I found some design instructions for flare stack. hope it helpful.
1. flare stack location should be upwind direction of processing unit.
2. knock-out drum should be close to flare stack, so that their distance could be the shortest.
3. area within 60meter from flare stack shouldn’t have any public road or other facility (except knock-out drum) to avoid flare flare heat radiation.
4. flare stack should have slope and drain.
5. purge steam line should do stress analysis to decide the location of anchor and support.
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Regards.
Charlie
