FIRE SPRINKLERS

WET SYSTEMS: The fire sprinkler system, in its most common form, is a series of hydraulically calculated pipes which are charged with water. Each sprinkler head has a heat sensitive component which, when a certain temperature is reached, will allow water to flow through the head. Sprinkler heads can be rated for different temperatures, which is determined by the environment in which they are placed.

DRY SYSTEMS: In a dry system there is no water in the pipes connected to the sprinkler heads. The air in the pipes is under pressure created by a pump. This pressure holds back a flapper in the dry valve which has water on the other side. When sufficient heat is applied to a sprinkler head the air is released and the flapper allows water to flood the system. This system is used mostly in unheated areas where the water would freeze in the pipes, such as in garage and attic areas, etc.

PRE-ACTION SYSTEMS: These are a modified type of dry system where a fire alarm system is used to trigger the water flow. The usual configuration is a cross zoned type which has the following operation. The area to be protected has two types of detector... a heat and a smoke. When either is tripped into alarm the panel registers this however the second type of detector must also be alarmed before the water is allowed to flood the system. Water may still not flow if a sprinkler head has not been triggered. This type of system is used in areas which are likely to sustain heavy damage due to water, such as a computer room, electrical room or library.



FIRE EXTINGUISHERS AND HOSES

There are a variety of extinguishers rated by the type of fire they are used for.

Class A... is for wood, trash and paper.
Class B... is for liquids and grease.
Class C... is for electrical equipment.

Therefore, an ABC extinguisher is the most popular type.

The schedule to the left, shows the requirements for the testing and inspection as per NFPA. At ACE, when we recharge an extinguisher, we completely dismantle it and empty out any remaining powder. (We have a recycling machine for this powder.) It is essential that this is done to ensure that there are no lumps in the powder.
We also replace all rubber gaskets and seals. A practice that is not always adhered to in the industry.
Hoses are re-racked each year, which stops creasing in the hose and eliminates cracks. This is a requirement and must be done once a year.

GAS EXTINGUISHING SYSTEMS

NAF-SIII SYSTEMS
SES-Cease Fire NAF-SIII Fire Suppression Systems are designed to protect sensitive industrial and commercial facilities, assets and other items vital to a company's operation.

NAF-SIII is a fire extinguishing agent that was specifically developed as a replacement for Halon 1301. It extinguishes fires mainly by physical means but also by chemical means. It must be used in well sealed enclosures.

NAF-SIII is approved by Environment Canada and is on the US EPA SNAP list with no restrictions. NAF-SIII is included in the NFPA Std 2001. Currently, there are more than 1,000 systems installed around the world.

Why use NAF-SIII:
• Fast fire suppression. Less fire damage.
• Uses less agent than other 'clean' agents. Less space and weight requirements for agent storage. Cost effective.
• Suitable for occupied areas.
• The preferred agent when all environment concerns are considered. Global Warming, Atmospheric Lifetime, and Ozone Depletion.
• Listed by Underwriters' Laboratories of Canada.

Some Typical Uses for NAF-SIII:
Computer Rooms / Data Processing Facilities / Telecommunication Facilities / Microwave Relay Stations / Cellular Transmitter Buildings / Robotics / Control Rooms / Switchgear Equipment / Anechoic Chambers / Research Laboratories / Flammable Material Stores / Museums.

CARBON DIOXIDE SYSTEMS - C02

Carbon dioxide is a reliable, versatile and efficient fire fighting agent. It has provided decades of successful operation. It extinguishes fires by diluting the oxygen to a point where combustion can no longer be supported.

The SES-Cease Fire Carbon Dioxide Systems utilize a unique patented Unibody Cylinder Valve design. The only new innovation in cylinder valves for fire protection systems in a quarter of a century.

Why use Carbon Dioxide:
• Standard commercial product. Readily available in towns across Canada.
• A large number of manufacturers. Agent competitively priced.
• Carbon dioxide is inert and does not decompose. No cleanup of agent required.
• Vaporizes completely on discharge. No cleanup of agent required.
• Very economical when frequent discharges occur (engine test cell protection).
• Can provide excellent protection even when a total enclosure is not available.
• Listed by Underwriters' Laboratories of Canada.

CAUTION:
On discharge, carbon dioxide will reduce visibility and cause suffocation. Enclosed spaces must be evacuated before system discharges.

Some Typical Uses for Carbon Dioxide:
Gas Turbine Generators / Diesel Generators / Oil Quelching / Paint Spray Booths / Transformer Vaults / Hydraulic Oil Cellars / Rolling Mills / Record Storage / Hydo-Electric Generators / Fur Storage Vaults / Dip Tanks / Newspaper Production / Oil Circuit Breakers / Food Processing.



Fire Extinguisher Schedule Check

EVERY MONTH

Inspect all portable fire extinguishers

EVERY 6 MONTHS
Conduct inspection and maintenance of special extinguishing systems

EVERY 5 YEARS
Hydrostatic test of carbon dioxide and water type fire extinguishers

EVERY 6 YEARS
Dry chemical extinguishers shall be emptied and proper maintenance provided

EVERY 12 YEARS
Conduct hydrostatic testing of dry chemical fire extinguishers as required