Cable Strikes | 10kV Medium Voltage (MV) Cable Struck By An Excavator
Published 18 May 2021
Utility Strike Avoidance Group
USAG have published a range of documents to assist industry understanding of the root cause and contributory factors behind specific incidents. The aim is to improve industry standards and reduce the number of cable strikes.
Cable damage is often caused by excavating machines – hand held tools such as pneumatic drills, crowbars, pins, picks and forks also expose workers to potential sources of danger when digging around underground cables.
Incident Type: 10kV Electrical Strike
Project/Location: McDonalds Restaurant, Mullingar, Co. Westmeath
Client: Gas Networks Ireland
Incident Date: 24-03-2019
During planned weekend work a 10kV medium voltage (MV) cable was struck by an excavator. A subcontractor/DLO blended team were tasked with extending the existing gas main at a depth of approximately 1.7m.
Temporary works designs were authorised and planned for the job. Service plans were provided in the job pack and indicated the presence of a 10kV/20kV MV cable. Cable was traced, located and marked. Despite knowing the presence of existing services, the team allowed the excavator to work within 500mm of the various utilities.
The cable was struck by a combination of the bucket of the excavator and material shift towards the ESB cable at a depth of approximately 400mm.
|Follow Up Action Required||
|Action Holders||Emmet O’Brien, Roisin Kelly & Neil Doherty – BBCLG, ALL SBU Heads of Contract & Operational Management, ALL SBU Heads of Contract & Operational Management|
Protecting Cables Against Strikes & Restoring Power Post-Strike
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