Incident Types
Overview
Incident classification is a critical component of NERIS reporting and determines which modules and fields will be displayed. NERIS allows the selection of up to three incident categories from the incident types and categories below.

Disclaimer
NERIS is currently under development by the Fire Safety Research Institute (FSRI). This guide reflects the system as implemented in EPR FireWorks. Functionality may evolve as NERIS continues development toward full national implementation by January 2026.
Defining the Incident Type
1. Click the desired incident type from the Subtypes. The incident types are listed in the Incident Type table below.
2. A sidebar with subtypes will open on the right. Select the subtype that best describes the incident.
The subcategories are listed in the Category and Subtypes tables below according to incident types.

Note: Only one subcategory can be selected per incident type.
3. sing the Primary column to the left of the Incident Type table, mark the primary incident type. The incident type you mark will jump to the top of the table.
4. Answer the subsequent yes/no questions:
- Did any casualties (injuries or death) and/or rescues occur to firefighters during this incident?
- Did any casualties (injuries or death) and/or rescues occur to non-firefighters during this incident?
- Did the incident involve any emerging hazards? (Electric/Battery/Power Generation/CSST)?

Note:
- If the answer to questions (a) and (b) was Yes, complete the Casualties & Rescues tab (will open to the right).
- If the answer to question (c) is Yes, complete the Emerging Hazards tab (will open on the right).
5. Add incident modifiers as needed to provide additional context or details from the following list:
- Active Assailant
- Mass Casualty Incident
- Federal Declared Disaster
- State Declared Disaster
- Urban Conflagration
- Violence Against Responder
- County or Local Declared Disaster
6. When done, proceed to complete Actions & Tactics.
Incident Types
Fire | All incidents involving combustion or burning materials |
Law Enforcement Support | Assistance provided to law enforcement agencies |
No Emergency | False alarms, canceled calls, good intent calls |
Hazmat | Hazardous materials incidents and investigations |
Rescue | Incidents involving trapped or endangered persons |
Medical | Incidents requiring emergency medical services |
Public Service | Non-emergency assistance to the public |
Incident Categories and Subtypes
Certain incident types require additional subtype specification. After selecting an incident type from the
Fire
Outside Fire | Fires occurring outdoors (trash, vegetation, wildland) | Construction Waste Other Outside Fire Outside Tank Fire Trash / Rubbish Fire Vegetation / Grass Fire Wildfire - Wildland Wildfire - Urban Interface Utility Infrastructure Fire Dumpster / Other Outdoor Container Fire
|
Special Fire | Explosions, ESS fires, infrastructure fires | |
Structure Fire | Building fires, both confined and extended | |
Transportation Fire | Vehicle, aircraft, boat, or train fires | Aircraft Emergency Vehicle Fire - Passenger Vehicle Fire - Commercial Vehicle Fire - RV Vehicle Fire - Food Truck Boat / Personal Watercraft / Barge Fire Powered Mobility Device Fire Train / Rail Fire
|
Hazardous Situation (HazSit/HazMat)
Hazard Non-Chemical | Bomb threats, power lines, electrical hazards | Bomb Threat / Bomb Response / Suspicious Package Electrical Power Line Down / Arching / Malfunction Electrical Hazard / Short Circuit
|
Hazardous Materials | Chemical spills, gas leaks, radiological incidents | Fuel Spill / Fuel Odor Gas Leak / Gas Odor Carbon Monoxide Release Biological Release / Incident Radioactive Release / Incident Hazardous Material Release (Chemical from Transportation) Hazardous Material Release (Chemical from Fixed Facility)
|
Investigation | Smoke or odor investigations | |
Overpressure | Increase in pressure above normal atmospheric pressure | Rupture Without Fire No Rupture
|
Medical
Illness | Non-traumatic medical conditions (cardiac, respiratory, stroke) | Abdominal Pain / Problems Back Pain (Non-Trauma) Breathing Problems Cardiac Arrest Chest Pain (Non-Trauma) Convulsions / Seizures Diabetic Problems Headache Heart Problems Pandemic / Epidemic / Outbreak Pregnancy / Childbirth Psychological Behavior Issues Sick Case Stroke / CVA Unconscious Victim Well Person Check Unknown Problem Nausea / Vomiting Altered Mental Status No Appropriate Choice Allergic Reaction / Stings Overdose / Poisoning
|
Injury/Trauma | Physical injuries from accidents, violence, or environmental causes | Animal Bites Assault Burns / Explosion Carbon Monoxide / Other Inhalation Injury Choking Drowning / Diving / SCUBA Accident Fall Heat / Cold Exposure Motor Vehicle Collision Industrial Accident / Inaccessible Incident / Other Entrapment (Non-Vehicle) Gunshot Wound Hemorrhage / Laceration Stab / Penetrating Trauma Other Traumatic Injury Electrocution Eye Trauma
|
Other | Medical alarms, standby requests, transfers, public health events | |
No Emergency
Cancelled | Calls cancelled en route or on-scene | Cancelled |
False Alarm | Intentional, malfunction, or accidental alarms | Intentional False Alarm Malfunctioning Alarm Accidental Alarm Other False Call Bomb Scare
|
Good Intent | Calls with good intentions but no emergency found | No Incident Found Upon Arrival / Location Error Controlled Burning (Authorized) Smoke From Nonhostile Source (Smoke Scare) Investigate Hazardous Release (Nothing Found)
|
Public Service
Alarms (Non-Medical) | Fire, gas, or CO alarm activations | Fire / Smoke Alarm Gas Alarm CO Alarm Other Alarm
|
Citizen Assist | Non-emergency assistance to civilians | |
Disaster/Weather | Weather-related responses, damage assessment | |
Other | Move-up, standby, and other miscellaneous services | |
Rescue
Outside/Outdoor | Rescues in outdoor environments (steep angle, confined space) |
Structure/Indoor | Building collapse, elevator/escalator rescues |
Transportation (Land) | Vehicle extrication, train/aviation incidents |
Water | Water rescues in standing or swift water |