23
1.6.1. Normal operations
Fugitive emissions
Media
Gas
Origin
Valves, pump seals, flanges, open-ended valves, relief valves,
compressor seals, drains, sample connections.
Destination
Diffuse in the atmosphere
Quantity
Can be estimated with the Average Factor Method
Composition
VOCs, sulfur compounds
Fugitive emissions are not negligible. They can be estimated thanks to the Average Factor
Method which is explained in part A of this report.
Gas relieves
Media
Gas
Origin
Relief valves
Destination
Flare and then atmosphere
Quantity
?
Composition
CO
2
, VOCs, SOx, NOx
Off-gases
Media
Gas
Origin
Separator and reflux drums
Destination
Sour gas treatment or sulfur recovery units
Quantity
Can be known from material balance
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