SALIENT TECHNICAL FEATURES FOR UP-GRADATION OF OFFSITE CONTROL &
INSTRUMENTATION SYSTEM PACKAGE, UNCHAHAR THERMAL POWER
STATION, STAGE –I (2X210MW)
“Salient Technical Features of the equipment/systems/services covered in
IFB No. 40074957 dated 12.05.2017 are mentioned below. These Salient
Technical Features are mentioned only to facilitate the prospective bidders
to prima-facie understand the requirements under the tender and shall not
in any way limit or alter the scope of work and technical
features/specification of equipment/ systems/ services covered in the
Bidding Documents. Detailed provisions in regard of scope of work and
technical features/specification of equipment/systems/services, contained
in the Bidding Document shall be final and binding.”
SALIENT TECHNICAL FEATURES:
Up-gradation of offsite control & instrumentation system package, Unchahar
thermal power station, stage –I (2x210mw) is intended for the procurement of
the equipment and systems for the control, protection, operation and monitoring
of the offsite areas (Like RWPH/MUWPH, CTPH, CLWPH TWS etc.).
The control system, called Distributed Digital Control, Monitoring & Information
system (DDCMIS) envisaged consist of monitoring and control of following -
systems:-
1) RWPH/ MUWPH system
2) CTPH & CT Fan system
3) Clarified water pump house system
4) HT/LT Soft water pump house system
5) Travelling water screen system
Its Human Machine Interface & Plant Information System (HMIPIS) is based on
TFT monitor based Operator Work Stations (OWS). These devices through
customized user-friendly displays, soft alarm facia and pop-up displays are used
for giving fast pin-pointed faults/ status to the operator. The total system shall be
networked through an existing stage-1 Station-Wide LAN for bi directional
transfer of real time data of various plant areas by other users like maintenance,
planning, efficiency enhancement groups etc with adequate security policies.
Alarm annunciation are also implemented as a part of DDCMIS system. A GPS
based master and slave clock system shall be provided for uniform and
synchronized timing signals through out the entire station.
Measuring instruments such as Electronic Transmitters, Temperature elements
and Temperature transmitters, along with requisite process connection & piping,
JB etc are also included under this package.
Power supply system comprising 24 V DC power supply and UPS have been
envisaged for above control and instrumentation systems. Control room
furniture comprising control desk, cabinets/panels and furniture have also been
included in the scope of work.
Power cables, Control Cables and instrumentation cables and erection H/W are
envisaged under the scope of work.
Valves with integral motorized actuators are included in the scope.
Vibration monitoring system and CCTV system are also included in the scope.
The scope of work also includes modification/dismantling/rectification in existing
system/ equipment, installation of some of the cable trays, AMC for DDCMIS,
mandatory spares, Tools and tackles and training for employer personnel’s etc.
