unique227

UNIQUE227 is the brand name for Heptafluoropropane (HFC-227ea) manufactured by Unique Fire Industry Sdn. Bhd. Unique Fire Industry Sdn. Bhd. provides the highest quality assurance of its HFC- 227ea and is supported by a team of highly trained and qualified Chemical Engineers and Scientists.

The HFC-227ea is the leading Clean Agent replacement for Halon 1301 in the special hazards suppression industries worldwide. It is traded under various brands including Orient 227® (Orient Corporation), FE-227/FM-200 (Dupont), and Chemori 227® (Chemori Americas). However, the National Fire Protection Association (NFPA) 2001 Clean Agent makes reference only to the generic name of chemical, i.e. HFC-227ea.

UNIQUE 227® received its component recognition from Underwriters Laboratories (UL). UL is an independent third-party organization that certify the purity specifications as required by the NFPA 2001 in order to be an effective fire extinguishing agent. The UL Listings is based on UL 2166 Standard for Halocarbon Clean Agent Extinguishing System Units. UNIQUE 227® is listed under UL File EX 27052. All testing were performed in accordance to NFPA 2001 (Latest Edition).

UNIQUE 227® is an effective fire extinguishing agent that can be used for the fire protection of Class A (solid), Class B (liquid and gas), and Class C (electrically energized) hazards. It is also suitable for use as an inertion agent in explosion suppression applications.
Of the many methods and substances used to prevent and extinguish fires, UNIQUE 227® fire protection agent offers unique advantages over traditional extinguishants. It is safe for people and assets, and it is an environmentally preferred selection.

Safe for people. The EPA and NFPA classify the HFC-227ea as acceptable for use as a total flooding agent in normally occupied spaces. It is characterized by low toxicity.
Safe for assets. UNIQUE 227® is electrically non-conductive, non-corrosive, and free of residue. It uses a unique mechanism to absorb the heat energy from combustion reaction thereby, the reaction cannot sustain itself and the combustion cease. Like Halon, UNIQUE 227® will completely vaporize and require no clean up after system discharge.

Safer for the environment. UNIQUE 227® contains no chlorine or bromine as a result, it does not contribute to the destruction of stratospheric ozone. However, like many fluorine-based gases, the HFC-227ea has a moderate global warming potential.

Quality Specification
UNIQUE 227® quality standards can be summarized as follows:

Purity, % by mole, minimum : 99.95
Acidity, ppm by weight, maximum : 3.0
Moisture, % by weight, maximum : 0.001

Typical Applications
UNIQUE 227® is used as a fire protection agent in various high value premises that require full room total flooding application, such as data processing centres, electrical rooms, telecommunication switching centres, museum, hospital, airport, engine rooms, mass transit vehicles, storage rooms, libraries, and computer rooms.

Minimum Design Concentration
Table 1-1 gives the minimum design concentration required for variety of materials for fire extinguishment. According to NFPA 2001 (Latest Edition),

Class A hazard extinguishment is based on a 5.584% extinguishing concentration. With a 20% safety factor per NFPA 2001 (5.584 X 1.2 = 6.7%) or the minimum concentration of Heptane, whichever is greater. The minimum design concentration for Class A hazards shall be 6.7%.
For Class B hazards, please refer to the Annex B of NFPA 2001 (Latest Edition) for the cup burner extinguishment concentration value for a particular Class B fuel(s) to be protected. Choose the fuel with the highest cup burner extinguishment value and apply a 30% safety factor (multiply this extinguishment concentration value by 1.3) for the design concentration. The minimum design concentration for the protection of all Class B hazards shall be 8.7% based on the UL2166 total flooding test program.

Table 1-1: Minimum Design Concentration

note: Effective fire extinguishing requires introducing the concentration of HFC-227ea between 6.7% and 9%. The enclosure temperature has a great influence on the amount of agent needed. The higher the enclosure temperature, the less HFC-227ea agent is required. Conversely, the lower the enclosure temperature, the more HFC-227ea agent is required. This must be taken into account when calculating agent requirements.