FDNY S-95 Exam Study Guide

S-95 FDNY Test Overview

• S-95 certificate holders are authorized to perform visual inspections on smoke alarms only.
• Fire alarm systems primarily function to alert tenants and signal the FDNY via a central station about fire incidents.

Fire Alarm Control System

• Fire Alarm Control Panel (FACP) is crucial for monitoring inputs and controlling outputs through various circuits, activating audible and visual alarms.

Signal Types

• There are three main signal types:
  • Fire Alarm Signals: Initiated by manual pull stations, smoke detectors, or water flow switches during a fire.
  • Supervisory Signals: Indicate abnormal conditions of monitored systems requiring attention.
  • Trouble Signals: Highlight failures like battery or AC issues, or circuit malfunctions.

Alarm Management

• Alarm Silence Switch: Used to silence alarms during investigations and should not be reset until confirmed by FDNY.
• System Reset Switch: Resets the fire alarm system after conditions are cleared, usually not effective for trouble conditions.

Maintenance and Testing

• Smoke detectors need cleaning biannually and annual testing for smoke entry.
• Primary power for fire alarm systems should not exceed 277/480 volts. Secondary power must be independent from batteries.

Detection Devices

• Smoke Detectors: Detect both visible and invisible combustion particles, outperforming heat detectors in speed.
• Heat Detectors: Two types:
  • Fixed-temperature: Activated by preset temperature; typically require replacement after activation.
  • Rate-of-rise: Sensitive to rapid temperature increases and usually restore after activation.

Specialized Detectors

• Ionization Detectors: Use ionization to sense smaller smoke particles.
• Photoelectric Detectors: Detect smoke by light obscuration or scattering, effective in high-smoke scenarios.
• Multi-criteria & Multi-sensor Detectors: Utilize multiple sensors for enhanced detection capabilities, able to signal alarms based on combined stimuli.

Fire Classes and Extinguishers

• Class A Fires: Involve solid combustibles like wood and paper; common in dry areas.
• Class B Fires: Involve flammable liquids; frequent in kitchens and maintenance.
• Class C Fires: Involve electrical components.
• Class D Fires: Involve reactive metals such as magnesium and titanium.
• Class K Fires: Concern cooking oils and fats.

Fire Extinguisher Protocols

• Monthly checks of portable fire extinguishers are mandatory.
• Extinguishers must be evaluated for charge status, placement, tampering signs, and physical integrity.

Documentation and Logkeeping

• Alarm logs must include detailed information on alarms, maintenance, and system statuses, retained for three years.
• Daily log entries should capture essential information like certificate holder's details and times of events.

Additional Protocols

• Prior notification of the FDNY is necessary when taking fire alarm systems offline to avoid unnecessary dispatches.
• Out-of-service signage must be displayed and maintained by the impairment coordinator.

Inspection and Maintenance Requirements

• Routine maintenance must be carried out by designated FDNY-approved individuals to ensure operational readiness and compliance.

Prepare for the FDNY S-95 certification with this comprehensive study guide. The flashcards cover essential topics like the role of a S95 holder, the purpose of fire alarm systems, and the functions of the Fire Alarm Control Panel (FACP). Enhance your understanding and ace the exam with ease.