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Incident

Any unintended event, including operating errors, equipment failures,

initiating events, accident precursors, near misses or other mishaps, or

unauthorized act, malicious or non-malicious, the

consequences or

potential consequences of which are not negligible

from the point of view of

protection or safety.

(IAEA Safety Glossary, 2007)

Radiation incident

The delivery of radiation during a course of RT is other than intended by

prescription, and

could have or did result in unnecessary harm

to the

patient.

(Towards safer radiotherapy, BJR 2008)

Incident

An unplanned

, undesired

event that

hinders completion of a task and may

cause injury, illness, or property damage

or some combination of all three in

varying degrees from minor to catastrophic. Unplanned and undesired do

not mean

unable to prevent.

Definitions