principe des barrières multiples

CONT: [...] la CCEA utilise le principe des barrières multiples qui prévoit au moins cinq obstacles pour empêcher la fuite des matières radioactives les plus dangereuses dans l'environnement. Des systèmes de sûreté sont installés pour assurer l'intégrité de ces barrières.

OBS: The basic defence-in-depth philosophy is to maintain at least five barriers to the escape of the most dangerous radioactive materials into the environment ... Safety systems are installed to help keep these barriers intact. ... Defence-in-depth calls for several levels of protective and safety systems, and has been vigorously applied in the design and construction of nuclear reactors.