Audiometric Testing is a hearing test used to determine the quality of hearing of an individual. In Alberta, if an employee works in an environment that exceeds 85dBs for 8 hours a day, the employer must provide adequate hearing protection, and conduct audiometric tests as part of a full hearing conservation program. This is outlined in Part 16 of the Alberta Occupational Health & Safety Code.
Audiometric testing is required to take place at the following intervals:
- Within the first 6 months of hire. Although, it is recommended at the time of pre-employment to calculate a true baseline.
- 12 months after the baseline test
- If results are normal, every 24 months after the 12 month periodic test; if results are abnormal, every 12 months after the 12 month period test
- Exception: In extreme noise conditions, audiometric testing may be required every 6 months.
How Loud is Your Industry?
|Carpenter||91 dBA Lex|
|Autobody Technician||90 dBA Lex|
|Equipment Operator||91 dBA Lex|
|Iron Worker||93 dBA Lex|
|Night Club Worker||91-115 dBA Lex|
|Tree Faller||102 dBA Lex|
|Truck Driver||86-98 dBA Lex|
|Millwright||86-92 dBA Lex|
|Welder||88-94 dBA Lex|
|Fitness Instructor||90-92 dBA Lex|
|Jackhammer Operator||97 dBA Lex|
|Drywaller||89 dBA Lex|
|Saw Operator||82-96 dBA Lex|
Max Time Limit for Noise Exposure
|85 dB||8 Hours|
|88 dB||4 Hours|
|91 dB||2 Hours|
|94 dB||1 Hour|
|97 dB||20 Minutes|
|100 dB||15 Minutes|
Recommended Hearing Protection
|Less than 90 dBA||Class C – Grade 1|
|Less than 95 dBA||Class B – Grade 2|
|Less than 100 dBA||Class A – Grade 3|
|Less than 105 dBA||Class A – Grade 4|
|Less than 110 dBA||Earplugs + Earmuffs|