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 25 of 63
including arm positions etc. and also for down stream equipment of
wagon tippler.
- A control desk shall be provided also on the side Arm Charger.
- Remaining features shall conform to General Technical Specification.
(iv) Weighing System :
Microprocessor based weighing system shall be provided. The load cell
shall be magneto – elastic type / strain gauge type, suitable for over
load up to 300% of their nominal load. Minimum 3 (three) numbers of
load cells are to be provided at each weigh bridge integral with wagon
tippler table. Accuracy of weighing system shall be +/- 0.1% or better.
For other features Specification for Belt scale shall be referred.
Indicating cum data logging type weighbridge for weighing both loaded
and empty wagon shall be complete with PC based operating station in
the wagon Tippler Control Room.
The supply shall be complete with the following :
Load cells, signal converters, PCs , 19” colour monitor, keyboard,
mouse, etc.), original licensed operating software and application
software, inkjet printer, UPS, control room furniture for installation of
PCs, printers, power distribution boards, etc.
The capacity of the weigh bridge shall be adequate to permit passing of
180 metric tones weight of shunting loco at the speed of 8 Km per hour.
Remaining features shall conform to General Technical Specification.
(v) Control and Operational Requirement
All drives and mechanisms shall have Auto, Remote – interlocked mode
and Local mode controls. Local controls shall be provided and normally it
will be used for maintenance and testing purpose only. Only safety
interlocks shall be covered in Local control. STOP push button of Local
control shall be able to stop the drive/mechanism selected for any mode
of control.
It shall be possible to operate the side arm charger (SAC) both from
control panel located in the Operator cabin of SAC and Control desk
located in the control room. Auto operation of SAC along with wagon
tippler operation shall be done from Control desk. SAC operation from its
control box in the SAC operator cabin will be done as required after the
receipt of instructions / permissive from control desk operator.
Operation philosophy shall be developed in such a way that normally
one operator shall be required to operate the wagon tippler and SAC
from wagon tippler control room and one helper near tippler table to de-
couple the leading wagon from the rake. Emergency stop switch shall be
considered at WT and SAC in addition to control desk.