Specifications

Enquiry Specification for Wagon Tippler with Side Arm Charger and Associated works
NRO/CON/WT/533
EPI – New Delhi Volume-2B, Rev.0 Page 12 of 63
solenoid valves shall be linked with the wagon tippler rotation, i.e wagon tippler
position switches and timers rotation. There shall be two water pumps (one
working and one reserve).
(5) Compressed air station shall be provided for DFDS systems. Standby
compressor shall be provided.
(6) At each pump station air receiver capacity shall be considered @ 16% of the
compressed air consumption in m3/min or 2 m3 capacity, whichever is higher.
(7) Adjacent to pump station of wagon tippler dust suppression system, MS tank of
5 mm thick with stiffener for 1-hour storage capacity shall be provided by the
Bidder. The inside surface of MS tank shall be epoxy painted.
(8) The Bidder shall provide plat form, walkway, stair case adequate for the
necessary approach to the equipment for operation & maintenance point of
view.
(9) Duplex strainer with SS filter element shall be provided at inlet to dust
suppression system pumps to remove all suspended particles exceeding 100
micron
(10) Monorail with chain pulley block shall be provided for handling of equipment of
weight more than 300 Kg
(11) The Bidder shall provide the following minimum instruments
(a) High level and low level switch in water tank. Low level switch interlocked
with pump operation.
(b) Spring loaded operated pressure release valve (adjustable) at pump
discharge line for by passing water line to tank to avoid shut-off condition.
(c) Pressure gauge at all pump discharge line .
(d) Pressure gauge at air-receivers, safety valve and drain provision
(e) At consumer application points following instruments shall be provided :
- Independent pressure gauge & control valve (Ball valves) shall be
provided for pressure regulation .This unit shall housed in a steel
cabinet of IP-55 construction.
- For flow activation, solenoid operated valves shall be provided in
water and airline.
- Belt conveyor load monitoring switch shall be provided for sensing
conveyor running with material.
- Pressure switch in compressed air line to prevent spray operation at
low pressure.
- Indication lamp in FAS to show ON/OFF operation of spray.
- Individual valve shall have selection mode to run in Auto/Manual
mode.
- Sprinkler operation shall be regulating by sequence timer.