national report of china - international atomic energy … soft technology projects china plim-1...

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National Report of China

---- PLiM and OLE Activities in China

DOU, YiKang

TWG-LMNNP Meeting

25-27February, 2015, Vienna, IAEA

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Status of China nuclear power programme

PLiM activities in China

OLE Activities in China

Conclusions

Contents

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• China initiated nuclear power operation in 1991 when Qinshan-1 connected to grid.

• At present, China has totally 23 units in operation with total capacity about 21,038 MWe, ~2.1% of total power generation, 25 units under construction with total capacity about 27,240 MWe …

• All NPP units, either in operation or under construction, are in sea coast, the most developed area and relatively remote from coal mine areas

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NPPs Owner Type Pw(MWe)

Date of

FCD (1st

unit)

Date getting grid

(1st unit)

Qinshan-1 CNNC PWR 310 1985-03-20 1991-12-15

Daya Bay CGN PWR 2 X 984 1987-08-07 1993-08-31

Qinshan-2 CNNC PWR 4 x 650 1996-06-02 2002-02-06

Ling’Ao CGN PWR 4 x 990 1997-05-15 2002-02-26

Qinshan-3 CNNC CANDU 2 x 720 1998-06-08 2002-11-19

Tianwan CNNC WWER 2 x 1060 1999-10-20 2006-05-12

Ningde CGN PWR 2 x 1080 2008-02-18 2012-12-28

Hongyanhe CGN/CPI PWR 2 x 1080 2007-08-18 2013-02-17

Yangjiang CGN PWR 1080 2008-12-16 2013-12-31

Fuqing CNNC PWR 1080 2008-11-21 2014-08-20

Fangjiashan CNNC PWR 2 x 1080 2008-12-26 2014-11-04

Total 21038/23

Op

era

tio

nal N

PP

s i

n C

hin

a

The newest unit in operation is Fangjiashan-2, which

started commercial operation at Feb. 12, 2015

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Op

era

tio

nal N

PP

s i

n C

hin

a NPPs Owners Type Pw（MWe） FCD date

Planned date of getting grid (1st unit)

Hongyanhe CGN/CPI CPR 1000 1080×2 2007-08 1st unit combined to the grid

on 2013-02-17

Ningde CGN CPR 1000 1080×2 2008-02 1st unit combined to the grid

on 2012-12-28

Fuqing CNNC CPR1000 1080×3 2008-11 1st unit combined to the grid

on 2014-08-02

Yangjiang CGN CPR1000 1080×5 2008-12 1st unit combined to the grid

on 2013-12-31

Sanmen CNNC AP1000 1250×2 2009-04 2013-10 Delayed

Haiyang CPI AP1000 1250×2 2009-09 2014-04 Delayed

Taishang CGN EPR 1750×2 2009-10 2013-12 Delayed

Fangchenggang CGN CPR1000 1080×2 2010-07 2015-01

Changjiang CNNC PWR 650×2 2010-04 2015-01

Shidaowan CHNG HTR-PM 200×1 2012-12 2017-12

Tianwan CNNC WWER 1060×2 2012-12 2018-02

Total 27240/25

NPPs under construction

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PLiM Activities in China


Conclusions

Contents


Nuclear safety regulatory system for PLiM in China

HAF 102 Safety of

NPP Design (2004)

HAF 103 Safety of

NPP Operation(2004)

HAD xx HAD xx HAD103/11

PSR (2006)

HAD103/12

AM (2012)

…

Requirements

Guidelines

HAF 601 / HAF 604

Nuclear safety regulatory system for PLiM in China – Full life cycle ageing management

Design Constr

uction operating

Operating within design life LTO

Decommis

sioning

PSAR FSAR PSR-1 PSR-2 PSR-n+ LR app.

。。。。 PSR-

n+1

PSR-

n+m +D

app

Nuclear

safety

regulatory

AMP（traditional understanding ）

PLEX Plan Decommissioning

plan

AMP covering life cycle （understanding based on NS-G-2.12）

EQ program;

identifying

ageing deg.;

exp.

Feedback;

materials;

monitoring;

facilit. O&M;

Ageing issues

for FSAR

Data by vendors;

experience

feedback;

baseline data;

testing sampling;

hot spots

identification;

vibration

monitoring

Resource allocation: Screening; ageing

mechanisms; ageing detection; ageing

mitigation; ageing assessment; data

collection and record keeping; impact of

significant modification……

Maintaining availability of

SSCs for decommissioning

activities through AMP


Nuclear safety regulatory system for PLiM in China

Need to develop related nuclear safety requirements and guidelines:

Update HAF102 and HAF 103 based on IAEA SSR-2/1 and SSR-2/2, respectively

Development of safety regulatory system for operation license extension (OLE) (on the way of issuing)

Development safety regulatory system for decommissioning

Development of full life cycle ageing management safety regulatory system.


Organizations involving in PLiM


CNEA: China Nuclear Energy Association

NPPs Peer Review and Experience Feedback Committee

TWG-… TWG-… TWG-PLiM TWG-… …

NPPs Regulatory Designers R&Ds Universities Suppliers

CNNO DNMC JNPC NNPC FNPC HNPC YNPC SMPC SDPC ……

NNSA

NRSC

……

SNERDI

NPIC

CNPEC

(CNNC)

CNPEC

(CGN)

……

RINPO

SNPI

SPERI

SNPSC

IMR

CIAE

……

Tsinghua

NCEPU

……


Every year TWG-PLiM will:

have 1~2 technical seminars to share information on PLiM activities

have 1 TWG meeting to discuss working plan

support soft technology projects

China PLiM-1 Meeting

Wuhan, Nov. 2013 China PLiM-2 Meeting

Suzhou, Dec. 2014


NPP Name Owner Type Date of First Connection to the Grid

AMP PSR

Qinshan NPP

Unit1 CNNC PWR 1991-12-15 √ 2nd PSR is ongoing

Supported by SNERDI, CNPO

Daya Bay NPP

Unit1 CGN PWR

1993-08-31 √

2nd nearly completed

Unit2 1994-02-07

Qinshan Phase II

NPP

Unit1

CNNC PWR

2002-02-06

√

1st PSR nearly completed

Supported by CNPEC, NPIC, CNPO

Unit2 2004-03-11

Unit3 2010-08-01 √ Not yet started

Unit4 2011-12-29

LingAo NPP

Unit1

CGN

PWR

2002-02-26 √ 1st PSR nearly completed

Unit2 2002-09-14

Unit3 2010-07-15 √ Not yet started

Unit4 2011-05-03

Qinshan Phase

III NPP

Unit1 CNNC CANDU

2002-11-19 √

1st PSR nearly completed

Supported by SNERDI, CNPO Unit2 2003-06-12

Tianwan NPP

Unit1

CNNC WWER

2006-05-12

√

1st PSR is ongoing

Supported by SNERDI, CNPEC, SNPI, CNPO Unit2 2007-05-14

Ningde NPP and others

Unit1 CGN PWR 2012-12-28 Under

construction

Not yet started


Reactor Internals AMPs development for PWRs of Qinshan NPP

Qinshan-II 4 x 650

MWe PWR units Qinshan-I 1 x 320

MWe PWR unit

Entrusted by CNNO, SNERDI carried out AMP development for Qinshan-I

and Qinshan-II (2013~2015)



Evaluation on RI ageing mechanisms

Fatigue Irradiation

embrittlement Wear Stress relaxation Stress corrosion

cracking (SCC) Irradiation-

assisted stress corrosion cracking (IASCC)

Void swelling Thermal ageing

embrittlement



ANSYS 12.0.1

NODAL SOLUTION

STEP=1

SUB =1

TIME=1

SINT (AVG)

DMX =31.535

SMN =.628122

SMX =218.278

SMXB=356.155

1

.628122

24.811

48.995

73.178

97.361

121.545

145.728

169.911

194.095

218.278

ANSYS 12.0.1

NODAL SOLUTION

STEP=1

SUB =1

TIME=1

TEMP

SMN =288.8

SMX =390.664

1

MX

288.8

300.118

311.436

322.755

334.073

345.391

356.709

368.027

379.346

390.664

1

ELEMENTS

Path1 Path4

Path5

Path6

Path2

Path3

Path7

Path8

Path9

Stress map for RI (part) Temperature map for RI (part) Path of fatigue evaluation

Neutron fluence map for RI (part) Transient prediction for RI


PWR Primary Boundary Piping System AM Research for Qinshan NPP

-- Qinshan-I and Qinshan –II, carried out by SNERDI

Ageing Mechanism Analysis

Aging Condition

Assessment Guide Line

Structure of AM Data Base

Aging Condition Evaluation

and Remaining Life

Evaluation

Primary Boundary Piping

System AMP -- General


System AMP – Unit Specific

Technical Guideline for


System AM Evaluation

Main tasks:



• Examples of AM

Analysis

– Thermal Ageing

– PWSCC



• Examples of Ageing

Condition Analysis

– Thermal Stratification

– Crack Growth

– Fatigue

Analysis model

Stress analysis

Loading match

Fatigue Evaluation


Aging management information system development by CNPO

General ageing management system for LR scoping and screening

Critical SSCs ageing management database, including RPV,SG, PRZ, cable, Fuel channel, Penetration etc,

Fatigue monitoring system


Daya Bay NPP Ex-Vessel Neutron Dosimetry carried out by SNPSC

The Ex-Vessel Neutron Dosimetry

(EVND) was installed in one of units

of Daya Bay NPP in October 19th

2013

Data from EVND provide best

estimation of RPV neutron exposure

together with data from RPV

surveillance capsules and

calculated neutron fluence, which

can be used in following aspects:

Assess the neutron

embrittlement of RPV

monitor the change of

neutron fluence rate and

spectrum after modification of

core design and reactor

internals

Provide data for RPV aging

management and life extension

of NPP

Crew of EVND installation in Daya Bay NPP


Life management for conventional island carried out by SPERI

Equipment Supervision

Pfm.

tests

Monitoring on vib., stress and pfm.

Metal

supervision and

failure analysis

Life

mgm.

R&D

topical

projects

Sys. upgrading Eq. upgrading Maint. support

Overall Target：Digital plant, good economy, high reliability, good

safety performance and well under control


Involvement in IAEA CRP on FAC Benchmark by SNERDI

single

phasedouble

phase

single

phasedouble

phase

Heat balance diagram

Line modeling

Analysis results

SNERDI involves in IAEA CRP project on

FAC benchmark using 3 NPP datasets

provided by IAEA to carry out calculation

using software CHECWORKS focusing on

the following points:

Heat balance diagram (HBD)

Global data input

Line modeling

Analysis results

Conclusions


Involvement in IAEA CRP on FAC Benchmark by SNERDI

Loop Test

• Testing loop was

established to investigate

the FAC behaviors of SA

335-P11 under simulated

main steam of NPP. Inlet flow velocity

1) morphology of original surface 2) disk specimen 3) tubular specimen Morphology of specimen

after test

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Contents




Conclusions

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OLE activities in China

Background

The design life for Qinshan-1 is 30

years. It has been in safe operation

for 24 years since Dec. 15,1991.

The preparation for life extension of

Daya Bay unit-1 is also underway,

though its design life is 40 years.

Although nuclear safety

requirements and guidelines for life

extension have not been

established, the preparation to

establish license system is ongoing.

In China, life extension is called

Operational License Extension (OLE)

Qinshan-1

Daya Bay NPP

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OLE activities in China

Background

In 2014, a series meetings on OLE nuclear safety requirements were held by

NNSA, participated by CNNC, CGN, SNPTC, etc.. As outcomes, technical

policies on OLE will soon put forward.

At the same time, a feasibility study was carried out by CNNO under the

support by SNERDI, CNPO, etc. in 2014. CNNC approved the feasibility

study report and OLE activities for Qinshan-1 started. More technical

exchanges with IAEA and others were also carried out.

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OLE activities in China – CNNO/Qinshan-1

Technical communications in 2014

• NPP license renewal workshop focusing on TLAA and March 24-28, 2014

• Intercommunication with AREVA and the United Stated NRC April 16, 2014

• Intercommunication with Westinghouse’s chief engineer on the processes of NPP OLE program.

• IAEA workshop on the metal fatigue TLAA and buried pipe during Oct, 14 to 17, 2014

Technical Communication with NNSA in 2014

• CNNO discussed with NNSA on OLE issues and NNSA encouraged CNNO to go ahead.

• NNSA 1st Meeting on OLE April 18, 2014

• NNSA 2nd Meeting on OLE Aug. 21, 2014

• NNSA 3rd Meeting on OLE, Oct. 16, 2014

• As outcomes of study under the support by SNERDI and CNPO, 5 technical reports were completed covering investigation of LR models (US, IAEA, EDF), comparison of models, environmental impact, supervision, and administrational permission, etc.

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OLE activities in China - NNSA

The OLE application should be submitted 5 years before the expiry of the license.

Maximum 20 years extension of operation license.

Review of OLE application will based on the license basis when approved for operation plus supplemental safety requirements during operation.

Besides Chinese nuclear safety regulatory documents, some international guidance or practice may be applicable.

The application should be submitted along with the reports on

Integrated plant assessment (IPA) report with a series of supporting materials such as TLAA reports, safety assessment reports for SSCs refurbishment, etc..

Addendum of environmental impact assessment report.

Addendum and revised FSAR.

Main points of technical policies for OLE (under construction)

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OLE activities in China – CNNO/ Qinshan-1

2013 2014 2015 2017 2020 2021 2016

R18（2018.4～2019.4） R19、R20

2021.12

获得延照运行执照

OLE

permission

制定技改总体计划 Integrated schedule

establishment

Main Schedule for Qinshan-1 OLE

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OLE activities in China – CGN/ Daya Bay

To accomplish detailed LCM analysis of equipments and the initial overall planning of

conventional island

Life evaluation

of critical

equipments in

Nuclear Island

Condition and

life evaluation

of other critical

equipments

To establish life management technical guidelines and life management workflow and management order and to organize special training according to the related AP913&AP940 guidelines and

EXELON

Based on the specified systems/equipments, continue to implement life

management

2008-2012 2012-2013 2014 2015 year

Life/A

sset

Man

ag

em

en

t

Demonstration Technology

Study

Technology

Improvement Reinforcement Application

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OLE activities in China – CGN/ Daya Bay

Daya Bay License Renewal Project LRA will be submitted in 2019. and expect to approved by NNSA in 2022.

LR approval

Phase of

analysis

and review License extend period

Original life End of First

LR term

Data acquisition

2004 2014 2024 2034 2044 2054

Implementation plan

Executive commitment

Integrated plant assessment

Time limited aging analyses

Feasibility analysis

Environmental evaluation

2022

The review question answering

UFSAR LRA Roadmap

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Contents




Conclusions

Conclusion:

China nuclear power programme is steadily promoted

based on principle of safety priority.

Activities of PLiM for Chinese NPPs are undertaken by

all related parties covering wide range of topics. Domestic

TWG on PLiM is established to provide platform of

technical exchange and knowledge sharing.

Activities of OLE for Chinese NPPs, especially for

Qinshan-1, is on the way, either on regulatory side and on

utilities side.

Thanks for your attention.

Happy Lunar New Year!

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