API 16A January 24, 2019 Winter Conference – San Antonio 16A Chair: Leonard Childers 16A Vice-Chair: Nicolas (Nic) Arteaga Current status: 16A 4th edition published in April 2017, effective date: April 1, 2018 Errata revision completed August 2017 4th edition Addendum 1 published October 2017 4th edition HPHT Addendum went to ballot in Jan 2019 4th edition Addendum for QTC, Thermocouples and additional validation requirements went to ballot in Oct 2018, in comment resolution Development of 5th edition is on going.

Active Work Groups Annex that provides requirements for HPHT equipment, 4th edition - Jim Raney QTC, Thermocouple and validation requirements addendum to 4th edition – Pavan Bavaraju/Mark Miser Rating of drill-through equipment that accounts for effects of differential pressure for 5th edition - Chris Johnson Elastomer quality requirements for 5th edition - Bill Carbaugh 1220 L Street, NW • Washington, DC 20005-4070 • www.api.org

Anticipated Rating Scheme Differential Pressure Rating – This would be the maximum pressure differential a component/assembly could contain either between wellbore and the outside environment or on a boundary to fluid moving up the wellbore. Absolute Pressure Rating – This would be the maximum absolute pressure allowed between wellbore and the outside environment or on a boundary to fluid moving up the wellbore. 1220 L Street, NW • Washington, DC 20005-4070 • www.api.org

10 Year Challenge 1220 L Street, NW • Washington, DC 20005-4070 • www.api.org

Summary of Addendum Ballot #4621 QTC, Thermo Summary of Addendum Ballot #4621 QTC, Thermo., BSR & Operator Validation 35 voters, 26 votes cast = Response rate : 74% (50% req.) Affirmative votes: 84% (must be > 66.7% to pass) Consensus: Yes 221 discrete comments (93% from OEMs) 175 technical 21 general 25 editorial 1220 L Street, NW • Washington, DC 20005-4070 • www.api.org