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GB/T 33679-2026: Storage conditions for combustion agents and cooling agents used in weather modification
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GB/T 33679-2026: Storage conditions for combustion agents and cooling agents used in weather modification

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ICS 07.060 CCSA47 National Standards of the People's Republic of China Replaces GB/T 33679-2017 The use of propellants and refrigerants in weather modification Storage technology conditions Implemented on June 1, 2026 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Table of contents

Preface III 1.Scope 1 2 Normative References 1 3.Terms and Definitions 1 4.Storage Method 1 5 Storage locations 2 6.Emergency Response Measures 2 References 3

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 33679-2017 "Technical Conditions for Storage of Propellants and Refrigerants for Weather Modification" and is consistent with... Compared with GB/T 33679-2017, apart from structural adjustments and editorial changes, the main technical changes are as follows. a) The terms "combustion agent" and "refrigerant" have been added (see 3.1 and 3.2), while the terms "isolated storage," "separate storage," and "separate storage" have been deleted. (See sections 3.1, 3.2, and 3.3 in the.2017 edition); b) The "Categories" section has been removed (see Chapter 4 in the.2017 edition); c) The storage requirements for refrigerant containers have been changed [see 4.2c), 5.14 of the.2017 edition; d) The requirements for fire protection facilities in storage areas have been changed [see Chapter 5c), 5.6 of the.2017 edition]; e) Increased requirements for configuring alarm devices in storage locations [see Chapter 5 d)]; f) The requirements for static electricity protection at propellant storage sites have been changed [see Chapter 5f, 5.8 of the.2017 edition]; g) The requirement for a storage location identifier has been removed [see 5.9 and 5.10 of the.2017 edition]; h) The ventilation requirements for storage areas have been changed [see Chapter 5g), 5.19 of the.2017 edition]; i) An "Emergency Response Measures" section has been added (see Chapter 6). 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 Meteorological Administration. This document is under the jurisdiction of the National Technical Committee on Standardization of Artificial Weather Modification (SAC/TC538). This document was drafted by. Shaanxi Provincial Artificial Weather Modification Center and Shaanxi Zhongtian Rocket Technology Co., Ltd. The main drafters of this document are. Li Yan, Yue Zhiguo, Wang Jin, Wu Yuzhong, Liang Yi, Sun Yongtao, Wu Yixuan, Zhang Hebing, and Zheng Suixiang. The release history of this document and the document it replaces is as follows. ---First published in.2017 as GB/T 33679-2017; ---This is the first revision. Artificial weather modification uses propellants and refrigerants Storage technology conditions

1 Scope

This document specifies the storage methods, storage locations, and emergency response measures for propellants and refrigerants used in weather modification. This document applies to the storage and management of propellants and refrigerants used in weather modification operations. This document does not apply to the storage of fuels and refrigerants during the production process.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB 30000.1-2024 Chemical Classification and Labelling Specifications Part 1.General Rules GB 50057-2010 Code for Design of Lightning Protection of Buildings GB 55037-2022 General Code for Fire Protection of Buildings

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Combustion agent for weather modification Combustible mixtures that produce artificial ice nuclei or hygroscopic nuclei by burning silver iodide or hygroscopic salts. 3.2 [Weather Modification] Coolant Substances that can cause cloud droplets and fog droplets to form ice crystals through cooling. Note. Refrigerants used in weather modification include liquid nitrogen, dry ice, and liquid carbon dioxide. 4.Storage method 4.1 Propellants and refrigerants should not be stored in the open air, but should be stored in buildings or containers. 4.2 The propellant and refrigerant shall be stored in the following manner. a) Palletizing. 1) Propellants and dry ice. should be stored in stacks, with a stacking height not exceeding 1.6m; 2) Liquid nitrogen and liquid carbon dioxide. should not be stored in stacks. b) Channel. 1) Width should be set between propellants and refrigerants, and between different types/models/batches of propellants or refrigerants. A passageway at least 0.6m wide; 2) A passage with a width of not less than 1.2m should be provided between each stack of propellant, refrigerant and the entrance/exit of the storage area. ...