IH evaluation 3/16/2026

Safety Hazards When Using Equipment

  • Evaluate the risks and hazards present when using equipment, focusing particularly on protective measures and environmental factors.

    • Guard for Sharp Blades
    • Reason: Prevents cuts from sharp blades.
    • Example: Fast rotating blade in power tools.

  • Electrocution Risks

    • Concern about electric shock or electrocution when:
    • Equipment is plugged in without proper ground-fault protection (GFCI).
    • Operating in wet conditions or with damaged cords.

  • Noise Hazards

    • Equipment may produce loud noise levels, contributing to noise-induced hearing loss.
    • Considerations for personal noise protection measures.

  • Particulate Matter

    • Generating dust while cutting materials that may contain carcinogens (e.g., wood dust).
    • Potential risks from cutting materials with hazardous constituents like particle board.

  • Use of Lasers

    • Safety risks associated with laser systems:
    • Risks to eyes if viewed directly.

Introduction to Industrial Hygiene

  • Definition of Industrial Hygiene
    • The anticipation, recognition, evaluation, control, and confirmation of workplace hazards to protect worker health and safety.

Sample Media for Hazard Evaluation

  • Common Chemicals: Consider various chemicals that may be evaluated:
    • Example: Hydrochloric acid, hydrofluoric acid, methanol, grain alcohol.
    • Use of Safety Data Sheets (SDS) for hazard evaluation.
Evaluating Risk of Hydrofluoric Acid (HF Acid)

  • Hazards Presented:

    • Highly corrosive; risks of severe burns and injury from exposure on skin.
    • Can impact the skin and potentially cause systemic health issues.

  • Protective Measures:

    • Use personal protective equipment (PPE) such as gloves and eye protection to prevent exposure.
    • Implement safety practices with consideration to emergency measures.

Evaluation of Industrial Safety Practices

  • Industrial hygienists must evaluate the risk and take measures for:
    • Control Methods: Mechanisms such as guards on machines, GFCIs for electrical safety, and noise protection.
    • Assessing exposure levels and conditions effectively using reliable methods.
Quantitative Exposure Assessment

  • Methodology:

    • Utilizing the Permissible Exposure Limits (PEL), with measurement of exposure through:
    • Air sampling devices for direct reading of hazardous chemicals.
    • Ensuring compliance with OSHA regulations for allowable exposure levels.

  • Sampling Challenges:

    • Challenges in evaluating chemicals with no defined PEL.
    • Comparison to industry standards and historical data for risk assessment.
Risk Assessment Approaches

  • Qualitative Assessment

    • Allows a preliminary understanding of risks without exact measurements:
    • Visual observations and expert judgment can be used to prioritize evaluations.

  • Quantitative Evaluation

    • Collect empirical data to compare actual exposure limits:
    • Conducting systematic assessments with monitoring and analysis.

Control Measures

  • Hierarchy of Controls: Steps to mitigate risks:
    1. Elimination: Remove hazards where possible.
    2. Substitution: Replace hazardous materials with less toxic alternatives.
    3. Engineering Controls: Implement physical measures to isolate employees from hazards (e.g., ventilation systems).
    4. Administrative Controls: Modify work practices and train employees.
    5. Personal Protective Equipment (PPE): Equip workers with necessary protective gear like gloves and respirators.

Case Studies and Practical Applications

Incident Evaluation in Industrial Settings

  • Example of a Fabrication Facility

    • Addressing a hazardous chemical exposure situation by clearly identifying main products:
    • Identify and control exposure to chemicals such as solvents, acids, and other reactive materials.

  • Sample Results Interpretation:

    • Identify acceptable limits for various chemicals:
    • Compare levels of exposure against established thresholds for safety.
Developing Effective Sampling Plans
  • Key Elements:
    • Identify who, what, when, where, why, and how for each proposed sampling.
    • Consider historical data and similar industries for context in risk evaluation.

Learning Outcomes

  • Recognizing the importance of controlling and assessing risks in workplace environments.

    • Importance of integrating safety learning into industrial practices for better outcomes in employee health and safety.

  • Feedback and Adaptation of Practices: Iterate and refocus safety measures based on sampling results and workplace observations, ensuring continued improvement in safety protocols.

  • Interrelationship of Health and Safety Disciplines: Understanding the overlap of industrial hygiene with engineering practices in ensuring a safe work environment.