ISO 4917-6:2024

Design of nuclear power plants against seismic events — Part 6: Post-seismic measures

This document applies to nuclear power plants with water cooled reactors. This document does not apply to earthquakes stronger than the design basis earthquake. This document specifies guidance on the actions to be taken in preparation for and following an earthquake at a nuclear power plant. This document is intended to be used as a guideline for decision making regarding continued operation, shutdown and restart of the nuclear power plant after an earthquake. It can also be used to assist operating organizations in the preparation and implementation of an overall pre- and post-earthquake action programme for dealing with situations in accordance with the level of seismic ground motion experienced at the site, and the seismic design level of the plant.

Conception parasismique des installations nucléaires — Partie 6: Dispositions et actions post-sismiques

General Information

• Status: Published
• Publication Date: 26-Feb-2024
• ICS: 27.120.20 - Nuclear power plants. Safety
• ICS: 91.120.25 - Seismic and vibration protection
• Technical Committee: ISO/TC 85/SC 6 - Reactor technology
• Drafting Committee: ISO/TC 85/SC 6/WG 3 - Power reactor, siting, design, construction, operation, and decommissioning
• Current Stage: 6060 - International Standard published
• Start Date: 27-Feb-2024
• Due Date: 15-Feb-2024
• Completion Date: 27-Feb-2024

Standards Content (Sample)

International
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

---------------------- Page: 1 ----------------------
ISO 4917-6:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland

© ISO 2024 – All rights reserved
ii

---------------------- Page: 2 ----------------------
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) .
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 4917-6
ISO/TC 85/SC 6
Design of nuclear power plants against
Secretariat: DIN
seismic events —
Voting begins on:
2023-12-01
Part 6:
Voting terminates on:
Post-seismic measures
2024-01-26
Conception parasismique des installations nucléaires —
Partie 6: Dispositions et actions post-sismiques
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 4917-6:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 1 ----------------------
ISO/FDIS 4917-6:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 4917-6
ISO/TC 85/SC 6
Design of nuclear power plants against
Secretariat: DIN
seismic events —
Voting begins on:
Part 6:
Voting terminates on:
Post-seismic measures
Conception parasismique des installations nucléaires —
Partie 6: Dispositions et actions post-sismiques
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 4917-6:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 2 ----------------------
ISO/FDIS 4917-6:2023(E)
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 cause
...

Style Definition
...
Style Definition
...
Style Definition
...
ISO/TC 85/SC 6
Style Definition
...
Date: 2023-10-30
Style Definition
...
Style Definition
...
ISO/FDIS 4917-6:2023(E)
Style Definition
...
Style Definition
ISO/TC 85/SC 6 .
Style Definition
...
Secretariat: DIN
Style Definition
...
Style Definition
...
Date: 2023-xx
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Design of nuclear power plants against seismic events —
Style Definition
...
Style Definition
...
Style Definition
...
Part 6: Style Definition
...
Style Definition
Post-seismic measures .
Style Definition
...
Élément introductif — Élément central — Conception parasismique des installations nucléaires —
Style Definition
...
Style Definition
...
Partie 6: Titre de la partieDispositions et actions post-sismiques
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...

---------------------- Page: 1 ----------------------
COPYRIGHT PROTECTED DOCUMENT
FDIS stage

---------------------- Page: 2 ----------------------
ISO/FDIS 4917-6:2023(E)
Formatted: Font: Bold, English (United Kingdom)
Formatted: Left, Tab stops: Not at 12.25 cm
Formatted: Left: 1.9 cm, Right: 1.9 cm, Gutter: 0 cm,
© ISO 2023
Header distance from edge: 1.27 cm
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this
Formatted: Adjust space between Latin and Asian text,
publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, Adjust space between Asian text and numbers
including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can
be requested from either ISO at the address below or ISO’s member body in the country of the requester.
ISO copyright office
Formatted: zzCopyright address, Indent: First line: 0 cm,
Adjust space between Latin and Asian text, Adjust space
CP 401 • Ch. de Blandonnet 8 • CP 401
between Asian text and numbers
CH-1214 Vernier, Geneva, Switzerland
Tel.Phone: + 41 22 749 01 11
Formatted: French (Switzerland)
Fax + 41 22 749 09 47
E-mail: [e-mail]
Formatted: French (Switzerland)
Formatted: zzCopyright address, Indent: First line: 0 cm,
www.iso.org
Adjust space between Latin and Asian text, Adjust space
between Asian text and numbers
Website: www.iso.org
Published in Switzerland
© ISO 2023 – All rights reserved iii
© ISO 2023 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO/FDIS 4917-6:2023(E)
Formatted: Font: Bold, English (United Kingdom)
Formatted: Tab stops: Not at 10 cm
Formatted: Adjust space between Latin and Asian text,
Contents Page
Adjust space between Asian text and numbers, Tab stops:
Not at 0.71 cm + 17.2 cm
Foreword .vi
Introduction. vii
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 . 3
4.3 Classification of the earthquake .
...