GJB2805B - 2021 Ventilation Door

GJB2805B-2021 is an important standard. The following content pertains to its application and design:

Scope of Application

Primarily applicable to the anti-theft construction and technical management of storage facilities such as storage and supply bases, campaign warehouses, and unit-affiliated warehouses responsible for the storage and supply support of ordnance equipment and materials. It also serves as an important basis for the design and production of related facilities and equipment for manufacturing enterprises.

Main Application Areas

• Ordnance Warehouses: This is the core application area of the standard, providing comprehensive technical requirements for the anti-theft security of ordnance warehouses. It covers the design, fabrication, and installation of various types of doors, such as protective doors, airtight doors, and ventilation doors, ensuring the safe storage of ordnance materials, preventing theft, and guaranteeing the smooth execution of operations.
• Other Critical Sites: Beyond ordnance warehouses, sites with high-security requirements, such as vaults, museum artifact storage rooms, document rooms, and secure rooms, can also refer to the relevant technical requirements in this standard when designing and constructing security facilities like protective doors to enhance their security protection capabilities.

Design Requirements

• Anti-Theft Level and Anti-Destruction Capability: Clearly specifies anti-theft requirements for different levels. For example, Level 2 anti-destruction capability must exceed 60 minutes, Level 1 must be no less than 40 minutes, etc. The design and material selection of related facilities and equipment must meet the anti-destruction capability requirements of the corresponding level.
• Material Selection: Typically requires the use of high-strength, high-toughness materials, such as steel, to ensure the strength and stability of the facilities. For instance, the main frame of ventilation doors uses high-strength steel profiles, with the main steel plate thickness being no less than 4mm; the main steel plate thickness of airtight doors is also no less than 4mm, and steel plates from reputable manufacturers must be selected.
• Structural Design: The structure must be rational, meeting various functional requirements such as anti-theft, moisture resistance, and explosion protection. For example, ventilation door grilles use vertical long and horizontal short staggered evenly spaced welding, ensuring ventilation functionality while blocking illegal intrusion; airtight doors employ multi-layer protection design and multiple locking systems to enhance their sealing and anti-theft capabilities.
• Sealing Performance: For airtight doors, ventilation doors, etc., sealing performance is a key design indicator. The design must consider the use of high-performance sealing strips and reliable compression sealing devices to ensure good sealing when the door is closed, meeting requirements such as light-tightness, air-tightness, and water-tightness.
• Lock Configuration: Each door should be equipped with standard-compliant locks, such as mechanical combination locks, with clear regulations on the installation position, method, and strength of the locks. For example, locks should be installed in concealed locations, and when bolted, no fewer than 4 bolts should be used, and they must not be removable or destructible from outside the door to enhance the anti-theft performance of the locks.
• Environmental Adaptability: Considering the various harsh environmental conditions that ordnance warehouses and other sites may face, the designed facilities and equipment must have good environmental adaptability, maintaining normal functionality and performance under extreme conditions such as high temperature, low temperature, and humidity.

Design and Application Cases

• Ship-Type Ventilation Door: Its fabrication strictly follows the GJB2805B-2021 standard, using high-strength alloy materials treated specially to enhance corrosion and wear resistance. The structural design is rational, employing multiple locking systems. It is mainly used in key facilities such as warehouses, ammunition depots, and equipment storage areas, effectively reducing the probability of theft and destruction incidents.
• Moisture-Resistant Ventilation Door: Designed and manufactured according to this standard, the moisture-resistant airtight door uses a steel structure with达标 steel plate thickness, treated for rust prevention, and installed firmly. It is equipped with rubber seals around the edges to achieve sealing requirements such as light-tightness, air-tightness, and water-tightness. Its anti-destruction capability also meets the corresponding level standards, making it suitable for moisture resistance and anti-theft needs in places like ordnance warehouses.
• Ventilation Door: Its design must meet anti-destruction capability requirements, such as anti-destruction time no less than 25 minutes or higher for different levels. In terms of material selection, the door frame and door leaf use seamless steel tube profiles no less than 4mm, and the grille uses 16x16mm square steel profiles, etc., with firm and reliable welding. It is also equipped with compliant locks and anti-theft devices, ensuring that the ventilation door provides good anti-theft performance while allowing air exchange. It can be used for ventilation and security protection in places like ordnance warehouses.