What is the minimum required overlap between the primary and secondary protective barriers?

The minimum required overlap between the primary and secondary protective barriers is 1/2 inch. This specification is important in radiation safety and shielding design, particularly in environments where radiological procedures are performed.

The primary barrier is designed to protect against radiation that is directed towards it, while the secondary barrier provides additional protection against scatter radiation or leakage from the primary barrier. The required overlap ensures that there is no gap where radiation can escape, which could compromise safety in areas where individuals may be present. The 1/2 inch overlap is established based on safety standards to provide adequate coverage without unnecessarily increasing material costs or construction challenges.

Ensuring proper overlap contributes to maintaining dose limits and minimizing exposure, which is critical in protecting healthcare workers and patients from radiation effects.