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A Confined Space is an area with limited means of entry and exit and that may also have poor ventilation. It may be oxygen deficient (which is defined as an area with oxygen levels below 19.5 per cent of the atmosphere).
There may be a hazardous accumulation of gas, vapour, dust or fumes due to the location, contents, or work activity that takes place.
Confined spaces may include tanks, silos, product bins, excavations, or areas under conveyors. It may also include other fixed plant and equipment, or any area which is not designed as a normal work area. These areas are appropriately signed.
No person shall enter a confined space unless they have been trained and deemed competent in confined space entry and there is rescue equipment provided and a confined space sentry in place. Confined space sentries are personnel trained in confined spaces and rescue equipment and procedures. A confined space entry permit shall be completed before any work commences.
No person shall enter a confined space until a formal risk assessment has been conducted to determine whether there is any hazard from:
• Lack of oxygen.
• Engulfment from a free flowing solid or liquid.
• Toxic contaminants.
• Flammable or combustible contaminants.
• Extreme temperature. or
• The work to be performed.