6 Area of concentration6.7

Maximum No.8.9

Maximum spacing between aligned discontinuities."

CASTINGS

A band located around the periphery of each blade on both the pressure and suction faces with a width equal to

10 percent of the width of the blade measured at the 0.

radius, but not to exceed

6-inches; and an area mea-sured from (and including) the hub fillet to 0.4 radius on the pressure face only.

Non-linear 1/8

D

5 percent of propeller surface area with distribution limited by a maximum of 5 percent for each blade surface.

Linear 1/8 6 4D

The remaining surfaces of the blades.

Non-linear 1/8 20

D

Linear 1/4 8 4D

Hub outside diameter (OD) Non-linear 1/4 15 D

Linear 3/8 6 4D or 1-inch, whichever is less

WELDMENTS

Al! surfaces Non-linear 1/16 12 4D 5 percent of total weld area.

Linear 0 0

See footnotes on following page.

APPENDIX 1 (Page 1 of 2)

TABLE IV FOOTNOTES

1. Liquid penetrant inspection shall be performed as an aid to visual inspection in locating discontinuities. Only discontinuity size shall be used as a basis for rejection.

2. A linear discontinuity is one in which the length is greater than or equal to three times the width.

3. Any linear discontinuity over 1/16 inch in length located within a peripheral band 1 inch wide;

and whose major dimension is oriented normal to the blade edge shall be repaired.

4. Maximum spacing is the distance separating two adjacent discontinuities in terms of the major dimension of the larger discontinuity (D). Aligned non-linear discontinuities shall consist of four or more discontinuities in a line. Aligned linear discontinuities shall consist of two or more discontinuities whose major dimensions are oriented in a line. However, when the total length of the aligned discontinuities does not exceed the maximum length permitted for a single discontinuity, these aligned discontinuities shall be considered as one discontinuity, and shall not be cause for rejection.

5. When the major dimension of clustered discontinuities does not exceed the maximum size permitted for a single discontinuity, these clustered discontinuities shall be considered as one discontinuity and shall not be cause for rejection. Scattered discontinuities, separated from the cluster by 1/8 inch or more shall not be considered as part of the cluster..

6. Randomly dispersed casting discontinuities whose major dimensions are 1/16 inch or less shall not be counted in determining total number of discontinuities within an area of concentration.

7. More than six discontinuities whose major dimensions are greater than 3/32 inch in any 6 by

6-inch area of the propeller surface constitute an area of concentration. Each area of concentration shall be separated from an adjacent area of concentration by a minimum of 18 inches.

8. The total number of non-linear discontinuities may be increased to the combined total, or part thereof, represented by the absence of linear discontinuities.

9. For used propellers not originally inspected to the requirements of this standard, the allowable number of discontinuities in each area of concentration may be increased 15 percent for each blade surface, and the minimum spacing between adjacent aligned linear discontinuities may be reduced to 2D provided that: (a) the discontinuities do not exceed the limits of any other requirement of this standard, and (b) the discontinuities have shown no deleterious effects in service.

APPENDIX 1 (Page 2 of 2)

PROPELLER REPAIR TOLERANCES

Tolerance Class I Class II Class I l l Class IV

Propeller Blade Radius +0, -1.00% of design *1.00% of design +1.00%, -2.00% of design ±3.00% of design

Pitch at any Section ±2.00% of design i l l ±2.00% of design *3.00% of design ±3.00% of design

Average Pitch of each

Blade

±1.50% *1.50% ±2.00% ±2.00%

Blade Section Width at each Design Radius

+1.00%, -5.00% of design +1.00%, -5.00% of design +2.00%, -6.00% of design +3.00%, -6.00% of design

Thickness at each Design

Radius

+2.00%, -5.00% of maximum design thickness or -0.060 inches, whichever is greater

+2.00%, -5.00% of maximum design thickness or -0.125 inches, whichever is greater

±5.00% of maximum design thickness or -0.125 inches, whichever is greater

±5.00% of maximum design thickness or -0.125 inches, whichever is greater

Track at 0.95R 0.50% maximum of propeller design diameter

0.50% maximum of propeller design diameter

0.75% maximum of propeller design diameter

1.00% maximum of propeller design diameter

Cylindrical and Fillet Gage

Clearance

0.030 inches maximum 0.060 inches maximum 0.090 inches maximum Not applicable

Rate of Change in

Cylindrical and Fillet Gage Clearance

0.005 inches per inch maximum

0.010 inches per inch maximum

0.015 inches per inch maximum

Not applicable

Edge and Tip Gage

Clearance and Standoff

0.015 inches maximum on surface being inspected

0.015 inches maximum on surface being inspected

0.030 inches maximum on surface being inspected

0.030 inches maximum on surface being inspected

Fairing Rod Clearance 0.030 inches maximum 0.080 inches maximum 0.090 inches maximum 0.090 inches maximum

Rate of Change in Fairing

Rod Clearance

0.005 inches per inch maximum

0.010 inches per inch maximum

0.015 inches per inch maximum

0.015 inches per inch maximum

Fairing Rod Edge

Clearance [21

0.015 inches maximum on surface being inspected

0.015 inches maximum on surface being inspected

0.030 inches maximum on surface being inspected

0.030 inches maximum on surface being inspected

APPENDIX 2 (Page 1 of 2)

Table 6-1. Repari Tolerances [Continued]

Tolerance Class I Class II Class 111 Class IV

Special Edge Condition

Limits

Discontinuities shall not exceed 0.010 inches, on either face, in a 1-inch wide band along the LE and TE, and a 1.5-inch wide band along the tip from the 0.975R on the LE to the 0.975R on the TE; and at the break on the knuckle. There shall be no discontinuities on the TE radius.

Not applicable Not applicable Not applicable

Surface Finish 63 R. microinches maximum 63 R. microinches maximum 125 R. microinches maximum 125 R. microinches maximum for blades; 125 R.

microinches maximum for hub and cap; 32 R.

microinches maximum for for blades; 125 Ri, microinches maximum for hub and cap; 32 R.

microinches maximum for overall; 32 IR, microinches maximum for 0-ring sealing surfaces overall; 32 R„ microinches maximum for 0-ring sealing surfaces

0-ring sealing surfaces 0-ring sealing surfaces

Surface Inspection (Liquid As specified in reference (N). On sealing surfaces of the hub, gland and cap, defects shall not have any dimension Penetrant) greater than 0.030 inches and shall not be closer together than 1.00 inch. A propeller will be considered acceptable, even though it exceeds the specified limits, if service and subsequent inspection has confirmed that there are no cracks in the original casting or previous weld repaired areas.

TE and Tip Knuckle Break shall be sharp, i.e., 0.000 inches radius

Inspection with Plug Gage 80% uniformly distributed contact with and without keys. Depth of insertion shall not be more than 0.185 inches deeper than allowed by the new manufacture tolerance.

Keyway Clearance with Refer to the propeller drawing for the minimum side clearance. The maximum side clearance is 0.014 inches total

Plug Gage per key; top clearance is 0.028 - 0.052 inches.

Balance As specified on the applicable propeller or cap drawing; if not specified, derive from reference (R). See Chapter 5 for application of the tolerance.

Hub or Cap Pressure Test 10 psi shall be held for 10 minutes with no drop in pressure.

Notes: [1] For SSN 688 and SSBN 726 Class propellers with modified tips, special pitch tolerances apply. [2]

Applies to the first and last 10% of each blade section and the 0.95R to the tip.

APPENDIX 2 (Page 2 of 2)