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№1 слайд![Course Fundamentals of AES-](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img0.jpg)
Содержание слайда: Course: Fundamentals of AES-2006 technology
Module 05: VVER (AES-2006) Safety Systems
№2 слайд![Training Objectives Training](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img1.jpg)
Содержание слайда: Training Objectives
Training Objectives
№3 слайд![Content Content](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img2.jpg)
Содержание слайда: Content
Content
№4 слайд![Safety Fundamentals for NPPs](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img3.jpg)
Содержание слайда: Safety Fundamentals for NPPs
№5 слайд![Definition of Safety](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img4.jpg)
Содержание слайда: Definition of «Safety»
Definition of «Safety»
№6 слайд![Definition of Safety](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img5.jpg)
Содержание слайда: Definition of «Safety»
Definition of «Safety»
№7 слайд![Major Industrial Disasters](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img6.jpg)
Содержание слайда: Major Industrial Disasters
Major Industrial Disasters
№8 слайд![The organisation operating a](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img7.jpg)
Содержание слайда: The organisation operating a nuclear power plant shall be responsible for the plant’s safe operation under all operational states and accident conditions
The organisation operating a nuclear power plant shall be responsible for the plant’s safe operation under all operational states and accident conditions
Personnel shall be encouraged to perform responsible work,
and to identify, report, and eliminate factors endangering safety. Personnel shall be given the opportunity to contribute
to the continuous improvement of safety
SAHARA principle – safety as high as reasonably achievable
№9 слайд![Design and Safety Functions](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img8.jpg)
Содержание слайда: Design and Safety Functions
№10 слайд![Defense-in-Depth Five](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img9.jpg)
Содержание слайда: Defense-in-Depth: Five Successive Levels of Protection
Defense-in-Depth: Five Successive Levels of Protection
№11 слайд![Physical barriers system](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img10.jpg)
Содержание слайда: Physical barriers system
Physical barriers system
№12 слайд![DiD Principle DiD Principle](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img11.jpg)
Содержание слайда: DiD Principle
DiD Principle
№13 слайд![Design Basis Conditions DBC](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img12.jpg)
Содержание слайда: Design Basis Conditions (DBC) and Design Extension Conditions (DEC)
Design Basis Conditions (DBC) and Design Extension Conditions (DEC)
№14 слайд![Acceptance Criteria](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img13.jpg)
Содержание слайда: Acceptance Criteria
Acceptance Criteria
№15 слайд![Plant States amp Design Basis](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img14.jpg)
Содержание слайда: Plant States & Design Basis / Envelope as Consequence of the Requirement of Practical Elimination
Plant States & Design Basis / Envelope as Consequence of the Requirement of Practical Elimination
№16 слайд![](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img15.jpg)
№17 слайд![](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img16.jpg)
№18 слайд![Level is divided into levels](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img17.jpg)
Содержание слайда: Level 3 is divided into levels 3a and 3b:
Level 3 is divided into levels 3a and 3b:
Level 3a includes systems ensuring execution of safety functions during accidents
of classes 1 and 2 (DBC-3 and DBC-4)
Level 3b includes systems ensuring execution of safety functions under the conditions when level 3a systems cannot perform their functions as a result of common-cause failures, external effects or other complex accident sequences
№19 слайд![Accident management strategy](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img18.jpg)
Содержание слайда: Accident management strategy includes:
Accident management strategy includes:
bringing the NPP to the controlled state
bringing the NPP to the safe state
Controlled state is the state when the fission chain reaction stops and residual heat is removed from the fuel
Safe state is the state when the fission chain reaction stops, residual heat is removed from the fuel and there is no excessive pressure within physical barriers 3 and 4
№20 слайд![](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img19.jpg)
№21 слайд![Safety systems are designed](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img20.jpg)
Содержание слайда: Safety systems are designed in accordance with the principles ensuring their reliability and failure tolerance:
Safety systems are designed in accordance with the principles ensuring their reliability and failure tolerance:
Redundancy principle
system redundancy – application of multi-train systems
component redundancy – component and equipment redundancy within system trains
Independence principle
physical separation
functional separation
Diversity principle
application of means based on different principles of operation
different physical variables
different operating conditions
different equipment manufacturers
Reliability of safety systems and equipment is provided by the quality of their design, manufacturing and maintenance. It is expressed by their safety class
№22 слайд![](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img21.jpg)
№23 слайд![](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img22.jpg)
№24 слайд![Reactivity control Reactivity](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img23.jpg)
Содержание слайда: Reactivity control
Reactivity control
№25 слайд![Supplies boric acid solution](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img24.jpg)
Содержание слайда: Supplies boric acid solution with the concentration of 40 g/kg and temperature
of at least 20 °C at any pressure in the primary circuit within the range
of 0.098 24.5 MPa
Supplies boric acid solution with the concentration of 40 g/kg and temperature
of at least 20 °C at any pressure in the primary circuit within the range
of 0.098 24.5 MPa
The system is has a four-train structure. System performance functioning is:
4x33% - functioning in ATWS (DEC)
4x50% - functioning in PRISE (DBC4)
The system includes the following:
plunger pumps
valves
pipelines
JNK system stores boric acid solution inventory with the concentration of 40 g/l.
The design provides for 4 tanks with the operating capacity of 50 m3
№26 слайд![](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img25.jpg)
№27 слайд![The design provides for the](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img26.jpg)
Содержание слайда: The design provides
for the following systems
and means to maintain
the coolant inventory
and to make up the primary circuit:
The design provides
for the following systems
and means to maintain
the coolant inventory
and to make up the primary circuit:
High pressure safety injection system JND
Low pressure safety injection system JNG-1
ECCS hydraulic accumulators JNG-2
KBB system pumps
№28 слайд![](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img27.jpg)
№29 слайд![The system for passive heat](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img28.jpg)
Содержание слайда: The system for passive heat removal through steam generators is designed to continuously remove residual heat from the core and cool down the RP to 130 °C in DEC conditions (level 3b).
The system for passive heat removal through steam generators is designed to continuously remove residual heat from the core and cool down the RP to 130 °C in DEC conditions (level 3b).
The system operates for 72 hours without operator participation during accidents with full blackout
and SG feedwater failure.
Heat is removed passively through steam lines
to EHRT tanks.
The system has a four-train structure.
System functioning efficiency is 4x33 %
№30 слайд![](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img29.jpg)
№31 слайд![The primary circuit](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img30.jpg)
Содержание слайда: The primary circuit overpressure protection system includes three pilot-operated relief valves, each consisting of the following:
The primary circuit overpressure protection system includes three pilot-operated relief valves, each consisting of the following:
main valve
relief valves with pipelines
cutoff valve
spring setting valve
additional control line with three successive valves
PORV 1 control – actuation pressure: 18.11 MPa.
PORV2, PORV3 operating – actuation pressure: 18.6 MPa.
Steam is discharged into bubbler JEG
№32 слайд![](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img31.jpg)
№33 слайд![](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img32.jpg)
№34 слайд![](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img33.jpg)
№35 слайд![Accident localization system](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img34.jpg)
Содержание слайда: Accident localization system
Accident localization system
№36 слайд![AES- E Layout AES- E Layout](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img35.jpg)
Содержание слайда: AES-2006/E Layout
AES-2006/E Layout
№37 слайд![](/documents_6/2abad1db23ac0e1e2854cfe97516cdea/img36.jpg)