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Hazardous material storage with sumps

Pollution Prevention Guidelines

Storage & handling of drums & intermediate bulk containers: PPG 26

These notes are intended to assist all who deal with the storage and handling of drums and Intermediate Bulk Containers (IBCs). The guidelines are basic requirements to protect the environment. Additional requirements may be imposed by legislation such as the Environmental Protection Act 1990 and the Environment Act 1995. In England, the storage of oils (except waste mineral oils) in containers over 200 litres in capacity, on industrial, commercial and institutional sites, is subject to specific regulations (Reference 1). Similar regulations are expected to be introduced in Scotland during 2004 and may follow in Northern Ireland and Wales. Further advice may be obtained by contacting your local Agency office, details of which appear at the end of these guidelines. These notes have been produced by the Environment Agency for England and Wales, the Scottish Environment Protection Agency and the Environment and Heritage Service in Northern Ireland, which are referred to here as the Agency or Agencies.

Secondary containment systems

A secondary containment system is designed to catch leaks from the primary container or spillages when in use. A suitable secondary containment system should be provided, as this will significantly reduce the risk of a spill resulting in pollution. It will also allow the controlled recovery or treatment of any spilled material, and may prevent the spread of burning liquids. Containment methods include a bund (which can be around, or incorporated into, a storage facility), a drip tray, kerbs and any other system that will prevent a spilled product escaping. The system chosen will depend on factors such as site sensitivity, existing on-site facilities and operational needs, the quantities and nature of materials stored, and their location within the site.

Regulations

Equipment for storing water hazardous of flammable liquids must be used by trained operators in accordance with the UK Guidelines PPG 26 and water Resources Act 1991. Consideration must also be given to DSEAR and COSHH.

Sumps

A sump must be able to retain the content of 110% of the largest container stored or 25% of the volume stored, whichever is greater. Some water protection areas can require sumps to contain larger volumes – ie. Agri chemicals require 185% of the largest container. Please check with the local authority to be sure.