Hazardous flammable gases with dust particle in Division 1 and Division 2 of gases
Heavy Mine machine like TBM ( Tunnel Boring Machine length of 200m)
Excavating machinery
LPDT trucks movement
Multiple tunnel in short length creating non line of singh for communications as well as risk of accidents
Heat, Dampness and muddy terrain
Landslide
Collapse of the ongoing or adjacent mine of due to creation of vertical stopes where veins of precious metals are extracted.
Shortage of oxygen below ground
UPS Power used without ground
Required Equipment’s and Solutions
UPS SYSTEM AND CABLING IN THE TUNNEL :
UPS & Electrical Cables: Hitachi Hi-Rel’s 3 Phase, 440VAC to 110 VAC UPS are installed inside the
tunnel at four levels. Vendor connected UPS to MULITPLE Substations using supplied Electrical
Cables.
