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Hi, Our heat exchanger specialist specified inconel overlay for tubesheets on the tube side which is hydrogen service. Is this necessary? The tubesheet and tubes are 1 1/4Cr. Thanks,

Hi all, I am looking for what standards to use for shell & tube heat exchangers. There are PIP standards VECST001/VESST002 for shell and tube heat exchangers. It has some overlaps with API 660 and some are not in API 660. My questions is: If I specify API 660 for the heat exchangers, do I...

The pump is used to increase the process condensate pressure for a preheater. The vendor is the client’s preferred vendor. The lower efficiency pump is RUHRPUMPEN. I don’t have the new quote for the pump that is below the 80% of the BEP yet. Thanks all for your help. I will check with other...

It is for process condensate in a fertilizer plant.

Thanks all for your responses. It is the client’s request to have API pumps as the pump is used in refinery plant. The second one is cheaper but my concern is that it is below 80%of BEP.

The differential head is 149m. The flow rate is 39.7m3/h. So even if the efficiency of the second pump is higher, but as it is outside of the 80-110% BEP range(69% of BEP), the electricity cost maybe higher? Why is there suction or discharge recirculation if the flowrates are low?

Hi all, I got a quote of a API 610 pump with an efficiency of 38%. I asked the vendor if there are any pumps with an higher efficiency. They have a pump with an efficiency of 48% at the given rate but it is below 80% of the BEP flow rates. What would be the problems if the flow rate is below...

Hi all, if the buffer/barrier fluid reservoir (seal plan 52) is designed to ASME Sec VIII, is a U stamp required?

Hi TenPenny, Thanks for your reply. We are buying a API610 centrifugal pump. I was asked if it needs API/ASME stamp. As I haven’t heard of this before, I assume it is to identify if the pump is an api standard pump or ansi/asme pump?

Hi all, is API stamp required for API pumps?