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Confined Spaces – Learning to Deal with Risks Involved

Confined spaces are prone to some the most dangerous threats resulting in worker lives being lost. In fact OSHA’s statistics determine over 600 people losing their lives in hazards related to confined spaces. These are not just alarming but disturbing numbers!

Another study done by a California company suggests that a lot of the affected victims are actually rescuers who are overcome by the emotion to save their colleagues but instead fall victim themselves. This is a case of serious concern to corporations all over the world.

Why is Hydrogen Sulfide listed in the Major Accident Hazard (MAH) category for Hydro Carbon operations?

H2S is identified as Major Accident Hazard (MAH) in Hydro carbon operations. Each day, many workers in the oil and Gas, petrochemical, construction, waste water, paper-pulp and other industries are exposed to hydrogen sulfide gas. Hydrogen Sulfide is a colorless, transparent gas with a characteristic of a rotten-egg odor at low concentrations and not detectable by odor at high concentrations. Hydrogen sulfide is the chemical compound with the formula H2S (chemical symbol).

It is highly flammable and toxic, even at low concentrations. HMIS (Hazardous Materials Identification System) and NFPA (National Fire Protection Association) gave H2S a flammability rating of 4, which is the highest rating. It is heavier than air and may travel along the ground. It can build up in low-lying areas, and in confined spaces (including enclosed, poorly ventilated areas). After a while at low or more quickly at high concentrations, you can no longer smell it to warn you it’s there. It can quickly, almost immediately, overcome unprepared workers, including rescue workers.

H2S is very poisonous, corrosive.

Earth Leakage Protection by ELCB – Can Save Life

1. Introduction — to earth leakage and the need to protect against it.

In the context of electricity, for its proper conservation, right distribution to the desired points of utility and also to safeguard the precious life and valuable property from damage, it is very important to insulate the point of voltage and the passage of electric current through the conductor. Every student and user of electricity must clearly understand and appreciate the importance and role of sound insulation which guides the correct passage of electricity through desired conductor. Any leakage of current, besides being a loss of electrical energy, may be a potential danger to lives of human beings and cattle flock, examples of which we find in plenty in day-to-day life. Large animals, besides human beings, loose their lives due to electrocution when a very small amount of current, in the order of milli-Amperes, flows through their bodies on account of leakage of current from the potential point.

Human safety is the worst victim in case of weakening of insulation because the deteriorated strength of insulation brings harmful potential close to the human body, increasing the chances of flow of intolerable extent of current. This is in brief, the perspective of electrical leakage due to deterioration in fortification of electric power with network of varieties of insulating materials and gadgets.

It must be clearly understood and always born in mind that earth leakage protection device is not the surest way of saving human life. As can be seen from the analysis of the subject electrical network, there may be many instances and situations wherein man can be subjected to harmful voltage, in spite of ELCB being in place and active in operation. Hence, the need to be realistic and away from the false notion that we are always safe with the use of ELCB.

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