Meeting the ICRP Main Commission Abu Dhabi, 20 th October 2013 Dr. Bernd Lorenz Chairman, ENISS Expert Group on Radiation Protection

ENISS Liaison Organization Implementing ICRP Recommendations: Observations from Practice Continuity & Stability versus Changes Environment Optimization Dose Constraints Summary Contents B. Lorenz, MC Meeting, October

ENISS is an organization of European NPP operators/licensees. E uropean N uclear I nstallations S afety S tandards Initiative B. Lorenz, MC Meeting, October Belgium (Tractebel, Electrabel) Finland (Fortum, TVO) Germany (EON, RWE) Italy (SOGIN/ENEL) Spain (UNESA) The Netherlands (EPZ) France (EdF, AREVA NC) Sweden (EON-Se, Vattenfall AB) Switzerland (swissnuclear) Czech Republic (CEZ) Hungary ( Paks NPP) Slovakia (Slovenske Elektrarne, JAVYS) Romania (Nuclearelectra) Bulgaria (Kozloduy NPP) United Kingdom (EdF) Slovenia (Krško NPP) Lithuania (Ignalina NPP) ENISS is dedicated to safety. It has a commitment to a continuous improvement of Nuclear Safety. One of our goals is the harmonization of safety requirements.

Radiation Protection Situation within ENISS B. Lorenz, MC Meeting, October ENISS members operate a very large number of Nuclear Power Plants and employ many thousands of occupational exposed workers. The protection of workers as well as the protection of the public and the environment is based on the European BSS which follow the ICRP recommendations. The radiation protection situation is characterized by low occupational doses and no severe accident or incident. Development of radiation protection is always important, but the current system with hundreds of reactor years of experience feedback has proven to be robust. There is no need for a fundamental change of the system.

ENISS is honored to be in the group of acknowledged organizations. Implementation is our field of competence. Work in Committee 4 is therefore of utmost interest for us. ENISS is keen to share its experience and participate in working-level engagements. “Tolerability of Risk” and the “Philosophy of Radiation Protection” could be areas of cooperation and fields of closer engagement. Liaison Organization B. Lorenz, MC Meeting, October

ICRP is scientifically oriented. The operators have to follow the law and regulations. Recommendations to become reality need to be transformed into a regulation. Workers on the spot have to be guided so that they understand how to do the right things. It is not the managing director who gets the exposure. Of course, the management will determine the direction, but this will be easier with recommendations having easy language, concepts that are easy to understand and are transparent. Implementing ICRP Recommendations B. Lorenz, MC Meeting, October

Do you remember Lars-Erik Holm? It was his message “continuity and stability” when he presented ICRP 103. But the reality is somewhat different. A lot of time is invested to identify in which exposure situation we are. New terminology provides for at least some confusion. “Critical Group” is now the “Representative Person”, but is that really the same? Dose Constraints have been defined as the center of optimization. ALARA was the driving force until now. The tissue reaction report is proposing a new limit for the lens of the eye: People are now asking if they were at high risk before. Assessments have to be started to clear up the situation. Changes versus Continuity and Stability B. Lorenz, MC Meeting, October

For decades the concept has been that when man is protected then the environment with its plants and animals is also sufficiently protected. ICRP has now presented a new concept for “environmental exposure” in parallel to the human protection system. ENISS and other organizations and individuals have commented. ENISS e.g. asked for the need of this new concept, taking into account the very small discharges by its facilities. Further work is needed to clarify the concept and its implementation. Environment is all around B. Lorenz, MC Meeting, October

It was a long way from ICRP 26 via ICRP 60 to ICRP 103. At the time of ICRP 26 we discussed the so called de-minimis-concept. But except for clearance and exemption of radioactive material, the concept is still not established in occupational radiation protection. ALARA in terms of a dose where further reduction is not needed, would help to concentrate on the important things. Optimizing the Optimization B. Lorenz, MC Meeting, October

Since ICRP 60 we try to find out the added value behind dose constraints. How can one say a solution is outside the range of optimization when the optimization process has not started? For each and every source a dose constraint? There are thousands of sources, e.g. Smoke detectors Filling level gauges The repair of a contaminated part Dental X-rays How to find the right dose constraint? B. Lorenz, MC Meeting, October

ENISS is an organization with broad experience in the practical implementation of radiation protection. As Liaison Organization we hope to bring in this experience. For implementing ICRP Recommendations: A balance needs to be found between “Continuity & Stability” and “Change” The environment is already protected. Optimizing optimization calls for a cut-off. To find the right dose constraint, more advice is needed. Summary B. Lorenz, MC Meeting, October