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