DO Manual

Questions and Answers

What is the preferred size of supply lines for relay pumping operations due to reduced friction loss?

2.5” supply lines

3” supply lines

4” supply lines

5” supply lines (correct)

When should a relay be established when the attack engine is more than 500’ from the water source?

When using 3” supply line

When using 2.5” supply line

When using 5” supply line (correct)

When using any supply line

Which engine is referred to as the 'source' engine in relay pumping operations?

Engine stationed at the water source (correct)

Engine at the fire scene

Engine with the highest capacity pump

Engine in the relay pumping line

What is the role of the Water Supply Officer (WSO) in relay pumping operations?

To be versed in rural water supply operations and tactics Signup and view all the answers

What should be done with hose lines before they are charged during relay operations?

Place them off to the side of the roadway Signup and view all the answers

Which channel is preferred for water supply communications to avoid interference on the fire scene?

Separate TAC channel Signup and view all the answers

What is the maximum distance for an attack engine from the hydrant when using a 3” supply line to require a relay?

300’ Signup and view all the answers

Which is true about communication in relay pumping operations?

Only one WSO should communicate with the IC Signup and view all the answers

What should be the first step when shutting down a relay pumping operation?

Shut down the attack engine. Signup and view all the answers

Why is spacing of relay engines important?

To have all engines operating at approximately the same RPM. Signup and view all the answers

When should a water shuttle operation be preferred over relay pumping?

When the water source is remote and relay pumping is not practical. Signup and view all the answers

What is a critical role of the Water Supply Officer (WSO) during operations?

To communicate directly with the Incident Commander (IC). Signup and view all the answers

What is a benefit of appointing a Water Supply Officer at a fire scene?

To coordinate ongoing communication between units. Signup and view all the answers

How does pre-incident planning contribute to water shuttle operations?

It helps in making critical decisions during setup. Signup and view all the answers

Which of the following is true about operating methods during a water shuttle?

Coordination is crucial between all units. Signup and view all the answers

What ensures that a water shuttle operation can supply water efficiently?

Assigning a dedicated TAC channel for water supply. Signup and view all the answers

What should the Incident Commander do if large fire flow is required?

Direct the Communications Center to notify the appropriate Water Utility Company. Signup and view all the answers

What is the purpose of the Monthly Hydrant Water Usage Log?

To document all hydrant water usage for various activities. Signup and view all the answers

Who must be notified if a fire hydrant is found to be non-functional?

The Fire Operations Officer and the Water Officer. Signup and view all the answers

In order to obtain water supply information during an emergency, who can the Incident Commander contact?

The Fire Operations Officer or the Water Officer. Signup and view all the answers

What is NOT included in the documentation required for Monthly Hydrant Water Usage Log?

Water used in regular fire response. Signup and view all the answers

Who is responsible for submitting monthly hydrant water usage?

Each Battalion. Signup and view all the answers

What document must be used to report a non-functional fire hydrant?

Fire Hydrant Non-Functional/Out of Service Notice. Signup and view all the answers

How can the size of the water main be determined?

From a Quick Access Survey conducted beforehand. Signup and view all the answers

Study Notes

Relay Pumping Operations

Number of apparatus in a relay depends on lay length and required fire flow.
Apparatus with fire pumps can participate: “source” (water source) and “attack” (fire scene) engines, with “relay” pumpers in between.
Largest capacity pump should be positioned at the water source.
Preferred hose size for relay is 5” supply lines to minimize friction loss and maximize flow rate.
Hose lines must be positioned to the side of the roadway for clear access during an operation.
Establish a relay if the attack engine is over 500’ (5” line) or 300’ (3” line) from the hydrant.
More complex relays may necessitate appointing a Water Supply Officer (WSO) with knowledge of rural water supply tactics.
Communication during relay operations is vital; a dedicated TAC channel for water supply may be beneficial.
The WSO should be the sole communicator with the Incident Commander (IC).
Water supply size and flow information can be sourced from the Communications Center or water department.
In emergencies needing large flows, IC must direct the Communications Center to contact the Water Utility Company; relay specific needs and location.
Monthly water usage documentation for hydrant use required by each Battalion for incidents and training.
Report broken hydrants to the Fire Operations Officer and Water Officer using the specified notice.
Shut down relay operations by turning off the attack engine first, then proceed backward to the source for effective management.

Water Shuttle Operations

A water shuttle operation supplies water when a reliable source is unavailable.
Involves tenders, engines, and brush trucks delivering and reloading water continuously.
Water shuttles are preferable when relay pumping is not feasible; however, relay pumping is often more reliable.
Ongoing radio communication and coordination among units and attack engine is critical.
Appointing a Water Supply Officer may enhance operational efficiency; additional supervisors may be assigned based on incident scale.
A separate TAC channel for water supply operations is also recommended.
Effective setup decisions are crucial for the success of water shuttle operations; pre-incident planning can aid in this process.

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