ASN Report 2018

Events involving safety in NPPs, notified in 2018 24 Inadvertent start-up of a protection or safeguard system 1 Occurrence of an internal or external natural hazard (flood, fire, etc.) 29 Design, manufacturing or assembly anomaly 38 Transition to shutdown state in accordance with STE or accident procedures 36 Automatic reactor trip 218 Other significant events which could affect safety TOTAL 686 2 Event or anomaly specific to the primary or secondary system 338 Deviation from Operational Technical Specifications (STE) or event which could lead to a deviation Graph 5 Events involving safety in BNIs other than NPPs notified in 2018 28 Other significant events which could affect safety 1 Event affecting a safety function and potentially constituting an accident precursor 14 Inadvertent start-up of a protection or safeguard system 6 Internal or external hazard affecting the availability of important equipment 14 Fault, deterioration or failure which affected a safety function 3 Event which led to or which could have led to the dispersal of hazardous materials TOTAL 178 37 Event actually or potentially affecting the containment of hazardous materials 75 Event which led to safety limit(s) being exceeded Graph 6 Significant environment-related events in BNIs notified in 2018 27 Confirmation that a discharge or concentration limit has been exceeded 3 Non-compliance with the site or facility waste study 9 Bypassing of normal discharge channels, with a significant impact due to chemical substances 23 Non-compliance with the Order of 31st December 1999 5 Discovery of a site significantly polluted by chemical or radioactive materials TOTAL 135 7 Non-compliance with an operational requirement which could lead to a significant impact 30 Other significant events which could affect the environment 31 Bypassing of normal discharge channels, with a significant impact due to radioactive substances Graph 7 142  ASN report on the state of nuclear safety and radiation protection in France in 2018 03 – REGULATION OF NUCLEAR ACTIVITIES AND EXPOSURE TO IONISING RADIATION