64 of 74  Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Item  No  Description  Duty  Installed  Power  Standby  power  Absorbed  Power  Operation  Daily  Consumption  Yearly  Consumption  kW  kW  kW  h/d  kW/d  kW/year  a  b  c=axb  d=c x365  1  2  3  4  5  TOTAL for Organic Load, 100% Load %100 Flowrate  kg COD/year  Power Consumption  kW/year  Unit Power Consumption  kW/COD  i. Daily operation hours of the mixers  : 24 hours/day  ii. Daily operation hours of internal recycle pumps (if any) : 24 hours/day at minimum 200- 300% of average flow  iii. Daily operation hours of return sludge pumps  : to be calculated based on %75 of  daily average flow rate. Power  absorbed against the calculated  flow rate to be supported by the  supplier’s data (e.g. graph and/or  document)  iv. Daily operation hours of excess sludge pumps  : sludge produced at the wastewater  temperature given below and the  solid content of the excess sludge.  Power absorbed against the  calculated flow rate to be  supported by the supplier’s data  (e.g. graph and/or document)  v. Daily operation hours of scraper bridges  : 24 hours/day  vi. Daily operation hours of ventilation fans  : 24 hours/day  vii. Daily operation hours of extract fans (for foul air) and bio-filter : 24 hours/day  viii. Interior and outdoor lighting and any other small powers : nil  Power requirement and running hours of the blowers shall be calculated based on the following steady  state conditions. The tenderer shall prepare one calculation sheet for each scenario by using the below  data.  3_Vol3_d4.3_Section 3_Plant Description_GIR_rev08  ix. Site level  : +5.00 m.  x. Wastewater temperature  : 15  C 