6 of 74  Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 3: Plant Description  As stated in Section 1.4.1, the Contractor shall conduct a new topographical survey for his design  works.  Giresun-Ordu Energy Transmission Line (Single Circuit 474 MCM) is passing over the land of  WWTP as shown on the general layout. The construction permission conditions and safety approach  distances (SAD) description is given below$^{1}$ :  “The nearest vertical distance between the land located between the poles of 22-23 of 154 kV Giresun- Ordu ETL (Single Circuit 474 MCM) and passing over the land between 100-142 m distances to 154  kV Giresun-Ordu ETL pole no 23, and energy transmission line is measured as 37 m from the ground.  Construction height which can be done on the natural ground of the land below the access area borders  of the 154 kV Giresun-Ordu ETL (Single Circuit 474 MCM) when safety distance in the Article 44  paragraph h of the Regulation on Electrical Power Current Plants (Safety distance in the Article 44  paragraph h of the Regulation on Electrical Power Current Plants; in the case of the greatest loop of  conductors, at the maximum allowed operating voltage 170 kV of the line, the minimum vertical  distance to flat-roofed structures that can be accessed by anyone or inclined-roofed structures that can  not be accessed by anyone over which the conductors passing is specified as of 5 m) and the  conductivity of the conductor is calculated at a temperature of 45°C, the outer phase conductors of the  line (both side conductors of the line are outer phase conductors) can not exceed a height of 26 m  between points at 24 m distance measured perpendicularly from the projections on the natural ground  to the outside of the line. Since, beyond points at 24 m distance of the outer phase conductors of the 154 kV Giresun-Ordu ETL  (Single Circuit 474 MCM) measured perpendicularly from the projections on the natural ground to the  outside of the line, would be gone out of the access area of the line there is no risk in building  construction in desired height from these points.”  The layout of the plant shall be logical and feasible, thereby reducing the extent of piping and  facilitating the access to the main equipment. The area requirement shall be kept as low as possible.  There shall be easy access for trucks to all buildings for maintenance as well as to all containers.  The most critical mechanical equipment such as inlet pumps, all sludge pumps, blowers, mechanical  thickeners, decanters etc. will all have a stand-by unit to be taken into operation in case of breakdown,  maintenance or repair.  The administration building shall be located in such a way that major parts of the plant, including  traffic through the main entrance gate, shall be visible from the control room. The administration  building shall be constructed including staff facilities, laboratory, control room, meeting rooms etc. In  addition, a separate building with workshops will be constructed.  If possible, all buildings shall be located in one area for the operational simplicity.  3_Vol3_d4.3_Section 3_Plant Description_GIR_rev08  1 TEIAS (Turkish Electricty Transmission Corporation) 14 Regional Directorate (Trabzon) Directorate of  Operation and Maintenance letter with 8th February 2018 and 61332 number