GB/T 23581-2025Storage equipment for loose bulk materials — Safety specification (English PDF)
散状物料用贮存设备 安全规范
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
August 29, 2025
Implementation date
March 1, 2026
Scope
GB/T 23581-2025 is the English-translated version of 散状物料用贮存设备 安全规范.
GB/T 23581-2025 is the Chinese national standard covering silos, bins and hoppers — the structural loads from the stored material, the bridging and rathole hazards and the clearing of them, the confined space entry that has buried people, the dust explosion protection, the access and guarding, and the marking and instructions. Entering a silo to clear a bridge is one of the recurring fatal accidents in bulk handling: the standard says how it is done. It replaces GB/T 23581-2009, under the China Machinery Industry Federation. In force from 1 March 2026. Issued on 29 August 2025, it has been in force since 1 March 2026, replacing GB/T 23581-2009.
Document preview — GB/T 23581-2025
National Standard of the People's Republic of China
- ICS
- 53.040.99
- Classification
- J 83
- Replacing
- GB/T 23581-2009
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- PrefaceIII
- 1 Scope1
- 2 Normative References1
- 3 Terms and Definitions1
- 4 General Requirements2
- 5 Design and manufacturing2
- 6 Installation and Debugging4
- 7 Operation and Maintenance4
- 8 Verification Methods5
- References6
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents". Drafting.
This document supersedes GB/T 23581-2009 "Safety Specifications for Storage Equipment for Bulk Materials". Compared with GB/T 23581-2009, The main technical changes are as follows.
— Added "Terms and Definitions" section (see Chapter 3);
— Added design requirements for use in explosive dust environments (see 5.1.5);
— The requirements for guardrails have been changed (see 5.1.6, 4.1.1.3.1 in the 2009 version);
— Added requirements for load values in the design of storage equipment, and the requirement to install a material quantity detection device and interlock it with the upstream feeding equipment. Please find (see 5.2, 5.3);
— Added requirements for the manufacturing process (see 5.6);
— The requirement for product user and maintenance manuals has been added (see 5.7);
— Added requirements for the use of lifting lugs (see 6.4);
— The requirement to set up safety warning signs on site has been added (see 6.6);
— Added requirements for comprehensive testing and acceptance before commissioning, including testing relevant parameters and checking safety devices (see 7.1.1);
— Added on-the-job training requirements (see 7.1.4, 7.2.1);
— Requirements for confined space operations have been added (see 7.2.4);
— Added content on "Verification Methods" (see Chapter 8).
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Technical Committee on Standardization of Continuous Handling Machinery (SAC/TC331).
This document was drafted by: Qinhuangdao Port Co., Ltd., Beijing Lifting and Transportation Machinery Design and Research Institute Co., Ltd., and Northern Heavy Industries Group.
Limited Liability Company, Keda Heavy Industry Group (Langxi) Co., Ltd., Beijing Kezhengping Engineering Technology Testing and Research Institute Co., Ltd., Jiaozuo Xinheng Heavy Industry Machinery Machinery Co., Ltd., Hubei Yidu Yunji Electromechanical Co., Ltd., Jiaozuo Keruisen Heavy Equipment Co., Ltd., Taiyuan University of Technology, Hubei Tianyi Machinery Co., Ltd.
The main drafters of this document are: Gu Senlei, Xing Lei, Xia Zhixin, Gao Yong, Ji Hongbo, Ni Yongshuai, Wang Yanyi, Wang Chuanping, Cao Shangjie, and Song Zhijie.
Wang Xuewen, Xiang Huaxing, Shan Chao.
The release history of this document and the document it replaces is as follows.
— First published in 2009 as GB/T 23581-2009;
— This is the first revision.
1 Scope
This document specifies the general requirements, design, manufacture, installation, commissioning, and operation of storage equipment for bulk materials such as silos, bins, and hoppers.
The content includes maintenance and verification methods, etc.
This document applies to the safety requirements during the design, manufacture, installation, commissioning, operation, and maintenance phases of storage equipment for bulk materials.
2 Normative references
GB/T 2893.5
GB 4053.1
GB 4053.2
GB 4053.3
GB 5083
GB 15577
GB/T 23580
GB/T 42598
GB/T 44523
GB 50016
GB 50058
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 silo
Vertical silos used for storing bulk materials.
Note. Generally, there are two types. storage warehouses and receiving warehouses.
3.2 Storage bins and bunkers
Storage equipment in bulk material handling systems mainly serves as intermediate storage, system buffer, and balancing operation.
3.3 Hopper hopper
Equipment used for collecting, buffering, storing, and conveying bulk materials.
Note. This includes different types such as fixed hoppers and mobile hoppers.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 2893.5Graphical symbols—Safety colours and safety signs—Part 5: Principles and requirements for the use of safety signs
- GB 4053.1Safety requirements for fixed metal ladders and platform - Part 1: Vertical ladders
- GB 4053.2Safety requirements for fixed metal ladders and platform - Part 2: Inclined ladders
- GB 4053.3Safety requirements for fixed metal ladders and platform - Part 3: Industrial guardrails and platform
- GB 5083General rules for designing the production facilities in accordance with safety and health requirements
- GB 15577Safety regulations for dust explosion prevention and protection
GB/T 23580 · GB 50058
Editions of GB/T 23581
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 23581-2025 | Storage equipment for loose bulk materials - Safety specification | current edition | Current |
| GB/T 23581-2009 | Storage equipment for loose bulk materials -- Safety code | previous edition | In force |
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Related Standards
GB 15577-2018 — Safety regulations for dust explosion prevention and protection
GB 4053.1-2009 — Safety requirements for fixed steel ladders and platforms - Part 1: Steel vertical ladders
GB 4053.1-2025 — Safety requirements for fixed metal ladders and platform - Part 1: Vertical ladders
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