Latest energy storage fire protection policy

What are the standards for ESS fire suppression systems?

Two commonly referenced standards for ESS fire suppression systems are FM Global Data Sheet (FM DS) 5-33 and NFPA 855. In the event of thermal runaway, it is essential to rapidly cool the affected module and its surroundings to prevent a chain reaction of battery fires.

Does NFPA 855 permit alternative fire suppression systems?

NFPA 855 also permits the use of alternative fire suppression systems if they successfully pass large-scale fire testing in accordance with Underwriters Laboratories (UL) 9540A, “Test Method for Evaluating Thermal Runaway Fire Propagation in Battery Energy Storage Systems,” or an equivalent standard.

What is an energy storage system (ESS) enclosure?

An energy storage system (ESS) enclosure typically comprises multiple racks, each containing several modules (Figure 1). These modules consist of numerous lithium-ion (Li-ion) cells, which function as rechargeable batteries designed to store and discharge electrical energy.

What are Svensk solenergi's fire safety guidelines?

The guidelines, which cover both small and large-scale installations, were created in collaboration with Svensk Solenergi’s member companies and the Swedish Fire Protection Association. “With this guideline, we want to make it easier for players in the industry to work safely and sustainably,” said Anna Werner, CEO of Svensk Solenergi.

What are the requirements for an ESS enclosure?

In accordance with National Fire Protection Association (NFPA) 855 standards, ESS enclosures must be constructed from noncombustible materials and adhere to specific dimensional limits, not exceeding 16.2 meters (m) in length, 2.6 m in width, and 2.9 m in height (53 ft. x 8.5 ft. x 9.5 ft.). 1. An energy storage system (ESS) enclosure.

How long should a LFP battery be separated from a combustible object?

For LFP batteries with sprinkler protection, the minimum separation is 0.9 m (3 ft.) from non-combustible objects and 1.5 m (5 ft.) from combustible objects. The discharge duration must be at least 90 minutes.