Recommended Practice for the Repair and Remanufacture of Pipeline Valves

API RECOMMENDED PRACTICE 6DR SECOND EDITION, MAY 2012

REAFFIRMED, JANUARY 2020

Recommended Practice for the Repair and Remanfacture of Pipeline Valves

Upstream Segment

API RECOMMENDED PRACTICE 6DR SECOND EDITION, MAY 2012

REAFFIRMED, JANUARY 2020

Special Notes

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API publications may be used by anyone desiring to do so. Every effort has been made by the Institute to assure the accuracy and reliability of the data contained in them; however, the Institute makes no representation, warranty, or guarantee in connection with this publication and hereby expressly disclaims any liability or responsibility for loss or damage resulting from its use or for the violation of any authorities having jurisdiction with which this publication may conflict.

API publications are published to facilitate the broad availability of proven, sound engineering and operating practices. These publications are not intended to obviate the need for applying sound engineering judgment regarding when and where these publications should be utilized. The formulation and publication of API publications is not intended in any way to inhibit anyone from using any other practices.

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Copyright © 2012 American Petroleum Institute

Foreword

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Suggested revisions are invited and should be submitted to the Standards Department, API, 1220 L Street, NW, Washington, DC 20005, standards@api.org.

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Contents

Page

1. Scope 1

2. Normative References 1

3. Terms, Definitions, and Abbreviations 2

   1. Terms and Definitions 2

   2. Abbreviations 2

4. Preparation for Shipment to the Reconditioner 3

5. Control of Equipment 3

6. Disassembly and Cleaning of Valves 3

7. Evaluation of Components 4

8. Repair/Remanufacture/Replacement of Valve Parts 4

   1. Control of Manufacturing Operations 4

   2. Inspection of Valve Parts 4

   3. Replacement Parts and Material 4

   4. Fabrication Welding 5

   5. Repair Welding 5

   6. Nondestructive Examination (NDE) 5

9. Reassembly 5

10. Final Acceptance 6

    1. Pressure Testing 6

    2. Notification 6

11. Equipment Marking 6

    1. Nameplates 6

    2. Marking 6

12. Preparation for Shipment and Short Term Storage 7

13. Documentation 7

    1. General Documentation 7

    2. Documentation for 2 in. (DN 50) and Larger Valves 8

Annex A (informative) Minimum Requirements for Evaluation and Reconditioning of Parts 9

Bibliography 11

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