Which of the following is a key safety step when using a diesel-driven DC pump in a flooded space?

• A. Do not ventilate to save energy
• B. Proper ventilation, grounding, fuel supply, and avoiding ignition sources
• C. Ignore fuel supply
• D. Use lighting to avoid sparks

Answer: (B)

In a flooded space, preventing ignition from diesel vapors requires a combination of ventilation, grounding, fuel handling, and avoidance of ignition sources. Ventilation dilutes and removes flammable vapors, lowering their concentration and the chance of ignition. Grounding helps dissipate static electricity that can build up when fuel moves or hoses are used, preventing a static spark. A properly managed fuel supply reduces leaks and spills and keeps the pump running safely without creating additional vapor hazards. Avoiding ignition sources means using explosion-protected equipment and practices, not relying on ordinary lighting that could spark in a potentially explosive atmosphere. Together, these steps create a safer environment for the diesel-driven pump in a flooded space.