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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.

 

 

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The Sump Screen Clogging Issue in Belgium from the Standpoint of the Authorized Inspection Organisation AIO

Nuclear Energy Agency

All Belgian NPPs are PWRs. These PWRs have different containment designs and different sump designs. The four most recent units (Doel 3 &4 and Tihange 2 &3) took RG 1.82 rev. 0 into account for the recirculation sump design. Several improvements were made in the framework of the first Periodic Safety Review to the oldest units (Doel 1 & 2 and Tihange 1) such as enlargement of the sumps strainer in 1985, taking into account the requirements of RG 1.82 rev. 0. The problem of recirculation sump screen clogging due to the accumulation of insulation debris after an accident was also identified as a safety issue in the first Periodic Safety Review for Doel 3 and Tihange 2 and the second Periodic Safety Review for Doel 1&2 and Tihange 1, that started in the nineties. One of the purposes of the Periodic Safety Review being the justification of the safety level ...

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