ISO INTERNATIONAL STANDARD 13373-3 First edition 2015-09-15 Condition monitoring and diagnosticsofmachines-Vibration condition monitoring Part 3: Guidelines forvibration diagnosis Surveillance etdiagnostic d'etat des machines-Surveillance des vibrations- Partie 3: Lignes directrices pour lediagnostic des vibrations Referencenumber IS0 13373-3:2015(E) @IS02015 IS013373-3:2015(E) Contents Page Foreword iv Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 Measurements. 4.1 Vibrationmeasurements 4.2 Machine operational parametermeasurements 5 Structured diagnostic approach 6 Additional analysis and testing 3 6.1 General 6.2 Notrequiring changes to operating parameters 6.2.1 General. 6.2.2 Trend analysis 3 6.2.3 Phaseanalysis 6.2.4 Resonancetest 6.2.5 Measurementofoperational deflection shape 6.2.6 Long-time waveform capture 6.3 Requiring changes to operating parameters 6.3.1 Changestooperatingconditions 6.3.2 Complete experimental modal analysis 6.4 Changes to the physical state of the machine 7 Additionaldiagnostictechniques 8 Considerations when recommending actions 5 AnnexA(normative)Processtablesforthesystematicapproachtovibrationanalysis ofmachines 6 AnnexB(informative) Installationfaultscommontoall machines .12 Annex C (informative) Diagnosis of radial hydrodynamic fluid-film bearings .19 Annex D (informative) Diagnosis of rolling element bearings .29 Bibliography .36 @IS0 2015-All rights reserved ii IS013373-3:2015(E) Foreword Iso (the International Organizationfor Standardization) is a worldwide federation ofnational standards bodies (iso member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right tobe represented on that committee.International organizations,governmentaland non-governmental, in liaison with Iso, alsotake part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnicalstandardization. The procedures used to developthis document and those intended for its further maintenance are described in theIsO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of IsO documents should be noted.This document was drafted in accordance with the editorialrulesoftheISo/IECDirectives,Part2 (seewww.iso.org/directives). Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectof patent rights. Iso shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on theIsolist of patent declarations received (seewww.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constituteanendorsement. For an explanation onthemeaningof Iso specific termsand expressions relatedto conformity assessment,aswell as informationaboutIsO'sadherencetotheWTOprinciples intheTechnical Barriers to Trade (TBT) see the following URL:Foreword-Supplementary information The committee responsible for this document is Iso/TC 108, Mechanical vibration, shock and condition to machines, vehicles and structures. Iso 13373 consists of thefollowing parts, under the general title Condition monitoring and diagnosticsof machines-Vibration conditionmonitoring: Part1:Generalprocedures Part2:Processing,analysisandpresentationofvibrationdata Part3:Guidelinesforvibrationdiagnosis Part9:Diagnostictechniquesforelectricmotors iv @IS02015-All rights reserved