Fire Suppression Techniques Flashcards
7 cards from real RED CARD practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Fire Suppression Techniques flashcards as text
What is the purpose of a 'burnout' operation during wildland fire suppression?
Answer: Burning fuel between the control line and the fire to widen the black
A burnout intentionally burns fuel between an established control line and the approaching fire, strengthening the line by eliminating available fuel.
Which condition makes a direct attack on the fire's head most appropriate?
Answer: Low-intensity fire in accessible, flat terrain
Direct attack on a fire's head is safest and most effective when fire intensity is low and terrain is accessible, allowing crews to work close to the flames.
What is the main risk of using foam concentrate improperly on a wildland fire?
Answer: Incorrect dilution ratios reduce effectiveness or can damage equipment
Foam must be mixed at correct concentration ratios; too little reduces fire-knockdown effectiveness while too much can waste resources and clog nozzles or equipment.
What is the significance of the 30/30/30 rule in wildland fire behavior and suppression planning?
Answer: 30 mph wind, 30% relative humidity, 30-degree slope — high danger conditions requiring extreme caution
The 30/30/30 rule identifies extreme fire danger: wind speeds of 30 mph or more, relative humidity at 30% or below, and slopes of 30 degrees or steeper.
During a flanking attack, crews work along which part of the fire?
Answer: The sides (flanks) parallel to fire spread direction
Flanking attack involves constructing control lines along the sides of the fire, working from the heel toward the head to reduce the fire's width and contain spread.
What does 'size-up' refer to in wildland fire suppression?
Answer: Rapid initial assessment of fire location, behavior, terrain, and resources
Size-up is the process of rapidly gathering and evaluating information about a fire to determine the best suppression strategy and resource needs.
What is the purpose of a 'check line' or 'holding line' during a prescribed fire or burnout?
Answer: A control line built to stop backing or flanking fire movement and hold it within planned boundaries
A check or holding line is constructed to stop fire movement on the flanks or rear, ensuring the fire stays within planned boundaries during burnout or prescribed fire operations.