EMS 1.5.3 - Initial Scene Assessment Factors, Hazards & Recommended Controls - EVfriendly

EMS 1.5.3

Initial Scene Assessment Factors, Hazards & Recommended Controls

FACTOR	HAZARDS	RECOMMENDED CONTROLS
Initial Scene Assessment	Limited time for inspection, presence of high voltage hazards, unknown vehicle type	• Assess the scene for visible damage and determine the vehicle type. • Maintain constant communication with emergency personnel. • Use visual, auditory, and olfactory cues to identify high-voltage system issues.
Vehicle Identification	Difficulty distinguishing EVs from ICE vehicles	• Assume all vehicles are electric until confirmed otherwise. • Identify the vehicle type using model, badging, high-voltage (orange) cables, or dashboard indicators (i.e., "ready" light).
Visual Inspection	Signs of fire (smoke, flames), noises indicating thermal runaway (gurgling, hissing)	• Use a thermal camera, if available, to detect hot spots. • If fire indicators are present, notify the fire department if they are not already on-site, and clear the area around the vehicle.
Submerged Vehicle Assessment	Risk of thermal runaway or re-ignition after water exposure and increased short circuit risk, especially in saltwater.	• Avoid direct contact with high-voltage components. • Allow the vehicle to drain before attempting any disablement procedures.
Structural Integrity Check	Potential for collapse or dislodged battery post-incident	• Confirm that recovery equipment has adequate capacity for the vehicle. • Visually inspect the vehicle’s structural stability before loading.
Battery Leakage Inspection	Toxic electrolyte release, contact risks	• Check for a sweet, ether-like odor, which may indicate leaked electrolyte. • If safe, neutralize leaks using boric acid or vinegar. • Notify responders of potential hazards and follow hazmat protocols for containment and disposal.
Initial Environmental Assessment	Possible contamination to nearby water sources, risk of fire spread to foliage	• Evaluate the environment for contamination risks and flammable materials. • Use fire blankets or establish a 50-foot clearance area around potential fire hazards.