RESPONSE TIME
vs. FIRE GROWTH
RUN YOUR NUMBERS
Adjust the inputs below to model your facility’s response time exposure against the fire growth curve.
— min
On-site RMF intercept
— min
Municipal arrival (modeled)
— kW
Fire size at RMF intercept
— kW
Fire size at municipal arrival
Municipal response clock: ignition to water on fire
Ignition to detection / alarm
—
Alarm processing (dispatch)
1.07 min
Turnout (gear + apparatus)
1.33 min
Travel time
—
Where these numbers come from
Facility profile
Response clock: applies to every profile
Alarm processing 1.07 min
NFPA 1710 (2020) §4.1.2.1: 64 seconds for alarm processing at 90% of calls. Excludes the 15-second call-answering allowance.
Turnout 1.33 min
NFPA 1710 (2020) §4.1.2.1: 80 seconds turnout time for fire and special operations response (60 seconds for EMS).
Travel time
Distance ÷ average apparatus speed. NFPA 1710 sets a 240-second (4-minute) first-engine travel benchmark; the speeds offered here bracket what that benchmark implies across suburban, rural, and highway access.
RMF on-site intercept
Detection + 1.5 min. On-site brigades bypass the 911 relay entirely (direct alarm-to-brigade routing) and travel is intra-campus. Reflects OSHA 1910.156 incipient-brigade and NFPA 600 industrial fire brigade deployment.
t² growth model
Q = αt², the standard engineering fire-growth model in the SFPE Handbook of Fire Protection Engineering, NFPA 92, and NFPA 204. Growth classes are defined by the time to reach 1,055 kW: slow 600 s, medium 300 s, fast 150 s, ultra-fast 75 s.
—min
—
NFPA 1710 target6.4 min
Compared with
Fire-growth band at arrival
046814+ min
TURN THIS INTO YOUR NUMBER
5-MINUTE FACILITY READINESS ASSESSMENT
The interactive shows the principle. The assessment scores your actual site — including distance, dispatch, and staffing model — and routes you to a tailored review.
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TURN THIS INTO YOUR NUMBER
5-MINUTE FACILITY READINESS ASSESSMENT
The interactive shows the principle. The assessment scores your actual site — including distance, dispatch, and staffing model — and routes you to a tailored review.
MORE ON INDUSTRIAL & CRITICAL SITES
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Talk with our team about your site or your community. No obligation — just a clear picture of where you stand.