NFIRS 5.0 Element: ‘Detector Operation’

Définition : The operation and effectiveness of the detector relative to the area of fire origin.
Purpose : The information on the usage, reliability, and effectiveness of automatic detection equipment is important to the understanding of fire control and life safety with and without detection equipment. This item is not designed to evaluate any alarm transmission capability of the system, only the detection of the fire.
Entry : Check or mark the box best describing the location and operation of the detector.

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.


Here are the NFIRS codes for the ‘Detector Operation’ element

Detector Operation  Code 
Fire Too Small To Activate Detector 1
Detector Operated 2
Detector Failed To Operate 3
Undetermined U

Relational Edit Rules for ‘Detector Operation’

NFIRS defines relational edit rules to ensure data consistency and accuracy in its database. These are the rules for ‘Detector Operation’.

Rule Group  Overview 
Relational Edit Rule 75 If the detector operated, did it alert occupants?.
Relational Edit Rule 76 If the detector failed, how did it fail?.

Transactions containing ‘Detector Operation’

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 SheetNFIRS CodingNFIRS ExamplesFDIDsPOCsNFIRS TransactionsNFIRS ModulesNFIRS ElementsNFIRS RulesNFIRS ReferenceNFIRS 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