Description：
Lightning: when the lightning strikes , Magnetic Resonance Imaging(MRI) is affected easily to stop working within being dangerous for patient and other equipment throughout the whole emergency . Faulty arc :The mainly reason is faulty arc for fire accident and difficult to figure out during early fire . because the hidden fire point surround the medical equipment , power supply line , and power switch create faulty arc with high heating energy . Harmonic and three phase unbalance :Electrical devices cause lots of harmonic to interfere operation of equipment including CT, MRI , and X-RAY. Those scans can be performed on every region of body for a variety of reasons (e,g, diagnostic , treatment ,planning , intervention , or screening ) by X-RAY source and a detector assembly...
Description：
Lightning: All of a sudden people recently benefit from the marked developing service of bank and finance as through it was integrated with network of thing. At the same time , lots of electronic devices and computers must escape the influence of ambient factors such as ground potential attack when lightning occurs .Network bank , mobile bank ,and ATM etc data analyse center are be sure of electrical safety. Faulty Arc : As up-mentioned , mass of wiring paths and electronic devices gathering to elevate the load in circuit . common causes of arc faults include faulty connection and ground potential attack . Arc fault caused by them discharge translates into heat , which can break down the wire’s insulation and damage equipment important , even possibly trigger an electrical fire. ...
Description：
Lightning: Municipal office is endanger on the condition of lightning strike and we always focus on electrical safety at risk of lightning.and there are equipment of communication , computer , and electronic devices easily being influenced by lightning strikes. When it hamper the working of equipment and officers because of equipment damaged or malfunction, it is important for hard base unit of municipal administration related to citizen benefit and country development . Arc fault: Over-current protector prevent the arc fault short circuit related to the metal short circuit in municipal building. Faulty connection and short circuit in single phase with ground, leading to electrical spark and arc . Continual arc happened on condition of high resistance at low current in fault...
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Lightning: Anti-fire and lightning protection are necessary for paper factory.Because Raw material and product such as pulp and paper are flammability and explosive. Arc fault: Paper production is characterized by huge loading in paper industry , and easy to cause arc fault and fire accident . there are two mainly reasons for triggering fire . one is damage of lay of insulation of transformer's winding . two is faulty connection which is principal factor causing high-temperature arc, and fire pulp and paper around faulty point. 1 Fire fast spreading: pulp and paper through the equipment on production line have lots of scraps . those of them are flammability and explosive. 2 Many fire points : dust and scraps come from process of paper production will be existed everywher...
Description：
1. Lightning attackLightning disaster has been threatening the production safety of cargo port seriously. A large number of fixed and mobile handling equipment on the site are generally scattered in storage and freight yard areas of port. Such handling and transport equipment, generally of large volume, are easily struck by lightning.Accident caseOn the evening of November 22, 2011, 100,000-DWT oil tanks #31 and #32 in tank field of a Dalian group were stuck by lightning and on fire. Dalian Fire dispatched more than 700 firemen and 180 firefighting trucks quickly and extinguished the big fire basically after more than one hour of emergency fire-fighting.From the analyses on historical lightning disasters data, according to the meteorological lightning-prevention experts, lightning disaster...