00000nam 2200000za 4500 9.819604 CaOODSP 20221107143013 cr ||||||||||| 160616s2015 oncad|||o f000 0 eng d CaOODSP eng n-cn--- CC172-135/2015E-PDF Severe accident progression without operator action [electronic resource]. Ottawa : Canadian Nuclear Safety Commission, 2015. 14 p. : col. ill. "October 2015." "Facility: Darlington. Classification: Unclassified". Issued also in French under title: Progression d'un accident grave sans intervention de l'opérateur. "After the Fukushima Daiichi accident in 2011, one of the many actions committed to by the Canadian Nuclear Safety Commission (CNSC) in its Integrated Action Plan was an assessment and video representation for the public of how a full station blackout could progress in a CANDU reactor in Canada. This video was posted online in January 2013. The CNSC has now followed up with this technical paper, which assesses the timing of a hypothetical blackout, using the Darlington Nuclear Generating Station for illustration.For the assessment, it was necessary to make the extremely unrealistic assumption that operators take absolutely no action after a full station blackout. The assessment is not used to determine the effects of releases, but rather to assess the potential time and magnitude of releases to determine what operator action can be taken to prevent releases. The assessment identifies the multiple points when operator action becomes critical to stop the progression of an accident. Also, the assessment shows there is adequate time for operator action."--Executive summary, p. 2. gccst Nuclear energy gccst Nuclear facilities gccst Accidents Canadian Nuclear Safety Commission. Progression d'un accident grave sans intervention de l'opérateur (CaOODSP)9.819606 PDF 307 KB https://publications.gc.ca/collections/collection_2016/ccsn-cnsc/CC172-135-2015-eng.pdf