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DIN/VDI Standards Committee Acoustics, Noise Control and Vibration Engineering

Abstract

The document provides specific guidance for assessing the severity of vibration measured on both the bearing housings and the shafts of gas turbines, steam turbines and generators in situ. The criteria provided in this document apply to land-based gas turbines, steam turbines and generators with power outputs greater than 40 MW and a normal operating speed of 1 500 r/min, 1 800 r/min, 3 000 r/min or 3 600 r/min. This document provides specific guidance for evaluating the severity of in-situ, broad-band vibration measured radial (i.e. transverse) to the shaft axis on all main bearing housings or pedestals or on the shaft and in the axial direction on thrust bearings. Two criteria are provided for assessing the machine vibration when operating under steady state conditions. One criterion considers the magnitude of the observed vibration; the second considers changes in the magnitude. In addition, different criteria are provided for transient operating conditions, such as run-up and run-down. The evaluation criteria in this document are not applicable to the vibrations caused by electromagnetism, which can occur at twice line frequency at the generator stator core and housing.

Begin

2023-06-26

Planned document number

DIN ISO 20816-2

Project number

00101160

Responsible national committee

NA 001-03-03 AA - Measurement and evaluation of vibration of machines  

Responsible international committee

ISO/TC 108/SC 2/WG 1 - Rotordynamics and vibration of machines  

draft standard

Mechanical vibration - Measurement and evaluation of machine vibration - Part 2: Land-based gas turbines, steam turbines and generators in excess of 40 MW, with fluid-film bearings and rated speeds of 1500 r/min, 1800 r/min, 3000 r/min and 3600 r/min - Amendment 1 (ISO 20816-2:2017/DAM 1:2023); Text in German and English
2024-02
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previous edition(s)

Mechanical vibration - Measurement and evaluation of machine vibration - Part 2: Land-based gas turbines, steam turbines and generators in excess of 40 MW, with fluid-film bearings and rated speeds of 1500 r/min, 1800 r/min, 3000 r/min and 3600 r/min (ISO 20816-2:2017)
2018-01