
Respiratory Protection eTool
Respirator Change Schedules Decision Logic Flowcharts
Text Version
- 5
- For each contaminant present:
- Were data obtained using the same sorbent material?
- Yes - Go to "Were data obtained at similar or higher humidity?"
- No - 5R Go to flowchart 4
- Were data obtained at similar or higher humidity?
- Yes - Go to "Were temperature and work rate similar?"
- No - 5R Go to flowchart 4
- Were temperature and work rate similar?
- Yes - Go to "Are there multiple contaminants present?"
- No - 5R Go to flowchart 4
- Are there multiple contaminants present?
- Yes - Go to "Were data obtained at similar or higher concentrations?"
- No - Calculate the sum of all contaminant concentrations - Go to "Were data obtained at similar or higher concentrations?"
- Were data obtained at similar or higher concentrations?
- Yes - Go to "From breakthrough data obtain projected service life for contaminant based on concentration (total) and humidity"
- No - 5R Go to flowchart 4
- From breakthrough data obtain projected service life for contaminant based on concentration (total) and humidity.
- Adjust service life for number of cartridges and work rate.
- Multiply service life by safety factor.
- Are there additional contaminants to process?
- Yes - Go to "For each contaminant present"
- No - Use the minimum service life calculated as the respirator service life - 7 Go to flowchart 4
