Zheng Mingguang - IAEA · • Yangjiang NPP • Dayabay site DayaBay 2 ×900 MW PWR, 1994 Ling’ao2×1000MW PWR 2002 Ling’ao-II 2 ×1000MW Sanmen NPP 2 units of AP1000 • Qinshan

2007-10-15SNERDI/SNPTC

上海核工程研究设计院上海核工程研究设计院上海核工程研究设计院上海核工程研究设计院

Shanghai Nuclear Engineering Research and Design InstituteZheng MingguangSNERDI Vice President, China

• Graduated (Ph.D. Nuclear Engineering & Science) from Shanghai JiaotongUniversity.

• Responsible for PM of the design of Hongyanhe NPP (4X1100MWe) and Chashma 2 in Pakistan

• Chief Engineer to develop China Advanced Fast Reactor

• Technical supporting service for Operating nuclear power plants



Shanghai Nuclear Engineering Research and Design Institute

2

Prospects of PLiM in ChinaProspects of PLiM in China

SNERDI/SNPTCSNERDI/SNPTCSNERDI/SNPTCSNERDI/SNPTC

Oct. 15, 2007 Shanghai China

Dr. Zheng Mingguang




Briefing about SNERDIBriefing about SNERDI

3

1.1. SNERDI SNERDI is specialized in design of NSSS, main is specialized in design of NSSS, main component, I&C, civil engineering, plant engineering and component, I&C, civil engineering, plant engineering and overall design of NPP, located in Shanghai, east China, overall design of NPP, located in Shanghai, east China, was established in 1970, and was established in 1970, and currently with ~900 currently with ~900 staffs. staffs.

2.2. SNERDI is the designer of the first NPP in China SNERDI is the designer of the first NPP in China and one of the major research and design and one of the major research and design institutes on nuclear power plant in China.institutes on nuclear power plant in China.

3.3. SNERDI was a subsidiary of China National SNERDI was a subsidiary of China National Nuclear Corporation (CNNC) and now is unit in Nuclear Corporation (CNNC) and now is unit in State Nuclear Power Technology Corporation of State Nuclear Power Technology Corporation of China (SNPTC) . China (SNPTC) .




Brief about SNPTCBrief about SNPTCThe functions of SNPTC are to The functions of SNPTC are to •• Organize and coordinate negotiation Organize and coordinate negotiation

and technology importation and and technology importation and introduction of Gen. III.introduction of Gen. III.

•• Put into commercial operation of 4 pilot Put into commercial operation of 4 pilot units of AP1000 safely and timelyunits of AP1000 safely and timely

•• Ensure Gen. III localization in Ensure Gen. III localization in engineering, manufacturing and project engineering, manufacturing and project managementmanagement

•• Be responsible for the development of Be responsible for the development of Chinese Advanced PWRChinese Advanced PWR

4




ContentsContents1. Operating NPPs and prospects in China1. Operating NPPs and prospects in China2. Challenges encountering2. Challenges encountering3. Main AM/PLiM in China3. Main AM/PLiM in China4. Prospective activities of PLiM in China4. Prospective activities of PLiM in China5. Summary and suggestion5. Summary and suggestion6. Acknowledgement 6. Acknowledgement

5




sino-us JCC

1. OPERATING NPPS IN CHINA 1. OPERATING NPPS IN CHINA 1/61/6------Qinshan IQinshan I--19911991

LING AOLING AO




sino-us JCC

1. OPERATING NPPS IN CHINA 1. OPERATING NPPS IN CHINA 2/62/6——DayabayDayabay--19931993

DAYA BAYDAYA BAY

LING AOLING AO




1. OPERATING NPPS IN CHINA 1. OPERATING NPPS IN CHINA 3/6 3/6 ––Qinshan IIQinshan II--20022002

QINSHAN IIQINSHAN IIQINSHAN IIQINSHAN IIQINSHAN IIQINSHAN IIQINSHAN IIQINSHAN II

LING AOLING AO




sino-us JCC

1. OPERATING NPPS IN CHINA 1. OPERATING NPPS IN CHINA 4/64/6——Qinshan IIIQinshan III--20022002

LING AOLING AO

Qinshan Qinshan

IIII




1. OPERATING NPPS IN CHINA 1. OPERATING NPPS IN CHINA 5/65/6——LingaoLingao--0202

sino-us JCC




sino-us JCC

1. OPERATING NPPS IN CHINA 1. OPERATING NPPS IN CHINA 6/66/6----TianwanTianwan

TIANWANTIANWAN




12

1. Prospects1. Prospects–– plants to be built plants to be built •• LingaoLingao II 2X1000MWe II 2X1000MWe (FCD Dec 15 2005)(FCD Dec 15 2005)

•• Qinshan II extension 2X650MWe Qinshan II extension 2X650MWe (FCD Apr 28 2006) (FCD Apr 28 2006)

•• HongyeheHongyehe NPP 4X1000MWe NPP 4X1000MWe (FCD Aug 18 2007)(FCD Aug 18 2007)

•• SanmenSanmen NPP 2XAP1000 NPP 2XAP1000 (FCD Beginning2009)(FCD Beginning2009)

•• HaiyangHaiyang NPP 2XAP1000 NPP 2XAP1000 (6months after SM)(6months after SM)

•• Fangjiashan(QinshanFangjiashan(Qinshan+) 2X1000MWe+) 2X1000MWe•• YangjiangYangjiang NPP 2X1000MWeNPP 2X1000MWe•• NingdeNingde NPPNPP•• FuqingFuqing NPPNPP•• TaishanTaishan




sino-us JCC

ZhejiangZhejiang SanmenSanmen site viewsite view




sino-us JCC

Shandong Shandong HaiyangHaiyang Site viewSite view

sino-us JCC

YangjiangYangjiang SiteSite




sino-us JCC

Qinshan (Qinshan (Fangjiashan)SiteFangjiashan)Site viewview




17• Yangjiang NPP

• Dayabay siteDaya Bay 2 ××××900 MW PWR, 1994Ling’ao 2 ××××1000MW PWR 2002Ling’ao-II 2××××1000 MW

Sanmen NPP2 units of AP1000

• Qinshan siteQ1 300MW, PWR, 1991Q1 300MW, PWR, 1991Q1 300MW, PWR, 1991Q1 300MW, PWR, 1991

Q2 2××××600MW, PWR, 2002Q3 2×××× 728MW, CANDU, 2003Q2 extend 2×××× 600MW, PWRQ1 extend (Fangjiashan) 2 ××××1000

• Tianwan NPP 2×××× 1000MW, WWER,

• Haiyang 2 units of AP1000

• Hongyanhe NPP4 ×××× 1000 MW

1. Prospects up to 2020 in China1. Prospects up to 2020 in China

18

Nuclear Power Plan in Mainland China up to 2020

2.11.20.3

4.36.0 6.7

8.5

12.5

40

0

5

10

15

20

25

30

35

40

1 99 1

1 99 2

1 99 3

2 00 2

2 00 3

2 00 4

2 00 5

2 01 0

2 02 0

GWe

40 GW in operation

18 GW under construction




19

Quick economic development Quick economic development Needs more EnergyNeeds more EnergyWhile oil price risingWhile oil price rising

Clean Environment Clean Environment and Sustainable and Sustainable Development need Development need less greenhouse gasless greenhouse gas

How to do? need more NPPsHow to do? need more NPPs

2. Challenges encountering 2. Challenges encountering --11 more Nuclear Power neededmore Nuclear Power needed




2. Challenges encountering 2. Challenges encountering ––22 various supports neededvarious supports needed

20

Government support

Public understanding Safety guaranty

Return of investmentSufficient fuel

supply

Sufficient spare parts supply

Outstanding Achievement of operational NPPs

Sustainable and long-term development for nuclear

power

Two key factorsTwo key factorsSafety and EconomySafety and Economy

2. Challenges encountering 2. Challenges encountering ––33 over 100 aged plantsover 100 aged plants

21

1

5

2

6

3

6

4 43

65 5

9

6

4

1011

14

22

24

3233

21

19

2221

7

15 1516

11

23

15

1011

5

7

3

12 2

0

5

10

15

20

25

30

35

40

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

Num

ber o

f Rea

ctor

s

Number of units

According to IAEA’s information

~100 units more than 30 years

Ages of totally 435 units in operation 327 units more than 20 yeas

Years of operation




2. Challenges encountering 2. Challenges encountering ––44 how to get the way outhow to get the way out

1.1. How toHow to have more NPPshave more NPPs and and to maintain to maintain sustainable development : sustainable development : All the operating NPPs shall be operated safely, All the operating NPPs shall be operated safely, reliably and economically reliably and economically as Nuclear industry is as Nuclear industry is sensitive, fragile and no boundarysensitive, fragile and no boundary

2.2. How to ensure safety of operational NPPs:How to ensure safety of operational NPPs:Active and effective plant life management Active and effective plant life management ieiePLiM from the beginning is indispensable PLiM from the beginning is indispensable furthermore 327 units operated over 20 years furthermore 327 units operated over 20 years and 100 over 30 yearsand 100 over 30 years

22




2. Challenges encountering2. Challenges encountering––55 differences and difficultiesdifferences and difficulties

In China, only 3 of the 11 operational units have In China, only 3 of the 11 operational units have operated more than 10 years and PSR performed in operated more than 10 years and PSR performed in time. time. Others are to be built. Others are to be built. But followingBut following aspects aspects shall be observedshall be observed: : 1.1. Different types of reactors Different types of reactors (PWR,PHWR)(PWR,PHWR)

2.2. Different technology Different technology (active and passive)(active and passive)

3.3. Different power level Different power level (300 ~ 1250MWe)(300 ~ 1250MWe)

4.4. Different standards Different standards (China(China、、USUS、、FrenchFrench

、、RussiaRussia

、、CanadaCanada and others)and others)

So some challenges encountering in setting So some challenges encountering in setting up the uniform technical platform for up the uniform technical platform for implementing PLiM and sharing the resourcesimplementing PLiM and sharing the resources

23




24

Plant Life Management (PLiM) shall Integrate with AM (considered in design, operation and maintenance actions to control the ageing degradation of SSCs) and Economic Planning to:

(1) Optimize the operation, maintenance and service life of SSCs

(2) Maintain an acceptable level of performance and safety

(3) Maximize return on investment over the service life of the plant.

2. Challenges encountering 2. Challenges encountering ––6 6 PLiM requirementsPLiM requirements




25

Through effective PLiM NPPs should be able to: (1) show cost-benefit and optimization; (2) ensure safety and functionality; (3) show competitiveness of nuclear power over

conventional source of energy by long-term operation over the service life;

(4) maintain the drive of sustainable development of nuclear power.

2. Challenges encountering 2. Challenges encountering ––7 7 target of the effective PLiM target of the effective PLiM




26

3. Main AM/PLiM in China3. Main AM/PLiM in China----DemandsDemands

Senses of mission and duty on nuclear safety (to public)

Strategic consideration for long term safety and chasing return of investment as much as possible

nuclear safety regulatory requirements

Demand and urge utility to implement effective PLim

R&D institutes carry out research & provide tech. support to NPP

27

3. Main AM/PLiM in China3. Main AM/PLiM in China--Responsibilities

Nuclear Safety regulatory

UtilitiesDesign and R&D orgs.

•• Safety requirementsSafety requirements•• Acceptable criteriaAcceptable criteria•• Safety surveillanceSafety surveillance•• LR Review and approvalLR Review and approval•• Keep safety Keep safety

marginsmargins•• AMP AMP implementationimplementation•• Ageing Ageing detectiondetection•• Ageing Ageing mitigationmitigation•• Return back of Return back of investmentinvestment

•• AM in designAM in design•• R&D in AMR&D in AM•• Detection Detection methodmethod•• Mitigation Mitigation measuresmeasures•• LR supportLR supportIAEA supportIAEA support




3.1 Nuclear safety requirements3.1 Nuclear safety requirements

NNSA issued a series of PLiM related NNSA issued a series of PLiM related requirements, basically equivalent to those requirements, basically equivalent to those made by IAEA. made by IAEA.

•• HAF series: nuclear safety requirements HAF series: nuclear safety requirements covered from design to operationcovered from design to operation

•• HAD series: nuclear safety guidelinesHAD series: nuclear safety guidelines•• Safety performance indication systemSafety performance indication system

28




29

HAF 102 Safety of NPP Design (2004)

HAF 103 Safety of NPP Operation(2004)

HAD xx HAD xx HAD103/11PSR(2006)

HAD xx…

Codes

Guidelines

3.1 Nuclear safety requirements3.1 Nuclear safety requirements--structuresstructures

other HAF




30

•• Appropriate margin should be provided in the Appropriate margin should be provided in the design for all design for all SSCsSSCs important to safety. important to safety.

•• Sufficient consideration of ageing and wear out Sufficient consideration of ageing and wear out effects in order to ensure capability to perform effects in order to ensure capability to perform safety functions through lifetime.safety functions through lifetime.

•• Provision should also be made for monitoring, Provision should also be made for monitoring, testing, sampling and inspection to asses testing, sampling and inspection to asses predicted and identify unanticipated ageing predicted and identify unanticipated ageing mechanisms.mechanisms.

•• PSA to be used to check the balance of designPSA to be used to check the balance of design

3.1 Nuclear safety requirements3.1 Nuclear safety requirements——example HAF 102 Designexample HAF 102 Design




31

•• Emphasizing comparison of current codes and Emphasizing comparison of current codes and standards to judge safety status of NPPsstandards to judge safety status of NPPs

•• Ageing is one of the 14 safety factors to be reviewedAgeing is one of the 14 safety factors to be reviewed•• Ageing review focuses onAgeing review focuses on：：①① AMPAMP；；②② list of list of SSCsSSCs covered by AMPcovered by AMP；；③③ Understanding of ageing mechanismsUnderstanding of ageing mechanisms；；④④ Ageing effects to safety function; Ageing effects to safety function; ⑤⑤ Availability of data; Availability of data; ⑥⑥ Detection and mitigation of ageing degradation; Detection and mitigation of ageing degradation; ⑦⑦ Acceptance criteria and safety margins; Acceptance criteria and safety margins; ⑧⑧ Actual ageing status and safety margins of Actual ageing status and safety margins of SSCsSSCs

3.1 Nuclear safety requirements3.1 Nuclear safety requirements——example HAD example HAD 103/11 PSR103/11 PSR




32

•• Nuclear safety performance indicating system Nuclear safety performance indicating system established is required to be implementedestablished is required to be implemented

•• Three barriers of radioactivity and 24 factors Three barriers of radioactivity and 24 factors are required to be assessed and reported are required to be assessed and reported timely and quantitativelytimely and quantitativelyIt is additional demonstration of effective PLiMIt is additional demonstration of effective PLiM

3.1 Nuclear safety requirements3.1 Nuclear safety requirements——example Safety performance indicationexample Safety performance indication




33

3.2 Activities of PLiM in NPPs 3.2 Activities of PLiM in NPPs –– PSR orientedPSR oriented

•• These 3 units finished their first PSR from 2001 to 2004. These 3 units finished their first PSR from 2001 to 2004. •• During PSR, 11 safety factors were carefully reviewed During PSR, 11 safety factors were carefully reviewed

and relevant supporting materials were handed over to and relevant supporting materials were handed over to NNSANNSA..

•• The principle of PSR in two plants are the same, however The principle of PSR in two plants are the same, however the way of practice is somewhat different.the way of practice is somewhat different.�� For For QinshanQinshan--I,I, as a prototype unit, a more thorough as a prototype unit, a more thorough

review was carried outreview was carried out�� For For DayaDaya BayBay, as they are similar to those of , as they are similar to those of NPP in NPP in

FranceFrance, more focused on , more focused on differencesdifferences and and EDFEDF’’ssexperience experience referredreferred•• A lot of followA lot of follow--up work towards establishment of AMP is up work towards establishment of AMP is

being carried out by the two plants. being carried out by the two plants.

34

3.2 Activities of PLiM in NPPs 3.2 Activities of PLiM in NPPs –– Qinshan IQinshan I

•• 11 safety factors were reviewed in accordance with 11 safety factors were reviewed in accordance with HAF 0312 (equivalent to HAF 0312 (equivalent to IAEAIAEA’’ss NSNS--G 2G 2--10)10)

•• A series of review reports were prepared by NPP A series of review reports were prepared by NPP and TSOand TSO and and handhandeded over to NNSA for reviewover to NNSA for review

•• Suggestions and conclusions were put forward by Suggestions and conclusions were put forward by NNSANNSA

•• MidMid-- and longand long--term actions were taken step by step term actions were taken step by step during next 10 yearsduring next 10 years……

•• An example of Ageing Management review were An example of Ageing Management review were providedprovided……




35

QNPC/SNERDI info. centers

CNIC

Reviewing applicability and effectiveness of AMP and making suggestions for revision

NRC series(GALL, SRP )

ASME series

Learning domestic and oversea experiences

AMR guideline

Equipment list according to screening criteria

Codes and standards, guidelines, regulations and documents relating to AMP and methodology

HAF series

IAEA series

Screening method recommended in HAF- J0068

PSR-P-001 (QNPC））））

Identifying ageing mechanisms for individual components

AMR (including historic info. , operating transient, maintenance records, analysis reports, present statues of components, organization, etc.)

Present status of NPP

EQ

Design documents

Ageing analysis reports; suggestions on operation, monitoring, database system, and countermeasures for mitigation; detailed analyses on actual safety margin for some components are necessary

Management department

Mid- or long term modification plan

Corrective action

yes

Identifying whether existing programs and procedures are suitable for AM; forming AMP frame and formulation plan for AMP

Making AMP

Report on AM reviewfeedback

no

Procedure of AMR during PSR Submission to NNSA for approval

HAF0312 (NNSA)

Whether AMP exists?

IEEE series

Corrective action




3.2 Activities of PLiM in NPPs 3.2 Activities of PLiM in NPPs –– Qinshan IQinshan I followfollow--up PSRup PSR

36

SSC ScreeningAgeing degradation mechanism Detection

Mitigation

AMP

AMP DATABASE

Ageing assessment





37

AMP + PLiM

RPV SGSurge Line

Cable Containment

I&C

PSR

…

Next PSR

TurbineRCP




38


•• PSR (2001~2003) PSR (2001~2003) •• Development of Systematic AMPDevelopment of Systematic AMP (2006 ~ 2008) (2006 ~ 2008) •• SG ageing management program (2005 ~ 2007)SG ageing management program (2005 ~ 2007)•• RPV ageing management program (2005 ~ 2007)RPV ageing management program (2005 ~ 2007)•• Temperature online monitoring and life Temperature online monitoring and life assessment for pressurizer surge line (2006 ~ assessment for pressurizer surge line (2006 ~ 2007) 2007)

•• More More ……

Lifetime Assessment and AMP for RPV

Irradiation effects and RPV integrity analysis

♦10CFR50 App.H♦ASTM E185♦GB 2038♦GB/T 228、229

Fatigue analysis based on transient statistic

Transient records and classifying

♦Requirement of RPV specification（CLB）♦10CFR54（LR）

RTNDT increment USE decrement

P/T limits PTS Limits USE limits

♦10CFR50 App.G♦ASME XI App.G♦R.G 1.99 R.2

♦10CFR50.61♦R.G 1.154♦IAEA-EBP-WWER-08

♦10CFR50 App.G（USE > 68J）♦R.G 1.161（USE < 68J）

Surveillance test results

envelope

Transient + stress

FA

CUF

♦ASME XI App.L, E♦ASTM E 1049

Assessment for special events

AMP procedure

♦10CFR54♦NUREG1800♦NUREG1801♦NEI95-10 R.6

RPV AMP development

Existing programs and procedures

SER to LR

Residual lifetime

V&V for software

Evaluation of testing methodologies

RPV ageing management database

Modification of surveillance program

Provide to nuclear safety regulatory

RPV Assessment & AMP RPV Assessment & AMP 3.2 Activities of PLiM in NPPs 3.2 Activities of PLiM in NPPs –– Qinshan IQinshan I followfollow--up PSR RPVup PSR RPV

RPV AMP document system for Qianshan I NPP

AMP coordination

Checking, monitoring and assessment

PLAN

DO

CHECK

ACT

Ageing Mechanisms operationMitigation, maintenance

Hydrochemistry management Proc. of chemistry

monitoring management

Refrigerant leaking of PRV

Procedure of NPP

Operation monitoring and analysis management system

Proc. of operation record

management

Operation experience feedback system

transient statistic for PRV

Core monitoring management system

inspection management

Service inspection program for Qinshan1 NPP

Service inspection management system

Monitoring management

PRV material irradiation monitoring program for Qinshan1 NPP

System for alteration management of system equipment

Proc. of patrol inspection

Procedure of monitoring checking and test for Qianshan1 NPP

Assessment management

Proc. Of mitigation and maintenance

Rule of maintenance and repair for PRV

Procedure of teardown and installment of PRV closure head

Ageing management system for PRV

PRV AMP procedure

3.2 Activities of PLiM in NPPs 3.2 Activities of PLiM in NPPs –– Qinshan IQinshan I followfollow--up PSR RPV up PSR RPV

3.2 Activities of PLiM in NPPs 3.2 Activities of PLiM in NPPs –– Qinshan IQinshan I followfollow--up PSR SGup PSR SG

41

IAEA guidelines GALLs Operation

experience

1. Research program on SG ageing management2. SG ageing management project

SG Ageing Mechanism

Analysis

SG Ageing Management

Program Development

SG Ageing Management database de

velopment

SG Ageing assessment techniques

Based on information presented by RINPO Based on information presented by RINPO




42


•• During PSR, pressurizer During PSR, pressurizer surge linesurge line was identified as was identified as sensitive to thermal fatigue and furthermore, thermal sensitive to thermal fatigue and furthermore, thermal stratification effect was not taken into account. stratification effect was not taken into account.

•• An online temperature monitoring system installed during An online temperature monitoring system installed during outage in 2006.outage in 2006.

•• A detailed statistic of operational transient is carried out A detailed statistic of operational transient is carried out taking account of monitored data. taking account of monitored data.

•• A detailed fatigue analysis and lifetime assessment will be A detailed fatigue analysis and lifetime assessment will be done taking account of thermal stratification effect. done taking account of thermal stratification effect.

•• After lifetime assessment being finished, further ageing After lifetime assessment being finished, further ageing management action will be taken. management action will be taken.




43

Section 1

Section 2

Section 3

Section 4

Online Temperature Monitoring for Pressurizer Surge Line

6 0 °

点测 1

点测 2

点测 3

点测 4

点测 5

Distribution of sensors in every section




44

Temperature monitoring for surge lineTemperature monitoring for surge line




45

3.2 Activities of PLiM in NPPs 3.2 Activities of PLiM in NPPs –– DayabayDayabay followfollow--up PSR AMRup PSR AMR

Based on international experience feedback and Based on international experience feedback and according to actual status of NPP, AMR focused according to actual status of NPP, AMR focused on the following topics: on the following topics:

•• Chemical controlChemical control•• Transient statisticTransient statistic•• ISIISI•• Spare parts managementSpare parts management•• ContainmentContainment•• RPVRPV

、、SGSG、

、RCPRCP•• Power cable and I&C cablePower cable and I&C cable•• Other componentsOther components

Based on information presented by CGNPC Based on information presented by CGNPC




46


Experience feedback C&S, guidelines Actual status in NPP

Scope of review

Data collection

Summary of collection Good international practiceComparison

Review conclusionsBased on information presented by CGNPC Based on information presented by CGNPC




47


Topic AMR

Programmatic review

AM activities review

Review on sensitive SSCs

� Policy� Screening � Sensitive SSC

list � Data collection

and record keeping

� ISI� Transient

statistic� Chemical

control� Spare parts

Sensitive SSCsfeedback from outside� RPV� Containment� SG� RCP� Cable

Sensitive SSCsfeedback from inside�Emergency DE�Class 1 MOV�Motor�Transformer�battery�I&C





48


3 periods for ageing management and PLiM: 3 periods for ageing management and PLiM: •• First 20 years: AMP, database, tendency and First 20 years: AMP, database, tendency and lifetime lifetime prediction prediction model, monitoring, mitigation model, monitoring, mitigation measuresmeasures

•• 2020--30 years: tendency and lifetime prediction, 30 years: tendency and lifetime prediction, lifetime extension preparationlifetime extension preparation

•• 3030--40 years: supplement and update documents 40 years: supplement and update documents according to assessment resultsaccording to assessment results





49


Currently work covered: Currently work covered: ①① RI AMP / RPV AMP / SG AMPRI AMP / RPV AMP / SG AMP②② PWSCC for 600 materialsPWSCC for 600 materials③③ Thermal ageing for cast stainless steelThermal ageing for cast stainless steel④④ FAC countermeasuresFAC countermeasures⑤⑤ Cable ageing managementCable ageing management⑥⑥ Thermal fatigue for auxiliary piping of primary loopThermal fatigue for auxiliary piping of primary loop⑦⑦ ByBy--pass piping vibrationpass piping vibration⑧⑧ Thermal fatigue for primary loop pipingThermal fatigue for primary loop piping⑨⑨ Containment AMPContainment AMP⑩⑩ Transformer AMP /Generator AMPTransformer AMP /Generator AMP





50

3.2 Activities of PLiM in NPPs 3.2 Activities of PLiM in NPPs –– TQNPCTQNPC

A CANDU two units started operation in 2002 and 2003A CANDU two units started operation in 2002 and 2003•• The owner TQNPC initiated ageing management at very The owner TQNPC initiated ageing management at very

beginning of the plant operation. beginning of the plant operation. •• A systematic screening for AMP A systematic screening for AMP SSCsSSCs was carried out in was carried out in

assistance of its technical support SNERDI (2003~2004) assistance of its technical support SNERDI (2003~2004) �� Fuel channel, reactor assembly, SG, pressurizer, feeder, Fuel channel, reactor assembly, SG, pressurizer, feeder,

primary piping, reactor collector piping, HTP, emergency primary piping, reactor collector piping, HTP, emergency cooling pump, heavy water isolation valve, cable, cooling pump, heavy water isolation valve, cable, containmentcontainment…… were selected as AM itemswere selected as AM items

•• Detailed ageing mechanism analysis for AM components Detailed ageing mechanism analysis for AM components and structures is under way. After that, component based and structures is under way. After that, component based AMP and database will be developed.AMP and database will be developed.

51

Also including pressurizer, primary pipe, header, HTPs, ECC pumps and heavy water isolate valves

Cable

SG

Fuel channel Feeder Containment

Reactor assembly

3.2 Activities of PLiM in NPPs 3.2 Activities of PLiM in NPPs –– TQNPC TQNPC Screening result

52

3.3 PLiM R&D to support NPPs3.3 PLiM R&D to support NPPsUnderstand, Apply and Develop Relevant Codes and Standards�ASME series ASME-B&PV III，ASME-B&PV XI，ASME-O&M Code, S/G�USNRC related, 10CFR50、54、51， NEI, RG1.199、1.154、1.188、NUREG 1800�IAEA series AM guidesSafety series, technical series and review seriesEJ/T 1033-96（Anti-fast fracture）, �EJ/T 918-94（P-T limits）Compile related technical codes and standards

Inspection and Monitoring Techniques�Researches on methodology and apparatus development of online fatigue monitoring system�Researches on online thermal stratification monitoring method�Researches on in-service NDE and assessment techniques for dissimilar metals�Researches and applications on pre- & in-service monitoring system for rotating equipment and piping�Researches on LPMS �Researches on NDE techniques for cables�FAC countermeasures and piping thiningdetection techniques

Researches on Material Properties and Aging Degradation Mechanism�Fatigue properties of austenitic & low-alloy SS�Reliability of domestic 508-Ⅲ steel�Surveillance and lifetime assessment technology for RPV & RI�Researches on material properties and structural integrity for SG tubes�Researches on pres. Boundary materials�Develop database of comp. materials�Property researches for Class 1E cables�Researches on aging degradation mechanism and their measures for comps.�Researches on corrosion protection for water system piping or off-shore NPPs

Dispose and Develop Tool Software�ANSYS:General purpose FEA program�MARC:Fracture mechanics（J-integral, ASME XI）�PATRAN:FEM common platform�FATIGUE:Fatigue fracture(da/dN)�CFX:CFD analysis�SHOCK:PTS analysis based on ASME code]�PFMAC:Probability fracture mechnics analysis�specific AM software(e.g.,CHECWORKS, COMSY,etc.)

Establishment of Assessment and AM Methodology�Structural integrity analysis for RPV under PTS�Assessment methodology for key components with flaws detected by NDE�Reliability analysis and prediction techniques for nuclear piping under abnormal and abrupt events�Integrity analysis for surge line under thermal stratification.�Probability fracture mechanics analysis method�Modification of P-T limits based on irradiation surveillance�Ageing evaluation for containment.�Pre-and in-service condition assessment for safety related rotating equipment in NPPs�Researches on failure, diagnosis analyses and design improvement for NPP components�Aging assessment and database for class 1E cables�Methodology on AMP development for NPPs

Equipment Assessment and AM for Operational NPPs�PSR (AM, EQ), RPV mid-term assessment, AMP development, surge line for Qinshan-Ⅰ�Ageing mechanism analysis for critical equipment, PSR preparation for TQNPC, CANDU�Operational condition assessment, AMP development for C1�Vibration qualification of rotating equipment and piping for Q1, Q2, Q3 and C1�Vibration mechanism analysis and site treatment for Tianwan VVER1000 NPP

Main Technical Main Technical Supporters to NPPsSupporters to NPPs

BINE/CNNCBINE/CNNC

CIAE/CNNCCIAE/CNNC

SNERDI/SNPTCSNERDI/SNPTC

SNPI/CGNPCSNPI/CGNPC

RINPO/CNNCRINPO/CNNC

NPIC/CNNCNPIC/CNNC




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3.4 IAEA support in PLiM in China

In recent years, IAEA provides lots of supports in In recent years, IAEA provides lots of supports in promoting and spreading of AM/PLiM concepts promoting and spreading of AM/PLiM concepts and activities in China, especially viaand activities in China, especially via

•• TC projects, i.e. CPR 4/026, Development of AMP in TC projects, i.e. CPR 4/026, Development of AMP in NPPsNPPs

•• EBP projects on related topics, mainly conducted by EBP projects on related topics, mainly conducted by NPPsNPPs

•• Taking part in IAEA TWGTaking part in IAEA TWG--LMNPPLMNPP•• Taking part in coordination research projects, such as Taking part in coordination research projects, such as CRPCRP--9, Benchmark and good practice handbook for 9, Benchmark and good practice handbook for RPV integrity under PTSRPV integrity under PTS




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3.4 IAEA support in PLiM in ChinaExample: TC 4/026 Development of AMP for NPPsExample: TC 4/026 Development of AMP for NPPs•• 17 person17 person--time expert missionstime expert missions•• 11 person11 person--time SV or FE or training coursetime SV or FE or training course•• 8 Chinese organizations benefit from the TC8 Chinese organizations benefit from the TCTopics included:Topics included:�� Integrity analysis for pressure boundary componentsIntegrity analysis for pressure boundary components�� Methodology for AMP developmentMethodology for AMP development�� FAC countermeasuresFAC countermeasures�� RPV life assessment for WWERRPV life assessment for WWER�� Cable ageing detection and managementCable ageing detection and management




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4. Prospective activities of PLiM in ChinaNeedsNeeds��More new NPPsMore new NPPs��Some of NPPs agedSome of NPPs aged��MultiMulti--type unitstype unitsWaysWays��Digest inter. C&S plus Digest inter. C&S plus domestic practicedomestic practice��R&D supportR&D support��Cooperation of Cooperation of international related international related partiesparties

1. Localization 1. Localization and continuous and continuous improvement of improvement of nuclear safety nuclear safety regulatory system regulatory system for AM and PLiMfor AM and PLiM




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4. Prospective activities of PLiM in ChinaNeedsNeeds�� More than 50% design life More than 50% design life passed for Qinshanpassed for Qinshan--II�� LR policy should be set upLR policy should be set upWaysWays�� IAEA requirements + IAEA requirements + practicabilitypracticability�� Establishment of technical Establishment of technical foundation for LR and LTOfoundation for LR and LTO�� Demonstrational function of Demonstrational function of prototype unit, Qinshanprototype unit, Qinshan--II

2. Establishment 2. Establishment Chinese license Chinese license renewal and renewal and LTO systemLTO system




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4. Prospective activities of PLiM in ChinaNeedsNeeds�� IAEA DS382 requires AM IAEA DS382 requires AM being considered in FASRbeing considered in FASR�� how to do as more new how to do as more new NPPs being designed in NPPs being designed in China next 20 years China next 20 years WaysWays�� Supplementary Regulatory Supplementary Regulatory requirements for designrequirements for design�� Technical guidance for Technical guidance for implementationimplementation

3. Practices for 3. Practices for AM to be AM to be considered at considered at design stagedesign stage




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4. Prospective activities of PLiM in ChinaNeedsNeedsSignificance and sensitivity of critical secondary loop equipment to economy of NPPsNot sufficiently studied comparing with those in primary loopWaysWaysRegulatory requirements cover to secondary loopR&D with more cooperation with conventional power plants

4. Extending 4. Extending attention to attention to secondary loop secondary loop equipmentequipment




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4. Prospective activities of PLiM in ChinaNeedsNeeds�� Limited resource vs. large Limited resource vs. large amount of amount of SCCsSCCs�� Screening based on PSA Screening based on PSA achievementachievementWaysWays�� AM regulatory requirements AM regulatory requirements reflect riskreflect risk--informed informed technologytechnology�� PSA personnel involve in PSA personnel involve in AM activitiesAM activities

5. Application 5. Application of riskof risk--informed informed technologytechnology




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5. Summary and suggestion•• PLiM is a fundamental aspect to guarantee safe and PLiM is a fundamental aspect to guarantee safe and economic operation of NPPs. It is indispensable for the economic operation of NPPs. It is indispensable for the sustainable developmentsustainable development of nuclear powerof nuclear power

•• Many efforts in ageing management and lifetime Many efforts in ageing management and lifetime assessment for NPPs have been made by related assessment for NPPs have been made by related organizations in China, however, much more work should organizations in China, however, much more work should be done in the futurebe done in the future

•• International cooperation acts as a very important role to International cooperation acts as a very important role to promote PLiM related R&D and practice in Chinese NPPspromote PLiM related R&D and practice in Chinese NPPs. . It should be encouraged and strengthened in many It should be encouraged and strengthened in many aspects in the futureaspects in the future

•• Prospective PLiM activities on 5 aspects are suggestedProspective PLiM activities on 5 aspects are suggested

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5. Summary and Suggestionto Setup an IAEA cooperation platform in China①① Human resource trainingHuman resource trainingTwo levels of human resource training. Two levels of human resource training. �� Research and high level managementResearch and high level management�� Implementation personnel; Implementation personnel; Both Chinese and foreign engineers being trained in Both Chinese and foreign engineers being trained in parallel parallel

②② Human resource sharing Human resource sharing �� Challenge of shortage of human resourceChallenge of shortage of human resource�� Establishment of International Expert Pool or BankEstablishment of International Expert Pool or BankCurrently, China needs more foreign experts, In the future, Currently, China needs more foreign experts, In the future, Chinese experts will do more services internationallyChinese experts will do more services internationally……




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③③ Collaborative research and developmentCollaborative research and development�� Select typical topics, such as PTS analysis, Select typical topics, such as PTS analysis,

RiskRisk--Informed Technology and its Informed Technology and its implementationimplementation

�� More involvement of Chinese organizations to More involvement of Chinese organizations to international collaborative research projects, international collaborative research projects, such as those organized by IAEA, EC, such as those organized by IAEA, EC, OECD/NEA, etcOECD/NEA, etc……

�� Membership of industrial R&D institution, such Membership of industrial R&D institution, such as EPRI, TWI, etcas EPRI, TWI, etc……

5. Summary and Suggestionto Setup an IAEA cooperation platform in China




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6. Acknowledgement

•• Gratitude to IAEA, especially to Mr. Yuri Sokolov, for Gratitude to IAEA, especially to Mr. Yuri Sokolov, for his continuous support for implementation of PLiM in his continuous support for implementation of PLiM in China and encouraging China to host the Second PLiM China and encouraging China to host the Second PLiM Symposium. Symposium.

•• Special thanks to Mr. KSpecial thanks to Mr. K--S Kang, Mr. T. Inagaki S Kang, Mr. T. Inagaki and and our Douyikang for their untiring efforts and fruitfully our Douyikang for their untiring efforts and fruitfully hard working for spreading AM concepts and hard working for spreading AM concepts and promoting its practice in China in the past 5 years.promoting its practice in China in the past 5 years.

•• Thanks to CNNC/Qinshan Nuclear Power Base for Thanks to CNNC/Qinshan Nuclear Power Base for successful arrangement successful arrangement




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Thank for your attention !

Documents

Zheng Mingguang - IAEA · • Yangjiang NPP • Dayabay site DayaBay 2 ×900 MW PWR, 1994 Ling’ao2×1000MW PWR 2002 Ling’ao-II 2 ×1000MW Sanmen NPP 2 units of AP1000 • Qinshan