1 / 8

AGENDA WI2318a + W2348 21st january 2013 API Research on DCB testing (in frame of RGSSP)

AGENDA WI2318a + W2348 21st january 2013 API Research on DCB testing (in frame of RGSSP). 1/DCB Testing of C-110 in Standard and Mild Conditions For Determination of Klimit => Cedric Linne WI2318a 2/ Methodolgy to provide Mechanical Assurance in DCB test Young’s modulus discussion

judah
Download Presentation

AGENDA WI2318a + W2348 21st january 2013 API Research on DCB testing (in frame of RGSSP)

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. AGENDA WI2318a +W234821st january 2013API Research on DCB testing (in frame of RGSSP) • 1/DCB Testing of C-110 in Standard and Mild Conditions For Determination of Klimit • => Cedric Linne WI2318a • 2/ Methodolgy to provide Mechanical Assurance in DCB test • Young’s modulus discussion • =>Gustavo Kissner WI2348 • 3/Development of sour service application limits for API 5CT Grade C110 => John Martin

  2. WI2318a API Research on DCB testing of C11021st january 2013 • DCB Testing of C-110 in Standard and Mild Conditions For Determination of Klimit (WI2318a) • Testing Plan for 2013 • V&M presentation on Klimit of C110

  3. WI2318a API Research on DCB testing of C110 (in frame of RGSSP) WI TARGETS 1/ Define correct procedure of DCB testing 2/ Define acceptance criteria for compliance aspect 3/ Define threshold of K1SSC for C110 in mild sour environment to resolve informative SR39

  4. WI2318a API Research on DCB testing of C110 (in frame of RGSSP) UPDATE • No possibility to launch project end 2012 for budget reason • Finally API approval obtained yesterday • => activity at OMNI will be actively running over H1 2013 • =>1st results for discussion at june 2013 meeting in Washington

  5. DCB Testing of C-110 in Standard and Mild Conditions For Detrmination of KLimit • New Plan for 2013-2014 study at OMNI (budget 180 kUSD) 5 commercial pipes donated from 3 vendors Covered in WI2348 prirority

  6. Klimit of C110 in NACE A sln Status • Klimit is still controversial but its importance may grow up in the future • Recommendation in the new revision of the NACE TM0177 • Two specific cases will bring arguments pro or against Klimit • Klimit as function of the specimen size • Klimit as function of the initial crack length Work scop • Comparison of Klimit of C110 in NACE A slnobtained using different sizes of specimens • Standard size Chevron notch without precracking • Standard size Chevron notch with precraking: planar strain • Subsize Chevron notch without precracking

  7. Klimit of C110 in NACE A sln Tests results - 1 Klimit = 26.8 MPa.m1/2 Klimit = 24.2 MPa.m1/2 Klimit = 20.3 MPa.m1/2

  8. Klimit of C110 in NACE A sln Conclusions • No influence of precracking on K1ssc • Klimit sub < Klimit std • Means that Klimit is not independent of the specimen size • Still some pending question about Klimit • variation of KIapplied by δ is not equivalent to a variation of KIapplied by ai • KIapplied does not control alone KISSC • KIappliedis not the key factor to explain the influence of the arm displacement on KISSC • New tests….follow up at June 2013 meeting • Using longer precracking • To confirm 1st results

More Related