Standpipe and Hose Systems Flashcards

Standpipe and Hose Systems

• Standpipe and hose systems enable rapid deployment of fire hoses and fire streams at locations away from fire apparatus.

Standpipe System

• Consists of wet or dry pipes in single or multi-story buildings, with fire hose outlets for quick access during firefighting.

Reducer

• An adapter for attaching a smaller hose to a larger one; features larger female threads and smaller male threads.

House Line

• A permanent, private standpipe hose line for use in fire emergencies.

Class I Standpipe Systems

• Intended for trained fire suppression personnel.
• Features 2.5-inch hose connections or hose stations attached to the standpipe riser, may include a reducer.

Class II Standpipe Systems

• Designed primarily for building occupants.
• Provides 1.5-inch hose and nozzle, categorized as single-jacket type.

Class III Standpipe Systems

• Combines elements of Class I and II.
• Supplies 1.5-inch hose stations for trained occupants, with optional removal of hose, nozzles, and rack by local jurisdictions.

Components of Standpipe Systems

• Includes hose stations, water supply, water-flow control valves, risers for water transfer, pressure-regulating devices, and Fire Department Connection (FDC).

NFPA 14

• The standard for the design and installation of standpipes, establishing three classes of standpipe systems.

Automatic Wet System

• Contains water at all times, meets system demand automatically, and maintains pressure; unsuitable for cold environments.

Automatic Dry System

• Holds air under pressure to ensure piping integrity; water enters the system via a dry pipe valve upon hose valve activation.

Semiautomatic Dry System

• Permanent water supply ready to meet demand but requires activation to provide water at hose connections.

Manual Dry System

• Lacks a permanent water supply; water is available only when connected through the Fire Department Connection (FDC).

Manual Wet System

• Also lacks a permanent water supply and must be maintained full of water from a small source, primarily for leak detection.