NFPA 20 and NBR 16704 Fire Pumps: Central Guide to Complete Systems by Occupancy

1. The four standards governing fire pumps in Brazil

Before selecting the pump, you must understand which standard governs which component of the fire-fighting system. Confusion between standards is the leading cause of projects rejected at Fire Department inspection and of wrong quotations in the bidding phase.

NFPA 20 (Standard for the Installation of Stationary Pumps for Fire Protection) is the international reference standard for the PUMP — defines design, installation, maintenance and testing requirements for stationary pumps. NBR 16704 (Stationary pump installation for fire protection) is the Brazilian-specific PUMP standard, harmonized with NFPA 20. NBR 10897 (sprinklers) and NBR 13714 (hydrants and hose reels) govern the HYDRAULIC SYSTEMS the pump feeds — not the pump itself.

Additionally, each state has Fire Department Technical Instructions (IT) defining requirements per occupancy type (residential, commercial, industrial, special).

2. Technical guides by occupancy type

FB Bombas maintains four technical libraries dedicated to the most frequent occupancy scenarios in Brazilian projects. Each library covers typical flow and pressure requirements of the occupancy, the most suitable driver technology (electric, diesel or both in redundancy), mandatory components (jockey, panel, test valves, bypass) and applicable state IT.

• Logistics warehouses — ESFR or CMSA sprinkler systems, high flow, moderate pressure, electric/diesel redundancy common
• Shopping malls, hospitals and condominiums — light to ordinary sprinkler class, mandatory hydrants, redundancy and automated supervision
• Power plants, refineries and fuel terminals — tank protection (sprays, foam), classified-area containment curve, mandatory diesel motor in several scenarios
• Pre-assembled complete skid — plug-and-play solution for tight-deadline projects or sites without dedicated pump house

3. Technical guides by system component

Fire-fighting systems are composed of main pump (electric or diesel), jockey pump (pressurization and pressure maintenance), control panel (NFPA 20 dedicated), test and discharge valves, bypass and instrumentation. Each component has its own standard and sizing — FB Bombas maintains technical libraries specific to the most critical components.

• Main pump with electric motor — NFPA 20 dedicated controller, automatic startup, phase monitoring, connection to primary and secondary power source
• Main pump with diesel motor — minimum 8-hour autonomy, dedicated fuel tank, batteries with automatic charger, solenoid startup
• Jockey pump — sized at 1% of main pump flow (NFPA 20 A.4.26), differential setpoints, independent panel, function: keep network pressurized and detect leaks
• Combined sprinkler + hydrant + pressurization systems — three systems, three distinct pumps, sequential startup logic per NFPA 20

4. Decision flow to select the correct technical guide

The choice of starting technical guide depends on the project phase. In conceptual phase (descriptive memorandum, preliminary design), the correct starting point is the occupancy guide — it presents applicable IT, minimum protection levels and expected driver technology. In detailed engineering phase, the starting point is the component guide — it enters dimensional, electrical or fuel specifications, and pump integration.