Which regulatory requirement addresses posting and notification of radiation hazards to workers?

• A. 10 CFR Part 19 requires notices, instructions, and reports to workers; 10 CFR Part 20 governs radiation protection standards and dose limits.
• B. 10 CFR Part 10
• C. 10 CFR Part 30
• D. 10 CFR Part 45

Answer: (A)

Posting and notifying workers about radiation hazards is addressed by regulations that require communicating hazard information in the workplace. The rule that directly mandates notices, instructions, and reports to workers is 10 CFR Part 19, which covers posting hazard information and ensuring workers are informed. 10 CFR Part 20 provides the overarching radiation protection standards and dose limits, forming the safety framework but not the specific posting requirement. The other parts focus on licensing or program rules for particular materials or activities rather than hazard communication. So the option that pairs worker notices (Part 19) with the protection standards context (Part 20) best fits the question.