Provision of aerosol-based fire suppression system for Electrical, CNS and AS equipment at Cooch Behar Airport.

Substation SITC of Aerosol based Fire Suppression System consisting of Aerosol generator having aerosol mass of 30gm shall be thermally actuated by means of aluminium alloy thermal sensor complying to UL 33 that can be mounted over the generator itself. The housing shall be constructed of stainless steel shell. Housing shall be sealed with a non permeable membrane. Units shall have passed salt spray corrosion testing per BIS / NABL / EN / UL Standard 2127 as part of their listing. Aerosol generated shall be potassium based. Agent shall have no ozone depletion potential and no global warming potential. Agent shall be listed by the US EPA under the SNAP program. Fixed Condensed Aerosol Systems per NFPA 2010. UL approved design density of the aerosol should be less than 100g/cu.mtr for Class A, B & C fires as per NFPA. The Aerosol generator should have self life of 15 years. Aerosol generator shall be supplied with Stainless steel Bracket & Thermal Sensor.

SITC of Aerosol based Fire Suppression System consisting of Aerosol generator having aerosol mass of 60gm shall be thermally actuated by means of aluminium alloy thermal sensor complying to UL 33 that can be mounted over the generator itself. The housing shall be constructed of stainless steel shell. Housing shall be sealed with a non permeable membrane. Units shall have passed salt spray corrosion testing per BIS / NABL / EN / UL Standard 2127 as part of their listing. Aerosol generated shall be potassium based. Agent shall have no ozone depletion potential and no global warming potential. Agent shall be listed by the US EPA under the SNAP program. Fixed Condensed Aerosol Systems per NFPA 2010. UL approved design density of the aerosol should be less than 100g/cu.mtr for Class A, B & C fires as per NFPA. The Aerosol generator should have self life of 15 years. Aerosol generator shall be supplied with Stainless steel Bracket & Thermal Sensor.

SITC of Aerosol based Fire Suppression System consisting of Aerosol generator having aerosol mass of 100gm shall be thermally actuated by means of aluminium alloy thermal sensor complying to UL 33 that can be mounted over the generator itself. The housing shall be constructed of stainless steel shell. Housing shall be sealed with a non permeable membrane. Units shall have passed salt spray corrosion testing per BIS / NABL / EN / UL Standard 2127 as part of their listing. Aerosol generated shall be potassium based. Agent shall have no ozone depletion potential and no global warming potential. Agent shall be listed by the US EPA under the SNAP program. Fixed Condensed Aerosol Systems per NFPA 2010. UL approved design density of the aerosol should be less than 100g/cu.mtr for Class A, B & C fires as per NFPA. The Aerosol generator should have self life of 15 years. Aerosol generator shall be supplied with Stainless steel Bracket & Thermal Sensor.

SITC of 3 Phase / Type1+2 (KEMA Certified) Lightning current & Surge Protection Device at mains LT panel (3 phase, 415 V) for (L-N) Single- pole combined lightning current and surge arrester, Type 1 SPD. The device shall be non-exhausting metal encapsulated, spark gap based technology and tested as per latest and valid IEC 61643-11:2011 or EN 61643-11:2012 standards. It shall be capable to discharge Lightning current (10/350µs) of 25kA (L-N) and 100kA(N-E) and voltage protection level of device shall be ≤ 1.5 KV,. The device shall have inbuilt fuse for L N. Follow current extinguishing capability [L- N]/[N-PE] : 100kArms / 100Arms. The device shall have built in fuse and operation of SPD shall be independent of Line current for L N SPD. The short circuit with stand capability of the device shall be 100 KArms for L-N SPD. The device shall have mechanical indication for both the states (green for ‘healthy’ and red for failure) on L-N and N-PE. The device shall be certified by KEMA /VDE or NABL lab as per IEC 61643- 11:2011 or or EN 61643-11:2012 for testing of all parameter at 10/350 µs and 8/20 µs. with transparent enclosure IP65

CNS Department SITC of Aerosol Generator having aerosol mass of 500gm shall be electrically actuated by means of Fire Alarm cum Release Panel. The housing shall be constructed of stainless steel shell.Housing shall be sealed with a non permeable membrane. Units shall have passed salt spray corrosion testing per UL Standard 2127 as part of their listing. Aerosol generated shall be potassium based. Agent shall have no ozone depletion potential and no global warming potential. Agent shall be listed by the US EPA under the SNAP program. Aerosol generators shall be listed by Underwriter’s Laboratories (UL) to UL Subject 2775 covering Fixed Condensed Aerosol Systems per NFPA 2010. UL approved design density of the aerosol should be less than 100g/cu.mtr for Class A, B & C fires as per NFPA. The Aerosol generator should have self life of 15 years. Aerosol generator shall be supplied with Stainless steel Bracket & Gland.

SITC of Aerosol based Fire Suppression System consisting of Aerosol generator having aerosol mass of 1000gm shall be thermally actuated by means of aluminium alloy thermal sensor complying to UL 33 that can be mounted over the generator itself. The housing shall be constructed of stainless steel shell. Housing shall be sealed with a non permeable membrane. Units shall have passed salt spray corrosion testing per BIS / NABL / EN / UL Standard 2127 as part of their listing. Aerosol generated shall be potassium based. Agent shall have no ozone depletion potential and no global warming potential. Agent shall be listed by the US EPA under the SNAP program. Fixed Condensed Aerosol Systems per NFPA 2010. UL approved design density of the aerosol should be less than 100g/cu.mtr for Class A, B & C fires as per NFPA. The Aerosol generator should have self life of 15 years. Aerosol generator shall be supplied with Stainless steel Bracket & Thermal Sensor.

SITC of Aerosol Generator having aerosol mass of 1500gm shall be electrically actuated by means of Fire Alarm cum Release Panel. The housing shall be constructed of stainless steel shell.Housing shall be sealed with a non permeable membrane. Units shall have passed salt spray corrosion testing per UL Standard 2127 as part of their listing. Aerosol generated shall be potassium based. Agent shall have no ozone depletion potential and no global warming potential. Agent shall be listed by the US EPA under the SNAP program. Aerosol generators shall be listed by Underwriter’s Laboratories (UL) to UL Subject 2775 covering Fixed Condensed Aerosol Systems per NFPA 2010. UL approved design density of the aerosol should be less than 100g/cu.mtr for Class A, B & C fires as per NFPA. The Aerosol generator should have self life of 15 years. Aerosol generator shall be supplied with Stainless steel Bracket & Gland.

SITC of Aerosol Generator having aerosol mass of 2500gm shall be electrically actuated by means of Fire Alarm cum Release Panel. The housing shall be constructed of stainless steel shell.Housing shall be sealed with a non permeable membrane. Units shall have passed salt spray corrosion testing per UL Standard 2127 as part of their listing. Aerosol generated shall be potassium based. Agent shall have no ozone depletion potential and no global warming potential. Agent shall be listed by the US EPA under the SNAP program. Aerosol generators shall be listed by Underwriter’s Laboratories (UL) to UL Subject 2775 covering Fixed Condensed Aerosol Systems per NFPA 2010. UL approved design density of the aerosol should be less than 100g/cu.mtr for Class A, B & C fires as per NFPA. The Aerosol generator should have self life of 15 years. Aerosol generator shall be supplied with Stainless steel Bracket & Gland.

Supply, Installation, testing & Commissioning Of Conventional type UL Listed Optical smoke detectors complete with base, locking screw etc.

Supply, Installation, Testing & Commissioning Of Conventional type UL Listed Heat combination detectors (ROR and Fixed temperature) complete with base, locking screw etc.

Supply, installation, testing & commissioning of UL Listed Manual Release Switch (Green) with double action having body of metal alongwith backbox and necessary interconnection with the gas release panel.

Supply, installation, testing & commissioning of UL Listed Manual Abort Switch (Yellow) with double action having body of metal alongwith backbox and necessary interconnection with the gas release panel.

Supply, installation, testing & commissioning of UL Listed Conventional Sounder cum strobe with 24V DC, Audiable Sound 75 db @ 1 mtr range (16 V DC). It is used for Fire, Burglar & Emergency Alarm System, Low current consume @ 47 -73 mA Candela: flashing every second, 4 candela settings :15 /30 /75/110cd output and 2 different tone audiable sound conventional Electronic Hooter cum sounder along with backbox, having body of polycarbonate.

Supply and Laying of 2 core 1.5 sq. mm. FRLS armored Cable with accessories Llike juction boxes, shaddle, clamp, screws etc.

Supply, Installation, Testing and Commissioning of single phase surge protection device type 2 / class II M TT 2P 320 FM surge arrester Modular and pluggable two pole surge arrester for single-phase 230 V TT and TN systems, width: 2 modules With remote signalling contact Type 2 SPD according to EN 61643-11 Max. continuous operating voltage: 320 V a.c. Voltage protection level: <= 1.5 kV Nominal discharge current: 20 kA Short circuit strength: 25 kArms Energy coordinated according to IEC 62305-4 with arresters of the Red/Line series Fault indication. Type: VT2 M TT 2P 320 FM. Certified by CE, KEMA and UL. Surge protection devices shall be enclosed in polycarbonate enclosure of IP 65 with accessories

Supply, Installation, Testing and Commissioning of Single Phase modular type Surge Protection Device (CLASS- B,1,Stage- 1/primary) with minimum lightning impulse current (limp) of 100KA (10/350 micro seconds) neutral to earth, 50 KA (10/350 micro sec) line to neutral, limiting voltage less than 1.5 KV, to be installed in parrallel at the mains panel of power entry point including making connection of surge protection device in parallel to the busbar of the main electrical panel using 16 Sq mm single core PVC insulated flexible copper conductor cables, in IP55 grade powder coated metal enclosure with 63 Amp. service/ bypass changeover switch, on the mains power entry point at the incomers including all accessories such as suitable rating MCBs, making end terminations,fixing/mounting arrangement of SPD.

SITC of Low Impedance Digital Grounding System 240kA Single Phase three wire LIDGS 4th Generation equipment Grounding & bonding system with built in 100% Lightning and Surges, static charge, Noises, ESD, EPR and abnormal electrical characteristics eliminator which enter from power and other service lines and ensuring clear bonding potential (earth to Neutral voltage) less than 1.0V, a digital 3 Digit LCD Impulse real Date time Counter with threshold of 1KA, self health visual status indicator, built Zero leakage Current based solution. Lightning Impulse Current Discharge Capability up to 12 KA (10/350μsec) Surge Discharge Current Capability up to 40KA (8/20μsec) 7 Modes of Protection (L1-N, N PE, L1- PE) total surge handling capacity 240KA Shortcircuit extinguishing and limiting capabilities up to 25KArms without tripping of Let-through-energy of less than 01 Joule in a Pre-wired pulverulent body painted metal enclosure to be connected in parallel to the power supply circuit, Conforming solution CE NABL IEC 61643-11 - 2011.

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