ML20041E860
| ML20041E860 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 02/26/1982 |
| From: | Clark R Office of Nuclear Reactor Regulation |
| To: | Counsil W NORTHEAST NUCLEAR ENERGY CO. |
| References | |
| TAC-8320, NUDOCS 8203150181 | |
| Download: ML20041E860 (4) | |
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FEB 2 01982 RECENED g
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JHeltemes, Docket No. 50-336 Licensing Asst to PKreutzer m
MConner OELD Mr. W. G. Couns11, Vice President I&E-1 Nuclear Engineering & Operations NSIC Northeast Nuclear Energy Company RAClark P. O. Box 270 ACRS-10 Hartford, Connecticut 06101
Dear Mr. Counsil:
By letters dated January 25 and June 25, 1979, you submitted a proposed inservice inspection (ISI) program description and request for relief from ASME Code requirements pursuant to 10 CFR 50.55 a(g) for Millstone, Unit No. 2.
In our review of this program, we find the enclosed request for additional information is needed to complete our review.
We request that you provide the additional information within 30 days after receipt of this r* quest in order to not delay the review schedule of our cont.ractor Science Applicat~ ion, Inc, Thank you in advance for your coop-eration.
The information requested in this letter affects fewer than 10 respondents 1 therefore, OMB clearance is not required under P.L.96-511.
Sincerely.
Original signed by Robert A. Clark Robert A. Clark, Chief Operating Reactors Branch #3 Division of Licensing cc: See next page 8203150181 820226 PDR ADOCK 05000336 G
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OFFICIAL RECORD COPY usam miem
l l-Northeast Nuclear Energy Company cc:
William H. Cuddy, Esquire Mr. John Shediosky Day, Berry & Howard Resident Inspector / Millstone Counselors at Law c/o U.S.N.R.C.
One Constitution Plaza P. O. Drawer XX Hartford, Connecticut 06103 Niantic, CT 06357
'. Charles Brinkman Regional Administrator Manager - Washington Nuclear Nuclear Regulatory Commission, Region I Operations Office of Inspection and Enforcement C-E Power Systems 631 Park Avenue Combustion Engineering, Inc.
King of Prussia, Pennsylvania 19406 4853 Cordell Aven., Suite A-1 Bethesda, MD 20014 Mr. Lawrence Bettencourt,. First Selectman Town of Waterford Hall of Records - 200 Boston Post Road Waterford, Connecticut 06385 Northeast Nuclear Energy Company ATTN:
Superintendent Millstone Plant Office of Policy & Management Post Office Box 128 ATTN: Under Secretary Energy Waterford, Connecticut 06385 Division 20 Washington Street Waterford Public' Library Hartford, Connecticut 06115 Rope Ferry Road, Route 156 Waterford, Connecticut 06385 U. S. Environmental Protection Agnecy Region I Office ATTN:
Regional Radiation Representative John F. Kennedy Federal Building Boston, Massachusetts 02203
'Iortheast Utilities Service Company ATTN:
Mr. Richard T. Laudenat, Manager Generation Facilities Licensing P. O. Box 270 Hartford, Connecticut 06101
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ATTACHMENT 1 REQUEST FOR ADDITIONAL INFORMATION Inservice Inspection Program Millstone 2 i
1.
Under the change in regulation 10 CFR 50.55a effective November 1,1979, your ISI program, when finally approved, will cover the last eighty months of your current 10-year inspection interval, i.e., from April 26, 1979 to
. December 26, 1985.
Does this result in any changes you wish to make in your relief requests? Do you require other ISI relief?
2.
In regards to vessel shell welds N-2, N-4 and N-6, you stated. in Reference 2 that both volumetric and surface examination cf the lower half is precluded by inaccessibility. What kind of visual examination "for signs of structural distress" (as stated in reference 1) is thus possible? What progress have you made in your study of methods to conduct remote examinations of these areas? Have you identified a feasible method'and are you prepared to com.it to doing.it by 1985?
3.
In regards to casing welds on recirculating coolant pumps, have you made any visual inservice ins:ections of these pumps?
If so, document : esults by reference to previous NRC submittals? Have you identified a feasible methed for volumetric inspection and are you prepared to commit to doing it by 1985?
4 In regards to the noz:le-to-vessel welds on the shutdown heat exchangers, please supply information (or document by reference to previcus submittals) to suppoi the contentien that "the nozzles are not subjected to high stresses under any mooe of operation" (in comparison to design stresses).
Please estimate tne pot' ntial radiation exposure (in man-rem etc.) of. doing a lirnited e
vulwnetric examination. What portion of the walds en be volumetrically examined?
5.
The exemption criteria in Paragraph IWC-1220 have been modified in the 1977 Edition of Section XI.
Pipe cracking in affected systems has been the subject of several I & E Sulletins and NRC study groups. The O
Section XI exemption criteria are being superseded by augmented examination requirements on a case-by-case basis during the reviews of ISI programs. The basic principle in these modifications is that emergency core cooling, residual heat removal and containment heat removal ~ systems should not be completely exempted from inservice examination based on Section XI criteria.
Your ISI program must contain periodic volumetric and/or surface examina-tions of a representative sample of welds in the ECCS, RHRS, and CHRS.
please develop an examination program to meet this requirement and submit it for review and approval.
If you have previously done so, please document by reference.
REFEREf4CES:
(1) Counsil to Reid, 1/25/79 (2) Counsil to Reid, 6/25/79 2/5/82 l
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