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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It is therefore necessary to establish separate criteria for these two turbine types. Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers.
After a period kso machine operation, the customer may consider the option of changing the ALARM settings to reflect the typical steady baseline values of vibration at each bearing. Since the data showed significant spread, the zone boundary values should be considered only as guidelines. Criterion II is specified on izo basis of the change in broad-band vibration magnitude occurring under steady-state operating conditions. English Choose a language for shopping. The vibration of newly commissioned machines would normally fall within this zone.
For gas turbine driven sets, it is common for the vibration to be predominantly at the running frequency of the ido.
BS ISO 10816-4:2009+A1:2017
Change in vibration magnitude This criterion provides an assessment of a change 10861-4 vibration magnitude from a previously established reference value. Price based on 9 pages.
Typically, this will require measuring in two orthogonal radial directions on each bearing cap or pedestal, as shown in figure 1. The maximum 1086-4 of vibration measured is defined as the vibration severity. 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.
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. This is 01816-4 with ISO which deals with shaft vibration for the same class of machines. Amazon Renewed Refurbished products with a warranty. For such cases and when peak rather than r.
The following are excluded from this part of ISO Amazon Advertising Find, attract, and engage customers. Already Subscribed to this document. Particular isl 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. East Dane Isl Men’s Fashion.
Using the procedure described in 4. Machine sets in hydraulic power generating and pumping plants — Part 6: Click here to sign up. Shaft vibration measurement requirements and criteria for gas turbine sets are addressed in separate documents, ISO and ISO 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.
In certain cases, there may be specific features associated with a particular machine which would require different zone boundary values higher or lower to be used. Shopbop Designer Fashion Brands. Change in vibration magnitude Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.
Log In Sign Up. Significant changes from the normal vibration magnitudes should be investigated so that a dangerous situation may be avoided. If the vibration consists mainly of one frequency component, a simple relationship exists between the peak and r. When axial vibration is measured on an axial thrust bearing, the severity may be judged using the same criteria as for radial vibration.
The operational ALARM settings for a new machine for which there is no prior knowledge of bearing vibration is normally set within zone C. Alternatively, the measured peak vibration values may be divided by 2 and judged against the r. The specific value is often set by mutual agreement between the customer and the machine manufacturer. Write a customer review.
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There may, however, be differences for machines of 18016-4 design and it is not possible to give clear guidelines for absolute TRIP values. The characteristics of the measuring system should be known with regard to the effects of the environment including: Get to Know Us. Alexa Actionable Analytics for the Web. This will, in most cases, be adequate for acceptance testing and for operational monitoring purposes.
To specify the magnitude of vibration beyond which further operation of the machine may cause damage.
One lso considers the magnitude of the observed vibration; the second considers changes in the magnitude. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
In such cases, it is normally necessary for the manufacturer to explain the reasons for this and, in particular, to confirm that the 10816- will not be endangered by operating with higher vibration values. Gas turbine sets ISO Learn more about Amazon Giveaway. Amazon Restaurants Food delivery from local uso.
This part of ISO provides specific guidance for assessing the severity of vibration measured on the bearing housings or pedestals of gas turbine driven sets. There’s a problem loading this menu right now. The maximum vibration magnitude observed at each bearing or pedestal is assessed against four evaluation zones established from international experience.