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BSI 23/30447629 DC 2023

BSI 23/30447629 DC 2023

$13.70

BS EN IEC 62933-5-1. Electrical energy storage (EES) systems – Part 5-1. Safety considerations for grid-integrated EES systems. General specification

Published By Publication Date Number of Pages
BSI 2023 78
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PDF Pages PDF Title
4 CONTENTS
8 FOREWORD
10 INTRODUCTION
11 1 Scope
2 Normative references
16 3.8.2
17 4 Basic approach for safety considerations of EES systems
5 Hazard considerations for EES systems
5.1 Electrical hazards
18 Electric hazards can also arise from inappropriate electric firefighting procedures. Emergency response guidelines for the EESS shall address appropriate firefighting procedures applicable to that EESS technology.
5.2 Mechanical hazards
5.3 Energy hazards
5.3.1 Explosion hazards
5.3.2 Hazards arising from electrical, magnetic, and electromagnetic fields
Risk caused by radioactive substances (radiation and ingestion) are out of the scope of this document.
5.4 Fire hazards
5.6 Chemical hazards
19 5.7 Unsuitable working conditions
6 EESS risk assessment
6.1 EESS structure
6.1.1 General characteristics
20 6.1.2 Specific characteristics
6.2 Description of storage conditions
6.2.1 Types of grids, applications and locations
21 6.2.2 Vulnerable elements
6.2.3 Special provisions for EES systems in generally accessible locations
6.2.4 Sources of external aggression
6.2.5 Unattended operation
6.2.6 Unintentional islanding
22 6.3 Risk analysis
6.3.1 General
23 6.3.2 Risk considerations
6.3.2.1 Ineffective access control
6.3.2.2 Ineffective protection coordination
6.3.2.3 Ineffective malfunction detection
6.3.2.4 System control malfunction
6.3.2.5 Auxiliary subsystem malfunction
6.3.2.6 Insufficient Safety policies
6.3.2.7 Improper working environment, conditions, and equipment
24 6.3.2.8 Ineffective warnings, protection mechanisms and procedures for incident response
6.3.2.9 Risks from improper maintenance
6.3.2.10 Serious hazard risks
6.3.3 System level risk analysis
7 Requirements necessary to reduce risks
7.1 General measures to reduce risks
26 Figure 5 – Damage propagation from a contained incident to a major incident, and layered measures to minimize damage
7.2 Preventive measures against damage to neighbouring inhabitants
27 7.3 Safety-related design review
7.3.1 General
7.3.2 Initial safety design review
28 7.4 Preventive measures against damage to workers and other persons at risk
7.4.1 Protection from electrical hazards
7.4.1.1 General electrical safety
7.4.1.2 Accessibility to hazardous live parts
7.4.1.3 Protection from exposure to moisture and pollution
7.4.1.4 Electrical insulation and protection against electrical shock
29 7.4.1.5 Protection against out of normal operation range
7.4.1.6 Electrical components impacting safety
30 7.4.1.7 Unintentional islanding
7.4.2 Protection from mechanical hazards
7.4.3 Protection from high pressure hazards
31 7.4.4 Protection from explosive atmosphere hazards
32 7.4.5 Protection from hazards arising from electric, magnetic, and electromagnetic fields
7.4.6 Protection from fire hazards
33 7.4.7 Protection from thermal hazards
7.4.7.1 Protection from exposure to temperature hazards
7.4.7.2 Protection of temperature sensitive parts
34 7.4.8 Protection from chemical hazards
See IEC 62933-5-2 for BESS considerations regarding toxic gas safety considerations.
7.4.9 Protection from workplace hazards
7.4.9.1 Remote controls and automatic controls
EES systems which have the ability to be controlled remotely shall be provided with a means to disable the remote control in order to perform inspection or maintenance. The use of a remote control system shall not lead to an unsafe condition as determ…
35 7.4.9.2 Working space
7.4.9.3 Egress and protection from physical hazards
7.4.9.4 Ventilation
7.4.9.5 Task lighting within EES systems
7.4.10 Staff training
36 The duty to provide training also applies to the employees of outside contractors. Training shall be given by a competent person. Records shall be kept in writing of the date and content of training activities and the participants.
7.5 EESS disconnection and shutdown
7.5.1 General
37 7.5.2 Grid-disconnected state
7.5.3 Stopped state
7.5.4 EESS shutdown
38 7.5.5 Partial disconnection
7.5.6 Equipment guidelines for emergency shutdown
39 7.6 Cyber security
7.7 Remote monitoring and unattended operation
8 System testing
8.1 General
41 8.2 Validation and testing of EESS – Electrical hazards
8.2.1 Accessibility to hazardous live parts
8.2.2 Protection from exposure to moisture and pollution
42 8.2.3 Electrical insulation and protection against electrical shock tests
44 8.2.4 Protection against out of normal operation range tests
45 8.2.5 Anti-islanding
46 8.3 Validation and testing of EESS – Mechanical hazards
8.3.1 Enclosure strength against impact
8.3.2 Enclosure strength against static force
47 8.3.3 Containment of hazardous moving parts
8.3.4 Mounting means and handle robust test
8.3.5 Impact and vibration during transportation and seismic events
48 8.4 Validation and testing of EESS – Fluid hazards (high or low temperature, high pressure, flammable, corrosive/caustic or toxic)
8.4.1 Hazardous fluid containing parts strength test
8.4.2 Hazardous fluid containing parts leakage test
49 8.4.3 Start-to-discharge pressure test
50 8.5 Validation and testing of EESS – Explosion and combustible concentrations hazards
8.5.1 Gas detection and off-gas detection
8.5.2 Mechanical ventilation evaluation
51 8.6 Validation and testing of EESS – Hazards arising from electric, magnetic and electromagnetic fields
8.7 Validation and testing of EESS – Fire propagation hazards
8.8 Validation and testing of EESS – Temperature hazards
8.8.1 Containment of hazardous temperature (low or high) fluids
8.8.2 Temperature under normal operation tests
52 8.9 Validation and testing of EESS – Chemical effects
8.9.1 Strength tests
8.9.2 Leakage tests
8.10 Validation and testing of EESS – Hazards arising from the environment
8.10.1 Ingress of moisture
8.10.2 Exposure to marine environments
53 8.11 Validation and testing of EESS – Hazards arising from auxiliary, control and communication subsystem malfunctions
The EESS includes primary, auxiliary and control subsystems as shown in Figure 8. A fault arising in any one of these subsystems can impact the overall system and result in a hazard to that system.
8.11.1 Auxiliary system malfunction
56 8.11.2 EES control subsystem malfunction
8.11.3 EESS internal communication malfunction
57 8.11.4 EESS external communication malfunction
59 9 Instruction manuals and guidelines
9.1 General
9.2 Installation manual
60 9.3 Maintenance manual
9.3.1 Personal protective equipment (PPE) guidelines
61 9.4 Operator manual
9.5 Emergency procedure manual
62 9.6 First response manual
10 Markings and Signage
10.1 Nameplate
10.2 Cautionary markings and signage
63 Annex A (informative) Main risks of different storage technologies
A.1 General
A.2 Pumped hydro storage
64 A.3 Flywheel
A.4 Gravitational EESS storage
65 A.5 Battery energy storage systems
A.6 Hydrogen and synthetic natural gas
66 A.7 Thermal EESS technologies
67 A.7 Other EESS technologies
76 Bibliography

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BSI 23/30447629 DC 2023
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