UNRESTRICTED / ILLIMITÉ CANDU Design and Equipment Overview AECL CANDU Supply Chain Forum Saskatoon November 30, 2010 Ian love Principal Advisor to Vice President Product Development
Nov 08, 2014
UNRESTRICTED / ILLIMITÉ
CANDU Design and Equipment Overview
AECL CANDU Supply Chain ForumSaskatoonNovember 30, 2010
Ian lovePrincipal Advisor to Vice PresidentProduct Development
2
CANDU Power Reactor
Qinshan Phase III, China
CANFLEX Fuel Bundle
CANDU Reactor Face
CANDU Plant Design Schematic
3PROTECTED - SENSITIVE / PROTÉGÉ - DÉLICAT
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 4
CANDU 6
• 700 MWe Class
• Eleven Reactors in Service
• Operated by six utilities on four continents
• Fleet Life-time Capacity Factor - 89%
Enhanced CANDU 6 (EC6) Design
Overview
• 740 MW(e) Classic CANDU reactor
• Natural Uranium (NU) Fuel
• Heavy water coolant and moderator
• 60-year plant life
Strengths
• Only proven medium sized reactor
• Proven high performer
• Outstanding construction record
• Unique fuel cycle capabilities
Two-unit EC6 plant and Calandria face
5AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL
EC6 Reference Plant Layout
AECL-OFFICIAL USE ONLY/A USAGE EXCLUSIF-EACL 6
Reactor BuildingService Building
Turbine Building
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 7
MAJOR PLANT BUILDINGS
• NSP (Nuclear Steam Plant)– the Reactor Building (houses NSSS) and the Service
Building (houses BNSP)
• BOP (Balance of Plant) –Conventional Systems (steam, water, electrical) and the
Turbine/Generator are housed in the Turbine and Auxiliary Buildings
Reactor Building
Service Building
Turbine Building
• Plant Layout is based on 3 main parts:
EC6 Major NSP Systems & Equipment
–Plant Layout–Reactor Equipment–Moderator Equipment–Heat Transport System/Equipment–Fuel–Fuel Handling System/Equipment–Major NSP Heat Exchangers–Major NSP Pumps–Major Pressure Vessels & Tanks–Major NSP Valves–Civil Equipment & Modules
PROTECTED - SENSITIVE / PROTÉGÉ - DÉLICAT 8
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 9
Codes and Standards
• The Canadian Standards Association (CSA) N285.0 codes specifies requirements for manufacturing of CANDU Nuclear Power Plants pressure-retaining systems and components in Canada.
o CSA N285.0 Class 1 ASME Section III Class 1
o CSA N285.0 Class 2 ASME Section III Class 2
o CSA N285.0 Class 3 ASME Section III Class 3
o CSA N285.0 Class 6 ASME Section VIII / ANSI B51 Piping
• The supplier’s quality assurance (QA) program needs to meet the requirements of ISO 9001-2000. The suppliers shall also comply with the other quality assurance requirements specified in the equipment tender documents.
Major NSP Components / Equipment
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 10
Civil• Structural Steel – CSA Standard• Stairwells – CSA Standard• Platforms - CSA Standard
Mechanical Equipment• Calandria - Nuclear• Fuel Channels - Nuclear• Reactivity Mechanisms - Nuclear• Fuelling Machines – Nuclear/Non Nuclear• FH Transfer Equipment - Nuclear/Non Nuclear
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 11
Major NSP Component / Equipment
Process Equipment• Heat Exchangers – Nuclear/Non Nuclear• Pumps - Nuclear/Non Nuclear• Pressure Vessels – Nuclear/Non Nuclear• Piping & Fittings - Nuclear/Non Nuclear• Valves - Nuclear/Non Nuclear
Electrical & I&C• Electrical & Control Cables – IEEE/CSA Standards• Cable Trays - IEEE/CSA Standards• Pressure/Temperature Instrumentation - IEEE/CSA Standards• Process Controllers etc. - IEEE/CSA StandardsModules• Civil Modules• Equipment and Piping Modules
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 12
CANDU 6 REACTOR ASSEMBLY
• Low pressure and low temperature Calandria houses reactor assembly
• Calandria is set in a light water-filled, concrete, shielding vault
• Fuel channels and moderator are contained in Calandria
• End-shields are filled with light water and steel balls
1 CALANDRIA2 CALANDRIA END SHIELD3 SHUT-OFF AND CONTROL RODS4 POISON INJECTION5 FUEL CHANNEL ASSEMBLIES6 FEEDER PIPES7 VAULT
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 13
EC6 MAJOR REACTOR EQUIPMENT LIST
Description Qty Code Class
Material Size
Calandria Shell / End Shield Assemblies
1/2 CSA N285.0 Class 3
SA240SS 304L Plate
7.82m L x 7.65m OD x 28.6mm Thk
Pressure Tube 380 CSA N285.0 Zr-2.5wt%Nb alloy 103.4mm ID x 4.9mm Thk
Calandria Tubes 380 N285.0 & ASME Sect III
Zirconium Alloy Grade R60804
131.9mm ID x 1.5mm Thk
End Fitting Assembly 760 CSA N285.0 Modified Type SS 403
2.36m L
Reactivity Mechanism Deck
1 CSA N285.0 Class 6
CS top & bottom filled with Concrete
6.8m L x 5.9m W x 1.2m Depth
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 14
CALANDRIA / FUEL CHANNELS
Moderator System
Reactor Coolant
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 15
CANDU 6 Calandria Assembly
Calandria Shell
Welding End Shield to Shell
End Shield
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 16
CANDU 6 FUEL CHANNEL ASSEMBLY
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 17
CANDU 6 End Fitting
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 18
CANDU 6 Pressure Tubes
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 19
CANDU 6 Calandria Tubes
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 20
CANDU 6 REACTIVITY DECK
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 21
CANDU 6 REACTIVITY DECK
22
Moderator Heat Exchanger
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 23
HEAT TRANSPORT SYSTEM (Reactor Coolant System)
• EC6 HTS:–2 loops, carbon
steel –4 coolant pumps, –4 steam generators
• Design: –outlet pressure 10
MPa,–Outlet temperature
3160C
• All HTS equipment specified as Class 1
Steam Generators
HT Pumps
Headers
Feeders
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 24
EC6 Major HTS EquipmentDescription Qty Code
ClassMaterial Size
Steam Generators 4 Class 1 Tube – Incoloy 800Shell – CS
508 MW(th) ea.
HT Pumps – Vertical, centrifugal, single suction, double discharge
4 Class 1 Pump Casing – CSOthers: See TS
2228 L/s @ 215 m
HT Pump Motor – AC, Vertical, squirrel cage induction
4 Class 1 See TS 6.7 MWe
Reactor Inlet/Outlet Headers 4 Class 1 ASME SA106 Gr B 370 mm ID
Feeders 760 Class 1 ASME SA106 Gr B 1 ½ “ to 3” Sch 80
HT Piping TBC Class 1 ASME SA106 Gr B !8” and 20” Sch 100
25
Steam Generator Lift
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 26
Feeder Header Module
27
Feeders – in shop
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 28
Description Qty Type Code Class Size
Moderator Heat Exchangers 2 Vertical U Tube-in-Shell
Class 3 & 6 50 MW(th)
HT Purification Interchanger 1 Tube-in-Shell Class 1 50 MW(th)
HT Purification Cooler 1 Tube-in-Shell Class 3 & 6 12.8 MW(th)
Degasser Cooler 1 Horizontal U Tube-in-Shell
Class 6 2.4 MW(th) (Normal) / 11.8 MW (th) (HT Degassing
ECC Heat Exchangers 4 Shell & Tube Class 2 & 6
EC6 Major NSP Heat Exchangers
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 29
Description Qty Type Code Class
Size
Moderator Pumps 2 Vertical, single stage double-suction centrifugal
Class 3 Flow – 1588L/sHead – 55m
Moderator Pump Motor 2 3-Phase, squirrel cage induction motor
Class IV 60Hz, 4KV, 1200KW, 890RPM
HT Pressurizing Pumps 2 Multi-stage horizontal centrifugal
Class 6 Flow – 16.7L/sHead – 1650m
Shield Cooling Pumps 2 Centrifugal Class 2 Flow – 400L/sHead –63m
ECC Pumps 4 Vertical, Centrifugal Class 2 TBC
RCW Water Pumps 4 Horizontal, centrifugal Split Case
Class 6 Flow – 720L/sHead – 61m
EC6 Major NSP Pumps
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 30
Description Qty Type Code Class
Size
Main Steam Isolation Valves (MV)
4 600 lb Gate Class 2 24”
Main Steam Relief Valves (RV)
12 600 lb Flanged– Spring Loaded,Pneumatic Actuator
Class 2 Inlet 10”Outlet 14”
Power Operated Relief Valves (PCV)
4 600 lb Globe, Pneumatic
Class 2 TBC
Valves >4,600 Gate, Globe, Ball, Butterfly, Check, Relief etc.
Class 1, 2, 3 & 6
Various¼” to 36”
Control Valves >1,000 FCV, PCV, PRV, PV, LCV, TCV
Class 1, 2, 3 & 6
Various
EC6 Major NSP Valves
31
Typical Valve Station Module
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 32
CANDU 6 SPENT FUEL POOL
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 33
SPENT FUEL BASKET / STORAGE FRAME
•28 Baskets / Storage Frame
•78 Storage Frames (13x6 Array) in Spent Fuel Storage Bay
•36 bundles / basket
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 34
SPENT FUEL DRY STORAGE MACSTOR – 200
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 35
EC6 Balance of Plant
Balance of Plant (BOP) equipment is located in Turbine Building & Auxiliary Structures. It includes:
• Turbine Generator Set & Condenser• Main Feedwater / Main Steam Systems outside of RB• Feedwater Heating & Condensing Systems • Electrical Systems• Recirculating Cooling Water / Raw Service Water
Systems• Various Auxiliary Systems & Equipment
Code Class – CSA N285.0 Class 6 Code – ASME Section VIII / ANSI B51 Piping (Non Nuclear)
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 36
QINSHAN TURBINE GENERATOR
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 37
FEEDWATER AND MAIN STEAM SYSTEM
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 38
FEEDWATER HEATING / CONDENSING SYSTEM
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 39
ELECTRIC POWER SYSTEM
• For power production related functions–On start-up, station services fed from Station Service
Transformers (SST).–After synchronization some loads supplied by Unit
Service Transformers (UST).
• For station support functions–4 power classes (class IV, class III, class II, and class I)–4 class III diesel generators, two per unit–4 x100% EPS diesel generators - two per unit (for
Group 2 loads)
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 40
CANDU ELECTRIC POWER SYSTEM
CANDU 6 CONSTRUCTION
PROTECTED - SENSITIVE / PROTÉGÉ - DÉLICAT 41
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL
Qinshan Project Lifecycle Phases
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 43
Qinshan Construction Method
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 44
View of Qinshan Site During Construction
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 45
Calandria being moved into the RB
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 46
Qinshan - Dousing System Modules
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 47
Modularization Construction Templates at Qinshan
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 48
Open Top / Partially Modular Construction – Qinshan
• Logic improvements• Steam generators installed in
eight hours• One month saved not waiting for
inner dome formwork• Dousing system steelwork &
piping installed in prefabricated segments
Unit 1: 6 weeks early
Unit 2: 4 months early
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 49
Completed Qinshan Site – 2 Unit CANDU 6
Darlington RefurbishmentFour unit CANDU plant – 3400 MW
• Replace 4 x 480 pressure tubes and feeders• Turbine-generator set upgrades• Replace / upgrade various reactor components• Refurbishment waste management• Project infrastructure facilities
–civil, mechanical, electrical systems
• Ontario Power Generation and other major contractors will let many contracts for equipment and service packages
PROTECTED - SENSITIVE / PROTÉGÉ - DÉLICAT 50
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL 51
Summary
• Equipment design / supply comprises about 50% of the total CANDU project costs split between NSP & BOP
• Much of the BOP equipment for CANDU units is similar to that of coal burning generating plants
• Nuclear equipment is often unique and specialized but business potential could be high
• Next presentation will outline the process to become a “Qualified CANDU Supplier”
52
Do you have any questions?
Questions
AECL - OFFICIAL USE ONLY / À USAGE EXCLUSIF - EACL
AECL – OFFICIAL USE ONLY | À USAGE EXCLUSIF - EACL