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Non synchronous peak at ammonia booster pump

Non synchronous peak at ammonia booster pump

Non synchronous peak at ammonia booster pump

Dear Experts,

We are experiencing high vibration at ammonia booster pump. The spectrum shows dominant non-synchronous peak at 1.19 order. This pump has a double John crane mechanical seal (109B) in tandem arrangement. Is it something related with mechanial seal? Has anybody experienced any similar phenomenon in pump?

[Attached is the vibration report along with spectrums]

Your valuable comments, experiences are highly appreciated

Thanks in advance.

RE: Non synchronous peak at ammonia booster pump

The arrow points to the pump shaft, not the casing. Is this really a shaft measurement, or a casing measurement?

Do you have a strobe light? I'd tune the strobe to the frequency of interest and have a look at that region. Might find a component creeping around or something.

I was going to suggest you post over here, but looks like you beat me to it pipe

RE: Non synchronous peak at ammonia booster pump

Yes, Tmoose,this is a casing measurement.

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