ML19220A371
| ML19220A371 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 01/23/1976 |
| From: | Ernst M Office of Nuclear Reactor Regulation |
| To: | Moore V Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7904170493 | |
| Download: ML19220A371 (5) | |
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~ 3-( 8.2.2 Operatino Costs a r At the operating license stage a determination must be made whether it is econcmical to cperate the plant or not. Once a plant is constructed the capital costs must be considered as sunk ccsts and the operating ccsts become the important costs to consider. Since Three Mile Island, Unit 2 will he one of the least expensive base lead plant in the GPU system to operate, cost savirgs will be realized through its cperation. Only Three Mile Island 'Jnit 1 and two small hydroelectric plants totaling ZE i:We are expected to have icwer operating costs in the GPU system than IMI-2. The retirement of two older fossil-fired plants totaling 162 MW (sum.Ter rating) is anticipated in 1979. The retirement of these units which were earlier directly related to the expected cpera-tion of TMI-1 and 2 have now beccme more a matter of timing of ncu pollution control regulations rather th:n neci capacity additions. Table 2 represents a ccmparison of a nuclear plant of 830 MW with a coal unit of C00 MU operating in 1978 at various plant capacity factors. The tabla provides the differential total costs and differantial operating costs whic?. shcw the nuciaar a'ternative te be.:. ore econcaical to add to che system. The nuclear fuel costs, assuming a 50 percent plant capacity factor, amcunt to C14.10,cer :W-year cc paced to t?.e cca! ccsts cf q,,,, , o 4
( b 9 ' $6t. 65 per K'J year for the same plant ca;:acity factor. In terms ^ of total operating costs (including fuel costs) the nuclear plant costs,sa.:ld be $E6.E7 per K'..'-year less than the coal alternative using a 50 percent plant capacity factor. The savings in operatinc costs increasa at higher capacity factcrs. Figure 2 provides a ccmparison of the total generating cost between the nuclear and coal plant as a function of plant ccpa-city factor with the 5: 2aknen point estinated at 3" plus percent. Even if the assumption were made that system energy recuirements did not grew after 1974, T".I-2 should st '.1 be cparated because of fuel and operating cost savings. With TMI-2 cn line in "ay, 1978, the applicant e H ested an overall system operating cost savings of over 555 million in 1973 based on assumption of no gr:wth in system energy requirements frca.1974 thrcugh 1978.6 I)" L <, e.*J
t TABLE 2 ECON 0t1ICS OF ALTERNATIVE EtlERGY SOURCES AS A FUNCTIOM OF CAPACITY FACTOR - (huCLEAR UNIT AUD COAL UNIT 300 i1U,. OPERATION Irl 1978) O fluclear Base Coal h Canacity factor 50 60 70 80 50 60 70 80 a Costs b
- 1. Investi.:ent Cost, 4/KW-yr 107.40 107.40 107.40 107.40 69.75 69.75 69.75 69.75
- 2. Fixed 0 & M, 5/KW-yr 11.76 11.76 11.76 11.76 7.35 7.35 7.35 7.35
- 3. Variable 0 & ti, $/KW-yr 5.39 6.46 7.54 8.62 16.12 19.34 22.57 25.79
- 4. Fuel, S/KW-yr 14.10 16.92 19.75 22.57 64.65 77.Fg 9n.s1 103.44 Total Cost, $/KW-yr 130.65 142.54 146.45 150.35 157.87 174.02 190.18 206.33
,mV Di f feren tial Cos t', $/KW-yr BASE BASE BASE BASE 19.22 31.48 43.73 55.98 g a Totai Operating Cost, 31,25 35.14 39.05 42.95 88.12 104.27 120.43 136.58 f 5/KW-yr (2 + 3 + 4) l o -) i ] Differential Operating Cost, BASE BASE BASE BASE 56,87 69.13 81.38 93.63 4/KU-yr SOURCE: Calculated from revised data in FR, Table 8.4-1. I "All costs are 1978 estimated values. Basuu on levelized fixed charge of 15 percent. f
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