IAEA International Atomic Energy Agency

Winter Nuclear Power Engineering Committee Meeting Double Tree by Hilton Dallas, January 29, 2014

IAEA Safety Standards for Electrical and I&C Systems for Nuclear Power Plants

“UPDATE”

Alexander Duchac a.duchac@iaea.org

IAEA

Recent development

• DS 430 Design of Electrical systems for NPPs

• DS 431 Design of I&C Systems for NPPs

• Technical Documents • Accident Monitoring • Design Provisions for SBO • HMI

2

IAEA

DS 430 Current status

• October 2013 – 36th NUSSC meeting

• November 2013 – 4th NSGC meeting

• Editor’s comments

• April 2014 – CSS meeting

• Publication?

3

IAEA

DS 430 MS Comments

0

50

100

150

200

250

300

350

Rejected Accepted

4

• 702 comments received • 18 MS countries • IEC, IEEE, ENIS, ENS

• 295 accepted • 407 rejected

IAEA

DS 430 Comment Resolution

• Rejected • Comments that would “decrease” the level of technical guidance • Comments that try to “balance” technical guidance to comply with

existing plant design / configuration • Comments suggesting “compensatory measures” when specific

recommendation cannot be met • Comments suggesting specific values (e.g. overvoltage transients,

grid stability, etc.) • References to national rules & standards

• NSGC

• Request to add more security aspects

5

IAEA

DS 430 Next step

• Publication office comments

• CSS meeting, April 2014

• Publication?

6

IAEA

DS 431 (I&C) Current status

• February 2013 – CM on non-consensual items

• April 2013 – revise draft re-submitted to NUSSC

• June 2013 – NUSSC meeting, approved form MS comments

• December 2013 – Deadline for MS Comments

• Comment resolution in progress

7

IAEA

DS 431 MS comments

8

020406080

100120140160180

0

20

40

60

80

100

120

First impression Challenge to a fragile consensus New items to be included

Approach A small group established (FR, US, UK) If non consensus – decision on NUSSC

IAEA

DS 431 next steps

• March 2014 – Comment Resolution

• May 2014 – NSGC meeting (security)

• July 2014 – NUSSC meeting

• October 2014 – CSS meeting

9

IAEA

Safety Guide Supporting Docs

• Technical reports (TECDOCS) • Accident Monitoring - completed

• SBO

• HMI

10

IAEA

SBO TECDOC

• Objective • “to provide technical guidance for the design provisions

to deal with SBO events at NPPs”

• Progress • 1st CS meeting in November

• New draft being prepared

• 2nd CS meeting ion March 2014

• Technical Meeting, June 17-20, 2014, IAEA

11

IAEA

HMI TECDOC

• Objectives: • Complement guidance from DS 431

• Address HMI topic in greater details

• Provide technical guidance and good practice

• Joint work between NSNI & NE

• DPP to be prepared

• 1st CS meeting – 3rd quarter

12

IAEA

Miscellaneous

• IAEA Workshop on Commissioning of Digital I&C

• August 26-30, 2013

• Haiyang site

• Westinghouse AP-1000

• 22 participants

• 3 lecturers (1 Westinghouse)

13

IAEA

China Workshop AP 1000 I&C, 8/2013

14

IAEA

China Workshop AP 1000 I&C, 8/2013

15

IAEA

…and when completed

16

IAEA

AP 1000 in China, Haiyang Site, 8/2013

17

IAEA

AP 1000 in China, Haiyang Site, 8/2013

18

IAEA

AP 1000 in China, Haiyang Site, 8/2013

19