Working Group on Fuel Safety Margins (WGFSM)
The main mission of this working group was to advance
the understanding and address the safety issues related to fuel safety
The specific mandate was as follows:
- The group reported to the Committee on the Safety of
Nuclear Installations (CSNI), assisted the committee with its work and
carried out a programme of work approved by the CSNI.
- Assessed the technical basis for safety criteria
and their applicability to high burnup (above 50 MWd/kg), including new
fuel designs and materials. The assessment focused on anticipated
transients and postulated accident conditions. Information relevant
to fuel performance under normal operating conditions were considered
only to the extent necessary to assess the safety behaviour.
- Determined the needs and priorities for future research programmes
in the area of fuel safety behaviour, with the aim of understanding
and adequately modelling key phenomena and quantifying safety margins.
- From the safety point of view, reviewe dmethodologies used
for different core assessments as related to complex core configurations.
Cores with different fuel assembly, designs and those with mixed-oxide (MOX) fuel were
considered. Neutronic, thermal-hydraulic and materials aspects were
considered as they related to core safety assessment.
- Provided a forum where safety relevant fuel issues emerging
from operating experience and research work could be addressed and resolved
in an effective manner.
Committee on the Safety
of Nuclear Installations (CSNI) overview
Last reviewed: 13 October 2006.