PWS_29_Sep_2015.pdf

PERFORMANCE-BASED WORK STATEMENT (PWS)

FOR

SILVER PLATING

309 CMXG/532 CMMXS

29 SEPTEMBER 2015

PERFORMANCE-BASED WORK STATEMENT

TABLE OF CONTENTS

SECTION PAGE

1 DESCRIPTION OF SERVICES 3

2 SERVICES SUMMARY 6

3 GOVERNMENT FURNISHED PROPERTY AND SERVICES 6

4. GENERAL INFORMATION 7

5 APPENDICES 10

1.0. DESCRIPTION OF SERVICES. This Performance Work Statement (PWS) defines Silver

Stripping and Silver Plating services required by the Landing Gear Squadron at Hill Air Force

Base, UT. This requirement will be placed on a Indefinite Delivery Indefinite Quantity (IDIQ) vehicle to provide silver stripping, inspection, and silver plating of aircraft component services.

The IDIQ period will be for five years.

1.1. SILVER STRIPPING REQUIREMENTS. The contractor shall strip the existing silver plate from all parts per MIL-STD-871 (Appendix D). Stripping of the silver plate shall be accomplished using solution one of MIL-STD-871, sodium cyanide-sodium hydroxide solution, by making the part anodic. Several of the parts may also have cadmium plated surfaces. Hill AFB personnel will strip the cadmium prior to delivery to the contractor.

The contractor should be aware that there could be cadmium residuals on the surface of the parts.

1.1.2. Stripping of C-130 Cylinder Cap. The contractor shall strip the existing silver plate from the C-130 Cylinder Cap. The silver plated area is the grooves. Following the strip, the parts shall be returned to Hill AFB. These parts will be stripped only;

they will not be silver plated.

1.1.3. Stripping of C-5 Screw Jacks. Note: there are several different sizes.

1.1.3.1. Each screw jack has two components, a jack shaft head and a tube. Sizes range from about 12 to about 24 inches long and from about 1 to about 2.5 inches in diameter. Weight is less than ten pounds each. The contractor shall strip the existing silver from the tube section of the screw jacks. The contractor shall mask the head per paragraph 1.1.3.2.

1.1.3.2. For the shaft, mask the head. Do not strip the head. The head is a separate piece from the shaft but will not be removed. Do not allow solution to seep into the joint between the head and the shaft. These parts will be stripped only and returned to Hill AFB; they will not be silver plated.

1.2. SILVER PLATING APPLICATION REQUIREMENTS. The contractor shall silver plate IAW QQ-S-365 and ASTM B 700-08. The old specification (QQ-S-365) has been cancelled and superseded by ASTM B-700-08; although QQ-S-365 has been superseded, some Technical Orders still specify the use of QQ-S-365. Embrittlement relief bakes will be performed after processing per ASTM B 850-98. See Appendix D.

1.2.1. B-1B and B-2 Nose Landing Gear Steering Collar. Refer to Attachment 1 for a description of the part. NOTE: These same parameters shall be used to process both steering collars since the parts are very similar, however The B-2 Steering

Collar requires supplemental tarnish resistance per (QQ-S-365 Grade A).

1.2.1.1. Plate the gear teeth as noted by flag note 3 on Attachment 1.

1.2.1.2. Nickel strike to approximately 0.00005 inches (0.05 mils where 1 mil =

0.001 inches) thick.

1.2.1.3. Do not copper strike.

1.2.1.4. Silver plate to 0.00025 to 0.00045 inches (0.25 to 0.45 mils) thick.

1.2.1.5. The silver shall be plated from a cyanide solution.

1.2.1.6. Bake following silver plate for 4 hours minimum at 275 o -300 o F. Bake to be initiated within 4 hours of completion of silver plate.

1.2.2. B-52 Main Landing Gear Centering Cam. The centering cam assembly is a matched set comprised of an upper cam, part number 25-4213 and a lower cam, part number 25-4212. Each set shall be kept matched. Refer to Attachment 3 for a description of the cams.

1.2.3.1. Plate the cam face of the lower cam, part number 25-4212 as noted by flag note 6 on attachment 3. The lower cam can be identified by the keys machined into the outer circumference of the part.

1.2.3.2. Nickel strike to approximately 0.00005 inches (0.05 mils) thick.

1.2.3.3. Silver plate to 0.0004 to 0.0006 inches (0.4 to 0.6 mils) thick.

1.2.3.4. Bake following silver plate for 24 hours minimum at 350 o -400 o F. Bake to be initiated within 4 hours of completion of silver plate.

1.2.3. B-52 Tip Gear Vertical Thrust Bushing. Refer to Attachment 4 for a description of the part.

1.2.4.1. Plate the inside diameter except for the grooves

1.2.4.2. Nickel strike to approximately 0.00005 inches (0.05 mils) thick.

1.2.4.3. Silver plate to 0.0004 to 0.0006 inches (0.4 to 0.6 mils) thick.

1.2.4.4. No bake required.

2. SPECIAL REQUIREMENTS.

2.1. SILVER PURITY

2.1.1 The minimum purity of the silver shall be 98.0% as deposited.

2.1.2 PROCESS DOCUMENTATION

2.1.2.1. The contractor shall provide documentation with each serialized part (B-

1B steering collar, B-52 steering cam, and B-52 thrust bushing) showing the time and date the silver plating process was completed and the time and date in and out of bake. This documentation shall be provided to Hill

AFB with each delivery of parts. The contractor shall maintain documentation showing calibration and control of the bake oven within the required bake temperature range. This documentation shall be maintained by the contractor for two years. It shall be made available to

Hill AFB personnel on request. (CDRL A001) (Services Summary)

2.1.3. HYDROGEN EMBRITTLEMENT TESTING AND QUALITY ASSURANCE

2.1.3.1. The plating process used by the contractor shall not cause hydrogen embrittlement of the plated parts. The contractor shall maintain the process to this requirement per the destructive test for embrittlement

(paragraph 4.5.6.1) in QQ-S-365D (even though specification QQ-S-

365D is inactive) prior to receipt of any parts. The contractor shall use the test specimens per QQ-S-365D or test specimens per ASTM F 519-08

Type 1a.1. The specimens shall receive a nickel strike 0.0001 inches (0.1 mils) thick and be silver plated to 0.0005 inches (0.5 mils) thick minimum. The specimens shall be baked at 375 +/- 25 degrees F for 24 hours prior to being tested.

2.1.3.2. In addition to the initial qualification, the contractor shall perform hydrogen embrittlement testing as in (2.1.3.1) above to certify the silver plating process at least once per month using four specimens. If the test fails, parts shall not be processed until the cause of the failure has been corrected and the process re-tested. Results of the most recent passing test shall be included with each delivery of completed parts. (CDRL

A001) (Services Summary)

3. SERVICES SUMMARY

4. GOVERNMENT FURNISHED PROPERTY. There is no Government Furnished Property on this contract. All work is being accomplished off-base/off-site.

5. DELIVERY

5.1. The contractor shall accept parts at Hill AFB and sign a DD form 1149 this form is used to track and maintain accountability of parts. All parts are located at the following facility address: 309 th

CMXG/532 CMMXS 5760 Southgate Avenue, Bldg. 507 Hill

AFB, Utah 84056-5228. (CDRL A002) (Services Summary)

5.1.1. The contractor shall be responsible for pick-up and delivery of the parts from Hill

AFB and returning the completed parts to Hill AFB. Hill AFB personnel will package the parts for delivery to the contractor. The contractor shall be responsible for packaging as necessary to prevent damage to the parts on return to

Hill AFB. The parts are to be delivered to the above address as stated in 5.1.

Upon release of each task order the contractor has 14 business days to complete the contractual requirements.

Performance Objective PWS Para Performance Threshold

Strip silver coatings in accordance with technical data and approved specifications.

1.1. through

1.1.3.2

Work must be within specifications and tolerances set forth in the applicable technical orders. There is no room for error. 100%.

Apply silver coatings in accordance with technical data and approved specifications.

1.2. through

1.2.4.4

Work must be within specifications and tolerances set forth in the applicable technical orders. There is no room for error. 100%.

Process Documentation 2.1.2.; 2.1.2.1. 100%

Hydrogen Embrittlement

Testing

2.1.3 through

2.1.3.2

100%

Delivery 5.1 and 5.1.1 100%

6. GENERAL INFORMATION

6.1. QUALITY CONTROL

6.1.1. Quality Control Program. In compliance with the Contract clause “Inspection of

Services”, the contractor shall establish a complete Quality Control Program to ensure the requirements of this contract are provided as specified. The contracting officer will notify the contractor of acceptance or required modifications to the plan before the contract start date. The contractor shall make appropriate modifications (at no additional costs to the government) and obtain acceptance of the plan by the contracting officer before the start of the first operational performance period.

6.2. SECURITY REQUIREMENTS

6.2.1 The Contract Administrator (CA) will provide the contractor with a “Request for

Identification Credential (AFMC Form 496)” for each employee of the contractor requiring access to Hill AFB. The contractor shall complete the requests and return them to the CA for signature. The CA will return them to the contractor for submittal to Pass and Registration (South Gate Visitor Center).

6.2.2 The Security Manager will provide the contractor with the “Unescorted Entry

Authorization Certificate” (AF Form 2586) for each employee requiring entry into controlled areas. The contractor shall complete the forms and return them to the security manager. The PM will request access to the controlled area from the

Security Office (309 CMXG/OBM) located in building 507. Once approved by the Security Office, the contractor can submit the forms to Pass and Registration

(South Gate Visitor Center) for the Unescorted Entry Badge.

6.3. CONTRACT CHANGES. Any matter concerning a change to the scope, prices, terms or conditions of this contract shall be referred to the Contracting Officer (CO).

6.4. GOVERNMENT SURVEILLANCE. The services to be performed by the contractor during the period of this contract shall at all times and places are subject to review by the Contracting Officer (CO) or authorized representative(s).

6.5. CONTRACT DISCREPANCIES. The Technical Program Manager (TPM)(s) or alternate(s) will inform the contract manager in person when discrepancies occur and will request corrective action. The TPM(s) or alternate(s) will make a notation of the discrepancy on their assessment checklist with the date and time the discrepancy was noted and will request the contract manager (or authorized representative) to initial the entry on the checklist.

6.6. HOURS OF OPERATION

6.6.1 Normal Hours of Operation. The contractor shall pick-up and delivers items under this contract during the following hours: Monday through Friday from

0600 – 1530 except holidays.

6.6.1.1. Recognized Holidays. The contractor is not required to pick-up or delivers items on the following days: New Year’s Day, Martin Luther

King Day, Presidents Day, Memorial Day, Independence Day, Labor

Day, Columbus Day, Veterans Days, Thanksgiving Day and Christmas

Day. If the holiday falls on Saturday, it is observed on Friday. If the holiday falls on a Sunday, it is observed on Monday.

6.7. RECORDS. The contractor shall be responsible for creating, maintaining, and disposing of only those government required records that are specifically cited in this PWS or required by the provisions of a mandatory directive listed in, Applicable Publications and

Forms. If requested by the Government, the contractor shall provide the original record or a reproducible copy of any such record within five working days of receipt of the request.

6.8. PHASE OUT

6.8.1 If there is a change in contractor or if the operation reverts to in-house, the incumbent contractor will provide familiarization, to the government or the follow-on contractor, whichever the case may be. During the phase-out familiarization period, the incumbent will be fully responsible for the operation of the silver plating capability.

6.8.2 The government reserves the right to conduct site visits in all contractor operated facilities in conjunction with the solicitation of offers for the follow-on contract.

In the event the follow-on contract is awarded to other than the incumbent, the incumbent contractor will cooperate to the extent required to permit an orderly change over to the successful contractor. With regard to the successor contractor’s access to incumbent employees, a recruitment notice may be placed in each facility.

6.9. PUBLICATIONS

6.9.1 Compliance with all publications, regulations and operating instructions provided by the Government is required when:

6.9.2 They pertain to the procedures for materials expediting herein and where the contractor is authorized by the statement of work to accomplish the work specified in the publication, regulation or operating instructions.

6.9.3 The publications prescribe USAF policies, use of materials, procedures and processes applicable to the work requirements.

6.9.4 The contractor is required to acquire and work on the latest version of the publication.

7. APPENDICES:

A. Acronyms & Abbreviations List

B. Estimated Workload Data

D. Publications/Instructions

E. Hydrogen Embrittlement Bake Record

F. Engineering Drawings

APPENDIX A

ACRONYMS AND ABBREVIATIONS LIST

Acronym/Abbreviation Definition

AF Air Force

AFB Air Force Base

AFMC Air Force Material Command

CO Contracting Officer

DOD Department of Defense

FAR Federal Acquisition Regulation

OSHA Occupational Safety and Health Act

PWS Performance-Based Work Statement

QA Quality Assurance

QAE Quality Assurance Evaluator

QCP Quality Control Program

SS Services Summary

TPM Technical Program Manager

USAF United States Air Force

APPENDIX B

ESTIMATED WORKLOAD DATA

Silver plating and stripping requirements

Component Specification Material and

Heat Treat

Estimated

Annual

Quantity

Batch

Size

Attachment

B-1B Nose

Landing Gear

Steering Collar

TO 4S2-82-2

MIL-STD-871

QQ-S-365

Grade B Type I

9310 steel

150,000 psi

16 1 1

B-2 Steering

Collar Assembly.

TO 4S2-92-3

MIL-STD-871

QQ-S-365

Grade A Type I

4340 Steel 3 1 1

B-52 Main

Landing Gear

Centering Cam

TO 4S1-57-3

MIL-STD-871

ASTM B 700

Grade A Class N

AMS 2410 steel

180,000-

200,000 psi

113 1 3

B-52 Tip Gear

Vertical Thrust

Bushing

TO 4S6-2-3

MIL-STD-871

ASTM B 700

Grade A Class N

4130 steel

150,000-

170,000 psi

1 4

C-5 Screw Jacks MIL-STD-871 Steel

Unknown heat treat

10 ~10

C-130 Cylinder

Cap

MIL-STD-871 Steel

220,000 psi

10 1

NOTE: DRAWINGS WILL NOT BE PROVIDED BY THE GOVERNMENT.

CONTRACTOR WILL BE OBLIGATED TO ABIDE BY ASTM STANDARDS.

Above shows the parts that currently require silver plating or stripping. Note that the specification has changed from QQ-S-365 to ASTM B 700-08 since QQ-S-365 has been deactivated. Attached are drawings, photographs, or written descriptions of these parts. The estimated annual quantity listed is not intended to be a guarantee of the quantity that will require silver. It is not intended to be a minimum or a maximum. It is only a current estimate of the number of parts that may generate.

APPENDIX D

PUBLICATIONS/INSTRUCTIONS

Applicable PWS

Publication/Instruction /Name Date Paragraph/Chapter Paragraph

QQ-S-365 (Cancelled) replaced with ASTM B 700-08 Entire Document 1.2 & 1.2.1

ASTM B 700-08 Aug 1, 2008 Entire Document 1.2

ASTM F 519-08 Type 1a1 May 1, 2008 9.1 2.1.3.1

ASTM B 850-98 (reapproved 2004) Entire Document 1.2

MIL-STD-871 Entire Document 1.1.

APPENDIX E

Hydrogen Embrittlement Bake Record

Part Number______________________

Serial Number Date Out of Plating Into Bake Date Out of Bake Invoice #

APPENDIX F

Attachment 3

Attachment 4