Question

A locked storage closet next to the radiopharmacy containing phantoms and sealed sources has a measured exposure rate of 3 mR/hr. It should be posted with a sign reading:

a. Caution: radioactive materials
b. Caution: radioactive area
c. Caution: high radiation area
d. Grave danger: very high radiation area
e. no sign necessary

Answer 1

The correct sign to be posted on the storage closet containing radioactive materials is 'Caution: radioactive materials'.

Step-by-step explanation:

The correct sign to be posted on the locked storage closet next to the radiopharmacy would be a. Caution: radioactive materials. The measured exposure rate of 3 mR/hr indicates the presence of radioactive materials, which require special safety precautions to be taken. The sign serves as a warning to anyone entering the area to be cautious and aware of the potential radiation hazards.