Question
This FBR is licensed to operate at the maximum power 2381 MWth. Its thermal efficiency is 42%. Its capacity factor is roughly at 70% on
This FBR is licensed to operate at the maximum power 2381 MWth. Its thermal efficiency is 42%. Its capacity factor is roughly at 70% on average. The plant life time is 30 years with refueling interval and lead and lag time of 1 year. There are 2 batches in the core. The axial blanket and radial blanket have 2 batches and 5 batches, respectively. About 1480 kg/yr is being charged in core only. There are 1410 kg/yr, 160 kg/yr, and 135 kg/yr of plutonium being discharged from the core, axial blanket, and radial blanket, respectively. For the heavy metal content, the information is given below:
Core | Axial | Radial Blanket | |
Charge | 12600 | 6360 | 8480 |
Discharge | 11600 | 9150 | 8290 |
During this economic time frame, the bond and equity fraction are 0.55 and 0.45, respectively. We will take an average on the bond and equity interest rates to be 2.5% and 7.0%, respectively, with a fixed charge fraction of capital cost of 0.03. We will assume that the tax rate is 50% and the price of plutonium at 2020 is about $20 per gram on average. For the capital cost of this plant with interest during construction, it is estimated to be about $1,000 per kWe. The operation and maintenance costs per year are $17 per kWe on fixed point and $1 per KWe on variable point. The fabrication costs per kg for the core, axial blanket, and radial blanket are $1,150, $50, and $150, respectively. In our FBR design, we do not have to worry about spent fuel shipping and disposal. However, we have to be concerned about reprocessing (including shipping and waste disposal); here, it is estimated to cost us at the same rate of $600 per kg for the core, axial blanket, and radial blanket. Guideline: You will calculate: 1. Return of an return on a capital investment 2. Fixed charges on a capital investment 3. Taxes on a capital investment 4. Fixed O&M,5. Fuel cycle expenses (for a single equilibrium batch) - please note that in this analysis, fuel costs should be calculated individually for each of the three zones (core, axial blanket, and radial blanket). Also, it is important to think about purchase or sale of plutonium. The table below should help guiding you to the right-thinking process:
Fabrication and reprocessing | Plutonium purchase or sale | Subtotal | |
Core | |||
Axial Blanket | |||
Radial Blanket | |||
Subtotal |
Total Fuel Cost= ________mills/kWh
6. Fuel taxes
7. Total levelized power cost
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