The RSK discussed the draft statement of its Committee on PRESSURE-RETAINING COMPONENTS AND MATERIALS (DKW) on tests on ferritic-austenitic dissimilar welds (see 389th RSK meeting).

The RSK ended the discussion about the classification of "VO events" according to the safety levels of the defence-in-depth concept and concept for the redefinition of precautions (Vorsorgemaßnahmen - VM) with a statement (in German) in which, in particular, emphasis is laid on the necessity of analysing quality and effectiveness (performance, reliability etc.) of precautions.

The RSK and the BMU continued their discussion on the revision of the nuclear rules and regulations and the way of assessment of the rules and regulations by the RSK. The RSK working groups presented information about the state of consultations on the draft modules of the rules and regulations.

The RSK discussed and adopted following statements:
Control of loss-of-coolants accidents at PWRs under consideration of dead volumes in the containment - safety management aspects (in German),
Current approach for non-destructive tests performed within the framework of recurrent tests on ferritic-austenitic dissimilar welds (in German), and
Proposal for requirements on decommissioning in the nuclear rules and regulations (in German).

In addition to a series of internal topics, such as the preparation of the Quadripartite Meeting in October 2006 in Washington (“International Cooperation”), the RSK dealt with the course of discussions for two orders of the BMU.

In light of recent events at the Swedish plant Forsmark 1, RSK had a first discussion. RSK prepared issues on the basis of a GRS report and data and information provided by the BMU which were to be dealt with by the RSK Committee on ELECTRIC INSTALLATIONS with the aim to analyse all disturbing factors and their impacts on the auxiliary or emergency power systems that go beyond issues related to the circuit design.

The RSK discussed and approved the statement on the "Synthesis Report issued by the Federal Office for Radiation Protection (BfS) ‘Conceptual and safety-related issues regarding the disposal of radioactive wastes – A comparison of different host rocks" (in German) prepared by the RSK Committee on FUEL SUPPLY AND WASTE MANAGEMENT.

The RSK discussed and passed its vote on the resolution documents on KTA standards to be dealt at the 60th meeting of the Nuclear Safety Standards Commission (KTA).

For the statement on the draft of new revised nuclear rules and regulations, requested by the BMU, the RSK completed its review criteria to be applied by the working groups established in their assessment of the different draft modules (392nd RSK meeting).

At this meeting, the prevailing topic of discussions was the further proceeding regarding the project on update of the nuclear rules and regulations of the Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) after its follow-up (module Version B) on the basis of the workshop series. The RSK agreed on a proceeding with five working groups which primarily review different module topics by means of an assessment catalogue. Their results shall be compiled for the RSK.

At the 385th meeting on 20./21.07.2005, the RSK adopted the recommendation "Requirements for safety analyses on loss-of-coolant accidents".

At the 384th meeting on 07.07.2005, the RSK discussed and adopted the statements prepared by its Committee on
PLANT- AND SYSTEMS-ENGINEERING (AST) - "Switch-off of the main coolant pumps during ATWS events at nuclear power plants with pressurised water reactor" (in German) which includes some new stipulations compared to the statement "ATWS events" (of the RSK of 03.05.2001, 340th meeting),