TB 62- 2" High Rise Hose System

Question 1

What are the specifications of the hose itself?

Answer 1

• Single jacket construction utilizing nitrile rubber impregnated synthetic yarn as the cord material
• 50 foot lengths with 1 1/2” couplings
• Ribbed to reduce wear & increase grip
• Shoulder of couplings are tapered to reduce snagging
• Blue in color

Question 2

The high rise hose is susceptible to damage than double jacketed hose as it has a tendency to incur very small punctures, however these punctures will not what?

Answer 2

Tear or increase in size even under extreme pressure

Question 3

Use of this hose for purpose other than hose packs should be avoided, a benefit of this hose, especially when working in the confined spaces of stairwells and interior hallways is what?

Answer 3

Its ability to resist kinks

Question 4

Under pressure, how far can the hose be bent before it will kink?

Answer 4

Within 12 inches before it will kink

Question 5

When supplying the standard 75 psi nozzle pressure to the 1 1/2” 200 gpm tip, your flow will be what?

Answer 5

200 gpm with a friction loss of 35 psi per 100 feet of 2” hose

Question 6

What is the primary objective of a company assigned to attack the fire?

Answer 6

Get one line into operation

Question 7

What does each hose pack consist of?

Answer 7

• Two 50’ sections of lightweight blue hose
• One 1 1/2” complete 200 gpm spray nozzle
• One 2 1/2” x 1 1/2” reducer
• Five 2’ ladder straps

Question 8

What does the pigtail assembly consist of?

Answer 8

• One 8’ section of lightweight 2 1/2” hose
• One 2 1/2” to 1 1/2” gated wye
• One lightweight folding spanner
• Two ladder straps
• One 2 1/2” 60 degree elbow

Question 9

You can begin making the pack with the hose which kind of what?

Answer 9

Either hose rolled, or stretched out straight

Question 10

How are the hose packs fashioned?

Answer 10

Using a 30-45 minute air bottle to form a “U” shaped single layer or double layer pack

Question 11

The single layer method produces a pack _ inches taller than the double layer method

Answer 11

8

Question 12

When assembling the hose pack, the female coupling of the first section of hose should be how many inches below the gauge of the bottle?

Answer 12

10 inches below the gauge of the bottle with the reducer to the female coupling

Question 13

When you reach the male coupling of the second section, attach the nozzle and position it wear?

Answer 13

Base of the pack on the same side as the female coupling you began the pack with

Question 14

To secure the hose pack, place a strap about how many inches above the bottom of the pack on each side?

Answer 14

8 inches

Question 15

Placing the straps eight inches or so above the folds will help prevent what?

Answer 15

Permanent kinks in the hose

Question 16

When completed, how much will the pack weight?

Answer 16

38 pounds

Question 17

What are the approximate dimensions of the pack?

Answer 17

• 40” tall by 22” wide for the single layer pack

- 32” tall by 16 “ wide for the double layer pack

Question 18

How much does the pigtail assemble weight?

Answer 18

10 pounds

Question 19

How is the pigtail made?

Answer 19

By rolling the gated wye inside the hose and elbow

Question 20

Buildings built prior to 1960 were limited to how high an were required to have what kind of system for our use?

Answer 20

Limited to 150 ft
Dry Standpipe (Class I) System

Question 21

Buildings built between 1960 - 1974 were required to have what kind of system?

Answer 21

Combination (Class III) Standpipe System

Question 22

What does Combination (Class III) Standpipe system mean?

Answer 22

• 1 1/2” interior wet standpipes for occupants is supplied by the same riser as the 2 1/2” outlet for our use
• Pressure supplied by on-site fire pump
• May also have 2 1/2” hose with 1” straight tip (located in hose cabinets in stairwells above 4th floor)

Question 23

What kind of standpipe system is required in buildings built since 1974?

Answer 23

Combined Standpipe Sprinkler System

Question 24

What are some specs on the combined standpipe sprinkler system?

Answer 24

-Use the same riser to supply FD outlets and the sprinkler system

Question 25

In a Dry Standpipe (Class I) System, the outlet is located where?

Answer 25

Adjacent to the fire escape, usually directly above the inlets at the street level *building upgraded, outlets have been moved inside to a new enclosed stairwell

Question 26

If you need to extend off a 1 3/4" hose line that you have drop bag, what is the friction loss?

Answer 26

50 psi per each 100 feet of 1 3/4"

Question 27

What is the friction loss if you supply your hose pack from a 1 1/2" line?

Answer 27

approximately 130 psi, prohibitively high

Question 28

In a Dry Standpipe Class I System, if the outlet is adjacent to the fire escape, how can you use the pigtail hose?

Answer 28

The eight foot section can be used to bring the gated wye around so the 1 1/2" outlets are pointed in or at the window, then use one of the straps to secure it to the balcony

Question 29

In a Dry Standpipe Class I System, if the standpipe is in a stairwell, attach the elbow and gated wye directly where?

Answer 29

Directly to the outlet, using the elbow will get the hose coming off the outlet/gated wye down onto the landing instead of sticking out blocking the landing

Question 30

In a Combination Standpipe Class III System, what is a drip-cock used for?

Answer 30

Attached to the outlet to prevent any water that might leak from the valve from getting into the hose while it is stored on the rack

Question 31

In a Combination Standpipe Class III System, has orifice plates specifically engineered to reduce what?

Answer 31

- The flow of water supplied from a particular outlet | - Size of the orifice plate is determined by the static pressure on the supply side of an outlet

Question 32

The higher the pressure in the system, the what in reference to a orifice plate?

Answer 32

- The smaller the inside diameter of the orifice plate will be - Higher pressures will be found on the lower floors of a building - Orifice plate not regulate pressure, it restricts flow

Question 33

In a Combination Standpipe Class III System, where can the orifice plate be found at?

Answer 33

- Soldered to the outlet itself - Behind the gasket on the drip-cock - Soldered to the male end of the drip-cock - Behind the gasket on the 2 1/2" hose

Question 34

What are ways to removed the orifice plate?

Answer 34

- Removing the gasket, removing the orifice plate, and replacing the gasket; or - using a slotted screwdriver or your channel locks as a pry bar to break the plate off of the opening

Question 35

In a Combination Standpipe Class III System, when deploying the hose pack, if the orifice plate has been removed, the outlet should be opened how?

Answer 35

One and One-half turns, then adjusted from there

Question 36

In a Combination Standpipe Class III System, if the orifice plate has not been removed, how should you open the outlet?

Answer 36

Open the valve fully

Question 37

Once the hose pack is loaded, one ff should stay at the gate valve, why?

Answer 37

To insure no one accidentally adjusts your outlet

Question 38

If conditions n the stairwell will not allow you to connect to the standpipe on the fire floor, where can you connect?

Answer 38

On the floor below and easily pull this hose up the stairwell Ideally, flake the hose up the stairs from the fire floor

Question 39

In Combined Standpipe Sprinkler System built since 1974, are required to be what?

Answer 39

Fully sprinklered and also have a standpipe for our use

Question 40

In Combined Standpipe Sprinkler System, utilizes what kind of valve?

Answer 40

Pressure Reducing Valve (PRV)

Question 41

When does the system utilizes a PRV?

Answer 41

When pressure at the outlet exceeds 150 psi

Question 42

Is it possible in new construction to encounter orifice plates on the upper floors where the system pressure falls below 150 psi?

Answer 42

Yes, typically be the top 6 to 8 floors

Question 43

In Combined Standpipe Sprinkler System, when connecting to the system, connect what?

Answer 43

Elbow and gated wye directly to the outlet, open fully!

Question 44

In regards to extending the hose line what are the two methods?

Answer 44

- Laying out pack in stairwell, take nozzle and female coupling of dry line down the hall to the nozzle, shut down nozzle, remove tip and attach coupling, strapping the shut off butt open - Leave hose pack on back of FF, remove the reducer and two of the hose straps, extend line, shut off nozzle on wet line and attach dry line , strapping off shut off butt

Question 45

For maintenance of the hose pack, what should you do after each use?

Answer 45

- Scrub the outer jacket to free it of dirt and fire debris - Drain excess water - Then form pack

Question 46

What is the test pressure of the hose?

Answer 46

300 psi