Controlling Exposures to Hazardous Chemicals New

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1.0 Purpose

2.0 Introduction

3.0 Step One – Identify the Hazards

3.1 WHMIS

3.2 Notations – Occupational Exposure Limits

3.3 Mixtures

4.0 Step Two – Assess the Risk

4.1 Evaluating Worker Exposure

5.0 Step Three – Control the Hazards

5.1 Elimination

5.2 Substitution

5.3 Engineering Controls

5.3.1 Ventilation

5.4 Administrative Controls

5.4.1 Administrative Controls for Ventilation Systems

5.5 Personal Protective Equipment (PPE)

5.5.1 Respirators

5.5.2 Skin Protection

5.5.3 Gloves

5.5.4 Eye and Face Protection

5.5.5 Other PPE

6.0 Step Four – Evaluate the effectiveness of control measures

7.0 Conclusion

References

Appendix 1 – Examples of Regulations in Canada for the Control of Exposure to Biological or Chemical Agents

Appendix 2 – Definitions of Excursion and Peak Limits

Appendix 3 – Examples of Regulatory References to the Hierarchy of Controls

Appendix 4 – Physical and Health Hazard Classes

Appendix 5 – Examples of Scientific Studies Demonstrating the Effectiveness of Ventilation

Appendix 6 – Examples of Regulatory References for Ventilation

Appendix 7 – Examples of Regulatory References for the Use of Approved Respirators

Appendix 8 – Regulatory References for Assigned Protection Factors

Appendix 9 – Examples of Regulatory References for Selecting Respirators

Appendix 10 – Respirator User Seal Checks

Appendix 11 – Examples of Regulatory References for the Use of CSA-Approved Eyewear

Appendix 12 – Examples of Technical Tools and Resources for Assessing Risk

Appendix 13 – Example Chemical Inventory Form

Appendix 14 – Example Risk Assessment Form

Appendix 15 – Spill and Emergency Response Equipment Inventory List

Table 1 Types of Occupational Exposure Limits (OELs)

Table 2 Examples of GHS Signal Words and Hazard Statements

Table 3 NIOSH Skin Notations

Table 4 Mixtures

Table 5 Examples of ventilation resources and standards

Table 6 Comparison of ventilation systems

Table 7 Types of dust collectors

Table 8 Removal of gases and vapours

Table 9 Examples of PPE selection standards

Table 10 Examples of different forms of substances/chemicals

Table 11 Types of cartridges and filters

Table 12 NIOSH Particulate filter rating

Table 13 NIOSH Filter efficiency rating

Table 14 Summary of Assigned Protection Factors (APF) for air-purifying respirators (non-powered)

Table 15 Summary of Assigned Protection Factors (APF) for powered air-purifying respirators

Table 16 Summary of Assigned Protection Factors (APF) for atmosphere-supplying respirators

Table 17 Examples of resources for respirator selection

Table 18 Important terms for chemical protective clothing

Table 19 Examples of resources for chemical protective clothing

Table 20 Examples of different types of gloves

Table 21 Considerations when selecting gloves

Table 22 Examples of resources for chemical gloves selection

Table 23 Summary of eye and face protection

Table 24 ANSI Guidance for eye protection