Honeywell Notifier Addressable Fire Alarm — AIIMS Raipur — Fire Detection & Alarm, Extra Low Voltage (ELV)

Scope

• Fire Detection & Alarm
• Extra Low Voltage (ELV)

• 10 detection loops
• 1,000 addressable sensors
• Honeywell Notifier platform
• Completed 2018

Capacities delivered

• 10-loop addressable fire alarm panel
• 1,000 addressable sensors across the 10 loops

Engineering challenge

• A teaching hospital cannot be emptied on an alarm. Patients in wards, ICUs and operating theatres cannot self-evacuate, so the system has to support defend-in-place and progressive horizontal evacuation — moving people into an adjacent protected compartment — rather than sounding one building-wide evacuation.
• One building holds rooms with nothing in common: wards and corridors, diagnostic suites with sensitive equipment, kitchens and plant rooms, records stores, electrical and server rooms. Detection has to be selected per space, not per floor.
• The fire alarm is what triggers everything else — air-handling shutdown, lift homing, door release, stair pressurisation. Those interfaces decide whether the building behaves correctly, and they are settled on paper before a single device is fitted.
• Delivering inside a tier-1 EPC programme means the fire-alarm package lands on someone else's schedule, in someone else's shafts, alongside trades already on site.

Our solution

• Delivered the Honeywell Notifier addressable fire detection and alarm package in collaboration with Punj Lloyd, as the specialist fire-safety partner inside their programme.
• Addressable architecture throughout, so each of the 1,000 sensors reports individually rather than only as part of a zone.
• The system was built on ten detection loops.
• Worked inside the main contractor’s programme and interfaces, as a package partner rather than as the principal contractor.

Execution

• Honeywell Notifier addressable fire detection and alarm platform

Outcome

• Addressable fire detection and alarm delivered on a central-government medical institute, completed in 2018.
• Delivered as fire-safety package partner to a tier-1 infrastructure EPC, on their programme and to their interfaces.
• Device-level addressability across 1,000 sensors, so an alarm reports a specific device rather than only an area.
• Ten detection loops across the installation.

Lessons and engineering considerations

• Get the fire-compartment plan first. Detection zoning that does not follow the compartments cannot support horizontal evacuation, however good the detection is.
• In a hospital the cause-and-effect matrix is the deliverable and the panel only executes it. Agree it with the fire consultant and the HVAC and electrical packages before loop design, not after — air-handling shutdown, lift homing, door release and stair pressurisation are what decide whether the building behaves correctly.
• Loop count is not only a capacity question. It also decides how much of a building a single cable fault can take with it, which is why a hospital is rarely worth wiring as a few long loops.
• Addressable stops being a preference and becomes a requirement the moment a building has more rooms than a response team can search during an alarm.