ML20155A517
| ML20155A517 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 10/23/1998 |
| From: | Andersen J NRC (Affiliation Not Assigned) |
| To: | Bowling M NORTHEAST NUCLEAR ENERGY CO. |
| References | |
| TAC-MA3372, NUDOCS 9810290157 | |
| Download: ML20155A517 (6) | |
Text
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October 23, 1998 l-Mr. Martin L. Bowling, Jr.
Recovery Officer - Technical Services Northeast Nuclear Energy Company clo Ms. Patricia A. Loftus Director-Regulatory Affairs P. O. Box 128
. Waterford, Connecticut 06385
SUBJECT:
MILLSTONE NUCLEAR POWER STATION, UNIT 3 - REQUEST FOR ADDITIONAL INFORMATION (TAC NO. MA3372) 1 l
Dear Mr. Bowling:
i l
in a June 16,1998, letter, Sargent & Lundy documented two discrepancy reports, DR-MP3-0514 and 0580, which raised issues related to the adequacy of the licensing basis of Millstone Unit 3, rather than Northeast Utilities' compliance with the Millstone Unit 3 licensing basis. In order for the staff to complete its review of the issues, additionalinformation is required.
The enclosed request was discussed with Mr. David Dodson of your staff on October 16,1998.
A mutually agreeable target date of November 30,1998, for your response was established. If j
circumstances result in the need to revise the target date, please call me at the earliest i
opportunity.
Sincerely, Original signed by D. Mcdonald for:
James W. Andersen, Project Manager Millstone Project Directorate Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket No. 50-423
Enclosure:
Request for Additional Information cc w/ encl: See next page DISTRIBUTION:
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/g WASHINGTON. D.C. 20666 4 001 October 23, 1998 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, Connecticut 06385
SUBJECT:
MILLSTONE NUCLEAR POWER STATION, UNIT 3 - REQUEST FOR ADDITIONAL INFORMATION (TAC NO. MA3372)
Dear Mr. Bowling:
In a June 16,1998, letter, Sargent & Lundy documented two discrepancy reports, DR-MP3-0514 and 0580, which raised issues related to the adequacy of the licensing basis of Millstone Unit 3, rather than Northeast Utilities' compliance with the Millstone Unit 3 licensing basis. ;n order for the staff to complete its review of the issues, additionalinformation is required.
The enclosed request was discussed with Mr. David Dodson of your staff on October 16,1998.
A mutually agreeable target date of November 30,1998, for your response was established. If circumstances result in the need to revise the target date, please call me at the earliest opportunity.
Sincerely,
- e....
M James W. Andersen, Project Manager Millstone Project Directorate Division of Reactor Projects - 1/II Office of Nuclear Reactor Regulation Docket No. 50-423
Enclosure:
Request for Additional Information cc w/er'al: See next page
.m REQUEST FOR ADDITIONAL INFORMATION MILLSTONE NUCLEAR POWER STATION. UNIT 3 DOCKET NO. 50-423 i
1.
In the safety evaluation supporting License Amendment No. 87, page 7, the staff stated that:
The licensee now notes, in the " Bases" for TS (Technical Specification]
3.4.6.6.1.d that this change is made "In order to ensure a negative pressure in all areas inside the secondary containment boundary under most meteorological conditions, the negative pressure acceptance criteria at the measured location is 0.4 inches water gauge (WG)." The licensee goes on to state, "It is recognized that there will be an occasional meteorological condition under which slightly positive pressure may exist at some localized portions of the boundary (e.g., the upper elevations on the down wind side of a building). For example, a very low outside temperature combined with a moderate wind speed could cause a slightly positive pressure at the upper elevations of the containment enclosure building on the leeward face. The probability of occurrence of meteorological conditions which could result in such a positive differential pressure condition in the upper levels of the enclosure building has been estimated to be less than 2% of the time.
The ctaff further stated on page 7:
The licensee has conducted four tests with the new equipment setup to simulate winter (2 tests) and summer (2 tests). The staff reviewed these tests and determined that the subatmospheric pressure in all areas controlled by SLCRS
[ supplementary leak collection and release system] was reduced to a value below that desired (-0.4-inch WG) within the 120-second period. These tests also indicated that the value attained at the 24-feet,6-inch level in the auxiliary building was higher (less negative) than or approximately equivalent to that in the other buildings.
In the Sargent & Lundy (S&L) letter dated June 16,1998, DR MP3-0514 raises the concem that the single point differential measurement in the auxiliary building is not representative of the containment enclosure differential pressure in all cases. The S&L letter specifically discusses the main steam valve building. Please address S&L's comment (No. 2) under the " Comments on Second and Supplemental Responses" section. Is the single testing location (24-feet,6-inch elevation in the auxiliary building) still considered adequate and representative of the entire secondary containment as discussed in Final Safety Analysis Report (FSAR) Section 6.2.3.3?
Enclosure l
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. 2.
FSAR Section 6.2.3.3 states that the surveillance verifies that one train of SLCRS in conjunction with the auxiliary building filtration system will produce a negative pressure of
-0.4-inch WG at the auxiliary building's 24-feet,6-inch elevation relative to I
the outside atmosphere in the secondary containment. In S&L's letter dated June 16, 1998, DR-MP3-0580 raises issues regarding the ventilation fans running during the surveillance and the effect on the results of the surveillance.
a.
Please describe the Millstone Unit 3 surveillance testing procedure as it l
relates to fan operation during the test.
b.
Are the initial operating conditions for the surveillance test specified or consistently established?
c.
If the initial operating conditions are not consistent, how is degradation of secondary containment integrity trended?
d.
If the initial operating conditions are consistently established, describe how degradation of secondary containment integrity is trended.
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l Millstone Nuclerr PowIr Station Unit 3 cc:
Lillian M. Cuoco, Esquire Joseph R. Egan, Esquire Senior Nuclear Counsel Egan & Associates, P.C.
Northeast Utilities Service Company 2300 N Street, NW P. O. Box 270 Washington, DC 20037 Hartford, CT 06141-0270 Mr. F. C. Rothen Edward L. Wilds, Jr., Ph.D.
Vice President - Work Services Director, Division of Radiation Northeast Utilities Service Company Department of Environmental Protection P. O. Box 128 79 Elm Street Waterford, CT 06385 Hartford, CT 06106-5127 Ernest C. Hadley, Esquire Regional Administrator, Region i 1040 B Main Street U.S. Nuclear Regulatory Commission P.O. Box 549 475 Allendale Road West Wareham, MA 02576 King of Prussia, PA 19406 Mr. John Buckingham First Selectmen Department of Public Utility Control
- Town of Waterford Electric Unit 15 Rope Ferry Road 10 Liberty Square Waterford, CT 06385 New Britain, CT 06051 Mr. Wayne D. Lanning, Director Mr. James S. Robinson, Manager Millstone Inspections Nuclear Investments and Administration Office of the Regional Administrator New England Power Company 475 Allendale Road 25 Research Drive King of Prussia, PA 19406-1415 Westborough, MA 01582 Mr. M. H. Brothers Mr. John Streeter Vice President - Millstone Unit 3 Recovery Officer - Nuclear Oversight Northeast Nuclear Energy Company Northeast Utilities Service Company P.O. Box 128 P. O. Box 128 Waterford, CT 06385 Waterford, CT 06385 Mr. M. R. Scully, Executive Director Deborah Katz, President Connecticut Municipal Electric Citizens Awareness Network Energy Cooperative P.O. Box 83 30 Stott Avenue Shelburne Falls, MA 03170 Norwich, CT 06360 Mr. Allan Johanson, Assistant Oirector Mr. John Carlin Office of Policy and Management Vice President - Human Services Policy Development and Planning Northeast Utilities Service Company Division P. O. Box 128 450 Capitol Avenue - MS# 52ERN Waterford, CT 06385 P. O. Box 341441 Hartford, CT 06134-1441
Millstone Nucinr Power Station Unit 3 cc:
The Honorable Terry Concannon Citizens Regulatory Commission l
Nuclear Energy Advisory Council ATTN: Ms. Susan Perry Luxton l
Room 4035 180 Great Neck Road Legislative Office Building Waterford, CT 06385 Capitol Avenue Hartford, CT 06106 Mr. William D. Meinert Nuclear Engineer Mr. Evan W. Woollacott Massachusetts Municipal Wholesale Co-Chair Electric Company Nuclear Energy Advisory Council P.O. Box 426 128 Terry's Plain Road Ludlow, MA 01056 Simsbury, CT 06070 l
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 Northeast Nuclear Energy Company P.O. Box 128 Waterford, CT 06385 Mr. Daniel L. Curry Project Director Parsons Power Group Inc.
2675 Morgantown Road Reading, PA 19607 Mr. P. D. Hinnenkamp Director - Unit 3 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 l
Nicholas J. Scobbo, Jr., Esquire l
Ferriter, Scobbo, Caruso, & Rodophele, P.C.
75 State Street,7th Floor l
Boston, MA 0210 l
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