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Hysys Depressuring Utility Pressure Question
#1
Posted 15 August 2025 - 04:20 AM
#2
Posted 16 August 2025 - 09:43 AM
I question whether API 521 guidelines apply to underground hydrogen storage. If you are convinced you must depressurize within 15 minutes, then you should justify your initial pressure assumptions by calculation and documentation. Why not estimate the different sections individually with different initial pressures?
#3
Posted 19 August 2025 - 07:17 AM
In general, initial pressure for the emergency case (fire/confirmed leak) will be design pressure for the non-compressor system. And for the compressor system settle-out condition will be considered as initial condition for the depressurization.
#4
Posted 19 August 2025 - 06:10 PM
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