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Addenda (amendments) and errata for published API standards are available via the API Publications Store.
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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
Spec 4F, Specification for Drilling and Well Servicing Structures, 4th Edition, January 2013
Addendum 1, December 2016
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
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
Addendum 2, November 2016
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
