NFPA D/O Mobile Water Supply study plan

Compute fire flow for a 2,000 ft² single-family dwelling using the NFF formula and the Iowa rate-of-flow method, then reconcile the two results and explain the difference in writing.

Convert between gallons, cubic feet, pounds of water, and tons of water for five tank sizes, showing each conversion step.

Calculate static, residual, and flow pressures from a nozzle pressure and friction loss scenario, and identify which pressure reading indicates a supply problem.

Diagram the water path through a mobile water supply apparatus from tank fill to pump discharge to dump valve, labeling every component and valve.

List the tank-to-pump and pump-to-tank piping requirements and tank baffling considerations for a 2,500-gallon apparatus, citing the applicable NFPA standard by number and edition year.

Calculate the water shuttle flow rate for a given round-trip time, tank size, and number of apparatus, then solve for the number of apparatus needed to hit a target flow.

Determine the fill-site and dump-site travel times that limit shuttle output, and identify which leg of the route to shorten first.

Compute total water delivered over a 2-hour incident at a stated shuttle rate, accounting for the initial fill and the final dump.

Compare the required fire flow for a target hazard against the shuttle output you calculated, and state whether the plan meets the demand.

Explain how tank size, dump rate, and fill rate each cap shuttle performance, and rank them by impact for a specific scenario.

Select a dump site for three described occupancies (a cul-de-sac, a highway shoulder, and a rural driveway) and justify each choice against access, turnaround, and water delivery criteria.

Lay out a portable dump tank operation, including tank placement, hard suction or dump valve alignment, and the sequence for swapping a full tank for an empty one.

Sequence a tanker dump cycle from arrival through dump, tank swap, and departure, and state the target time for each step.

Identify three hazards at a dump site (soft ground, traffic, apparatus movement) and write the control for each.

Describe how a dump site that cannot support the full shuttle rate should be reported to the water supply officer and what alternatives to propose.

Set up a fill site from a pressurized hydrant, including hydrant wrench use, steamer connection, gate valve, and fill-line routing, and list the steps in order.

Calculate fill time for a 2,000-gallon tank at a given fill rate, then determine whether the hydrant can support the number of apparatus assigned to it.

Perform a documented apparatus readiness inspection covering tires, brakes, lights, pump, tank, valves, and water level, and record pass or fail for each item.

Build a maintenance schedule for a mobile water supply apparatus that covers daily, weekly, monthly, and annual tasks, and assign each to a responsible role.

Explain how a low tank level, a stuck dump valve, or an inoperative tank-fill line would be detected during inspection and what the corrective action is.

Describe the emergency-vehicle operator's legal and departmental responsibilities during a response, including due regard for safety and the limits of emergency privileges.

Explain how speed, weight, and load shift affect stopping distance and rollover risk for a partially filled tanker, and apply that to a curve and a downgrade scenario.

Write the radio traffic for a water supply request, including location, access, water needed, and fill and dump site status, in the standard order.

Identify the command roles in a water shuttle operation and state who assigns dump sites, fill sites, and traffic control.

List the defensive driving adjustments for rain, ice, and night operations with a loaded apparatus, and connect each to a specific crash cause.

Explain the difference between relay pumping and dual pumping, and state when each is the correct choice for a water supply problem.

Calculate the maximum distance a relay can cover given pump capacity, hose size, and target flow, and identify where the next relay pumper must be placed.

Describe the setup for dual pumping from a static source, including suction arrangement, discharge manifolds, and pressure matching between pumpers.

Identify the components that fail most often in relay operations (intake strainers, relief valves, hose couplings) and the inspection that catches each.

Explain how a pressure relief valve and a tank fill line protect the apparatus during relay and dual pumping.

Solve a full-scenario problem that starts with a target fire flow, sizes the shuttle, selects fill and dump sites, and states the number of apparatus and hose required.

Recalculate the same scenario with one apparatus out of service and state the effect on delivered flow.

Explain how to expand the shuttle when the incident escalates, including additional fill sites, tanker staging, and traffic control.

Identify the point at which a shuttle should be replaced by a relay or a larger-diameter supply line, and justify the switch with numbers.

Review your week 2 and week 3 deliverables and correct any calculation or selection errors you find.

Complete a timed 100-question practice set across all nine domains and score it by domain.

Review every missed question and write the correct concept and the reason for the error for each.

Re-derive the five core formulas (fire flow, shuttle rate, fill time, relay distance, friction loss) from memory without notes.

Re-inspect the apparatus checklist and maintenance calendar from week 4 and update anything that has changed.

State the safety and command responsibilities for a water shuttle in a five-minute verbal summary.