HELSINKI, Finland, May 27 /PRNewswire/ --

Marioff Corporation Oy has been selected by the Helsinki Public Works Department to install a HI-FOG(R) Water Mist Fire Protection System in the city's new underground tunnel service network. The installation will be Finland's first automatic tunnel fire protection system. Marioff is part of UTC Fire & Security, a unit of United Technologies Corp. (NYSE: UTX).

The Helsinki underground service network will direct road traffic under the downtown area, allowing the city to expand its pedestrian zones. The project includes a two-kilometre service tunnel, one kilometre of which will be protected by the new HI-FOG(R) system.

"This is a very important project for Helsinki, and we are pleased to be working with the City's planners to make the service tunnels safer," said Markku Vuorisalo, Marioff's General Manager of Transportation and Infrastructure.

The HI-FOG(R) system uses high pressure to produce a fine water mist that combines the extinguishing characteristics of water with the penetrative qualities of gases to minimize property damage and environmental hazard upon activation.

"HI-FOG(R) is suitable for a variety of land-based applications, especially in retro-fitting, where its thin tubes and multiple power options have a significant advantage over competing products," says Vuorisalo.

Marioff Corporation Oy was founded in 1985 and is headquartered in Vantaa, Finland. The company's industry leading HI-FOG(R) water mist fire protection system offers major advantages over conventional water sprinkler systems and is installed in passenger cruise ships, metros and railway stations, commercial buildings, hotels, heritage sites, museums, IT centres and factories. Marioff Corporation Oy is part of UTC Fire & Security, which provides fire safety and security solutions to more than one million customers around the world. Headquartered in Connecticut, U.S.A., UTC Fire & Security is a business unit of United Technologies Corp., which provides high technology products and services to the building and aerospace industries worldwide. More information can be found at www.utcfireandsecurity.com .

Web site: http://www.utcfireandsecurity.com

Kimberly Reidy of UTC Fire & Security, +1-860-284-3094, Kimberly.reidy@fs.utc.com