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Workbook for Designated Substance Assessments 12 366-BPV-01-IMOT © 2024, Workplace Safety & Prevention Services (WSPS) 1 877 494 WSPS (9777) | 905 614 1400 | WSPS.CA SECTION III: ASSESSMENT INTRODUCTION The purpose of an assessment is to determine if the designated substance in the workplace may affect the health of any worker. By now you have already determined that the substance is present in the workplace and that there is a possibility of worker exposure to it. Other factors have to be considered as well. You must determine the length of time that workers are exposed to the substance. It is also important to know the concentration of the substance in the workplace air. The adequacy of existing controls must be established as well. A clear assessment of all of these factors will enable you to determine more accurately if a worker's health may be affected. The assessment of these factors will be made easier by a step-by-step collection of information. You will want information about the process in which the substance is present. You will also need to consider the ways by which the substance can be released into the work environment as well as the ways in which workers may be exposed. The employer is required by the regulation to consult with the Joint Health and Safety Committee (or the Health and Safety Representative); the committee may make recommendations with respect to the assessment. Note: It may not be necessary for small firms to complete Worksheets 3 and 4. These deal with the process flows and small firms might find it easier to deal with task-related exposures. They may therefore proceed to Worksheet 5. The following is a list of some of internal/external resources that you may want to consult when doing your assessment: Workers (for information on worksite conditions, product concerns, personal feelings, opinions regarding their health at any time) Production supervisors (for information on the process, reported problems, etc.) Occupational hygienists, engineers, physicians, nurses Engineers (for information on existing controls, equipment factors, etc.) Purchasing agents (for information on product source, quantities purchased. frequency of purchase) Suppliers (safety data sheets, or SDSs) Medical personnel (for information on physiological effects of the designated substance) WSPS.CA

• Cover
• SECTION VI: REFERENCES
• SECTION V: CONTROL PROGRAMS
• Guidelines For Worksheet 1: Is The Designated Substance Present?
• Guidelines For Worksheet 2: Is Worker Exposure Likely?
• Guidelines For Worksheet 3: Process Description
• Guidelines For Worksheet 4: Walk Through
• Guidelines For Worksheet 5: Walk Through Conclusions
• Guidelines For Worksheet 6: Is A Control Program Necessary?
• SECTION IV: ASSESSMENT CONCLUSION
• Introduction
• Conclusions Worksheet 6: Is A Control Program Necessary?
• SECTION III: ASSESSMENT
• Introduction
• Assessment – Worksheets 3: Process Description
• Assessment – Walk Through Survey
• Assessment – Worksheet 4: Walk Through
• Assessment – Worksheet 5: Walk Through Conclusions
• SECTION II: APPLICATION
• Introduction
• Application – Worksheet 1: Is the Designated Substance Present?
• Application – Worksheet 2: Is Worker Exposure Likely?
• SECTION I: INTRODUCTION
• Purpose of this Workbook
• ASSESSING DESIGNATED SUBSTANCES
• Decision Diagram For Assessing Designated Substances
• Workbook Format