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eLibrary > BS ISO 20816-5:2018 Mechanical vibration. Measurement and evaluation of machine vibration - Machine sets in hydraulic power generating and pump-storage plants >

BS ISO 20816-5:2018 Mechanical vibration. Measurement and evaluation of machine vibration - Machine sets in hydraulic power generating and pump-storage plants, 2018

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BS ISO 20816-5:2018 Mechanical vibration. Measurement and evaluation of machine vibration - Machine sets in hydraulic power generating and pump-storage plants, 2018

National foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Machine arrangements
5 Measurement procedures and conditions [Go to Page]
5.1 General [Go to Page]
5.1.1 Bearing housing vibration measurements
5.1.2 Shaft vibration measurements
5.2 Measurement types [Go to Page]
5.2.1 Absolute bearing housing vibration
5.2.2 Radial shaft vibration
5.2.3 Bearing and shaft vibration in the axial direction
5.2.4 Detrimental influences
5.3 Measurement locations and directions [Go to Page]
5.3.1 General
5.3.2 Measurement of relative shaft vibration
5.3.3 Measurement of the absolute bearing housing vibration
5.4 Measurement equipment [Go to Page]
5.4.1 General
5.4.2 Absolute bearing housing vibration measurements
5.4.3 Shaft vibration measurement
5.4.4 Measurement of Smax or Sp–p
5.5 Operational conditions
6 Evaluation of vibration measurements [Go to Page]
6.1 General [Go to Page]
6.1.1 Basis of the vibration values
6.1.2 Effect of turbine operating conditions on bearing housing vibration measurements
6.1.3 Effect of turbine operating conditions on shaft vibration
6.1.4 Pump operating conditions
6.1.5 Special operating conditions
6.2 Criterion I: Vibration magnitude
6.3 Criterion II: Change in vibration magnitude and phase [Go to Page]
6.3.1 Assessment criteria
6.3.2 Monitoring prerequisites
6.3.3 Specific recommendation related to the generator
6.4 Operational limits [Go to Page]
6.4.1 Alarms and trips
6.4.2 Setting of alarms
6.4.3 Setting of trips
6.4.4 Special operating conditions
6.5 Comparison of results for shaft vibration and bearing housing vibration
6.6 Evaluation based on vibration vector information
Annex A (normative) Evaluation zone boundaries
Annex B (informative) Vibration monitoring — Prerequisite for trend analysis
Annex C (informative) Special features of bearing housing vibration and shaft vibration of hydraulic machine sets
Annex D (informative) Database, analysis procedure and statistical evaluation
Annex E (informative) Recommended practice for vibration data processing
Bibliography [Go to Page]

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BS ISO 20816-5:2018 Mechanical vibration. Measurement and evaluation of machine vibration - Machine sets in hydraulic power generating and pump-storage plants, 2018

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