What is required on a P-100 pump without direct weather deck access?

For a P-100 pump without direct weather deck access, having an engine exhaust hose is essential. The reason for this requirement is to safely vent exhaust gases away from the pump and the surrounding area. This minimizes the risk of accumulating harmful fumes, which can pose safety hazards to personnel operating or working near the pump.

In a situation where the pump is located in a space not directly exposed to the elements, it becomes particularly important to ensure proper ventilation. The engine exhaust hose effectively channels exhaust away from the pump, ensuring compliance with safety standards and preventing the potential buildup of dangerous gases, which could endanger the health and safety of operators.

The other options, while important in different contexts, do not specifically address the immediate safety concern of exhaust fume management in enclosed or poorly ventilated spaces. For example, a fuel line is necessary for operation, but it does not mitigate safety risks related to exhaust gases. Similarly, a water hose is important for pump operation to ensure it has the necessary water supply, while a pressure gauge is crucial for monitoring pump pressure but does not relate directly to the safety of exhaust management. Thus, the engine exhaust hose stands out as the critical requirement in this scenario.