API Std 12R1:2025

API Std 12R1 PDF

This standard provides the minimum requirements to install, operate, maintain, inspect, repair, and reconstruct both new and existing tanks used in petroleum production service in a manner that includes best practices for tank facility safety, security, and environmental protection.  This standard is intended primarily for application to tanks fabricated to API Specifications 12B, 12D, 12F, and 12P, which are employed in onshore production services but may be applied to other tanks and services at the discretion of the owner/operator.

Annex G of this standard contains specific safety information applicable to tanks. For additional safety information, see other publications referenced within this standard.

Tanks in refineries, petrochemical plants, marketing bulk plants, and pipeline storage facilities operated by carriers are not within the scope of this standard.