Abstracts ASN Report 2019

łĶĶĴņļłŁĴĿĿŌ ļŁ ŇĻĸ ĻĸĴķ łĹĹļĶĸ ķĸŃĴŅŇŀĸŁŇņ ĴŁķ ĸŁĺļŁĸĸŅļŁĺ centres), and on the occasion of the review of files concerning occupational radiation protection (significant events, design, ŀĴļŁŇĸŁĴŁĶĸ łŅ ŀłķļĹļĶĴŇļłŁ ĹļĿĸņё ķłĶňŀĸŁŇņ ļŀŃĿĸŀĸŁŇļŁĺ the regulations, etc.) with the support of IRSN as applicable. ĸŅļłķļĶ ŀĸĸŇļŁĺņ ĴŅĸ ĻĸĿķ ŊļŇĻ Ĵņ ŃĴŅŇ łĹ ŇĻĸ ŇĸĶĻŁļĶĴĿ dialogue with the licensee. They enable ASN to check the progress of technical or organisational projects being run to improve radiation protection. • ³ǣǕȇǣǔǣƬƏȇɎ ƬȒȇɎƏȅǣȇƏɎǣȒȇ ƺɮƺȇɎɀ The number of reported significant contamination events ĶłŁĶĸŅŁļŁĺ ŊłŅľĸŅņ ļŁ ŇĻĸ ņ łŃĸŅĴŇĸķ ĵŌ ļņ ňŃ łʼnĸŅ ӅӃӄӋѓ ņĸʼnĸŁ ĸʼnĸŁŇņ ŊĸŅĸ ŅĸŃłŅŇĸķ ļŁ ӅӃӄӌё Ĵņ ĶłŀŃĴŅĸķ ŊļŇĻ ŇŊł ĸʼnĸŁŇņ ļŁ ӅӃӄӋє Ļĸņĸ ĸʼnĸŁŇņё ŊĻļĶĻ Ŀĸķ Ňł ĸŋŃłņňŅĸ ĺŅĸĴŇĸŅ ŇĻĴŁ one quarter the annual regulation limit per square centimetre of ņľļŁё ŊĸŅĸ ŅĴŇĸķ ĿĸʼnĸĿ ӄׇłŁ ŇĻĸ ņĶĴĿĸє Ļĸ ŃŅłĶĸķňŅĸ ĴķłŃŇĸķ ĵŌ ё ŊĻļĶĻ ĶłŁņļņŇņ ļŁ ŅĸŀłʼnļŁĺ ŇĻĸ ĶłŁŇĴŀļŁĴŇļŁĺ ŃĴŅŇļĶĿĸņ with a wipe when they are detected in the hot change room was implemented in most of the above-mentioned cases and helped reduce the time the workers were exposed. Generally speaking, ASN observes progress in the care given to the contaminated workers, which was the subject of corrective action requests ļŁ ӅӃӄӉё ӅӃӄӊׇĴŁķ ӅӃӄӋє ĻĸŅĸ ĴŅĸ ĻłŊĸʼnĸŅ ņŇļĿĿ ķĸʼnļĴŇļłŁņё ļŁ particular concerning the care given to workers in areas with a contamination risk other than the nuclear islands. א ِ ו ِ א ɀɀƺɀɀȅƺȇɎ Ȓǔ ȵƺȸɀȒȇȇƺǼ ȸƏƳǣƏɎǣȒȇ ȵȸȒɎƺƬɎǣȒȇ Ļĸ ĶłĿĿĸĶŇļʼnĸ ķłņĸ łŁ ĴĿĿ ŇĻĸ ŅĸĴĶŇłŅņ ļŁĶŅĸĴņĸķ ļŁ ӅӃӄӌׇĵŌ ĶłŀŃĴŅļņłŁ ŊļŇĻ ӅӃӄӋׇҎ ŅĴŃĻ ӄҏё ŊĻļĿĸ ŇĻĸ ĴʼnĸŅĴĺĸ ķłņĸ ŅĸĶĸļʼnĸķ by the workers for one hour of work in the controlled area remained on the whole stable (Graph 2). The doses received by the ŊłŅľĸŅņ ĴŅĸ ĵŅłľĸŁ ķłŊŁ Ĵņ ļĿĿňņŇŅĴŇĸķ ĵĸĿłŊ ļŁ ŅĴŃĻņ ӆׇĴŁķ Ӈє ŅĴŃĻ ӆׇņĻłŊņ ŇĻĸ ĵŅĸĴľķłŊŁ łĹ ŇĻĸ ŊłŅľĸŅņ ĴĶĶłŅķļŁĺ Ňł ŊĻłĿĸ body external dosimetry. It can be seen that the dosimetry for 76% łĹ ŇĻĸ ĸŋŃłņĸķ ŊłŅľĸŅņ ļņ Ŀĸņņ ŇĻĴŁ ӄׇŀ ʼn ҎŀļĿĿļņļĸʼnĸŅŇҏ ĹłŅ ŇĻĸ ŌĸĴŅ ӅӃӄӌё ŊĻļĶĻ ĶłŅŅĸņŃłŁķņ Ňł ŇĻĸ ĴŁŁňĴĿ ŅĸĺňĿĴŇļłŁ ĿļŀļŇ ĹłŅ the public. The annual regulation limit for whole body external ķłņļŀĸŇŅŌ ҎӅӃׇŀ ʼnҏ ŊĴņ ĸŋĶĸĸķĸķ łŁ Łł łĶĶĴņļłŁ ļŁ ӅӃӄӌє ŅĴŃĻ ӄׇņĻłŊņ ŇĻĸ ŇŅĸŁķ ļŁ ŇĻĸ ĶłĿĿĸĶŇļʼnĸ ķłņĸ ŅĸĶĸļʼnĸķ ĵŌ NPP workers over the past ten years. This graph shows an ļŁĶŅĸĴņĸ ļŁ ŇĻĸ ĶłĿĿĸĶŇļʼnĸ ķłņĸ ŅĸĶĸļʼnĸķ ļŁ ӅӃӄӌׇĵŌ ĶłŀŃĴŅļņłŁ ŊļŇĻׇӅӃӄӋׇĴŁķׇӅӃӄӊє Ļĸ ĴʼnĸŅĴĺĸ ĶłĿĿĸĶŇļʼnĸ ķłņĸ ŅĸĶĸļʼnĸķ ļŁ ӅӃӄӌׇļņ ĴŇ Ĵ ĿĸʼnĸĿ ĶłŀŃĴŅĴĵĿĸ Ňł ŇĻĴŇ ŅĸĶłŅķĸķ ĵĸŇŊĸĸŁ ӅӃӄӆׇĴŁķ ӅӃӄӉє ŅĴŃĻ ӇׇņĻłŊņ ŇĻĸ ŇŅĸŁķ ļŁ ŊĻłĿĸ ĵłķŌ ĴʼnĸŅĴĺĸ ļŁķļʼnļķňĴĿ dosimetry according to the categories of workers in the NPPs. Ļĸ ŀłņŇ ĸŋŃłņĸķ ŊłŅľĸŅ ĶĴŇĸĺłŅļĸņ ļŁ ӅӃӄӌׇĴŅĸ ŃĸŅņłŁŁĸĿ ļŁ charge of heat insulation, welding, monitoring and mechanical work. The doses recorded by the most exposed workers are up ĵŌ ĶłŀŃĴŅļņłŁ ŊļŇĻ ӅӃӄӋє During its inspections, ASN found that worker radiation ŃŅłŇĸĶŇļłŁ ŊļŇĻļŁ ŇĻĸ ņ ĻĴķ ŅĸĺŅĸņņĸķ ļŁ ӅӃӄӌё ŁłŇĴĵĿŌ ŊļŇĻ respect to the application of radiation protection rules and the consideration of worker protection when planning the activities. Shortcomings are in particular observed in the implementation of processes for access to and demarcation of operation areas and prohibited areas, in which the dose equivalent rate is liable to be ĻļĺĻĸŅ ŇĻĴŁ ӄӃӃׇŀ ʼnѼĻ ҎŀļĿĿļņļĸʼnĸŅŇņ ŃĸŅ ĻłňŅҏё ŁłŇĴĵĿŌ ŅĸĹĿĸĶŇļŁĺ an inadequate perception of the radiological risks. During the inspections carried out during reactor maintenance outages, the ASN inspectors repeatedly submit requests regarding the availability of radiation protection equipment, and regarding risk and dose optimisation assessments. They nevertheless underline that progress has been made in the implementation of worksite confinement means. The drop in the standard of radiation protection is particularly ĹĿĴĺŅĴŁŇ ļŁ ĶĸŅŇĴļŁ ņє łŅ ŇĻĸņĸ ņё ĻĴņ ŅĸļŁĹłŅĶĸķ ļŇņ ŀłŁļŇłŅļŁĺє Ň łĵņĸŅʼnĸņ ŇĻĴŇ ŇĻĸ ņŇĸŃņ ŇĴľĸŁ ĵŌ ĴŅĸ ŁłŇ fully bearing fruit, notably with regard to the correction of organisational deviations. ASN will be remaining vigilant on these issues during the course of 2020. א ِ ז nƏƫȒɖȸ nƏɯ ǣȇ Ɏǝƺ z¨¨ɀ א ِ ז ِ׏…ɮƺȸɀǣǕǝɎ Ȓǔ nƏƫȒɖȸ nƏɯ ǣȇ Ɏǝƺ z¨¨ɀ ĶĴŅŅļĸņ łňŇ ĿĴĵłňŅ ļŁņŃĸĶŇłŅĴŇĸ ķňŇļĸņ ļŁ ŇĻĸ ӄӌׇ ņё ŇĻĸ eight reactors undergoing decommissioning and the EPR under ĶłŁņŇŅňĶŇļłŁ ĴŇ ĿĴŀĴŁʼnļĿĿĸє Ļĸ ŊłŅľĹłŅĶĸ ļŁ ĴŁ ʼnĴŅļĸņ ĵĸŇŊĸĸŁ ӋӃӃׇĴŁķ ӅёӃӃӃׇŃĸłŃĿĸє Ļĸ ŇłŇĴĿ ŁňŀĵĸŅ łĹ ņŇĴĹĹ ĴņņļĺŁĸķ Ňł ĴĿĿ ŇĻĸ ŁňĶĿĸĴŅ ņļŇĸņ ļņ ĴĵłňŇ ӅӇёӃӃӃׇĹłŅ ŇĻĸ ĸŀŃĿłŌĸĸņ łĹ ё ĴŁķ ӅӆёӃӃӃׇĹłŅ ŇĻĸ ĸŀŃĿłŌĸĸņ łĹ ŇĻĸ ņňĵĶłŁŇŅĴĶŇłŅņё ŊĻł ŀłŅĸ specifically take part in maintenance during reactor outages. The role of the labour inspectorate is to ensure that the Labour łķĸ Ĵņ Ĵ ŊĻłĿĸ ļņ ĴŃŃĿļĸķ ĵŌ ŇĻĸ ĸŀŃĿłŌĸŅņё ŊĻĸŇĻĸŅ łŅ its contractors. ÁǣǕǝɎƺȇƺƳ ƺȇɮǣȸȒȇȅƺȇɎƏǼ ǣȇɀȵƺƬɎǣȒȇɀ The “tightened” inspection campaigns carried out by ASN are a particular inspection format with a broader scope of inspection. They allow an overall assessment on a given topic for an entire site and a geographical area. Since 2015, ASN has carried out this type of inspection once per year on the topic of environmental protection. After the Rhone Valley sites and the NPPs at Blayais, Golfech and Civaux, the sites of the Normandy region (Paluel, Penly and Flamanville) underwent tightened inspections in May ƏȇƳ ژ hɖȇƺ א ׎׏ ח ِ Using a similar inspection programme of a day and a half, a team of ASN inspectors, accompanied by IRSN experts, examined the environmental protection organisation of each of these NPPs in turn. The large size of the team deployed (up to 16 ASN inspectors and three IRSN experts per site) enabled the control of discharges into the environment, the management of non-radiological risks and the pollution prevention measures to be inspected. On each of the sites, the duration of the inspection made it easier to hold large-scale exercises and simulations. Thus, at the request of ASN, each site tested its pollution prevention organisation by means of an exercise simulating a spillage of dangerous substances reaching the rainwater collection network. The inspectors observed that the EDF teams on the sites had taken account of certain points raised by ASN in previous years and that the personnel demonstrated Ə ژ ƬǼƺƏȸ Ƴƺɀǣȸƺ ɎȒ ƏƳƳȸƺɀɀ ƺȇɮǣȸȒȇȅƺȇɎƏǼ ǣɀɀɖƺɀِ RȒɯƺɮƺȸً documentary and organisational shortcomings observed with regard to managing the prevention of pollution led ASN to ask EDF for a national action plan on this subject. 300 ASN Report on the state of nuclear safety and radiation protection in France in 2019 ׏׎ ٲ THE EDF NUCLEAR POWER PLANTS