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During STG hot commissioning upto what % speed level eccentricity value is meaningful and above that vibration should be given consideration?

Plant Commissioning Rolling Commissioning
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Question added by Muhammad Abbas , Project Director , ENI
Date Posted: 2014/12/23
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Deleted user
by Deleted user

hello,

we have 02 critical speed (turbomachine category 4), in the transitional phase between start speed (0 rpm/min or rotor bearing speed), and permanent phase (3000 rpm) ,at :

1- Approx 1000 rpm/min +/- 100 rpm/min

2- Approx 2000 rpm/min +/- 100 rpm/min

 

NB: 50HZ + absolute vibration

 

Kind regards.

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