ML20009E337
| ML20009E337 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 07/24/1981 |
| From: | Metevia W Maine Yankee |
| To: | Clark R Office of Nuclear Reactor Regulation |
| References | |
| FMY-81-110, NUDOCS 8107280057 | |
| Download: ML20009E337 (1) | |
Text
{{#Wiki_filter:gA%g EMM ]HAllHEE 'ATOMWPGWER COMPA09 * ,s,, woncessen noAo 8 ENGINEERING OFFICE FRAMINGH AM, M ASSACHUSETTS c17o1 Os s17.s72 8100 p
- c. ::::ayr- > O 2.C.2.1 FMY 81-110 July 24. 1981 f
fIh United States Nuclear Regulatory Commission G /j. Washington, D. C. 20555 Atten tion : Office of Nuclear Reactor Regulation .gl g 2 7198 -{ " g asaugl m Division of Licensing Operating Reactors Branch #3 M Mr. Robert A. Clark, Chief 9 /
References:
(a) License No. DPR-36 (Docket No. 50-309) / (b) Letter to USNRC from MYAPC, FMY 81-93, June 1 92 Sub ject : Cycle 6 Startup Physics Testing
Dear Sir:
This letter documents our telecon with Mr. Requa of your staff on July 23 in which we provided the following information: The Startup Test Program requirements include INCA tilt monitoring with power escalation from 5-48% power. The criteria requires the tilt trend to an acceptable range (less than 3%) at 50% power, providing confidence in the syumetry of core operation. At approximately 30% power operation, computer problems developed which precluded INCA tilt monitoring. The tilt had trended to the 2.7-3.0% range by the 30% power level. Such tilt behavior was typical of previous cycles. The tilt has typically stabilized with further power level escalation. As an alternative to INCA tilt monitoring, confidence in the tilt behavior will be obtained by monitoring changes in the RPS excore detector indications. As such, any significant changas in tilt trending may be identified. If you have any questions, please contact us. Very truly yours, MAINE YANKEE ATOMI POWER COMPANY W. J. Metevia Senior Project Engineer WJM/kab 4 8107280057 810724 PDR ADOCK 05000309 l,9g d I P PDR}}