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Recent content by babak.darmanzadehgmailcom

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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    This information was read from the parallel pump, which works fine. It has a suction pressure of 0.4 bar and a discharge pressure of 7 bar (100 psi). It is a different pump with a 35 m head. The shaking pump is off now because of bearing failure. But when both are on, the total flow reaches...
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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    Thanks a lot. I've learned from your answers. It's confusing because I'm not an expert yet. There is a disposal tank with a normal water height of around 10 meters (maximum 14 meters) of salty water. Approximately 150 meters of piping with many connections and direction changes, including two...
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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    My apologies for the delayed response. To clarify, there is no balance line in this system. The photo shows the entire setup. There is a drain at the bottom, but it is not visible in the image. Is it plan 31 (plan 11 with cyclone)or balance line?
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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    Mpa istead of Kpa to Bar was my fault .thank you. Here the exact numbers and units from datasheet. I doubt the accuracy of the vendor's use of 'Kpa'.
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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    Here are the exact details of curve for water at 68°F (20°C).
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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    The pump is operating under the following conditions: * Suction pressure: 1 bar * Discharge pressure: 34 bar * Flow rate: 40 m³/h to 60 m³/h non-drive end (NDE) bearing overheating and tripped after approximately one hour of operation. This has happened last time, with the previous incident...
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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    Over the coming days, I plan to collect additional data. For reference, there's a similar, but smaller, pump operating alongside. This smaller pump suction at 6 psi and discharge at 100 psi. It handles a flow rate of roughly 9,000 to 11,000 barrels per day (equivalent to 60 to 73 cubic meters...
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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    I didn't see a balance line on this pump. Is it possible that the impellers are arranged in a way that cancels out the axial thrust, preventing high loads on the bearings?
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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    Fixed speed. No bypass line. It's highly possible the minimum flow is reached and operators told me flow of another pump with similar duty.
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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    I Added more info. Next week I will provide vibration analysis too.
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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    I added more information. Hope it could hrlp for better understanding.
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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    Sorry for lack of information. I tried to add more detail in a reply to my first post.
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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    Sorry for lack of information. I tried to add more detail in a reply to my first post.
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    Troubleshooting High Vibrations in API 610 Multistage Pump Operating with Saltwater

    Sorry for lack of information. I would like to add full detail here. Pump Type: API 610 BB3, axially split, 6 stages with 6 impeller vanes and 8 diffuser vanes (similar to Baker Hughes MSN BB3) Mechanical Seal: API 682 Plan 31 Operating Conditions: * Suction Pressure: Fluctuates between 10-15...

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