QUESTION 1. (50) Design a pump station that will abstract water from the Orange River and supply it to a treatment plant. Details of the scheme are as follow. River: Maximum water level 841 m 837 m Minimum water level Side slope of the river 1:2 Sediment particle size (d50) . 0.3 mm Sediment density . 2850 kg/m3 Pump station and pipeline: 1. Level 842 m 2. Material depth that can be excavated +-3 m below842m 3. Pump rate (Q) 0.2 m3/s 4. Pump time Standard and Off-peak time 5. End reservoir level (FSL) 892 m 6. Pipeline length 4700 m 7. Location of the scheme Lower Orange River Energy cost: Obtain the relevant information regarding the appropriate charges. The following charges should be included in the analysis 1. Connection fee 2. Capital charge 3. Service charge 4. Administration charge 5. Demand charge and 6. Active energy charge Economic parameters: 1. Discount rate = 7% 2. Escalation of costs functions that are reflected in the text is 9%/annum and it is assumed that future costs will also increase at the same rate. 3. Economic life of all the equipment is 20 years 4. All the water will be sold at 48c/m3. 5 5. It is estimated that the unit charge for the water will escalate at 2%/annum. It has been reported that sediment poses a problem for the inlet to the pumps, and it can block the intakes. A de-siltation facility must be considered and included in the design. The following alternative installations must be considered for the river off take. 1. Wet well 2. Dry well 3. Inclined pump Compile a List of Quantities and use the cost relationships provided in Section 3 to estimate the cost for the project. Use the Aqua Hydraulics (or similar) software to execute the LCC of the scheme. Make freehand drawings of the proposed layout and indicate the dimension of the pump station and the desiltation works on the drawings QUESTION 1. (50) Design a pump station that will abstract water from the Orange River and supply it to a treatment plant. Details of the scheme are as follow. River: Maximum water level 841 m 837 m Minimum water level Side slope of the river 1:2 Sediment particle size (d50) . 0.3 mm Sediment density . 2850 kg/m3 Pump station and pipeline: 1. Level 842 m 2. Material depth that can be excavated +-3 m below842m 3. Pump rate (Q) 0.2 m3/s 4. Pump time Standard and Off-peak time 5. End reservoir level (FSL) 892 m 6. Pipeline length 4700 m 7. Location of the scheme Lower Orange River Energy cost: Obtain the relevant information regarding the appropriate charges. The following charges should be included in the analysis 1. Connection fee 2. Capital charge 3. Service charge 4. Administration charge 5. Demand charge and 6. Active energy charge Economic parameters: 1. Discount rate = 7% 2. Escalation of costs functions that are reflected in the text is 9%/annum and it is assumed that future costs will also increase at the same rate. 3. Economic life of all the equipment is 20 years 4. All the water will be sold at 48c/m3. 5 5. It is estimated that the unit charge for the water will escalate at 2%/annum. It has been reported that sediment poses a problem for the inlet to the pumps, and it can block the intakes. A de-siltation facility must be considered and included in the design. The following alternative installations must be considered for the river off take. 1. Wet well 2. Dry well 3. Inclined pump Compile a List of Quantities and use the cost relationships provided in Section 3 to estimate the cost for the project. Use the Aqua Hydraulics (or similar) software to execute the LCC of the scheme. Make freehand drawings of the proposed layout and indicate the dimension of the pump station and the desiltation works on the drawings