ML20052C709
| ML20052C709 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 01/27/1982 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML20052C706 | List: |
| References | |
| FOIA-82-9 NUDOCS 8205050419 | |
| Download: ML20052C709 (5) | |
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UNITED STATES y'
g NUCLEAR REGULATORY COMMISSION g-WASHINGT ON, D. C. 20555 9,
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January 27, 1982 Ref: Docket Nos. 50-438 N
o 50-439
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9 ggcepiED Mr. Don Hoffman Weekend Staff Writer t
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The Clarion-Ledger s;re msm ensa P.O. Box 40 g
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ff IN RESPONSE REFER Jackson, MS 39205 TO F01A-82-9 42 15
Dear Mr. Hoffman:
This is in reply to your letter dated January 7,1982, in which you requested, pursuant to the Freedom of Information Act, access to all documents pertaining to the sale or proposed sale of Tennessee Valley Authority (TVA) excess power capacity to any and all utilities and other distribution systems outside the service area of the TVA as cefined in the Self-Financing Act of 1959.
You stated your request covers the period January 1,1980 to the present.
In response to your request we wish to inform you of the following:
The latest official submission from TVA was the Bellefonte Operating License - Environmental Report which the NRC received in June 1978.
Chapter 1 of the Environmental Report addresses the purpose and need of the proposed facility, and provides some detailed discussion of capacity plans in the 1980's.
Five selected pages from that document, that discuss outside sales and purchases, are enclosed.
All outside sales planned by TVA as of 1978 represent a part of a long-standing diversity interchange program wherein TVA provides firm power to neighboring utilities during their peak season and receives a similar amount back during its peak period.
The enclosed pages indicate the utilities and quantities of power involved.
The NRC is also aware (from newspapers and other public sources), that in recent months TVA has been exploring the possibility of selling capacity to other utilities as one option to help finance its current capacity expansion plan.
In this regard, TVA published a report in January 1982 entitled, " Review of the TVA Load Growth / Plant Construction Situation".
The NRC has not received a copy of this report as yet, but we understand it is available from TVA.
This completes our action on your request.
Sincerely, s,
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8205050419 820127 g' J. M. Felton, Director gA Division of Rules and Records hF NO2 9 PDR Office of Administration
Enclosures:
As stated
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TVA is interconnected at 28 points with neighboring utility i
systems.
Transmission connections between systems with peak load' l
requirements occurring during different seasons of the year can
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reduce the reserve capacity that each system must maintain to I
i achieve the necessary level of reliability.
Agreements for the I
j interchange of power are called " diversity interchange agreements." TVA, a winter peaking system, has such interchange agreements with these utility groups whose peaks occur in the i
summer months.
TVA has an agreement with Mississippi Power &
Light Company for the exchange of 1,500 MWe of power.
In addition, agreements have been reached with the Southern Company tor 300 MWe and the Central Illinois Public Service Company, Illinois Power Company, and Union Electric Company f or 260 MWe of exchange power.
This interchange power of 2,060 MWe is cohsidered by TVA to be firm generating capacity during its peak season and is accounted for in that manner in all generation j
planning studies.
At the beginning of the winter exchange period in 1979, the diversity interchange agreement with Mississippi Power & Light company will be reduced to a 1,100 MWe exchange level and the agreement with the Southern Company will be reduced I
to a 220 MWe exchange level.
These changes will reduce the amount of interchange power on the TVA system from 2,060 MWe to 1,580 MWe.
After the beginning of the winter exchange period of 1980, the diversity interchange with Mississippi Power and Light will be further reduced to 700 MWe and the agreement with the lJ
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1.1-6 Southern Company will be further reduced to 140 MWe exchange level, thus reducing the amount of interchange power from 1,580 MWe to 1,100 MWe.
TVA's interruptible load under contract is utilized as an operating reserve (interruptible on 5-minute notice).
Interruptible load is used to peak shave and to provide operating flexibility by covering contingencies such as sudden large demand increases resulting from corresponding change in temperature at the time of the system peak and for offsetting the effects of loss of spinning reserve as a result of an instantaneous loss of a large unit.
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TVA has three basic. types of interruptible power under contracts with large industrial customers served directly by TVA.
The types are 2 percent, 2.5 percent, and 3 percent interruptible l
power.
TVA has the right to curtail power 2, 2.5, and 3 percent of the time during the respective 10-year contract periods.
As of September 30, 1977, TVA had under contract 58.0 MWe of 2-percent interruptible power, 107.5 MWe of 2.5 percent ll l
interruptitiv power, and 421.0 Mue of 3-percent interruptible ll power.
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I 1.1.1.3 Power Exchanges - Generation planning by TVA is I
based on the system's peak load requirements which occur during l
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the winter nonths.
As discussed in Section 1.1.1, the diversity interchange power which TVA and the surrounding utilities exchange on a seasonal basis is considered by TVA to be firm generating capacity during its peak season, thereby saving this amount of installed capacity.
1 Table 1.1-24 lists the diversity power exchange and I
j other power purchases and sales between TVA and other utilities at the time of the peak.
1.1.2 System capacity - TVA's generating capacity planning is based on probability techniques according to the current sta te-of-the-a rt.
These techniques (see section 1.1. 3) are used to determine the generating capacity required to supply the load requirements plus reserves with system reliability in terms of the number of days per year that the system load may be expected t
to exceed the available generating capacity.
.l System reliability is dependent upon many factors such as the I
reliability of the many generating sources making up the system and the multiplicity of components associated with each generating source.
TVA plans for generating capacity additions to provide the reliability of bulk power supply in accordance
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- 1. 1-105 O
Estimated Interchange Load Peak Demand Delivered Served Dependable TVA System (Received) by capacity Period MW MW TVA-MW MW Summer 1980 22,950
+1,500 24,530 33,140 Winter 1980-81 26,650
-1,100 25,550 37,259 Summer 1981 24,150
+1,100 25,250 34,353 Winter 1981-82 28,100
-1,100 27,000 34,472 Margins Desired Available Period MW
__ MW Summer
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1980 5,765 23.5 8,610 35.1 Winter 1980-81 6,158 24.1 7,709 30.2 Summer 1981 5,934 23.5 9,103 36.1 Winter 1981-82 6,453 23.9 7,472 27.7 The above power supply projection is based on commercial operating dates of the Bellefonte Nuclear Plant units of June 1980 and March 1981.
The available reserves indicated on the previous tables for the 1980-82 periods are slightly higher than TVA normally plans.
These higher reserves result from a decrease in load i
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Tabir 1.1-2k
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l IGIER EXCwll1GES Interchance Capacity ' Availatilc./
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, l Actual l
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1565 o'
o 1566 150 o
1967 650 o
1968 1,250 lio 1S49 1,800 l';o.
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1970 1,800 o
1971 1, 81 5 900 4
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1972 2,917 o
j-1973 2,360 o
197h 2,46o o
i 1975 3,060 0
1976 2,l60 0-i 1977 2,06o Irojected o
1978 2,060 0
1579 2,060 o
- i 1580 1,58o o
1981 1,100
.o i
1982 1,100 0
1902 1,100 o
t 198'4 1,100 o
l 1585 1,100 0
1986 1,100
-o i
1987 1,100 o-j l
l Data for the pericvl 1565-77 is capacity available from l
cales and seasonal capacity c:: change and firm oblicctions to other syste:as a'.; tine of peak cle:..nd.
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