Pinpoint where gas or vapor could escape (valves, flanges, pumps).
The CEI 31-35 standard, also known as "Guide for the application of IEC 61508 and IEC 61511 in the petroleum, petrochemical and natural gas industries", provides guidance on the application of functional safety standards IEC 61508 and IEC 61511 in the process industries. This report summarizes the key points of the CEI 31-35 PDF.
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Identifying where the gas can escape (continuous, primary, or secondary grades of release).
An area where an explosive gas atmosphere is likely to occur in normal operation occasionally. Pinpoint where gas or vapor could escape (valves,
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A place in which an explosive atmosphere is not likely to occur in normal operation but, if it does occur, will persist for a short period only.
By combining the release rate of the substance, its physical properties (like density and boiling point), and the local ventilation parameters, the CEI 31-35 guide allows engineers to calculate the precise distance (