The RSK consulted on generic knowledge from occurrences at the Philippsburg nuclear power plant and measures against a loss of know how and motivation in the plants. The Commission on Radiological Protection (SSK) informed the RSK about a draft on the prediction and assessment of source terms with regard to a potential or actual release into the atmosphere during nuclear power plant accidents.

At the meeting, the newly appointed RSK members were welcomed. The RSK proposed to the Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety (BMUB) to appoint Mr. Rudolf Wieland as Chairman and Mr. Richard Donderer as Vice Chairman. The RSK was informed by the BMUB on the revision of the WENRA “Safety Reference Levels for existing reactors” and by GRS about the current state of affairs as regards the accidents at the Fukushima Daiichi nuclear power plant. The consultations on the RSK statement “Section-wide unavailabilities due to electrical coupling between redundant sections of the emergency power system of German nuclear power plants” have started.

At its 463rd meeting, the VGB PowerTech e.V. reported to the RSK on the experiences in implementing the RSK recommendation on the robustness of the German nuclear power plants (this recommendation had been prepared by the RSK in connection with the incidents at the Japanese nuclear power plant Fukushima). The RSK visited the Isar 2 nuclear power plant.

At its 462nd meeting, the RSK adopted the statement on the "Assessment of the coverage of extreme weather conditions by the existing design" and convened the ad hoc working group SAMG (Severe Accident Management Guidelines). The ad hoc working group was requested to prepare a statement. The voting for the 68th meeting of the Nuclear Safety Standards Commission (KTA) was determined.

Within the framework of the closed meeting, the RSK discussed the future tasks of RSK, the structural changes required for it and the topics to be discussed in the committees. The results of consultations of the Committee on REACTOR OPERATION (RB) so far on know-how and maintenance of motivation of operators, expert organisations and supervisory authorities were presented to the RSK. The Committee RB will document them in a report.

Following extensive consultations, the RSK adopted the statement "RSK’s understanding of safety philosophy" at its 460th meeting.

The statement "Specification of requirements related to the 10-hours self-sufficiency in the event of external man-made hazards (man-made hazard conditions)” (in German) was adopted. The RSK was informed about an incident in the Swedish Forsmark 3 nuclear power plant on 30.05.2013 "manual start of the emergency diesel generators after loss of off-site power supply" and in the Swiss Gösgen nuclear power plant on 30.06.2012 "reactor scram due to false triggering of reactor protection signals" and about the current state regarding fuel assembly deformations in the Philippsburg nuclear power plant, Unit 2. The consultations on the understanding of the safety philosophy were continued.

At the meeting, the RSK was informed about the results of the ENSREG workshop on the national action plans from 22 to 26 April 2013. The consultations on the understanding of the safety philosophy were continued.

The RSK adopted the statement on "PWR neutron flux fluctuations" and "Minimum value of 0.1g (approx. 1.0 m/s2) for the maximum horizontal ground acceleration in an earthquake" (in German).
A report by the RSK Committee on Plant and Systems Engineering on the "Assessment of the adequate consideration of extreme weather conditions by the existing design" was discussed; an update of the report is to be discussed at the next meeting, when the further procedure will be specified.

The RSK discussed the statement "Minimum value of 0.1g (approx. 1.0 m/s²) for the maximum horizontal ground acceleration in an earthquake", its adoption is planned to be by way of circulation. The discussions regarding the understanding of the safety philosophy were continued.