CAOHC Certification UPDATED ACTUAL Questions and CORRECT Answers
Action Level/AL-Exposure Limits 85dBA
Enrollment in HCP is mandatory
what action must be taken at 85dBA
Hearing protection must be made available
Permissible Exposure Limit (PEL) 90dBA
Engineering controls are mandatory
When PEL is reached Administrative controls are mandatory
Hearing protection is Mandatory
HCP regulation 29 CFR 1910.95
100% noise dose 90dBA 8hr TWA
OSHA exchange rate 5 dB
NIOSH exchange rate 3 dB
impulse/impact noise <1 second
Difference Add to Higher Value
0 or 1 dB 3dB
Adding dB Rule of Thumb 2 or 3 dB 2dB
4 to 9 dB 1dB
10 dB or more 0dB
functional check/biological calibration daily (if it differs by 10dB or more, do acoustic callibration)
test order 1000-500 -1000 -2000-3000-4000-6000
what settings should a hearing test start at? 30dB; 1000Hz
Bracket procedure down by 10dB, up by 5dB
normal hearing 0-25
what must you get to find the hearing threshold? 2/3 ascending responses
when should you add 20dB to the previous threshold? when changing frequencies
Recordable STS change of 10dB or more AND threshold is >25
, OSHA - form 300 log
how to report STS
MSHA - form 7000
OSHA/FRA - in writing within 21 days
window for reporting STS
MSHA - in writing within 10 days
how to figure out the NRR of dual HPDs add 5dB to the higher NRR
How do you calculate NRR rating (dBC) into DBA? subtract 7 from dBC
How long should employers keep audiograms? duration of employment
how long should noise level measurement records be
at least 2 years
kept?
Council for Accreditation in Occupational Hearing Conser-
CAOHC
vation
promote hearing loss prevention (HLPP) through imple-
Mission of CAOHC
menting HCPs
what does National Institute for Occupational Safety and
reccomendations/best practices
Health (NIOSH) make?
OSHA Occupational Safety and Health Administration
MSHA Mine Safety and Health Administration
FRA Federal Railroad Administration
DoD Department of Defense
OSHA, MSHA, FRA, and DoD federal regulations/law
What must state regulations be? equal to or more stringent than federal regulations
Physician, Audiologist, Hearing Technician, Professional
HCP Team Members
Supervisor, Industrial Hygienist, Safety, OHN
noise monitoring, noise exposure control, audio audio-
HCP Components metric monitoring HPDs, worker education/training/mo-
tivation, record keeping, program evaluation
2/9
Action Level/AL-Exposure Limits 85dBA
Enrollment in HCP is mandatory
what action must be taken at 85dBA
Hearing protection must be made available
Permissible Exposure Limit (PEL) 90dBA
Engineering controls are mandatory
When PEL is reached Administrative controls are mandatory
Hearing protection is Mandatory
HCP regulation 29 CFR 1910.95
100% noise dose 90dBA 8hr TWA
OSHA exchange rate 5 dB
NIOSH exchange rate 3 dB
impulse/impact noise <1 second
Difference Add to Higher Value
0 or 1 dB 3dB
Adding dB Rule of Thumb 2 or 3 dB 2dB
4 to 9 dB 1dB
10 dB or more 0dB
functional check/biological calibration daily (if it differs by 10dB or more, do acoustic callibration)
test order 1000-500 -1000 -2000-3000-4000-6000
what settings should a hearing test start at? 30dB; 1000Hz
Bracket procedure down by 10dB, up by 5dB
normal hearing 0-25
what must you get to find the hearing threshold? 2/3 ascending responses
when should you add 20dB to the previous threshold? when changing frequencies
Recordable STS change of 10dB or more AND threshold is >25
, OSHA - form 300 log
how to report STS
MSHA - form 7000
OSHA/FRA - in writing within 21 days
window for reporting STS
MSHA - in writing within 10 days
how to figure out the NRR of dual HPDs add 5dB to the higher NRR
How do you calculate NRR rating (dBC) into DBA? subtract 7 from dBC
How long should employers keep audiograms? duration of employment
how long should noise level measurement records be
at least 2 years
kept?
Council for Accreditation in Occupational Hearing Conser-
CAOHC
vation
promote hearing loss prevention (HLPP) through imple-
Mission of CAOHC
menting HCPs
what does National Institute for Occupational Safety and
reccomendations/best practices
Health (NIOSH) make?
OSHA Occupational Safety and Health Administration
MSHA Mine Safety and Health Administration
FRA Federal Railroad Administration
DoD Department of Defense
OSHA, MSHA, FRA, and DoD federal regulations/law
What must state regulations be? equal to or more stringent than federal regulations
Physician, Audiologist, Hearing Technician, Professional
HCP Team Members
Supervisor, Industrial Hygienist, Safety, OHN
noise monitoring, noise exposure control, audio audio-
HCP Components metric monitoring HPDs, worker education/training/mo-
tivation, record keeping, program evaluation
2/9
