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BSI 21/30395664 DC:2021 Edition

BSI 21/30395664 DC:2021 Edition

$13.70

BS ISO 14839-5. Mechanical vibration. Vibration of rotating machinery equipped with active magnetic bearings – Part 5. Touch-down bearings

Published By Publication Date Number of Pages
BSI 2021 50
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This document gives guidance for the identification of the following:

  1. The typical architectures of touch-down bearing systems to show which components are likely to comprise such systems and which functions these components provide;

  2. The functional targets required of touch-down bearing systems so that clear performance targets can be formed for touch-down bearing systems with an unambiguous terminology for such performance targets;

  3. Elements to be considered in the design of the dynamic system such that rotordynamic performance can be optimized, both on touch-down bearings and on active magnetic bearings (AMBs);

  4. The environmental factors that have significant impact on touch-down bearing system performance allowing optimization of overall machine design;

  5. The AMB operational conditions that can give rise to contact within the touch-down bearing system so that such events can be considered as part of an overall machine design. It also considers failure modes within the AMB system that can give rise to a contact event. This ensures that the specification of the touch-down bearings covers all operational requirements;

  6. The most commonly encountered failure modes within the touch-down bearings and typical mechanisms for managing these limitations;

  7. Typical elements of a design process for touch-down bearing systems including the specification of load requirements, the sizing process, the analytical and simulation methods employed for design validation;

  8. The parameters associated with acceptance testing of touch-down bearing systems which are considered during the design of such tests. This includes the test conditions and associated instrumentation to ensure successful execution of such testing;

  9. The condition monitoring and inspection methods that will allow the status of in-service touch-down bearings to be evaluated and corrective actions to be taken when necessary;

  10. The factors to be considered when designing the maintenance regime for a touch-down bearing system. This includes actions to be undertaken following specified events together with any actions performed on a regular basis;

  11. The factors to be considered regarding other life cycle topics such as obsolescence management, de-commissioning, disposal and training.

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BSI 21/30395664 DC
$13.70