Water fire suppression

This kind of fixed fire suppression installations can be classified into two groups:

a) Hydrant Networks Installations
b) Sprinkler Systems Installations


There are several options to design fire suppression hydrant networks, based on the characteristics of the risk (industrial plants, high-rise buildings, warehouses, tank yards, etc.) which will affect the construction features and the types of elements that will be used in the fixed fire suppression installation.

Closed loops with double 2 1/2” hydrants, columns with medium and long range monitors, and overhead or underground black iron or HDPE pipes are some of the options normally used to protect large industrial plants, mining sites, distilleries, grain storage plants, etc.

Upright nets or networks with 1 3/4” internal nozzles/fire hydrants, are appropriate for high-rise buildings such as family homes, business offices, hotels, etc.

A combination of both is also used to protect risks such as logistics centers, medium-sized manufacturing plants, or other specific risks.

Special consideration should be given in the design of fire protection networks when they are shared to feed hydrants, sprinklers and/or foam systems, as required.

Based on municipal, insurance, local and/or international regulations, MELISAM designs, supplies and installs the system that is best suited to meet the needs of the risk to be protected.


The water-based fire suppression systems consist mainly of sprinklers for cooling, fire suppression and/or control purposes.

Sprinkler systems may be classified according to the following:

a) According to the sprinkler to be used

  • Automatic sprinkler.
  • Protect spray nozzle.
  • Cooling nozzles.
  • Spray water nozzles.

b) According to the system

  • Wet System.
    Offices, warehouses, shopping centers, parking lots, etc.
  • Dry System.
    Cold stores, frozen product racks, etc.
  • Pre-action systems.
    Document storage facilities, telephone and electronic equipment rooms.
  • Deluge System.
    Solvent extraction plants, transformers, LPG tanks.

c) According to the triggering method

  • Automatic.
  • Manual.
  • Combines.

In addition, there is a wide range of automatic sprinklers to consider when designing a fixed fire suppression installation, including the various triggering temperatures (68 °C, 100 °C, 141 °C , etc.); response type (standard or quick); type of mounting (upright, pendant, wall-mounted, in-rack, etc.), scope (standard or extended range), and discharge flows (standard , ELO , ESFR, etc.).

MELISAM has an engineering and works department knowledgeable in local and international standards (NFPA, FM, GLOBAL RISK, etc.), as well as state-of-the-art IT support to design and install the sprinkler system best suited to each risk.

MELISAM INGENIERÍA uses in all its works UL FM certified products of the Reliable trade mark, a world-wide leader in water- and foam-based fire suppression.