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.





Actions Taken in the Belgian Nuclear Power Plants for the Resolution of the GSI-191

Nuclear Energy Agency

The emergency core cooling system (ECCS) of a nuclear power plant supplies cooling water to the reactor vessel in the case of a loss of coolant accident (LOCA). A LOCA generates debris by the force of coolant impinging upon pipe insulation and entraining a wide variety of particulate matter from the reactor building surfaces that the coolant flows over. During the recirculation phase following a LOCA, if a sufficient quantity of debris accumulates on the sump screens, the ECCS pumps’ suction flow path can be reduced significantly, causing a drop in the available NPSH and, eventually, a loss of pump flow. If the ECCS flow is lost for a sufficiently long time, the core may become uncovered and overheat, causing severe damage to the fuel. Since the Barsebäck strainer event (July 1992), studies and experiments are being undertaken all ...


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