BESS Fire Safety Narrative - Tamsin Ridge Solar and Storage Project
5. Siting and separation
Enclosures are spaced 10 feet apart in rows with 25-foot aisles. The yard is 150 feet from the nearest property
line and 610 feet from the nearest residence (R-6). The substation is 60 feet from the yard. Heat flux modeling of
a single enclosure fully involved in fire shows less than 12.6 kW per square meter at the fence and at the
adjacent enclosure rows.
6. Fire department access and water
A 20-foot all-weather access road circles the yard, with two gates and a turnaround. There are no fire hydrants
in the area; the nearest pressurized water is in Carrollton, about 4 miles away. A 30,000-gallon firefighting water
storage tank with a dry hydrant connection is planned at the yard entrance for exposure protection. The first-due
fire department is a volunteer department about 5 miles away with two engines and one tanker. It has not yet
reviewed the design or the response plan.
7. Emergency response
A draft emergency response plan covers alarm notification, the 24-hour remote operations center with central
station monitoring, shutdown procedures, defensive tactics (protect exposures, let an involved enclosure burn
out, do not open its doors), air monitoring downwind, and post-incident handling of damaged batteries. It will be
completed with the fire department and the Carroll County Emergency Management Agency before the OPSB
application, and training will be offered to the fire department before commissioning.
8. Open items
• Confirm the code edition and permit path with the State Fire Marshal and the local fire code official.
• Obtain fire department review of access, water supply and tactics, and complete the emergency response
plan.
• Obtain large-scale fire test data from the manufacturer, if OPSB staff or the fire department request it.
• Quote starts. Plan for battery removal and recycling at end of life in the decommissioning plan. Quote ends.
Hollis Brandt, P.E., Fire Protection Engineer, Tallis Fire Engineering, LLC.
Tallis Fire Engineering, LLC - Report TFE-2306 Page 2 of 2
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