Three principles of radiation protection
- Keep as much distance as possible between yourself and the source of X-rays
- Keep the exposure time as short as possible.
- Place a shield between the source of X-rays and any people nearby.
1. Distance: Maintain a Safe Distance from the Source
Radiation intensity diminishes according to the inverse square law--doubling the distance reduces the dose to one-fourth. Establish a controlled area around the X-ray system. Use barriers, ropes, or floor markings to restrict access to authorized personnel only.
2. Time: Minimize Exposure Time
Monitoring radiation levels is essential for safety management. The following instruments are commonly used:
Survey Meters
Used to detect and measure real-time radiation levels in a specific location or around the equipment.
Pocket Dosimeters
Worn by personnel to monitor cumulative radiation exposure over a specific period.
3. Place a shield between the source of X-rays and any people nearby.
X-rays are attenuated as they pass through substances. The amount of attenuation depends on the substance. For substances of the same thickness, heavy metals with large atomic numbers have a higher shielding effect. For the same material, the greater the thickness, the higher the shielding effect. Lead is commonly used as a shield.
X-ray shielding partition
Lead apron

Lead gloves
Safety Features of Matsusada Precision X-ray Systems
Our X-ray inspection systems are engineered with multiple safety layers based on radiation protection principles.
Minimized X-ray Leakage
All products feature robust lead shielding to minimize surface radiation leakage, ensuring operator safety.
Auto-off Timer
The system automatically shuts off X-ray output after a preset time (up to 60 minutes) to prevent accidental continuous exposure.
Safety Interlock System
X-ray generation is immediately cut off if the enclosure door is opened during operation.
Emergency Stop
A prominent emergency stop button allows operators to instantly halt X-ray output and stage movement in critical situations.
X-ray shielding partition
We also offer shielding partitions that are embedded with lead for protection against X-rays.
Related Technical Articles
- What are X-rays? (Basic Knowledge)
- What is the difference between radioactivity, radiation, and radioactive materials?
- Understanding Radiation: Effects on the Body and X-ray Safety
- Principles of Radiography
- FAQ: Is a license required for usage of X-ray inspection system?
- FAQ: How can I use X-ray inspection systems safely?
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