Daya Bay emphases on nurturing a safety culture to ensure safe operation. Over the years, well-established management system has been put in place including the following:


  • Commitment at all levels (policy, implementation, individual) as per International Atomic Energy Agency’s recommendations
  • Transparency & “No Blame” to support event reporting, analysis, experience feedback & dissemination
  • Safety by leadership




A continual training is required to uphold the high nuclear safety standards. Daya Bay requires about 600 staff for its operation. Albeit 80% staff are graduates, all staff must undergo stringent training on nuclear safety. The staff competence is ensuring through:


  • Using well trained, qualified and licensed personnel to perform tasks and verify activities
  • Continuous training and re-qualification examinations every 4 years
  • Regular refresher training for experience sharing and feedback of key training


In addition, International and local contractors engaged to work on station projects and refuelling overhauls are also subject to stringent training in line with international practice.

This commitment to safety is supported by the professionalism of the management itself and by the independent assurance process at the station.

Keeping Safe Operations


In addition to a safe and reliable design, experienced qualified operators, and efficient work organisation, stringent procedures play a key role of ensuring safety. A “STAR” (Stop; Think; Action; Review) behaviour is promoted for all processes which conforms to national and international protocol and covers:


Planning and controlling work activities


Perform tasks by well trained and licensed personnel


Adopt international operation and maintenance methodology


Standardise feedback process for normal & emergency situations


Uphold documentation in compliance with standards


Regulatory oversight of operations and related incidents

International Exchange


Daya Bay liaises with the international nuclear community on a regular basis. Teams of experts from the International Atomic Energy Agency are invited to visit the power station regularly to review operational safety against international best practice and to share operational experience. Experts from the World Association of Nuclear Operators also visit regularly to conduct reviews, exchanges, workshops and seminars.

Even 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


Emergency Preparedness at Daya Bay Site


Daya Bay has established contingency plan to cater for different levels of emergency, with appropriate level of response.  Emergency response organisation and communication mechanism are in place to facilitate the emergency response and communication in the unlikely event of a nuclear accident.

Besides Daya Bay regularly provides training and holds emergency exercises within the site and jointly with Guangdong authorities:


  • Regular emergency exercises are conducted by individual work teams on regular basis.
  • Comprehensive exercises at the power station operator (2-3 times per year).
  • Emergency exercises for the mainland government departments in collaboration with the operator (once every 5 years as a minimum).



Emergency Planning Zones


The emergency planning zone is the area around a nuclear power station for which measures are drawn up to deal with an emergency. The measures consist of plans for evacuation, sheltering, and the control of drinking water and food. Daya Bay is in line with French practice:


  • 5 kilometre radius for evacuation planning zone, 
  • 10 kilometre radius for sheltering zone, and 
  • 50 kilometre radius for food and drinking water monitoring zone. All of these activities will be directed by the Guangdong provincial government.

Consistent and Prompt Communication


China as a member state of the International Atomic Energy Agency (IAEA) has adopted the International Nuclear and Radiological Event Scale (INES) in reporting Licensing Operational Events (LOEs) identified in all mainland nuclear power stations. This is an internationally recognised standard that help the public, media and the nuclear community to understand the significance of nuclear events.


Public Notification Mechanism


When a non-emergency LOE (INES level 0, 1 or 2 of a non-emergency nature) occurs at the Daya Bay site, Daya Bay Nuclear Power Operations and Management Company (DNMC) will publish the non-emergency LOEs through its website within two working days or 72 hours after an event being confirmed.  HKNIC website will further publish those of Daya Bay within two working days or 72 hours after an event being confirmed.

If an emergency event (generally INES Level 2 or above) is identified, Daya Bay will activate an “Emergency Response Command Centre” which will take lead in on-site emergency response, and report to relevant government authorities, which will in turn, notify the Hong Kong SAR Government and provide relevant information.


The Chinese authorities would also meet their obligation under the International Atomic Energy Agency Convention on Early Notification of a Nuclear Accident and inform the Agency and neighbouring states.



Contingency Planning for Hong Kong


The Hong Kong SAR Government has in place a comprehensive Daya Bay Contingency Plan (DBCP) to deal with the Hong Kong emergency measures in the event of a nuclear emergency in Guangdong province.



The major counter measures in the DBCP:


20 km - Evacuation, sheltering or the use of stable iodine


85 km -Food and water monitored for contamination


Inform Hong Kong Citizens


Monitoring water and food from the mainland


Regular monitoring of ambient gamma radiation levels


Radiological scanning of people entering HK from the mainland


To learn more about the DBCP, please visit here




Emergency Notification and Monitoring


Should an emergency occur, Daya Bay will timely inform the authorities. On making an emergency declaration, the Guangdong emergency response organisation would inform the Hong Kong SAR Government and provide relevant information.

The Hong Kong Observatory continuously monitor the Hong Kong ambient gamma radiation level throughout 12 field stations. In case of any significant increases in the level, a quick assessment with additional mobile measurements would be reported to emergency response center.  


The public would be kept fully informed and advised on any appropriate action through radio, television, and press announcements. The Hong Kong government would take radiation checks on people entering Hong Kong; conduct the evacuation of Ping Chau together with the seas surrounding it in Mirs Bay; as well as providing required assistance to safeguard the community.