Fire Protection and Safety Flashcards
7 cards from real CDCP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Fire Protection and Safety flashcards as text
Which NFPA standard specifically addresses the fire protection of telecommunications facilities and data centres?
Answer: NFPA 75
NFPA 75 is the Standard for the Fire Protection of Information Technology Equipment and directly governs data centre fire protection requirements.
What is the minimum required fire resistance rating for walls separating an IT equipment room from other occupancies according to NFPA 75?
Answer: 1 hour
NFPA 75 requires a minimum 1-hour fire resistance rating for walls separating IT equipment rooms from adjacent occupancies.
A technician uses a portable CO2 extinguisher on an electrical fire in a server rack. What is a key safety concern specific to CO2 use in enclosed spaces?
Answer: CO2 displaces oxygen, creating an asphyxiation hazard for personnel
CO2 suppresses fire by displacing oxygen, which poses a serious asphyxiation risk to personnel in confined or enclosed spaces.
During a fire suppression system inspection, the inspector finds that the agent cylinder pressure is 10% below the nameplate pressure. What should the data centre operator do?
Answer: Tag the cylinder out of service and arrange for recharging or replacement
A pressure variance exceeding acceptable limits (typically ±5%) means the cylinder must be taken out of service for recharging or replacement to ensure system effectiveness.
What is 'fire load' in the context of data centre fire risk assessment?
Answer: The total amount of combustible material in a space, expressed in energy per unit area
Fire load is the total combustible energy content per unit area (kJ/m² or BTU/ft²), used to assess potential fire severity in a space.
A data centre uses an inert gas suppression system (e.g., IG-541/Inergen). What is the primary fire suppression mechanism of inert gas systems?
Answer: Oxygen concentration reduction to 12-14% to suppress combustion
Inert gas systems reduce oxygen concentration to approximately 12-14%, below the level that supports combustion, while remaining safe for brief human exposure.
Which condition would trigger an immediate mandatory evacuation of a data centre under OSHA and NFPA life-safety codes, regardless of fire suppression system status?
Answer: A gaseous suppression system pre-discharge alarm sounds
A gaseous suppression system pre-discharge alarm signals an imminent release of suppression agent that may displace oxygen or be otherwise hazardous, requiring immediate evacuation.