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Jenkins Academy of Applied Technology

HCP-001-GI — Learner reference

Hearing Conservation and Noise · v1.0.0 · October 21, 2026

Learn how noise harms hearing. Understand the general-industry noise program, hearing protection, hearing tests and when to ask for help. This is an online knowledge core. The employer adds the actual work, noise checks, fitting and other required steps. Special sectors need separate scope review. Allow about 45–60 minutes, at your own pace.

Actual employer scope and noise assessment, effective controls, suitable protection and initial fitting/supervised use, device/task instruction and applicable audiometric testing, notification, follow-up and records remain separate. Apply actual State Plan additions and employer policy.

Level-duration examples

The following table reproduces the listed level-duration pairs in Table G-16 and construction Table D-2. GI noise-dose computation also uses mandatory Appendix A. This is not a personal work clearance. Combined exposures, peaks, actual shifts and governing criteria require the proper assessment.

Duration per day, hoursSound level, dBA slow response
890
692
495
397
2100
1.5102
1105
0.5110
0.25 or less115

1. Start with your work and the hearing program

By the end: Separate this knowledge course from the actual employer hearing-conservation program.

A maintenance team is ready to enter a loud room. One worker has passed an online course. That pass records knowledge. It does not measure the room, choose a protector, fit it or complete a hearing test. Those parts of the work plan still need actual evidence.

This track covers workers in general industry under the federal noise rule, 1910.95. It explains the hearing-conservation program for covered employees. The employer must determine the actual activity, exposure and governing rules. A job title or industry code alone does not settle every task.

Construction uses a different track. Agriculture, maritime and other special work need their own scope review. Paragraph 1910.95(o) excludes oil and gas well drilling and servicing employers from paragraphs (c) through (n). That is not a blanket exemption from noise protection.

Before noisy work, know the employer program contact, the assessed task, the working controls and the required protection. Obtain instruction on the actual devices and ask about any unclear limit. Training is one part of protection; it does not replace quieter equipment or effective controls.

Use the course reader in a safe, quiet setting. The spoken lesson and its written text teach the same material. Course audio, music headphones and a passing score do not provide hearing protection.

Basis: 1910.95(a)–(c), (i), (k), (o)

2. Noise can harm hearing before you notice

By the end: Recognize possible harm and respond to a concern without waiting for a test.

A worker leaves a loud task with ringing ears. Sounds seem dull. The crew says this happens to everyone. Treat the report as a warning to review the exposure and protection. Do not use it as proof that the work is safe.

Loud noise can damage the small structures that help you hear. Damage can build up over time. A very loud event can also cause harm. Noise-related hearing loss can be permanent. Getting used to a sound does not mean your ears are protected.

Noise can also make speech, alarms and other warning sounds harder to hear. Work with the employer to plan safe communication. A worker should not have to choose between keeping protection on and hearing a safety instruction.

Report ringing, muffled hearing, pain or a sudden hearing change through the workplace route. Move out of harmful exposure safely and seek appropriate medical advice promptly for a sudden change or injury. This course does not diagnose the cause. Do not wait for the next yearly test to report a new problem.

Loud hobbies and some chemical exposures can add to hearing risks. Tell the appropriate health professional about relevant concerns privately. Keep clinical details out of crew discussions and course messages.

Basis: 1910.95(k)(3)(i); (g)(8); OSHA/NIOSH hearing-loss guidance

3. Know the action level and exposure limits

By the end: Distinguish the program trigger from the permissible exposure limit.

Noise risk depends on how loud the sound is and how long exposure lasts. A dBA value uses a scale that weights sound for hearing. A time-weighted average, or TWA, describes exposure over a stated time. One instant reading is not automatically an eight-hour TWA.

For covered general-industry workers, the hearing-conservation action level is an eight-hour TWA of 85 dBA, equal to 50 percent noise dose under the OSHA method. Determine program inclusion without taking credit for hearing protectors. Supplying plugs does not remove the worker from the program.

The federal noise permissible exposure limit includes 90 dBA for eight hours in Table G-16. At 95 dBA the table allows four hours; at 100 dBA, two hours. Periods at different levels add together. These examples do not replace the complete table, dose method or assessment of unusual shifts.

The 85 dBA program trigger and the 90 dBA exposure limit serve different purposes. Being below 90 does not mean no hearing-conservation duties or no risk. The employer or State Plan may require more protective measures.

Know where the employer requires protection. General-industry use duties include exposure requiring PPE under the controls rule, applicable mobile-van baseline delay, and workers at or above the action level who have an STS. The employer can require protection sooner under its own policy. Do not decide a noisy task is cleared from one number.

Basis: 1910.95(a)–(d), (i)–(k); Appendix A

4. Make the exposure assessment represent real work

By the end: Explain why task and shift details matter to monitoring.

A check made while a machine idles can miss the noise from loaded work. Tell the noise assessor what happens during each task. Include setup, work, cleanup and repairs. Explain where you move and how long the noise lasts.

When noise may reach the action level, the employer must measure it. The plan must find the workers who need the program. It must also help the employer choose suitable protection. The tools used to measure noise must be calibrated and set up for the right method.

The rule includes steady, changing and impulse noise from 80 to 130 dB in the measurements. When movement or noise changes make area checks unsuitable, the employer must use samples that reflect a worker’s own noise. Equivalent area results can be used if the employer can show they work as well.

Follow the assessor’s directions. Do not cover the measuring device or change your work to make a result look lower. A phone screen or a value in a tool brochure alone does not show the noise from your whole job.

Covered workers must get their monitoring results. Workers or their representatives must have the chance required by the rule to observe the checks. Ask what the result means. Report changes that could add workers to the program or make their protectors too weak for the new noise.

Basis: 1910.95(d)–(f); Appendix A

5. Reduce noise at the source

By the end: Use controls and protection as parts of one work plan.

A noise enclosure has a broken seal. The crew normally wears plugs nearby. That does not make the broken control acceptable. Pause and have the plan checked. Restore the control or arrange another safe method before relying on the plan.

Quieter work may start with a new process or a quieter tool. Other controls can enclose a source, damp sound, keep it farther away or keep equipment in good repair. Work schedules may limit time in noise. They must account for each worker’s combined noise, not just one task.

When noise exceeds the table limits, the employer must use feasible engineering or administrative controls. If these do not reduce noise to the table limits, suitable PPE must also be provided and used. A training record cannot replace this duty.

Here is a dose example, not permission to work. Two hours at 95 dBA uses half of the four-hour reference time. One hour at 100 dBA uses half of the two-hour reference time. Together they reach 100 percent dose. Other noise still needs to be added in the right way. Have the assessor check the real work plan.

The rule recommends that impulse or impact noise not exceed 140 dB peak. A peak is not the same as a dBA average. Have high peaks or unclear noise checked. Do not assume a short loud event is safe.

Basis: 1910.95(a)–(b), (j); Appendix A

6. Choose protection for the actual noise

By the end: Explain why a package rating alone does not establish protection.

A worker finds a box of earplugs with a large Noise Reduction Rating, or NRR. That rating does not prove how much protection this worker gets. The employer must select suitable protection for the actual noise, worker and task.

Earplugs fit in the ear canal. Earmuffs seal around the ears. Each type has benefits and limits. Plugs may suit tight work spaces but depend on correct insertion and clean handling. Muffs can be easier to see and check, but glasses, hair or other equipment can break the seal. Comfort matters because protection must be used correctly for the exposure.

Attenuation means reduction in sound. The noise assessor evaluates whether a device provides enough reduction in the specific environment. Do not subtract the label NRR directly from any sound reading. Do not add plug and muff ratings together. Dual protection needs its own evaluation.

Consumer noise-canceling earbuds are not a substitute for evaluated hearing protection. Music volume and a quiet feeling are not proof of adequate attenuation. Use the actual employer-approved model, instructions and replacement supply.

The employer provides suitable choices at no cost and replaces them as needed. Ask for another suitable option if the device cannot fit with your other PPE. Under the control rule, protection must reduce the eight-hour TWA to 90 dBA or below. For workers with an STS, the target is 85 dBA or below. The employer may set a stricter target.

Basis: 1910.95(i)–(j), (k)(3)(ii); Appendix B

7. Fit protection with the rest of your PPE

By the end: Explain and demonstrate the fitting steps for the actual assigned device.

A worker puts on muffs, then adds safety glasses with thick arms. The seal changes. Protection must work with all of the required equipment. Do not remove eye protection to fix a hearing-protection conflict. Ask for a suitable, compatible solution.

Follow the instructions for the exact device. For roll-down foam plugs, the instructions often include rolling the plug, positioning the ear, inserting it and holding it as it expands. These steps do not apply to every type of plug. Use the actual manufacturer method and the trainer’s guidance. Never force a device into a painful ear.

For muffs, check cushions, headband adjustment and a full seal around each ear. Keep hair, clothing and other items out of the seal. Do not bend, modify or interchange parts without approval. A helmet-mounted muff must suit the actual helmet and mounting system.

The employer must ensure proper initial fitting and supervise correct use. Show the actual fitting steps and let the assigned trainer correct gaps before you rely on the device.

Individual attenuation fit testing can help check real protection. It may be part of the employer’s program. This core does not describe a universal federal annual hearing-protector fit-test requirement. A lesson check is not an actual fitting or an attenuation test.

Basis: 1910.95(i)(4)–(5), (j), (k)(3)(ii)

8. Use, inspect and care for protection

By the end: Keep suitable protection in use and handle a defect or communication problem safely.

Fit protection before entering the designated noisy task or area. Keep it in place throughout the exposure required by the work plan. Brief periods without protection can greatly reduce the protection gained over the task. Move to a safe, quieter place before removing it.

Check the actual device before use. Look for damaged cushions, a weak or bent band, dirty or worn plugs, missing parts and signs that the fit has changed. Follow the manufacturer’s cleaning and replacement instructions. Some plugs are single use. Others can be cleaned only by an approved method.

Store reusable protection where it stays clean, dry and protected from damage. Do not use solvents, heat or makeshift repairs unless the instructions permit them. Obtain a suitable replacement when the device cannot be used correctly. Report a shortage rather than starting the task with damaged equipment.

If an alarm, radio message or instruction cannot be understood, follow the agreed safe communication and stop-work plan. Do not lift a muff or remove a plug while staying in the harmful noise. The team may need a different approved communication system, signals or a quieter discussion point.

The employer must review changes in noise, tools, tasks, duration or PPE. A familiar protector is not proof that a changed task is covered. Report the change and confirm controls before continuing.

Basis: 1910.95(i)–(k); actual device instructions

9. Understand the purpose of a hearing test

By the end: Describe what happens in audiometry and what the results can help show.

An audiogram is a record of how soft a sound you can hear at each tested tone. A baseline is the starting test. Later tests are compared with it to look for changes. The tests help find a need for follow-up. They do not reduce noise or replace controls.

For a typical test, you sit in a suitable test space and wear test earphones. You respond when you hear a tone. The provider checks each ear at the required frequencies. Ask for help if the steps are unclear. Report a problem with the earphones or test space.

The employer must make the covered hearing-test program available at no cost. The rule lists who may do the tests. This includes certain health professionals and technicians with the required skills. A technician must work under the required professional responsibility. This course does not train you to test coworkers or read clinical results.

Good tests need the right room and tools. The tools need proper checks and calibration. The employer and provider arrange these steps. Booking a test is not proof that a valid test was done.

Talk to the provider privately about ear pain or a hearing change. Ask how to get your results and raise questions. An earlier normal test is not a reason to skip protection.

Basis: 1910.95(g)–(h), (k)(3)(iii); Appendices C–E

10. Keep baseline and annual tests on schedule

By the end: Explain the general-industry baseline deadline and preparation rules.

For a covered worker, the employer normally must get a valid baseline within six months of the first noise exposure at or above the action level. Tell the program contact when that work began. A new supervisor does not change the due date.

The rule allows a mobile-test-van exception. Under it, the baseline must be done within one year. If the test happens after six months, the worker must wear hearing protection during noise exposure beyond those six months until the baseline is done. Other required protection and stronger employer rules still apply.

Before a baseline test, the rule calls for at least 14 hours without workplace noise. Hearing protectors may be used instead of that break from workplace noise. The employer must also tell workers to avoid high noise outside work for the 14 hours before the test. Follow any added state or provider instructions.

After the baseline, workers still at or above the action level need a new hearing test at least each year. The federal 14-hour step described here is for the baseline. Do not assume the same legal rule applies to every later test. Follow the provider’s actual instructions.

Tell the contact if you cannot attend or did not follow the steps before the test. Arrange the next step. Do not mark a test complete from a booking, a course result or a calendar entry.

Basis: 1910.95(g)(5)–(6), (i)(2)(ii)(A)

11. Respond to a standard threshold shift

By the end: Explain notification and follow-up while keeping clinical decisions with the right professional.

A standard threshold shift is called an STS. It is a defined change from the baseline hearing test. The rule uses an average change of 10 dB or more at 2000, 3000 and 4000 Hz in either ear. A change at just one tone is not the same test. The proper review process determines the result.

The annual test is compared with the baseline. The employer may get a retest within 30 days and use it as the annual test. A problem result needs the specified health professional’s review. Do not diagnose a shift or change a baseline from a course example.

When an STS is determined, the worker must get written notice within 21 days of that determination. A retest and written notice are separate steps. Ask about the private notice and follow-up. A new booking alone does not close the issue.

The employer must take the fitting, training and use steps that apply. There is an exception if a physician makes the specified finding that the shift is not work related or made worse by work noise. For existing users, the steps include refitting and retraining. Provide stronger protection if needed. For workers with an STS, protection must reduce the eight-hour TWA to 85 dBA or below.

The employer also reviews noise and controls and arranges referral when needed. Do not blame the worker by default. Only the proper health professional can make the allowed baseline change. Keep test details in the private record process.

Basis: 1910.95(g)(7)–(10), (i)–(j)

12. Keep training, protection and hearing records distinct

By the end: Identify annual instruction, worker information access and separate records.

Covered workers take hearing-conservation training each year. The information must stay current when work processes or protection change. Ask for clear steps for your own tools and protectors. Resolve a gap before relying on a new method.

The training covers three groups of topics. Learn how noise affects hearing. Learn why protection is used, its benefits and limits, how much sound it can reduce, and how to choose, fit, use and care for it. Learn why hearing tests are done and what happens during a test.

Explain the key steps in your own words. Show the actual fitting method as well as taking the quiz. Attendance alone does not prove that a device fits or gives enough protection.

The employer must make the standard available to affected workers or their representatives and post a copy at work. Other required materials must also be provided under the rule. Ask where to find the standard, your noise result and the program contact.

Under 1910.95(m), keep noise measurement records for two years. Keep hearing-test records for the affected worker’s time in that employment. Access and record-transfer duties also apply. Do not give every file one made-up retention period.

Your Academy record shows online knowledge and attempts. The employer keeps the real work, fitting, noise and hearing-test evidence through the right process. Keep audiograms, diagnoses and other private hearing details out of course discussions and ordinary LMS notes.

Basis: 1910.95(k)–(m); 1910.1020 access provisions

Primary sources reviewed October 21, 2026

Federal core only. The employer must confirm actual work, applicable State Plan and other requirements. NIOSH material is guidance; it is not substituted for OSHA’s legal criteria.

Development inputs: training inventory TR-009; SHP-008_Noise_Exposure_Hearing_Conservation_Program_v0.1.html, approved development template, current Library version 1; RAVS_Requirements (41).pdf, exported July 22, 2022, ten unique historical review questions. Historical employer answers, page numbers and review approvals are not transferred. Template approval is not employer adoption or course validation. The historical Cal/OSHA references need current jurisdiction-specific review.