Montreal Nuclear Services
Develop, test and document the CATHENA end shield cooling system thermalhydraulics model for Gentilly-2, and perform deterministic safety analyses of end shield cooling system events.
end shield cooling events were not part of Gentilly-2 Safety Report
prior to refurbishment. A CATHENA end shield cooling system model
was developed as part of the refurbishment project.
The work consisted of developing, testing and documenting the CATHENA end shield cooling system thermalhydraulics model. The model was compared against plant data at 100%FP and during power maneuvers.
CATHENA model was used to perform deterministic safety analysis of the
end shield cooling system (loss of flow, loss of heat sink, loss of
inventory and heat exchanger tube rupture). The model was also used to
identify design modifications in the end shield cooling level
The work was contracted by Hydro-Québec to AECL (Atomic Energy of Canada Ltd). Gilles Sabourin assumed the technical supervision.
NOTE: This work was performed / lead by MNS personnel during their previous employment
CATHENA thermalhydraulic model of the end shield cooling system
Validation of the CATHENA end shield cooling system model
Two Methodology Reports and two Analysis Reports