SharePoint
Aide
IRSN, Institut de radioprotection et de sûreté nucléaire

Search our site :

ok

Contact us :

ok
En Fr

Enhancing Nuclear Safety


Research

Publications

Assessment of the risk of sump plugging. Issue on French PWR

Yves Armand, J.M. Mattéi,

NEA/NRC workshop on debris impact on emergency coolant recirculation,

Albuquerque, USA, February 25-27 2004

Rapport IRSN-DSR/13

Summary

This report presents an assessment of the operational characteristics of the filtration function used during the recirculation phase of safety injection system (SI) and containment spray system (SS) in the event of a break of the primary system in the containment for the French pressurized reactors (58 reactors), which have been designed according with the Regulatory Guide 1.82 (revision 1) published in 1985.

In spite of the lessons learned from the BARSEBACK accident occurred in 1992 and the corresponding questioning about the appropriate character of the requirements of this Regulatory Guide, Electricité de France has always proclaimed the compliance of the French plants with revision 1 of the Regulatory Guide 1.82 and has refused to review this position.

Consequently, the "Institut de Radioprotection et de Sûreté Nucléaire" has decided to perform its own assessment. A general overview of the literature has been conducted between October 1999 and November 2000, questioning the capability of the safeguards systems to operate during recirculation phase which resulted in defining an approach methodology and writing technical specifications related to the French design reactors.

After this general overview, the "Institut de Radioprotection et de Sûreté Nucléaire" has decided to perform a detailed study on the risk of sump plugging for the French reactors.

Send Print

More information


Close

Send to a friend

The information you provide in this page are single use only and will not be saved.
* Required fields

Recipient's email:*  

Sign with your name:* 

Type your email address:*   

Add a message :

Do you want to receive a copy of this email?

Send

Cancel

Close

WP_IMPRIMER_TITLE

WP_IMPRIMER_MESSAGE

Back

Ok