You arrive at the fill site, while another MWS apparatus is being filled at the filling source. What should you do?

• A. Proceed immediately to fill
• B. Position or stage your apparatus a safe distance and maintain an orderly fill line
• C. Ignore and wait
• D. Leave the site

Answer: (B)

When another MWS unit is actively being filled, the priority is a safe and orderly operation at the fill site. You should not crowd the source or rush to connect. Instead, position your apparatus at a safe distance and establish an orderly fill line. This keeps the work area clear of bottlenecks and trip hazards, prevents hose tangling or interference with the active fill, and allows the other operator and your crew to work without unnecessary risk. It also ensures you’re ready to connect when the fill for your unit is next in line, following any established marshalling signals or procedures. Proceeding directly to fill or leaving the site would create hazards or delays, while ignoring the situation isn’t appropriate—staging safely and keeping a proper line is the correct approach.