NFIRS 5.0 Element: ‘Automatic Extinguishment System (AES) Type’

by | Mar 9, 2023

Définition : Identifies the type of automatic extinguishing system that was present in the area of fire origin.
Purpose : Information on the type of AES present at the fire is important to the understanding of fire control and life safety in properties with and without automatic extinguishing system.
Entry : Check or mark the box that indicates the type of AES present in the area of fire origin. If multiple systems are present, indicate the system designed to protect the hazard where the fire started.

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 ‘Automatic Extinguishment System (AES) Type’ element

Automatic Extinguishment System (AES) Type  Code 
Wet-pipe Sprinkler System 1
Dry-pipe Sprinkler System 2
Other Sprinkler System 3
Dry Chemical System 4
Foam System 5
Halogen-type System 6
Carbon Dioxide System 7
Special Hazard System, Other 0
Undetermined U

Relational Edit Rules for ‘Automatic Extinguishment System (AES) Type’

NFIRS defines relational edit rules to ensure data consistency and accuracy in its database. These are the rules for ‘Automatic Extinguishment System (AES) Type’.

Rule Group  Overview 
Relational Edit Rule 79 relational edit rule 79.

Topic: NFIRS