ISO 7919-4 (2nd Edition, 2009)

Mechanical vibration - Evaluation of machine vibration by measurements on rotating shafts - Part 4 : Gas turbine sets with fluid-film bearings

 

이 규격은 출력 3MW를 초과하고, 축 회전속도 3,000rpm에서 30,000rpm 범위에 있는 유막 베어링을 채택하는 Gas turbine의 현장에서 측정된 진동 평가에 사용된다.

 

[ ISO 7919-4, Vibration Limit ]

 

○ Zone A : Newly commissioned machine

○ Zone B : This zone is considered as acceptable level for unrestricted long-term operation

○ Zone C : Normally considered unsatisfactory for long-term operation

○ Zone D : Normally considered to be sufficient severity to cause mechanical damage