Confined Spaces: "Any place, including any chamber, tank, vat, silo, pit, pipe, sewer, flue, well or any similar space in which, by virtue of its nature, there is a foreseeable risk of any specified occurrence"
It the vast majority of situations where a worker must enter a confined space he or she should be wearing a full body harness and be attached to a rope. This arrangement serves two purposes; 1) you are able to locate the the worker 2) you will likely be able to pull the worker out from the work site encase of emergency. By nature confined spaces are often dark, lighting should be considered carefully as any explosive environment will require Atex lighting.
To be able to position the worker additional equipment is required. This may include hauling systems incorporating PPE Pulleys combined with lowering/raising mechanisms to form a bespoke system or alternatively a pre-rigged system may be used. When entering silos or manholes a confined space access tripod can be an invaluable piece of equipment.
When purchasing harnesses for confined space access it is worth considering the angle at which the worker will be suspended upon entry/exit. Most full body harnesses have a rear dorsal attachment, this attachment is located high on the users back. Due to the position of this attachment the worker will be prone to hanging at an angle. A harness designed specifically to lift the user vertically will be required, the Petzl Newton fitted with the Petzl Lift Spacer provides a adaptable alternative.
Confined spaces - specified occurrence
A confined space can be found in virtually any working situation. At present we are unable to offer advise specific to confined space working, we are pursuing further knowledge in this area and hope to offer sound advise with a more diverse product range in the near future. We are however able to offer advise regarding access and egress methods. We provide Atex lighting but only with the details of its relevant certification, it is up to the user to check that its certification is suitable for their needs.
Examples of pulley systems by Petzl typically used during confined space access
Wire ladders often provide excellent additional means of access to confined spaces reducing the need for complex pulley systems for general access. Users can be protected by a belay or 3 way fall arrest block while ascending or descending. To read more about our range of wire ladders please view our Wire Ladders page.