SupervisorBriefing

There was a LV Cable Strike o/s of 5 Eastcote Rd, Pinner on Friday 10/10/14 at approx. 14:56.

The original Excavation was excavated by another team.

The Lanes team on site required the excavation the be extended to allow them room to insert a lining into a storm drain.

A second team was sent to carry out this extra works.

The team discovered a 150mm Gully pipe running into the Storm drain with concrete around it.

• In the process of removing the concrete from around the Gully Pipe, with an FL22, they struck the LV cable below.

LV Cable

What Went Wrong

• The Team did not carryout a site survey using the CAT4 & Genny because the LV cable had been “Marked Up” by the previous team who excavated the trench.

• The Team did not use the use the CAT4 to trace out below the Cable TV Ducts.

• The Team did not Hand dig to Locate the LV Cable before trying to remove the concrete.

Lessons Learn’t• Always use the CAT4 & Genny to survey the site when

taking over a Job, started by others• Never rely on other peoples Marking Up.• When excavating Always Scan below Exposed Cables/Plant.• Before knocking out concrete in the ground, Always hand

dig 500mm around the concrete to ensure that there are no cables/plant in the immediate• Supervisors are to ensure there is a suitable and sufficient

handover and exchange of information on site where the gangs change