Dangers from electricity

The danger of corrosion is in general greater for pipelines in industrial installations than in long-distance pipelines because in most cases cell formation occurs with steel-reinforced concrete foundations (see Section 4.3). This danger of corrosion can be overcome by local cathodic protection in areas of distinct industrial installations. The method resembles that of local cathodic protection [1]. The protected area is not limited, i.e., the pipelines are not electrically isolated from continuing and branching pipelines. 

Possible danger from electrical shock or burn improper grounding, liquid spills, short circuits, exposed wires Double-check setup with teacher. Check condition of wires and apparatus. Do not attempt to fix electrical problems. Notify your teacher immediately. 

Powder for small arms is generally glazed with graphite, by which treatment its attitude toward the loss and absorption of moisture is improved, and by which also it is made electrically conducting so that it can be blended without danger from static... 

Concern with the hazards associated with the use of flammable and toxic chemicals in the laboratory often causes the dangers from electrical equipment to be overlooked. However, many accidents are caused by the malfunctioning of electric appliances and by thoughtless handling. 

I ve been amazed at the continued popularity of this drug among my students, who seem to believe that because they are young they are also immortal and therefore immune to the danger. I blame the feelings of immortality on the fact that their frontal lobes are not fully working because they have not yet completed the process of neuronal myelination. Without myeli-nation, electrical signals from neurons fail to reach their destination. The parts of our brains that myelinate last are also the parts that evolved most recently. These parts include our frontal lobes, which contribute most to our unique personalities and allow us to anticipate the consequences of our actions. 

Oil is used frequently instead of water under high pressure to eliminate the dangers from explosions. Both these methods of evaporation are expensive in first cost and operation, and are only applicable for special cases. Electricity as source of heat is only used in laboratory apparatus for commercial purposes it may be used where fuel is not obtainable, and electricity can be produced by cheap waterpower. 

Possible danger from electrical shock or burn... 

The United States only receives 1 percent of its total electricity from wind. Denmark, Spain, and Germany, on the other hand, are approaching 10 percent of their electrical consumption from wind. Using more wind energy would benefit the environment because wind does not produce any pollution or hazardous waste. It is also readily available without mining or drilling, is not radioactive, and does not require the transportation of dangerous substances. 

Some sources of ignition can be discounted immediately this example, for instance, does not involve pyrophoric materials. As there are no vent lines leading to atmosphere, there is no danger from sources of ignition outside the plant. In practice, the presence of naked flames can also usually be discounted as they will normally be excluded from areas where flammable materials are handled. All electrical equipment should be checked to ensure that it is suitable for the area classification in which it is sited. 

If you re an industrial worker facing danger from flash fire, electric arc, molten metal splash, or welding, TenCate has a fabric made just for you. 

Electricity and electrical equipment create or contribute to several hazards. The most common ones are electric shock, heat, fire, and explosion. Electricity may produce other hazards indirectly. For example, when electricity energizes equipment, mechanical hazards may result. Some electrically powered devices produce harmful levels of X rays, micro-waves, or laser light. Certain equipment may create dangers from magnetic fields. Haddon s energy theory (see Chapter 9) helps people analyze electrical hazards and identify controls. 

Another hazard of confined spaces is a pressurized atmosphere. When someone opens a pressurized container, the door may fly open causing injury. Confined spaces may contain moving parts that can cause injury. The moving parts may need to follow lockout and tagout procedures and other procedures that remove or restrain stored energy. There may also be hazards from electrical equipment or dangers from ducts, pipes, or drains that connect to sources of hazardous materials. 

When work is to be carried out on a part of a circuit or piece of electrical apparatus, certain precautions need to be taken to protect the worker concerned from electrical danger. The electricity supply should first of all be switched out and locked off to ensure that the circuit or apparatus being worked upon is effectively electrically isolated and cannot become live. 

Work near underground electricity cables and overhead electric lines has caused many serious and fatal accidents over the years. The precautions to be taken are admirably dealt with in two HSE Guidance Notes on Avoidance of Danger from Overhead Electric Lines and Avoidance of Danger from Buried Electricity Cables . 

Health and Safety Executive, Avoidance of Danger from Overhead Electricity Lines, Guidance Note GS 6, HMSO, London (1977)... 

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