Safety Flash
Near miss: High voltage arc inside tether termination manifold
Near miss: High voltage arc inside tether termination manifold
- IMCA
- Safety Flash
- IMCA SF 13/25
- Electrical SafetyInspection and MaintenanceMachinery and Equipment
- Arc flashElectrical safety
- Electrical workInspection and maintenanceROV operations
- Hand toolsRemotely operated vehicle
- Functional testingEnergy and process isolationOperating and work procedures
Summary
A dislodged HPU conductor caused arcing inside an ROV tether termination manifold. Subsequent checks identified reduced insulation resistance and gas, whose origin was unconfirmed without testing. The flash examines unapproved termination lugs and records re-termination, system testing and recommendations to assess crimping tools and review procedures and gas-venting precautions.
Classifications: Arc flash; arc fault; arc-flash.
Classifications: Electrical safety; electrical hazards.
Classifications: Electrical work; electrical maintenance.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: ROV operations; remotely operated vehicle operations.
Classifications: Hand tools; hand-held tools; handheld tools.
Classifications: Remotely operated vehicle; ROV; underwater robot.
Classifications: Functional testing; function test.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Operating and work procedures.
Summary
A high voltage arc occurred inside a ROV tether termination manifold.
IMCA SF 13/25. Themes: electrical safety, inspection and maintenance, machinery and equipment.