1、EIASTANDARDInternational Electrotechnical Vocabulary Part 192: DependabilityEIA-60050-192 (IEC 60050-192:2015, IDT) September 2017 Electronic Components Industry Association ANSI/EIA-60050-192-2017 Approved: September 21, 2017 EIA-60050-192NOTICEEIA Engineering Standards and Publications are designe
2、d to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of s
3、uch Standards and Publications shall not in any respect preclude any member or nonmember of ECIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than ECIA
4、members, whether the standard is to be used either domestically or internationally. Standards and Publications are adopted by ECIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, ECIA does not assume any liability to any patent owner, nor does it as
5、sume any obligation whatever to parties adopting the Standard or Publication. This EIA Standard is identical (IDT) with the International Standard IEC Publication 60050-192:2015 Edition 1: International Electrotechnical Vocabulary Part 192: Dependability. This document is the EIA Standard EIA-60050-
6、192-2017: International Electrotechnical Vocabulary Part 192: Dependability.The text, figures and tables of IEC 60050-192:2015 are used in this Standard with the consent of the IEC and the American National Standards Institute (ANSI). The IEC copyrighted material has been reproduced with permission
7、from ANSI. The IEC Foreword and Introduction are not part of the requirements of this standard but are included for information purposes only. This Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of
8、the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal No. 5391.01, formulated under the cognizance of the ECIA Dependability Standards Committee).Published by Electronic Com
9、ponents Industry Association 2017 Engineering Department 2214 Rock Hill Road, Suite 265 Herndon, VA 20170 PLEASE ! DONT VIOLATE THE LAW!This document is copyrighted by the ECIA and may not be reproduced without permission. Organizations may obtain permission to reproduce a limited number of copies t
10、hrough entering into a license agreement. For information, contact: IHS Markit 15 Inverness Way East Englewood, CO 80112-5704 or call USA and Canada (1-877-413-5186), International (303-397-7956) i ContentsFOREWORD . iiINTRODUCTION Principles and rules followed iv1 Scope 12 Terms and definitions 1An
11、nex A (informative) Disposition of IEC 60050-191:1990, Edition 1 terms 47INDEX 60ii INTERNATIONAL ELECTROTECHNICAL COMMISSION _ INTERNATIONAL ELECTROTECHNICAL VOCABULARY Part 192: Dependability FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardiz
12、ation comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes Internat
13、ional Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in
14、 this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
15、two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have
16、the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misint
17、erpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding nationa
18、l or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services car
19、ried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Co
20、mmittees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn
21、 to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not b
22、e held responsible for identifying any or all such patent rights. International Standard IEC 60050-192 has been prepared by IEC technical committee 56: Dependability, under the responsibility of IEC technical committee 1: Terminology. This first edition cancels and replaces the first edition of IEC
23、60050-191:1990, sections 191-01 to 191-20, IEC 60050-191:1990/AMD1:1999, entries in sections 191-01 to 191-20 and IEC 60050-191:1990/AMD2:2002. It constitutes a technical revision. It has the status of a horizontal standard in accordance with IEC Guide 108. This part of IEC 60050 includes the follow
24、ing significant technical changes with respect to the IEC 60050-191: a) inclusion of terms more commonly used by practitioners; b) provision of figures to help explain definitions of time-related concepts. iii The text of this standard is based on the following documents: FDIS Report on voting 1/225
25、4/FDIS 1/2256/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. In this part of the IEV, the terms and definitions are provided i
26、n French and English; in addition the terms are given in Arabic (ar), Czech (cs), German (de), Spanish (es), Japanese (ja), Polish (pl), Portuguese (pt) and Chinese (zh). A list of all parts of the IEC 60050 series, published under the general title International Electrotechnical Vocabulary, can be
27、found on the IEC website and is available at www.electropedia.org. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under webstore.iec.ch in the data related to the specific publication. At this date, the pub
28、lication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. iv INTRODUCTION Principles and rules followed GeneralThe IEV (IEC 60050 series) is a general purpose multilingual vocabulary covering the field of electrotechnology, electronics and telecommunication (available at ww
29、w.electropedia.org). It comprises about 20 000 terminological entries, each corresponding to a concept. These entries are distributed among about 80 parts, each part corresponding to a given field. EXAMPLE Part 161 (IEC 60050-161): Electromagnetic compatibility Part 411 (IEC 60050-411): Rotating mac
30、hines The entries follow a hierarchical classification scheme Part/Section/Concept; within the sections, the concepts are organized in a systematic order. The terms and definitions (and possibly non-verbal representations, examples, notes to entry and sources) in the entries are given in two or more
31、 of the three IEC languages, that is French, English and Russian (principal IEV languages). In each entry, the terms alone are also given in several of the additional IEV languages(Arabic, Chinese, Finnish, German, Italian, Japanese, Norwegian, Polish, Portuguese, Serbian, Slovenian, Spanish and Swe
32、dish). Organization of a terminological entryEach of the entries corresponds to a concept, and comprises: - an entry number, - possibly a letter symbol for the quantity or unit, then, for the principal IEV languages present in the part: - the term designating the concept, called “preferred term”, po
33、ssibly accompanied by synonyms and abbreviations, - the definition of the concept, - possibly non-verbal representations, examples and notes to entry, - possibly the source, Entry number The entry number is comprised of three elements, separated by hyphens: Part number: 3 digits, Section number: 2 d
34、igits, Concept number: 2 digits (01 to 99). EXAMPLE 131-13-22 v Letter symbols for quantities and units These symbols, which are language independent, are given on a separate line following the entry number. EXAMPLE 131-12-04 RresistancePreferred term and synonyms The preferred term is the term that
35、 heads a terminological entry in a given language; it may be followed by synonyms. It is printed in boldface. Synonyms: The synonyms are printed on separate lines under the preferred term: preferred synonyms are printed in boldface, and deprecated synonyms are printed in lightface. Deprecated synony
36、ms are prefixed by the text “DEPRECATED:”. Absence of an appropriate term: When no appropriate term exists in a given language, the preferred term is replaced by five dots, as follows: “ . ” (and there are of course no synonyms). Attributes Each term (or synonym) may be followed by attributes giving
37、 additional information, and printed in lightface on the same line as the corresponding term, following this term. EXAMPLE specific use of the term: transmission line, national variant: lift, GB grammatical information: quantize, verb transient, noun AC, adj vi Source In some cases, it has been nece
38、ssary to include in an IEV part a concept taken from another IEV part, or from another authoritative terminology document (ISO/IEC Guide 99, ISO/IEC 2382, etc.), either with or without modification to the definition (and possibly to the term). This is indicated by the mention of this source, printed
39、 in lightface, and placed at the end of the entry in each of the principal IEV languages present. EXAMPLE SOURCE: IEC 60050-131:2002, 131-03-13, modified EIA-60050-192 Page 1 INTERNATIONAL ELECTROTECHNICAL VOCABULARY Part 192: Dependability 1 Scope This part of IEC 60050 gives the general terminolog
40、y used in the field of dependability. The terms are generic and are applicable to all fields of dependability methodology, including electrotechnical applications. The document is not an exhaustive vocabulary for all IEC standards in the dependability field: definitions for some specialized terms ma
41、y only be found in the relevant standards. This document is based on IEC 60050-191:1990, which has been subjected to a systematic, in-depth review and revision, in order to: reflect the current usage of the terms in the dependability field; introduce new terms from new or revised standards, and othe
42、r informed sources; and provide a grammatical form, and presentation to comply with the IEC directives. In producing this document, several sections of IEC 60050-191:1990 (formerly Chapter 191) concerning quality of service, have been omitted: sections 19 and 20: Quality of service in telecommunicat
43、ions, has been adopted and developed by the International Telecommunication Union, as publication ITU-T E.800,Definitions of terms related to quality of service; and sections 21 to 30, inclusive: Quality of service in electric power systems is to be developed as a new document, IEC 60050-6921. It ha
44、s the status of a horizontal standard in accordance with IEC Guide 108, Guidelines for ensuring the coherency of IEC publications Application of horizontal standards. This terminology is consistent with the terminology developed in the other specialized parts of the IEV. This horizontal standard is
45、primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 108. One of the responsibilities of a technical committee is, wherever applicable, to make use of horizontal standards in the preparation of its publications. T
46、he content of this horizontal standard will not apply unless specifically referred to or included in the relevant publications. 2 Terms and definitions The terms and definitions contained in this part of IEC 60050 were extracted from the Electropedia www.electropedia.org) (also known as the “IEV Onl
47、ine“) the worlds most comprehensive online terminology database covering the field of electrotechnology, electronics and telecommunication. 1 Under consideration. EIA-60050-192 Page 2 SECTION 192-01 BASIC CONCEPTS 192-01-01itemsubject being considered Note 1 to entry: The item may be an individual p
48、art, component, device, functional unit, equipment, subsystem, or system. Note 2 to entry: The item may consist of hardware, software, people or any combination thereof. Note 3 to entry: The item is often comprised of elements that may each be individually considered. See sub item (192-01-02) and in
49、denture level (192-01-05). Note 4 to entry: IEC 60050-191:1990 (now withdrawn; replaced by IEC 60050-192:2015) identified the term “entity” as an English synonym, which is not true for all applications. Note 5 to entry: The definition for item in IEC 60050-191:1990 (now withdrawn; replaced by IEC 60050-192:2015) is a description rather than a definition. This new definition provides meaningful substitution throughout this document. The words of the former definition form new note 1. 192-01-02sub itempart of the subject being considered Note
