When must NRC Form 4 be completed in relation to radiation exposure?

• A. Completed before exposure
• B. Completed after exposure
• C. Not required
• D. Completed at retirement

Answer: (A)

The main idea here is that formal authorization and protection steps must be in place before any radiation is delivered. NRC Form 4 serves as the documented plan and consent for the exposure, detailing who is involved, what procedure will be done, what safety controls are in place, and the expected dose. Completing it before exposure ensures the exposure is justified, that protective measures and monitoring are arranged, and that a written record exists for regulatory accountability. Doing this after exposure would miss critical safety and regulatory requirements, and the other options—not required or done at retirement—don’t align with the need to have formal approval and safeguards established prior to any radiation delivery.