The fire hose was invented by Jan van der Heyden in 1672 with the goal of improving the capability of fire marshals to extinguish fires in his native Amsterdam. It is interesting to note that van der Heyden was not a fire fighter. He was an artist and an inventor but he certainly made a priceless contribution to the field of fire fighting by inventing the fire hose. When you imagine a fire fighter Jason Sanders Jersey , the likely picture that comes to mind is someone clad in fire-fighting suit and carrying a fire hose.


While modern fire fighting equipment have been developed to control and contain fires, the fire hose remains as the single, most important tool because of its unique ability to enable a fire fighter to gain access to the site of the blaze and control the direction of the water to completely douse the flames. Aside from water, the fire hose can also deliver other fire retardants like foam at a minimum of 0.33 liter per second. The typical fire hose consists of one or more outer layers of fabric with an inner layer of rubber. A distinct feature of most fire hoses is that they have been specifically designed to be stored flat. This saves space when it has to be stored Jerome Baker Jersey , either in a hose reel or in a hanging rack.


There are different types of hoses designed for fire fighting purposes. Those that are designed and manufactured to be used under positive pressure are called discharge hoses. This class of hoses include the attack hose, booster hose, forestry hose, relay hose and the supply hose. Attack hoses Mike Gesicki Jersey , as the name suggests, are used to deliver a jet of water from a fire engine while supply hoses are used to transport water to the fire engine. On the other hand, hoses used under negative pressure are termed suction hoses.


Fire hoses are also classified based on size. To date, there are five major classes which include the 1 ?? inch hose Kenny Stills Jersey , the 2 ?? inch hose, the 3 inch and the 5 inch hoses, the Booster and the Hard Suction hose. The 1 ?? inch hose is basically used whenever fire fighters have to enter a building to contain the fire. The 2 ?? inch hose is also known as Blitz Line and it is primarily used to fight fittings massive fires. The 3 inch and the 5 inch hoses are generally used as the main supply lines to carry water from sources like a fire hydrant. The Booster is used for small blazes and during clean-up operations. The Hard Suction hose is used to ferry water from other possible sources aside from the hydrant.


The older types of fire hoses need to be hung after use because water that is left inside for extended periods can affect the hose material. However, modern fire hoses are manufactured from different types of fabrics and elastomers. These materials are more durable and allow fire hoses to be stored even when wet without compromising the integrity of its material. Modern hoses are also lightweight and they have been designed to withstand the effects of various chemicals and sunlight. As technology advances Ryan Tannehill Jersey , new knowledge and materials are being integrated into the composition of existing hoses to further boost their efficiency.

"

NAIROBI, May 19 (Xinhua) -- At least 19 organizations in Kenyahave been affected by the ransomware virus in an ongoing globalhacking attack.


Communication Authority of Kenya (CA) on Friday issued theupdate, noting the WannaCryptor virus has infected networks andcomputers the East African nation.


The number is an increase from the previous five reported on May13 by the authority in an attack that has affected over half amillion users globally as anxiety mounts amid today's deadlineissued by the hackers.


""So far, the National KE-CIRT has received 19 cases of instanceswhere the WannaCryptor virus has infected networks and computers inKenya. The authority will continue working with stakeholders tomitigate the effects of such instances while encouraging parties toput in place preventive mechanisms Cameron Wake Jersey ,"" said the authority'sdirector-general Francis Wangusi in a statement Friday.


Information and Communication Technology Cabinet Secretary JoeMucheru had named Kenyan banks as among institutions targeted inthe large-scale attack against computers worldwide that began lastweek.


He noted the software encrypts systems and denies the owneraccess to them, while the perpetrators demand payment using Bitcointo allow access.


""Individuals and organizations are discouraged from paying theransom, as this does not guarantee access will be restored,"" saidWangusi.


The authority formed the National Kenya Computer IncidentResponse Team (National KE-CIRT) to help in the coordination offighting the virus.


CA said National KE-CIRT is working with other governmentagencies Reshad Jones Jersey , banks, telecoms, academia and information technologyexperts to enhance security of Kenya's cyber infrastructure.


Almost 80 percent of Kenya's servers are based on Windows,another 16 percent on unix or the Linux variant Minkah Fitzpatrick Jersey , making the countryvulnerable.


Industry experts noted that more companies are likely to betargeted before the end of the hacker's deadline, but addedtracking the firms may present a challenge as many businesses arelikely to shy away from publicizing the attacks.


Tens of thousands of computer users around the world are anxiousas the deadline to pay ransom issued by hackers is set to endtoday.


WannaCry has exposed the widespread susceptibility of computersacross the globe, with Kenyan experts asking firms to backup datain flash drives and cloud. Enditem

"

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