Vacuum digging has many safety benefits over traditional digging practices when it comes to working with underground cables.
When a construction site has underground cables buried underneath that need to be exposed for maintenance or upgrades, vacuum digging is fast becoming the preferred option for safety. The no-dig approach is proven to be the smartest, safest method of uncovering services with low risk to workers or the site. The soft excavation technique allows for the services to be identified and managed optimally without the need to make any sort of contact with them. The lack of manual handling reduces the risk of injury, better health to the operatives, which is paramount above all.
Why opt for vacuum digging?
- Vacuum excavation provides a safe option when underground cables need to be exposed.
- Often hand digging carries a great deal of risk – personal injuries, in some cases fatal, can be incurred if cables are struck. There are up to 60,000 service strikes every year (Clyde & Co), with an average costing of £7,000 per strike (USAG).
- Mechanical equipment, whilst safer for the operator, can damage buried assets resulting in costly repairs not factored into the project budget or timescale.
- Increases in cost if other methods result in complications, means that vacuum excavation is not only safe and smart but also highly economical.
- Pier UK operatives are competent and qualified workers who use equipment and machinery with great emphasis on both efficiency and safety.
- The area of excavation on certain sites is reduced by precision excavation, this leaves less site spoil that would need to be recycled which is environmentally beneficial.
- Excavated spoil is stored in the internal skips built into the vacuum excavators leaving the site and surrounded area free of any hazards for operatives or the public and also results in easier dumping and filling.
- Vacuum digging uses the suction power of a vacuum excavator to gently pull away ground, carefully exposing underground cables without causing damage with spot-on precision. Supported by an air lance, the equipment can be used to excavate around all buried assets, safely exposing them for utility contractors to access lines for repairs and maintenance.
How does a vacuum excavator work?
The vacuum excavator’s remote control boom uses suction power and air to pull away ground material – lifting it up and pulling it into the machine. The excavated material is drawn through the machine where it is stored to offload later on site. Air is ‘cleaned’ inside the machine by passing through 42 air filters before it is released back out of the machine and into the air outside. The vacuum excavator can store up to 8m³ of excavated material, often meaning work can be completed without having to stop and offload.