CBM Prescribed Burn Planning & Implementation 2

Question 1

Which section of a prescribed burn plan documents the minimum and maximum weather parameters under which the burn may proceed?

Accepted Answer

Prescription window

Answer

The prescription window defines the acceptable range of weather parameters (wind speed, relative humidity, temperature, ERC) that must be met before ignition.

Question 2

A burn boss determines that smoke from a planned burn will impact a Class I airshed. What is the MOST appropriate action?

Accepted Answer

Cancel or reschedule the burn to avoid Class I area impacts

Answer

Class I airsheds receive the highest level of air quality protection, and burns that would significantly impact them should be cancelled or rescheduled.

Question 3

What is the primary purpose of conducting a test fire at the start of a prescribed burn?

Accepted Answer

To verify actual fire behavior matches prescription predictions before full ignition

Answer

A test fire validates that fire behavior, smoke dispersal, and fuel moisture conditions actually match what was predicted in the burn plan.

Question 4

During a prescribed burn, a crew member reports that fire intensity has doubled in the past 15 minutes with no change in weather. What should the burn boss consider first?

Accepted Answer

Possible shift in fine fuel moisture or undetected fuel continuity

Answer

Unexpected increases in fire intensity often indicate that actual fuel moisture or fuel loading differs from plan assumptions, requiring immediate reassessment.

Question 5

Which ignition technique is BEST suited for backing fires to maintain low intensity under prescription in heavy fuel loads?

Accepted Answer

Flank ignition from the downwind end toward the wind

Answer

Backing fires ignited from the downwind end burn against the wind at lower intensity, making them more controllable in heavy fuels.

(CBM) Certified Burn Manager Practice Test

(CBM) Certified Burn Manager Practice Test

CBM Prescribed Burn Planning & Implementation 2