IEC 61014 pdf download – Programmes for reliability growth

IEC 61014 pdf download – Programmes for reliability growth
This International Standard specifies requirements and gives guidelines for the exposure andremoval of weaknesses in hardware and software items for the purpose of reliability growth.
lt applies when the product specification calls for a reliability growth programme of equipment(electronic，electromechanical and mechanical hardware as well as software) or when it isknown that the design is unlikely to meet the requirements without improvement.
A statement of the basic concepts is followed by descriptions of the management, planning,testing (laboratory or field), failure analysis and corrective techniques required.Mathematicalmodelling, to estimate the level of reliability achieved, is outlined briefly.
2Normative references
The following referenced documents are indispensable for the application of this document.For dated references, only the edition cited applies.For undated references, the latest editionof the referenced document (including any amendments) applies.
IEC 60300-1, Dependability management – Part 1: Dependability management systems1
IEC 60300-2，Dependability management – Part 2: Guidance for dependability programmemanagement2
IEC 60300-3-1，Dependability management – Part 3-1:Application guide – Analysis tech-niques for dependability – Guide on methodology
IEC 60300-3-5:2001，Dependability management – Part 3-5:Application guide – Reliabilitytest conditions and statistical test principles
IEC 60605-2,Equipment reliability testing – Part 2: Design of test cycles
IEC 60605-3 (all parts)，Equipment reliability testing – Part 3: Preferred test conditions
lEC 60605-4，Equipment reliability testing – Part 4: Statistical procedures for exponentialdistribution – Point estimates,confidence intervals, prediction intervals and tolerance intervals
IEC 60812,Analysis techniques for system reliability – Procedure for failure mode and effectsanalysis (FMEA)
IEC 61025,Fault tree analysis (FTA)
IEC 61160,Formal design review
IEC 61164,Reliability growth – Statistical test and estimation methods
3Terms and definitions
For the purposes of this document, the following terms and definitions apply.
NOTE1 Certain terms come from lEC 60050(191) and, where this is the case, the concept from that publication isreferenced in square brackets after the definition. isO 9000:2000 is used as referenced to quality vocabulary.
NOTE 2 For analysis of the rellablity growth test data, it is important to distingulish between the terms “failureintensity”(for repaired item5) and “failure rate”or”instantaneous failure rate””(for non-repaired or one-shot items)defined in IEC 60o50(191,
3.1
itementity
any part,component,device，subsystem，functional unit,equipment or system that can beindividually considered
NOTE An item may consist of hardware,software or both,and may also, in particular cases, include people.[IEC 60050,191-01-01]
3.2
reliability improvement
process undertaken with the deliberate intention of improving the reliability performanceby eliminating causes of systematic failures and/or by reducing the probability of occurrenceof other failures
[IEC 60050，191-17-05]
NOTE 1 The method described in this standard is aimed at making corrective modifications ainmed at reducingsystematic weaknesses or reducing their likelihood of occurrence.
NOTE 2For any item, there are limits to practicable and economic improvement and to achievable growth.3.3
reliability growth
condition characterized by a progressive improvement of a reliability performance measureof an item with time
[IEC 60050,191-17-04]
NOTE Modelling (projection) and analysis of reliability improvement during the design phase is based on thestandard estimation of the expected product reliability within a given time period.
3.4
integrated reliability engineering
engineering tool, consisting of a multitude of reliabilityldependability methods integrated intoall engineering stages and activities regarding a product, from the conceptual phase throughits use in the field by a combination of contributions from all relevant stakeholders
3.5
product reliability goal
reliability goal for a product based on certain corporate targets，market requirements ordesired mission success probability that is reasonably achievable according to the pasthistory and technical evolution
NOTE For some projects, the reliability goal is set by the customer. The product specific goal is the target valueof the reliability growin process.
3.6
systematic weakness
weakness，which can be eliminated,or its effects reduced,only by a modification of thedesign or manufacturing process,operational procedures,documentation or other relevantfactors,or by replacement of substandard components by components of proven superiorreliability
NOTE 1 A systematic weakness often results in a failure that is related to a weakness in the design ora weakness of the manufacturing process or documentation.