Vol 2 - Garney Construction

d. Install Belt Filter Press No. 3 and ancillary equipment.e. Modify Belt Filter Press Control Room North wall and install BeltFilter Press No. 3 control panel and provide temporary connectionto plant SCADA system. Note: SCADA workshops, programmingand SCADA screen design for the project must be completed priorto this point.f. Coordinate work so as to maintain two belt filter press units inoperation at all times.7. Belt Filter Presses No. 1 and No. 2 and Related Systems:a. Remove existing Belt Filter Press No. 1, associated ancillaryequipment, and control panel.b. Remove existing curb and structural supports and construct newcurb and structural supports for new Belt Filter Press No. 1.c. Install all piping (sludge feed, washwater drain, filtrate, planteffluent water and polymer solution) associated with Belt FilterPress No. 1.d. Install Belt Filter Press No. 1 and ancillary equipment.e. Install Belt Filter Press No. 1 control panel and establishpermanent SCADA connection as specified.f. Achieve successful operation (manual mode minimum) of BeltFilter Press No. 1.g. Repeat Items a. through f. for Belt Filter Press No. 2.8. Centrifuge and Recuperative Thickening:a. Install piping, valves and instrumentation associated withRecuperative Thickening (RT) up to connection point withexisting WAS piping.b. Remove one centrifuge to be rehabilitated. Only one of the twounits to be rehabilitated may be removed at a time.c. Connect RT piping to existing WAS force mains so as to maintainone force main in operation at all times. Coordinate force maindowntimes with centrifuge removal to maintain ability to alwaysfeed active centrifuges. Coordinate Polymer Injection Ring (PIR)installation into WAS feed piping to centrifuges to coincide withcorresponding force main downtime and/or centrifuge removal.Two centrifuges shall remain in operation at all times.d. Replace existing TWAS pumps at centrifuge discharge hopper soas to maintain one pump in service at all times.9. Belt Filter Press Room Ventilation Modifications:a. Demolish existing odor control ductwork and install newductwork as shown on Drawings.1) Odor control system operates under negative pressureinduced through fans located in Building No. 6. The odorcontrol duct penetration at existing West building wall willcontinue to draw odorous air from the belt filter press roomPW/WBG/382059PROJECT COORDINATIONAUGUST 15, 2012 01 31 13 - 7©COPYRIGHT 2012 CH2M HILL