Chapter 2 Part 2 Video Discussion Flashcards
The idea that lighting can provide improve protection for people and facilities is as old as the civilization.
is the single most cost-effective deterrent to crime because it creates a psychological deterrent to the intruders. Security lighting provides sufficient illumination during hours of
darkness.
PROTECTIVE LIGHTING
TYPES OF PROTECTIVE LIGHTING ARE?
Stationary luminary (continuous)
Stand by lighting
Movable lighting
Emergency lighting
- consisting of series of fixed luminaries to
flood given area continuously overlap.
Stationary luminary (continuous)
– the intensity is focused to the intruder while the
observer or guard remains in the comparative darkness. The lighting is toward the approach of an entrance to an installation. Lights with reflectors increase
glare.
A. Glare projection type
– the width of the lighted stop can be controlled and adjusted to suit the security needs. The lighting is focused; sag, on a file of items rather than on the background.
B. Controlled lighting
– Provides continuous lighting through manual operations. Similar to
continuous lighting but in turned on manually or by special device or other automatic means, when there is suspicion of entry.
- Standby lighting
– Stationary or portable, manually operated searchlights which maybe
lighted continuously during hours of darkness or only as needed, and usually supplementary to either to the first 2 types.
- Movable lighting
– Duplicative of existing lighting system that is utilized in the event of electric failure
- Emergency lighting
GENERAL TYPES OF LIGHTINGSOURCES ARE?
Incandescent lamps
Mercury vapor lamps
Metal halide
Fluorescent lamp
High pressure sodium vapor
Low pleasure sodium vapor
Quartz lamp
– common light bulbs in which light is produced by the resistance of a filament to electric current, have low initial cost and provide good color rendition.
- Incandescent lamps
– emit a purplish white color caused by an electric current passing through a tube of conducting and luminous gas. Considered more efficient and it is widespread in exterior lighting.
- Mercury vapor lamps
– is similar in physical appearance to mercury vapor, but provides a light source of higher luminous efficiency and better color rendition.
- Metal halide
– provides good color rendition. However, it cannot project light over long distances; thus, it is not desirable as flood lights.
- Fluorescent lamp
– is introduced in 1965, for exterior lighting of parking areas, road ways, buildings, and industrial and commercial installations. It emits golden to white to pink color.
- High pressure sodium vapor
– produces yellow color.
- Low pressure sodium vapor
– produces very bright light.
- Quartz lamps
TYPES OF LIGHTINGEQUIPMENT ARE?
Floodlights
Search lights
Fresnel lights
Street lights
– Project light in a concentrated beam use in boundaries and fences.
- Floodlights
– highly focused incandescent lamps used to pinpoint potential trouble spots.
- Search lights
– Wide beam units, primary used to extend illumination in long, horizontal strips to protect approaches to perimeter barrier.
- Fresnel lights
– they are widely used in parking areas
- Streetlights
✓ It assists the security in detecting, impeding, or deterring potential security threat in the
installation.
PROTECTIVE ALARMS
✓ Its function is to alert the security personnel for any attempt of intrusion into a
protected area, building or compound.
PROTECTIVE ALARMS
BASIC PARTS OF AN ALARM SYSTEM ARE?
Sensor or trigger device
Transmission line
Annunciator or Enunciato
-it emits aural or visual signals or both.
a. Sensor or Trigger device
– a circuit which transmit the message to the signaling apparatus
b. Transmission line
– it is the signaling system that activates the alarm.
c. Annunciator/ Enunciator
TYPES OF ALARM SYSTEM ARE?
Central station system
Proprietary system
Auxiliary alarm system
Local alarm
Local alarm by chance system
Dial alarm system
- Type of protective alarm system where the central station is located outside the installation. It can be located in an agency and the
installation is one of the subscribers. When alarm is sounded, central station notifies police and other agency.
- CENTRAL STATION SYSTEM
- This function in the same way as central system except that it is owned by, operated and located in the facility. Response to all alarms is by facility’s own security or fire personnel.
- PROPRIETARY SYSTEM
-In this system installation circuits are led into local police or fire department by lease telephone lines.
- AUXILIARY ALARM SYSTEM