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• Severe accident simulation tool, with HMI, advanced 3D visualization and V&V
• Enables integration of MAAP* into full scope real-time simulators
• Enable to simulate entire plant of Multi-Unit • Open the “Black Box” for ease of use • Synchronization and repeatability • Interactive operations, simulation or analysis • Maintain MAAP code integrity and fidelity
Product Features
MAAP5.0 Note: *MAAP 5.0 was developed by the Electric Power Research Institute (EPRI). Purchasers of PSA-HD are first required to have a MAAP 5.0 license from EPRI. *EPRI (www.epri.com) conducts research and development relating to the generation, delivery and use of electricity for the benefit of the public. An independent, nonprofit organization, EPRI brings together its scientists and engineers as well as experts from academia and industry to help address challenges in electricity, including reliability, efficiency, health, safety and the environment. EPRI does not endorse any 3rd party products or services. Interested vendors may contact EPRI for a license to MAAP 5.0.”
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Basic Client-Server Structure
output
input
Client
Simulator Host Executive
(GSE or non-GSE)
HD Client Executive #1
Server
Client C Module
Server input/output Status request
control
Customized Plug-in
interface Client
Standard HD Server
Configuration
PSA-HD Platform Client and Server Structure
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PSA-HD Repeatability
PSA-HD has significantly improved the
repeatability of the original MAAP code
MAAP Restart Repeatability Test PSA-HD Reset Repeatability Test
Output Difference=0.0
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Main HD Simulation Processes
freeze
Create restart or update input decks : Pygi
Start HD Executive
Read Input or Restart Decks
Initialize 3rd Party Engineering Code
Run a Frame
Interactive User Actions
HD IC Files
reset
snap
End
Text Edit Output
Input or Restart File
Start 3rd Party Engineering Code
batch Job
Read Input or Restart Decks
Initialize 3rd Party Engineering Code
Run the Whole Job
End
Scheduled Time end
exit
3rd Part Engineering
Code
Scheduled
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JDB Model Trending & Control
Simulation Control
Command Window
Trend Plotting
Code variable monitor & control
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Dynamic Graphic Display: Core
Unit 1 Unit 2
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Containment Dynamic Display
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Dose Dynamic Display
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Auxiliary Building MAAP5
Spent Fuel Pool
Unit 2
Containment MAAP5
RCS TH
Code/ MAAP5
SG
TH Code/ MAAP5
Core S3R
Unit 1
Containment MAAP5
RCS TH
Code/ MAAP5
SG
TH Code/ MAAP5
Core S3R
In-plant DOSE simulation
In-plant DOSE simulation
Ex-plant DOSE Simulation
MAAP5
A Demo on a 2-Unit Plant of Westinghouse 4-Loop PWR
PSA-HD in Full-scope Simulator
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Multiple Client-Server Structure
JADE Operation Station DCS-Like HMI
Animation, Soft Panels,
Interface Simulation Control
HD MAAP Server 1 Unit 1 (RCS, SG,
Containment/DOSE)
HD MAAP Server 2 Unit 2 (RCS, SG,
Containment/DOSE)
HD MAAP Server 3 Aux Building (Spent Fuel
Pool, DOSE)
JADE Dashboard (JDB) HD server
Graphical User Interface Interactive Control,
Monitor, V&V
PSA-HD Client
PSA-HD Platform Configuration for plant site with 2-Unit Westinghouse 4-Loop PWR
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Core Mass: Unit 1
core molten relocation to vessel lower head started.
Core starts to melt.
Reactor vessel failed by molten ejection to containment.
Severe Accident Scenario in Unit 1
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H2 Generation
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Ex-Plant Dose
Point 1 Distance: 100 m Point 2 Distance: 200 m
Total Ex-plant Dose
Total ex-plant dose considering multiple radioactive leakages from different units/buildings are simulated in the Aux Building executive.
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PSA-HD in Full-scope Simulator
Timeline 0 Min. ~60 Min. 3 Hrs. 20
Min. 5 Hrs. 30
Min.
Scenario Steady-state LOCA, code
transition
LOCA, Core melt-down
LOCA, Vessel failed
MAAP Server #1
Unit #1 RCS/SG
TH Code
Transition MAAP5.0
Unit #1 Containment
MAAP5.0
MAAP Server #2
Shared Aux. Building (w/ SFP)
MAAP5.0
Simulator BOP GSE JTopmeret
Neutronics Studsvik S3R
PSA-HD Integrated with Full-scope Simulator of Westinghouse 4-loop PWR
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Multi-Units Desktop Application
PSA-HD Platform is Flexible & Ideal for Multi-Units Configuration
4-unit CANDU NPP
Shared Building/Components
Unit #1
Unit #2
Unit #3
Unit #4
Server #1 Server #2 Server #3 Server #4
Server #5
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SAMG assisted by PSA-HD
• SAMG Verification − Evaluate standards & criteria to be technically & literally
completed − Applicability of generic SAMGs to specific plant
• SAMG Validation − Evaluate the correct use and feasibility for the personnel (MCR,
TSC) involved in the SAM based on scenarios − MAAP code simulates “Validation scenario” to provide reference
sequences & evaluate the effectiveness of SAMG − Discrepancies or deviations to be identified for improvement
• Training Program − Phenomenology and events sequence concerning to severe
accident − Transition between EOPs & SAMGs − MCR & TSC exercise & communication − Instrumentation performance
PSA-HD provides Variety & Reality for SAMGs.
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SAMG assisted by PSA-HD
Full-scope Simulator PSA-HD
NOP EOP SAMG
Emergency Director (Plant Manager)
Local Field Personnel
Main Control Room Technical Support Center
Radiological Center
Postulated Actions Validation
Realistic Training Realistic Training
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PSA-HD Platform Benefits
− Parallel simulation to the entire multi-unit plant site;
− Synchronized simulation between multiple systems & components;
− Flexible configuration through Client-server structure;
− Open the “black box” to access code internal variables;
− User friendly 3-D HMI for dynamic display scenarios;
− HMI Built-in features for plotting, V&V, risk analysis, multi-languages;
− User’s interactive actions easily available through HMI;
− Significantly improved code repeatability;
− Ready to integrate with full-scope simulator;
− SAMG Verification & Validation and Training.