During the operation of many hydrocarbon industry plants, there is the need to control process

Conditions by venting gases and/or liquids.

As a general rule, process equipment, tanks, and other vessels have two complementary venting requirements:

Normal Process – to provide normal venting while the process is functioning as intended in one of the normal operating phases.

Emergency – to protect equipment and personnel from the effects of excessive pressure or Vacuum caused by an abnormal condition (fires, runaway reactions, . . .) that cannot be

Controlled by the basic process controls or the safety instrumented system (interlocks)

Emergency vent header systems are safety systems that safely dispose of vent gases resulting from unintended events outside the range of normal operations (like external fire, runaway

reactions, human error, equipment, and instrumentation failures

Flare systems are the last protection layers in chemical industries. Optimum designing of the flare systems components make depressurization as a reliable provision in the critical circumstances. Flare headers are one of the most important components in the system and they have been sized by FLARENET Software. Proper assessment of results, checking and modifying input data and optimization of the flare header sizes are vital to have the most reliable layer in safety reviews.