During a night shift a technologist finds a leaking vial labeled with a trefoil in the nuclear medicine hallway and a small spill tracked toward general radiography, with no patients contaminated. Housekeeping is nearby and the RSO is on call. Which handling and disposal response should the radiographer initiate for this radioactive material incident?

The correct response is required because a trefoil-labeled leaking vial tracked toward general radiography is an unrestricted-area radioactive spill with no patients contaminated, requiring immediate isolation to stop spread, prompt RSO notification for supervised monitoring, dose assessment and documentation, and retention of waste in labeled shielding for licensed pickup, not trash or drains. The biohazard pickup approach fails containment by sending radioactive waste to routine biohazard pickup, violating segregation, labeling, shielding and decay-in-storage with controlled pickup and causing unlicensed release. The cleanup-before-notification approach fails authority by completing cleanup and survey before calling the RSO, replacing prompt RSO direction of protective actions, endpoints and reporting with night-shift independence despite tracking and housekeeping nearby. The hallway-only isolation approach fails spread control by limiting isolation to nuclear medicine despite explicit tracking toward general radiography, so perimeter, posting and survey must extend along the track. Exam caveat is infection-control or chemical-spill habits like bagging for biohazard or cleaning first then reporting remain wrong when radioactivity, tracking and licensed custody are stated. Practical check is stop movement, keep others out, notify RSO now, expand and secure boundaries, shield-label-retain waste, and document times, readings and location for pickup.