Wednesday, 22 August 2012

SHELL warning when filling up petrol‏ (Static electricity)






We want to share the lesson of the day with everyone Static electricity in Petrol Stations As a continuation of the video about static electricity in which a girl had a fire accident on getting out of her car and directly touching the nosepiece, we come across a similar case: With the generalisation of self-service facilities in petrol stations people should be warned about the outbreak of fires resulting from static electricity while they are pouring in petrol. 150 cases of this type of fire have been investigated and the results were very surprising. 1-Of the 150 cases, more happened to women than men, due to their habit of getting in and out of the vehicle while the petrol is being poured in. 2-In the majority of cases the people had re-entered their cars when the hose was still pouring petrol out (the danger of the triggers on the nosepieces). When they finished refuelling and got out to remove the hose pistol the fire began, as a result of the static electricity. 3-The majority of those affected used rubber-soled footwear and clothes of synthetic fibres. 4-Never use mobile phones when filling up with fuel. 5-It is well known that it is the vapour that comes from the petrol that burns and causes the fire when it makes contact with static charges. 6-In twenty-nine of the cases analysed, the people re-entered their vehicles and later touched the pistols during the petrol fuelling process. This happened in cars of different varieties of makes and models. 7-Seventeen ...








In the process of electrolysis, water is broken down into exactly 2 volumes of hydrogen and one volume of oxygen (2:1). If this mixture of gases is ignited, there will be complete and ideal combustion. Of course the ratio of 2 H2 to 1 O2 is ideal for the total reaction to water. However many mixtures of hydrogen and oxygen will combust and yield is based on the concentration of the limiting reactant 2 H2 + O2 = 2H2O4 The ratio between H2 and O2 is 2 : 1

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