Immediate notification is required for a shallow-dose equivalent to the skin or extremities of how many rads?

• A. 125 rads
• B. 500 rads
• C. 250 rads
• D. 100 rads

Answer: (C)

Shallow-dose equivalent to the skin or extremities is the dose used for external exposures to superficial tissues, since skin has different sensitivity than deeper organs. The regulatory trigger for prompt reporting is set at the level where potential skin damage could occur and where a rapid investigation is warranted. That threshold is 250 rads. Reaching or exceeding this dose means immediate notification is required to protect the worker and to promptly address the incident. Doses well below this level don’t require immediate notification, though they’re still reviewed and recorded as part of safety oversight. Very high doses would certainly demand action beyond the minimum, but 250 rads is the defined point for immediate reporting.