Energy storage pack level fire protection

What is the NFPA 855 standard for stationary energy storage systems?

Setting up minimum separation from walls, openings, and other structural elements. The National Fire Protection Association NFPA 855 Standard for the Installation of Stationary Energy Storage Systems provides the minimum requirements for mitigating hazards associated with ESS of diferent battery types.

How do you protect a battery module from a fire?

The most practical protection option is usually an external, fixed firefighting system. A fixed firefighting system does not stop an already occurring thermal runaway sequence within a battery module, but it can prevent fire spread from module to module, or from pack to pack, or to adjacent combustibles within the space.

Can water spray be used on high-voltage fire suppression systems?

Water spray has been deemed safe as an agent for use on high-voltage systems. Water mist fire suppression systems need to be designed specifically for use with the size and configuration of the specific ESS installation or enclosure being protected. Currently there is no generic design method recognized for water mist systems.

What is a Li-ion battery energy storage system?

Executive summary Li-ion battery Energy Storage Systems (ESS) are quickly becoming the most common type of electrochemical energy store for land and marine applications, and the use of the technology is continuously expanding.

What are the NFPA 855 fire-fighting considerations for lithium-ion batteries?

For example, an extract of Annex C Fire-Fighting Considerations (Operations) in NFPA 855 states the following in C.5.1 Lithium-Ion (Li-ion) Batteries: Water is considered the preferred agent for suppressing lithium-ion battery fires.

How does a fixed firefighting system work?

A fixed firefighting system does not stop an already occurring thermal runaway sequence within a battery module, but it can prevent fire spread from module to module, or from pack to pack, or to adjacent combustibles within the space. The afected module is likely to be fully lost, but the adjacent modules can be saved.