Qinshan CANDU Nuclear Power Plant - IAEA

iaea.org

Qinshan CANDU Nuclear Power Plant - IAEA

IAEA Workshop

Charlotte, North Carolina

August 19-20, 2010

Case Study:

Past and Recent Experiences from AECL

Qinshan CANDU Nuclear Power Plant

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A. Khan

Manager, g , EC6 Plant Layout, y ,

Containment Design & Constructability


Scope of Presentation

Qinshan CANDU Nuclear Power Plant

�S �Salient li t Contract C t t DDetails t il and d CConstruction t ti RResponsibilities ibiliti

�Challenges

�Construction Approach

�Important Construction Decisions

�Major Issues During Construction

�Site �Site Quality Assurance (QA)

�Major Achievements

�Reasons for Success of Project

�S �Summary and dCConclusions l i

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�2 Unit 728 MWe Gross Plant

Qinshan, Zhejiang Province,

PR of China

�Cooling water provided from

HHangzhou h BBay,

(Yellow Sea)

�International Project with

fnancing from China, Canada,

Japan and USA

Qinshan CANDU Nuclear Power Plant

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Salient Contract Details and Construction

Responsibilities

�In-Service Unit 1, 72 months from start of excavation (February 12, 1997-February

11, 2003)

�Unit 2, 9 months later

�� CContract t t iis bbetween t Thi Third d Qi Qinshan h Nuclear N l Power P Company(TQNPC)-AECL

C (TQNPC) AECL

�TQNPC Responsibilities:

� PPrepare Site Si

� Prepare Permanent Site Facilities

� Manage Balance of Plant (BOP) construction

AECL is General Contractor and is completely responsible for:

� Overall Project Management

� Manage Nuclear Steam Plant (NSP) Construction at Site

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Salient Contract Details-Continued

� Bechtel is responsible for BOP Engineering and provides technical assistance at site for BOP

construction

� Hitachi is responsible for T/G Contract and Accessories

� Construction contractors are responsible for :

� NSP construction

� BOP construction

� Responsible for preparing Level 3 Schedules

�� Quality Control of all construction activities

� Major Contractors:

� CNI-23

� Huaxing (HXCC)

� CNI-22

� Zhejiang Thermal Power Company (ZTPC)

� TQNPC is responsible for all payments

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Challenges

� Very restricted site. Small peninsula on which plant is to be placed.

� Required considerable reclamation from sea to locate full plant

� Required considerable detailed planning in early stages of construction

� Very high silt content, divers of no use

� Construction contractors have no previous CANDU construction experience, but have

experience of nuclear power plant construction

� Cultural differences/sensitivities

� Maximization of localization

� 1 st time use of open top method of construction on CANDU 6 construction

� 1st � 1 time use of modularization on CANDU 6 construction

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Construction Approach

� Quality Assurance (QA): Follow Canadian QA Standards on construction

of nuclear power plants. AECL has followed this approach on other

international plant in Korea, Argentina, and Romania

� Divide NSP and BOP construction and specify different contractors for

each area

� Excavation contract given to one company for entire site

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Construction Approach (Continued)

Major Construction Contracts:

� Site Excavation (HXCC)

� NSP Civil Construction (HXCC)

� NSP Mechanical/Electrical Installation (CNI-23)

� BOP Civil Construction (CNI-22)

� BOP Mechanical/Electrical Installation (ZTPC)

� Piping Fabrication (CNI-23)

� Supply of Concrete (CNI-22)

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Important Construction Decisions

� Dedicated Concrete Batch Plant at Site

� Setting up of Welding Procedures and Welder Training Program very

early y in Construction Phase

� Use of Nuclear Electrodes only at Site

� AECL Sole Source for Procurement of NSP Material

� Localization of HVAC, Electrical works

� Upgrading pg g of Very y Heavy y Lift ( (VHL) ) Crane for Open p Top p Method of

Construction

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Major Issues During Construction

� Coordination between Construction Contractors

� Hot Weather Concreting

� Structural Steel, Unavailability of Heavier Sctions

�� Lack of fS Shop Drawing i Detailers i in i China C i

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Site Quality Assurance (QA)

� AECL set QA requirements for all construction

� Set up Non-Conformance Report (NCR) Process to control work including

issuing Stop Work Orders for major NCRs and Field Change Request

Process to control design changes at site

� TQNPC had own Quality y Surveillance Team

� AECL had own Quality Surveillance Branch

� Construction Contractors responsible for Quality Control

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Major Achievements

� Shortest construction of any NPP in China from 1st concrete to In-Service

(54 months)

� Shortest duration to construct perimeter wall (14 days)

� Best integrated leak rate of all CANDU 6 nuclear power plants

� 70 heavy lifts of equipment with the VHL crane

� Steam S e ge generator e o installed s ed in 8 hours ou s

� Fuel channels installed in 64 days

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Reasons for Success of Project

� Client/Owner was fully 100% behind completion of project and gave full

support to AECL and its sub-contractors

� Excellent teamwork between all participants

p p

� AECL had available manpower resources with extensive experience of

construction and engineering on overseas projects

� Use of Open Top Method of Construction

� Use of Modularization

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Summary and Conclusions

�AECL CANDU 6 built to shortest construction schedule of any NPP

in China even though it was first CANDU

�Experience and achievements of Chinese contractors show that with

continued use of Open Top Method of Construction, Construction earlier design

and procurement, and some added construction modifications,

construction of the CANDU 6 which is an existing design and proven

technology, can be shortened to a 66 month project schedule from

CED.


Qinshan Nuclear Power Plant


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