Security Risk Assessment Methodology for the Petroleum and Petrochemical Industries, FIrst Edition
standard by American Petroleum Institute, 05/01/2013

Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone 0, Zone 1, and Zone 2
standard by American Petroleum Institute, 11/01/1997

Model Risk Management Guidance for Petroleum Refineries, 3rd Edition
standard by American Petroleum Institute, 02/01/2001

Specifications for Pumping Units, Eighteenth Edition, Includes Errata (2009)
standard by American Petroleum Institute, 11/01/2008

Compressibility Factors for Hydrocarbons: 350-637 Relative Density (60 deg. F/60 deg. F) and -50 deg. F to 140 deg. F Metering Temperature. Second Edition. Includes Errata.
Handbook / Manual / Guide by American Petroleum Institute, 10/01/1986

Pressure Vessel Inspection Code: In-Service Inspection, Rating, Repair, and Alteration, Tenth Edition, Includes Addendum 1 (May 2017), Addendum 2 (March 2018)
standard by American Petroleum Institute, May 2014

Guide to Advanced Control Systems, First Edition
standard by American Petroleum Institute, 12/01/2000

In-Situ Air Sparging, 1st Edition
Amendment by American Petroleum Institute, 07/01/1996

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, First Edition (Identical to ISO 10400:2007), Includes Addendum
standard by American Petroleum Institute, 12/01/2008

Proving Systems: Master-Meter Provers
Handbook / Manual / Guide by American Petroleum Institute, 05/01/2000