BAT Quality Assurance Protocols 2

Question 1

What is the purpose of an Alcohol Reference Solution (ARS) in evidential breath testing?

Accepted Answer

To verify the accuracy of the breath test instrument

Answer

An Alcohol Reference Solution is used to verify that the breath test instrument is producing accurate readings at a known alcohol concentration.

Question 2

Under DOT regulations, how often must an external calibration check be performed on an Evidential Breath Testing device?

Accepted Answer

Every 14 days or 150 tests, whichever comes first

Answer

DOT regulations (49 CFR Part 40) require external calibration checks every 14 days or 150 tests, whichever occurs first.

Question 3

Which document must be retained to demonstrate that an EBT passed its most recent calibration check?

Accepted Answer

The calibration check log or printout

Answer

A calibration check log or printout showing passing results must be retained as proof that the instrument was functioning correctly.

Question 4

If the ARS reading on an EBT falls outside acceptable accuracy limits, the BAT must:

Accepted Answer

Take the device out of service immediately

Answer

If the ARS reading is outside acceptable limits, the EBT must be taken out of service until it is recalibrated and passes a new accuracy check.

Question 5

What is the acceptable range for an ARS confirmation reading on an EBT set to target 0.080 g/210L?

Accepted Answer

0.076–0.084 g/210L

Answer

DOT requires that an ARS reading fall within ±0.005 g/210L of the target value, so for a 0.080 target the range is 0.076–0.084.

(BAT) Breath Alcohol Technician Certified Practice Test