MTA CAMS PRDC Fire Detection and alarm system back house Flashcards
existing fire alarm system shall be replaced by……
an addressable fire alarm system
What are the two main features of an addressable fire alarm system?
- All pieces of Equipment must be connected with each other as well as the main Fire alarm panel
- Each piece of equipment must be given a specific identification unique to them
What must occur during the replacement of a fire alarm system?
Fire watch will be established for the duration of a fire alarm system replacement or modification
What is a fire watch ?
A fire watch is the continuous patrol of a location to monitor for evidence of fire, smoke or any abnormalities
Stations that utilize
__________ and _______________ fire alarm systems may expand for station _______________ and ______________
Edwards EST-3 and Simplex 4100ES
back of house coverage and elevator control
what type of fire alarm panel will no longer be used for station or elevator protection?
Any fire alarm panels that reside in or protect signal areas
What can fire alarm panels in signal areas be used for?
The can be used by the new fire alarm system for monitoring used only.
What must be done to the existing fire alarm system after installation of the addressable fire alarm system ?
They must all be connected in such a way that the addressable fire alarm system can monitor the existing fire alarm system.
What protocol must introduced into an existing fire alarm system that protects back of house and administrative areas ?
for two-way cross alarming
What is cross-alarming ?
Cross-zone detection is all about the confirmation of a fire through requiring two fire detectors in the space to activate before beginning the releasing sequence. Cross-zoned detection is not always used to release a suppression system, but it often is when using smoke detectors
When cross-alarming is intruded what should the system avoid ?
the system should avoid re-transmission of an alarm signal back to the originating system.
If an existing system is not able to intact cross-alarm due to obsolescence, technical inability, or state of disrepair of equipment what must happen to the system ?
the Design-Builder shall remove the affected existing system or systems and associated conduit, patch and restore the area to match surrounding area, and incorporate the required fire alarm protection onto the new fire alarm system.
What types of panels should be avoided when intruding cross-alarming ?
fire alarm panel that resides or protects signal area
What change will be made to function elevator, escalator and signals fire alarm systems that remain after fire system modification or replacement ?
They will have their general alarm notification appliances removed and replaced with those connected to the station panel.
What should be done to all new system and modified existing system ?
They must all go through programming installation and re-testing
What type of enclosure must be used for fire alarm panels in and around the control area ?
NEMA-4X
How should a fire alarm panel be mounted?
it should be surface mounted
When addressing the degree at which a panel is projected from the wall, what requirements must be meet ?
ADA requirements
What type of enclosure should notification appliance extender panels be given ?
NEMA-4X
What is a notification appliance extender ?
a two wire circuit with a resistor that can be found at the fire alarm panel. It extends power to notification appliances such as bells, horns, chimes, speakers, and strobes.
What device besides the FACP panel should be placed in the agent booth ?
Thee remote annunciator
What is a remote annunciator ?
Remote annunciators are smaller panels that provide a fire system status and a limited set of functional switches
What must be done it the stations remote annunciator is not in the full time control areas ?
a second remote annunciator must be placed in the control area
What type of enclosure must the second remote annunciator be given ?
NEMA-4X
What specifications should all conduits in the project abide by
PRDC 6.11.3E Raceways
What are the 3 requirements for final connections for interfaced equipment ?
They must be
1. flexible
2.non-metallic conduits with a 3.max length of 3 feet
What determines the box fill and mounting of the devices back boxes?
The manufacturer
Final terminations to sprinklers are allowed to be ……..
flexible non-metallic conduits
what type of wire should connect the local application node to the operational network for existing CAMS?
A CAT 6 cable
What type of alarm circuit is allowed for signaling and data ?
Class X
Under what parameters is a class B pathway allowed to be used in signal/data circuit?
If the circuit is used for specific elevators or escalator banks.
What type of alarm circuit is allowed for Notification ?
Class B
What type of alarm circuit is allowed for Auxiliary/Controls?
Class B
What are the requirements for a Class B circuit used for Auxiliary/Controls for a escalators ?
Each escalators must have a dedicated class solenoid release circuit
What are requirements of the pathway survivability of a fire alarm circuit ?
None
What is a class X pathway ?
Class X pathways are essentially Class A pathways with isolation capability (short circuit protection) between each device
What is a class B pathway ?
Class B is the most common type of pathway on fire alarm systems. A Class B pathway does have a redundant (return) pathway, so any equipment located on the circuit or pathway past a single open will not operate. Class B conventional circuits go through all devices and terminate in an end of line resistor (EOLR), which provides electrical supervision of the circuit. Class B signaling line circuits (addressable) do not have an EOLR but are supervised and annunciated by individual devices.
where will fire detectors be located in regards to back of house ?
The will be located in back house rooms
What back house rooms will not be included in fire alarm system protection?
rooms beyond the end of platform that are within CBTC restricted areas
What does CBTC mean ?
Communications-based train control (CBTC) is a railway signaling system that uses telecommunications between the train and track equipment
What type of fire detector will be in most of the station?
smoke
In what 4 types of areas will a heat detector be used?
scrubber rooms, bathrooms, specific interior station platforms or where a specific environmental issue requires it
The sprinkler monitor for the fire alarm system will connect back to the?
FACP
Where will room temperature monitoring be required in a fire alarm system ?
any where with unheated sprinklered areas
where will pull stations be located?
In administrative areas and crew reporting stations
Where will HVAC controls be located ?
new or existing ducts, multi room recirculating units greater then 2000cgm return
Multi room return ducts will have HVAC controls if they those ducts have what ?
greater then 2000cgm return
What are the two types of HVAC controls that can be used for a station ?
duct smoke detector or area smoke detector
Where should notification appliances in back of house areas be feed from ?
either FACP power supply or distributed notification appliance power supply
What three things will elevator controls contain ?
primary recall, alternative recall, and cab signaling
What is primary recall ?
An elevator recall happens when the fire alarm system activates and sends the elevator cab and its occupants to the primary floor.
What is alternate recall ?
An alternate recall is a secondary floor of egress that can be used if the primary level becomes unsafe for egress. The alternate recall level is typically the second floor, which is an alternate designated level other than the main floor.
What is cab signaling ?
signals provided by the elevator in case of an emergency
IF the required elevator functions are not included what must be done ?
They must be available to be included at a latter date
What type of protection is required for existing non power limited elevator or escalator control circuits an voltage should this circuit be ?
interposing relay protection is required and 24VDC
What is an interposing relay ?
an auxiliary relay that is used to isolate two different systems or devices from one another.
What type of detector is required for an elevator room ?
smoke detector
Under what conditions are fire alarm conduits within elevator shaft and escalator truss areas allowed to be repurposed ?
If they are undamaged
What must occur if fire alarm conduits within elevator shaft and escalator truss areas are allowed to be repurposed ?
The installation must be coordinated to minimize down time.
what type of detection is required within enclosed lobby areas and shafts ?
smoke detectors
What must be constant if a conduit in an elevator shaft/ escalator truss is repurposed ?
the spacing of the devices must be consistent
What type detector is required for shaft ways mezzanines and platforms that are open to outer air?
WATER PROOF conventional heat detectors
what is a shaft way ?
The vertical space in a building in which the elevator or lift travels.
what is an interface module ?
Interface modules connect electronic devices to electrical systems at the control level.
interface modules are required for
escalator sprinkler monitoring
what three things are included in escalator sprinkler monitoring ?
tamper switch monitoring at feed/backflow assembly and all drain lines, sprinkler heat trace panel monitoring, supervisory air monitoring, and waterflow condition
What is a feed/backflow assembly ?
a device that works to protect potable water from contamination or pollution due to backflow
What is a heat trace ?
A heat trace system is an electrical system used to maintain or raise the temperature of pipes and vessels
Escalator solenoid release is required , how is it performed ?
utilizing an addressable relay with fail safe operation to an interposing relay that controls the 120VAC to the solenoid valve.
Ventilation and what controls are required for elevator/ Escalator FA systems ?
Ventilation and damper controls
How are Ventilation damper controls controlled ?
controlled through an addressable module that supervises the 24VDC to an interposing relay and an additional module that supervises the 24VDC riser.
What type of operations are required to have mechanisms to verify alarms associated with escalator operations ?
escalator operations.
all smoke detectors related to escalator and elevator protection shall be what ?
EMR smoke detectors
What is an EMR smoke detector?
The EMR Series holder/release device incorporates a photoelectric detector and can control the spread of smoke and fire in a specific location or throughout the building if wired into a central alarm panel.
What is a balustrade ?
A balustrade is a railing system that can be used both indoors and outdoors. It’s made up of a top rail, balusters, hardware, and sometimes a bottom rail, posts, post caps, and decorative balls or finials
What should be placed 30 feet on both sides of an escalators balustrade ?
smoke detectors
A notification device should be provided for each _______ connected yo the station fire alarm system.
EMR
What type of detector is required to be placed in new battery rooms and existing communication rooms ?
Hydrogen detector
what code must hydrogen detectors be installed under ?
NYS Fire code
What must be included when installing hydrogen detectors ?
an auxiliary power circuit and monitoring modules
At what level will a hydrogen detector notification device activated ?
When the level of hydrogen is 10% of the lower explosive limit
what does lower explosive limit mean ?
The LEL is the lowest concentration of a gas that can be flammable or combustible. In other words, it’s the minimum amount of gas that will catch fire or explode when an ignition source is present
What are two things a hydrogen controls must include ?
1.an auto start output to an exhaust fan
- a weekly test mode function
what does the weekly test mode function for a hydrogen detector do ?
it auto starts the fan and reports a supervisory alarm in the event a fan running status is not received after the auto test is executed
How should the fans for a hydrogen detector be monitored?
The fans power availability status should be monitored in the fire alarm panel and in the CAMS server system
What is required for every 50 devices in an alarm circuit for back of house?
an isolator
What is an isolator?
Electrical isolator or disconnector is a type of mechanical switch that is used in electric circuits and devices with the main function of effectively isolating two different parts of an instrument or power circuit. By definition, isolation is the process of complete separation of various parts of an apparatus and this separation can either be physical or electrical or both.
When is elevator work required when working on back of house ?
Only the FA replacement/modification being done directly involve the elevator/escalator system
