UL Options introduced it has enhanced large-scale hearth testing for battery power storage programs (BESS) to offer code authorities and hearth service professionals clearer data on how battery fires could begin, develop and unfold.
The brand new testing is performed based on the sixth edition of ANSI/CAN/UL 9540A, the Customary for the Check Methodology for Evaluating Thermal Runaway Fireplace Propagation in Battery Vitality Storage Techniques. The up to date technique expands guidance for installation-level, large-scale hearth testing, enabling UL Options to extra intently replicate what occurs when a hearth begins inside an power storage enclosure and the way that fireplace would possibly have an effect on close by gear or buildings.
Photograph by Dennis Schroeder / NREL
Thermal runaway is a battery failure situation during which overheating may cause the discharge of flammable gases and, in some instances, ignition. Understanding how this course of unfolds at full set up scale is vital for evaluating security dangers.
“Battery power storage programs are being deployed at bigger scales and nearer to the place individuals dwell and work,” stated Wesley Kwok, vp and common supervisor of the Vitality and Industrial Automation group at UL Options. “This testing offers authorities and hearth departments sensible knowledge they’ll use to judge layouts, separation distances and hearth safety methods with better confidence.”
Throughout large-scale exams, UL Options deliberately initiates a hearth inside a BESS enclosure and observes the way it develops underneath practical set up situations. The testing examines whether or not hearth can unfold between battery items, whether or not warmth or flames might ignite close by constructions and the way air flow and fuel launch affect hearth conduct. It additionally evaluates how energetic and passive hearth safety options carry out when uncovered to battery fires.
Check configurations are designed to reflect actual installations, together with out of doors containerized programs, indoor battery rooms and websites the place a number of enclosures are grouped or stacked. Aligning check setups with precise layouts helps guarantee outcomes are sensible and related.
The findings are documented in detailed stories that can be utilized by code authorities to judge set up proposals, evaluate various design approaches permitted underneath hearth and constructing codes and assess whether or not producer‑really useful clearances are acceptable. Battery power storage system designers can use the identical data to develop compliant, threat‑knowledgeable layouts, justify various designs and tackle allowing and code authority considerations early within the design course of. Fireplace departments may also leverage the findings for hazard assessments, pre‑incident planning and response methods.
The up to date 9540A testing contains installation-level, large-scale hearth testing that evaluates hearth propagation threat to adjoining or close by BESS or constructions.
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