While the risk of a major nuclear incident affecting the public is very low, thorough planning for an emergency situation is a very important aspect of nuclear safety. Daya Bay has adopted the International Atomic Energy Agency’s four-category system for classifying nuclear emergencies.

Daya Bay’s Four-Category System for Classifying Nuclear Emergencies
1. Emergency Standby

The safety level within the power station may be reduced
2. Plant Emergency

Radiological consequences of the emergency are confined to a section of the power station
3. Site Emergency

Radiological consequences of the emergency are confined to the site of the power station
4. Off-site Emergency

Radiological consequences of the emergency extend beyond the site boundary

At Daya Bay, well established contingency plans have been prepared for different levels of emergency, with appropriate level of response. Communication mechanism is also in place to facilitate communication with the general public and relevant government authorities at Guangdong and Hong Kong in the unlikely event of a nuclear accident.

Photo: Daya Bay Nuclear Power Operations & Management Co., Ltd

Emergency Preparedness at Daya Bay Site

To cater for an emergency situation, Daya Bay has established an emergency response organisation, with procedures and equipment in place. In order to well equip all station staff for effective and efficient responses in an emergency situation, Daya Bay regularly provides training and holds emergency exercises within the site and jointly with Guangdong authorities:

Comprehensive exercises at the power station operator (2-3 times per year)
Emergency exercises in collaboration with mainland government departments (once every five years as a minimum)
Regular emergency exercises are also conducted by individual work teams on a more frequent and regular basis