1 / 7

API Spec 6A Tensile Test Yield Offset Requirements

API Spec 6A Tensile Test Yield Offset Requirements. Tim Haeberle API SC6 2012 Summer Meeting. Background. PROBLEM: The yield strength acceptance criteria for bodies, bonnets, and end and outlet connections is limited to the 0,2% offset method yield strength values in Table 6. This is good!

titus
Télécharger la présentation

API Spec 6A Tensile Test Yield Offset Requirements

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. API Spec 6A Tensile Test Yield Offset Requirements Tim Haeberle API SC6 2012 Summer Meeting

  2. Background PROBLEM: • The yield strength acceptance criteria for bodies, bonnets, and end and outlet connections is limited to the 0,2% offset method yield strength values in Table 6. This is good! • However, for mandrel hangers it is up to the manufacturer to specify not only the yield strength in MPa (psi), but also the method of determining the yield strength. • Unfortunately, if the manufacturer does not specify the method of determining the yield strength, methods other than the 0,2% offset method may be used, and these may give higher or lower values than would be obtained if the 0,2% offset method were used. Need to fix in API version

  3. The Solution PROPOSED REVISION: • 5.3.5.2 PSL 2 to 4 tensile testing (for mandrel tubing hangers and casing hangers) “b) test method: Perform tensile tests at room temperature in accordance with the procedures specified in ISO 6892-1 or ASTM A370. Perform a minimum of one tensile test. The results of the tensile test(s) shall satisfy the manufacturer’s specified requirements. The 0,2% offset method shall be used for determination of the yield strength”. JUSTIFICATION: • A standardized method of determining the yield strength needs to be used for mandrel casing and tubing hangers.

  4. API Ballot • Ballot ready for SC6 to approve at the 2012 Summer Meeting for formal balloting

  5. End Of Presentation

  6. Backup Slides

  7. Background CURRENT WORDING • 5.3.5.2 PSL 2 to 4 tensile testing (for mandrel tubing hangers and casing hangers) “b) test method: Perform tensile tests at room temperature in accordance with the procedures specified in ISO 6892-1 or ASTM A370. Perform a minimum of one tensile test. The results of the tensile test(s) shall satisfy the manufacturer’s specified requirements.” • 5.4.2.3 PSL 2 to 4 tensile testing (for bodies, bonnets, and end and outlet connections) “b) test method: Perform tensile tests at room temperature in accordance with the procedures specified in ISO 6892-1 or ASTM A370. Perform a minimum of one tensile test. The results of the tensile test(s) shall satisfy the applicable requirements of Table 6.” • API 6A Table 6, column 2 (for bodies, bonnets, and end and outlet connections) “0,2% offset yield strength”.

More Related