Module 1: Introduction to Hearing Conservation

• Importance of protecting hearing in the workplace
• Anatomy of the ear and how hearing works
• Overview of hearing loss types (temporary, permanent, noise-induced)

Module 2: Understanding Noise Hazards

• Common sources of occupational noise
• Noise exposure levels and duration effects
• Signs and symptoms of overexposure

Module 3: Regulatory Standards and Requirements

• OSHA, ISO, and local noise exposure limits
• Permissible exposure levels (PEL) and action levels
• Employer and employee responsibilities

Module 4: Noise Measurement and Assessment

• How noise levels are measured (dB, frequency)
• Use of sound level meters and dosimeters
• Conducting workplace noise surveys

Module 5: Effects of Noise on Health and Safety

• Hearing-related health issues (tinnitus, deafness)
• Non-auditory effects (fatigue, stress, reduced concentration)
• Impact on communication and hazard awareness

Module 6: Hierarchy of Noise Controls

• Elimination, substitution, engineering, and administrative controls
• When to use PPE as the last line of defense
• Examples of engineering noise reduction methods

Module 7: Types of Hearing Protection Devices (HPDs)

• Earplugs, earmuffs, canal caps, and custom-molded protectors
• Materials and design variations
• Advantages and limitations of each type

Module 8: Selection and Fit of Hearing Protection

• Choosing the right protection based on noise levels
• Noise Reduction Rating (NRR) and attenuation
• Proper insertion, adjustment, and fit testing

Module 9: Care, Maintenance, and Storage

• Cleaning and hygiene practices for reusable devices
• Storage to prevent contamination or damage
• Replacement schedules and inspection routines

Module 10: Training and Employee Involvement

• Educating workers on risks and protection
• Demonstrating correct use of HPDs
• Encouraging participation and feedback

Module 11: Audiometric Testing and Health Monitoring

• Purpose and process of hearing tests
• Baseline and periodic audiograms
• Interpreting results and taking corrective actions

Module 12: Building a Hearing Conservation Program

• Key components of an effective hearing conservation plan
• Recordkeeping and compliance tracking
• Promoting a long-term culture of hearing safety