Gamma radiation transmission along the multibend mazes

Area of Science:

• Radiation shielding
• Applied physics
• Nuclear engineering

Background:

• Traditional radiation shielding doors are costly and bulky.
• Maze structures offer an alternative method for radiation attenuation.
• Optimizing maze design can reduce material requirements and effective dose.

Purpose of the Study:

• To investigate the efficacy of maze structures in reducing gamma radiation transmission.
• To determine the required corridor lengths for double- and triple-bend mazes to meet dose limitations.
• To evaluate the potential for material savings in shielding doors by using maze designs.

Main Methods:

• Gamma transmission measurements were simulated using the Monte Carlo method.
• The study analyzed single-, double-, and triple-bend maze configurations.
• Simulations were conducted for a facility using Iridium-192 (192Ir) at 1.85 TBq.

Main Results:

• Double- and triple-bend mazes significantly reduce gamma transmission.
• A 10m corridor in a double-bend maze was sufficient to reduce effective dose below limits.
• A 6m corridor in a triple-bend maze achieved the same dose reduction.
• Maze installation reduces the necessity for heavy shielding doors.

Conclusions:

• Maze structures are an effective and material-efficient alternative to traditional shielding doors.
• Optimized maze designs, particularly triple-bend configurations, offer substantial space and material savings.
• The findings support the application of maze pathways in nondestructive testing workplaces to manage radiation exposure.