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Rules and Directives

Directive 055 Addendum: Interim Requirements for Aboveground Synthetically- Lined Wall Storage Systems, Updates to Liner Requirements, and Optional Diking Requirements for Single-Walled aboveground Storage Tanks

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Release Date: October 10, 2011

Purpose of this Directive

This directive sets out the requirements for the storage of materials produced, generated (including wastes), and used in the upstream petroleum industry.

The containment devices it applies to are aboveground and underground tanks, containers, lined earthen excavations, and bulk pads. It also applies to secondary containment, leak detection, spill prevention and loss control, and weather protection systems, as well as operating procedures, maintenance practices, and inspection programs for maintaining the containment systems.


see also Directive 055: Storage Requirements for the Upstream Petroleum Industry