In TARPS, Development Yellow and Red threshold limits in L/m are what values?

• A. Yellow > 12 L/m; Red > 30 L/m
• B. Yellow > 20 L/m; Red > 60 L/m
• C. Yellow > 8 L/m; Red > 16 L/m
• D. Yellow > 12 L/m; Red > 90 L/m

Answer: (A)

In TARPS, development alert levels are tied to ventilation/flow thresholds to signal when risk from gas or heat in a heading is growing. The values shown represent the points at which you escalate action. A yellow alert is triggered when the flow rate exceeds 12 L/m, indicating a warning level where you should review ventilation and control measures. A red alert comes in at a higher risk, when the flow rate exceeds 30 L/m, requiring immediate actions and likely stopping work until the issue is resolved. The other proposed numbers don’t align with these established thresholds, which is why this option is the correct choice.