attack hose

Question 1

What is the normal length of the attack hose?

Answer 1

fifty feet

This specification is standard for attack hoses used in fire operations.

Question 2

What material are the couplings of the attack hose made from?

Answer 2

lightweight aluminum

Couplings are also gold anodized for durability.

Question 3

What is the service testing pressure for the attack hose?

Answer 3

400 psi

This pressure is crucial for ensuring the hose’s integrity during operations.

Question 4

What is the weight of a fifty-foot length of 1 3⁄4” attack hose?

Answer 4

approximately 17 pounds

The weight varies based on the diameter of the hose.

Question 5

What is the friction loss per 100’ of 2 1⁄2” attack hose?

Answer 5

approximately 12 psi

Friction loss affects the pressure and flow rate during firefighting operations.

Question 6

What are the orifice sizes for the Task Force Tip smooth bore nozzle for 1 3⁄4” attack hose?

Answer 6

• 7/8”
• 15/16”

These sizes are operated at 50 psi nozzle pressure.

Question 7

What is the gpm produced by the 15/16” tip when operated at the proper nozzle pressure?

Answer 7

185 gpm

This flow rate is essential for effective firefighting.

Question 8

What is the proper procedure for loading the hose after fire operations?

Answer 8

• Drain the hose
• Decontaminate the hose
• Check for defects
• Flat load in single or double-layer configuration

Proper care ensures the longevity and reliability of the hose.

Question 9

True or false: The hose should be kept out of direct flame exposure during handling.

Answer 9

TRUE

This is to prevent damage to the hose jacket.

Question 10

What should be done if an inadequate stream is noticed while using the fixed-gallonage fog nozzle?

Answer 10

Perform the ‘flush out’ procedure

This procedure helps clear obstructions in the nozzle.

Question 11

What is the minimum frequency for inspecting and cleaning the attack hose and nozzles?

Answer 11

twice a year (April and September)

Regular inspections are crucial for maintaining operational readiness.

Question 12

What should be used to clean the hose?

Answer 12

• Warm water
• Mild detergent

These materials help remove contaminants without damaging the hose.

Question 13

What is the weight of a fifty-foot length of 2 1⁄2” attack hose?

Answer 13

approximately 24 pounds

This weight is important for handling and operational considerations.

Question 14

What is the nozzle pressure for Metro 1 fixed-gallonage fog nozzles?

Answer 14

75 psi

This pressure is necessary for optimal performance.

Question 15

What should be done if the hose has been exposed to hazardous materials?

Answer 15

Decontaminate by the method approved for the contaminant

Safety protocols must be followed to ensure the safety of personnel.

Question 16

What is the friction loss per 100’ of 1 3⁄4” attack hose with fixed-gallonage nozzles?

Answer 16

approximately 26 psi

Understanding friction loss is critical for effective firefighting.