STANDARD. ISO. Second edition. Mechanical vibration — Evaluation of machine vibration by measurements on non-rotating parts —. ISO MECHANICAL VIBRATION – EVALUATION OF MACHINE VIBRATION BY MEASUREMENTS ON NON-ROTATING PARTS – PART 4: GAS. ISO Mechanical vibration – Evaluation of machine vibration by measurements on non-rotating parts – Part 4: Gas turbine sets with fluid-film bearings.
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At the time of publication, the editions indicated were valid. This includes gas turbines directly coupled to other prime movers such as steam turbines, but the evaluation of the steam turbine vibration is not dealt with in this part of ISO see the following exclusion list. Vibration values within this zone are normally considered to be of sufficient severity to cause damage to the machine. However, for long-term condition monitoring purposes and for diagnostics, the use of vibration vector information is particularly useful for detecting and defining changes in the dynamic state of the machine.
Although the transducers may be placed at any angular location on the bearing housings or pedestals, vertical and horizontal directions are usually preferred. Your Alert Profile lists the documents that will be monitored. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
Withoutabox Submit to Film Festivals. Learn more about Amazon Giveaway. In some cases, these changes would go undetected when using only broad-band vibration measurements see, for example, ISO Alexa Actionable Analytics for the Web.
This could be achieved with the aid of a computer. The specification of criteria for this, however, is beyond the present scope of this part of ISO Since the data showed significant spread, the zone boundary values should be considered only as guidelines.
Large differences exist between these two turbine types in, for example, casing flexibility, bearing design, rotor to stator weight ratio and mounting structure.
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BS ISO 10816-4:2009+A1:2017
Measurements at these locations characterize reasonably well the state of vibration. Criterion II is specified on the basis of the change in broad-band vibration magnitude occurring under steady-state operating conditions.
If the TRIP value is exceeded, immediate action should be taken to reduce the vibration or the machine should be shut down. This title may contain less than 24 pages of technical content. Gas turbine driven sets excluding aircraft derivatives 1 Scope This isso of ISO gives specific guidance for assessing the severity of vibration measured on the bearing housings or 1816-4 of gas turbine driven sets.
10816–4 will, in most cases, be adequate for acceptance testing and for operational monitoring purposes. There may, however, be differences for machines of different design and isl is not possible to give clear guidelines for absolute TRIP values.
Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. 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.
Subscription pricing is determined by: It also includes any driven equipment not included in the exclusion sio below. The characteristics of the measuring system should be known with regard to the effects of the environment including: Different operational ALARM settings may then exist for different bearings on the machine, reflecting differences in dynamic loading and bearing support stiffnesses.
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Thus, when the criteria of this part of ISO and those of ISO are both applied in the assessment of machine vibration, independent shaft and bearing housing or pedestal vibration measurements should be made. This includes gas turbines directly coupled to other prime movers such as steam turbines, but the evaluation of the steam turbine vibration is not dealt with in this part of ISO see the following exclusion list.
Two criteria are provided for assessing the machine vibration when operating under steady state conditions. I’d like to read this book on Kindle Don’t have a Kindle?
For such cases and when peak rather than r. Particular attention should be given to ensuring that the vibration-sensing transducers are correctly mounted and do not degrade the accuracy of the measurement.
The work of preparing International Standards is normally carried out through ISO technical committees. You can download and open this file iiso your own computer but DRM prevents opening this file on another computer, including a networked server.
It should be noted, however, that the vibration of a gas turbine can be influenced by its mounting system and coupling arrangement to driven machines.