I-C-01 Forward Hose Lay 08/20/2020

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Questions and Answers

When would a 3" hose be used instead of a 5" hose for a forward lay?

When the IC requests it.

When only a small amount of water is needed.

When the flow capabilities are sufficient. (correct)

When there is a greater risk of fire.

What is mandatory when completing a forward lay of 5" hose?

Using only two firefighters.

Employing a four-way valve and a 5" hose manifold. (correct)

Utilizing multiple hydrants simultaneously.

Employing a hose reel setup.

What role is assigned to the firefighter behind the driver/operator (D/O) during suppression operations?

Nozzle Firefighter

Hydrant Firefighter (correct)

Unit Officer-in-Charge (OIC)

Safety Engineer

What action should be prioritized for charging supply lines when possible?

Radio communication Signup and view all the answers

Which supply line layout method is not mentioned as one of the three methods?

Base Lay Signup and view all the answers

Who holds the responsibility to review and update the supply line procedure?

Assistant Fire Chief of Operations or designee Signup and view all the answers

In what scenario would visual signals be used to communicate with hydrants?

When radio communication is impeded. Signup and view all the answers

What is a key characteristic of a split lay method in water supply evolution?

Requires two apparatus to establish a single supply line. Signup and view all the answers

What is the primary purpose of connecting a double female coupling at the hydrant?

To create a secure connection for a male coupling Signup and view all the answers

Which safety procedure is essential before opening the hydrant after confirming connections?

Ensure all valves are shut Signup and view all the answers

What is the recommended action if the Fire Department Connection (FDC) is not usable?

Make preparations to supply the system via alternate means Signup and view all the answers

During the operation, what should be done to ensure optimal pressure monitoring?

Maintain a minimum residual intake pressure of 20 psi Signup and view all the answers

Which of the following equipment is NOT listed as part of the minimum inventory for the hydrant bag?

Pressure gauge Signup and view all the answers

What is the result of incorrectly turning the handle on the hydra-assist?

It results in complete shut-off of the hydrant supply Signup and view all the answers

What should the #1 Unit OIC do after supplying another apparatus?

Determine the best position for subsequent operations Signup and view all the answers

Why should longer sections of 5" hose be avoided in the setup?

It may hinder hose movement and connection efficiency Signup and view all the answers

Which step should be performed first when using the hydra-assist to boost pressure?

Engage the pump and secure the apparatus Signup and view all the answers

Which position assists in connecting the supply hose to the portable hydrant?

#2 - D/O Signup and view all the answers

What is a critical first step for the Hydrant FF after the order to open the hydrant?

Connect the hose to the bed Signup and view all the answers

What is the essential reason for using a gated wye during hydrant operations?

To split a single water source into multiple lines Signup and view all the answers

Why is a rubber mallet included in the hydrant bag inventory?

To adjust fittings without damaging them Signup and view all the answers

What should be done after confirming that all valves on the portable hydrant are shut?

Directly open the hydrant Signup and view all the answers

What is the primary role of the supply apparatus in a hose lay evolution?

To provide a water supply to the attack apparatus. Signup and view all the answers

What should the hydrant firefighter do after checking the hydrant for serviceability?

Signal the driver operator to proceed with the hose lay. Signup and view all the answers

What is the maximum speed at which the driver operator should operate during a forward hose lay?

10 mph Signup and view all the answers

What is the first step for the Nozzle firefighter before deploying an attack line?

Disconnect the 5” hose from the apparatus bed. Signup and view all the answers

Which action is NOT required when the hydrant firefighter opens the hydrant?

Shut down the hydrant after use. Signup and view all the answers

For a forward lay of 3” hose, which statement is true?

It should only be used under full command approval. Signup and view all the answers

Which firefighter is responsible for connecting the supply hose to the portable hydrant?

Driver Operator Signup and view all the answers

What should occur if there are any burst hose lengths during operation?

Report to the Unit OIC and possibly shut down the hydrant. Signup and view all the answers

What action must the Hydrant firefighter ensure when signal #2 proceeds with the forward lay?

Secure the hose to prevent pulling away. Signup and view all the answers

Study Notes

Forward Lay Supply Line Evolutions

Forward lay will primarily use 5” hose unless the Incident Commander (IC) specifies 3" hose for specific flow needs.
Use of a hydra-assist (four-way valve) and 5” hose manifold (portable hydrant) is mandatory for 5” hose lays.
Radio communication is the preferred method for charging supply lines; alternative visual signals are a backup option.

Riding Positions and Responsibilities

Designated riding positions on the suppression apparatus:
- Unit Officer-in-Charge (OIC)
- Driver/Operator (D/O)
- Hydrant Firefighter (behind D/O)
- Nozzle Firefighter (behind OIC)
No personnel allowed to ride on tailboards of Miami-Dade Fire Rescue (MDFR) apparatus.

Types of Hose Lays

Forward lays are one of three methods to lay supply lines, alongside reverse and split lays, chosen based on situational needs.

Definitions

Attack Apparatus: Used to fight fires on the scene.
Split Lay: Involves two apparatus to establish a single supply line.
Supply Apparatus: Provides water supply to the attack apparatus.

Conducting a Single 5" Hose Forward Lay

At the Hydrant:
- OIC orders and supervises the 5” hose lay.
- D/O positions apparatus and awaits signals.
- Hydrant FF checks hydrant serviceability and flows sufficient water.
- Nozzle FF prepares hose, ensuring no excess obstructs the road.
- Hydrant FF secures hose at the hydrant, signals D/O to proceed.
- D/O drives at max 10 mph, maintaining road access.
- Nozzle FF follows, ensures couplings remain connected, and counts sections.
- Hydrant FF connects hydra-assist to hydrant and awaits radio order to open it.
At the Fire Scene:
- OIC determines apparatus spot and evaluates hose needs.
- D/O engages pump and prepares to supply attack lines.
- Nozzle FF disconnects hose and connects to the portable hydrant.
- Hydrant FF polices lines and awaits further assignment.

Forward Lay of 3” Hose

Used only when determined adequate for supply needs, with IC approval.
3” lines typically hand-laid, connecting directly to hydrant discharges and auxiliary intakes, without hydra-assist.

Supplying Another Apparatus

OIC positions the apparatus to optimize hose lengths; D/O assists in hydrant connections and communication.
Nozzle FF connects to portable hydrant and reports lengths laid.

Supplying a Fire Department Connection (FDC)

OIC assesses FDC location and serviceability, planning hose deployment.
D/O and Nozzle FF connect hose from the portable hydrant to FDC.

Boosting Pressure in a Supply Line Using Hydra-Assist

Crew can perform boosting of pressure, positioning apparatus close to hydrant.
Specific connections made from hydra-assist to pump intake and discharge valves.
Monitor residual pressures to avoid apparatus cavitation during boosting.

Hydrant Bag Minimum Equipment Inventory

Hydrant bags must include:
- Combination locking and regular hydrant wrench
- Two 2-½” caps and spanner wrenches
- Two 5” spanner wrenches
- One rubber mallet
- One Florida East Coast (FEC) adaptor
Regular checks of equipment are required daily.

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Description

This quiz focuses on the protocols for laying supply lines in fire incidents, emphasizing the use of 5” and 3” hoses based on the Incident Commander's assessment. Key procedures include the use of hydra-assist valves and 5” hose manifolds for effective water supply. Test your knowledge on these essential firefighting practices.