Thursday 19 May 2016

PPE Requirements for Working on or Near Energized Electrical Circuits

PPE For Working on or Near Energized Electrical Circuits

PPE Requirements for Working on or Near Energized Electrical Circuits  
Note: 
  1. Electrical equipment and circuit wiring are considered energized unless placed in an electrically safe work condition such as locked, tagged, tried, tested and grounded.
  2. Standard PPE (i.e. Hard Hat, FRC, Safety Glasses and Safety Shoes) is required for all electrical work.
  3. PPE requirement (i.e. UV face shield) is based on the assumption that work is performed within the arc-flash boundary.
  4. Voltage rated gloves with leather protectors are required for all energized work / voltage testing.
Equipment Type
Voltage Rating
Arc-Flash Boundary
Supplemental PPE Required
  • Distribution Panel Boards, LV Junction Boxes, LV Control Compartments for 10KV SWG & 6KV MCC, UPS Distribution, Lighting Panels, ECS, Instrumentation Cabinets, Field Termination Boxes, Essential Generator Control Panel, HVAC Control Panels, Brush / GE Generator Control Panel, Turbine Control Panel
240VAC Single Phase
0.15 Meter
None
  • Thermon Heat Trace Panel,  Power & Lighting Distribution Panels, Battery Charger, Battery Banks
240VAC Single Phase with 400VAC 3-Phase Main CB,
110DC
2 Meters
11 Cal/cm2 PPE +
10 Cal/cmUV Face Shield
  • LV MCC ( Power and Control Termination Compartment),  UPS Main Feeder Compartment
240VAC Control & 400VAC Power
2 Meters
11 Cal/cm2 PPE +
10 Cal/cm2 UV Face Shield
  • LV MCC (Power Circuit Breaker & Starter Racking)
400VAC
2 Meters
11 Cal/cm2 PPE +
10 Cal/cm2 UV Face Shield
  • 6KV Breaker & Fused Contactors (Breaker Compartment Door Open)
6.3KV
3 Meters
11 Cal/cm2 PPE +
10 Cal/cm2 UV Face Shield
  • 10KV SWG & Vacuum Circuit Breaker (Breaker Compartment Door Open)
10.5KV
18 Meters
31 Cal/cm2 Flash Suit & Hood
  • 10KWG, 6KV, 400MCC, 400VAC Distribution Board External Switching Operations
10KV, 6KV, 400VAC
N/A (internal flash contained)
None

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