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BS IEC 63046:2020

BS IEC 63046:2020

$215.11

Nuclear power plants. Electrical power system. General requirements

Published By Publication Date Number of Pages
BSI 2020 90
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IEC 63046:2020 provides requirements and recommendations for the overall Electrical Power System. In particular, it covers interruptible and uninterruptible Electrical Power Systems including the systems supplying the I&C systems; This document is consistent and coherent with IEC 61513. Like IEC 61513, this document also highlights the need for complete and precise requirements, derived from the plant safety goals. Those requirements are prerequisites for generating the comprehensive requirements for the overall Electrical Power System architecture, and for the electrical power supply sub-systems. This document establishes the high level specification and requirement to implement a suitable Electrical Power System in a NPP that supports reactor systems important to safety. It also enables electrical energy production providing the transmission grid with active and reactive power and electro-mechanical inertia.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 English
CONTENTS
7 FOREWORD
9 INTRODUCTION
11 1 Scope
1.1 General
12 Figures
Figure 1 – Scope of work of this document
13 1.2 Application: new and pre-existing plants
1.3 Framework
1.4 Interaction with level 2 standards
14 Figure 2 – Architecture of Electrical Power System
15 2 Normative references
16 3 Terms and definitions
25 4 Abbreviated terms
26 5 Overall Electrical Power System life cycle
27 6 Architecture of Electrical Power System: identification of requirements
6.1 Objectives
Figure 3 – Connections between the overall Electrical Power System life cycleand the life cycles of the electrical power sub- systems
28 6.2 Safety requirements applicable to the electrical architecture design
6.2.1 Defence in Depth
6.2.2 Application of Single Failure Criterion
6.2.3 Management of the Common Cause Failure
6.2.4 Loss Of Off-site Power conditions
29 6.2.5 Station Black Out conditions
6.2.6 Loss of Electrical Power conditions
6.2.7 Application of internal and external Hazards
30 6.2.8 Nuclear security requirements
6.2.9 Classification requirements
6.2.10 Probabilistic requirements
6.3 Electrical requirements
6.3.1 Requirements coordinated with the electric grid operator
31 6.3.2 Electrical disturbances
6.4 Functional performance requirements
32 6.5 Maintenance requirements
7 Design of the electrical architecture
7.1 Objectives
7.2 Safety design provision
7.2.1 Defence in Depth in the Electrical Power System
33 7.2.2 Single Failure in the Electrical Power System
7.2.3 Common Cause Failure in the Electrical Power System
39 7.2.4 Provisions for coping with Loss Of Off-site Power
40 7.2.5 Provisions for coping with Station Black Out
7.2.6 Provisions to avoid or reduce Loss of Electrical Power
7.2.7 Classification consideration
41 7.2.8 Provisions to achieve the reliability target for the Electrical Power System
42 7.3 Electrical design provision
7.3.1 General
7.3.2 Coordination with the grid
7.3.3 Design to achieve electrical requirements
45 Figure 4 – Typical voltage design bases (IEC 62855)
48 7.4 Functional and performance design provisions
7.4.1 General
7.4.2 Electrical Power System studies
51 7.4.3 Design of the Interruptible Power Supply System
7.4.4 Design of the Uninterruptible Power Supply System
52 7.5 Maintenance
7.5.1 Consideration of the maintenance in the electrical design
53 7.6 Multi-unit shared electrical power systems
7.7 Electrical system layout
7.8 Supporting and associated systems for the Electrical Power System
54 7.9 Overall quality assurance programs
55 7.10 Requirements for output documentation
7.10.1 General
56 7.10.2 Architecture principles
57 7.10.3 Single line diagrams
8 Sub-system requirements
8.1 Electrical Power System basis requirements
8.1.1 General
58 8.1.2 System Design
8.1.3 Single line diagram
8.2 Equipment design specification
8.3 Equipment requirements
8.4 AC Interruptible Electrical Power Supply System
59 8.5 AC/DC Uninterruptible Power Supply System
8.6 Coordination and interaction with power grid
8.7 Earthing
9 Verification of the architecture of the Electrical Power System
9.1 General
9.2 Computerised tools and models verification
9.2.1 Electrical Power System verification
9.2.2 Layout of electrical power systems and equipment verification
60 9.3 Test requirements
61 10 Overall integration and commissioning
10.1 General
10.2 Requirements
62 10.3 Output documentation
11 Overall operation and maintenance
11.1 General
11.2 Requirements
11.3 Output documentation
63 12 System quality assurance plan
12.1 General
12.2 System verification plan
64 12.3 System configuration management plan
12.4 Fault resolution procedures
65 Annex A (informative)Basic safety issues in NPPs
A.1 General
A.2 Plant safety objectives
A.3 Plant safety analysis
A.3.1 General
66 A.3.2 Analysis of event sequences
A.3.3 Assessment of design basis: deterministic/probabilistic methods
A.4 Defence in Depth
68 Table A.1 – Support of the electrical power supply for the defence in depth of the plant
69 Annex B (informative)AC Interruptible Electrical Power System
B.1 General
B.2 Electrical design provisions
B.2.1 Steady state conditions for Electrical Power System
70 B.2.2 Electrical disturbances
73 B.3 Design of the Interruptible power system
B.3.1 Design of the preferred power supply
B.3.2 Design of the off-site power supply
74 B.3.3 Design of on-site preferred power supply
B.3.4 Design of the AC interruptible power systems important to safety
B.3.5 Design of internal standby sources
75 B.4 Preferred power supply system (from IAEA SSG 34:2016, chapter 6, clauses 6.1 to 6.44)
B.4.1 General
B.4.2 Operation
B.4.3 Grid interface and agreement with grid operator
B.4.4 Reliability of the preferred power supply
76 B.4.5 Off-site power supplies
77 B.4.6 Availability
B.4.7 Independence of off-site circuits
78 B.4.8 Switchyard
B.5 Safety power supply system supporting DBC (from IAEA SSG 34:2016, chapter 7)
B.5.1 General
79 B.5.2 Design (from IAEA SSG 34:2016, chapter 7, clauses 7.36 to 7.63)
81 B.5.3 Testing (from IAEA SSG 34:2016, chapter 7, clauses 7.64 to 7.67)
B.5.4 Performance criteria (transient and dynamic) (from IAEA SSG 34:2016, chapter 7, clauses 7.68 to 7.70)
B.5.5 Relay protection of standby power sources (from IAEA SSG 34:2016, chapter 7, clauses 7.71 to 7.75)
82 B.5.6 Support systems for standby AC power sources
B.5.7 Fuel for standby AC power sources
B.6 Power supply system important to safety supporting DEC
B.6.1 General
83 B.6.2 Design (from IAEA SSG 34:2016, chapter 8, clauses 8.1 to 8.18)
84 B.7 Mobile sources connections network
B.8 Monitoring and switching of buses
86 Annex C (informative)Earthing
87 Annex D (informative)Logic diagram followed for the design of the EPS
88 Bibliography

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BS IEC 63046:2020
$215.11