Debris Impact on Emergency Coolant Recirculation

Workshop Proceedings, Albuquerque NM, USA, 25-27 February 2004

image of Debris Impact on Emergency Coolant Recirculation

This conference proceedings examines the most recent research and developments related to the impact of debris on emergency coolant recirculation.  Held in Albuquerque, New Mexico in February 2004, this proceedings had sessions on safety assessment and regulatory requirements, experimental work, analytical work, and industry solutions.  The proceedings present the papers presented as well as a summary of discussions that took place.





Experimental Work

Nuclear Energy Agency

Extensive investigation and tests on this issue were performed in Germany, and the conclusion was that no major backfitting was necessary on their Siemens PWRs. This was largely due to the use of strong cassette type insulation only on the primary system; special efforts to ensure break preclusion for the main coolant lines thus allowing application of reduced break sizes in their debris generation calculations; the fact that no containment spray systems exist in these plants; high water levels in the sump allowing increased sedimentation; and the enforcement of containment cleanliness after refuelling. The general sense of the session was that because of the different containment designs and ...


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