Dynamic simulation of fire relief rate of PSV on pressure vessel

A full dynamic production model of pressure vessel was developed using HYSYS Dynamics^TM by taking a gas field slug catcher as an example. The PSV relieving of slug catcher with different initial pressure and liquid level on external pool fire scenario was studied by the dynamic model. The results showed that initial conditions affected the PSV relief rate significantly. The affection of initial conditions should be considered sufficiently when calculating the maximum PSV relief rate, so as to provide correct basic parameter in PSV sizing and selecting.