ML20206Q342
| ML20206Q342 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 08/26/1986 |
| From: | Mckenna E Office of Nuclear Reactor Regulation |
| To: | Papanic G YANKEE ATOMIC ELECTRIC CO. |
| References | |
| REF-GTECI-A-49, REF-GTECI-RV, TASK-A-49, TASK-OR NUDOCS 8609040367 | |
| Download: ML20206Q342 (4) | |
Text
T' Docket No.50-029 gg 2, 6 Mr. George Papanic, Jr.
Senior Project Engineer-Licensing Yankee Atomic Electric Company 1671 Worcester Road Framingham, Massachusetts 01701
Dear Mr. Papanic:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION-FAST NEUTRON FLUENCE FOR THE REACTOR VESSEL Re: Yankee Nuclear Power Station By letter dated January 22, 1986, Yankee Atomic Electric Company (YAEC) submitted information on the fast neutron fluence for the reactor vessel, in accordance with the requirements of 10 CFR 50.61.
Based on our review of your submittal, the staff has developed the enclosed request for additional information. Your response is requested within 60 days of receipt of this letter.
The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.
Eileen M. McKenna, Project Manager Project Directorate #1 Division of PWR Licensing-A
Enclosure:
As stated cc: w/
Enclosure:
See Next Page Office:
P g yf PD/ PAD #1 Surname:
EMcKenna/lp Glear Date:
08/g/86 08g86 kDR hohK05000029 7 860826 p
T' Mr'.' George Papanic, Jr.
Yankee Atomic Electric Company Yankee Nuclear Power Station cc:Mr. James E. Tribble, President Yankee Atomic Electric Company 1671 Worcester Road Framingham, Massachusetts 01701 Thomas Dignan, Esquire Ropes and Gray 225 Franklin Street Boston, Massachusetts 02110 Mr. N. N. St. Laurent Plant Superintendent Yankee Atomic Electric Company Star Route Rowe, Massachusetts 01367 Chairman Board of Selectmen Town of Rowe Rowe, Massachusetts 01367 Resident Inspector Yankee Nuclear Power Station c/o U.S. NRC Post Office Box 28 Monroe Bridge, Massachusetts 01350 Regional Administrator, Region I U.S. Nuclear Regulatory Comission 631 Park Avenue King of Prussia, Pennsylvania 19406 Robert M. Hallisey, Director Radiation Control Program Massachusetts Department of Public Health 150 Tremont Street, 7th Floor Boston, Massachusetts 02111
1P 3
REQUEST FOR ADDITIONAL INFORMATION FOR YANKEE R0WE, FAST NEUTRON FLUENCE FOR THE PRESSURE VESSEL, 10 CFR 50.61 (TAC N0. 59997)
The values of the fluence for the estimation of the RT are based on the "AnalysisofFastNeutronFluxLevelsandEnd-of-LifeSIhosurefortheYankee Rowe Reactor Pressure Vessel" by S. Anderson March 1981.
1.
The D3T analysis is based on the Pi scattering approximation which is known to result in non conservative answers. Please justify the use of the P scattering approximation.
y 2.
The cross sections used were not basad on the generally accepted ENDF/8-IV or V set of cross sections. Please justify the use of the cross sections.
3.
Reactor core power distributions were based on cycles XII-XV. However, there is no discussion for the exposure resulting from Cycles I-XI nor are there any assumptions stated for the exposure from future cycles.
Please clarify.
4.
The " Adequacy of the Analytical Method" as described is not equivalent to a benchmark. The comparisons are not based on laboratory type of measurements and there is no quantification of the expected uncertainty.
Please clarify.
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4 Distribution Copies:
iDocket-.No. 50-029~
NRC PDR Local PDR PAD #1 r/f PAD #1 p/f TNovak, Actg. DD NThompson, DHFT OGC-Bethesda EJordan BGrimes JPartlow EMcKenna CBerlinger Glear PShuttleworth ACRS (10)
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