ISO-13372-2004.pdf

Reference number ISO 13372:2004(E) © ISO 2004 INTERNATIONAL STANDARD ISO 13372 First edition 2004-05-15 Condition monitoring and diagnostics of machines Vocabulary Surveillance et diagnostic des machines Vocabulaire Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 03:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 13372:2004(E) © ISO 2004 The reproduction of the terms and definitions contained in this International Standard is permitted in teaching manuals, instruction booklets, technical publications and journals for strictly educational or implementation purposes. The conditions for such reproduction are: that no modifications are made to the terms and definitions; that such reproduction is not permitted for dictionaries or similar publications offered for sale; and that this International Standard is referenced as the source document. With the sole exceptions noted above, no other 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 either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii © ISO 2004 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 03:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 13372:2004(E) © ISO 2004 All rights reserved iii Contents Page Forewordiv Introduction v Scope.1 1 General terms1 2 Machine characteristics.2 3 Operation and maintenance 3 4 Faults3 5 Data collection (acquisition)4 6 Data characteristics5 7 Data (signal) processing5 8 Analysis .6 9 Diagnostics7 10 Prognostics .8 Bibliography .9 Alphabetical index .10 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 03:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 13372:2004(E) iv © ISO 2004 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national 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 to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 13372 was prepared by Technical Committee ISO/TC 108, Mechanical vibration and shock, Subcommittee SC 5, Condition monitoring and diagnostics of machines. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 03:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 13372:2004(E) © ISO 2004 All rights reserved v Introduction This International Standard defines terms relating only to condition monitoring and diagnostics of machines. It does not include terms that are defined elsewhere, nor those specific to only one area of the field. It is considered a living document and will be amended or updated as additional terms arise. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 03:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 03:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 13372:2004(E) © ISO 2004 All rights reserved 1 Condition monitoring and diagnostics of machines Vocabulary Scope This International Standard specifies definitions of terms used in condition monitoring and diagnostics of machines. It is intended to provide users and manufacturers of condition monitoring and diagnostics systems with a common vocabulary. 1 General terms 1.1 analysis careful scrutiny of constituent parts of a system (1.17) in order to thoroughly understand the whole 1.2 breakdown maintenance maintenance performed after a machine (1.10) has failed 1.3 catastrophic failure sudden, unexpected failure (1.7) of a machine (1.10) resulting in considerable damage to the machine and/or associated machines or components 1.4 condition-based maintenance maintenance performed as governed by condition monitoring programmes 1.5 condition monitoring detection and collection of information and data that indicate the state of a machine (1.10) NOTE The machine state deteriorates if faults (1.8) or failures (1.7) occur. 1.6 diagnostics examination of symptoms (9.5) and syndromes (4.9) to determine the nature of faults (1.8) or failures (1.7) (kind, situation, extent) 1.7 failure termination of the ability of an item to perform a required function (1.9) NOTE Failure is an event as distinguished from fault (1.8), which is a state. 1.8 fault condition of a component that occurs when one of its components or assemblies degrades or exhibits abnormal behaviour, which may lead to the failure (1.7) of the machine (1.10) NOTE 1 A fault may be the result of a failure, but can exist without a failure. NOTE 2 Planned actions or lack of external resources are not a fault. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 03:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 13372:2004(E) 2 © ISO 2004 All rights reserved 1.9 function appropriate action of any machine (1.10) or part of a system (1.17) NOTE The function is the action and activity assigned to, required of, or expected of a machine or system. 1.10 machine mechanical system designed expressly to perform a specific task, such as the forming of material or the transference and transformation of motion, force or energy NOTE This is also sometimes referred to as equipment. 1.11 machine characteristics distinguishing attributes, qualities and properties of a machine (1.10) and its subsystems which, by their presence and the relative magnitudes of their effects, define the configuration, performance, behaviour and capabilities of the machine 1.12 machine system machine train (deprecated) mechanical system in which the principal subsystem is a specific machine (1.10) and whose other subsystems are components and auxiliaries whose individual functions are integrated to support the actions and work of the machine 1.13 predictive maintenance maintenance emphasizing prediction of failure (1.7) and taking action based on the condition of the equipment to prevent failure or degradation 1.14 preventive maintenance maintenance performed according to a fixed schedule, or according to a prescribed criterion that detects or prevents degradation of a functional structure, system (1.17) or component, in order to sustain or extend its useful life 1.15 proactive maintenance type of maintenance emphasizing the routine detection and correction of root cause (8.11) conditions that would otherwise lead to failure (1.7) EXAMPLES High lubricant contamination, misalignment and unbalance. 1.16 prognostics analysis of the symptoms of faults (1.8) to predict future condition and remaining useful life 1.17 system grouping of associated entities, which is characterized by a mental construct NOTE One of the associated entities is the boundary of the system. 2 Machine characteristics 2.1 critical machinery machinery which is required to accomplish a major part of an economic process Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 03:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 13372:2004(E) © ISO 2004 All rights reserved 3 2.2 maintainability ability of a machine or part of a system to be retained in, or restored to, a state in which it can perform the required function(s) (1.9) 2.3 performance behaviour, characteristics and efficiency of a technological process, running in a machine (1.10) 2.4 reliability probability that a machine (1.10) will perform its required functions (1.9) without failure (1.7) for a specified time period when used under specified conditions 3 Operation and maintenance 3.1 alignment condition whereby the axes of machine system (1.12) components are either coincident, parallel or perpendicular, according to design criteria 3.2 reliability centred maintenance RCM disciplined logic used to identify those cost effective and technologically feasible maintenance tasks that realise the inherent reliability (2.4) of equipment at a minimum expenditure of resources over the life of the equipment 3.3 thermal growth change in the dimensions of a system (1.17) component caused by expansion due to changes in temperature 4 Faults 4.1 abnormality deviation from a standard condition 4.2 alarm operational signal or message designed to notify personnel when a selected anomaly, or a logical combination of anomalies, requiring corrective actions is encountered NOTE An alarm is a more severe anomaly zone than an alert (4.3) and should be identified with a red indicator. 4.3 alert operational signal or warning message designed to notify personnel when a selected anomaly, or a logical combination of anomalies, requiring heightened awareness is encountered NOTE An alert is the first zone of an anomaly (4.4) and should be identified with a yellow indicator. 4.4 anomaly irregularity or abnormality (4.1) in a system (1.17) 4.5 distortion departure from normal shape or configuration Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 03:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 13372:2004(E) 4 © ISO 2004 All rights reserved 4.6 failure mode effect by which a failure (1.7) is observed ISO/IEC 2382-14 4.7 fault progression characterization of the change in severity of a fault (1.8) over time 4.8 sign characteristic parameter of a signal, which shows information about a state cf. symptom (9.5) 4.9 syndrome group of signs (4.8) or symptoms (9.5) that collectively indicate or characterize an abnormal condition 4.10 tribological wear wear that occurs as a result of relative motion at the surface 5 Data collection (acquisition) 5.1 attenuation decrease in strength of a signal, usually as a result of the distance a signal travels or the density of the medium through which it travels 5.2 background noise unwanted noise present in a signal which cannot be attributed to a specific cause 5.3 dynamic range ratio of the largest magnitude to the smallest magnitude that a transducer or analyser can detect NOTE Dynamic range is generally expressed in decibels as 20 times the logarithm to the base 10 of the ratio of the largest magnitude to the smallest magnitude. 5.4 thermography use of infrared imagers, whereby the temperatures of a wide variety of targets can be measured remotely and without contact by measuring the infrared energy radiating from the surface of the target and converting this measurement to an equivalent surface temperature 5.5 time window time required for a digital analyser to take the number of samples required to accurately reconstruct the input signal 5.6 triboelectric noise noise generated into a shielded cable, caused by bending or motion of the cable Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 03:41:44 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 13372:2004(E) © ISO 2004 All rights reserved 5 6 Data characteristics 6.1 asynchronous non-synchronous (deprecated) vibration components that are not related to rotating speed 6.2 descriptor feature data item derived from raw or processed parameters or external observation 6.3 noise floor level of noise present in a system (1.17) with no exciting signal present 6.4 off line in condition moni