BANGLADESH POWER DEVELOPMENT BOARD TENDER ... - BPDB

) Control EquipmentThe control equipment shall be of the float-switch actuated control type installedin the water storage tanks and shall be of suitable switch for draw-down in thedeep-well. One of the two deep-well pumps shall start operation alternately whenthe water level in the water storage tank goes down to the designated level.When the water level of the deep-well goes down to the designated level, thedeep-well pump shall be stopped immediately, and the other deep-well pumpshall be started automatically. Breakdown of deep-well pumps shall be connectedto an alarmed on the control board in the control room.c) Control BoardThe control board shall be installed in the fire pump-house.A boxed knife switch shall be provided in the fire pump-house for each pump.d) Signal Indicatorsi) All indicator lights shall be of AC type with coloured glass or plastic lensand shall be so constructed that the lamp can be readily fitted and removed andthe lens changed from the front of the boards.ii) Ammeters shall be capable of accepting the starting current characteristicsof the corresponding motor and shall be suitably calibrated to indicate the fullload running current at three quarter full scale deflection.e) Conduit Piping and WiringConduit piping and wiring for the work shall comply with the applicable provisionsof the Specification.(5) InstallationThe Contractor shall construct a concrete base foundation for accurate mountingof the pumping unit and shall provide foundation bolts for anchoring the pump,which shall be carefully levelled and grouted in place.The pumping unit and control equipment shall be housed for all weatherprotection.(6) AccessoriesThe following accessories shall be equipped for each pump:Sluice valveCheck valveAir release valvePressure gauge with cockWater pipeWell cover: 1 Pc: 1 Pc: 1 Pc: 1 Pc: Required Length: 1 PcGhorasal 200 MW to 300 MW Gas Turbine Peaking Power Plant Project (Vol-2 of 3)186