GB/T 32857-2016 English PDF

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GB/T 32857-2016: Application guide for layer of protection analysis (LOPA)
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GB/T 32857-2016	979	Add to Cart	7 days	Application guide for layer of protection analysis (LOPA)	Valid

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Basic data

Standard ID: GB/T 32857-2016 (GB/T32857-2016)
Description (Translated English): Application guide for layer of protection analysis (LOPA)
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N10
Classification of International Standard: 25.040
Word Count Estimation: 49,446
Date of Issue: 2016-08-29
Date of Implementation: 2017-03-01
Regulation (derived from): National Standard Announcement 2016 No.14
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 32857-2016: Application guide for layer of protection analysis (LOPA)

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Application guide for layer of protection analysis (LOPA) ICS 25.040 N10 National Standards of People's Republic of China Protective Layer Analysis (LOPA) Application Guide 2016-08-29 released 2017-03-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface Ⅴ Introduction Ⅵ 1 Scope 1 2 normative reference document 1 3 terms and definitions, abbreviations 1 3.1 Terms and definitions 1 3.2 Abbreviations 3 4 Protective layer analysis (LOPA) principle 3 4.1 Purpose 3 4.2 Basic assumptions 3 5 protective layer analysis of basic procedures and application time 4 5.1 Basic procedures 4 5.2 Application time 4 Analysis Process 5 6.1 Scene Recognition and Screening 5 6.1.1 Basic requirements that should be met in the scenario 5 6.1.2 Scenario Information Source 5 6.1.3 Scene Screening and Development 5 6.2 Consequences and Severity Assessment 5 6.3 Initial Event Confirmation 6 6.3.1 Initial Event Type 6 6.3.2 Initial Event Determination Principle 7 6.4 Evaluation of independent protective coatings 7 6.4.1 Typical protective layer 7 6.4.2 Principle of determination of independent protective layer 7 6.4.3 Determination of independent protective layer 7 6.4.4 Determination of PFD for independent protective layer 6.5 Calculation of scene frequency 6.6 Assessment and recommendations of risk 9 7 LOPA Document 9 Appendix A (informative) LOPA analysis of each stage data (example) 11 A.1 Data derived from HAZOP for LOPA analysis A.2 LOPA Analysis Record Table 11 A.3 Consequences and Severity A.4 Typical protective layer 14 A.5 BPCS Multiple Circuit as Evaluation Method for IPL 17 A.6 Risk Assessment and Proposal Matrix Method Example 20 Appendix B (informative) Reactor systems LOPA applications 22 B.1 Introduction 22 B.2 Problem description 22 B.3 Discussion of issues 23 B.4 Design improvements to be considered 25 Appendix C (informative) Application of LOPA method in SIL rating C.1 LOPA Example 34 C.2 LOPA Example 2 36 Appendix D (informative) High Demand Mode Consequence Frequency Calculation Example 39 D.1 Overview 39 D.2 Calculation of the consequences of a single IPL D.3 Calculation of the consequences of multiple IPLs 39 Appendix E (informative) LOPA analysis table (example) 40 Reference 43 Figure 1 protective layer analysis flow chart 4 Figure A.1 Typical BPCS Logical Calculator 18 with Multiple Circuits in the Same Scenario Figure A.2 BPCS loop 18 for sharing sensors in the same scene Figure A.3 BPCS loop 19 with shared input/output cards in the same scenario Figure A.4 BPCS function loop in the same scenario as the maximum number of IPLs 19 Figure B.1 simplified process --- polyvinyl chloride (PVC) intermittent polymerization operation flow chart 22 Table 1 Abbreviations used in this standard 3 Table 2 Initial Event Type 6 Table A.1 Exporting Data Available from LZA from HAZOP 11 Table A.2 LOPA Analysis Record Table (Example) 11 Table A.3 Simplified material release consequences grading table (example) 13 Table A.4 Simplified injury to death consequences grading (example) 13 Table A.5 Simplified economic loss consequences grading (example) 14 Table A.6 Typical protective layer 14 Table A.7 Determination of Independent Protective Coatings 15 Table A.8 Typical independent protective layer PFD value 16 Table A.9 Risk Matrix with Different Action Requirements (Example) 20 Table A.10 Numerical analysis method - Allowable risk for safety and health related events (example) 20 Table A.11 Numerical analysis method - Allowable risk of environment-related events (example) 21 Table A.12 Numerical risk law - Allowable risk of property-related events (example) 21 Table B.1 Security Automation Scenario Case 23 Table B.2 Scenario 1 Analysis Case 26 Table B.3 Scenario 2 Analysis Case 27 Table B.4 Scenario 3 Analysis Case 28 Table B.5 Scenario 4 Analysis Case 29 Table B.6 Scenario 5 Analysis Case 30 Table B.7 Scenario 6 Analysis Case 31 Table B.8 Scenario 7 Analysis Case 32 Table B.9 Scenario 8 Analysis Case 33 Table C.1 LOPA Example-35 Table C.2 LOPA Example 2 36 Table E.1 Risk Matrix Method Risk Analysis (Example) 40 Table E.2 Risk analysis of numerical risk (example) 41

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard is 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). The drafting of this standard. mechanical industry instrumentation integrated technology and economic research institute, Beijing joint Pukken Engineering Technology Co., Ltd., China Safety Production Science Research Institute, Wind Control (Beijing) Engineering Technology Co., Ltd., China Petroleum and Natural Gas Pipeline Engineering Co., Ltd., China Petroleum Day Gas Co., Ltd. Pipeline Branch, Tianjin Zhongan Enterprise Management Consulting Co., Ltd., CNOOC Safety Technology Service Co., Ltd. Haipi Fruit Business Consulting Co., Ltd. The main drafters of this standard. Meng Zouqing, Xiao Songqing, Yu Wenguang, Zhao Jinsong, Tang Bin, Yuan Xiaojun, Fang Laihua, Shuai Bing, Nie Zhongwen, Liu Rui, Zuo Xin, Zhang Baoli, Zhao Jianmin, Liu Yao, Cheng Defa, You Zhenbin, Xu Chenchen, Shi Wei, Li Qiujuan, Gu Zheng, Zhou Youzheng, Sun Shu, Jin Jianghong

Introduction

The purpose of this standard is to describe the principle and analysis of protective layer analysis (LOPA), and to develop risk points for LOPA analysis Provide appropriate guidance and reference. The protective layer analysis method is a semi-quantitative risk assessment method by assessing the requirements of the protective layer The probability of risk failure to determine whether the existing protective layer can be a specific scenario to reduce the risk to the level of risk standards required, it's The advantage is. Compared with qualitative analysis, LOPA analysis can provide a basis for the relative quantification of risk decisions. Avoid subjective factors to risk control The impact of decision making. ● Although there is no quantitative risk analysis so accurate, but the process is simple. LOPA analysis can be applied before quantitative analysis work Method to screen the scene with relatively high risk, thus improving the efficiency of the whole risk analysis work, saving the analysis work cost. ● LOPA analysis is an important assessment tool for safety integrity level (SIL). Compared with the chart method, LOPA analysis can provide More accurate results. ● Through LOPA analysis, you can understand the contribution of different independent protective layer in reducing the risk process. On this basis, you can choose More economical and reasonable protection measures to reduce the risk. ● LOPA analysis usually uses the form of the form to record the assessment process, the recording process in line with the usual thinking habits, easy to read documents Easy to use. Through the protective layer analysis, you can find feasible solutions, such as the addition of other protective layer, change the process, etc., to choose the most cost-effective reduction Dangerous measures. LOPA analysis method, as a simplified semi-quantitative risk assessment method, makes the analysis and evaluation of the scene more than other quantitative The risk assessment method is more time and effort, and more importantly, it provides a method of identifying the risk of the scenario and compares it with an allowable risk ratio To determine whether existing safety measures are appropriate and whether new security measures are needed. LOPA analysis by analyzing the scene The whole process, can be a good identification of intermediate events, security measures and the consequences of the accident, to help analysts understand a comprehensive understanding of specific scenes. LOPA analysis also has its shortcomings. Compared with the qualitative analysis method, it is only for a specific scene for each time points Can not reflect the interaction between the various scenes. In addition, the frequency of the initial event and the requirements of the independent protective layer when the risk of failure probability And other data on the LOPA analysis of the results have a great impact, need to pay a lot of effort and accumulation in order to obtain these data. This semi-quantitative risk assessment method can reduce the subjectivity of the qualitative evaluation method, and the more complete quantitative evaluation method is easy to implement, In the risk assessment is more and more widely used. Protective Layer Analysis (LOPA) Application Guide

1 Scope

This standard specifies the relevant strategies and rules for LOPA analysis, including the technical description of LOPA analysis methods and the development of LOPA Analysis of the organization of the work requirements, such as preparation, analysis of meetings, analysis reports and recommendations of tracking and other aspects of the request, and given in the process Examples of different applications in industry. This standard applies to the process industry to carry out the protective layer analysis, other industries can also refer to the use.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. GB/T 20002.4-2015 drafting of specific content in the standard Part 4. content in the standard involving safety GB/T 21109.1-2007 Safety and functional aspects of process safety systems for process industries - Part 1. Frameworks, definitions, systems, hard Pieces and software requirements IEC 61508-4..2010 Functional safety of electrical/electronic/programmable electronic safety related systems - Part 4. Definitions and abbreviations (Functionalsafetyofelectrical/electronic/programmableelectronicsafety-realtedsystems-Part 4. Definitionsandabbreviations 3 terms and definitions, abbreviations 3.1 Terms and definitions GB/T 20002.4, GB/T 21109.1 and IEC 61508-4 and the following terms and definitions apply to this document. 3.1.1 Protective layer analysis layerofprotectionanalysis; LOPA A process method or system for assessing the effectiveness of an independent protective layer that reduces the frequency of an undesired event or the severity of the consequences. 3.1.2 Basic process control system basicprocesscontrolsystem; BPCS Respond to input signals from process, system-related devices, other programmable systems, and/or an operator, and generate A system that causes the process and system-related equipment to run as required, but it does not perform any instrument safety with a declared SIL ≥ 1 Features. Note. For the process area, the basic process control system is a global term. 3.1.3 Protective layer layerofprotect Equipment, facilities, or programs used to prevent the occurrence of undesired events or to reduce the severity of undesirable events and thereby reduce process risk. 3.1.4 Event event Process events that may occur due to equipment capability or personnel actions or external factors that affect the risk control system. ......

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