COHC study plan

Map each paragraph of 29 CFR 1910.95 from (a) through (q) to the program element it governs, naming the specific employer action and any numeric trigger attached to it

Separate the 85 dBA action level from the 90 dBA permissible exposure limit and list which program components each threshold switches on

Sequence the components of a hearing conservation program from monitoring through recordkeeping, stating what each component hands to the next

Identify the testing, notification, training, and record-retention deadlines and durations a compliance inspector would check first

Compute 8-hour time-weighted averages and noise dose from sample dosimeter readings using both the 5 dB and 3 dB exchange rates, and explain why the two results diverge

Differentiate A-, C-, and Z-weighting and state which network applies to compliance sampling versus hearing protector attenuation work

Compare sound level meter sampling with dosimeter sampling, covering slow and fast response, threshold settings, and criterion level selection

Diagnose frequent sampling errors such as microphone placement, wind and clothing noise, and sampling periods that miss the loudest tasks

Calculate a standard threshold shift from paired baseline and annual audiograms using the 1910.95(g)(10) procedure, including the age-correction step

Apply the criteria that decide when a baseline must be revised and when a shift becomes recordable on the injury and illness log

Classify audiometric configurations such as noise notch, conductive loss, sensorineural loss, and asymmetry, and link each pattern to its likely cause

Write out the follow-up chain triggered by a standard threshold shift: retest timing, written notification, protector refitting, and referral

Compute noise reduction rating-adjusted exposure with the A-weighting correction and apply the OSHA and NIOSH derating factors to the same protector

Select a protector type for five different exposure and communication situations and justify each choice on attenuation, comfort, and compatibility grounds

Compare fit-test approaches including field attenuation estimation, microphone-in-real-ear, and subjective methods, and interpret a personal attenuation rating

Describe correct insertion, care, and the training points that determine whether laboratory attenuation is achieved in the field

Trace the sound path from pinna to auditory nerve and state the function of each structure along the route

Explain how outer hair cell damage produces the classic 3 to 6 kHz notch and the loudness recruitment that accompanies it

Distinguish temporary threshold shift, permanent threshold shift, acoustic trauma, and noise-induced hearing loss by onset, recovery, and audiometric signature

Relate individual risk modifiers such as age, ototoxic exposures, and vibration to differences in susceptibility across workers

Sequence the pure-tone test from subject instruction through threshold determination, including the order of frequencies and the order in which ears are tested

State the maximum permissible ambient noise levels for audiometric test rooms and explain when the occluded-ear correction applies

Evaluate a completed test record for validity using criteria for false responses, tester technique, and test-retest reliability

Identify the equipment, environment, and documentation requirements that 1910.95 places on audiometric testing

Distinguish acoustic, exhaustive, and biological calibration by purpose, interval, and who is qualified to perform each

Build a schedule that satisfies the annual audiometer calibration requirement and the daily listening check requirement, including tolerance limits

Walk through the biological check procedure on a described system and define the pass or fail tolerance for a reference listener

Troubleshoot common faults such as threshold drift, elevated ambient noise, leaking earphone cushions, and faulty attenuators

Outline a training session that covers every content element required by 1910.95(k) and adapt it for a mixed-literacy, multilingual workforce

State the retention, transfer, and access rules for audiometric test records, noise exposure measurements, and training documentation

Choose three program-evaluation metrics such as standard threshold shift rate, protector use rate, and follow-up completion rate, and interpret what each reveals

Sit a full-length timed practice exam and convert every missed item into a dated final review entry