Zhao Weidong June, 2010 Toronto, Canada

Transcription

1 Zhao Weidong June, 2010 Toronto, Canada

2 Contents 1 Overview of TQNPC 2 Experiences of In-Service Inspection 2.1 Applicable Documents 2.2 Critical Components Inspections 3 Overview of Main ISI Service Providers

3 1. Overview of TQNPC

4 1. Overview of TQNPC Current Status of NPPs in Mainland China Seq. Project Reactor Power Status 1 Qinshan Phase I PWR 1 300MWe 2 Qinshan Phase II PWR 2 600MWe 3 Qinshan Phase III (TQNPC) CANDU 2 700MWe 4 Tian Wan VVER MWe 5 Daya Bay PWR 2 900MWe 6 Ling Ao Phase I PWR 2 900MWe 7 Qinshan Phase I-Extension PWR MWe 8 Qinshan Phase II-Extension PWR 2 600MWe 9 Sanmen PWR MWe 10 Fuqing PWR MWe 11 Ling Ao Phase II PWR 2 900MWe 12 Hainan Changjiang PWR 2 650MWe 13 Ningde PWR MWe 14 Taishan PWR MWe 15 Yangjiang PWR MWe 16 Haiyang PWR MWe Operation (11 Units) Construction (20 Units)

5 1. Overview of TQNPC TQNPC --Third Qinshan Nuclear Power Company Ltd. was established on January 31 st, 1997 Qinshan CANDU Units

6 1. Overview of TQNPC Qinshan Phase II (PWR) Qinshan Phase I (PWR) Qinshan Phase III (CANDU)

7 1. Overview of TQNPC

8 1. Overview of TQNPC Reactor Type: CANDU-6 Capacity: MWe Design Life of NPP: 40 Years Activity Unit 1 Unit 2 First Concrete June 8, 1998 Sept. 25,1998 Fuel Loading Jul. 18, 2002 Mar. 28, 2003 First Criticality Sep. 21, 2002 June 28, 2003 Commercial Operation Dec. 31,2002 (43 days ahead) July 24,2003 (112 days ahead)

9 WANO Performance Indicator Data Elements 2009 Indicators 2009 Unit 1 Unit 2 Unit Capability Factor (%) Unplanned Capability Loss Factor (%) 0 0 Forced Loss Rate (%) 0 0 Unplanned Automatic Scrams per 7,000 Hrs Critical 0 0 Safety Systems Performance HPECC 0 0 Auxiliary Water Feed System Emergency AC Power Feul Reliability (Bq/g) Chemistry Performance Collective Radiation Exposure (Man-Sv) Industry Safety Accident Rate(Both Units) 0 Contractor Industry Safety Accident Rate (Both Units) 0.09 Grid-Related Loss Factor

10 2. Experiences of In-service Inspections

11 2.1 Applicable Documents Laws and Acts 2. Experiences of ISI Inspections HAF103 Safety of Nuclear Power Plants Operation HAF602 Non-destructive Testing Qualification and Certification of Personnel HAD103/07 In-service Inspection of Nuclear Power Plants Codes and Standards CAN/CSA-N285.5-M90 Periodic Inspection of CANDU Nuclear Power Plant Containment Components CAN/CSA-N Periodic Inspection of CANDU Nuclear Power Plant Components ASME-XI(ISI)/V(NDE)-1995

12 2. Experiences of ISI Inspections 2.1 Applicable Documents In-service Inspection Program STP-TI01, prepared by TQNPC and accepted by NNSA (regulator). All ISI activities must satisfy this Program This ISI Program is produced mainly based on CSA N and CSA N285.5-M90 Presently TQNPC is considering to update the ISI program as per the requirements of CSA N in the next few years

13 2. Experiences of ISI Inspections 2.2 Critical Components Inspections Summary of Qinshan Fuel Channels Unit# Unit#1 Unit#2 PT Material Zr-2.5%Nb Zr-2.5%Nb Source of Ingot Russia Russia ID/Wall THK. (mm) 103.4/ /4.19 Spacer Type/Quantity Inconel X-750 Tight / 4 RJ Type ZCRJ ZCRJ Commercial Operation Inconel X-750 Tight / 4 Dec. 31,2002 July 24,2003

14 2. Experiences of ISI Inspections History of FC Related Major Projects Unit No. Unit# 1 Unit# 2 Baseline Inspection Dec 2005 May 2005 Replacement & Repair Grayloc Refurbishments Dec 2005 June 2008 N/A N/A 1st In-service Inspection May 2010 Dec 2009

15 2. Experiences of ISI Inspections Fuel Channels Dimensional & Volumetric Inspection Summary Unit# Year Inspection Channels Governing Doc. Tooling Baseline 13 CSA AFCIS st ISI 10 CSA /05 AFCIS Baseline 10 CSA AFCIS st ISI 10 CSA /05 AFCIS

16 Pressure Tubes Wallthickness 2. Experiences of ISI Inspections

17 Pressure Tubes Inside Diameter 2. Experiences of ISI Inspections

18 Pressure Tubes Sag 2. Experiences of ISI Inspections

19 2. Experiences of ISI Inspections Fuel Channels Heq Measurement Summary Unit# Year Measure. Channels Governing Doc. Tooling Baseline 10 CSA N / Baseline 10 CSA N /05 Scrape Scrape

20 2. Experiences of ISI Inspections Feeder Piping Inspections Feeder pipe thickness measurement 1) 1st and 2nd bends Unit Inaugural ISI Interval Tooling 1 40 (34 Outlets) 40 (34 Outlets) 4.5 Years (3 outages) Templates (UT) 2 All Outlets & 6 Inlets 40 (34 Outlets) 4.5 Years (3 outages)

21 2. Experiences of ISI Inspections Feeder Piping Inspections Uni t 2) Hub area wall-thickness measurements Inaugural In-service Interval of ISI 1 N/A 10 (All Outlets) 4.5 Years (3 outages) 2 N/A 10 (All Outlets) 4.5 Years (3 outages) Visual inspection on feeder pipes, pipe hangers & supports Interval: 3 years

22 2. Experiences of ISI Inspections Steam Generator tubing inspection Material of S/G major parts No PART MATERIAL 1 U-Tube Incoloy Primary Head SA Divider Plate Alloy Tubesheet SA Tubesheet Cladding Alloy Thick Shell SA Tube Supports Bar SA-240 type 410S 8 Secondary Shell SA Steam Drum Internals SA-500

23 2. Experiences of ISI Inspections Steam Generator tubing inspection Full length inspection with eddy current technology Unit Inaugural /SG (25.2%) In-service Inspection 1 st ~4 th Outage Since 5 th Outage Quantity Interval Quantity Interval 50% 3 Years 40% 6 Years (2 Outages) (4 Outages) 2 890/SG (25.2%) 50% 3 Years (2 Outages) 40% 6 Years (4 Outages) Note: 3530 U-tubes per SG, and 4 SGs per Unit at TQNPC

24 2. Experiences of ISI Inspections Steam Generator tubing inspection What we mainly found and how we dealt with the findings during the past inspections: Three tubes were plugged because of the following causes: ---One had a restriction inside the tube near the tubesheet, the probe couldn t get through; ---The other two had indications (about 35% of the wall thickness decrease) found in the outside wall, due to fretting of foreign objects on the secondary side. And those foreign objects had been taken out. ---The rest are all acceptable according to the acceptance criteria.

25 2. Experiences of ISI Inspections 2.3 Dissimilar Metal Welds Inspections Summary of Dissimilar Welds Inspections NDE Technology Developed for inspections Repaired by Welding

26 3. Overview of Main ISI Service Providers

27 3. Overview of Main ISI Service Providers China Nuclear Power Operation Technical Company (CNPO) Re-organized from the predecessor named RINPO (Research Institute of Nuclear Power Operation) in September 2007, located in Wuhan, China Main Contractor of ISI in China Qualified by NNSA for in-service inspection/non-destructive inspection for nuclear facilities, including Class1, 2, 3 nuclear components Capabilities -- NDT for reactor pressure vessel (RPV) and relative components -- NDT for SG PRZ Piping and etc.

28 3. Overview of Main ISI Service Providers State Nuclear Power Plant Service Company (SNPSC) Re-organized from the predecessor named NNC (Nuclear Non-destructive Test Center) in May 2008, located in Shanghai, China Manual UT and ET qualified by NNSA for nuclear Class1, 2, 3 nuclear components Inspection Equipment --Lower CRDM Omega Welds Inspection System --UT Peeling Detection system for Hydrogenation Reactor --UT Tandem Inspection System --UT Inspection System for Furnace Tubes

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