Api spec 6a tensile test yield offset requirements
Download
1 / 7

API Spec 6A Tensile Test Yield Offset Requirements - PowerPoint PPT Presentation


  • 112 Views
  • Uploaded on

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!

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'API Spec 6A Tensile Test Yield Offset Requirements' - titus


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Api spec 6a tensile test yield offset requirements

API Spec 6A Tensile Test Yield Offset Requirements

Tim Haeberle

API SC6 2012 Summer Meeting


Background
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


The solution
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.


Api ballot
API Ballot

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




Background1
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”.