2nd Edition: 2019 Winter Standards Meeting API Standard 6X 2nd Edition: 2019 Winter Standards Meeting Prepared for: SC 6 Prepared by: Ramón I San Pedro, PE Date: 23 January 2019 SES Document No.: API6X-2ndEd-EN-PT-06 (Rev A)

Content Work Completed Ballot Summary and Resolution Remaining Issues Path Forward

Work Completed Added new Section 4, Failure Modes Plastic collapse Local failure Ratcheting and Progressive Distortion Service Criteria Pure Shear Bearing Stress is per manufacturer Added standard and non-standard material stress limits, since they were removed from 6A Continue to allow von Mises stress if permitted by API product specification Added hydrostatic test capacity to Limit Analysis Added limitations statements to Limit Analysis

Work Completed Removed all definitions and discussion from Stress Categories and moved them to Annex A Added to Scope that bolting allowable stresses are given in API product specifications and are outside scope of 6X Added definitions of elastic analysis, limit analysis, and plastic analysis General re-organization and clean-up so that body of document includes only requirements

Ballot Summary and Resolution Ballot closed on 29 October 2018 15 Affirmative (68% response rate, 100% affirmative) 0 Negative 7 Did Not Vote 135 comments from 9 organizations, mostly technical Document was recirculated after comment resolution 9 January 2019: This is notification that the final document recirculation for comment has closed for the proposed API 6X, 2nd Edition. There were no additional comments submitted over what was generated through the ballot system. The document will now proceed to publication.

Remaining Issues It has been proposed to re-instate much of the original Introduction that gave background for document Note on impact values and brittle fracture has been proposed Note on minimum through-thickness properties has been proposed Note on possible de-rating of some materials below 250F (e.g. duplex stainless steels) has been proposed

Path Forward Finalize text for few remaining items, if any are to be implemented Proceed to publication

Thank You!

Limitations of This Report This report is prepared for the sole benefit of the Client, and the scope is limited to matters expressly covered within the text. In preparing this report, Stress Engineering Services, Inc. (SES) has relied on information provided by the Client and, if requested by the Client, third parties. SES may not have made an independent investigation as to the accuracy or completeness of such information unless specifically requested by the Client or otherwise required. Any inaccuracy, omission, or change in the information or circumstances on which this report is based may affect the recommendations, findings, and conclusions expressed in this report. SES has prepared this report in accordance with the standard of care appropriate for competent professionals in the relevant discipline and the generally applicable industry standards. However, SES is not able to direct or control operation or maintenance of the Client’s equipment or processes. Rev Date Description Originator Checker Reviewer A 23-Jan-2019 Issued for review R San Pedro   SES Document No.: API6X-2ndEd-EN-PT-06