3C Engineering & Research
Introduction To Fire Safety & Security System
According To BNBC & NFPA Codes
Design, Calculation, Documentation & Estimation
Batch : September 2021
Written Exam Test : Offline Course
Exam Time : 2.30 pm – 4.00 pm
Total Time : 1 Hour 30 Minutes
Participant Name
:
Contact Number
:
Company/Institution
:
Signature
:
Special Notes:
1. No extra paper will be given. Use the provided paper space.
2. All the technical questions answers unit will be “Inch-Feet” or “Millimeter-Meter” or mix.
3. Candidate can use personal calculator, mobile, lecture sheet & all class materials as open book.
4. Short cut answer is preferable.
5. Better use pencil, eraser so that you can make correction.
Exam Contents
Total Questions
Total Marks
Fire extinguisher, fire door
fire safety plan & basic fire
safety system
08
80
Fire alarm system
11
155
Fire hydrant system
18
190
Obtained Marks
Fire pump system
08
75
----------------------------------------------------------------------------------------------------------------------------- ------------------Total
45
Marks Rating
5 Marks
Pass Marks
Required Percentage
= 1%
= 300
= 60%
Obtained Marks
Obtained Percentage
=
=
500
FIRE EXTINGUISHER, FIRE DOOR, FIRE SAFETY PLAN & BASIC FIRE SAFETY SYSTEM
01. Write down the NFPA codes for fire safety system design that we generally follow.
Specify code number with name.
10
02. Write down the full meaning of following abbreviations (UL, FM, LPCB, BFSCD, RSC)
10
03. Write down the fire types/ classification details according to BNBC.
Also describe edition, volume, part & chapter reference.
10
04. Write down the hazard classification according to NFPA.
10
05. Write down the hazard classification according to BNBC.
10
06. Write down the components of fire door frame? Describe fire door types with some sizes
(Width x Height) in “mm” unit.
10
07. Write down the main objectives of a fire safety plan.
10
08. Draw the following fire hydrant system symbol according to latest version of NFPA code.
10
2 Hour
Fire Rated
Wall
Pillar
Hydrant
Butterfly
Valve
Foam
Extinguisher
CO2
Extinguisher
2 Hour
Rated Fire
Door
Clean
Agent
Extinguisher
Extinguisher
For metal
Fire
FIRE ALARM SYSTEM
01. What is SLC circuit & NAC circuit & what kind of wire used in these circuits?
Describe in short.
10
02. What is the maximum travel distance for using “Manual Call Point” according to NFPA?
[use “Ft-Inch” unit]
05
03. Write down the list of documents need to submit in RSC (ACCORD) for fire alarm system.
10
04. Draw the following fire alarm symbol according to latest version of NFPA code.
10
Smoke
Detector
Heat
Detector
Multi
Detector
Manual
Call Point
Isolator
Module
Input
Module
Output
Module
Cable
Riser
05. Describe some brands/manufacturer for fire alarm system.
05
06. How many smoke detectors required in this area? Calculate the amount of smoke detectors in figure
with dimensions Assume, coverage area of a smoke detector = 900 sft & floor height = 10’-0”.
07. How many heat detectors required in this area? Calculate the amount of heat detectors in figure
with dimensions Assume, coverage area of a heat detector = 2500 sft & floor height = 12’-0”. Use
reduction factor table for solution which shown in fire alarm system handnote or NFPA 72.
25
25
08. Write down the audible requirements for public & private mode according to NFPA 72.
10
09. What is the unit of sound level? How much sound level will cause hearing damage?
05
10. What are the sound reduction values for normal door & fire door?
10
11. Calculate the SLC circuit battery calculation according to following data.
Device Name
Fire Alarm Panel
Smoke Detector
Heat Detector
Multi Detector
Pull Station
Input Module
Output Module
Isolator Module
Quantity Standby
1
200
40
100
40
30
20
20
Required Standby Time = 24 Hrs
Required Alarm Time = 05 Minutes
Derating Factor = 1.2
Find the total battery capacity (Amp-Hrs)
Current (Amp)
0.4
0.0008
0.0006
0.0008
0.0006
0.001
0.001
0.003
40
Alarm Current (Amp)
1.4
0.0018
0.0015
0.0018
0.0018
0.001
0.003
0.015
FIRE HYDRANT SYSTEM
01. Write down the classification of fire hose system details according to
NFPA (Type, Size & Travel Distance). [use “Ft-Inch” unit]
10
02. Write down the standard spray (Upright/Pendant) type sprinkler spacing details for ordinary &
extra hazard occupancies according to NFPA standard. [use “Ft-Inch” unit]
15
For Ordinary Hazard
Sprinkler – Wall (Min) =
Sprinkler – Wall (Max) =
Sprinkler – Sprinkler (Min) =
Sprinkler – Sprinkler (Max) =
For Extra Hazard
Sprinkler – Wall (Min) =
Sprinkler – Wall (Max) =
Sprinkler – Sprinkler (Min) =
Sprinkler – Sprinkler (Max) =
03. What is the minimum & maximum distance of sprinkler deflector to ceiling according to
NFPA standard for obstructed & unobstructed condition? [use “Ft-Inch” unit]
10
04. Write down the coverage & spacing (LxW) of sprinklers according to NFPA for light, ordinary
& extra hazard occupancy. [use “Ft-Inch” unit]
10
05. Write down the components of Zone Control Valve & Alarm Check Valve Assembly.
10
06. Write down the sprinkler system pipe schedule (Steel Pipe) according to NFPA for ordinary
hazard.
10
Pipe Dia (mm)
Sprinkler Amount
07. What is the application of tamper switch & water flow switch?
10
08. How to define standard riser size of fire hose system & sprinkler system according to
NFPA? Also describe drain line & flash line connection details.
10
09. Draw the following fire hydrant system symbol according to latest version of NFPA code.
Wet
Riser
OS&Y
Gate Valve
Check
Valve
Landing
Valve
Freestanding
4Way
Breeching
Inlet
Zone
Control
Valve
Alarm
Check
Valve
Class-II
Hose
System
10
10. Write down the list of documents need to submit in RSC (ACCORD) for fire sprinkler/hydrant
system.
10
11. Write down the water flow requirements of fire hose system details according
to NFPA 14 with respect to area.
10
12. Write down the pressure requirements of fire hose system.
(Minimum residual pressure & maximum pressure at hose connection)
10
13. How many sprinklers are required in this area? Calculate the amount of sprinkler in figure
with dimensions. Assume, area type = production area & floor height = 14’-0”. Also show the k factor of
sprinkler.
20
14. Write down the types of automatic sprinklers according to installation orientation.
10
15. What is the minimum area required of the sprinkler system for remote area calculation
according to hazard classifications. [use “Ft-Inch” unit]
10
16. Write down the density (gpm/sft) values according to the Density/Area curve figure
according to NFPA 13 with respect to hazard classifications.
10
17. What are the maximum distance between sprinkler & a point in the floor area according to
hazard classifications. Show with thumb rule. [use “Ft-Inch” unit]
10
18. What is the relation between flow rate, discharge constant & pressure? Show in a equation.
05
FIRE PUMP SYSTEM
01. What are the components & equipment of fire pump set?
10
02. What is anti-vortex plate? What is the size required for anti-vortex plate according to NFPA?
Explain in short with figure.
10
03. What is pressure sensing line? Describe their application, size & specifications according to
NFPA.
10
04. What are the installation safety of a fire pump set?
10
05. What are the types of fire pump?
10
06. Write down minimum 3 differences between horizontal split case & end suction fire pump.
10
07. Write down the thumb rule for selection of jockey pump.
05
08. Write down the table of equipment protection & fire separation of fire pump room
according to NFPA 20.
10