EI Model code of safe practice Part 15: Area classification code for installations handling flammable fluids

Providing a demonstrable methodology for determining hazard radii, and applicable to all installations handling flammable fluids. EI15 gives guidance on the classification of regions around equipment handling or storing flammable fluids, and a basis for both the correct selection of fixed electrical equipment and the location of other fixed sources of ignition in those areas.

Updates from the 3^rd edition include:

• Further details on Hazard Radii from liquid pool spills
• Hazard Radii for some LNG releases
• More detail on the risk based approach methodology and emphasis on the point source approach.
• Revised equivalent hole sizes for frequency bands (LEVEL I - III) and expanded guidance on ventilation and releases within enclosed areas, based on evidential data from the UK HSE.
• Amended, or more detailed, definitions of terms such as adequate ventilation, grades of release and limits of applicability.

The revised information provided in EI15 may therefore lead to a reduction in the size of some zone areas, enabling potential cost savings to operators and contractors.