LTO Presentation - iaea.org · PDF fileIn October 2009, ... No technical obstacle in the area...

LTO Presentation 24 October 2017 – Economic assessment of LTO, Lyon, France

G. Pironet

Introduction

Personal introduction

24 October 2017 – Economic assessment of LTO, IAEA PLIM Conference, Lyon, France 3

Guy Pironet, ENGIE Electrabel

Program Manager LTO Tihange 1 from March 2013 until March 2017

Deputy Site Manager Tihange NPP since April 2017

Agenda


1. Introduction

2. Regulatory Context

3. The LTO analysis project

4. Financial Feasibility and Business Case

5. Conclusion

6. Questions - Answers

Tihange 1 NPP


Owned by: Electrabel (50%), EDF (50%),

Commissioning date: 10/1975

Reactor type: 3 loops PWR

Power: 860 MWe uprated

to 962 Mwe

NSSS supplier:

— FRAMATOME/Westinghouse

— Fuel: 15x15 - 12 ft core - 157 FA

– 18 months cycle

Regulatory context

Belgian Regulatory context


Nuclear phase out law 2003: article 4 §1

Les centrales nucléaires destinées à la production industrielle d'électricité à

partir de la fission de combustibles nucléaires, sont désactivées quarante ans

après la date de leur mise en service industrielle et ne peuvent plus produire

d'électricité dès cet instant.

In Belgium, the nuclear phase out law limits the life time of nuclear

power plants to 40 years.

In October 2009, the Belgian Government announced its intention to make the

industrial operation of the nuclear powerplants of Tihange 1 and Doel 1-2 legally

possible up to 2025 (this means a life time extension to 50 years).

This period of 10 years of life time extension is considered as LTO-

period.

Introduction: Understanding the Belgian Context

FANC Framework – Belgian Authorities


Position issued by the FANC in October 2009

LTO to be evaluated in Safety Evaluation

Framework;

In line with industry practice;

Besides an evaluation of the preconditions +

CK&B for LTO, 2 Areas: Ageing (active and

passive SSC) and Design;

Ageing to be evaluated in accordance with

10CFR54 and IAEA SRS57.

Introduction: LTO - Some essentials

FANC Framework


Position issued by the FANC in October 2009

Introduction: LTO - Some essentials

End 2011:

File LTO Report V1

June 2012:

File LTO Report V2

ADU :Agreed Design Upgrade

2015 < 2020

Update Safety Evaluation Report

LTO File Define ADU*

Update Safety

Evaluation Report

Implement AMP

Implement Design

Upgrade Modifications

The LTO analysis project

Pre-Conditions – Competence Knowledge and Behaviour Results


The Tihange 1 NPP LTO Implementation Program: Tihange 1 NPP LTO Analysis results - Overview

Pre-Conditions

Competence,

Knowledge and

Behaviour

Analysis of existing Evaluations

Nuclear Safety Culture, including behaviour and attitudes

Competence development and management process

Knowledge Management, in particular knowledge, use and

integration of design basis during engineering of plant modifications

Plant programmes Management

system

Safety

analysis

TLAA

Licensing

basis

documents

Maintenance

Equipment

qualification

Surveillance

and monitoring

Chemistry

programs

In service

inspection

Modification

Management

Configuration

Management

Belgian methodology for AMPs in Ageing Management


IAEA NS-G-2.12 methodology

Belgian Approach for the use of AMPs in Ageing Management

The LTO analysis project: Methodology

LTO Ageing Analysis – Scoping Mechanical Systems


Systems in scope are:

Passive: Pressure boundary

Active: Pressure boundary + “Movement = YES”


CAE CAR/CAS CAU CCV CEB CEI CEN CEX CGN/CGH/CGC CHE

CIS CPE CRI CRP CSC CTP CVA CVD CVP EAN

EAS EDN EEE GBR GDS PGV RBR RPP RRA SUR

TEG TEL VBL VBU/VBW VBP VCT VEA VEE VGA VLE

Ageing - Mechanical Systems


Global Conclusion

No technical obstacle in the area of Mechanical Systems exists for Life Time

extension to 50 Years.

Specific points

— Specific corrective and preventive actions need to be taken:

• AME Passive: implement planned project CEI, CSC and CRP

• AME Active: implement RCM-results, combined with systematic trending

— Major uncertainties remained (financial contingency):

• TLAA: CCV Q01Pv Regenerative Heat Exchanger

• AME Passive: Replacement of CC/RW Heat Exchangers

Remark:

— Important in scope SSCs have been replaced during plant operation: steam

generators, reactor vessel head, replacement of RHR piping, …


Ageing Analysis – Scoping Mechanical Structures and Civil Works


1. Mechanical structures

— Primary containment structures & Joints

— Other non-category 1 structures within the scope of LTO

— Leaktight doors

— Pipe whip restraints and jet impingement shields

— E I&C panels, racks frames, cabinets and other enclosures

— Cable trays and supports

— ASME class 1 hangers, supports and snubbers

— Non-ASME class 1 hangers, supports and snubbers

2. Load Handling Systems

— Load Handling Systems and Nuclear Fuel Storage

3. Fire protection

— Fire Restistant Barriers


Ageing - Mechanical Structures and Civil Works


Global Conclusion

No technical obstacle in the area of Mechanical Structures and Civil works

exists for Life Time extension to 50 Years.

Specific points Mechanical Structures

The main specific issue is a systematic follow-up of non-ASME equipment:

— Baseline inspection and corrective actions, with specific attention to fire barriers

— Implementation of an ageing monitoring program of non-ASME equipment


Ageing Analysis – Scoping Mechanical Structures and Civil Works


4. Civil Works

— R – Reactor Building (internal structures, liner and double containment)

— N – Nuclear Auxilary Building

— E – Electrical Auxilary Building

— K – Water/Steam Building

— D – Emergency Diesels Building (1st level)

— P – Pump Station

— M – Turbine Hall

— J – Cooling Tower

— Circulating Water System

— Cable Galleries and Tunnels

— Raw Water and Liquid Radiological Waste

— Water Intake structure

— Ventilation Stack

— Emergency Cooling Water Wells


Ageing - Mechanical Structures and Civil Works


Global Conclusion

No technical obstacle in the area of Mechanical Structures and Civil works

exists for Life Time extension to 50 Years.

Specific points Civil Works

— Specific corrective and preventive actions need to be taken:

• Cooling tower: packing, internal structures and additional balances

• Additional measurements for “concrete” trending

— Major uncertainties remained (financial contingency):

• Seal between reactor building liner and base mat. Inspection during outage.

• Some uncertainties still remain and have to be lifted with additional inspections.


Ageing Analysis – Scoping E I&C (ref. NEI 95/10)



CG 73 Alarm Unit CG 91 Light Bulbs

CG 74 Analyzers CG 92 Loop Controllers

CG 75 Annunciators CG 93 Meters

CG 76 Batteries CG 94 Power Supplies

CG77 Cables and Connections CG 95 Radiation Monitors

CG 78 Chargers, Converters, Inverters CG 96 Recorders

CG 79 Circuit breakers CG 97 Regulators

CG 80 Communication Equipment CG 98 Relays

CG 81 Electrical heaters CG 99 Signal Conditioners

CG 82 Heat tracing CG 100 Solenoid Operators

CG 83 Electrical Controls and Panel Internal

Component Assemblies

CG 101 Solid-State Devices

CG 84 Elements, RTDs, Sensors,

Thermocouples, Transducers

CG 102 Switches

CG 85 Fuses and fuseholders CG 103 Switchgear, load centers, Motor control

centers

CG 86 Generator, Motors CG 104 Transformers

CG 87 High-voltage insulators CG 105 Transmitters

CG 88 Surge Arresters CG 128 Pressure reducer

CG 89 Indicators CG 129 Instrumentation tubing

CG 90 Isolators CG 131 Packages

Ageing Analysis – Scoping E I&C



Cable, supported by cable

trays = link to Structures &

CW

Cable to actuator = link with

Mechanical (via valve, damper, pump, …)

Electrical penetration =

link with Structures & CW

Power supply, RPS, … =

link to Structures & CW

Identified FL

Identified FL

Specific CG Specific and

Multiple CG

Specific and

Multiple CG

Specific CG

Specific and

Multiple CG

Specific and

Multiple CG

Specific CG Specific CG

Ageing - E I&C


Global Conclusion

No technical obstacle in the area of E I&C exists for Life Time extension to 50

Years.

Technical challenges:

— Obsolescence

— Ageing Management (preserving equipment qualification)

— Equipment Qualification requirement

Remark:

— Important SSCs have been replaced during plant operation: RPS, NIS, PIS, main

electrical boards


Ageing - E I&C


Global Conclusion

No technical obstacle in the area of E I&C exists for Life Time extension to 50

Years.

Specific points

In order to ensure safe Life Time Extension to 50 years, major investments were

needed. The most important were:

— Replacement or refurbishment of 1E Electrical motors , including valve actuators

— Replacement Fire Detection System

— Refurbishment of the I&C components of pneumatic and hydraulic actuators

— Replacement of electrical AC/DC power supply (380V-220V-115V)

— Conformity of incore thermocouples

— Refurbishment of electrical and instrumentation reactor building penetrations

(replacement of some feedthroughs)


Design Methodology



1,E-06

1,E-05

1,E-04

1,E-03

1,E-02

1970 1980 1990 2000 2010 2020 2030

Co

re D

amag

e F

req

uen

cy o

r C

DF

(

1 /

rea

cto

ryea

r )

Year

Long Term Operation - Agreed Design Upgrade

Core Damage Frequency (CDF) as a function of time

IAEA target for existing plants

IAEA target for future plants

Past

Future

Trend

First Periodic

Safety Review

Design


The identified concerns lead to proposed technical improvements.

The proposed improvements can be organized in 9 different areas, attending each a

specific safety concern.

The LTO analysis project: Tihange 1 NPP Results

Backup Safety Earthquake Fire

Flooding Operator Training Physical Separation

Qualification Severe Accident System

Backup Safety Earthquake Fire

Flooding Operator Training Physical Separation

Qualification Severe Accident System

1 3

2

4

Facts and Figures


LTO Analysis Project: 3 year project – peak: up to 130 people

For each plant, Tihange 1 NPP and Doel1/2 NPP, establishment of:

Ageing

— Object of Ageing Management Evaluations

• About 40 fluid systems

• 26 structure types

• 36 EI&C component types

Pre-Conditions & Competence Management

— 12 Self-Assessments

Design

— About 30 Agreed Design Upgrades

Total of 750 documents or about 12500 pages… for each plant…

Analysis fully in line with IAEA expectations


Financial Feasibility and

Business Case

Feasibility and Business Case


Analysis of the impact of the LTO Analysis

What are the related risks (nuclear safety, industrial safety, complexity, parts and

qualified staff availability, …)?

What is the financial impact of each commitment, what is the impact on HR?

What is the impact on plant availability and fleet availability?

Potential revenues and/or taxes

Solution

Major risks Matrix

Establishment of Budget & Commitment files;

Establishment of global planning (plant implementation and fleet optimization)

ALSO, integration of Non-Safety Related projects for PLEX





Risk Analysis

CAPEX overrun

Longer outage

Additional Long Stop

Sourcing Delay

Market risk

Financial Analysis


Ageing Budget & Commitment files – 1 file per deliverable


All files grouped for individual validation and global impact analysis

Deliverable

Overview

Origin

Exective summary

analysis

Risk analysis

CAPEX & manpower

OPEX & manpower



PLEX analysis

— Analysis of Tihange 1 NPP project portfolio

• Replacement of N1E electrical motors

• Replacement of step-up transformers

• Replacement of main generator protection system

• Replacement of main turbines regulation system

— Analysis of existing “Ageing Summaries”

— Use of operating experience and tacit knowledge

Remark:

— Important out scope SSCs have also been replaced during plant operation: LPB main

turbines, heat exchangers, condensors, …


Significant milestones


The Tihange 1 NPP LTO Implementation Program: Tihange 1 NPP LTO Analysis

results - Overview

End 2011 File LTO Report V1

Mid 2012 File LTO Report V2

ADU :Agreed Design Upgrade

10/2015 • Préconditions

• CK&B

< 2020 Design

Implement Design

Upgrade Modifications LTO File Define ADU*

Update Safety

Evaluation Report

Implement AMP

Outage 2014

S1

Outage 2016

S2

Outage 2017

Design Part 1

Outage 2019

Design Part 2

Margin


Margin is determined as the difference between:

Conclusions

To keep in mind


1 Program grouping more than 100 projects

1 Team, an integrated organization EBL and TE.

3 Areas:

— Ageing Management

— Design Upgrade

— Processes

Planning:

— 30 September 2015: Processes up to date (Pre-Conditions and Competence/Knowledge

Management)

— Outage 2016: Ageing Management

— 2020: Design Upgrade

Investment: 600 M€ - Current best estimate on-track (progress ± 70%)

The Tihange 1 NPP LTO Implementation Program: Current Status

Questions and Anwers


Questions - Answers

LTO Presentation - iaea.org · PDF fileIn October 2009, ... No technical obstacle in the area...

Documents

Transcript of LTO Presentation - iaea.org · PDF fileIn October 2009, ... No technical obstacle in the area...