Fireproofing of PSVs

[hg_55]

In what cases PSVs designed for fire cases can be fireproofed? Our process engineers have recommended us to apply fireproofing on some PSVs. What can be the driving factors?

[luca]

Some facilities require equipment to remain functional for 30 minutes, 60 minutes, 120 minutes, depending on evacuation philosophy.
If a PSV is needed to continue relieving pressure during prolonged fire exposure, fireproofing may help preserve its mechanical integrity.