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Standard
ISO 4917-6
First edition
Design of nuclear power plants
2024-02
against seismic events —
Part 6:
Post-seismic measures
Conception parasismique des installations nucléaires —
Partie 6: Dispositions et actions post-sismiques
Reference number
ISO 4917-6:2024(en) © ISO 2024
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ISO 4917-6:2024(en)
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Published in Switzerland
© ISO 2024 – All rights reserved
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ISO 4917-6:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Procedure . 2
4.1 General requirements .2
4.2 Verification of the earthquake . .2
4.3 Classification of the earthquake .3
4.4 Initial measures .3
4.4.1 Plant check-up from the control room and plant walk-down inspection
(Figure 2, chart item 3) .3
4.4.2 Deviations caused by the earthquake (Figure 2, chart item 4) .4
4.4.3 Specified normal operation condition in accordance with the operating manual
(Figure 2, chart item 5) .4
4.5 In-depth measures .4
4.5.1 General .4
4.5.2 Special/Seismic inspections and analyses (Figure 2, chart item 6) .4
4.5.3 Specified normal operation condition and permissible loads (Figure 2, chart
item 7) .5
4.5.4 Shutdown inspection (Figure 2, chart item 9) .
...