Abstract 

ISO 7919-4:2009 establishes provisions for evaluating the severity of in-situ, broad-band shaft vibration measured radial (i.e. transverse) to the shaft axis at, or close to, the main bearings. These are in terms of

- vibration under normal steady-state operating conditions;

- vibration during other (non-steady-state) conditions when transient changes are taking place, including run up or run down, initial loading and load changes;

- changes in vibration which can occur during normal steady-state operation.

ISO 7919-4:2009 is applicable to heavy-duty gas turbine sets used in electrical and mechanical drive applications, with fluid-film bearings, outputs greater than 3 MW and an operating speed range under load between 3 000 r/min and 30 000 r/min. This includes gas turbines coupled to other rotating machinery either directly or through a gearbox. In some cases, ISO 7919-4:2009 is not applicable to the evaluation of the vibration of the coupled equipment.


General information

  • Status :  Withdrawn
    Publication date : 2009-10
  • Edition : 2
    Number of pages : 14
  • :
    ISO/TC 108/SC 2
    Measurement and evaluation of mechanical vibration and shock as applied to machines, vehicles and structures
  • 17.160
    Vibrations, shock and vibration measurements
    27.040
    Gas and steam turbines. Steam engines

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