R&M OF SG, TG, HP BYPASS, SDCS & BOP (CHP, FO & CT FAN) CONTROL

SYSTEM OF TALCHER- ST-I (2 X 500 MW)

SALIENT TECHNICAL FEATURES:

The R&M OF SG, TG, HP BYPASS, SDCS & BOP (CHP, FO & CT FAN) CONTROL SYSTEM OF TALCHER- ST-I (2 X 500 MW) package of Talcher Super Thermal Power Station is intended for the procurement of the equipment and systems for the control, protection, operation and monitoring of the Main plant SG, TG & Off Site areas.

The control system, called Distributed Digital Control Monitoring & Information system (DDCMIS) envisaged consist of the following sub-systems:-

1.UNIT DDCMIS comprising of the following controls:-

a.Burner Management System including Boiler Protection and Start-up Drain Control System (SDCS).

b.Turbine Protection and Control system including turbine EHC, TSC, ATRS, ATT, HP-LP BYPASS and Generator Auxiliaries

2.FOPH/CT DDCMIS shall comprise of complete FOPH system & control of Cooling Towers.

3.CHP DDCMIS shall comprise of complete CHP system like conveyor system, Crusher, Flap gates, ILMS, SM, MD & various pumps, Electrical Breakers etc.

4.STACKER RECLAIMER -1 DDCMIS consists of complete control of Stacker Reclaimer. Hardwired Signal exchange between Stacker Reclaimer-1 & CHP DDCMIS.

5.STACKER RECLAIMER -2 DDCMIS consists of complete control of Stacker Reclaimer. Hardwired Signal exchange between Stacker Reclaimer-2 & CHP DDCMIS.

Its Human Machine Interface & Plant Information System (HMIPIS) is based on Large Video Screen (LVS) displays supported by 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. Local/Back-up operation of equipment is envisaged through Push Buttons in some application. The total system is networked through a Station-Wide LAN for use of real time data of various plant areas by other users like maintenance, planning, efficiency enhancement groups etc with adequate security policies. The alarm annunciation is also implemented as a part of DDCMIS system.

Measuring instruments such as Electronic Transmitters, Temperature elements and Temperature transmitters, along with requisite process connection & piping, LIEs/ LIRs etc are also included under this package.

Power supply system comprising 24 V DC power supply has been envisaged for offsite 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.

Main equipment (SG & TG) related instrumentation system like Scanners, HEA Ignitors for STG and Auto Synchronizer, Over Speed Protection Modules & Load Transducers for Main Turbine and Generator have been envisaged in the scope of work.

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.