Provides the findings of additional research to further extend the dispersion modelling and calculation basis of EI Model Code of Safe Practice Part 15 Area classification code for installations handling flammable fluids (EI 15). It focuses on the following technical issues:
Given that the new research augments, but does not invalidate, several technical issues in the first edition, and that no further technical work has been carried out on other work items, the first edition of the report is entirely replicated as Addendum 1.
The findings of the report will be reviewed by the Energy Institute's Area Classification Working Group to see how the new research affects the continuing technical integrity of pertinent aspects of the third edition of EI 15.
The information in this publication should assist process safety engineers, safety advisors, designers, or others with responsibility for hazardous area classification to better determine the extent of hazardous areas in a consistent manner for specific fluid and process, weather and environment dependent values. The information is internationally applicable provided it is read, interpreted and applied in conjunction with relevant national and local requirements.
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