Already a subscriber? ![](/assets/images/login.png)
![](/assets/images/x.png)
MADCAD.com Free Trial
Sign up for a 3 day free trial to explore the MADCAD.com interface, PLUS access the
2009 International Building Code to see how it all works.
If you like to setup a quick demo, let us know at support@madcad.com
or +1 800.798.9296 and we will be happy to schedule a webinar for you.
Security check![](/assets/images/x.png)
Please login to your personal account to use this feature.
Please login to your authorized staff account to use this feature.
Are you sure you want to empty the cart?
![](/assets/images/159.gif)
23/30447629 DC BS EN IEC 62933-5-1. Electrical energy storage (EES) systems - Part 5-1. Safety considerations for grid-integrated EES systems. General specification, 2023
- 120_325e_CDV.pdf [Go to Page]
- CONTENTS
- FOREWORD
- INTRODUCTION
- 1 Scope
- 2 Normative references [Go to Page]
- 3.8.2
- 4 Basic approach for safety considerations of EES systems
- 5 Hazard considerations for EES systems [Go to Page]
- 5.1 Electrical hazards
- 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 [Go to Page]
- 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
- 5.7 Unsuitable working conditions
- 6 EESS risk assessment
- 6.1 EESS structure [Go to Page]
- 6.1.1 General characteristics
- 6.1.2 Specific characteristics
- 6.2 Description of storage conditions [Go to Page]
- 6.2.1 Types of grids, applications and locations
- 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
- 6.3 Risk analysis [Go to Page]
- 6.3.1 General
- 6.3.2 Risk considerations [Go to Page]
- 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
- 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 [Go to Page]
- 7.1 General measures to reduce risks
- 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
- 7.3 Safety-related design review [Go to Page]
- 7.3.1 General
- 7.3.2 Initial safety design review
- 7.4 Preventive measures against damage to workers and other persons at risk [Go to Page]
- 7.4.1 Protection from electrical hazards
- 7.4.1.1 General electrical safety [Go to Page]
- 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
- 7.4.1.5 Protection against out of normal operation range
- 7.4.1.6 Electrical components impacting safety
- 7.4.1.7 Unintentional islanding
- 7.4.2 Protection from mechanical hazards
- 7.4.3 Protection from high pressure hazards [Go to Page]
- 7.4.4 Protection from explosive atmosphere hazards
- 7.4.5 Protection from hazards arising from electric, magnetic, and electromagnetic fields
- 7.4.6 Protection from fire hazards
- 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
- 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 [Go to Page]
- 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...
- 7.4.9.2 Working space
- 7.4.9.3 Egress and protection from physical hazards
- 7.4.9.4 Ventilation [Go to Page]
- 7.4.9.5 Task lighting within EES systems
- 7.4.10 Staff training
- 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 [Go to Page]
- 7.5.1 General
- 7.5.2 Grid-disconnected state
- 7.5.3 Stopped state
- 7.5.4 EESS shutdown
- 7.5.5 Partial disconnection
- 7.5.6 Equipment guidelines for emergency shutdown
- 7.6 Cyber security
- 7.7 Remote monitoring and unattended operation
- 8 System testing [Go to Page]
- 8.1 General
- 8.2 Validation and testing of EESS - Electrical hazards [Go to Page]
- 8.2.1 Accessibility to hazardous live parts
- 8.2.2 Protection from exposure to moisture and pollution
- 8.2.3 Electrical insulation and protection against electrical shock tests
- 8.2.4 Protection against out of normal operation range tests
- 8.2.5 Anti-islanding
- 8.3 Validation and testing of EESS - Mechanical hazards
- 8.3.1 Enclosure strength against impact
- 8.3.2 Enclosure strength against static force
- 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
- 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
- 8.4.3 Start-to-discharge pressure test
- 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
- 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
- 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
- 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
- 8.11.2 EES control subsystem malfunction
- 8.11.3 EESS internal communication malfunction
- 8.11.4 EESS external communication malfunction
- 9 Instruction manuals and guidelines [Go to Page]
- 9.1 General
- 9.2 Installation manual
- 9.3 Maintenance manual
- 9.3.1 Personal protective equipment (PPE) guidelines
- 9.4 Operator manual
- 9.5 Emergency procedure manual
- 9.6 First response manual
- 10 Markings and Signage [Go to Page]
- 10.1 Nameplate
- 10.2 Cautionary markings and signage
- Annex A (informative) Main risks of different storage technologies [Go to Page]
- A.1 General
- A.2 Pumped hydro storage
- A.3 Flywheel
- A.4 Gravitational EESS storage
- A.5 Battery energy storage systems
- A.6 Hydrogen and synthetic natural gas
- A.7 Thermal EESS technologies
- A.7 Other EESS technologies
- Bibliography [Go to Page]