E4 StHLM Bypass  & West link - Operator Certification

In order to secure high quality and safe tunnels Trafikverket (The Swedish Transport Administration) demands that operators working with sprayed concrete, injection and bolting should be certified. Edvirt is accredited by Trafikverket to deliver training and certification courses for sprayed concrete and injection.


Sprayed concrete


Förbifart, Rendering- Bergförstärkning.jpeg


Förbifart, Rendering- Injektering.jpeg


Illustrator: Tomas Öhrling, 2015
Source: www.trafikverket.se