ML20036B948
| ML20036B948 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 05/27/1993 |
| From: | Vissing G Office of Nuclear Reactor Regulation |
| To: | Opeka J CONNECTICUT YANKEE ATOMIC POWER CO., NORTHEAST NUCLEAR ENERGY CO. |
| References | |
| TAC-M86361, NUDOCS 9306070225 | |
| Download: ML20036B948 (5) | |
Text
h May 27, 1993 Docket No. 50-336 Mr. John F. Opeka Executive Vice President, Nuclear Connecticut Yankee Atomic Power Company Northeast Nuclear Energy Company Post Office Box 270 Hartford, Connecticut 06141-0270
Dear Mr. Opeka:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION CONCERNING TECHNICAL SPECIFICATIONS FOR SPENT FUEL STORAGE POOL MODIFICATIONS -
MILLSTONE 2 (TAC N0. M86361)
In our review of your application for amendment dated May 14, 1993, concerning the technical specifications related to the proposed modification of the Millstone 2 Spent Fuel Storage Pool, we have identified the need for additional information.
The enclosure provides details concerning the information that is needed.
Since we are delaying issuance of the Federal Reaister notice until we have information such as. hat which is requested, we request a quick response.
The requirements contained in this letter affects fewer than 10 respondents and, therefore, is not subject to Office of Management and Budget review under P.L.96-511.
Sincerely, Original signed by:
Guy S. Vissing, Senior Project Manager Project Directorate I-4 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Enclosure:
Request for Additional Information cc w/ enclosures:
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- nao UNITED STATES NUCLEAR REGULATORY COMMISSION -
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- ..+f May 27,1993
- i Docket No. 50-336 Mr. John F. Opeka Executive Vice President, Nuclear Connecticut Yankee Atomic Power Company Northeast Nuclear Energy Company Post Office Box 270 - Hartford, Connecticut 06141-0270
Dear Mr. Opeka:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION CONCERNING TECHNICAL ~ SPECIFICATIONS FOR SPENT FUEL STORAGE POOL MODIFICATIONS - MILLSTONE 2 (TAC NO. M86361) In our review of your application for amendment dated May 14, 1993, concerning. the technical specifications related to; the proposed modification of the. Millstone 2 Spent Fuel Storage Pool, we have-identified.the-need for ' additional information. The enclosure provides details concerning the. information that is needed. Since we are delaying issuance of the Federal Reoister notice until we have information such as that which is requested, we request a quick response. The requirements contained in this letter affects fewer than 10 respondents and, therefore, is not subject to Office of Management and Budget review under.- P.L. 96-511. Sincerely, GuyT. Vissing, Serfior Project Manager Project Directorate-I-4 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation' inclosure: Request for Additional Information cc w/ enclosures: See next page .r
i} Distribution: Docket File NRC & Local PDRs - PD I-4 Plant SVarga JCalvo-SNorris~ GVissing-OGC ACRS'(10) 'I i
a. 3 / Mr. John F. Opeka Millstone Nuclear Power Station Northeast Nuclear Energy company Unit 2 cc: Gerald Garfield, Esquire R. M. Kacich, Director Day, Berry and Howard Nuclear Licensing Counselors at Law Northeast Utilities Service Company City Place Post Office Box 270 Hartford, Connecticut.06103-3499 Hartford, Connecticut 06141-0270 W. D. Romberg, Vice President J. P. Stetz, Vice President Nuclear Operations Services Haddam Neck Plant Northeast Utilities Service Con. par.y Connecticut Yankee Atomic Power Company Post Office Box 270 362 Injun Hollow Road Hartford, Connecticut 06141-0270 East Hampton, Connecticut 06424-3099 Kevin McCarthy, Director Regional Administrator Radiation Control Unit Region 1 Department of Environmental Protection U.S. Nuclear Regulatory Commission State Office Building 475 Allendale Road Hartford, Connecticut 06106 King of Prussia, Pennsylvania 19406 Allan Johanson, Assistant Director First Selectmen Office of Policy and Development Town of Waterford Policy Development & Planning Division Hall of Records 80 Washington Street 200 Boston Post Road Hartford, Connecticut 06106 Waterford, Connecticut'06385 S. E. Scace, Vice President P. D. Swetland, Resident Inspector Millstone Nuclear Power Station Hillstone Nuclear Power Station Northeast Nuclear Energy Company c/o U.S. Nuclear Regulatory Commission Post Office Box 128 Post Office Box 513 Waterford, Connecticut 06385 Niantic, Connecticut 06357 J. S. Keenan, Nuclear Unit Director Charles Brinkman, Manager Millstone Unit No. 2 Washington Nuclear Operations Northeast Nuclear Energy Company ABB Combustion Engineering Post Office Box 128 Nuclear Power Waterford, Connecticut 06385 12300 Twinbrook Pkwy, Suite 330 Rockville, Maryland 20852 Nicholas S. Reynolds Winston & Strawn G. H. Bouchard, Director 1400 L Street, NW Nuclear Quality Services Washington, DC 20005-3502 Northeast Utilities Service Company Post Office Box 270 Hartford, Connecticut 06141-0270
- 3:q / Enclosure Recuest for Additional Information Millstone Unit 2 Spent Fuel Storace Pool Modifications Docket No. 50-336 1. For Region C, a normal maximum temperature was taken as 150' F. What was the highest accident spent fuel pool temperature assumed in criticality analysis for Region C? 2. Which specific calculations were performed with CASM0-3 and which were performed with NITAWL-KENO-5.a? If both codes were used for a given spent fuel pool configuration, how did their results compare? -{ 3. How many neutron histories were used in each of the KENO-5.a calculations? 4. Describe the physical mechanism that makes the poison pins an integral part of the fuel assembly such that they cannot be accidentally removed. 5. Describe the procedural controls in place to determine if poison pins are required and to prevent the misloading of the poison pins? l 6. What is the approximate reactivity decrease in a Region C-fuel assembly due to the insertion of three poison pins? 7. Please provide a copy of the Holtec Criticality Safety Evaluation for Rodlets referenced in Section 1.5 of Attachment 5 to your May 14, 1993 amendmeh; request. l l l~ - _ _ - _ _ _ - _ _ - - - _ _ _ _ _ _ _ _ -}}