ML20028B687
| ML20028B687 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 11/24/1982 |
| From: | Carey J DUQUESNE LIGHT CO. |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| GL-82-22, NUDOCS 8212030148 | |
| Download: ML20028B687 (5) | |
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Telephone (412) 4564000 Nuclear Division P.O. Box 4 Shippingport, PA 150774004 November 24, 1982 Director of Nuclear Reactor Regulation United States Nuclear Regulatory Commission Attn:
Mr. Darrell G. Eisenhut, Director Division of Licensing Washington, DC 20555
Reference:
Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 Generic Letter No. 82-22, Request for Information Concerning Steam Generator Tube Integrity Gentlemen:
This is in response to your letter of October 26, 1982, Generic Letter No. 82-22, Congressional Request for Information Concerning Steam Generator Tube Integrity, whereby you requested information pertaining to Steam enerator related work. Attached is an enclosure providing inf ormation in response to each of your concerns.
It should be noted that the Beaver Valley Power Station, Unit No.1 steam generators have performed extremely well with a minimum of repairs since the issuance of our cperating license on January 30, 1976. We have experienced one outage which can be directly attributed to steam generator - related difficulties. This outage began August 27, 1982 and ended on September 11.
l The work scope consisted of plugging one steam generator tube. The attached enclosure contains information which pertains to this outage.
Included with the enclosed table is a brief explanation supporting the i
entries made to the table. Activities arsociated with preventative maintenance have not been included with this submittal as it is considered outside the scope of this questionaire.
If you have any questions, please contact my office.
Very truly yours, J. J. Carey Vice President, Nuclear foI2 F212030148 821124 PDR ADOCK 05000334 p
Braver Valley Pcwar Station, Unit No.1 Dockst No. 50-334, Licznze No. DPR-66 Generic Letter No. 82-22, Request for Information Concerning Steam Generator Tube Integrity Page 2 cc:
Mr. S. A. Varga, Chief United States Nuclear Regulatory Commission Operating Reactors Branch No.1 Division of Licensing Washington, DC 20555 Mr. W. M. Troskoski, Resident Inspector U. S. Nuclear Regulatory Commission Beaver Valley Power Station Shippingport, PA 15077 U. S. Nuclear Regulatory Commission c/o Document hanagement Branch Washington, DC 20555 Mr. Loring E. Miller, Vice President, Nuclear Activities Edison Electric Institute 1111 19th Street, N. W.
Washington, DC 20036 i
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1 i
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i Ni l.'sl T E
' E 1 0F 3 U. S. NUCLEAR REGULATORY COMMISSION STEAM GENERATOR-RELATED - QUESTIONNAIRE RESPONSE BY YEAR 1979 1980 1981 1982 A.
HOW MANY DAYS OF UNSCHEDULED OUTAGES CAN BE ATTRIBUTED TO STEAM CE;ERATOR-RELATED DIFFICULTIES PER YEAR AT YOUR SITE?
0 0
0 15 B.
DURING EACH OF Tile YEARS IN QUESTION,110W MANY STEAM GENERATOR TUBES HAVE BEEN
, PLUGGED IN EACll STFAM GENERATOR?
O O
O 1
SLEEVED IN EACH STEAM GENERATOR?
0 0
0 0
C.
WHAT llAVE BEEN THE TOTAL COSTS AND SPECIFICALLY REPLACEMENT POWER COSTS _A_SSOCIATED WITH STEAM GENERATOR MAINTENANCE.
REPAIR AND REPLACEMENT AT YOUR PLANT?
0 0
0 $270.000 D.
WHAT liAS BEEN THE TOTAL OCCUPATIONAL RADIATION EXPOSURE (IN PERSON-REMS) CAUSED BY STEAM GENERATOR MAINTENANCE?
0 0
0 0
REPAIR / REPLACEMENT 0
0 0
18 E.
WHAT PERCENTAGE OF TOTAL ANNUAL EMPLOYEE DOSE HAS BEEN ATTRIBUTABLE TO STEAM GENERATOR RELATED WORK AT iOUR SITE (S)?
0 0
0 4%
F.
DURING Tile YEARS IN QUESTION HOW MANY WORKERS HAVE RECEIVED MEASURABLE RADIATION DOSES FOR STEAM GENERATOR RELATED WORK?
0 O
O 153 WHAT PERCENTAGE OF Tile TOTAL WORKFORCE DO TiiESE WORKERS REPRESENT?
0 O
O 7%
G.
HOW MANY TEMPORARY WORKERS (DEFINED BY THE NRC AS ALL WORKERS OTilER TilAN THOSE IIIRED DIRECTLY BY NUCLEAR POWER PLANTS ON A CONVENTIONAL, LONG-TERM BASIS) RECEIVED DOSES FROM STEAM GENERATOR-RELATED WORK AT YOUR FACILITY EACII YEAR?
O O
O 83 11. WilAT PERCENTAGE OF TOTAL WORKERS INVOLVED WITil STEAM GENERATOR-RELATED WORK DO TEMPORARY WORKERS REPRESENT?
0 O
O 54%
Tile TOTAL WORKFORCE DO TEMPORARY WORKERS REPRESENT?
0 0
0 72%
- N L.! i iL 9E p.a,.e t ? ny 3 RESPONSE BY YEAR 1979 1980 1981 1982 I.
HAS YOUR COMPANY USED INDEPENDENT FIRMS TO FIND TEMPORARY EMPLOYEES WHO HAVE RECEIVED AN OCCUPATIONAL DOSE FROM STEAM GENERATOR-RELATED WORK?
NO NO NO YES J.
DO YOU ANTICIPATE MAJOR STEAM GENERATOR REPAIRS IN ANY OF YOUR UNITS IN Tile NEXT FIVE YEARS. AND IF SO HOW MUCH WOULD THESE REPAIR COSTS, PLEASE SPECIFY.
...............................N0
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s Generic Letter 82-22 Enclosure Page 3 of 3 Summary of Information Presented in NRC Steam Generator-Related-Questionaire A.
There has been one. outage attributed to steam generator-related difficulties. A small leak developed which did not require an l
immediate unscheduled outage.
The leak rate was within the allowable identified leakage rate as defined in the plant Tech-nical Specifications. A scheduled outage was planned for the repair of the leaking tube. The repair was successfully completed by plugging the leaking tube.
B.
One tube plugged during a 15 day outage which began August 27, 1982.
C.
This cost reflects labor charges cnd material charges attribu-table to direct Duquesne Light Company activities and expenses incurred through the Westinghouse Electric Corporation for the steam generator tube repair previously referenced. During the steam generator tube repair outage, it was not necessary to pur-chase replacement power.
D.
All occupatiotal radiation exposure is a result of the steam generator tube repair.
E.
No explanation necessary.
F.
The total work force is censidered as those individuals who are badged to work in a restricted area.
G.
No explanation necessary.
II.
Temporary workers are individuals not directly employed by the Duquesne Light Company. The total work force is considered as those individuals who are badged to work in a restricted area.
I.
The Westinghouse Electric Corporation provided individuals to support the steam generator tube repair effort. Additionally, there is an on-site contracted work force supplementing the Beaver Valley staf f which participated in the repairs. These are considered as temporary employees.
J.
No explanation necessary.
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