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Inspector Training Bulletins > TB 149: Residential Fire Sprinklers > Flashcards

TB 149: Residential Fire Sprinklers Flashcards

1
Q

This mandate uses the NFPA ___ standard

A

NFPA 13D

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2
Q

NFPA 13D Standard includes new construction of

1.

2.

3.

A
  1. garages
  2. patios
  3. unattached structures
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3
Q

NFPA 13D IS REQUIRED FOR PATIOS EXTENDING ___ FT FROM HOUSES

A

4 FT

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4
Q

NFPA 13D IS REQUIRED FOR UNATTACHED STRUCTURES GREATER THAN ______.

A

200 SQ FT

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5
Q

IN NFPA 13D SPRINKLERS ARE ONLY REQUIRED IN WHAT PART OF RESIDENCE?

A

LIVABLE AREAS OF HOMES

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6
Q

WHAT ARE EXEMPT FROM NFPA 13D ?

A

ATTICS

OTHER COMBUSTIBLE SEALED SPACES

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7
Q

PROVISIONS OF NFPA 13D DO NOT APPLY TO FACILITIES/STRUCTURES THAT _______\_OR WERE _________ _\_ ______ ___________ PRIOR TO JANUARY 1, 2011

A

EXISTED

APPROVED FOR CONSTRUCTION

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8
Q

NATIONWIDE STATISTICS SHOW THAT MOST FIRES, INJURIES AND DEATH OCCUR WHERE?

A

AT HOME

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9
Q

INTERNATIONAL ASSOCIATION OF FIRE CHIEFS(IAFC) REPORT THAT APPROX ______ CIVILIANS PERISH ANNUALLY FROM FIRE

A

3000

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10
Q

International Association of Fire Chief (IAFC)report that nearly ____ of civilian death from fire occur in the Home

A

2/3

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11
Q

Residential Fire Sprinklers are primarily “_____ _______” systems with the purpose of preventing______ and improving _______ _______ _______

A

“LIFE SAFETY”

  1. FLASHOVER
  2. Chances of Occupant Escapes
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12
Q

Residential Fire Sprinkler Systems protect against fire generated from _____ ________ __________, with the objective of containing the fire to the ____ ____ ________.

A

SINGLE INGNITION SOURCE

ROOM OF ORIGIN

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13
Q

According to National Institute of Standards (NIST) a home fire can reach deadly proportions in as little as __________, with __ to ___ before first responders arrive.

A

3 minutes

7-10 minutes

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14
Q
A
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15
Q

Lightweight construction, larger homes, open spaces, fuel loads and materials contribute to what 3 things?

A

1.accelerated fire spread 2. shorter time to flashover 3.structural collapse.

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16
Q

Residential sprinkler heads are more _________ ____________than traditional heads and therefore activate at earlier stages of the fire.

A

heat sensitive

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17
Q

________ or _______are used, depending on head type for residential sprinklers

A

Thinner fusible links or smaller diameter bulbs

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18
Q

Head temperatures range from ______ to ________degrees and cover a minimum area of ___’x___’.

A

135 to 175 12’x12’

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19
Q

Extended coverage heads can cover a ___’x _____’area

A

20 ft x 20 ft

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20
Q

Who “plan checks” and “approves” the installation of residential sprinklers.

A

Plumbing/Mechanical Engineering Division of Los Angeles Department of Building and Safety (LADBS)

21
Q

All components of the home systems are to be ___________ or ___________listed while the contractors performing the installation need to be licensed and manufacturer certified.

A

Underwriter Laboratory (UL) or Factory Mutual (FM)

22
Q

Water supply can be obtained from a variety of sources. They include:

A

domestic water supply elevated tank pressure tank stored source well with an adequate pump.

23
Q

Most home systems in the City are connected to the ___________ __________ ______

A

Domestic water supply

24
Q

Piping beyond the street shut- off valve SHALL be installed in such a manner that the supply to the sprinklers SHALL …..

A

not be turned off when the domestic system is being serviced (domestic water can be isolated).

25
Q

The valve on the street will shut off what ?

A

both the domestic and sprinkler water supply

26
Q

Shut-off/control valves are usually located in the ___________or on ________________

A

Garage the side of the house

27
Q

Identification signs for shut-off/control valves are required by

A

LADBS

28
Q

the minimum size of sign and lettering for Shut-off/control valves is ____________

A

not regulated

29
Q

though not mandatory, _______________are highly encouraged by LADBS and are installed on most residential systems.

A

Bell (Water Flow) alarms,

30
Q

There are a variety of piping materials that can be used for residential systems. These include:

A

black pipe copper pipe chlorinated polyvinylchloride (CPVC) polybutylene (PB) schedule 40 steel thin walled steel.

31
Q

Most all of the new systems in the City use______ due to cost, fabrication time, fire resistiveness, connectability to domestic water and less friction loss.

A

chlorinated polyvinylchloride (CPVC)

32
Q

CPVC is a lightweight,_________ colored rigid plastic pipe.

A

Orange

33
Q

LADBS requires a (minimum) water demand capable of flowing_____ heads for a period of______ minutes.

A

2 heads 10 minutes

34
Q

Residential sprinkler systems in Los Angeles are usually______ systems and don’t require the use of ____________________due to our mild climate.

A

Wet systems Anti-freeze solutions

35
Q

All piping technologies must pass rigorous _____________prior to approval for use in sprinkler systems.

A

fire/heat testing

36
Q

Home sprinkler piping is installed in the _____

A

Attic

37
Q

A greater vulnerability to heat is that of the piping _________ and ___________. If these components are exposed, they may loosen/expand and cause the pipe to____ or _______, reducing the effectiveness of the system.

A

Hangers & Straps sag or drop

38
Q

residential heads are installed in ________ ________ ONLY and not in attics.

A

livable spaces

39
Q

Residential sprinklers are not subject to ___________________and would only be inspected when construction is complete.

A

Chief’s Regulation No.4 testing

40
Q

After the installation receives its final approval, the maintenance and operability becomes the responsibility of who?

A

Homeowner

41
Q

Sometimes ______ ________or the sprinkler heads themselves are ________ ________which can hamper the activation of the heads.

A

cover plates painted over

42
Q

__________ & __________can, over time, decrease pressure and volume.

A

Expansion of population and construction

43
Q

A decrease in _________________________can occur over the years.

A

inside diameter of supply lines

44
Q

The identification signs for shutt-off valves are inspected only at________________________, therefore might be missing, faded or covered by foliage.

A

the time of the final inspection

45
Q

If difficulty locating the shut-off valve occurs, shut the water off where ?

A

at the street

46
Q

A __________ ________is used for connecting the joints when Chlorinated polyvinylchloride (CPVC) being installed.

A

solvent cement

47
Q

As of ______ __ ________ the State of California is requiring the installation of residential fire sprinklers in all new one and two family dwellings and manufactured homes.

A

JANUARY 1, 2011

48
Q
A

Inspector Training Bulletins (13 decks)

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