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Engine Operations > LP # 250 HYDRANTS > Flashcards

LP # 250 HYDRANTS Flashcards

1
Q

What different types of fire hydrants

are in use by the L.A.F.D.?

A

General: Various types of hydrants are in use by
this Department. These hydrants are equipped
with 2 ½” outlets, 4” outlets, or a combination of
both. The outlets conform to National Standard
Thread specification

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2
Q

HOW ARE FIRE HYDRANTS IDENTIFIED?

SFH

A

S.F.H. – Single fire hydrant 2 ½” S.F.H.

and 4” S.F.H

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3
Q

HOW ARE FIRE HYDRANTS IDENTIFIED?

DFH

A

D.F.H. – Double fire hydrant 2 ½” x 4”

D.F.H. and 4” x 4” D.F.H.

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4
Q

HOW ARE FIRE HYDRANTS IDENTIFIED?

SSFH

A

S.S.F.H. – Subsurface fire hydrant

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5
Q

HOW ARE FIRE HYDRANTS IDENTIFIED?

BUFH

A

B.U.F.H. – Built-up fire hydrant is an
assembled unit of 4” or 6” pipe
surmounted by an angle valve with a 2
½” or 4” outlet

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6
Q

HOW ARE PRIVATE HYDRANTS IDENTIFIED?

A

There are certain other hydrants, which will
not conveniently fit into any of the above
categories listed in the above sections. These
are very rare, and for the most part are only on
private water systems or on private property.
These will be identified by the number and size of
outlets

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7
Q

Who is responsible for determining
hydrants over 200/210 PSI? Who
is responsible for the initial painting
of Hydrants over 200/210 PSI?

A

Painting: Station Commanders shall determine
that hydrants with a static pressure over 200/210
PSI have tops painted red. Station members
shall do initial painting of tops

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8
Q

WERE ARE THE REFLECTORS LOCATED IN THE HILLSIDE AREA?

A

In the hill-side areas of the city, the blue
reflectors are located on the street pavement
to indicate all hydrant locations

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9
Q

WERE ARE THE REFLECTORS LOCATED IN THE FLATLAND AREA?

A

In the flatland areas the reflectors shall be
used to indicate only mid-block hydrant
locations, or hydrant locations that are
obstructed from view

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10
Q

HOW ARE THE REFLECTORS LOCATED IN THE PRIVATE AREAS?

A

Private hydrant locations shall be identified in
the same manner dependent upon the need
and with the approval of the individual
responsible for the property

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11
Q

WHO IS RESPONSIBLE FOR THE REPLACEMENT OF THE REFLECTORS?

A

Station personnel shall do the installation and
replacement of hydrant reflectors. Hydrant
reflectors and epoxy are available at Supply
and Maintenance

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12
Q

What is the purpose of the pole

band?

A

Pole Bands:

  1. The purpose of the pole band is to help the
    engine company locate the fire hydrant
  2. The pole band is usually yellow in color and is
    located on the telephone pole closes to the
    fire hydran
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13
Q

Where is Station hydrant district

boundary line located?

A

Station hydrant district boundary lines will be
the centerline of streets, rivers and/or flood
control channels dividing first-in districts of
stations

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14
Q

WHO DO YOU FORWARD RECORD CHANGES TO?

A

Any changes in district boundary lines due to
annexation, detachment, change in first-in
district, etc., stations will make needed
corrections of their respective hydrant records
and forward either F-225 Red Letterhead, or
new F-95 Fire Hydrant Record (2 copies),
whichever is more appropriate, to the
Engineering and hydrant Unit

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15
Q

What is the proper spacing of fire

hydrants IN LOW DENSITY RESIDENTIAL AREAS?

A
  1. Low Density Residential (Homes)

600 feet apart

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16
Q

What is the proper spacing of fire
hydrants IN High Density Residential (Apartments,
Condos) and Residential/Commercial

A
  1. High Density Residential (Apartments,
    Condos) and Residential/Commercial (Mom
    and Pop shops)
    300-450 feet apart
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17
Q

What is the proper spacing of fire

hydrants IN Industrial Commercial

A

Industrial Commercial

300 feet apart

18
Q

When are hydrants permitted to be
used by Fire Department
members?

A

General: Fire Department Personnel shall use
fire hydrants only in performance of their duties,
such as use at fires, drilling, testing, or refilling
apparatus water tanks

19
Q

How shall hydrants be opened?

A

Operation: Hydrants shall be opened and closed
slowly to avoid water hammer. Hydrant valves
are not designed to regulate the volume of flow.
Normally, they shall be fully opened or fully
closed. After use, hydrant valves shall be closed
sufficiently tight to shut off the flow of water, and
the out-let cap replaced

20
Q

Who is responsible for flushing fire

hydrants?

A

C. Flushing: Members shall not open a fire hydrant
for the purpose of flushing or trying to clean out a
main. This is a function of the Department of
Water and Power

21
Q

What shall be done when a fire
hydrant is found inoperative
because of damage, obstruction, or
is being used illegally?

A

Inoperative hydrants: During non-emergency
situations when a hydrant is found to be
inoperative because of damage, obstruction, or is
being used illegally, report the situation at once
to the Hydrant and Access Unit by telephone or if
they cannot be reached report it to OCDS

22
Q

What shall be done when a fire

hydrant is out of service?

A

Out of Service Hydrants: Station Commanders
when notified that a hydrant or main is out of
service, shall Journalize the information and
notify the officer concurred

23
Q

What shall be done when a request
from the public comes into the fire
station regarding any part of the
water system?

A

Requests for hydrant information from civilians:
Members receiving requests from the public for
information concerning any part of the water
system will not attempt to furnish this information,
but will refer the inquirer to the nearest office of
the Department of Water and Power Members receiving any requests in writing and or
about installing, removing, private hydrants,
costs, and water mains to name a few shall
referrer the person to the Hydrant and Access
Unit

24
Q

Who is responsible for testing fire

hydrants?

A

Frequency: A routine test of hydrants shall be
made at least once a year. The maximum period
of time between test periods shall be 12 months.
The time for testing will be determined by the
Battalion Commanders

25
Q

What is the proper procedure for

testing hydrants?

A

Procedure: When practicable, an officer and/or
engineer shall test hydrants
1. Use the standard hydrant testing equipment
2. Open the Globe Valve on test equipment
3. Connect tester to hydrant
4. Fully open the hydrant valve slowly. Note: If
the valve chatters or no water flows after
three full turns ,close hydrant and call the
Hydrant and Access Unit
5. Carefully remove all “verdigris” from the
hydrant stem ; Do not use abrasive material
or lubrication on hydrant stem.

26
Q

What is the proper procedure for

testing hydrants?

A

Disconnect the test equipment from the
hydrant. In case of a double outlet hydrant,
both valves shall be tested
7. Packing nut of valve stem shall be tightened if
necessary to stop leak; Note do not tighten
the packing nut on hydrants having an “O”
ring as packing. This type of hydrant can be
readily identified because the packing nut is screwed tight against the valve assembly and
secured with a pin
8. Clean hydrant nipple with wire brush if
necessary, then replace the cap tightly so that
it cannot be removed by hand
9. Fire/Life Safety Violation may be issued to the
property owner or tenant to remove
obstructing vegetation
10. Indicate with notes on the Form F-70 (Fire
Hydrant Test Record) whether the hydrant is
O.K. or what further attention may be
necessary such as:
a) Any condition that prevents normal and
speedy operation of the hydrant
b) Valve leaking
c) Repacking of stem required
d) Cap missing
e) Obstructing

27
Q

Where is the most recent static

pressure permanently maintained?

A

Static Pressure: The most recent static
pressures will be permanently maintained in the
Hydrant Test Record Book

28
Q

STATIONS ARE NOT REUIRED TO DO WHAT FOR HYDRANTS?

A

Station will not be required to take a static
pressure reading once the static pressure of the
hydrant has been determined, unless notified to
do so by the Hydrant and Access Unit

29
Q

What shall be done when notified of

a new hydrant in your district?

A

New Hydrants: New hydrants shall have their
static pressure entered on F-70(Fire Hydrant
Test Record)

30
Q

What are the different hydrant
reports that are used by the
L.A.F.D.?

A

F - 70 Hydrant Test Record

B. F - 95 Hydrant Record/Report Book

31
Q

Where are extremely high-pressure

hydrants found?

A

Hydrants Extremely High Pressure TOPANGA CANYON FERNWOOD AREA.

32
Q

WHAT DO YOU USE IN AREAS WITH HYDRANTS THAT ARE EXTREMLY HIGH PRESSURE?

A

Before connecting to any red-top or subsurface
hydrant in the Topanga Canyon-
Fernwood area, use a reducing valve

Operate all valves on the hydrant, apparatus,
and hose lines very slowly.

33
Q

HOW ARE THESE HYDRANTS IDENTIFIED?

A

These hydrants are identified with a red top
and/ or a high-pressure sign attached to the
hydrant

34
Q

WHEN DO YOU USE THE HYDRANTS?

A

It is recommended that these hydrants not be
used unless absolutely necessary. When it
becomes necessary, the following procedures
will apply:

35
Q

WHEN USEING HYDRANTS WITH EXTREM HIGH PRESSURES WHEN MAY WATER BE UTILIZED WITH OUT A REDUCING VALVE?

A

Filling apparatus tank from the top and
pumping from this source, or
b) Drafting through a broken connection

36
Q

WERE ARE THE HARD SUCTION AND DRAFTING HYDRANTS LOCATED?

A

Those hydrants located in station 86, 91, and

97’s hydrant district

37
Q

THESE HYDRANTS ARE DESIGNED FOR WHAT?

A

Designed for drafting onlyIdentified with signs hard suction only

38
Q

WHAT ARE RECLAIMED HYDRANTS AND WERE ARE THE LOCATED?

A

Reclaimed water hydrants are usually purple in
color and can be located anywhere in the city but
are usually found in Griffith Park. Do not Drink the
water from the Hydrants

39
Q

WHAT ARE THE HYDRANTS LIKE IN GRIFFITH PARK?

A

Griffith Park Hydrants
Griffith Park hydrants are usually a built-up
hydrant that is paint with a Red Top because it
has a hydrant pressure greater then 200 PSI
On your map book page it will show block
number and hydrant number for hydrants in
Griffith Park

40
Q

WHAT IS AN ANGLE VALVE USED FOR?

A

Angle Valves are connected on top of an existing
hydrant and are for the use of other City
Departments for filling tanks, fishing streets, etc.
They may be used by the Fire Department if other
outlets are occupied or defective

41
Q

WHAT IS THE EDDY VALVE USED FOR?

A

An Eddy Valve is a gate valve installed on a
hydrant outlet for use by contractors, etc. This
valve permits repeated opening and closing of
the hydrant without using the regular valve

Engine Operations (7 decks)

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