ML20202C261
| ML20202C261 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 01/25/1999 |
| From: | Andersen J NRC (Affiliation Not Assigned) |
| To: | Bowling M NORTHEAST NUCLEAR ENERGY CO. |
| References | |
| TAC-MA2035, NUDOCS 9901290358 | |
| Download: ML20202C261 (5) | |
Text
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January 25, 1999
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Mr. Martin L. Bowling, Jr.
Recovery Officer - Technical Services Northeast Nuclear Energy Company c/o Ms. Patricia A. Loftus Director-Regulatory Affairs P. O. Box 128 Waterford, CT 06385
SUBJECT:
MILLSTONE NUCLEAR POWER STATION, UNIT NO. 3 - REQUEST FOR 1
ADDITIONAL INFORMATION (TAC NO. MA2035) l
Dear Mr. Bowling:
In a June 6,1998, letter, Northeast Nuclear Energy Company requested a license amendment to revise the Millstone Unit 3 licensing basis related to operation of the supplementary leak collection and release system after a postulated acodent.
By letter dated August 20,1998, the staff requested additional information related to the human performance aspects of the amendment request.' As discussed with Dave Dodson of your staff on January 13,1999, the staff requires further information related to the radiological controls aspect of the amendment request to complete its review (see enclosure). A mutually agreeable target date of March 26,1999, for your response was established for both requests.
If circumstances result in the need to revise the target date, please call me at the earliest opportunity.
Sincerely,
)
original signed by-i James W. Andersen, Project Manager Project Directorate 1-2 Division of Reactor Projects - 1/11 i
Office of Nuclear Reactor Regulation Docket No. 50-423
Enclosure:
Request for AdditionalInformation cc w/ encl: See next page DISTRIBUTION
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January 25, 1999 Mr. Martin L Bowling, Jr.
l Recovery Officer - Technical Services
' Northeast Nuclear Energy Company c/o Ms. Patricia A. Loftus Director-Regulatory Affairs P. O. Box 128 Waterford, CT 06385
SUBJECT:
MILLSTONE NUCLEAR POWER STATION, UNIT NO. 3 - REQUEST FOR ADDITIONAL INFORMATION (TAC NO. MA2035)
Dear Mr. Bowling:
In a June 6,1998, letter, Northeast Nuclear Energy Company requested a license amendment to revise the Millstone Unit 3 licensing basis related to operation of the supplementary leak collection and release system after a postulated accident.
L By letter dated August 20,1998, the staff requested additionalinformation related to the human performance aspects of the amendment request. As discussed with Dave Dodson of your staff on January 13,1999, the staff requires further information related to the radiological controls aspect of the amendment request to complete its review (see enclosure). A mutually i
agreeable target date of March 26,19E3, for your response was established for both requests.
If circumstances result in the need to revise the target date, please call me at the earliest opportunity.
Sincerely, James W. Andersen, Project Manager Project Directorate 1-2 Division of Reactor Projects - t/II Office of Nuclear Reactor Regulation Docket No. 50-423
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Enclosure:
Request for AdditionalInformation cc w/ encl: See next page l
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(Millstone Nucle:r Power Station Unit 3 I
cc:
Lillian M. Cuoco, Esquire Mr. F. C. Rothen Senior Nuclear Counsel Vice President - Nuclear Work Services Northeast Utilities Service Company Northeast Utilities Service Company j
P. O. Box 270 P. O. Box 128 Hartford, CT 06141-0270 Waterford, CT 06385 Edward L. Wilds, Jr., Ph.D.
Emest C. Hadley, Esquire Director, Division of Radiation 1040 B Main Street Department of Environmental Protection P.O. Box 549 3
79 Elm Street West Wareham, MA 02576 Hartford, CT 06106-5127 Mr. John Buckingham i
Regional Administrator, Region i Department of Public Utility Control U.S. Nuclear Regulatory Commission Electric Unit 475 Allendale Road 10 Liberty Square King of Prussia, PA 19406 New Britain, CT 06051 First Selectmen Mr. James S. Robinson, Manager Town of Waterford Nuclear Investments and Administration 15 Rope Ferry Road New England Power Company Waterford, CT 06385 25 Research Drive Westborough, MA 01582 Mr. Wayne D. Lanning, Director Millstone inspections Mr. Raymond P. Necci j
Office of the Regional Administrator Vice President - Nuclear Oversight and 475 Allendale Road Regulatory Affairs i
King of Prussia, PA 19406-1415 Northeast Utilities Service Company P. O. Box 128 Mr. M. H. Brothers Waterford, CT 06385 Vice President-Millstone Operations Northeast Nuclear Energy Company Deborah Katz, President P.O. Box 128 Citizens Awareness Network Waterford, CT 06385 P.O. Box 83 Shelbume Falls, MA 03170 l
Mr. M. R. Scully, Executive Director Connecticut Municipal Electric Mr. Allan Johanson, Assistant Director Energy Cooperative Office of Policy and Management 30 Stott Avenue Policy Development and Planning i
Norwich, CT 06360 Division l
450 Capitol Avenue - MS# 52ERN l
Mr. John Carlin P. O. Box 341441 l
Vice President-Human Services Hartford, CT 06134-1441 Northeast Utilities Service Company P. O. Box 128 3
Waterford, CT 06385 t
T Citizens Regulatory Commission Millstone Nuclear Power Station ATTN: Ms. Susan Peny Luxton Unit 3 180 Great Neck Road Waterford, CT 06385 cc:
Ms. Terry Concannon Mr. William D. Meinert Co-Chair Nuclear Engineer Nuclear Energy Advisory Council Massachusetts Municipal Wholesale Room 4100 Electric Company Legislative Office Building P.O. Box 426 Capitol Avenue Ludlow, MA 01056 Hartford, CT 06106 Mr. Evan W. Woollacott Co-Chair Nuclear Energy Advisory Council 128 Terry's Plain Road Simsbury, CT 06070 Mr. John W. Beck, President Little Harbor Consultants, Inc.
Millstone -ITPOP Project Office P.O. Box 0630 Niantic, CT 06357-0630 Mr. Leon J. Olivier Chief Nuclear Officer-Millstone
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Northeast Nuclear Energy. Company P.O. Box 128 Waterford, CT 06385 Mr. Chris Schwarz Station Director Northeast Nuclear Energy Company P.O. Box 128 Waterford, CT 06385 Senior Resident inspector Millstone Nuclear Power Station c/o U.S. Nuclear Regulatory Commission P. O. Box 513 Niantic, CT 06357 Nicholas J. Scobbo, Jr., Esquire Ferriter, Scobbo, Caruso, & Rodophele, P.C.
75 State Street,7th Floor Boston, MA 0210
i REQUEST FOR ADDITIONAL INFORMATION MILLSTONE NUCLEAR POWER STATION. UNIT 3 DOCKET NO. 50-423
- 1. In the June 6,1998, submittal, some of the X/Q values are being revised and additional values added related to the supplemental leak collection and release system (SLCRS) bypass leakage. What is the technical basis for these changes?
- 2. How were the SLCRS bypass leakage rates determined?
- 3. Which set of X/Q's were used in the dose calculations for the exclusion area boundary (EAB), low population zone, and control room?
- 4. In the letter dated June 6,1998, the notes to Table 15.0-8 report an EAB gamma dose for the rod ejection accident and EAB gamma and thyroid doses for the loss-of-coolant accident (LOCA) that are lower than the previous analysis. Considering that this submittal relates to identification of an additionalleakage pathway, explain the above results.
- 5. In the markup for Final Safety Analysis Report (FSAR) Table 15.6-9, insert G, item 15 lists mixing rates for unsprayed to sprayed regions of the containment. What are the units?
How were these mixing rates determined?
- 31) of the submittal appears to reduce, from 230 cubic feet per minute (cfm) to 115 cfm, the control room unfiltered inleakage rate during the 40 minute period after pressurization, but before filtered air intake. How was this inleakage rate determined and what is the basis for this change?
- 7. Do all LOCA doses includa the contribution from refueling water storage tank backleakage as discussed in the Millstone Unit 3, May 7,1998, submittal (B17211)?
- 8. The Millstone Unit 3 FSAR states that the basic Regulatory Guides 1.145 and 1.3, and Murphy-Campe methodologies were used in calculation of the X/Q values for offsite and control room dose assessments, respectively. FSAR Tables 2.3-3 and 15.6-12 provide information concoming the distance between some of the postulated release points and receptor locations. What other specific inputs and assumptions were used in making each of the X/Q calculations? Provide information, including meteorological data, sufficient to perform confirmatory calculations. If hourly meteorological data are provided, it should be submitted on a magnetic media as described in Appendix A, " Standard Format for Houriy Meteorological Data," to draft NUREG-1555,
- Environmental Standard Review Plan,'
(August 1997). Include figures showing details such as heights of release points with respect to plant structures and receptorlocations. Describe the basis for selection of the inputs and assumptions, including verifications performed to assure that the meteorological data are representative of the site (e.g., free from obstructions or other localized effects) and long term conditions (e.g., plant lifetime).
- 9. The 8-24 hour X/Q values are different for the technical support center and the control room intaka, while values for the other time periods are the same. What is the cause of this difference?
ENCLOSURE
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