Emergency Classifications

If an emergency were to occur at a nuclear facility, it would be classified on one of four levels. This four-level emergency classification system has been established by the US Nuclear Regulatory Commission.

• Unusual Event - The least serious of the four levels. Because of strict federal laws, any event out of the ordinary is reported to federal, state, and local authorities. The event poses no danger to the public or to plant employees. State and county emer-gency officials are notified in case the situation worsens. No response by county or state agencies or the public is necessary.
• Alert - This level of emergency would be declared if an actual or possible reduction of plant safety has occurred. State and county emergency officials would be notified and kept up to date. State emergency agencies would recommend public action. The purpose of the Alert classification is to ensure that additional emergency response personnel are ready to respond if necessary.
• Site Emergency - At this level, significant problems at the plant have worsened to the point that a radioactive release to the air or water is possible. During a Site Emergency, state and county Emergency Operations Centers would be staffed. Precautionary measures such as the closing of parks and schools might be required. The sirens would likely be sounded, alerting you to listen to the radio for instructions and further important information.
• General Emergency - The most serious of the four levels. This classification means numerous safety systems have failed. These conditions would likely lead to the release or threat of release of radiation. State and county emergency officials would direct protective actions for residents living near the plant. People in the affected areas would be instructed to take shelter indoors or to evacuate.