Ontario Power Generation (OPG) Orange 1 Practice Test

What approval is required before entering a radioactive area?

Authorization from the radiography crew leader, and direct supervision of an RPC Authorization from the radiography crew leader only Direct supervision of an RPC only No approval needed

Correct Answer:

Authorization from the radiography crew leader, and direct supervision of an RPC

Explanation:

Access to a radioactive area must be tightly controlled to protect workers from radiation exposure. The necessary entry approval combines both authorization and supervision. The radiography crew leader is the person who authorizes a worker to enter, confirming they have the proper training, qualifications, and assignment. The direct supervision by the RPC (Radiation Protection Coordinator) ensures ongoing safety oversight while inside the area, enforcing procedures, monitoring dosimetry, and ensuring that all controls—shielding, PPE, access logs, and work procedures—are correctly followed. Without either element, there’s a risk of entering without clearance or without immediate protection and guidance, increasing exposure risk.

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