Final answer:
The order of precedence for establishing countermeasures includes warning devices, shielding, and personal protective equipment, with devices like Geiger counters, scintillators, and dosimeters used to measure radiation and ensure safety.
Step-by-step explanation:
The order of precedence for establishing countermeasures in environments where radiation is present includes warning devices, and other protective measures such as shielding and physical barriers. Countermeasures are critical for ensuring the safety of individuals exposed to potentially harmful levels of radiation. Devices like Geiger counters, scintillators, and dosimeters are important tools used in these situations to measure radiation levels and ensure that individuals are not exposed to doses that exceed safety guidelines.
Geiger counters are used to detect and measure ionizing radiation. Scintillators are used to detect when a particle of radiation is present and convert it to a measurable amount of light. Finally, dosimeters are worn by individuals to measure the accrued exposure to radiation over time, ensuring that they do not exceed the permissible dose.
In addition to personal monitoring devices, electrical safety systems and devices are employed to prevent thermal and shock hazards, which can be secondary concerns in environments with high levels of radiation or electrical equipment.