FM approvals for protecting combustion turbines and machinery in enclosures with water mist

Published:  02 July, 2013

Marioff receives extended FM approval for its gas-driven pump unit and a new FM approval for its sprinkler pump unit (SPU) which use HI-FOG water mist fire protection system.

The new and existing system approvals enable Marioff to provide water mist fire protection for a wider range of combustion turbine and machinery configurations in enclosures, while also providing more flexible system installation criteria.

The maximum ceiling height was extended up to 11 meters, whereas the maximum protected volume is 1375 m3. The nozzle installation criteria have been simplified because the new approvals eliminate the need for door nozzles in all cases and allow for the installation of nozzles at different heights around the turbine, as specified in the installation guidelines.

In addition to the extended GPU FM approval, Marioff has received a new FM approval for its SPU systems. The same design and installation criteria apply to both pump systems so they can be used as backup, if redundancy is required.

The new approval enables Marioff to provide customers with more complete fire protection solutions for various commercial buildings, including data centres, hospitals, hotels and heritage sites. Spaces housing machinery in these buildings can now also be protected with the same pump unit.

“Close cooperation with a gas turbine manufacturer made it possible for Marioff to optimize the approval parameters to better meet specifications and open new opportunities within the sector,” said Dr. Maarit Tuomisaari, senior manager, research, testing & approvals, Marioff.

  • Operation Florian

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