ML20058F576
| ML20058F576 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 07/20/1982 |
| From: | Tam P Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| TAC-48510, NUDOCS 8207300572 | |
| Download: ML20058F576 (4) | |
Text
e JUL 2 0 1982 Docket No. 50-334 LICENSEE:
Duquesne Light Company FACILITY:
Beaver Valley Power Station Unit 1
SUMMARY
OF MEETING HELD ON JULY 13, 1982 WITH THE LICENSEE ANDkWESTINGHOUSE TO DISCUSS ACCURACY OF CONTROL R00 POSITION INDICATION The subject meeting was held pursuant to a requirement stated in Amendment 52 of the Unit's Operating License. Amendment 52 grants a waiver of the requirement that rod position indication be within i 12 steps of rod demand.
The reason of the waiver was that observed discrepancy between demand and position indication was actually greater than 12 steps.
The licensee (0, Sieber and K. Grada) and Westinghouse (C. Geis) described the construction and electronic circuitry of the analog position indication used at Beaver Valley. Based on Westinghouse test results, position indi-cation inaccuracy can be caused by temperature changes, reactor power changes, rod motion, shroud cooling and magnetic cross coupling of the indicator coil.
(See attacinent for details).
It was pointed out that such inaccuracies are inherent in the present analog system.
Since digital systems (such as that for Farley) do not seem to have such inaccuracies, standard Tech Spec requirement for accuracy does not seem unreasonable. The licensee thus questions the reasonableness of imposing the same standard Tech Spec on analog systems.
NRC participants indicated that a lot of the information presented by Westinghouse was previously unavailable.
It was general concensus that if such information were available, the staff would have issued Amendment 51 (which requires position indication accuracy) in a different form.
After a caucus, the NRC participants informed the licensee and Westinghouse that the present Tech Spec requirement on position indication accuracy would be relaxed, pending agreement by all review branches and management on the form of relaxation to be granted. The staff requested that the technical information presented in the meeting be expanded and presented in a technical report, to be submitted no later than September 30,1982.
b Peter S. Tam, Proejct Manager 8207300572 8207po Operating Reactors Branch Ho. 1 PDR ADOCK 05000334 Division of Licensing P
PDR Attachments:
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Mr. J. J. Carey Duquesne Light Company cc: Mr. H. P. Williams Mr. J. D. Sieber, Manag'er Station Superintendent Nuclear Safbty and Licensing Duquesne Light Company Duquesne Light Company Beaver Valley Power Station Nuclear Division Post Office Box 4 Post Office Box 4 shippingport, Pennsylvania 15077 Shippingport, Pennsylvania 15077 Mr. T. D. Jones, Manager Resident Inspector Nuclear Operations
- 11. S. Nuclear Regulatory Commission Duquesne Light Company Post Office Box 298 Post Office Box 4 Shippingport, Pennsylvania 15077 Shippingport, Pennsylvania 15077 Ronald C. Haynes B. F. Jones. Memorial Library Regional Administrator - Region I U. S. Nuclear Regulatory Commission 663 Franklin Avenue Aliouippa, Pennsylvania 15001 631 Park Avenue King of Prussia, Pennsylvania 19406 Gerald Charnoff, Escuire Jay E. Silberg, Esquire Mr. Kenny Grada Shaw, Pittman, Potts and Trowbridge Supervisor of Licensing 1800 M Street, N.W.
Beaver Valley Power Station Washington, D.C.
20036 Duquesne Light Company P.O. Box 4 Karin Carter, Esquire Shippingport, PA 150/7 Special. Assistant Attorney General Bureau of Administrative Enforcement 5th Floor, Executive House Harrisburg, Pennsylvania 17120 Marvin Fein Utility Counsel City of Pittsbur.ph 313 City-County Building Pittsburgh, Pennsylvania 15219 Mr. John A. Levin Public Utility Commission P.O. Box 3265 Harrisburg, Pennsylvania 17120 Irwin A. Dopowsky, Esquire Of fice of Consumer Advocate 1425 Strawberry Square Harrisburg, Pennsylvania 17120 Charles A. Thomas, Esquire Thomas and Thomas 212 Locust Street Cox 999 Harrisburg, Pennsylvania 1
i
w, BEAVER VALLEY UNIT 1 MTETING ON R0D POSITION INDICATION ATTENDEES LIST Name Organizat' ion Phone -
Address Peter Tam NRC/0RB 1 492-8423 John Sieber Duquesne Light 412-643-5502 Kenneth D. Grada Duquesne Light 412-643-5500 Chuck Geis Westinghouse 412-733-6267 Joe Jenkins Westinghouse 412-928-3197 C. R. Tuley Westinghcuse 412-373-4172 David N. Kate Westinghouse 412-733-6687 Charles Petrone NRC/ Region I 337-5293 Carl Stable NRC/LB 2 492-7317 Bill Ross NRC/0RB 1 492-7829 Rudy Karsch NRR/ICSB 492-7589 Matt Chiramal NRC/AEB 492-4442 John Riesland NNC 762-9582 M. Dunenfeld NRC/CPB Wargaret Chatterton NRC/CPB 492-9466 J. T. Beard NRC/0RAB
' 492-7465 J. E. Rosenthal-NRC/ICSB 492-9459 Tom Dunning NRC/ICSB Carl H. Berlinger NRC/CPB 492-7456 i
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I MEETING
SUMMARY
DISTRIBUTION OPERATING REACTORS BRANCH NO.1 L'l e
'y771t di +n i g 5 Docket / Central File '~~'~
NRC PDR Local PDR ORB #1 Rdg J. Heltemes. AEOD B. Grimes (Emergency Preparedness)
S. Varga Project Manager OELD OI&E-1 ACRS-10 NRC Participants cc: Licensee w/short cc list
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