A fire protection system includes a plurality of fluid distribution devices coupled to the fluid supply pipes to define four fluid distribution devices above a floor. The fluid distribution devices generate a spray pattern overlapping one another to define a rectangular fluid distribution area 2.5 ft. The rectangular area having a first pair of edges extending parallel to the fluid supply pipes and a second pair of edge extending perpendicular to the first edge. The fluid distribution devices are axially aligned above a corner of the rectangular area, the fluid distribution area defined by a grid of one square foot areas totaling an area no more than 12 ft.×8 ft., the rectangular area of fluid distribution having a total fluid density of at least 60 gpm/sq. ft., the rectangular area including a first zone of fluid distribution of a 4 ft.×4 ft. area.

A system for storing a hazardous product including a housing unit defining a product opening and a product door coupled to the housing unit adjacent to the product opening, wherein the product door is configured to form a seal with the housing unit about the product opening in response to a thermal event.

An improved system detects an environmental anomaly in a shipping container and initiates a mediation response through a generated layered alert notification. The system includes sensor-based ID nodes associated with packages within the container, and a command node mounted to the container communicating with the ID nodes and an external transceiver on a vehicle transporting the container. The command node is programmed to detect sensor data from the ID nodes; compare the sensor data to package environmental thresholds in context data related to each ID node; detect the environmental anomaly when the comparison indicates an environmental condition for at least one package exceeds its environmental threshold; responsively generate a layered alert notification identifying a mediation recipient and mediation action, and establishing a mediation response priority based upon the comparison; and transmit the layered alert notification to the transceiver unit to initiate a mediation response related to the mediation action.

Systems and methods are described for detecting and initiating a response to an environmental anomaly in a shipping container. Generally, a system includes two sets of ID nodes within and outside the container and a command node mounted to the container. The command node is specially adapted to monitor the different sets of ID nodes for unanticipated non-broadcasting according to communication profiles for respective ID nodes in each set and detect an unresponsive group of ID nodes and what set of ID nodes the unresponsive ones are in. The command node identifies the anomaly when the number of unresponsive ID nodes exceeds a threshold setting, automatically generates an alert notification on the anomaly with an alert level setting based upon whether the unresponsive ID nodes are in the first and/or second set of ID nodes, and initiates a mediation response by transmitting the notification to the transit vehicle transceiver.

A sprinkler for a fire suppression system includes a deflector plate having five different types of slots extending from a periphery of the plate toward a center of the plate along radially extending lines. The slots are arrow shaped, club shaped and key hole shaped. Arrow head slots which align with frame arms supporting the deflector plate are wider than the thickness of the frame arms. Club shaped and arrow shaped slots proximate the plane of the frame arms are asymmetrical with respect to radial lines extending from the center of the plate, while arrow shaped and key hole shaped slots distal to the plane of the frame arms are symmetrical with respect to radial lines extending from the center of the plate.

A fire protection sprinkler system includes a horizontal barrier that covers two adjacent racks, and the vertical flue space between the racks. The horizontal barrier is provided at a predetermined height, and has a width that is at least equal to a width of the rack, and a depth that is at least equal to a sum of a depth of the rack, a depth of the other rack, and a depth of the vertical flue space. In addition, the horizontal barrier can be a sheet having one or more apertures. The system also includes a rack level fire protection sprinkler connected to a fluid supply conduit, and being disposed in the vertical flue space below the horizontal barrier. The rack level sprinkler has a K-factor of 11.2 gpm/(psi).sup.1/2 or greater, and is vertically spaced from commodities stored on the rack and the other rack covered by the horizontal barrier.

A fire extinguishing robotic service device is described for use on a robotic picking system grid. The fire extinguishing robotic service device is capable of driving to any location on the grid in order to extinguish a fire. The service device may also be provided with a camera or a sensor to locate the fire.

A fire protection sprinkler system includes a horizontal barrier that covers two adjacent racks, and the vertical flue space between the racks. The horizontal barrier is provided at a predetermined height, and has a width that is at least equal to a width of the rack, and a depth that is at least equal to a sum of a depth of the rack, a depth of the other rack, and a depth of the vertical flue space. In addition, the horizontal barrier is a sheet having one or more apertures. The system also includes a rack level fire protection sprinkler connected to a fluid supply conduit, and being disposed in the vertical flue space below the horizontal barrier. The rack level sprinkler has a K-factor of 11.2 gpm/(psi).sup.1/2 or greater, and is vertically spaced from commodities stored on the rack and the other rack covered by the horizontal barrier.

An exemplary robotic parking device of the present disclosure includes a number of stacks of containers. The stacks being positioned within a frame structure including uprights and a horizontal grid disposed above the stacks. The grid having substantially perpendicular rails on which load handling devices can run. Cars or vehicles are positioned in containers and are moved into and out of the stacks by the robotic handling devices running on the grid. The cars are put into the grid at entry points that may be positioned at points under the stacks.

A vehicle for use with an object handling system, the object handling system including two substantially perpendicular sets of rails forming a first grid, a plurality of first uprights supporting the first grid, a plurality of containers arranged in stacks, each stack being located underneath the first grid, one or more robotic load handling devices configured to drive on top of the rails of the first grid, the one or more load handling devices including means for removing or replacing at least one container from the stacks. The vehicle includes two substantially perpendicular sets of rails forming a second grid substantially at the top of the vehicle above a storage space for carrying containers. The second grid interfaces with the first grid to allow the one or more load handling devices to drive from the rails of the first grid onto the rails of the second grid.