Radiation Health & SafetyQuestion 17 of 100
A receptionist who never operates x-ray equipment sits at a desk near the operatory wall. Which annual dose limit applies to her?
a.5 rem, the same as an occupationally exposed worker
b.0.1 rem (0.001 Sv), the limit for non-occupationally exposed persons
c.There is no limit because she is an employee
d.10 rem, because she is inside the building
Explanation
Staff who are not occupationally exposed to radiation are held to the much lower public limit of 0.1 rem (0.001 Sv) per year. The 5 rem limit applies only to workers whose duties involve radiation. There is always a limit for any person, and 10 rem is not a recognized annual limit for anyone in a dental setting.
Law Reference: NCRP Report No. 145: Radiation Protection in DentistryPractice all 100 questions free — no signup required.
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