Guides & Toolkits

Workbook for Designated Substance Assessments 29 366-BPV-01-IMOT © 2024, Workplace Safety & Prevention Services (WSPS) 1 877 494 WSPS (9777) | 905 614 1400 | WSPS.CA Total Number of Employees Exposed: Indicate the number of workers and the job title(s) of the workers that may be exposed to the designated substance. Do not forget to consider workers not actually directly involved with the process, but also those working in the immediate vicinity, or have potential exposure during maintenance and housekeeping, or other non-routine work. This can be verified during the walk-through survey in Worksheet 8. Example: Process Flow Description of task with likelihood of exposure Frequency of Exposure Hours per week Total number of employees exposed: DISPENSING Dispense substance (dry powder) from a 45-liter (10 gal.) drum into small bags using hand shovels. As the powder may become airborne and workers are in close proximity to the substance without personal protective equipment there is a likelihood of an exposure. The task is performed only in the day shift for about 1 hour. Total: 5 hours (Once per day for five days) 3 Material Handlers (direct contact) 2 Packagers (indirect contact but in immediate vicinity) In order to complete this section, decisions and judgments must be made by competent and qualified personnel. The purpose of this worksheet is to summarize information about any existing controls in the workplace that relate to the substance. You may wish to use separate sheets for different process stages. In addition, in the "Future Control Recommendations" column describe any other controls that may be considered in the future at each of the process stages identified in the worksheet. The controls to be considered are summarized below. Existing Control Description & Future Control Recommendations Engineering Controls: Describe here any provisions for isolation or enclosing the process so as to avoid release of the substance into the working environment. Also describe the general ventilation system and any local exhaust hoods. Briefly describe the maintenance procedure for any type of engineering control. For each control, note the location in the workplace. In the right-hand column of the worksheet note any problems that you know about at this stage and any future recommendations you may have for improvement. It may also be useful at this stage to obtain and attach to the worksheet any diagrams of your control systems. These may be available from equipment manufacturers through your purchasing department. Engineering or maintenance personnel also may be able to provide these. In considering engineering controls, you will want to pay particular attention to any steps in the process flow that have identified that an exposure is possible. 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