GB/T 35621-2017 in English
VALIDGeneral technical requirements of public shelter in major toxic gas leakage accident
- Issued on:2017-12-29
- Implemented on:2018-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 35621-2017重大毒气泄漏事故公众避难室通用技术要求》由TC351（全国公共安全基础标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Interpretation of the National Standard of the People's Republic of China GB/T 35621—2017
Technical Requirements and Specifications for Public Shelters in Major Toxic Gas Leakage Accidents
| Types of Shelters | Functional Features | Technical Parameters | Applicable Scenarios |
|---|---|---|---|
| Simple Public Shelters | Applicable to short-term evacuation, with moderate sealing requirements | The air exchange rate is not less than the calculated minimum safety value | Ordinary residential buildings or temporary emergency sites |
| Ordinary Public Shelters | No positive pressure device, suitable for medium-term shelter | Indoor air pressure is balanced with outdoor air pressure | ew row>Long-term emergency place around the dangerous area |
| Positive pressure public shelter | Dedicated fresh air system, suitable for long-term shelter | Internal air pressure not less than 10Pa | High-risk area or long-term emergency needs |
Explanation of professional terms and practical application cases
Positive Pressure Shelter: The internal air pressure is higher than the external air pressure, and the positive pressure state is maintained by the fresh air system to prevent toxic gas infiltration. For example, the positive pressure public refuge room set up around the chemical plant can effectively protect the lives of residents in the event of a toxic gas leak.
Technical Background and Evolution Analysis
This standard is based on GB/T1.1-2009 and combines the practical experience of domestic and foreign emergency management systems. The technical requirements for positive pressure refuge rooms have absorbed international advanced experience, especially in terms of fresh air systems and sealing performance.
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