What Is A Confined Space?
The places where people usually work are known as workplaces and sometimes these workplaces are considered as confined spaces if they are not necessarily designed and implemented for people to enter in huge numbers as workers to work and perform specific jobs. These confined spaces have a very limited number of entry and exits for people and are not designed for people to spend a long tie there or even work continuously for days. These are hazardous to humans because of certain reasons that will be explained later in the article. But for now, confined spaces include tanks, vessels, pipelines, vaults, tunnels and many more. Some of these confined spaces need a permit for humans to enter because it is that dangerous for human body, the atmosphere there is not what a human can live or even breathe in for quite some time. Visit this link https://www.trainme.com.au/product/riiwhs202-enter-work-confined-spaces/ if you need confined space course Sydney.
The question arises as to if these confined spaces of Train Me are that dangerous for human, why do humans go there after all? So the answer is that these confined spaces are designed for storing a product, or transport commodities and other substances. And therefore an occasional worker enters for maintenance, repair and cleanup of the space, but even those visits are dangerous because of the chemical and other physical hazards.
Talking about hazardous atmosphere, let us highlight the types of these hazards present at various confined spaces. Starting with an oxygen deficient atmosphere. An oxygen deficient atmosphere is where there is even less than 19.5% oxygen in the air, and that is a percentage that humans cannot survive without a self-contained breathing apparatus. This is usual in confined spaces that have wielding, cutting, and brazing carried out.
Second type is the toxic atmosphere which is that scraping off stuff from the walls can release toxic gases during the cleaning and that is not a healthy thing to breathe by a normal human being. Examples of such confined spaces can be painting, cutting, scraping and many more.
A security measure that is necessary to take while working in a confined space is that you can never trust your senses to determine if the air is safe for you to breathe in. that is because some of these toxic gasses and smells maybe odorless and harmful to you and you would not know.
A medium of ventilation like a blower or a fan may be very important at a confined space so that harmful gasses and vapors can be removed away. A usual method of ventilation is having a large hose, a side attached to a san and other to an opening. This would blowout most of the harmful gasses as soon as the blower is turned on by the worker that are already working there. This is the most important safety measure taken by workers who work at a confined space.