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Standards Addenda & Errata

Addenda (amendments) and errata for published API standards are available via the API Publications Store.

  • Simply visit the store and enter the API publication number in the search box at the top right of the webpage.
  • Then, scroll down to the "Amendments & Errata" section for the document.
  • Spec Q1, Specification for Quality Management System Requirements for Manufacturing Organizations for the Petroleum and Natural Gas Industry, 9th Edition, June 2013   
    • Errata 1, February 2014
    • Errata 2, March 2014
    • Addendum 1, June 2016
  • Spec Q2, Specification for Quality Management System Requirements for Service Supply Organizations for the Petroleum and Natural Gas Industries, 1st Edition, December 2011
    • Addendum 1, June 2016
  • Spec 2C, Offshore Pedestal-mounted Cranes, 7th Edition, March 2012
    • Errata 1, March 2013
  • RP 2D, Operation and Maintenance of Offshore Cranes, 7th Edition, December 2014
    • Errata 1, August 2015
  • RP 2GEO/ISO 19901-4, Geotechnical and Foundation Design Considerations, 1st Edition, April 2011
    • Addendum 1, October 2014
  • RP 2MOP/ISO 19901-6, Marine Operations, 1st Edition, July 2010
    • Errata 1, April 2015
  • RP 2SK, Design and Analysis of Stationkeeping Systems for Floating Structures, 3rd Edition, October 2005
    • Addendum 1, May 2008
  • Bull 2V, Design of Flat Plate Structures, 3rd Edition, June 2004
    • Errata 1, March 2008
  • RP 4G, Operation, Inspection, Maintenance, and Repair of Drilling and Well Servicing Structures, 4th Edition, April 2012
    • Errata 1, September 2013
    • Addendum 1, August 2016
  • RP 5A3/ISO 13678, Recommended Practice on Thread Compounds for Casing, Tubing, Line Pipe, and Drill Stem Elements, 3rd Edition, November 2009
    • Errata 1, April 2011
  • RP 5A5/ISO 15463, Field Inspection of New Casing, Tubing, and Plain-end Drill Pipe, 7th Edition, June 2005
    • Errata 1, December 2009
  • RP 5B1, Threading, Gauging, and Thread Inspection of Casing, Tubing, and Line Pipe Threads, 5th Edition, August 1999
    • Addendum 1, September 2004
  • TR 5C3/ISO 10400:2007, Technical Report on Equations and Calculations for Casing, Tubing, and Line Pipe Used as Casing or Tubing; and Performance Properties Tables for Casing and Tubing, 1st Edition, December 2008
    • Addendum 1, October 2015
  • Spec 5CRA/ISO 13680, Specification for Corrosion Resistant Alloy Seamless Tubes for Use as Casing, Tubing and Coupling Stock, 1st Edition, February 2010
    • Errata 1, August 2011
  • Spec 5CT, Specification for Casing and Tubing, 9th Edition, July 2011
    • Errata 1, September 2012
    • Errata 2, October 2016
  • Spec 5L, Specification for Line Pipe, 45th Edition, December 2012
    • Errata 1, April 2015
  • Spec 5LC, CRA Line Pipe, 4th Edition, March 2015
    • Errata 1, October 2015
  • Spec 5LCP, Specification for Coiled Line Pipe, 2nd Edition, October 2006
    • Errata 1, July 2007
  • Std 5T1, Imperfection Terminology, 10th Edition, November 1996
    • Addendum 1, September 2003
  • RP 5UE, Recommended Practice for Ultrasonic Evaluation of Pipe Imperfections, 2nd Edition, June 2005
    • Addendum 1, April 2009
  • Spec 6A, Specification for Wellhead and Christmas Tree Equipment, 20th Edition, October 2010
    • Addendum 1, November 2011
    • Addendum 2, November 2012
    • Addendum 3, March 2013
    • Addendum 4, June 2016
    • Errata 10, August 2016 (includes changes from Errata 1–9) 
  • Std 6ACRA, Age-hardened Nickel-based Alloys for Oil and Gas Drilling and Production Equipment, 1st Edition, August 2015
    • Errata 1, October 2015
  • Std 6AV2, Installation, Maintenance, and Repair of Surface Safety Valves and Underwater Safety Valves Offshore, 1st Edition, March 2014
    • Errata 1, August 2014
  • Spec 6D, Specification for Pipeline and Piping Valves, 24th Edition, August 2014
    • Addendum 1, March 2015
    • Addendum 2, June 2016
    • Errata 8, August 2016 (includes changes from Errata 1–7)
  • Spec 6DSS, Specification for Subsea Pipeline Valves, 2nd Edition, December 2009
    • Errata 1, September 2010
    • Errata 2, November 2010
  • Spec 6FA, Specification for Fire Test for Valves, 3rd Edition, April 1999
    • Errata 1, December 2006
    • Errata 2, December 2008
  • Spec 6FB, Fire Test for End Connections, 3rd Edition, May 1998
    • Errata 1, August 2006
    • Supplement, December 2006
    • Errata 2, December 2008
  • Std 6X, Design Calculations for Pressure-containing Equipment, 1st Edition, March 2014
    • Errata 1, May 2014
  • Spec 7-1, Specification for Rotary Drill Stem Elements, 1st Edition, March 2006
    • Addendum 1, March 2007
    • Addendum 2, August 2009
    • Addendum 3, April 2011
  • Spec 7-2, Specification for Threading and Gauging of Rotary Shouldered Thread Connections, 1st Edition, June 2008
    • Addendum 1, December 2010
  • Spec 7F, Oil Field Chain and Sprockets, 8th Edition, November 2010
    • Errata 1, May 2013
  • RP 7G, Drill Stem Design and Operating Limits, 16th Edition, August 1998
    • Errata 1, May 2000
    • Addendum 1, November 2003
    • Addendum 2, September 2009
  • RP 7G-2/ISO 10407-2, Recommended Practice for Inspection and Classification of Used Drill Stem Elements, 1st Edition, August 2009
    • Errata 1, October 2009
  • RP 7HU1, Safe Use of 2-inch Hammer Unions for Oilfield Applications, 1st Edition, May 2009
    • Errata 1, February 2014
  • Spec 7K, Drilling and Well Servicing Equipment, 6th Edition, December 2015
    • Errata 1, May 2016
    • Errata 2, August 2016
  • RP 7L, Procedures for Inspection, Maintenance, Repair, and Remanufacture of Drilling Equipment, 1st Edition, December 1995
    • Addendum 1, February 2006
    • Addendum 2, March 2006
  • Spec 8C, Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), 5th Edition, April 2012
    • Errata 1, May 2014
  • Spec 9A, Specification for Wire Rope, 26th Edition, May 2011
    • Errata 1, October 2012
    • Addendum 1, November 2016
  • RP 10F, Recommended Practice for Performance Testing of Cementing Float Equipment, 3rd Edition, April 2002
    • Errata 1, December 2003
  • RP 11AR, Recommended Practice for Care and Use of Subsurface Pumps, 4th Edition, June 2000
    • Errata 1, December 2013
  • Spec 11B, Specification for Sucker Rods, Polished Rods and Liners, Couplings, Sinker Bars, Polished Rod Clamps, Stuffing Boxes, and Pumping Tees, 27th Edition, May 2010
    • Errata 1, October 2010
    • Errata 2, February 2011
  • Spec 11E, Specification for Pumping Units, 19th Edition, November 2013
    • Errata 1, August 2015
  • Spec 13A, Specification for Drilling Fluids Materials, 18th Edition, February 2010
    • Errata 1, August 2014
    • Errata 2, May 2015
    • Errata 3, July 2015
    • Errata 4, October 2016
  • RP 13B-1, Recommended Practice for Field Testing Water-based Drilling Fluids, 4th Edition, March 2009
    • Errata 1, August 2014
  • RP 13B-2, Field Testing Oil-based Drilling Fluids, 5th Edition, April 2014
    • Errata 1, August 2014
  • Spec 14A, Subsurface Safety Valve Equipment, 12th Edition, January 2015
    • Errata 1, July 2015
  • Spec 15HR, High-pressure Fiberglass Line Pipe, 4th Edition, February 2016
    • Errata 1, August 2016
  • Spec 15S, Spoolable Reinforced Plastic Line Pipe, 2nd Edition, March 2016
    • Errata 1, July 2016
  • Spec 16A, Specification for Drill-through Equipment, 3rd Edition, June 2004
    • Errata/Supplement, November 2004
  • Spec 16C, Choke and Kill Equipment, 2nd Edition, March 2015
    • Addendum 1, July 2016
    • Errata 4, July 2016 (includes changes from Errata 1–3)
  • Spec 16F, Specification for Marine Drilling Riser Equipment, 1st Edition, August 2004
    •  Addendum 1, September 2014
    • Addendum 2, November 2014
  • RP 17A/ISO 13628-1, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, 4th Edition, January 2006
    • Addendum 1, December 2010
  • Spec 17D/ISO 13628-4, Design and Operation of Subsea Production Systems—Subsea Wellhead and Tree Equipment, 2nd Edition, May 2011
    • Errata 7, October 2015 (includes changes from Errata 1–6)
    • Addendum 1, September 2015
  • RP 17H, Remotely Operated Tools and Interfaces on Subsea Production Systems, 2nd Edition, June 2013
    • Errata 1, January 2014
  • Spec 17J/ISO 13628-2, Specification for Unbonded Flexible Pipe, 4th Edition, May 2014
    • Errata 1, September 2016
  • Spec 17L1, Specification for Flexible Pipe Ancillary Equipment, 1st Edition, March 2013
    • Errata 2, November 2015 (includes changes from Errata 1)
  • RP 17V, Recommended Practice for Analysis, Design, Installation, and Testing of Safety Systems for Subsea Applications, 1st Edition, February 2015
    • Errata 1, July 2015
  • RP 19B, Evaluation of Well Perforators, 2nd Edition, September 2006
    • Addendum 2, December 2014 (includes changes from Addendum 1)
  • ANSI/API RP 19D, Measuring the Long-term Conductivity of Proppants, 1st Edition, May 2008
    • Errata 1, July 2008
  • Spec 19G1, Side-pocket Mandrels, 1st Edition, May 2010
    • Errata 1, December 2014
  • Spec 20A, Carbon Steel, Alloy Steel, Stainless Steel, and Nickel Base Alloy Castings for Use in the Petroleum and Natural Gas Industry, 1st Edition, March 2012
    • Addendum 2, April 2015 (includes changes from Addendum 1)
    • Errata 1, August 2015
  • Spec 20B, Open Die Shaped Forgings for Use in the Petroleum and Natural Gas Industry, 1st Edition, April 2013
    • Errata 1, December 2013
  • Std 20D, Nondestructive Examination Services for Equipment Used in the Petroleum and Natural Gas Industry, 1st Edition, September 2013
    • Addendum 1, October 2016
  • Spec 20E, Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries, 1st Edition, August 2012
    • Errata 1, October 2014
  • Std 53, Blowout Prevention Equipment Systems for Drilling Wells, 4th Edition, November 2012
    • Addendum 1, July 2016
  • RP 65, Cementing Shallow Water Flow Zones in Deep Water Wells, 1st Edition, September 2002
    • Errata 1, August 2003
  • RP 92U, Underbalanced Drilling Operations, 1st Edition, November 2008
    • Addendum 1, November 2015
  • API RP 1626, Storing and Handling Ethanol and Gasoline-ethanol Blends at Distribution Terminals and Filling Stations, 2nd Edition, August 2010
    • Errata 1, February 2011
    • Addendum 1, August 2012
  • MPMS Chapter 2.2E, Petroleum and Liquid Petroleum Products—Calibration of Horizontal Cylindrical Tanks, Part 1: Manual Methods, 1st Edition, April 2004
    • Errata 1, November 2009
  • MPMS Chapter 3.6, Tank Gauging—Measurement of Liquid Hydrocarbons by Hybrid Tank Measurement, 1st Edition, February 2001
    • Errata 1, September 2005
  • MPMS Chapter 4.2, Proving Systems—Displacement Provers, 3rd Edition, September 2003
    • Addendum 1, February 2015
  • MPMS Chapter 4.6, Proving Systems—Pulse Interpolation, 2nd Edition, May 1999
    • Errata 1, April 2007
  • MPMS Chapter 4.9.4, Proving Systems—Methods of Calibration for Displacement and Volumetric Tank Provers, Part 4—Determination of the Volume of Displacement and Tank Provers by the Gravimetric Method of Calibration, First Edition, October 2010   
    • Errata 1, August 2016
  • MPMS Chapter 5.1, General Considerations for Measurement by Meters, 4th Edition, October 2005
    • Errata 1, June 2008
    • Errata 2, June 2011
  • MPMS Chapter 5.3, Metering—Measurement of Liquid Hydrocarbons by Turbine Meters, 5th Edition, September 2005
    • Addendum 1, July 2009
  • MPMS Chapter 5.4, Accessory Equipment for Liquid Meters, 4th Edition, September 2005
    • Errata 1, May 2015
  • MPMS Chapter 5.8, Measurement of Liquid Hydrocarbons by Ultrasonic Flow Meters, 2nd Edition, November 2011
    • Errata 1, February 2014
  • MPMS Chapter 7, Temperature Determination, 1st Edition, June 2001
    • Addendum 1, October 2011
  • MPMS Chapter 8.3, Sampling—Standard Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products, 1st Edition, October 1995
    • Errata 1, March 1996
  • MPMS Chapter 10.4, Determination of Water and/or Sediment in Crude Oil by the Centrifuge Method (Field Procedure), 4th Edition, October 2013
    • Errata 1, March 2015
  • MPMS Chapter 11.1, Temperature and Pressure Volume Correction Factors for Generalized Crude Oils, Refined Products, and Lubricating Oils, May 2004
    • Addendum 1, September 2007
  • MPMS Chapter 11.2—Physical Properties Data, Part 4—Temperature Correction for the Volume of NGL and LPG Tables 23E, 24E, 53E, 54E, 59E, and 60E, 1st Edition, September 2007
    • Errata 1, September 2011
  • MPMS Chapter 11.4—Properties of Reference Materials, Part 1—Density of Water and Water Volumetric Correction Factors for Water Calibration of Volumetric Provers, 1st Edition, December 2003
    • Errata 1, September 2011
  • MPMS Chapter 11.5—Density/Weight/Volume Intracoversion, Part 1—Conversions of API Gravity at 60 °F, 1st Edition, March 2009
    • Errata 1, September 2011 (Updated, September 2013)
  • MPMS Chapter 12, Calculation of Petroleum Quantities
    • Addendum 1, August 2007
  • MPMS Chapter 12.1.1/EI HM 1 Part 1, Calculation of Static Petroleum Quantities—Upright Cylindrical Tanks and Marine Vessels, 3rd Edition, April 2012
    • Errata 1, May 2015
  • MPMS Chapter 12.2, Calculation of Petroleum Quantities Using Dynamic Measurement Methods and Volumetric Correction Factors, Part 1—Introduction, 2nd Edition, May 1995; Part 4—Calculation of Base Prover Volumes by Waterdraw Method, 1st Edition, December 1997; Part 5—Calculation of Base Prover Volume by Master Meter Method, 1st Edition, September 2001
    • Errata 1, July 2009
  • MPMS Chapter 13.1, Statistical Concepts and Procedures in Measurements, 1st Edition, June 1985
    • Errata 1, July 2013
  • MPMS Chapter 13.2, Statistical Aspects of Measuring and Sampling—Methods of Evaluating Meter Proving Data, 1st Edition, November 1994
    • Errata 1, October 2015
  • MPMS Chapter 14.3.1, Orifice Metering of Natural Gas and Other Related Hydrocarbon Fluids—Concentric, Square-edged Orifice Meters, Part 1—General Equations and Uncertainty Guidelines, 4th Edition, September 2012
    • Errata 1, July 2013
  • MPMS Chapter 14.6, Natural Gas Fluids Measurement—Continuous Density Measurement, 2nd Edition, April 1991
    • Errata 1, August 1998
  • MPMS Chapter 17.2, Marine Measurement—Measurement of Cargoes On Board Tank Vessels, 2nd Edition, May 1991
    • Errata 1, April 2000
  • MPMS Chapter 17.3, Marine Measurement—Guidelines for Identification of the Source of Free Waters Associated with Marine Petroleum Cargo Movements, 1st Edition, April 1992
    • Errata 1, November 1992
  • MPMS Chapter 17.9/EI HM 49, Vessel Experience Factor (VEF), 2nd Edition, May 2012
    • Addendum 1, January 2014
  • MPMS Chapter 19.4, Evaporative Loss Reference Information and Speciation Methodology, 3rd Edition, October 2012
    • Addendum 1, November 2013
  • MPMS Chapter 20.1, Allocation Measurement, 1st Edition, September 1993
    • Addendum 1, January 2013
  • RP 85, Use of Subsea Wet-gas Flowmeters in Allocation Measurement Systems, 1st Edition, March 2003
    • Addendum 1, January 2013
  • RP 1102, Steel Pipelines Crossing Railroads and Highways, 7th Edition, December 2007
    • Errata 5, March 2014 (includes changes from Errata 1–4)
  • Std 1104, Welding of Pipelines and Related Facilities, 21st Edition, September 2013
    • Addendum 1, July 2014
    • Errata 4, November 2015 (includes changes from Errata 1–3)
    • Addendum 2, May 2016
  • RP 1109, Marking Liquid Petroleum Pipeline Facilities, 4th Edition, October 2010
    • Errata 1, November 2010
  • RP 1117, Recommended Practice for Movement of In-service Pipelines, 3rd Edition, July 2008
    • Errata 1, December 2008
    • Errata 2, August 2009
  • RP 1160, Managing System Integrity for Hazardous Liquid Pipelines, 2nd Edition, September 2013
    • Errata 1, September 2013
  • RP 500, Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Division 1 and Division 2, 3rd Edition, December 2012
    • Errata 1, January 2014
  • Std 526, Flanged Steel Pressure-relief Valves, 6th Edition, April 2009
    • Errata 1, May 2009
    • Errata 2, October 2012
  • Std 602, Gate, Globe, and Check Valves for Sizes DN 100 (NPS 4) and Smaller for the Petroleum and Natural Gas Industries, 10th Edition, May 2015
    • Errata 1, September 2016
  • Std 610, Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries, 11th Edition, September 2010
    • Errata 1, July 2011
  • Std 611, General-purpose Steam Turbines for Petroleum, Chemical, and Gas Industry Services, 5th Edition, March 2008
    • Errata 1, May 2008
  • Std 613, Special Purpose Gear Units for Petroleum, Chemical and Gas Industry Services, 5th Edition, February 2003
    • Errata 1, December 2005
  • Std 614, Lubrication, Shaft-sealing and Oil-control Systems and Auxiliaries, 5th Edition, April 2008
    • Errata 1, May 2008
  • Std 617, Axial and Centrifugal Compressors and Expander-compressors, 8th Edition, September 2014
    • Errata 1, August 2016
  • Std 618, Reciprocating Compressors for Petroleum, Chemical, and Gas Industry Services, 5th Edition, December 2007
    • Errata 1, November 2009
    • Errata 2, July 2010
  • Std 620, Design and Construction of Large, Welded, Low-pressure Storage Tanks, 12th Edition, October 2013
    • Addendum 1, November 2014
  • Std 625, Tank Systems for Refrigerated Liquefied Gas Storage, 1st Edition, August 2010
    • Addendum 1, July 2013
    • Addendum 2, November 2014
  • Std 650, Welded Tanks for Oil Storage, 12th Edition, March 2013
    • Errata 1, July 2013
    • Addendum 1, September 2014
    • Errata 2, December 2014
    • Addendum 2, January 2016
  • RP 652, Linings of Aboveground Petroleum Storage Tank Bottoms, 4th Edition, September 2014
    • Errata 1, August 2016
  • Std 672, Packaged, Integrally Geared Centrifugal Air Compressors for Petroleum, Chemical and Gas Industry Services, 4th Edition, March 2004
    • Errata 1, October 2007
    • Errata 2, July 2010
  • Std 674, Positive Displacement Pumps—Reciprocating, 3rd Edition, December 2010
    • Errata 1, May 2014
    • Errata 2, April 2015
  • Std 675, Positive Displacement Pumps—Controlled Volume for Petroleum, Chemical, and Gas Industry Services, 3rd Edition, November 2012
    • Errata 1, June 2014
    • Errata 2, April 2015
  • Std 685, Sealless Centrifugal Pumps for Petroleum, Heavy Duty Chemical, and Gas Industry Services, 1st Edition, October 2000
    • Errata, October 2007
  • RP 932-B, Design, Materials, Fabrication, Operation, and Inspection Guidelines for Corrosion Control in Hydroprocessing Reactor Effluent Air Cooler (REAC) Systems, 2nd Edition, March 2012
    • Errata 1, January 2014
  • RP 934-A, Materials and Fabrication of 2 ¼Cr-1Mo, 2 ¼Cr-1Mo-¼V, 3Cr-1Mo, and 3Cr-1Mo-¼V Steel Heavy Wall Pressure Vessels for High-temperature, High-pressure Hydrogen Service, 2nd Edition, May 2008
    • Addendum 1, February 2010
    • Addendum 2, March 2012