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Moderate Sour Service Commodity 5L Pipe WG4232

Moderate Sour Service Commodity 5L Pipe WG4232. Presentation to Resource Group on Sour Service Products at the API Winter Standardization Meetings New Orleans, LA January 2013. Background.

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Moderate Sour Service Commodity 5L Pipe WG4232

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  1. Moderate Sour Service Commodity 5L PipeWG4232 Presentation to Resource Group on Sour Service Products at the API Winter Standardization Meetings New Orleans, LA January 2013

  2. Background • Line pipe made to “moderate sour service” specification requirements have been successfully used as the baseline stocked line pipe product in the Canadian industry for over 30 years. In addition, there is considerable worldwide industry experience using custom solutions similar to Solution D • The current 5L sour service requirements in Annex H do not provide sufficient flexibility for this product to be supplied as stock to the industry. • API 5L WG was struck and conducted 3 meetings in last 4 months to discuss and refine proposal.

  3. Key Proposals (1/2) • Develop 3 separate sour product classes in Annex H • Class A – current default sour service HIC tested to NACE TM0284 Solution A (often termed “severe sour service”) • Class D – new standard “moderate sour service” HIC tested to NACE TM0177 Solution D (~pH4 & 10% H2S PP) • Class C – Other “custom” sour requirement • Retain current acceptance criteria for sour class D: • crack sensitivity ratio (CSR) ≤ 2 %; • crack length ratio (CLR) ≤ 15 %; • crack thickness ratio (CTR) ≤ 5 %.

  4. Key Proposals (2/2) • Identify sour class on pipe stencil • Mark HIC & SSC (as applicable) test solution and acceptance criteria on MTR • Add root guided bend test for ERW pipe in Annex H and eliminate 0º flattening test • Restrict max TS to 625-720 MPa (90.6-104.4 ksi) from 655-760 MPa (95-110.2 ksi) • Loosen default S limits for Class D sour pipe • Make end lam for Class D ERW by agreement in Annex K

  5. Issue to be considered (1) • ISO 15156-2 Table B.3 requires 0% cracking for solutions other than Solution A unless documented approval of the equipment user. 0% cracking would not allow manufacturers to differentiate production methods between moderate sour and Solution A sour products. • Request RGSSP guidance to address through NACE MR0175/ISO 15156-2 group. • What is required to justify this change to ISO 15156-2 / NACE MR0175? • What is basis for 0% cracking?

  6. Issue to be considered (2) • Request input from RGSSP on test solution choice requested: • WG4232 is currently proposing NACE TM0177 solution A with ph4 (+- 0.1) and 10% H2S PP. Alternatively, NACE TM0284 Solution B has been considered. • Request RGSSP recommend preferred solution which may be most useful for potential users.

  7. Thank you Presentation to Manufacturers Advisory Group at the API Winter Standardization Meetings New Orleans, LA January 2013 Alex Afaganis

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