ML20052E544
| ML20052E544 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 05/05/1982 |
| From: | Fox C ILLINOIS POWER CO., SCHIFF, HARDIN & WAITE |
| To: | Clark H, Ferguson G, Paris O Atomic Safety and Licensing Board Panel |
| References | |
| ISSUANCES-OL, NUDOCS 8205110219 | |
| Download: ML20052E544 (5) | |
Text
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SCHIFF HARDIN & WAITE EASHINGTON OFFICE:
-01 Connecticut Kv~ nue.Ff5 Washington. D.C. 20036 7200 SearsTower. Chicago,lilinois 60606 e
Telephone (312)876-1000 Tvex 910 221-2463 bephone (202) 857-0600' Telex SHW 64590 May 5,1982 '82 IST -7 E M
,=
Hugh K.
Clark, Esq., Chairman P.O. Box 127A Kennedyville, Maryland 21645 9
Dr. George A. Ferguson
+
School of Engineering Howard University Afg g
2300 Sixth Street, N.W.
Washington, D.C.
20059 7
Dr. Oscar H.
Paris Atomic Safety and Licensing Board y
U.S. Nuclear Regulatory Commission s
e Washington, D.C.
20555 Re:
Illinois Power Company, et al, Operating License for the Clinton Pcwer Station, Unit 1 Docket No. 50-461 OL
Dear Administrative Judges:
Enclosed, as Judge Clark requested yesterday at the Third Special Prehearing Conference, is a copy of the News Re-lease in which Illinois Power Company anncunced a new schedule for fuel load and commercial operation of Unit 1 at the Clinton Power Station.
Very truly yours, Charles D. Fox IV One of the Attorneys for Applicants CDF:kb Enclosure Secretary of the Commission /
cc:
Executive Legal Director Philip L. Willman Jan L.
Kodner Prairie Alliance Herbert H. Livermore Atomic Safety and Licensing Board Panel 5}
Atomic Safety and L censing 0
Appeal Board Panel 29 9 $
Richard Goddard
$5 hl G
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/II/NB/S JOR IMMEDIATE RELEASE For further information centact: Al Adams, 217-424-6400 IP
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NEWS RELEASE POWER
- DECATUR, IL., April 15, 1982 -- Illinois Power Company N
today announced a new construction schedule and cost estimate for the Clinton nuclear power station Unit 1.
The new schedule for fuel load and commercial operation of a
the 950,000 - kilowatt plant is January and August, 1984, respectively, a 12-month extension of the existing schedule.
The new schedule incorporates the seven-month delay in construction already cited in the March status report to the Illinois Commerce Commission.
Two factors primarily are responsible for extension of the schedule: 1) recent industry analysis of potential " water hammer" problems which required redesign of the control rod drive system, and 2) impact of a stop-work-order imposed January 15, 1982 on safety-related electrical work at the construction site.
(Back-ground information on the control rod drive system is attached.)
The new cost estimate for the plant is $2.170 billion.
This is an increase of $351 million over the current estimate.
S247 million of the revised estimate is due to extension of the construction schedule.
The remaining $104 million is l
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due primarily to: 1) an expanded quality assurance program at the construction site; 2) additional amounts of cable ind other electrical components to meet changing design requirements,
- 3) enhancements to the steam supply system, and 4) redesign of the control rod drive system.
Wendell J. Kelley, Chairman and President, said:
" Illinois Power Company has made an absolute commitment to the building of a safe operating plant at Clinton.
Our response to the potential ' water hammer' problem is a good example of our commitment.
"No problem with our present design has been demonstrated but to remove any doubt as to. the safety of the system, we are in the process of a redesign of the control rod drive piping system.
The bottom line is that we are now estimating the completi.on of construction in January, 1984 ; however, we are going to take whatever time and spend whatever money is necessary to insure a safe operating plant when it is completed."
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Attachments: 1)
Control Rod Drive Problem 2)
Cost and Schedule Comparison
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April 15, 1982 CONTROL ROD DRIVE PIPING PROBLEM A control rod drive system is a mechanism used to control the amount of heat produced in nuclear reactors to boil water for making steam.
When the control rods are fully inserted they halt the nuclear reaction and bring the plant to shutdown.
In late 1981 new, sophisticated methods of analysis used by the nuclear industry indicated some potential for " water hammer" in the piping of the control rod drive systems during times of fast shutdown.
Webster's New Collegiate Dictionary defines water hammer as "a concussion or sound of concussion of moving water against the sides of a containing pipe or vessel".
While no known control rod drive piping deficiencies exist at Clinton or at any boiling water reactors now in operation, traditional methods of analysis can not disprove the water hammer theory or accurately determine its potential.
By the time the industry was made aware of the new water hammer analysis, the original design work for the Clinton control rod drive system was nearly complete.
To further insure safety, to remove doubt about any possible water hammer problems, and to avoid licensing and start up delays at a later date, Illinois Power decided to redesign the Clinton control rod drive system.
The redesign and scheduled completion of the new control rod drive system resulted in the estimate of the seven-month delay reported in March, 1982.
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rt rt 4/82 COMPARISONOFONE-UNITBOILINGWATERREACTdR k
ft NUCLEAR PLANTS CURRENTLY UNDER CONSTRUCTION l3 rt PJ Percentage Present increase Estimated Amount of Original Present over Utility Construction Comercial Slippage in Estimate Estimate Original Capacity Unft Cost Station Nuclear Unit Operation Date Estimated Dates IRITTtWs of ooilarsj Estimate _
m per tw Shoreham #1 Long Island Lighting Co.
3/83 7 yrs. 9 unths.
$261
$2.500 8581 819
$3.052 Mine Mlle Point #2 Mlagara Mohawk Pwr. Co.
10/86 8 yrs. 10 enths.
423 3.700 7751 1.100 3.364 Feral #2 Detroit Edfson 11/83 9 yrs. 10 mnths.
229 2.000 1731 1.092 1.831 1/83 8 yrs. O smths.
201 1.258 5261 810 1.553 Zimmer #1 Cincinnatt Gas & Elec. Co.
WNP #2 Wash. Pubile Pwr. Supply Sys.
2/84 6 yrs. 5 mnths.
465 3.103 5671 1.103 2.831 River Bend #1 Gulf Stat.ts Utillties Co.
12/85 6 yrs. 3 enths.
376 3.600 8571 940 3.830 Citnton #1 Illinois Power Company 8/84 4' yrs.,2 mnths.
429 2.170 4065 950 2.284 5
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