ASSESSMENT OF EVENTS IN FRANCE Presented by Didier WATTRELOS. INTERNATIONAL CONFERENCE ON OPERATIONNAL EXPERIENCE FEEDBACK COLOGNE 29-31/05/2006. REGULATORY REQUIREMENTS.
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ASSESSMENT OF EVENTS IN FRANCEPresented by Didier WATTRELOS
INTERNATIONAL CONFERENCE ON OPERATIONNAL EXPERIENCE FEEDBACK COLOGNE 29-31/05/2006
Two levels of anomalies have been defined: Safety Significant Events (SSE)and Events of Interest for Safety (EIS)
a SSE is a safety significant event for which an early information is required within 2 days and a report within 2 months.
Theselow level events may affect safety but not in a serious manner. Therefore they need not be the subject of specific report from the operator but they must be collected into the national database, managed by EDF and accessible for both regulatory bodies and IRSN.
The Safety Authority issued a guideline defining criteria and mode of reporting SSE. Criteria characterizing EIS have been defined by the operator
Criteria triggering the reporting of a safety significant event in a NPP
4.EXTERNAL HAZARD :earthquake or plane crash, for example.
5.REAL OR ASSUMED MALEVOLENT ACT
6.FALLBACK OF THE UNIT ACCORDING TO THE OTS OR ACCIDENTAL PROCEDURESfollowing an unforeseen behaviour of the plant .
9.DESIGN, MANUFACTURING, ON-SITE ASSEMBLY ANOMALIES RELATED TO NOT ABOVE MENTIONNED EQUIPMENT that could lead to operation conditions not taken into account nor by design nor by operating procedures
10.ANY OTHER EVENTdeemed sufficiently important by the operating or safety authority (1/3 of incidents).
POINTS TOBE DEVELOPPED IN A SSE REPORT
During these meetings, are selected:
Guideline to analyse an SSEreport
In France, only one organisation operates a large number of identical or similar reactors: this gives an accumulated experience
IRSN reports to the EdF and the RB, every three months, on both EIS and SSE which are potentially generic. It makes it possible to check the points outlined by IRSN and operator OE assessment.
IRSN assesses in a detailed analysis,every three years, the efficiency of the corrective actions proposed by licensee related to the most important incidents. These analyses are presented to the French Advisory Committee of Experts for Reactors.