The Safety Engineering work along with essential Mechanical and

Supply, installation. testing and commissioning of bi-directional Jet Fans (30 kW each) with impeller diameter of 800 mm, static thrust of 850 N and motor protection class IP 55 as per the specifications. Fan housing made of Mild Steel + galvanized and powder coated RAL 7030 (100µm). 2 hours at 250 DegreeC (as per NFPA). with Silencers for Jet Fans made of sound absorption material, Steel, strip galv. & riveted in accordance with ISO-1462 and powder coated RAL 7030 (100µm) with 1.0mm casing thickness, Mineral wool: Non flammable class A2 DIN 4102 T1, including items mentioned below: The Jet Fan casing include following sensors: Fan displacement sensor / Fan disconnection in case of suspension failure. Bearing temperature sensor, Fan Vibration monitoring sensor Supply, installation, testing and commissioning of Heavy Duty support anchors made of Inox steel approved for zones subject to tensile forces to mount the jet fans on ceiling parallel to the longitudinal axis of the tunnel. Vibration Isolation springs have to be provided with a static deflection as per the ASHRAE & manufacturer standards as per the specifications. 16Nos. of Anchor fastener considered for installation of one Jet Fan. Supply, installation, testing and commissioning of safety chains made of stainless steel, arranged from the wall independent of fixed frames to protect the jet fans from falling as per the specifications. Note: The complete supporting structure shall be fire proof with epoxy coating to protect the steel from extremely high temperatures. All other works to make mechanical works for Ventilation fans complete including support, safety chains, vibration isolator, terminal box, local Disconnect switch, etc. in all respect

COMBINED NO ,NO2, CO AND VISIBILITY MONITOR Combined CO, NO, NO2 & opacity sensor comprising of: - CO sensors, measuring range 0-300 ppm and accuracy of ±2 ppm (or 2% of span) - NO2 sensors, measuring range 0-10 ppm and accuracy of ±0.1 ppm. - NO/NOx sensors, measuring range 0-30 ppm and accuracy of ±2 ppm (or 2% of span) - Opacity sensors, measuring range 0-0.015 m¯¹ and accuracy of ±0.002 m¯¹. with ingress protection IP-67 at every 500 m.

ANEMOMETER Anemometers, measuring range -20 to +20 m/s, resolution 0.01m/s and accuracy of ±2 m/s including IP-67, Enclosure materials - 316 SS Flame retardent UL rated polycarbonate, communication through ModBus RTU RS485 with operating temperature -20 to + 70°C, etc.

Motor Control Centre- Inside Tunnel (Jet Fan and Axial Fan) INCOMING 2 nos 1600 Amps 50 kA 415 volt 4-P EDO ACB each complete with: 3 nos Cast resin current transformers of 1600/5 ratio Class 1.0, 15 VA burden for metering 3 nos cast resin current transformers of 1600/5 ratio Class 1.0 15 VA Burden for APFCR relay 1 no voltmeter of 96 mm sq scaled 0- 500 volts with 3 way & OFF selector switch 1 no Energy Monitoring Unit with real time, voltage in all phases, current in all phases, total active energy ( KWH/MWH), total maximum demand (KVA/MVA & KW/MW), Frequency and Power Factor with communication module. 1 power factor meter 3 nos Cast resin current transformers of 1600/5 ratio Class 1.0 for metering 1 nos Cast resin current transformers of 1600/5 ratio Class 1.0 for APFCR relay 12 step automatic power factor correction relay to sense and monitor the system power factor and provide impulses for operation of 12 capacitor circuits . Red/Green ON/OFF indicating lamps 1 set of three White phase indicating lamps 1- Amber indicating lamp for trip circuit healthy 1- clear indicating lamp for auto trip 1 - blue indicating lamp for spring charged Inbuilt Microprocessor based release with Type "D" protection

Capacitor Panel (300kVAr) With all accessories

Motor Control Centre- Tunnel-1 (Jet Fans) INCOMING 1 nos 630 Amps 35 kA 415 volt 4-P EDO ACB each complete with: 3 nos Cast resin current transformers of 630/5 ratio Class 1.0, 15 VA burden for metering, 1 no voltmeter of 96 mm sq scaled 0- 500 volts with 3 way & OFF selector switch, 1 no Energy Monitoring Unit with real time, voltage in all phases, current in all phases, total active energy ( KWH/MWH), total maximum demand (KVA/MVA & KW/MW), Frequency and Power Factor with communication module for SCADA connectivity, Red/Green ON/OFF indicating lamps, 1 set of three White phase indicating lamps , 1- Amber indicating lamp for trip circuit healthy 1- clear indicating lamp for auto trip, 1 - blue indicating lamp for spring charged, Inbuilt Microprocessor based release with Type "D" protection, 240 V AC Motor wound spring closing mechanism 1-24 V DC Shunt trip coil, 6 NO/NC contacts for remote ON/OFF/Trip status at SCADA, Terminals to receive XLPE cables, Surge protection device of Type 1+2 - Imax 100kA,3P+N BUSBAR Electrolytic high conductivity Aluminium three phase and neutral busbars rated at 630 amps having a maximum current density of 1 amp per sq mm suitable to with stand symmetrical fault level of 35 kA at 415 volts. The neutral busbar is to be of 50% capacity. 6 nos 100 Amps 415 volt 35 kA TPN MCCB with type 'A' release each with VFD, suitable for 433V, 3 phase, 30kW, 2 pole motor as per specification & details.

Motor Control Centre- Tunnel-2 (Jet Fans) INCOMING 1 nos 630 Amps 35 kA 415 volt 4-P EDO ACB each complete with: 3 nos Cast resin current transformers of 630/5 ratio Class 1.0, 15 VA burden for metering 1 no voltmeter of 96 mm sq scaled 0- 500 volts with 3 way & OFF selector switch 1 no Energy Monitoring Unit with real time, voltage in all phases, current in all phases, total active energy ( KWH/MWH), total maximum demand (KVA/MVA & KW/MW), Frequency and Power Factor with communication module for SCADA connectivity Red/Green ON/OFF indicating lamps 1 set of three White phase indicating lamps 1- Amber indicating lamp for trip circuit healthy 1- clear indicating lamp for auto trip 1 - blue indicating lamp for spring charged Inbuilt Microprocessor based release with Type "D" protection 240 V AC Motor wound spring closing mechanism 1-24 V DC Shunt trip coil 6 NO/NC contacts for remote ON/OFF/Trip status at SCADA Terminals to receive XLPE cables Surge protection device of Type 1+2 - Imax 100kA,3P+N BUSBAR

Maintainance Panel INCOMING 1 no 63 Amps 415 volt 25 kA 4P MCCB with "Type "B" release each complete with, 3 nos Cast resin current transformers of 63/5 ratio Class 1.0, 15 VA burden for metering, 1 no voltmeter of 96 mm sq scaled 0- 500 volts with 3 way & OFF selector switch, 1 no Energy Monitoring Unit with real time total active energy ( KWH/MWH), total maximum demand (KVA/MVA & KW/MW)with communication module for SCADA connectivity Red/Green ON/OFF indicating lamps, 1 set of three White phase indicating lamps , Square flush mounting 0-100 amp scaled ammeter with 3 way and OFF selector switch, Terminals to receive cables BUSBAR Electrolytic high conductivity aluminium three phase and neutral busbars rated at 100 amps having a maximum current density of 1 amp per sq mm suitable to with stand symmetrical fault level of 25 kA at 415 volts. The neutral busbar is to be of 100% capacity. OUTGOING 20 nos 32 Amps 415 volt 15 kA TPN MCB The Switchboard shall be complete with all interconnections, risers, internal wiring, labels etc complete as required

(Maintainance Outlets) 16 amps TPN 10 kA and 6 amps SPN 10 kA thermal magnetic protective releases MCB out goings Supply, installation, testing and commissioning of Maintenance Power socket, IP 65, as per the specifications. 16 Amp Three Phase

1.1 kV grade stranded Al conductor, XLPE insulated, extruded PVC inner and FRLS outer sheathed, galvanised steel round or strip armoured cables 3.5 core 400 sq.mm