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Lead door airtightness and radiation protection:Lead doors, designed specifically for blocking radiation, are an essential facility for both entry and exit. Their airtightness and radiation shielding properties are crucial considerations during design and selection. Below is a detailed introduction to the airtightness and radiation shielding of lead doors:
The airtightness of lead doors refers to their ability to prevent external air from entering or internal air from leaking out when closed. Good airtightness is crucial for maintaining a constant environment in the work area and preventing radiation leakage.
Design Features of Airtight Door
Sealed System: Air-tight doors typically feature special sealing systems, such as rubber strips, to ensure a tight fit with the door frame when closed, thereby achieving excellent airtightness.
Structural Design: Some airtight door designs cater to specific environment requirements, such as operating rooms, featuring V-shaped tracks and arched recesses that ensure effective sealing upon closure.
2. Actual Application of Airtight Doors
Hospital Application: In a hospital setting, particularly in areas requiring radiation shielding such as CT and DR rooms, the airtightness of the airlock doors is crucial for protecting medical staff and patients from unnecessary radiation exposure.
Safety Considerations: Airtight doors also serve as a security measure, typically made of high-density anti-theft steel wire mesh, which offers shock resistance and anti-tampering features.
Radiation protection of lead doors
Radiation protection of lead doors refers to their ability to block radiation. Lead doors are typically made of lead material, as lead possesses a high atomic number, which allows it to effectively absorb and scatter X-rays and other types of radiation.
Principle of radiation protection for lead doors
Shielding Effect: Lead doors utilize a certain thickness of lead material to set up a lead barrier between the human body and the radioactive source or scatterer, thereby reducing the dose of radiation exposure to the human body.
Ray Characteristics: The main effect of X-rays emitted by X-ray devices on the human body comes from external radiation damage to the organism. Shielding protection can effectively reduce the dose received by personnel.
2. Selection Criteria for Lead Doors
Shielding Thickness: When selecting lead doors, the appropriate shielding thickness should be determined based on factors such as the radiation source characteristics, room size (including the distance from the radiation source to the reference point), and other considerations.

Other considerations: In addition to airtightness and radiation protection, factors such as the lead door's lifespan, ease of maintenance, and compatibility with the surrounding environment should also be taken into account.

Single-leaf lead door, as the name implies, consists of just one door panel and is suitable for smaller entryways. This type of lead door has a relatively simple structure and is commonly used in spaces with limited space, such as laboratories, small medical radiology departments, etc. The single-leaf lead door is more flexible in opening and closing and operates simply, with the added benefit of a lower cost due to its single structure.
Single-leaf lead door opening and closing method
Single-Sided Opening: This is the most common opening method for single-leaf lead doors. The door leaf is connected by hinges and can open to one side or both sides. In smaller spaces, the single-sided opening ensures adequate passage while maintaining the simplicity of the structure and ease of operation.
Bi-leaf Lead Door Introduction
Double-leaf lead doors consist of two panels separated by a certain distance, allowing for either individual or simultaneous opening. These doors are suitable for larger entryways, such as in large medical radiology departments, radiation therapy rooms, and other situations requiring ample passage space or frequent access. Double-leaf lead doors offer superior protection, passage space, and safety.
The features of the double-leaf lead door include:
Safety and Reliability: Made with high-quality lead material, it boasts strong impact resistance and anti-theft capabilities, effectively preventing illegal intrusion.
Convenient Access: The two doors can be opened individually or simultaneously, making it very easy for users to enter and exit without having to wait for others.
High space utilization: Compared to traditional single-door designs, double-leaf lead doors require only half the width to enter, thus saving indoor space and better accommodating narrow passages.
High durability: Made with special processes, surface treated for corrosion resistance, can withstand harsh conditions for extended periods without damage.
Double-leaf lead door opening method
Double-Swing Doors: Ideal for spacious corridors, these doors open outwards to the sides, leaving a clear passage in the middle for greater in-and-out space. This opening method efficiently accommodates the needs of large groups or heavy equipment entry and exit.


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