MyCommittees > Standards > CRE > SCHTE

 Subcommittee Scope

Welcome to the home page for the CRE Subcommittee on Heat Transfer Equipment (SCHTE). This site offers information on upcoming meetings, allows questions to be posted for the upcoming roundtable discussions, and provides information on the status of standards and due dates for documents managed by the SCHTE. Documents under development and revision are also available for review. Rosters may be posted for information and use among the subcommittee and should not be distributed outside of the members.

Mission: The SCHTE prepares, reviews and updates relevant standards, provides forums for keeping abreast of industry technology, maintains liaison activities with other standard-writing bodies, sponsors general interest sessions and provides the US input to related standards in ISO and IOGP.

SCHTE is divided into two main groups- fired and unfired equipement, with unfired comprised of tubular and non-tubular exchanger groups. 

The following documents are under the purview of the SCHTE:

Fired Standards

  • Std. 530 - Calculation of Heater Tube Thickness in Petroleum Refineries
  • RP 534 - Heat Recovery Steam Generators
  • RP 535 - Burners for Fired Heaters in General Refinery Services
  • Std. 536 - Post Combustion NOx Control for Equipment in General Refinery Services
  • *ANSI/API Std. 537 - Flare Details for General Refinery and Petrochemical Service
  • Std. 538 - Industrial Fired Boilers
  • *Std. 560 - Fired Heaters for General Refinery Services
  • Std. 561 - Reforming Furnaces for Hydrogen and Syngas Production (proposed new American National Standard)
  • Std. 565 - Thermal Reactors in Sulfur Recovery Units for General Refinery Services
Unfired Standards
  • Std. 660 - Shell-and-tube Heat Exchangers
  • Std. 661 - Petroleum, Petrochemical, and Natural Gas Industries--Air-cooled Heat Exchangers
  • Std. 663 - Hairpin-type Heat Exchangers
  • Std. 664 - Spiral Plate Heat Exchangers
  • Std. 667 - Plate & Frame Heat Exchangers for Gen. Refinery Services (proposed new Std. to replace Std. 662, Part 1)
  • Std. 668 - Brazed Aluminum Plate-fin HEs for Gen. Refinery Services (proposed new Std. to replace Std. 662, Part 2)
  • RP 669 - Heat Recovery Systems (proposed new Recommended Practice)
  • Std. 810 - Welded Plate-Block Heat Exchangers (proposed new American National Standard)

Tubular Exchanger: API 660, API 661, API 663, and API 669

Non-tubular ExchagerAPI 664, API 667, API 668, and API 810

*NOTE: ANSI/API Std. 537 and API Std. 560 are under continuous maintenance. Revision proposals may be submitted at any time for consideration and should be submitted through the API staff contact for the SCHTE, Jordan Strickler (​

Chair: Allen Miller, Shell Projects and Technology (US)
Vice-Chair: Eric Barta, Exxon Mobil
​Secretary: Sarah Radovcich, Fluor ​


The 2022 Spring API Refining and Equipment Standards Meeting will be held on May 16-20 in Chicago at the Hyatt Regency Chicago. 

Interested individuals can register here:

 API Contact

Jordan Strickler
Senior Specialist 
American Petroleum Institute
200 Massachusetts Avenue, NW
Washington, DC 20001
Phone: 202-682-8190​

ANSI Essential Requirements.pdf
3/16/2022 2:57
Antitrust Guide_Official.pdf
3/16/2022 2:56
API Antitrust Slide.pdf
3/16/2022 2:54
API Document Format and Style Manual_2020.pdf
3/16/2022 2:54
API Procedures for Standards Development-2022.pdf
4/7/2022 11:25
CRE Policy & Procedures_2021.pdf
3/16/2022 2:54
Standards Process Flowchart.pdf
3/16/2022 2:54

 Ballots and Draft Review

There are no items to show in this view.
Privacy Policy | Terms and Conditions | Legal Notices | Copyright - API. All rights reserved