ISO 7919 Mechanical vibration of non-reciprocating machines – Measurements on rotating shafts and evaluation criteria – Part 2: large land-based steam turbine generator sets

ISO 7919

Mechanical vibration of non-reciprocating machines – Measurements on rotating shafts and evaluation criteria – Part 2: large land-based steam turbine generator sets (2001 edition)

This part of ISO 7919 gives guidelines for applying evaluation criteria for shaft vibration under normal operating conditions, measured at or close to the bearings of steam turbine generator sets. These guidelines are presented in terms of both steady running vibration and any magnitude changes which may occur in these steady values. The numerical values specified are not intended to serve as the only basis for vibration evaluation since, in general, the vibratory condition of a machine is assessed by consideration of both the shaft vibration and the associated structural vibration.

This part of ISO 7919 applies to large land-based steam turbine generator sets for power stations, having rated speeds in the range 1500 r/min to 3600 r/min, and power outputs greater than 50 MW.

Contents:

1. Scope
2. Normative references
3. Measurement procedures
4. Evaluation criteria

Annex A

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