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CZECH REPUBLIC

NATIONAL REPORT

05 / 2015

Ales Karasek

Jiri Pliska

IAEA Technical Working Group on Nuclear Power Plant

Instrumentation and Control

IAEA TWG NPPIC 2015 – CZECH NATIONAL

REPORT

CONTENT

� Introduction

� NPP Dukovany

� NPP Temelin

� Significant I&C Projects and Major Challenges

� NPP Dukovany I&C Projects Recapitulation

� NPP Temelin I&C Projects Recapitulation

� NPP Dukovany I&C Refurbishment of the Plant Support Systems

� NPP Dukovany Plant Information System Modernization (virtualization)

� NPP Dukovany PAMS improvement

� NPP Temelin Power Uprate

� Recommendations

1


REPORT

INTRODUCTION

2

NPP Dukovany

� 4 x 440 MW, VVER 440/213

� In operation from 1985-1988

30th

Anniversary


REPORT

INTRODUCTION

3

NPP Temelin

� 2 x 1000 MW, VVER-320

� In operation from 2002-2003

15th

Anniversary


REPORT

RECENT I&C PROJECTS RECAP - DUKOVANY

� Plant I&C modernization:

� Safety and safety-related systems replaced in 2002-2009 (SPINLINE platform)

� Plant control systems replacement (turbine, primary and secondary systems monitoring and

control) started in 2009 and should be finished in 2016 (ZAT Plant-Suite platform)

� I&C of the plant support systems (e.g. water treatment etc.) to be replaced in 2015-2017

� Power uprate in 2005-2012 (500 MW per unit)

� Post-Fukushima improvements (PAMS upgrade, backup power supply, new ventilator

cooling towers as an ultimate heat sink, alternative means for monitoring of parameters

and communication, seismic monitoring system)

� SCORPIO upgrade (computer based system for on-line surveillance of reactor core)

� Long-term operation:

� PSR 30 (Periodic safety review after 30 years of operation)

� IAEA SALTO mission (The Safety Aspects of Long Term Operation) in 11/2014

� I&C preventive maintenance plans reviewed based on EPRI PMDB

� Operating license renewal process (in 2015 for unit 1)

4

5


REPORT

POST-FUKUSHIMA IMPROVEMENTS


REPORT

RECENT I&C PROJECTS RECAP - TEMELIN

� Power uprate

� 104% of nominal power reached in 2013 by reducing the design margins

� Post-Fukushima improvements

� SBO DG with qualified indication in the MCR/ECR

� Robustness of electrical scheme improvement (additional inverters added)

� Plant I&C modernization

� I&C of the plant support systems

Phase 1 - nearly finished (2015)

fresh water treatment, waste water treatment, non-unit heat exchanger,

technical gases treatment etc.

Phase 2 – public tender is currently in progress (2016-2020)

radwaste treatment, auxiliary gas boiler, decontamination, compressor station,

chemical water treatment, spent fuel storage control etc.

� I&C of the plant control systems

Planned to be done in 2020-2025, currently we are mapping the capability of potential suppliers

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REPORT

SIGNIFICANT I&C PROJECTS - DUKOVANY

� I&C refurbishment of the plant support systems (water chemical treatment and pumping

stations, air-conditioning systems, high and low pressure compressor stations, oxygen

and nitrogen treatment systems, etc.) in 2015-2017:

7

� Sensors replacement

� Process level modernization

(Modicon Quantum, Modicon M340

and SAIA platforms)

� Operator level modernization

(Wonderware Application Server

platform)

� HMI (Magelis screens and operator

PCs)

� Backbone communication based on

double ring of 10GB industrial

Ethernet


REPORT


� Plant information system modernization (non-safety system; plant data visualization and

log-term storage based on MS Windows and Wonderware application SW; 27 data

sources including unit information systems; 150k parameters; 70 servers and 50 user

PCs) in 2015-2016:

8

� Virtualization (VMware platform)

� New high-availability server cluster (5 nodes) for

servers and user clients virtualization

� New data storages (main and backup)

� User PCs replaced by thin clients (terminals)

� Software upgrade (Wonderware Historians

200k+100k+70k tags)

� Update of cyber security measures

� Based on the experience with this project we

would consider to implement virtualization also in

other information systems (including licensing for

safety-related systems)


REPORT


� PAMS improvement step 1 in 2014-2016

� Additional spent fuel pool (SFP) monitoring (new SFP water

level and temperature qualified measurement)

� Additional radiation monitoring (new dose rate above SFP,

activity of fresh steam in steam line, dose rates in HZ

measurement)

� PAMS improvement step 2 in 2017-2021:

� Additional radiation monitoring (existing and new) connected

to PAMS

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REPORT

SIGNIFICANT I&C PROJECTS - TEMELIN

� Power Uprate 2013 - Nominal Thermal Power 3000 MWt >>> 3120 MWt

� All reactor trip settings related to the higher power were reviewed and updated

PRPS – approx. 2500 setpoints were updated in line with the SA update DNB 3D curves used in 2

LoPs (OTDT & P2F), 3 divisions, 2 units

DPS – neutron flux & Pzr pressure RT setpoints updated.

� RCLS – Limitation Settings & Reactor Control updated.

� PCS – changes of the signal ranges (different FW & steam parameters) or alarm levels.

� NAP calculations have been evaluated and changes implemented.

� MMI – standup panels and UIS displays updated.

� Other minor systems (like ASRU) have been also updated.

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RECOMMENDATIONS

11

Severe Accident MonitoringSevere Accident Monitoring

� There are not many recent guides or standards for accident monitoring (IEEE 497 / RG 1.97)

� In the light of post-Fukushima improvements, updated guidelines for accident monitoring are needed (i.e.

equipment qualification for severe accidents etc.)

� There are not many recent guides or standards for accident monitoring (IEEE 497 / RG 1.97)

� In the light of post-Fukushima improvements, updated guidelines for accident monitoring are needed (i.e.

equipment qualification for severe accidents etc.)

� To define requirements/recommendations on severe accident I&C� To define requirements/recommendations on severe accident I&C

Motivation

Goal

RECOMMENDATIONS

12

Cyber SecurityCyber Security

� Cyber security is an essential part of overall safety

� It introduces new types of threats, requirements and measures

� There are many sources of information for IT security area

� There are several ongoing activities for nuclear area (EPRI, IEC 62645, IEC 62859, NRC RG 5.71,L)

� No real IAEA guides exist (IAEA NSS No.17)

� Cyber security is an essential part of overall safety

� It introduces new types of threats, requirements and measures

� There are many sources of information for IT security area

� There are several ongoing activities for nuclear area (EPRI, IEC 62645, IEC 62859, NRC RG 5.71,L)

� No real IAEA guides exist (IAEA NSS No.17)

� To create cyber security guide which would focus on nuclear specific issues (such as safety versus

security or overall I&C architecture)

� To create cyber security guide which would focus on nuclear specific issues (such as safety versus

security or overall I&C architecture)

Motivation

Goal

RECOMMENDATIONS

13

Process Performance OptimizationProcess Performance Optimization

� Deep view inside the process

� Understand the actual plant thermal performance

� Performance parameter calculation enhancement

� Process and equipment imperfection early warning

� Finding lost megawatts

� Deep view inside the process

� Understand the actual plant thermal performance

� Performance parameter calculation enhancement

� Process and equipment imperfection early warning

� Finding lost megawatts

� To create practical guide which would focus on enhancement of right process information� To create practical guide which would focus on enhancement of right process information

Motivation

Goal

THE END

Ales Karasek

CEZ, a. s. | Nuclear Power Plant Dukovany

NPP Dukovany, 675 50 Dukovany

E-mail: [email protected]

www.cez.cz

Jiri Pliska

OT Energy Services a.s.

Pražská 684/49, 674 01 Třebíč

E-mail: [email protected]

www.otenergy.eu

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