Gas turbine driven sets excluding aircraft derivatives 1 Scope This part of ISO gives specific guidance for assessing the severity of vibration measured on the bearing housings or pedestals of gas turbine driven sets. One criterion considers the magnitude of the observed vibration the second considers changes in the magnitude. For gas turbines, the measurement system used shall be capable of measuring broad-band vibration over a frequency range from 10 Hz to at least six times the highest shaft rotational frequency. Criterion II is specified on the basis of the change in broad-band vibration magnitude occurring under steady-state operating conditions. The vibration criteria provided in this part of ISO apply to heavy-duty gas turbine sets. To provide a warning that a defined value of vibration has been reached or a significant change has occurred, at which remedial action may be necessary. Share your thoughts with other customers. Amazon Renewed Refurbished products with a warranty. If application of the different criteria leads to different assessments of vibration severity, the more restrictive zone classification generally applies unless there is significant experience to the contrary. Such changes can be instantaneous or progressive with time and may indicate incipient damage or some izo irregularity. BS ISO 10816-4:2009+A1:2017įor such cases and when peak rather than r. After a period of time, the steady-state baseline value will be established and 110816-4 ALARM setting should be adjusted accordingly. The values used will, therefore, generally be the same for all machines of similar design and would not normally be related to the steady-state baseline value used for setting ALARMS. ISO Mechanical vibration – Evaluation of machine vibration by measurements on non-rotating parts – Part 4: Gas turbine sets with fluid-film bearings. ISO MECHANICAL VIBRATION – EVALUATION OF MACHINE VIBRATION BY MEASUREMENTS ON NON-ROTATING PARTS – PART 4: GAS. Mechanical vibration - Evaluation of machine vibration by measurements on non-rotating parts.

Iso 10816 6 pdf