Confined Spaces Safe Working Methods Septic Tank Sump Work

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#confinedspace #safetyfirst #construction • What are the main confined space hazards? • If confined space work cannot be avoided, you need to take extreme care. If you run into trouble within a confined space, the consequences can be fatal. Here are our top 7 confined space hazards. • 1. Lack of Oxygen • Oxygen can be removed from the atmosphere within a confined space through naturally occurring reactions. A reaction between certain soils and the oxygen, or groundwater and chalk or limestone can produce carbon dioxide which displaces oxygen. Rust forming inside tanks can also create a lack of oxygen. • In 2014 three crew members died at Goole Docks after entering a cargo hold. • The investigation found that the oxygen levels within the compartment had been depleted, probably by the timber cargo, with levels of 5% - 6% recorded at the compartment deck. • Marine Accident Investigation Branch Safety warning regarding entry to confined spaces • 2. Gases, Fumes and Vapours • Poisonous gases and fumes can build up within confined spaces, especially where there is a lack of ventilation. • Deadly gases can leak into the confined space, for example through a burst gas pipe or from contaminated land. Or they may be created from the work being carried out, such as welding, adhesives or paint fumes. • Without extraction or ventilation, these gases and fumes can create a toxic atmosphere within the confined space. • 3. Flooding • Liquids can quickly flood the confined space, particularly in drainage or sewer work, trapping and potentially drowning those within. • And it's not just liquids you should worry about. Solids can also flood confined spaces, for example in trench collapses, with those within the trench at the risk of being trapped or buried. • Confined spaces can be small, so flooding can occur in a matter of seconds, leaving no time to escape. • 4. Dust • Dust can build up within confined spaces, either naturally occurring or through the activity being carried out, e.g. drilling or grinding. • Excessive dust inhalation causes respiratory problems, and hazardous dust can be fatal. • Dust build-up can also increase fire/explosion risk, especially where there is a lack of ventilation. • 5. Fire and Explosions • Flammable vapours, liquids, gases and dust within the confined space can all increase the risk of fire and explosions. The risk is increased further where any hot works or tools which can spark are used within the confined space. • Remember how lack of oxygen was number one on our list? Well, too much oxygen is also bad. Excessive oxygen levels increase the risk of fire and explosions. • 6. Temperature • Strenuous construction work, hot works or naturally occurring hot conditions can lead to a dangerous increase in body temperature. This can quickly become a problem within confined spaces that are hard to escape from at the best of times. • Heat can rapidly rise due to the enclosed nature of a confined space. This can lead to heatstroke, exhaustion and collapse. • 7. Access Restrictions • Confined spaces are also dangerous because they can be difficult to access. This makes escape difficult and also hinders any emergency rescue. • Once you are inside a confined space, there may not be a quick or easy way out. So it is important to know that work can be carried out safely before you enter, and emergency arrangements are in place. • inside a confined space • Controlling Confined Space Hazards • If you can’t avoid work within the confined space, you need to carry out a confined spaces risk assessment to identify the hazards decide what precautions are needed to control the risk. • Every year, people die or get seriously injured during confined space work. Unfortunately, many deaths in confined spaces are from people attempting to rescue others and being exposed to the same hazards.

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