ML20041G301
| ML20041G301 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 03/16/1982 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Lundvall A BALTIMORE GAS & ELECTRIC CO. |
| References | |
| NUDOCS 8203220027 | |
| Download: ML20041G301 (3) | |
Text
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MAR 161962
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DISTRIBUTI0f:
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flRC-PDR' L PDR Docket Nos. 50-317 tJSIC f
and 50-318 ORB #3 Rdg g.
DEisenhut 3
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o Mr. A. E. Lunt'vall, Jr.
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N- 000* i Vice President - Supply ACRS-10
$$li'[0,!jdS?7 /T Baltimore Gas & Electric Company PMKreutzer-3 b.
'ac P. O. Box 1475 RAClark Qf Baltinore, Maryland 21203 DJaffe nrrdy Gray File O'
Dear Mr. Lundvall:
We are in the process of reviewing the Calvert Cliffs Unit 1, Cycle 6, "
" Phase II" submittal which was transmitted to us via letter dated Feb-ruary 17, 1982.
In the course of this review, we have found it necessary to request additional information. Please provide your response to the enclosed request for information within thirty (30) days from the date of this letter.
OMB clearance is not required under P.L.96-511 for this request since it is being transmitted to fewer than ten addressees.
Sincerely, Original c!gned by neart A. Clark Robert A. Clark, Chief Operating Reactors Branch #3 Division of Licensing l
Enclosure:
l Request for Additional l
Information cc: See next page i
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PDR ADOCK 05000317
_IC. AL RECORD COPY usom a i-mm emc.." P PDR
Baltimore Gas and Electric Company cc:
James A. Biddison, Jr.
Ms. Mary Harrison, President General Counsel Calvert County Board of County Commissioners Baltimore Gas and Electric Company Prince Frederick, MD 20768 P. O. Box 1475
, Baltimore, MD 21203 U. S. Environmental Protection Agency Region III Office George F. Trowbridge, Esquire Attn: Regional Radiation Representative Shaw, Pittman, Potts and Trowbridge Curtis Building (Sixth Floor) 1800 M Street, N. W.
Sixth and Walnut Streets Washington, D. C.
20036 Philadelphia, PA 19106 Mr. R. C. L. Olson, Principal Engineer Mr. Ralph E. Architzel Nuclear Licensing Analysis Unit Resident Reactor Ir.spector Baltimore Gas and Electric Company NRC Inspection and Enforcement Room 922 - G&E Building P. O. Bos 437 P. O. Box 1475 Lusby, MD 20657 Baltimore, MD 21203 Mr. Charles B. Brinkman Mr. Leon B. Russell Manager - Washington Nuclear Operations Plant Superintendent Combustion Engineering, Inc.
Calvert Cliffs Nuclear Power Plant 4853 Cordell Avenue, Suite A-1 Maryland Routes 2 & 4 Bethesda, MD 20014 Lusby, MD 20657 Mr. J. A. Tierman, Manager Bechtel Power Corporation Nuclear Power Department Attn: Mr. J. C. Judd Calvert Cliffs Nuclear Power Plant Chief Nuclear Engineer Maryland Routes 2 & 4 15740 Shady Grove Road Lusby, MD 20657 Gaithersburg, MD 20760 Mr. W. J. Lippold, Supervisor Combustion Engineering, Inc.
Nuclear Fuel Management Attn: Mr. P. W. Kruse, Manager Baltimore Gas and Electric Company Engineering Services Calvert Cliffs Nuclear Power Plant P. O. Box 500 P. O. Box 1475 Mindsor, CT 06095 Baltimore, Maryland 21203 Public Document Room Mr. R. E. Denton, General Supervisor Calvert County Library Training & Technical Services Prince Frederick, MD 20678 Calvert Cliffs Nuclear Power Plant Maryland Routes 2 & 4 Director, Department of State Plannin9 Lusby, MD 20657 301 West Preston Street l
Baltimore, MD 21201 Mr. R. M. Douglass, Manager Quality Assurance Department l
Fort Smallwood Road Complex Administrator, Power Plant Siting Program Energy and Coastal Zone Administration l
P. O. Box 1475' Department of Natural Resources Bal timore, MD 27203 Tawes State Office Building Mr. T. L. Syndor, General Supervisor Operations Quality Assurance l
Calvert Cliffs Nuclear Power Plant Regional Administrator
'I Maryland Routes 2 & 4 Nuclear Regulatory Commission, Region I Lusby, MD 20657 Office of Executive 01 rector for Operations 631 Park Avenue King of Prussia, Pennsylvania 19406 l
Request For Additional Information For Calvert Cliffs Unit 1 Cycle 6 NUCLEAR DESIGN 1.
Does the use of the DIT computer code to generate cross sections for PDQ calculations of local power peaking eliminate the need for bias factor applied in previous reloads to account for increased pin power peaking near waterholes?
2.
Will Cycle 6 be operated with a 4-step CEA insertion allowance?
If so, do axial peaking factors and CEA worth calculations account for this?
3.
Table 5-2 specifying the limiting values of reactivity worths and allowances is confusing.
It is not in the same format as for the previous cycle and it is not clear how the total CEA worths for.
the reference cycle and Cycle 6 were obtained.
Explain in more detail the precise core conditions assumed for the calculation of the worth of all CEAs inserted (line 1).
In particular, include the assumed power level, boron concentration, average core tempera-ture, and r..oderator void distribution. Explain the reason for the difference in zero power dependent insertion limit CEA bite between Cycle 6 and Cycle 5.
TECH SPEC CHANGES 4.
Explain in more detail the changes which have resulted in the revised Fig. 3.2-2 for Linear Heat Rate Axial Flux Offset Control limits. Justify the increase in allowable rated therral power to 100" between ASI's of.06 and +.12.
(T. S. Change #7).
5.
Explain in more detail the reascn for the addition of T. S. f3.2.2.2.
How was Fig. 3.2-3b derived? (T. S. Change #14).
.