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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
  • 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
  • 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
  • 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, August 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 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
  • Spec 20E, Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries, 1st Edition, August 2012
    • Errata 1, October 2014
  • 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/IP Spec 1581, Specifications and Qualification Procedures for Aviation Jet Fuel Filter/Separators, 5th Edition, July 2002
    • Addendum, December 2006
  • API RP 1626, Storing and Handling Ethanol and Gasoline-ethanol Blends at Distribution Terminals and Filling Stations, Second Edition, December 2007
    • Errata, February 2011
  • 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 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, 2nd 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 17.4, Marine Measurement—Method for Quantification of Small Volumes on Marine Vessels (OBQ/ROB), 1st Edition, October 1994
    • Errata 1, September 2004
  • 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, August 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, Third Edition, December 2012
    • Errata, January 2014
  • Std 521, Pressure-relieving and Depressuring Systems, 5th Edition, January 2007
    • Errata, June 2007
    • Addendum, May 2008
  • Std 526, Flanged Steel Pressure-relief Valves, 6th Edition, April 2009
    • Errata, May 2009
    • Errata 2, October 2012
  • Std 600, Steel Gate Valves—Flanged and Butt-welding Ends, Bolted Bonnets, 12th Edition, September 2009
    • Errata, November 2009
  • Std 607, Testing of Valves—Fire Type-testing Requirements, 5th Edition, June 2005
    • Errata, November 2008
  • Std 610, Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries, 11th Edition, September 2010
    • Errata, July 2011
  • Std 611, General-purpose Steam Turbines for Petroleum, Chemical, and Gas Industry Services, 5th Edition, March 2008
    • Errata, May 2008
  • Std 613, Special Purpose Gear Units for Petroleum, Chemical and Gas Industry Services, 5th Edition, February, 2003
    • Errata, November 2006
  • Std 614, Lubrication, Shaft-sealing and Oil-control Systems and Auxiliaries, 5th Edition, April, 2008
    • Errata, May 2008
  • Std 617, Axial and Centrifugal Compressors and Expander-compressors for Petroleum, Chemical and Gas Industry Services, 7th Edition, July 2002
    • Errata, June 2003
  • Std 618, Reciprocating Compressors for Petroleum, Chemical, and Gas Industry Services, Fifth Edition, December 2007
    • Errata, 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 Steel Tanks for Oil Storage, 12th Edition, March 2013
    • Errata 2, December, 2014
    • Addendum 2, January 2016
  • Std 672, Packaged, Integrally Geared Centrifugal Air Compressors for Petroleum, Chemical and Gas Industry Services, 4th Edition, March 2004
    • Errata, October 2007
    • Errata 2, July 2010
  • Std 673, Centrifugal Fans for Petroleum, Chemical and Gas Industry Services, 2nd Edition, January 2002
    • Errata, October 2002
  • Std 674, Positive Displacement Pumps—Reciprocating, Third Edition, December 2010
    • Errata 2, April 2015
  • Std 675, Positive Displacement Pumps—Controlled Volume for Petroleum, Chemical, and Gas Industry Services, Third Edition, November 2012
    • Errata 2, April 2015
  • Std 682, Pumps—Shaft Sealing Systems for Centrifugal and Rotary Pumps, 3rd Edition, September 2004
    • Errata, November 2006
  • 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, Second Edition, March 2012
    • Errata, January 2014
  • RP 934-A, Materials and Fabrication of 2 1/4Cr-1Mo, 2 1/4Cr-1Mo-1/4V, 3Cr-1Mo, and 3Cr-1Mo-1/4V Steel Heavy Wall Pressure Vessels for High-temperature, High-pressure Hydrogen Service, Second Edition, May 2008
    • Addendum 2, March 2012
  • RP 1111, Recommended Practice for the Design, Construction, Operation, and Maintenance of Offshore Hydrocarbon Pipelines (Limited State Design), Fourth Edition, December 2009
    • Errata, May 2011
  • Std 2000, Venting Atmospheric and Low-pressure Storage Tanks: Nonrefrigerated and Refrigerated, 5th Edition, April 1998
    • Errata, November 1999