Draft Revisions to AP-42 Chapter 7, Section 1 - Organic Liquid Storage Tanks
Introduction
This draft section presents procedures for estimating air emissions from organic liquid storage tanks. It also contains detailed descriptions of typical varieties of such tanks, including horizontal, vertical, and underground fixed roof tanks, and internal and external floating roof tanks.
The emission estimation equations presented herein have been developed by the American Petroleum Institute (API), which retains the legal right to these equations. API has granted EPA permission for the nonexclusive, noncommercial distribution of this material to governmental and regulatory agencies. However, API reserves its rights regarding all commercial duplication and distribution of its material. Hence, the material presented is available for public use, but it cannot be sold without written permission from both the American Petroleum Institute and the U. S. Environmental Protection Agency.
The EPA offered a public review period that ended April 30, 2024.
Draft Chapter 7, Section 1 - Organic Liquid Storage Tanks
Draft AP-42 Chapter 7, Section 7.1 - Organic Liquid Storage Tanks (pdf)
Red Line Strike Out AP-42 Chapter 7, Section 1 - Organic Liquid Storage Tanks (pdf)
Summary of Changes AP-42 Chapter 7, Section 1 - Organic Liquid Storage Tanks (pdf)
TANKS 5.0 - Beta Version
EPA released TANKS 5.0 for beta testing. The TANKS 5.0 application is located here: https://TANKS.app.cloud.gov. More information can be found here: https://www.epa.gov/air-emissions-factors-and-quantification/tanks-emissions-estimation-software-version-5. Comments on the application were accepted through April 30, 2024. The beta testing and comment period have concluded, but the beta version of the application remains available as we work on programming updates that will be included in the final version of the application. This beta version is feature-complete, but may still contain bugs, performance issues, or cause crashes. To receive notifications related to application updates, sign up for the CHIEF Listserv by sending an e-mail to join-chief@lists.epa.gov.
The TANKS 5.0 User Guide (pdf) explains each screen and defines the parameters entered into TANKS 5.0.