ML20135B282
| ML20135B282 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 02/26/1997 |
| From: | Chandu Patel NRC (Affiliation Not Assigned) |
| To: | Dugger C ENTERGY OPERATIONS, INC. |
| References | |
| TAC-M91296, NUDOCS 9702280159 | |
| Download: ML20135B282 (4) | |
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' Fatiruary 26,'1997I 4
Mr. Charles M. Dugger t.
Vice President Operations Entergy Operations, Inc.
P. O. Box B l.; e J,
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K111ona,.LA 70066 REQUESTFORADDITIONAL'INFORMATIONREGARDINGsTHEiCHhNGEINTECHNICAL
SUBJECT:
SPECIFICATION REQUIREMENT'FOR' MODERATOR TEMPERATURE'C0 EFFICIENT AT WATERFORD STEAM ELECTRIC STATION, UNIT'3'(TAC NO. M91296)-
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Dear Mr. Dugger:
The Nuclear Regulatory Commission (NRC) staff is reviewing your_ request for
~i changing the' requirements to perform a Moderator Temperature Coefficient (MTC)
- test near the end of cycle submitted by your letter dated December 9,1994.
This request submitted CEN NPSD-911, " Analysis of Moderator Temperature
. Coefficients in Support of a Change in The Technical Specification End of Cycle Negative MTC Limit", dated May 1993. As discussed in the enclosure, 1
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additional information is required from Entergy Operations, Inc., in order for
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the staff to complete its review.
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We request.that you provide response within 45 days from the date'of this letter.
If you have any questions, please call me.
i Sincerely,
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ORIGINAL SIGNED BY:
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Chandu P. Patel, Project Manager j
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Project Directorate IV-1 Division of Reactor Projects III/IV Office of Nuclear Reactor Regulation i
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Docket No. 50-382
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Enclosure:
Request for Additional Information cc w/ enc 1:
See next page j
4 DISTRIBUTION:
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OFFICIAL RECORD C0 7 n
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9702280159 970226 r
PDR ADOCK 05000382 i
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UNITED STATES g
j NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 30666 4001
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February 26, 199 l
Mr. Charles M. Dugger Vice President Operations Entergy Operations, Inc.
P. O. Box B Killona, LA 10066 j
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION REGARDING THE CHANGE IN TECHNICAL SPECIFICATION REQUIREMENT FOR MODERATOR TEMPERATURE COEFFICIENT AT WATERFORD STEAM ELECTRIC STATION, UNIT 3 (TAC NO. M91296)
Dear Mr. Dugger:
The Nuclear Regulatory Commission (NRC) staff is reviewing your request for changing the requirements to perform a Moderator Temperature Coefficient (MTC) test near the end of cycle submitted by your letter dated December 9,1994.
This request submitted CEN NPSD-911, " Analysis of Moderator Temperature Coefficients in Support of a Change in The Technical Specification End of Cycle Negative MTC Limit", dated May 1993. As discussed in the enclosure, additional information is required from Entergy Operations, Inc., in order for the staff to complete its review.
We request that you provide response within 45 days from the date of this letter.
If you have any questions,- please call me.
Sincerely, f.f M
Chandu P. Patel, Project Manager i
Project Directorate IV-1 Division of Reacter Projects III/IV 4
Office of Nuclear Reactor Regulation Docket No. 50-382
Enclosure:
Request for Additional Information cc w/ encl: See next page
l
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Mr. Charles M. Dugger Entergy Operations, Inc.
Waterford 3 l
cc:
Administrator Regional Administrator, Region IV Louisiana Radiation Protection Division U.S. Nuclear Regulatory Comission Post Office Box 82135 611 Ryan Plaza Drive, Suite 1000 Baton Rouge, LA 70884-2135 Arlington, TX 76011 i
Vice President, Operations Resident Inspector /Waterford NPS Support Post Office Box 822 4
Entergy Operations, Inc.
.,Killona, LA 70066 4
P. O. Box 31995 Jackson, MS 39286 Parish President Council St. Charles Parish Director P. O. Box 302 Nuclear Safety & Regulatory Affairs Hahnv111e, LA 70057 Entergy Operations, Inc.
P. O. Box B Executive Vice-President Killona, LA 70066 and Chief Operating Officer Entergy Operations, Inc.
Wise, Carter, Child & Caraway P. O. Box 31995 P. O. Box 651 Jackson, MS 39286-1995 l
Jackson, MS 39205 Chairman General Manager Plant Operations Louisiana Public Service Commission Entergy Operations, Inc.
One American Place, Suite 1630 P. O. Box B Baton Rouge, LA 70825-1697 Killona, LA 70066 Licensing Manager Entergy Operations, Inc.
P. O. Box B K111ona, LA 70066 j
Winston & Strawn 1400 L Street, N.W.
Washington, DC 20005-3502 1
4 4
REQUEST FOR INFORMATION WATERFORD STEAM ELECTRIC STATION, UNIT 3 Questions on CE NPSD 911 - Analysis of Moderator Temperature Coefficients in Support of a Change in the Technical Specification End of Cycle Negative MTC Limit 1.'+
What met $odology is used for calculating MTC?
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2.
Has this methodology changed since the data analysis presented in the report? If yes, please explain changes and effect of these changes?
i 3.
Is only the methodology referenced in answering question 1 involved or 3
are there more than one methodologies involved?
4.
Will Combustion Engineering perform the calculations in all cases or
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i will the utilities perform them in some cases? If utilities perform the calculations, what codes will they be using?
5.
Assuming that Combustion Engineering has performed all the calculations, j
why is there not more data? In addition please supply all additional l
data obtained since the report was prepared (Update Table I to include all data available).
]
6.
In examining the data on Table 1, it appears that there are only a small number of sets (consisting of 3 measurements - a BOC, zero power measurement; a BOC, full power measurement; and a near EOC full power 1
i measurement) of data. Why is this the case?
7.
From the data in Table 1, tnere are only 5 cases in which all three i
measurements fall within the acceptance criteria.
Please discuss why this would be sufficient.
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ENCLOSURE