Fire Suppression Techniques Flashcards

What is the primary purpose of a 'backfire' in wildland fire suppression?

Answer: To burn fuel between a control line and the advancing fire

A backfire intentionally burns out fuel between a control line and the main fire, eliminating the fuel the fire needs to advance.

When constructing a hand line, what is the standard minimum width for the mineral soil scratch line?

Answer: 18 inches

A hand line scratch to mineral soil should be at least 18 inches wide to effectively stop fire spread in most conditions.

Which suppression method is most appropriate for a low-intensity ground fire with abundant fine fuels?

Answer: Direct attack with hand tools and water

Low-intensity ground fires with fine fuels are best addressed with direct attack using hand tools and water to smother and cool the burning material.

What does 'mop-up to the black' mean during fire suppression operations?

Answer: Extinguishing all heat sources along the control line perimeter

Mopping up to the black means thoroughly extinguishing all smoldering material and heat within the already-burned area near the control line.

In indirect attack strategy, where is the control line typically constructed?

Answer: Away from the fire's edge using natural barriers or roads

Indirect attack builds control lines away from the fire's edge, using natural barriers, roads, or previously cleared areas to contain the fire.

What is the function of a 'wet line' in fire suppression?

Answer: A temporary control line created using water or foam to prevent fire spread

A wet line is a temporary fire line created by applying water or foam to vegetation to suppress ignition and prevent fire spread.

During a firing operation, what is the role of the 'holding crew'?

Answer: Suppressing any fire that escapes the control lines

The holding crew's job is to patrol the control lines and suppress any spotfires or slop-overs that escape during a firing operation.