While providing basic cleanroom isolation functions, the X-ray Protection Pass Box's core function is shielding against ionizing radiation. It effectively blocks the penetration of X-rays, gamma rays, and other radiation, preventing radiation leakage through transmission channels and protecting operators from radiation hazards. It is a specialized device for use in radiology departments, nuclear medicine departments, and radiation laboratories.

Working Principle of the Radiation-Proof Pass-Thru Window

Physical Shielding

The pass-thru window features internal lead panels, and the observation window utilizes radiation-proof lead glass.

Lead absorbs high-energy ionizing radiation, such as X-rays and γ-rays, reducing radiation intensity through physical barrier protection, protecting both the operator and the surrounding environment.

Sealed Isolation

The double-door interlocking design prevents both doors from opening simultaneously, preventing air convection and cross-contamination.

High-pressure sealing rubber strips further ensure airtightness, preventing the spread of radioactive dust or gas into clean or non-radiation areas.

Visual Monitoring

The radiation-proof lead glass provides a transparent observation window, allowing operators to confirm the status of items without opening the window or door.

This reduces the number of openings and closings, minimizing radiation exposure and environmental contamination risks.

Safety Transfer Mechanism

An interlocking system or mechanical stop allows only one-way access during the transfer process, enhancing safety.

Materials for Radiation-Proof Transfer Window

Body

High-quality cold-rolled steel (surface electrostatically sprayed with plastic) for durability and a smooth appearance.

Stainless steel (SUS304/SUS316) offers strong corrosion resistance and is commonly used in medical, pharmaceutical, and nuclear medicine laboratories.

Radiation Shielding

Lead Plate: This is the core shielding material of the radiation-proof transfer window. Its thickness is determined by the radiation intensity of the location, generally ranging from 2mm to 10mm.

Lead plates are embedded between the body and the door to prevent radiation leakage.

Observation Window

Lead Glass: Blocks X-rays and γ-rays while maintaining transparency for easy observation.

Common thicknesses range from 8mm to 20mm, depending on the radiation intensity.

Seals and Hardware

High-pressure rubber strips: Ensure airtightness and prevent leakage of radioactive dust or gas.

Mechanical or electronic interlocks: Ensure both doors cannot be opened simultaneously, enhancing safety.

Applicable Environments

• Radiology department

• Nuclear medicine laboratory

• Isotope production workshop

• Radiograph room

• Radiotherapy center

• Other places where ionizing radiation is present

Specifications

FAQ

Q1: What types of environments are radiation-proof transfer windows suitable for?
A: Common applications include radiology departments, nuclear medicine laboratories, isotope production workshops, radiography rooms, radiotherapy centers, and other clean environments requiring radiation protection.

Q2: How is the thickness of the lead sheet in the transfer window determined?
A: The thickness of the lead sheet typically ranges from 2mm to 10mm, depending on the specific radiation source energy and dose. For example, thinner lead sheets may be suitable for ordinary X-rays, while thicker shielding may be required for high-energy γ-rays or environments with large equipment.

Q3: What is the difference between a radiation-proof transfer window and a standard transfer window?
A: Standard transfer windows are primarily used for clean isolation, while radiation-proof transfer windows add the shielding function of lead sheets and lead glass, ensuring cleanliness while preventing radiation leakage.