ISO Mitigation SLIDERS v03 Fire

The Fire Suppression Rating Schedule (FSRS) measures the major elements of a community’s fire protection system and develops a numerical grading called a Public Protection Classification (PPC™). Here’s an outline of the items considered in the FSRS and the weight of each item used in calculating a PPC rating.

Emergency communications

Emergency reporting: ISO will credit basic 9-1-1 or Enhanced 9-1-1. Other items evaluated include E9-1-1 wireless, voice over Internet>Protocol (VoIP), and computer-aided dispatch (CAD).
3 points
Telecommunicators: ISO credits the performance of the telecommunicators in accordance with the general criteria of NFPA 1221, Standard for the Installation, Maintenance, and Use of Emergency Services Communications Systems. We also credit emergency dispatch protocols and the telecommunicators’ training and certification programs.
4 points
Dispatch circuits: ISO credits the number and type of dispatch circuits in accordance with the general criteria in NFPA 1221.
3 points
Emergency communications total: 10 points

Fire department

Engine companies: ISO compares the number of in-service pumpers and the equipment carried with the number of needed pumpers and the equipment identified in the FSRS. The number of needed engines depends on the basic fire flow, the size of the area served, and the method of operation.
6 points
Reserve pumpers: ISO evaluates the number of reserve pumpers and their pump capacity; other factors include hose and equipment carried.
0.5 points
Pump capacity: ISO compares the pump capacity of the in-service and reserve pumpers (and pumps on other apparatus) with the basic fire flow. ISO considers a maximum basic fire flow of 3,500 gpm.
3 points
Ladder/service companies: Communities use ladders, tools, and equipment normally carried on ladder trucks for ladder operations, as well as for forcible entry, utility shut-off, ventilation, salvage, overhaul, and lighting. The number and type of apparatus depend on the height of the buildings, needed fire flow, and size of the area served.
4 points
Reserve ladder/service trucks: ISO evaluates the number of reserve ladder/service trucks and the equipment they carry.
0.5 points
Deployment analysis: ISO credits the percentage of the community within specified response distances of pumpers (1.5 miles) and ladder/service apparatus (2.5 miles). As an alternative, a fire protection area may use the results of a systemic performance evaluation. That type of evaluation analyzes CAD history to demonstrate that, with its current deployment of companies, the fire department meets the time constraints for initial arriving engine and initial full-alarm assignment. The timing is in accordance with the general criteria in NFPA 1710, Standard for the Organization and Deployment of Fire Suppression Operations, Emergency Medical Operations, and Special Operations to the Public by Career Fire Departments.
10 points
Personnel: ISO credits the personnel available to respond to first alarms for structure fires. For personnel not normally in the fire station (on-call and off-duty members), ISO reduces credit for the responding members to reflect the time needed for notification, travel, and assembly on the fireground. ISO then applies an upper limit for the credit for personnel because it is impractical for a very large number of personnel to operate a piece of apparatus.
15 points
Training: Trained personnel are vital to a competent fire suppression force. ISO evaluates training facilities and their use; company training at fire stations; training and certification of fire officers; driver/operator, hazardous materials, and recruit training; and building familiarization and preincident planning inspections.
9 points
Operational considerations: ISO credits the standard operating procedures for structure firefighting and the establishment of an incident management system.
2 points
Fire department total: 50 points

Water supply

Supply system: ISO compares the available water supply at representative community locations with the needed fire flows for those locations. The supply works, water main capacity, or fire hydrant distribution may limit the available supply.
30 points
Hydrant size, type, and installation: ISO evaluates the design and installation of fire hydrants.
3 points
Inspection and fire flow testing of hydrants: ISO evaluates the frequency and completeness of fire hydrant inspections and the flow-testing program, which can include the use of calibrated hydraulic molding. ISO also includes credit for hydrant marking.
7 points
Water supply total: 40 points

Community risk reduction

Fire prevention code adoption and enforcement: This section assesses the Fire Prevention Code adoption and enforcement capabilities of a community. Items evaluated include adoption and maintenance of one of the model codes; number and qualifications of fire prevention personnel, including certification and continuing education; and fire prevention programs, such as plan review, certificate of occupancy inspections, quality control, code compliance, inspection of private fire protection equipment, fire prevention ordinances, and coordination with fire department training and preincident planning activities.
2.2 points
Public fire safety education: ISO evaluates the existence of a fire safety education program; the qualifications, training, and certifications of public fire safety educators; and the activities of the various public fire safety education programs, such as residential fire safety programs, fire safety education in schools, juvenile firesetter education programs, and fire safety education in occupancies with large loss potential or hazardous conditions.
2.2 points
Fire investigation: This section examines the fire investigation activities of a community and is based on establishing authority to conduct and enforce fire investigations, the number and qualifications of fire investigators, the activities of the fire investigation staff, and the use of the National Fire Incident Reporting System.
1.1 points
Community risk reduction total: 5.5 points
Survey total: 105.5 points

Divergence

Divergence: Even the best fire department will be less than fully effective if it has an inadequate water supply. Similarly, even a superior water supply will be less than fully effective if the fire department lacks the equipment, personnel, or operational considerations to use the water. If the relative scores for fire department and water supply are different, ISO adjusts the total score downward to reflect the limiting effect of the less adequate item on the better one.