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Thanks Gents for your insights! I should have clarified: a) This is a constructed plant b) No new design modifications like installing PSV look appealing at this moment c) The check valves at the inlet of the Column are so called high integrity dissimilar valves And last but not the least d)...

Thanks Gents for your analysis! Agree that this is high severity of consequence but low likelihood scenario. I realised that the spec break should have been in the suction of lean amine pump. There is no provision for PSV on suction of the pump. But the Amine Regenerator Column from which the...

We have a scheme where Lean Amine Pump discharges to a high pressure Amine Contactor. There is dual check valve near the amine inlet to column to prevent high pressure gas back flow to amine circuit in case of lean amine pump trip. In the HAZOP analysis, a scenario came where the lean amine...