ISO 22266-1:2009 Mechanical vibration - Torsional vibration of rotating machinery - Part 1: Land-based steam and gas turbine generator sets in excess of 50 MW
This part of ISO 22266 provides guidelines for applying shaft torsional vibration criteria, under normal
operating conditions, for the coupled shaft system and long blades of a turbine generator set. In particular,
these apply to the torsional natural frequencies of the coupled shaft system at line and twice line frequencies
of the electrical network to which the turbine generator set is connected. In the event that torsional natural
frequencies do not conform with defined frequency margins, other possible actions available to vendors are
defined.
This part of ISO 22266 is applicable to
⎯ land-based steam turbine generator sets for power stations with power outputs greater than 50 MW and
normal operating speeds of 1 500 r/min, 1 800 r/min, 3 000 r/min and 3 600 r/min, and
⎯ land-based gas turbine generator sets for power stations with power outputs greater than 50 MW and
normal operating speeds of 3 000 r/min and 3 600 r/min.
Methods currently available for carrying out both analytical assessments and test validation of the shaft
system torsional natural frequencies are also described.
ISO 22266-1:2009 Referenced Document
ISO 2041 Mechanical vibration, shock and condition monitoring - Vocabulary*, 2018-10-01 Update
ISO 2710-1 Reciprocating internal combustion engines - Vocabulary - Part 1: Terms for engine design and operation*, 2017-10-31 Update
ISO 2710-2 Reciprocating internal combustion engines — Vocabulary — Part 2: Terms for engine maintenance*, 2019-03-12 Update
ISO 22266-1:2009 history
2022ISO 22266-1:2022 Mechanical vibration — Torsional vibration of rotating machinery — Part 1: Evaluation of steam and gas turbine generator sets due to electrical excitation
2009ISO 22266-1:2009 Mechanical vibration - Torsional vibration of rotating machinery - Part 1: Land-based steam and gas turbine generator sets in excess of 50 MW