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GB/T 30578-2025: Risk-based inspection and evaluation for atmospheric pressure storage tanks
Status: Valid GB/T 30578: Evolution and historical versions
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| GB/T 30578-2025 | English | 919 |
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Risk-based inspection and evaluation for atmospheric pressure storage tanks
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GB/T 30578-2025
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| GB/T 30578-2014 | English | 859 |
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Risk-based inspection and evaluation for atmospheric pressure storage tanks
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GB/T 30578-2014
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Basic data | Standard ID | GB/T 30578-2025 (GB/T30578-2025) | | Description (Translated English) | Risk-based inspection and evaluation for atmospheric pressure storage tanks | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G93 | | Classification of International Standard | 23.020.10 | | Word Count Estimation | 46,424 | | Date of Issue | 2025-08-01 | | Date of Implementation | 2025-11-01 | | Older Standard (superseded by this standard) | GB/T 30578-2014 | | Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China | GB/T 30578-2025: Risk-based inspection and evaluation for atmospheric pressure storage tanks---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT30578-2025
ICS 23.020.10
CCSG93
National Standard of the People's Republic of China
Replaces GB/T 30578-2014
Risk-based inspection and evaluation of atmospheric pressure storage tanks
Released on August 1, 2025
Implementation on November 1, 2025
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms, definitions and symbols 1
4 General Requirements 2
5 Risk Analysis 2
6 Inspection strategy development 5
7 Verification Strategy Implementation 9
Appendix A (Normative) Thinning Damage Factor 10
Appendix B (Normative) Empirical method for determining the corrosion rate of the bottom plate of atmospheric pressure storage tanks 16
Appendix C (Normative) Quantitative Calculation Process of Failure Consequences 22
Appendix D (Informative) Inspection and Result Evaluation of Atmospheric Pressure Storage Tanks 32
Reference 38
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 30578-2014 "Risk-based inspection and evaluation of atmospheric pressure storage tanks" and is consistent with GB/T 30578-2014.
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) Added terms and definitions (see 3.1);
b) Added a risk matrix diagram corresponding to risk values (see 5.1);
c) Added the failure probability classification determined by the damage coefficient calculation results (see 5.3.2);
d) The general provisions on risk-based inspection have been modified (see Chapter 6, Chapter 6 of the.2014 edition);
e) The inspection types and selection principles in risk-based inspection have been changed (see Chapter 6, Chapter 6 of the.2014 edition);
f) Added detection methods and test effectiveness (see Table 5);
g) The effectiveness classification and inspection method for corrosion thinning have been changed (see 6.5.2.4, 6.5.2.4 of the.2014 edition);
h) The basic assumptions for evaluating corrosion rates have been changed (see A.3, A.3 of the.2014 edition);
i) The soil condition adjustment factor has been changed (see Table B.4, Table B.4 of the.2014 edition);
j) Added soil side temperature adjustment coefficient for stainless steel materials (see Table B.9);
k) Changed the medium side temperature range in the medium side temperature adjustment coefficient table for carbon steel and low alloy steel, and added the medium side temperature adjustment coefficient for stainless steel
Temperature adjustment factor (see Table B.12, Table B.12 of the.2014 edition);
l) Added basic assumptions for quantitative calculation of failure consequences (see C.1);
m) The definitions of some symbols have been changed (see C.2, C.1 of the.2014 edition).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document is proposed and coordinated by the National Technical Committee for Standardization of Boilers and Pressure Vessels (SAC/TC262).
This document was drafted by. China Special Equipment Testing and Research Institute, SINOMACH Special Equipment Inspection Co., Ltd., and Zhenhai National Petroleum Reserve Base.
Co., Ltd., China National Petroleum Corporation Commercial Reserve Oil Branch, Sinopec Group Oil Commercial Reserve Co., Ltd.
Sinopec Zhenhai Refining and Chemical Company, Jiangsu Special Equipment Safety Supervision and Inspection Institute, Nanjing Boiler Pressure Equipment Co., Ltd.
Pressure Vessel Inspection Institute, Sinopec Hainan Refining and Chemical Co., Ltd., China Institute of Work Safety Science and Technology, Shanghai Special Equipment Supervision
Inspection Technology Research Institute, Ningbo Special Equipment Inspection Institute, Sinopec Sales Co., Ltd. Jiangsu Petroleum Branch, Anhui Huaxia
High-tech Development Co., Ltd. and China Special Inspection Group Co., Ltd.
The main drafters of this document are. Li Guanghai, Shi Xiushan, Jia Guodong, Yan He, Shao Shanshan, Wang Weihua, Chen Wei, Zhou Wenxiang, Xing Shu, Wang Shi,
Chen Zhongguan, Wang Jinlong, Wu Hongjun, Wu Jun, Yu Yongliang, An Yongming, Shi Heqiu, Du Liang, Chu Yun, Song Pan, Chen Hu, Lin Yuanlong, Zhu Junshan, Zhao Shijia,
Zhang Dengyu, Han Lizhe, Chen Yanze, Li Huan, Guo Hong, and Xie Xiaodong.
This document was first published in.2014 and this is the first revision.
Risk-based inspection and evaluation of atmospheric pressure storage tanks
1 Scope
This document describes a risk-based inspection and evaluation approach for vertical cylindrical steel welded atmospheric storage tanks.
This document applies to the risk-based inspection and evaluation of vertical cylindrical steel welded atmospheric pressure storage tanks. Other atmospheric or low pressure (working pressure
The risk-based inspection and evaluation of storage tanks (less than 0.1MPa) can be carried out in accordance with this document.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 26610.1 Guidelines for the implementation of risk-based inspections of pressure equipment systems Part 1.Basic requirements and implementation procedures
GB/T 26610.2 Guidelines for the implementation of risk-based inspections for pressure equipment systems Part 2.Risk-based inspection strategies
GB/T 26610.4 Guidelines for the implementation of risk-based inspections for pressure equipment systems Part 4.Quantitative analysis method for failure probability
GB/T 26610.5 Guidelines for the implementation of risk-based inspections for pressure equipment systems Part 5.Quantitative analysis methods for the consequences of failure
3 Terms, definitions and symbols
3.1 Terms and Definitions
The terms and definitions defined in GB/T 26610.1, GB/T 26610.2 and GB/T 26610.5 and the following terms and definitions apply to this document.
3.1.1
Off-line inspection
Inspection of the inside and outside of a tank after emptying the tank of its contents.
3.1.2
Online inspection
Inspection of storage tanks without removing the medium from the tanks.
3.1.3
Fitness-for-service assessment
Evaluate storage tanks or their components that contain excessive defects or do not meet relevant standard requirements to determine whether they can continue to serve.
process.
3.2 Notation
The following symbols apply to this document.
C(t)---consequences of failure.
Df-total---total damage coefficient, that is, the sum of all damage factors.
Dbritf-gov---brittle fracture damage factor.
Delinf --- Lining destruction factor.
Dextdf-gov---External damage factor.
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