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API 16A 4th Edition Updates for Equipment Design Criteria

Learn about the latest updates in API 16A 4th Edition, covering temperature ratings, HAZ zone criteria, closure bolting standards, and more. Stay informed on work group discussions and ongoing topics for equipment marking and design.

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API 16A 4th Edition Updates for Equipment Design Criteria

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  1. API 16A 3rd Edition Winter Conference Jan - 2014 • API 16A Chairman: John Busby • Co-Chair: Jim McCabe

  2. API 16A Status • 3rd Edition / June 2004 / Effective Date: December 1, 2004 • Reaffirmed: August 2010 • Present Status: Under 4th Revision • Target date for comments Feb-2014 1220 L Street, NW • Washington, DC 20005-4070 • www.api.org

  3. 4th Edition Topics – API 16A • Updated Temp chart includes Low/Operating/Extreme levels • Defined HAZ zone 2mm (consistent w/API 6A and NACE) • Established Minimum Design Criteria for 16A equipment 1220 L Street, NW • Washington, DC 20005-4070 • www.api.org

  4. 4th Edition Topics – API 16A • Removed 25k & 30k classes (ref 17TR8) • We have 16A representation in 17TR8 (WG formed) • Closure Bolting Hardness per API 20E BSL-2 / API 6A (WG formed) • Gas handling systems are out of scope for 16A, should be in RP-64 1220 L Street, NW • Washington, DC 20005-4070 • www.api.org

  5. 4th Edition Topics – API 16A • Sealing characteristics on annulars and ram preventers. (WG formed) • Updated shearing test to include off-center test. • Product history files require additional data, (WG formed) 1220 L Street, NW • Washington, DC 20005-4070 • www.api.org

  6. 4th Edition Topics – API 16A • Discussed brinnelling of ring groves during shell test. Ring groove dimensional measurements should be taken as finished machined data before shell test • Document clean up. (ISO replaced) • Discussed establishing PSL levels, agreed 16A criteria already meets PSL-3 criteria. Dropped further consideration.

  7. 4th Edition Work Groups – API 16A • Five Work Groups Formed • Gas testing qualification • Sealing characteristics • PSI-A v/s PSI-G • Closure bolting • Product history records 1220 L Street, NW • Washington, DC 20005-4070 • www.api.org

  8. New/Ongoing Discussion Topics • More robust shearing test, i.e. off-center in compression • Designate surface & subsea equipment • Steam temp rating • Closing on flow • 25k & 30k ratings • Define hub face separation for drilling connectors • 5 year product marking requirements • 6A-F flange limits • Should 16A include workover operations in scope

  9. New Temperature Ratings • Table 4 – Temperature ratings of non-metallic sealing materials

  10. Minimum BOP Design Criteria

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