What is vacuum excavation?
Vacuum excavation is an intrinsically safe method of avoiding dangerous and expensive utility strikes. In line with HSG47 industry best practice, the method eliminates the risk from buried services, whether it be checking for known services or for excavation at borehole positions prior to drilling. Depending on the ground conditions, the excavation methods are either by hydro or pneumatic techniques.
The hydro vacuum technique uses a high pressure water jet delivered by a cyclonic “nozzle”. It can be used in all soil types including cohesive soils. The slurry waste is removed into the on-board storage tank by suction methods and then is safely disposed of.
The pneumatic method injects air into the ground, loosening the materials, which are then removed by suction methods. The technique produces dry spoil which can easily be put back into the ground. This method suits non-cohesive soils.
Our fully trained and competent crews are highly experienced in working in many sensitive sectors including National Grid, Highways, Rail and Petrol Forecourts. The crews hold the appropriate competence training for working in these sectors including: CSCS, SPA, National Grid BESC, National Gris Competent Person and NRSWA Streetworks Qualifications.
- HSG47 best practise
- Exploratory trenching for services
- Borehole service clearance
- Confirming known service location
- Petrol Forecourts, Substations
- Pumping stations
- NRSWA Streetworks
- National Grid BESC
- SPA forecourt safety passport