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CIVIL NUCLEAR
Flamanville 3: complementary justifications on three nozzles of the primary circuit
by Staff Writers
Paris, France (SPX) Mar 24, 2021

File image of the Flamanville NPP complex at Cherbourg, France.

A significant safety event was declared by EDF to the French safety authority on March 3. This event is related to an incomplete consideration of the study referential requirements for the implantation of three nozzles on the main primary circuit at Flamanville 3 EPR reactor.

Framatome Engineering teams, as a support of EDF teams, have launched an instruction aiming at precisely determining the causes of the event. In order to propose an adequate treatment plan, they also initiated the reassessment of the nozzles characteristics in regards to the study referential.

These nozzles allow to connect auxiliary circuits to the components of the primary circuit. They can be integrated to the piping during the manufacturing operations by machining the mass or can be connected by welding.

The concerned nozzles were done in 2011 based on a 2006 design file.


Related Links
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Nuclear Power News - Nuclear Science, Nuclear Technology
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CIVIL NUCLEAR
Nuclear power is important for a decarbonized, resilient energy system
Palo Alto CA (SPX) Mar 17, 2021
Electric Power Research Institute President and CEO Dr. Arshad Mansoor this month stressed the importance of nuclear generation to the resilience of the U.S. electric power system and expressed confidence in the potential for new and emerging nuclear energy technologies to support continued grid decarbonization. In a virtual panel discussion sponsored by the U.S. Nuclear Regulatory Commission (NRC) Office of Nuclear Reactor Regulation, Mansoor pointed to the exceptional performance of ERCOT nuclea ... read more

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