WHAT IS A DRY CHEMICAL FIRE SUPPRESSION SYSTEM?

July 8, 2019

Fire suppression systems were created to provide an immediate response to fire in life-threatening situations. The first few minutes of a fire are critical to eliminating or containing the fire until help can arrive. Different environments mean different types of fire. Therefore, you cannot rely on one type of chemical to suppress every fire. This is why there are different types of fire suppression systems. The three common types used today are clean agent, wet chemical, and dry chemical fire suppression systems. In this blog, we will explore dry chemical fire suppression systems. Dry chemical systems release a dry chemical powder into a designated space to extinguish a fire. Sodium bicarbonate and mono-ammonium phosphate are the most common powders used in dry chem suppression systems. Sodium bicarbonate is for Class B and some Class C fires. Monoammonium phosphate is for ABC fires. In a dry chemical suppression system, a tank is filled with the dry powder and pressurized. When the system is activated, a high-pressure nitrogen cartridge will discharge and open the valve on the pressurized tank with the dry powder. The agent is then released into the piping and out of the nozzles of the suppression system to suppress the fire. After each use, a dry chemical system must be recharged to work again. Dry chem systems are not a new technology, but they are extremely reliable. Much like an ABC fire extinguisher with dry powder, a dry chem system will dump a lot of powder onto the hazard when activated requiring extensive cleanup after each use.

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Stepan Company

Stepan Company's vision is to create innovative solutions for a cleaner, healthier, more energy-efficient world. We want to accomplish that vision by partnering with you. As a publicly-traded, international manufacturer of specialty and intermediate chemical products, we collaborate with our customers to bring high-quality products that drive growth in the consumer space and functional markets such as construction, oilfield, agriculture, paints and coatings.

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