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7[ ~2 b Gentlemen:
The enclosed Information-Notice No. 82-06, " Failure of Steam Generator Primary Side Manway Closure Studs," is forwarded to you for information. No written response is required.
If you desire additional information regarding this matter, please contact this office.
Sincerely, Ronald C. Haynes Regional Administrator
Enclosure:
IE Information Notice No. 82-06 with 1 Attachment CONTACT:
L. E. Tripp (215) 337-5282 9
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LIST OF HOLDERS OF NUCLEAR POWER REACTOR OPERATING w
LICEN$ES AND CONSTRUCTION PERMITS RECEIVING IE INFORMATION NOTICE N0. 82-06
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8 Baltimore Gas and Electric Company Docket Nos. 50-317 ATTitr Mr. A. E. Lundvall, Jr.
50-318 s\\ Vice President, Supply
.'9 0.\\ Box 1475 4
. B_alticore, Maryland 21203 l
.y Bbston Edison Con'.pany M/C.% clear Docket No. 50-293 ATTf/f Mr. Williamt0. Harrington Senior Vice President, Nuclear 80.0.Boylston Street S Bostoh', Massachusetts 02199,
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Connecticut Yarkce Atomic Power Company Docket No. 50-213 ATTNi Mr. W."G. Counsil i
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Senior Vice President -~ Nuclear Enginee:ing and Operations
. P. O. Box 270
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fiartford, Conne,cticut( 06101
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Cc/rsolidaPed Edison Cor:pany of' Docket Nos. 50-03 New Yorl!, Inch,
50-247 5
. ATTN: Mr.j John D. O!Toole Vice President - Nuclear j
Enjineering and, Quality Assurance j,*
4,Irving Flace
/% New\\Yorr,iNew Yorkt 10003'
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q y1 D2quesr.e' Light Company Docket No. 50-334
..A?TN : Mr. J. J. Carey ~
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Vice President,
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P. Qt tox 4 Sh pur.<fnyrt, Pennsylvanfa 515077.
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~ GPU' Nuclear / Corporation Docket No. 50-219 ATTN: 'Mr. P. B. Fiedler 'N Vice.Presiderst end
( Oyster Creek Nucleal Giner,0f. rector
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-P. O. Box 383+ T Forked River,' NJ '08731.
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Maine Yankee Atomic Power Company Docket No. 50-309 ATTN: Mr. John H. Garrity
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Senior Director Nuclear Engineering and Licensing
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83 Edison Drive Augusta, Maine 04336 GPU Nuclear Corporation Docket No. 50-289 ATTN: Mr. H. D. Hukill i
Vice President and Director of TMI-I P. O. Box 480 t
Middletown, Pennsylvania 17057 GPU Nuclear Corporation Docket No. 50-320 ATTN: Mr. J. J. Barton Acting.Vice President and Director of TMI-2 P. O. Box 480 l
Middletown, Pennsylvania 17057 Niagara Mohawk Power Corporation Docket No. 50-220 ATTN: Mr. T. E. Lempges Vice President Nuclear Generation L
300 Erie Boulevard West j
Syracuse, New York 13202 i
r Northeast Nuclear Energy Company Docket Nos. 50-336 ATTN: Mr. W. G. Counsil 50-245 Senior Vice President - Nuclear 50-423 i
Engineering and Operations Group P. O. Box 270 Hartford, Connecticut 06101 Philadelphia Electric Company Docket Nos. 50-277 ATTN: Mr. S. L. Daltroff 50-278 i
Vice President Electric Production 2301 Market Street Philadelphia, Pennsylvania 19101 Power' Authority of the State of New York Docket No. 50-286 Indian Point 3 Nuclear Power Plant ATTN: Mr. J. C. Brons Resident Manager P. O. Box 215 Buchanan, New York 10511
3 Power Authority of the State of New York Docket No. 50-333 James A. FitzPatrick Nuclear Power Plant ATTN: Mr. Corbin A. McNeill, Jr.
Resident Manager P. O. Box 41 Lycoming, New York 13093 Public Service Electric and Gas Company Docket Nos. 50-272 ATTN: Mr. Richard A. Uderitz 50-311 Vice President - Nuclear Mail Code T15A P. O. Box 570 Newark, New Jersey 07101 Rochester Gas and Electric Corporation Docket No. 50-244 ATTN: Mr. John E. Maier Vice President Electric and Steam Production 89 East Avenue Rochester, New York _14649 Vermont Yankee Nuclear Power Corporation Docket No. 50-271 ATTN: Mr. Robert L. Smith Licensing Engineer 1671 Worcester Road Framingham, Massachusetts 01701 Yankee Atomic Electric Company Docket No. 50-29 ATTN: Mr. James A. Kay Senior Engineer-Licensing 1671 Worcester Road Framingham, Massachusetts 01701 Duquesne Light Company Docket No. 50-412 ATTN: Mr. E. J. Woolever Vice President Nuclear Construction Robinson Plaza Building No. 2 Suite #210, PA Route 60 Pittsburgh, Pennsylvania 15205 Jersey Central Power & Light Company Docket No. 50-363 ATTN: Mr. J. T. Carroll Acting Director Oyster Creek Nuclear Generating Station P. O. Box 388 Forked River, New Jersey 08731
4 Long Island Lighting Company Docket No. 50-322 ATTN: Mr. M. S. Pollock Vice President - Nuclear 175 Ec,t Old Country Road Hicksville, New York 11801 Niagara Mohawk Power Corporation Docket No. 50-410 ATTN: Mr. Gerald K. Rhode Vice President System Project Management c/o Miss Catherine R. Seibert 300 Erie Boulevard, West Syracuse, NY 13202 Pennsylvania Power & Light Company Docket Nos. 50-387 ATTN: Mr. Norman W. Curtis 50-388 Vice President Engineering and Construction - Nuclear 2 North Ninth Street Allentown, Pennsylvania 18101 Philadelphia Electric Company Docket Nos. 50-352 ATTN: Mr. John S. Kemper
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50-353 Vice President Engineering and Research 2301 Market Street Philadelphia, Pennsylvania 19101 Public Service Electric & Gas Company Docket Nos. 50-354 ATTN: Mr. T. J. Martin 50-355 Vice President Engineering and Construction 80 Park Plaza - 17C Newark, New Jersey 07101 Public Service Company of New Hampshire Docket Nos. 50-443 ATTN: Mr. W. C. Tallman 50-444 Chairman and Chief Executive Officer 1000 Elm Street Manchester, New Hampshire 03105
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UNITED STATES C
NUCLEAR REGULATORY COMMISSION 2
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March 12, 1982 N
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IE INFORMATION NOTICE NO. 82-06:
FAILURE OF STEAM GENERATOR PRIMARY
't@AY CLOSURE STUDS Description of Circumstances:
The Nuclear Regulatory Commission (NRC) was notified by Maine Yankee Atomic Power Company and by Combustion Engineering (CE) that during routine disas-sembly of a ste'am generator primary side manway at Maine Yankee, 6 of the 20 manway closure studs failed and another 5 were found by ultrasoni' testing to be cracked. These are lh x 10 inch studs of SA 540 grade B 24 alloy steel.
The studs had been exposed to boric acid from a small primary coolant leak and.to Furmanite sealing compound (primary grade) applied in an attempt to seal this leak.
The studs exhibited evidence of surface corrosion attack possibly as a result of an interaction associated with stud preload, lubricant, Furmanite and primary coolant leakage environment.
A metallurgical analysis to determine the failure mechanism is currently underway at CE.
The entire set of studs on the affected steam generater (SG #2) have been replaced and an ultrasonic examination of all primary manway studs on steam generator,
units 2 and 3 is being performed.
Further corrective actions are pending stud failure analysis and its applicability to other primary boundary closures.
In the last few years there have been a significant number of incidents of failed or severly degraded bolts and studs.
Examples of the latter; primary coolant pump stud-bolts (Calvert Cliffs and Ft Calhoun) and steam generator primary manway closures studs (0conee and ANO-1).
The failures described were attributed to stress corrosion cracking and corrosion wastage of high strength studs that are difficult to detect.
The NRC has contacted the CE Regulatory Response Group and requested a review of the problem.
This IE information notice is provided as an early notification of a potentially significant matter that is still under review by the NRC staff.
If NRC evalua-tion so indicates, further licensee action may be requested.
In the interim, we expect that licensees will review this information for applicability to their facilities.
No written response to this information notice is requested.
If you need addi-tional information, please contact the Regional Administrator of the appropriate NRC Regional Office.
Attachment:
Recently issued IE Information Notices ft
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- I' Attach::nt IN 82-06 March 12, 1982 RECENTLY ISSUED IE INFORMATION NOTICES Information Subject Date Issued to Notice No.
Issued 82-05 Increasing Frequency 03/10/82 All power reactor of Drug Related facilities holding Incidents an OL or CP 82-04 Potential Deficiency of 03/10/82 All power reactor Certain AGASTAT E-7000 facilities holding Series Time-Delay Relays an OL or CP 82-03 Environmental Tests of 03/04/82 All power reactor Electrical Terminal facilities holding Blocks an OL or CP 82-01 Auxiliary Feedwater Pump 02/26/82 All power reactor Rev. 1 Lockout Resulting from facilities holding Westinghoue W-2 Switch an OL or CP Circuitry Modification 80-32 Rev. 1 Clarification of Certain 02/12/82 All facility, Requirements for Exclu-materials and sive use Shipments of Part 50 licensees Radioactive Materials 81-37 Rev. 1 Unnecessary Radiation 02/9/82 Selected Material.
Exposures to the Licensees Public and Washers During Events Involving Thickness and Level Measuring Devices 82-02 Westinghouse NBFD 1/27/82 All holders of a Relay Failures in power reactor Reactor Protection OL or CP Systems at Certain Nuclear Power Plants 82-01 Auxiliary Feedwater 01/26/82 All holders of a Pump Lockout Resulting power reactor from Westinghouse W-2 OL or CP Switch Circuit Modi-fication i
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