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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Measurements at these locations characterize reasonably well the state of vibration. Amazon Music Stream millions of songs. Unless 10816–4 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.
All standards are subject to revision, and parties to agreements based on this part of ISO are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
The zone boundary vibration values were established from representative data provided by manufacturers and users. The operational ALARM settings for a new machine for which there is no prior knowledge of bearing vibration is normally set within zone C.
BS ISO 10816-4:2009+A1:2017
General guidelines 3 Measurement procedures The measurement procedures 1816-4 instrumentation shall comply with the general requirements of ISO and are as follows. If the TRIP 10861-4 is exceeded, immediate action should be taken to reduce the vibration or the machine should be shut down.
Figure 1 — Measurement points on main bearings 4 Evaluation ISO provides a general description of the two evaluation criteria used to assess vibration severity on various classes of machines.
Change in vibration magnitude This criterion provides an assessment of a change in vibration magnitude from a previously established reference value. Get to Know Us. Subscription pricing is determined by: Such changes can be instantaneous or progressive with time and may indicate incipient damage or some other irregularity.
For gas turbine driven sets, it is common for 108116-4 vibration to be predominantly at the running frequency of the machine.
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This could be achieved with the aid of a computer. Amazon Inspire Digital Educational Resources. I’d like to read this book on Kindle Don’t have a Kindle?
Amazon Drive Cloud storage from Amazon. Gas turbine driven isk excluding aircraft derivatives — Part 5: The specific value is often set by mutual agreement between the customer and the machine manufacturer. It is important to recognize that there is no simple way to relate bearing housing vibration to shaft vibration, or vice versa. Read more Read less.
Please first verify your email before subscribing to alerts. Pages with related products. In addition, different criteria are provided for transient operating conditions, such as run-up and coast-down. The vibration criteria provided in this part of ISO apply to heavy-duty gas turbine sets. Shopbop Designer Fashion Brands. Diagnostic investigations should then be initiated to ascertain the iao for the change and to determine what further actions are appropriate.
When Criterion II is applied, the vibration measurements being compared shall be taken at the same 108164 location and orientation, and under approximately the same steady-state operating conditions of speed, load, and thermal condition.
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It is therefore necessary to establish separate criteria for these two turbine types. Different operational ALARM settings may then exist for different bearings on the machine, reflecting differences in dynamic loading and bearing support stiffnesses. International organizations, governmental and non- governmental, in liaison with ISO, also take part 100816-4 the work.
Thus, when the jso 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. There may, however, be differences for machines of different design and it is not possible to give clear guidelines for absolute TRIP values.
Click here to sign up. Change in vibration magnitude Using the procedure described in 4. However, these values provide guidelines for ensuring that gross deficiencies or unrealistic requirements are avoided. 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.
Log In Sign Up. 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. However, ISO as well as this part of ISO may be revised in the future to give different criteria for gas turbine driven sets mounted on massive concrete foundations and those mounted on lighter, tuned steel foundations, if additional analysis of survey data on such machines shows it to be warranted.
It also includes any driven equipment not included in the exclusion 108164- below. Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. Vibration magnitude This criterion is concerned with defining limits for absolute vibration magnitude consistent with acceptable dynamic loads on the bearings and acceptable vibration transmission into the lso through the support structure and foundation.
Price based on 9 pages. Criterion II is specified on the basis of the change in broad-band vibration magnitude occurring under steady-state operating conditions. The vibration criteria provided in this part of Iiso apply to heavy-duty gas turbine sets. 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.
Remember me on this computer. This standard provides specific guidance for assessing the severity of radial vibration measured on the bearing housings of gas turbines with fluid-film bearings in situ. They assume that the measurements are in-situ broad-band values taken under normal steady-state operating conditions.