NIT No-15 EE (SDW) II/ (21-22) Item No. 01

SITC of tube based fire suppression system at LT panels of raw & return sludge pump houses and LT panel of aeration system of 37MGD STP Okhla by carrying out following works including all the required works, materials, arrangements tools & tackles workmanship, safety arrangements & equipments as per NHRC guidelines etc. and as per site requirement, re modeling all the damages up to standard if occurred any complete in all respect satisfactorily. Clean Agent HFC 236fa DLP with Zero Ozone Depletion Potential .Container along with Valve assembly. LMESS CA HFC 236fa Direct complete as reqd. Direct Low Pressure Valve with two outlets Brass Nickel Plated, Stainless Steel connectors, 360 Degree Rotational Hand wheel valve for close / open position, Integrated in Valve main body at the top, Secured with Allen key to avoid misuse, Push In Pneumatic Fittings, Valve Inlet M30x 1.5, Valve Outlet G1/8", Dip tube Thread M16 x1.5,Pressure Gauge Thread M10x1, Seal Seat Diameter 63.6 mm 2, Operating Pressure 15 to 23 Bar, Test Pressure 28 Bar, Operating temperature-20 Degree C to + 65 Degree C, Safety Device : Burst Disc ,Approved by Kiva Inspection authority AB, Sweden, PI marked, TPED approved, used standard for type approvals ISO 17871:2015 in conjunction with EN ISO 10297:2014 EN ISO 147246:2017-12.

Sensor tube automatic fire suppression system, made by special modified Polyamide DOUBLE LAYERED (PA), Color Black, High grade HR quality, Stabilized, Inner diameter 4mm, Outer diameter 6MM, Sensor Tubing HR Black in Mtr. Sensor Tube UV Resistance with Pressurization of Tube Using Nitrogen Gas. The HS Tisnon–conductive, non-corrosive and flexible. The tube should be capable of withstanding pressure up to 20bars. Melting Point : Approx. 220 degrees Celsius when heating up with 10K/minute. Operating Pressure: 15Bar .Burst Pressure: at 20 Degree C approx. 120 Bar. Operating Temperature: Optimal temperature for long-term use is-20 to 60 degrees Celsius. Steady load to max. 80°C have been tested. The lowest operating temperature is stipulated at minus 40°C. Bursting Temperature: rapid heat increase in temperature and 15 bar approx. 150-180°C (without flame). UV Stabilized.

End of Line Plug-Maximum working pressure25Bar.

Pressure switch-LPCB to EN 12094-10 2003.

End of line adapter to Close open end of tube and pressurize it.

T connection tube to tube .Temperature range TS:-20°Cupto+65°CDiameter:to fittubeOD:6mm.

2X1.5sq.mm PVC Insulated PVC Seethed copper conductor single core cable as required.

Indication & Control Unit- Input voltage/ supply 220-240 V with battery backup up to 4 hours. System will trigger alarm either if (PS1+ and PS1-) or (PS-2 + and PS2-) are shorted by potential free contact. If system gets triggered, then corresponding indication will start occurring on indication front panel. At output signal 24V signal @ max 05 amp get generate and 2 relays get active system buzzer will start if (R1+ and R1-) or (R2+ and R2-) are shorted by reed switch or potential free contact. If system gets triggered, then corresponding indication will start occurring on indication front panel. At output signal 24V signal @ max 05 amp get generate and 2 relays get active. Note in this case there is no 85bd alarm. Only Buzzer will alarm.

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