Abstract:
An adjustable inert gas generation assembly for producing a flow of inert gas for introduction into a pipe network of a fire protection system includes an inert gas generator with an outlet in fluid communication with the pipe network and configured for selectively- producing a flow of inert gas to the pipe network at least at a first purity level and a second purity level, wherein the first purity level is produced while the assembly is in a first mode and the second purity level is produced while the assembly is in a second mode; wherein the second purity level is higher than the first purity level; and a control circuit in electrical communication with the inert gas generator and configured to selectively switch the inert gas generator between the first and second modes.
Abstract:
A fire protection sprinkler system and method of inerting a fire protection sprinkler system includes connecting an inerting system to the piping network of a fire protection sprinkler system having a piping network and at least one sprinkler head connected with the piping network. The inerting system includes an inert gas source that is adapted to supply inert gas to the piping network and an inerting gas vent assembly. The gas vent assembly has a gas vent adapted to discharge gas, a solenoid and a control. The solenoid is adapted to selectively open the gas vent and to close the gas vent. The gas vent discharges gas when the solenoid opens the gas vent and does not discharge gas when the solenoid closes the gas vent. The control is adapted to operate the solenoid in a manner that allows the gas vent to discharge gas for a limited amount of time.
Abstract:
A system for redundant delivery of fire suppression event data is described that includes a sprinkler system connected to a plurality of sprinkler heads through riser pipes used to carry a fire suppression medium, wherein the sprinkler system includes an event reporting interface. An alarm event reporting system is connected to the sprinkler system using the event reporting interface, where the alarm event reporting system has a first communications interface and a second communications interface. The alarm event reporting system communicates with a, central monitoring system using the first communications interface or the second communications interface, such that communications between the alarm event reporting system and the central monitoring system are maintained in the event of a failure in one of the communications paths.
Abstract:
The present disclosure relates to a sprinkler head 130 and a method for testing the sprinkler head 130, which comprises an inlet device 132 configured to operatively lead a fire-extinguishing medium 112 and air 114 from a distribution system 110 into the sprinkler head 130, an outlet device 132b configured to operatively release fire-extinguishing medium 112 and air 114 from the sprinkler head 130, a flow passage configured to lead fire-extinguishing medium 112 and air 114 from the inlet device 132 to the outlet device 132b, a valve device 134 configured to operatively be held in a first non-activated state by a triggering device 136 in the sprinkler head 130, so that the flow passage is closed, and configured to in an activated state operatively open the flow passage, when the triggering device 136 is activated in a heated state, so that air 114 and fire-extinguishing medium 112 may flow from the inlet device 132 to the outlet device 132b. The valve device 134 is configured to in a second non-activated test state operatively open the flow passage, so that air 114 and fire-extinguishing medium 112 may flow from the inlet device 132 through the flow passage and out through the outlet device 132b.
Abstract:
An attic fire protection system is provided. The system comprises a fluid supply manifold for supplying a fluid, positioned at an effective height below and parallel to the underside of a roof having a non-zero pitch angle. The system contains a plurality of fittings each having at least one exit port for directing the flow of the fluid, the fittings being spaced within at most a maximum effective distance apart from each other and being connected to receive fluid from the supply manifold, wherein the exit ports are structured to supply the fluid in a direction parallel to the underside of the roof. Most broadly, however, the fittings are structured or arranged to supply the fluid in a direction forming an oblique angle with the horizontal and the vertical, which may or may be exactly the same as the pitch angle of the roof. The system also includes a plurality of horizontal sidewall sprinklers each connected to a respective exit port of one or another of the fittings.
Abstract:
A hybrid fire suppression system includes a supply of pressurized inert gas, a pipe network connected in inert gas flow communication to the inert gas supply, a first inert gas nozzle, a second inert gas nozzle, and a water storage cartridge having an interior volume defining a water reservoir storing a limited amount of water. The water reservoir communicates with the second inert gas spray nozzle. The first inert gas nozzle connects with the first terminus for introducing a flooding flow of inert gas only into a first protected space. The second inert gas nozzle connects with the second terminus for introducing a flooding flow of inert gas and the limited amount of water from the water reservoir into the second protected space.
Abstract:
A sprinkler having a design such that they can be arrayed where the coverage of each exceeds 80 square feet - preferably less than 200 square feet in extra hazard or high piled storage environments up to ceiling heights of 25 feet or greater, including ceiling heights of approximately 30 feet or greater and being adapted to control through the maintenance of the heat release rate for the prescribed period of time established by NFPA- 13 standards for what are termed "Extra Hazard" and "High Piled Storage" occupancy in which sprinklers preferably having a K factor of 18-40 through the selective combination of pressure and trigger-speed provide sufficiently large drops of water to permit the same to maintain sufficient size and density after contacting the structural members generally encountered in warehouse-type facilities to be able to penetrate the fire plume. Specifically, in its preferred embodiment if the pressure is 7-10 psi, a diagonal line emanating from the center of the deflector to the edge of the obstruction (A) is greater than 3 times the height or 3 times the width of the obstruction.
Abstract:
The fire sprinkler system of the preferred embodiments is preferably installed in a space defined by two beams, such as rafters, extending along the width of a space and separated by a distance equal to a length of the space. The fire sprinkler system includes a supply line generally extending along the width of the space and generally located between the rafters, and a series of sprinklers connected to the supply line. Each sprinkler is adapted to disperse in a coverage area having a length and a width, which is substantially less than the length. Each sprinkler is oriented such that the length of each coverage area extends in opposite directions toward the rafters. The fire sprinkler system may also be installed in a space having a series of purlins extending the length of the space. In this variation, each sprinkler is located between two purlins.
Abstract:
A method for use in conjunction with a spraying apparatus, especially a fire extinguishing apparatus, said apparatus comprising a source of a medium, a pump means and means for passing at least a proportion of the medium to at least one nozzle (4). Some of the medium which is not passed to the nozzle is re-circulated back to the suction side of the pump means (3) when necessary and, at least when necessary, at least some of the medium being re-circulated is passed into a discharge pipe (15) before the pump means (3). The invention also relates to an apparatus.
Abstract:
Method for extinguishing a fire in a space, especially in a tunnel or equivalent, in which method an extinguishing medium is sprayed in the space by means of spraying heads. In a first stage of the method, the flow and temperature of the hot gases produced by the fire are influenced by spraying an extinguishing medium into the space, especially by creating in the space at least one curtain (7) of extinguishing medium, and at least some spraying heads (11, 12) in the space are pre-activated into a state of readiness, and in a second stage at least one spraying head is activated to produce a spray of extinguishing medium. The invention also concerns an apparatus.