Fire Protection Systems

Testing and maintenance of the fire protection systems are required to assure that system operate properly.

Testing requirements vary from quarterly, semi-annual and annual per local fire department and insurance requirements.


Wet Pipe Fire Sprinkler System:

Wet fire Sprinkler system is the most common of all fire sprinkler systems. This system consists of water that is constantly maintained within the sprinkler piping. When a sprinkler activates this water is immediately discharged onto the fire.

Annual Testing and Certification:

Our technician will inspect sprinkler heads to assure proper type, indicate if replacements are needed, and check for proper coverage per NFPA code. In addition our technicians will check any out of code sprinkler heads, such as painted, damaged, and out-dated sprinkler heads.

Main test will be performed with static residual pressure, and then followed by a flush of main drain and inspectors test vale. Once completed, our clients and the fire department will receive a fire sprinkler inspection report per NFPA 25 requirements.

Dry Pipe Fire Sprinkler System:

Dry fire sprinkler systems provide automatic protection in spaces where freezing is possible. Typical dry fire system installations include unheated warehouses and attics, outside exposed loading docks and within commercial freezers. A dry fire sprinkler system is one in which pipes are filled with pressurized air, rather than water. The dry-pipe valve prevents water from entering the pipe until a fire causes one or more sprinklers to operate. When a fire occurs, the air escape, the dry pipe valve releases, and then water enters the pipe, flowing through open sprinklers onto the fire.

Pre-Action Fire Sprinkler System:

This system discharges in a two-step manner, first, the modern detection system identifies smoke or heat, which turns on a pre-action valve that allows water to circulate piping and efficiently creates a wet pipe sprinkler machine. second, individual sprinkler heads release to allow water flow onto the fireplace.

Annual Testing and Certification:

Our technician will take a small sample from multiple locations on the system piping and test the specific gravity of the solution to determine the effective freeze and burst points.

Existing NFPA13D systems (systems installed before September 30, 2012) must be tested annually by a qualified individual. NFPA 13D provides two alternative test procedures. In the first alternative, the system is drained and two solution samples are taken, one near the beginning and one near the end of the draining process. In the second alternative, the system is not drained and two solution samples are taken, one at the highest practical elevation and one at the lowest practical elevation of the system.

Following the annual test, a tag must be attached to the riser indicating the date of the last test,  he type and concentration of antifreeze solution, the date the antifreeze was replaced (if applicable), a statement indicating if the entire system was drained and replaced with antifreeze and a notice to test the concentration of the solution at yearly intervals per NFPA 13D.


Anti-Freeze Fire Sprinkler System:

A solution of a water and an active antifreeze factor is flooded into wet pipe systems to preserve the water from freezing. System usually contain a mixture of water and either propylene glycol or glycerin at specific ratios.

5 Year Internal Investigation:

Our technician will disconnect the piping at various locations of the system piping, conduct a visual inspection and check for corrosion and debris. Upon completion, a Certificate will be sent to you. This service meets NFPA 25 requirements for 5 year obstruction investigation.

Deluge Fire Sprinkler System:

Deluge fire sprinkler systems are generally utilized for high danger business and commercial packages, which includes power plants, chemical processing facilities, and plane hangars, in which excessive quantity, excessive speed suppression is obligatory to obviate the spread of fire to different regions of the facility.

Fire Pump Testing and Maintenance:

Fire pumps and connected equipment are needed/demanded to be occasionally inspected, tested, and maintained by NFPA 25: Standard for the careful examination of something, Testing, and Maintenance of Water-Based Fire Protection Systems. Once-a-year fire pump testing checks that your fire pump is doing as expected properly and will be able to respond to a call to service.

Annual Inspection & Performance Testing of Fire Pump:

dnD Fire Protection Inc provides the labor and material required to conduct a full performance flow test of the fire pump, including electrical readings on the fire pump controller and performance ratings of the fire pump at churn, 100% flow and 150% flow. Upon completion, you will receive a Fire Pump Test Report. This service work meets NFPA 25 and NFPA 20 requirements for Annual Inspection and Performance Testing of Fire Pump.

Monthly Churn Test:

dnD Fire Protection Inc provides the labor and materials required to conduct a monthly churn test, without the water flowing. Our technician will record pressure at the discharge side and the suction side of the pump, record the rpm reading and ensure that the casing release valve operates properly. This service work meets with NFPA 25 requirements for weekly churn testing of electric fire pumps.