Summary Report of the 366th RSK Meeting

Date: 
2003-10-16

At its 366th meeting, the discussions of the RSK concentrated on the following topics:

  • Damages at the control assemblies in boiling water reactors,
  • seismic safety for longer-term interim storage of low and intermediate level wastes,
  • alerting of the civil protection authority by the operators of nuclear installations,
  • draft standards of the Nuclear Safety Standards Commission (KTA), and
  • further development of the nuclear rules and regulations.

Due to damages at control assemblies identified a two Japanese and one American nuclear power plant, the RSK discussed above all, with regard to the applicability of these events to German plants, the damage mechanisms, their significance for the shut-down safety of the reactor and measures for their prevention. The RSK arrived at the conclusion that under consideration of specified boundary conditions no damages are to be expected which might impair the shut-down safety of the reactor. The details are included in a RSK statement (in German).

Following several discussions, the RSK discussed the need for modification regarding the review of the seismic design of storage facilities for the longer-term interim storage of low and intermediate level wastes. It adopted a modification of Section 2.7.1 of its "Safety requirements on the interim storage of low and intermediate level waste in the longer term".

The Commission on Radiological Protection (SSK) and the RSK revised the version of the above-mentioned alerting criteria of 1994. With regard to system design, the update consists of a revision as well as an extension to the low-power and shut-down operation and to the fuel pool. The updated joint recommendation of the SSK and the RSK is available here (in German).

The annual meeting of the Nuclear Safety Standards Commission (KTA) on 11.11.2003 dealt, among others, with the update or amendment of technical standards of the KTA. For this purpose, the RSK, as member of one of the fractions in the KTA, decided on a vote for each of these standard revision projects.

Within the framework of a BMU project on the general revision of the nuclear rules and regulations, the RSK intends to update the RSK guidelines for pressurised water reactors of 1996. First of all, it discussed structurings and procedures.