NFIRS 5.0 Element: ‘Detector Alerted Occupants’
Définition : Did the detector succeed in alerting the occupants, or not?
Purpose : The information on whether or not a detector alerted the occupants of a structure to an emergency is important for understanding fire control and life safety with and without detection equipment.

Entry : Check or mark the box if a detector alerted the occupants in this incident (regardless of whether the detector was smoke, heat, carbon monoxide, etc.). This block can be left blank for non-fire incidents, and can optionally be used for a carbon monoxide (CO) incident and whether a CO detector operated.
Element Specification
Specification | Value |
---|---|
Requirement | Optional |
Expected Length | 1 |
Element Type | Coded Field – The coded field relating to an entry in the code table. Most coded fields allow for Plus+ One codes. For these fields the expected length of the coded entry is depicted as (National length OR Plus+ One length). Only fields with this notation in the expected length column allow for Plus+ One definitions. If the user has not provided information, an empty field should be transmitted. |
DETECTOR CODES
Here are the NFIRS codes for the ‘Detector Alerted Occupants’ element
Detector Alerted Occupants | Code |
---|---|
Detector alerted occupants. | 1 |
Detector did not alert occupants. | 2 |
Unknown | U |
Transactions containing ‘Detector Alerted Occupants’
The value of this element is captured by the following transaction :
Need more NFIRS help?
Here are some other useful ressources to learn more about NFIRS.
NFIRS Codes Cheat Sheet – NFIRS Coding – NFIRS Examples – FDIDs – POCs – NFIRS Transactions – NFIRS Modules – NFIRS Elements – NFIRS Rules – NFIRS Reference – NFIRS Compliant ?
You can also read this NFIRS 5.0 Complete Reference Guide, and NFIRS 5.0 Design Documentation in order to have a deeper understanding of NFIRS 5.0. Here are also NFIRS 5.0 Forms ready for you to download and use.
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Last Updated on April 28, 2023