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CPVC sprinkler pipe inside a firestop mock-up. Chlorinated polyvinyl chloride (CPVC) is a thermoplastic produced by chlorination of polyvinyl chloride (PVC) resin. CPVC is significantly more flexible than PVC, and can also withstand higher temperatures. Uses include hot and cold water delivery pipes and industrial liquid handling.
A pipe support or pipe hanger is a designed element that transfer the load from a pipe to the supporting structures. The load includes the weight of the pipe proper, the content that the pipe carries, all the pipe fittings attached to pipe, and the pipe covering such as insulation .
Many modern fire alarm pull stations are single-action and only require the user to pull down a handle to sound the alarm. Other fire alarm pull stations are dual-action, and as such require the user to perform a second task before pulling down, such as lifting or pushing in a panel on the station or breaking a glass panel with an attached hammer.
Attempts have been made to increase the safety of bridges with pin and hanger assemblies by adding some form of redundancy to the assembly. Retrofits that add redundancy to pin and hanger assemblies include adding a "catcher's mitt"—a short steel beam attached to the bottom of the cantilevered girder that extends out beneath the suspended girder to "catch" the suspended girder should ...
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The fire triangle or combustion triangle is a simple model for understanding the necessary ingredients for most fires. [1] The triangle illustrates the three elements a fire needs to ignite: heat, fuel, and an oxidizing agent (usually oxygen). [2] A fire naturally occurs when the elements are present and combined in the right mixture. [3]
Fire proximity suits first appeared during the 1930s, and were originally made of asbestos fabric. Today they are manufactured from vacuum-deposited aluminized materials that reflect the high radiant loads produced by the fire. An early manufacturer of the aluminized suits was the Bristol Uniforms company under the direction of Patrick Seager Hill.
Tustin Hangar No. 1 fire, 11:48 am 7 November 2023. On 7 November 2023 at approximately 12:53am, a three-alarm fire broke out on the roof of the North Hangar. Orange County Fire Authority units responded, adapting a defensive strategy and letting it burn due to the risk of roof collapse. An investigation has been opened into the cause of the fire.