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
- Nuclear medicine laboratory
- Isotope production workshop
- Other places where ionizing radiation is present
Specifications
| Model | CDC-400 | CDC-500 | CDC-600 | CDC-800 |
| Out size(W*D*H) | 400*400*400 | 500*500*500 | 600*600*600 | 800*800*800 |
| Inner size(W*D*H) | 300*300*300 | 400*400*400 | 500*500*500 | 700*700*700 |
| Door type | Built-in double toughened glass door |
| Material | 1.0 mm SUS304 or SUS201 or coated steel |
| Interlocking structure | Electronic interlock or mechanical interlock |
| Voltage | AC 220V/50HZ |
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.
