BS ISO 21940-13:2012
$167.15
Mechanical vibration. Rotor balancing – Criteria and safeguards for the insitu balancing of medium and large rotors
| Published By | Publication Date | Number of Pages |
| BSI | 2012 | 34 |
This part of ISO 21940 specifies procedures to be adopted when balancing medium and large rotors installed in their own bearings on site. It addresses the conditions under which it is appropriate to undertake in-situ balancing, the instrumentation required, the safety implications and the requirements for reporting and maintaining records.
This part of ISO 21940 can be used as a basis for a contract to undertake in-situ balancing.
It does not provide guidance on the methods used to calculate the correction masses from measured vibration data.
NOTE The procedures covered in this part of ISO 21940 are suitable for medium and large machines. However, many of the principles are equally applicable to machines of a smaller size, where it is necessary to maintain good records of the vibration behaviour and the correction mass configurations.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 9 | 1 Scope 2 Normative references |
| 10 | 3 Terms and definitions 4 In-situ balancing 4.1 General 4.2 Reasons for in-situ balancing |
| 11 | 4.3 Objectives of in-situ balancing 5 Criteria for performing in-situ balancing |
| 12 | 6 Safeguards 6.1 Safety of personnel while operating close to a rotating shaft 6.2 Special operating envelope for in-situ balancing 6.3 Integrity and design of the correction masses and their attachments 6.4 Machinery-specific safety implications |
| 13 | 7 Measurements 7.1 Vibration measurement equipment 7.2 Measurement errors |
| 14 | 7.3 Phase reference signals 7.3.1 General 7.3.2 Information required for reproducible phase reference data 7.3.3 Phase data when using trial masses as the phase reference |
| 15 | 8 Operational conditions |
| 16 | 9 Reporting 9.1 General |
| 17 | 9.2 Report introduction 9.2.1 Background 9.2.2 Objective 9.2.3 Machine details 9.3 Vibration measurement equipment 9.4 Results 9.4.1 Measurement units 9.4.2 Correction masses |
| 18 | 9.4.3 Tabular data: Vibration results and correction mass configurations 9.4.4 Graphical data 9.4.4.1 Vibration vector changes 9.4.4.2 Vibration signatures 9.5 Text information 9.5.1 General 9.5.2 Discussion |
| 19 | 9.5.3 Conclusion 9.5.4 Recommendations |
