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Elevator shunt trip, where provided by design, is usually activated by:
Specific heat detection at equipment or hoistway
Definition: Heat at specific locations initiates shunt trip to remove power prior to sprinkler discharge, when used by the design.
Annunciation of elevator status should appear:
At the "FACU" or annunciator per design
Definition: Operators and responders need clear indication of recall, phase selection, and shunt status at the control/annunciator.
Smoke control fans for stair pressurization should:
Start per the approved smoke control sequence when required
Definition: Smoke control is a programmed emergency control function with documented sequence and priorities.
Door unlocking for egress upon alarm is a function of:
The fire alarm interfacing with access control per the egress plan
Definition: Fire alarm must release or unlock egress doors as required by the life safety plan and code.
Which sequence artifact documents inputs, outputs, priorities, and fail safe states?
I slash O matrix or sequence of operations
Definition: The sequence or I slash O matrix is the testing road map for all emergency control functions.
Smoke control dampers should:
Move to positions defined in the smoke control sequence
Definition: Dampers open or close as programmed to manage smoke movement and protect egress routes.
In atria, which detection technology is commonly used?
Beam or aspirating detection with zoning
Definition: Large volumes benefit from beam or aspirating detection for early, wide area coverage.
Pressurization setpoints and proof of airflow switches are:
Part of the smoke control testing plan and sequence
Definition: Pressure and flow proving ensure smoke control actually performs per design during a fire event.
Firefighter telephone systems in high rise buildings require jacks:
At each floor level in required exit stairways per design
Definition: Two way firefighter telephone jacks provide emergency communications at stair landings on each floor.
Emergency communications (voice) systems must be:
Intelligible in acoustically distinguishable spaces
Definition: Voice messages must be understandable; verify intelligibility in required spaces.
Which event should pre empt non emergency paging?
Fire alarm emergency messages
Definition: Life safety signals take priority over non emergency audio.
Where should remote annunciators be located for best responder access?
Near main entrances or fire command locations
Definition: Placing annunciation where responders arrive speeds size up and response.
Elevator hoistway smoke detector should be placed:
Considering piston effect and air currents to avoid dilution
Definition: Air movement affects smoke travel; avoid dead air and dilution near doors and vents.
If shunt trip is part of the design, documentation should include:
Clear heat detector locations, trip logic, and breaker details
Definition: Specific detection points and the power disconnect method must be identified and tested.
Stair pressurization doors should:
Meet opening force limits while maintaining pressure
Definition: Balance pressure with door operability; verify during smoke control testing.
Smoke control ‘fail safe’ positions are:
The default positions upon loss of power or control, documented in the sequence
Definition: Fail safe states ensure predictable behavior if power or controls fail.
Upon fire alarm reset, smoke control devices should:
Return to normal as the sequence dictates
Definition: After reset, the sequence should restore normal HV "AC" and position states.
Elevator recall floor change due to smoke at the primary landing is:
A secondary recall operation to an alternate floor
Definition: If the primary landing has smoke, elevators recall to the secondary landing per the design.
Acceptance testing requires verifying:
100 percent of initiating, notification, and programmed sequences
Definition: Every device and control function is tested during acceptance; results are documented.
Reacceptance testing is required when:
Any software change or substantial hardware change is made
Definition: Program or hardware modifications require targeted or full reacceptance tests depending on the scope.
Detector sensitivity testing should occur:
Within a year of installation and periodically per code/listing
Definition: Sensitivity must remain within the listed range; intervals may be adjusted per performance options.
Cleaning a photoelectric smoke detector is best done:
Per manufacturer instructions using approved methods
Definition: Follow the device’s instructions to avoid damage and maintain performance.
Drift compensation features:
Adjust thresholds as a detector gets dirty while still requiring cleaning
Definition: Compensation helps maintain sensitivity but does not replace cleaning and testing.
A system left in bypass after testing should be:
Restored to normal with all bypasses cleared and notifications sent
Definition: Full restoration and notifications close out testing safely.
Battery tests should be performed:
Under load at regular intervals per code and manufacturer
Definition: Load testing reveals capacity; follow code and manufacturer schedules.