ML17056B390
| ML17056B390 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 09/16/1991 |
| From: | Brinkman D Office of Nuclear Reactor Regulation |
| To: | Sylvia B NIAGARA MOHAWK POWER CORP. |
| References | |
| TAC-80214, NUDOCS 9109230053 | |
| Download: ML17056B390 (8) | |
Text
September 16, 1991 Docket No. 50-220 Mr. B. Ralph Sylvia Executive Vice President, Nuclear Niagara Mohawk Power Corporation 301 Plainfield Road
- Syracuse, New York 13212 9 INTR.IBUTTON:
NRC
& Local PDRs PDI-1 Reading SVarga JCalvo RACapra
Plant File DBrinkman DOudinot CVogan
Dear Mr. Sylvia:
SUBJECT:
NINE MILE POINT NUCLEAR STATION UNIT NO.
1 - RE(VEST FOR INFORMATION REGARDING PERFORMANCE OF STEEL CONTAINMENT (TAC NO. 80214)
Meetings were held on April 24, 1991, and July 15, 1991, with Niagara Mohawk Power Corporation and NRC staff representatives to discuss torus wall thinning and the overall performance capabilities of the Nine Mile Point Unit No.
1 containment to withstand severe accidents.
This information is to be used by the staff for a study on containment performance.
The purpose of this study is to assess the performance of steel containments with inservice degradation in order to identify design basis and severe accident concerns.
The NRC staff needs additional information regarding the Nine Mile Point Unit No.
1 drywell in order to complete this study.
The specific information requested is noted in the enclosed request for additional information.
Please provide this information within 30 days from receipt of this letter.
The requirements of this letter affect fewer than 10 respondents
- and, therefore, are not subject to Office of Management and Budget review under P.L.'6-511.
Enclosure:
Request for additional information cc w/enclosure:
See next page Donald S. Brinkman, Senior Project Manager Project Directorate I-1 Division of Reactor Projects
.- I/II Office of Nuclear Reactor-Regulation
/gyle ~l!E gS~
'AME
- CVogan g 0 WWWO WWW \\
WW DATE: l/l)/91 5 A%
- DO ot:g
- DBrinkhi5n
- 7////91: 0/ OmSOOSS 9i09>a PDR ADOCK 05000220, p
~ g 0
~
4l I
~
~
Hl
(
y REo(
0 I '7'(I o
+**<<+
Docket No. 50-220 UNITED STATES NUCLEAR REGULATORY COMIVIISSION WASHINGTON, D.C. 20555 September 16, 1991 Mr. B. Ralph Sylvia Executive Vice President, Nuclear Niagara MIohawk Power Corporation 301 Plainfield Road
- Syracuse, New York 13212
Dear Mr. Sylvia:
SUBJECT; NINE MILE POINT NUCLEAR STATION UNIT NO.
1 -
REQUEST FOR INFORMATION REGARDING PERFORMANCE OF STEEL CONTAINMENT (TAC NO. 80214)
Meetings were held on April 24, 1991, and July 15, 1991, with Niagara Mohawk Power Corporation and NRC staff representatives to discuss torus wall thinning and the overall performance capabilities of the Nine Mile Point Unit No.
1 containment to withstand severe accidents.
This information is to be used by the staff for a study on containment performance.
The purpose of this study is to assess the performance of steel containments with inservice degradation in order to identify design basis and severe accident concerns.
The NRC staff needs additional information regarding the Nine Mile Point Unit No.
1 drywell in order to complete this study.
The specific information requested is noted in the enclosed request for additional information.
Please provide this information within 30 days from receipt of this letter.
The requirements of this letter affect fewer than 10 respondents
- and, therefore, are not subject to Office of Management and Budget review under P.L.96-511.
Sincerely, v'2 S~
Donald S. Brinkman, Senior Project Manager Project Directorate I-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Enclosure:
Request for additional information cc w/enclosure:
See next page
(
Mr. B. Ralph Sylvia Niagara Mohawk Power Corporation CC:
Mr. Mark J. Wetterhahn, Esquire Winston 5 Strawn 1400 L Street, NW.
Washington, D.C.
20005-3502 Supervisor Town of Scriba R.
D, g4
- Oswego, New York 13126 Mr. Joseph F. Firlit Vice President - Nuclear Generation Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station Post Office Box 32
- Lycoming, New York 13093 Resident Inspector U.S. Nuclear Regulatory Commission Post Office.Box 126
- Lycoming, New York 13093 Mr. Gary D. Wilson, Esquire Niagara Mohawk Power Corporation 300 Erie Boulevard West
- Syracuse, New York 13202 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 Ms.
Donna Ross New York State Energy Office 2 Empire State Plaza 16th Floor
- Albany, New York 12223 Nine Mile Point Nuclear Station Unit No.
1 Mr. Kim Dahlberg Unit 1 Station Superintendent Nine Mile Point Nuclear Station Post Office Box 32
- Lycoming, New York 13093 Mr. David K. Greene Manager Licensing Niagara Mohawk Power Corporation 301 Plainfield Road
- Syracuse, New York 13212 Charlie Donaldson, Esquire Assistant Attorney General New York Department of Law 120 Broadway New York, New York 10271 Mr. Paul D.
Eddy State of New York Department of Public Service Power Division, System Operations 3 Empire State Plaza
- Albany, New York 12223
Enclosure RE VEST-FOR-ADDITIONAL. INFORMATION REGARNNG-PERFORMANCE-OF-STEEL..-GONTAI4MENTS NIAGARA-MOHAWK-POWER -CORPORATION NPK-MILE-POINT-NUCLEAR-STATION-UNIT-NO. -1 DOGKET-N0.-50-220 The following information is requested:
~Dr-uell-1.
Loads and load combinations*
2.
Stresses at governing section or sections*
3, Ultimate capacity computation Dr el%-Head-Details l.
Dimensions of the head 2.
Material properties of the steel 3.
Structural design computation 4.
Seal design and materials'sed Dr-el 1-Head-Belts 1.
2.
3.
5.
Sizes and details of the bolts Bolt materials Number of bolts and bolt circle diameter Preload for operation Temperature differentials for design basis and accident conditions.
- The table provided for the April 24, 1991, meeting is not totally legible.