The RSK specified the tasks for the ad hoc working group ERL (use of computer-based I&C). It was informed on the background and objectives of the statements on "Steam generator tube degradation – cause and identification" and on "Leakages from steam generator tubes to be postulated; multiple tube rupture/leak opening of wall thickness-reduced steam generator tubes" by the chairman of the RSK Committee on PRESSURE-RETAINING COMPONENTS AND MATERIALS (DKW).

The RSK adopted the statement (in German) on the strength theories within the scope of application of the KTA safety standards in connection with the re-evaluation of components and systems; here: on the issue of the optional applicability of the strength theories according to von Mises (maximum distortion energy theory (Gestaltänderungsenergiehypothese - GEH) and Tresca (maximum shear stress theory -  Schubspannungshypothese, SH) in the KTA standards for pipes prepared by the RSK Committee on PRESSURE-RETAINING COMPONENTS AND MATERIALS (DKW).

The RSK adopted the recommendation “Guideline for the performance of integral event analyses” (in German), and the statement “Proceeding for the modification of testing instructions at short notice for in-service inspections" (in German) prepared by the RSK Committee REACTOR OPERATION (RB).

At the end of January 2009, the BMU announced some reappointments to the RSK and Dr.-Ing. E. Fischer (E.ON), Dr.-Ing. E. Grauf (SE-Grauf) and Dipl.-Ing. T.-O. Solisch (ESN) have been appointed as new members to the RSK.

The RSK discussed the status of consultations on leak postulates for the demonstration of core cooling in the RSK Committee on PLANT AND SYSTEMS ENGINEERING. It agreed to continue the consultations within the RSK under consideration of a committee paper.

The RSK discussed the requirements related to computer-based safety instrumentation and control for the use in the highest safety category. The discussion was mainly based on the current status of consultations of the RSK Committee on ELECTRIC INSTALLATIONS. It was agreed to continue the consultations on the generic requirements under consideration of the technical implementation.

Based on a request for advice of the BMU on power increase of the Gundremmingen II nuclear power plant, the RSK discussed the further proceeding of consultations within the RSK and its committees.

Based on a request for advice of the BMU on power increase of the Gundremmingen II nuclear power plant, the topics prepared for discussion by the RSK Committees on PLANT- AND SYSTEMS-ENGINEERING, PRESSURE-RETAINING COMPONENTS AND MATERIALS and REACTOR OPERATION were presented. Due to a clarification of regulatory matters announced by the BMU in connection with federal supervision, the RSK agreed to postpone its consultations.

The RSK compiled the comments of its working groups for updating the nuclear codes and submitted them to the Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) with the request to consider them in its update of the draft module.

The RSK discussed and approved the statement on the Licensing procedure for decommissioning and dismantling of the Obrigheim nuclear power plant (in German) prepared by the RSK Committee on FUEL SUPPLY AND WASTE MANAGEMENT (VE).

Following the statement “Loss-of-coolant accidents involving the release of insulation material and other substances in pressurised water reactors - removal of deposits on sump strainers”, adopted at the 406th meeting on 13.03.2008, there was further need for discussion on some requirements in this statement. As a result, the RSK agreed that adjustments in the statement are not necessary.

The RSK continued its consultation on the joint RSK and SSK statement on the GRS report “Safety requirements on the disposal of high-level radioactive waste in deep geological formations".

The RSK had discussion on several technical issues in connection with the update of the nuclear codes which ensued from former discussions in its working groups.

Further, the RSK dealt with special issues arising with regard to the use of digital safety I&C in the highest safety category of nuclear power plants. The RSK Committee on ELECTRICAL INSTALLATIONS (EE) is to prepare a position paper including the main requirements (→404th meeting: Workshop on 18./19.02.2008).

The RSK discussed and adopted the statement "Loss-of-coolant accidents involving the release of insulation material and other substances in pressurised water reactors – removal of deposits on sump strainers" prepared by the RSK Committee on PLANT AND SYSTEMS ENGINEERING (AST).
In the course the discussions of the joint RSK and SSK statement on the GRS report “Safety requirements on the final disposal of high-level radioactive waste in deep geological formations”, the following topics were dealt with in particular