GB/T 26610.2-2022Guideline for implementation of risk-based inspection of pressure equipment system—Part 2:Risk-based inspection plan (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

This document is part 2 of GB/T 26610 "Implementation Guidelines for Risk-Based Inspection of Pressure Equipment Systems". GB/T 26610 has The following sections were published.

--- Part 1: Basic requirements and implementation procedures;

--- Part 2: Risk-based inspection strategies;

--- Part 3: Qualitative analysis methods of risk;

--- Part 4: Quantitative analysis method of failure probability;

--- Part 5: Quantitative analysis methods for failure consequences.

This document replaces GB/T 26610.2-2014 "Implementation Guidelines for Risk-Based Inspection of Pressure Equipment Systems Part 2: Risk-based Compared with GB/T 26610.2-2014, in addition to structural adjustment and editorial changes, the main technical changes are as follows.

a) The term "corrosion loop" was deleted from the terms and definitions (see 3.2 of the 2014 edition), and the "assessment time point" and "the time of this shutdown for maintenance" were added. "time point" "time point of next downtime maintenance" (see 3.3, 3.4 and 3.5);

b) Changed "focus on potential damage modes" to "focus on primary damage modes of equipment" in the Basic Principles (see 4.1, 2014 version 4.1);

c) The requirements for testing knowledge have been added to the requirements for personnel and units (see 4.2);

d) The basis for formulating inspection strategies and the implementation of inspection strategies are added (see 4.3.3, 4.3.5);

e) The basis for determining the scope of inspection has been changed [see 4.4a), 4.4a) of the 2014 edition];

f) Added "internal inspection at shutdown" (see 6.1.2), correspondingly adjusted the selection principle of pipeline inspection type (see 6.2.2, 2014 edition) 6.2.2);

g) Added "Principles for the removal of thermal insulation and lining" (see 6.4, Appendix D);

h) Change "inspection method" to "inspection method" (see Chapter 7, Chapter 7 of the 2014 edition);

i) Changed the detection method and the determination principle of detection ratio (see 7.1.1, 7.1.1 of the 2014 edition);

j) Added the clauses of consequence control, the situation of multiple injuries at the same time, and the content of online monitoring (see 7.1.4, 7.1.5, 7.1.6);

k) Changed the shutdown detection method and inspection effectiveness (see Table 2 in 7.2.2, Table 2 in the 2014 edition), online detection methods and inspection Effectiveness (see Table 3 in 7.2.2, Table 3 in the 2014 edition), online monitoring methods and testing effectiveness (see Table 4 in 7.2.2);

l) The requirements for the inspection results in the implementation of the inspection strategy are deleted (see 8.2 of the 2014 edition);

m) Changed the extension inspection requirements (see 8.2, 8.3 of the 2014 edition) and the reassessment requirements (see 8.3, 8.4 of the 2014 edition);

n) The determination principle of the next inspection time is added (see 8.4);

o) Changed the inspection strategy of the safety relief device, increased the content of the inspection strategy of the bursting disc (see Appendix A), increased the inspection type and inspection test validity (see A.3);

p) Added the bursting disc inspection time adjustment table (see Table A.4);

q) Changed the requirements for the longest inspection time of the safety relief device (see A.3.1, A.4.1 of the 2014 edition);

r) Changed the risk calculation formula of safety relief device [see formula (A.3), formula (A.4) of 2014 edition];

s) Changed the life extension factor for replacement of spare tube bundles (see Table B.1, Table B.1 of the 2014 edition);

t) Added the calculation basis for the failure probability of the tube bundle and the cost of the production loss of the tube bundle, the cost of environmental impact, the cost of the replacement of the tube bundle, and the inspection and maintenance of the tube bundle Selection basis for repair costs (see B.4.2);

u) Added the detection of tube bundles (see B.5);

v) Changed the recommended inspection scope of vessels and pipes (see Table C.1, Table C.2, Table C.1 and Table C.2 of the 2014 edition) and priority sampling Conditions (see C.5, C.5 of the 2014 edition);

w) Changed the scope of equipment for taking risk reduction measures (see C.6, C.7, C.6, C.7 of the 2014 edition);

x) Added the informative appendix "Principles for the removal of thermal insulation and lining" (see Appendix D);

y) Changed "Damage Mechanism" to "Damage Mode" in the full text.

Introduction

Risk-based inspection technology has a wealth of application cases in refining and chemical companies around the world. To ensure risk-based inspection techniques It has been standardized in China to promote the wide application and development of risk-based inspection technology in China, and a standard system for pressure equipment in service has been established.

Within this standard system, GB/T 26610 "Implementation Guidelines for Risk-Based Inspection of Pressure Equipment Systems" stipulates that risk-based pressure equipment systems are

GB/T 26610 is generally applicable to pressure equipment System, GB/T 26610 consists of five parts.

--- Part 1: Basic requirements and implementation procedures. Provide relevant terms and definitions for risk-based inspection of pressure equipment systems, standardize wind Risk assessment workflow, proposed data collection, damage pattern recognition, failure probability and failure consequence calculation, risk management, risk management General requirements for mitigation measures, reassessments, etc.

--- Part 2: Risk-based inspection strategies. Specify the inspection time, inspection type, inspection method and inspection under typical damage categories Effectiveness and other requirements and contents, and guide risk assessors to scientifically formulate inspection strategies.

--- Part 3: Qualitative analysis methods of risk. Guide risk assessors to carry out qualitative risk analysis of pressure equipment systems.

--- Part 4: Quantitative analysis methods for failure probability. Standardize the failure probability quantitative analysis program to determine the average failure probability, design Equipment correction coefficient, management system evaluation coefficient, and over-standard defect influence coefficient to guide the quantification of the failure probability of pressure equipment systems calculate.

--- Part 5: Quantitative analysis methods for failure consequences. The general principles of quantitative analysis of failure consequences are given, and the selection of representative fluids is determined.

Extraction, leakage analysis, area consequence calculation, cost consequence calculation, and guide the quantitative calculation of failure consequence of pressure equipment system.

Part 1 of GB/T 26610 was first formulated in 2011, and the remaining parts were formulated for the first time in 2014. After years of use,

GB/T 26610 guides the risk-based inspection of domestic pressure equipment systems. Among them GB/T 26610.2 gives the pressure equipment The system is based on the formulation method of risk strategy, which clarifies the inspection time, inspection type, typical damage shutdown and online inspection methods and their effectiveness (Some online detection methods have been adopted by relevant regulations), in guiding risk assessors to accurately and scientifically formulate inspection strategies for pressure-bearing systems face played an important role. Risk-based inspection work needs to be carried out in accordance with the basic requirements and implementation procedures specified in GB/T 26610.1.

After using GB/T 26610.3, GB/T 26610.4, and GB/T 26610.5 to determine the risk of equipment, make inspections in accordance with GB/T 26610.2 Strategy.

In recent years, some new changes have prompted the revision of various parts of GB/T 26610. First, the regulatory requirements for inspection work have changed The revisions of TSG21 and TSGD7005 were completed in 2016 and 2018, respectively, and some new requirements were proposed in risk-based inspection. beg. Secondly, the new technology of non-destructive testing has developed rapidly, and some of them have been successfully applied in the inspection and testing of pressure equipment, which has also enriched the inspection strategy.

The selection of inspection methods meets the requirements of on-line inspection and on-line monitoring of equipment in practice. Again, through years of practice, each phase The relevant units also summarized some new experiences and data in the process of developing and implementing the risk-based inspection strategy.

Therefore, in order to meet the requirements of laws and regulations; combined with the feedback and experience summary during the implementation of GB/T 26610.2-2014, the domestic The innovative research results obtained in RBI technology, as well as the latest progress of foreign RBI technology and related standards; relying on national priorities The key technology research of the research and development plan project "High-parameter pressure special equipment risk prevention and control and key technology research" has been completed. Revision of GB/T 26610.2-2014.

1 Scope

This document specifies the risk-based inspection strategy for pressure equipment systems (including inspection time, inspection type, inspection method and inspection validity sex, etc.) method.

This document applies to the pressure equipment system referred to in GB/T 26610.1.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 26610.1 Implementation Guidelines for Risk-Based Inspection of Pressure Equipment Systems Part 1: Basic Requirements and Implementation Procedures

GB/T 26610.3 Implementation Guidelines for Risk-Based Inspection of Pressure Equipment Systems Part 3: Qualitative Analysis Methods of Risk

GB/T 26610.4-2022 Implementation Guidelines for Risk-Based Inspection of Pressure Equipment Systems Part 4: Quantitative Analysis of Failure Probability method

GB/T 26610.5-2022 Implementation Guidelines for Risk-Based Inspection of Pressure Equipment Systems Part 5: Quantitative Analysis of Failure Consequences method

3 Terms and Definitions

GB/T 26610.1 as well as the following terms and definitions apply to this document.