Recommended Practices & Exams

PEI began publishing technical manuals in 1986 with the introduction ofRecommended Practices for Installation of Underground Liquid Storage Systems, PEI/RP100. Since then, the association has written several additional manuals and developed online tests for each document.

These heavily researched, peer-reviewed technical documents address the biggest operational issues facing the industry. Recommended practices and procedures are reviewed and revised on a regular basis to reflect the latest technologies and industry trends.

The manuals are used by industry regulators, fire marshals and code officials, as well as industry-related associations. The manuals are available for purchase by anyone with an interest in the petroleum equipment and liquid-handling industry.

Petroleum Equipment Institute Publications Store

To purchase individual tests or an annual subscription (members only) visit

To learn more about any of the recommended practices, to purchase or to comment on a document, click the links below.


All Recommended Practices are now available in electronic format through our partner, Techstreet. Order print, PDF or save with a combination. 


PEI now offers tests for most of our technical publications.

To learn more visit the PEI Learning Center...