Water sprinkler systems, automatic types

Regarding fires, water is the primary extinguishing agent, and it should be available in adequate supply and pressure at all of the locations in the plant. The layout for various types of installations and the appropriate recommendations are found in the standards of the National Fire Protection Association. Fire hydrants, hose lines, automatic sprinkler and water spray systems should all be a part of the permanent equipment facilities of the plant. 

Pre-action System A type of automatic sprinkler system in which thennostatic devices are employed to charge the system with water before individual sprinkler heads are fused. 

Is there a suppression system Yes El NoD If yes, describe type, layout, capability, etc. Buildings and 6581 are provided with automatic, fire protection sprinkler systems throughout, except the Zone 1 SCBs and Zone 2A where water sprinklers would create a hazard. Zone 2A is equipped with manual AliW fire suppression systems. The Zone 1... 

In areas where fire potential and the risk of injury or damage are high, automatic fire-extinguishing systems are often used. These may be of the water sprinkler, foam, carbon dioxide, halon, or dry chemical type. If an automatic fire-extinguishing system is in place, laboratory workers should be informed of its presence and advised of any safety precautions required in connection with its use (e.g., evacuation before a carbon dioxide total-flood system is activated, to avoid asphyxiation). 

A combiuatiou of water discharge devices (sprinklers), distribution piping to supply water to the discharge devices or more sources of water under pressure, water flow controlling devices (valves), and actuating devices (temperature, rate of rise, smoke, or other type device). The system automatically delivers and discharges water in the fire area. 

The System 80+ Standard Design is designed to preclude water spray from the fire protection system onto safety-related equipment. The sprinkler systems protecting the safety-related equipment is of the automatic sprinkler type. Actuation of these sprinkler systems requires the opening of the fusible link sprinkler heads and detection by combustible-products and/or heat detectors. In addition, the operator has the capability of isolating flow from the control room by isolating the Sub-sphere Building headers or, locally by manual isolation valves. 

Wet-Pipe Systems. This type of system contains water under pressure at all times water will be discharged immediately on operation of an automatic sprinkler. Water flowing from the wet-pipe sprinkler system actuates an alarm valve that gives off a signal. Hgnre 4.92 illustrates the total concept of the wet-pipe antomatic sprinkler system. 

There are several types of automatic sprinkler systems. These systems have piping of different sizes with sprinkler heads attached and connected to a large water supply. These heads are heat activated by a fire. They will then discharge water over the fire area. There are basically six types of automatic sprinkler systems. 

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