Development Of Innovating Na Leak Detector On Pipes

M. Girard (1) , S. Albaladejo (1) , D. Cambet (1) , S. Armiroli (2) , R. Cotillard (2) , G. Laffont (2) , O. Carra (3) , G. Prele (4)

1 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)
2 DRT (CEA) - Direction de Recherche Technologique (CEA)
3 AREVA
4 EDF - EDF

Within the ASTRID reactor project, CEA, EDF and AREVA NP, have launched a RetD program focused on the low leak rates detection of sodium on pipes. This program is focused on the development of innovating detectors, multilayer-type and Optic Fiber, involving tests in the FUTUNa sodium loop. This loop is designed to produce very accurate sodium leak rates within a range around 1cm$^3$/min, the tests being performed at different temperature (up to 550DC) on large-diameter pipe mock-ups (D 800 mm) at ambient atmosphere. This paper presents the first series of tests carried out with various materials of the first and second layer of the detector. The results are compared and discussed as well as the observations made after removing the mock-ups. The most interesting result of the overall tests is a detection time less than 2 hours for the two types of detectors.

Keywords: In-service inspection; Na leakage detection; Multilayer detector; Optical Fiber Sensor

Domains: Nuclear Experiment [nucl-ex]; Nuclear Theory [nucl-th]

M. Girard, S. Albaladejo, D. Cambet, S. Armiroli, R. Cotillard, et al.. Development Of Innovating Na Leak Detector On Pipes. International Conference on Fast Reactors and Related Fuel Cycles Next Generation Nuclear Systems for Sustainable Development FR17, Jun 2017, Yekaterinburg, Russia. ⟨cea-02434543⟩