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GB/T 36245-2018 English PDF

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GB/T 36245-2018: Guide for reliability allocation of industrial process measurement and control instrument
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Basic data

Standard ID GB/T 36245-2018 (GB/T36245-2018)
Description (Translated English) Guide for reliability allocation of industrial process measurement and control instrument
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard N10
Classification of International Standard 25.040.40
Word Count Estimation 18,195
Date of Issue 2018-06-07
Date of Implementation 2019-01-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 36245-2018: Guide for reliability allocation of industrial process measurement and control instrument


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Guide for reliability allocation of industrial process measurement and control instrument ICS 25.040.40 N10 National Standards of People's Republic of China Industrial Process Measurement and Control Instrumentation Reliability Distribution Guide Published on.2018-06-07 2019-01-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword I Introduction II 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 symbols and code 2 5 Reliability Distribution Principle 2 6 Reliability Distribution Procedure 2 7 Selection of allocation method 2 7.1 Select by stage 2 7.2 Select by condition 3 8 Reliability Allocation Method 3 8.1 and other distribution methods 3 8.2 Score allocation method 4 8.3 Proportional combination method 5 8.4 Importance Method 5 8.5 Reliability Redistribution Method 5 8.6 redundancy system proportional combination method 6 9 Reliability Distribution Results Analysis 6 Appendix A (informative) Software reliability allocation method 7 Appendix B (informative) The common reliability characteristics of the instrument 9 Appendix C (informative appendix) Reliability Distribution Method Application Case 10 Reference 14

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Industrial Process Measurement Control and Automation Standardization Technical Committee (SAC/TC124). This standard was drafted. Chongqing Industrial Automation Instrumentation Research Institute, Yangzhou Electric Power Equipment Repairing Factory Co., Ltd., Chongqing Sichuan Instrument Automation Co., Ltd. Co., Ltd., Nanjing Keyuan Automation Group Co., Ltd., Zhejiang Lente Electromechanical Co., Ltd., Shanghai Chenzhu Instrument Co., Ltd., Shanghai Fanyi Technology Electronics Co., Ltd., Shenzhen Biaoli Technology Development Co., Ltd., Chongqing Dazheng Temperature Instrument Co., Ltd., Chongqing Science and Technology Institute of Technology, China Electric Power Engineering Consulting Group Southwest Electric Power Design Institute, Southwest University, Chongqing Automation and Instrumentation Society. The main drafters of this standard. Liu Xingli, Liu Qin, Chen Jiusong, Long Ping, Huang Yunqi, Shen Deming, Wu Fangliang, Yuan Zhen, Wang Shengbin, Chen Yu, Zhou Hongqin, Sun Huaiyi, Zhang Jinbin, Zhou Xuelian, Fang Chao, Liu Xiaoli, Zhao Juan.

Introduction

With the advancement of science and technology and the increasing complexity of the use of industrial process measurement and control instruments, the reliability indicators of instruments have become One of the most important technical indicators for measuring instrument quality. Reliability distribution is one of the most important means in reliability design technology. Over the years, the development has become more and more mature. There are more than 10 methods that have been widely used at present, because each method has certain conditions and requirements. With limited scope, not every method is applicable to industrial process measurement and control instruments; With standards and specifications, this standard will be used to guide and standardize the distribution of reliability for industrial process measurement and control instrumentation engineers. jobs. The basic components of industrial process measurement and control instruments can be generally divided into hardware and software. The reliability mathematical model is a series junction. Structure, some key parts will adopt a parallel structure to ensure the completion of the instrument task. Carry out industrial processes by summarizing national science and technology projects Measurement and control instrument reliability research results and experience, combined with industrial process measurement and control instrumentation enterprise reliability distribution work practices, According to its composition characteristics, six reliability distribution methods suitable for industrial process measurement and control instruments are recommended in this standard. Use principles, assignment models, and assignment steps to guide engineers through the application. When the instrument reliability index is assigned, the instrument will be soft. The article is considered as a whole, and the distribution methods proposed in Chapter 8 of this standard are applicable. If you need to redistribute the software part of the meter, you can Examine Appendix A for implementation. Industrial Process Measurement and Control Instrumentation Reliability Distribution Guide

1 Scope

This standard specifies the principles, procedures, methods and results analysis of the reliability distribution of industrial process measurement and control instruments (hereinafter referred to as meters). This standard applies to the reliability distribution of instruments.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 2900.13 Electrotechnical terminology credibility and service quality GB/T 29821-2013 Guidelines for the preparation of instrument reliability technical reports for industrial process measurement and control systems

3 Terms and definitions

The following terms and definitions as defined in GB/T 2900.13 apply to this document. For ease of use, the following is repeated Some terms and definitions in GB/T 2900.13. 3.1 Reliability The ability of a product to perform a specified function under specified conditions and within a specified time interval. Note. Rewrite GB/T 2900.13-2008, define 191-02-06. 3.2 Quantitative reliability requirement quantitativereliabilityrequirement Reliability indicators specified in the contract or development task book. 3.3 Reliability distribution reliabilityalocation The process of assigning the reliability requirements of a product to each component in accordance with a given criterion. 3.4 Reliability The probability that a product will perform a specified function under specified conditions and within a specified time interval. Note. Rewrite GB/T 2900.13-2008, define 191-12-01. 3.5 Maintainability (performance) Under the given conditions, when the repairs are carried out using the procedures and resources described, the product is maintained or restored under the given conditions of use. The ability to state the status of the feature. [GB/T 2900.13-2008, definition 191-02-07] 3.6 Reliability model reliabilitymodel A model established to assign, predict, analyze, or estimate the reliability of a product. Note. Rewrite GB/T 2900.13-2008, define 191-16-02.

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