ML19353A994
| ML19353A994 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 12/01/1989 |
| From: | Boyle M Office of Nuclear Reactor Regulation |
| To: | Mroczka E CONNECTICUT YANKEE ATOMIC POWER CO. |
| Shared Package | |
| ML19353A850 | List: |
| References | |
| GL-88-01, GL-88-1, TAC-69145, NUDOCS 8912110026 | |
| Download: ML19353A994 (4) | |
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December 1, 1989 q
Docket No. 50-245:
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i Mr. Edward J. Mroczka Senior Vice President' Nuclear Engineering and Operations Connecticut Yankee Atomic Power Company Northeast Nuclear Energy Company P. 0,, Box-270 Hartford, Connecticut- 06141-0270 i
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Dear Mr. Mroczka:
SUBJECT:
REVIEW OF LICENSEE RESPONSE TO GENERIC LETTER 88-01, MILLSTONE a>
NUCLEAR POWER STATION, UNIT NO. 1 (TAC NO. 69145)
The staff has completed the review of yr>ur, responses dated July 27, 1988,'and February _3 and_ May 19.-1989, to Generic Letter (GL) 88-01, "NRC. Position on
'IGSCC in BWR Austenitic Stainless Steel Piping", dated January 25, 1988. The
. staff's Safety Evaluation and its review contractor's report are enclosed.
The -staff finds that NNECO's response is acceptable with the exception of NNECO's positions on the implementation of the leakage detection and piping ISI requirements. NNECO proposed to implement these requirements in plant documents other.-than the Technical Specifications (TS). For discussion of these items:see Section 3.0 of the enclosed VSI Technical Evaluation Report dated, June'1989.
L For your' information a meeting was held.on August 22, 1989, between the Mechan _ical' Engineering Branch and Technical Specification Branch Staff to l_
discuss the changes relative to GL-88-01 that would be included in the BWR Improved: Standard TS.
It was' agreed that the proposed Improved Standard TS
.for BWR plants would incorporate the staff's positions in GL-88-01 with regard
' to TS changes with the exception that leakage may be monitored every 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />. After discussions with several BWR operators that staff concluded that monitoring every 4-hour's creates an unnecessary administrative hardship to plant: operators. Thus, RCS leakage measurements may be taken every 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> instead-of every 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> as required in GL-88-01.
In addition this SE precludes = the necessity for NNECO to submit IGSCC inspection plans for each i
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-iL Mr. Edward'J. Mroczka 2-o futura outage.. 'However, if flaws are found that do not meet the criteria of Paragraph IWB.3500 of Section XI of the ASME' Code for continued operation "without evaluation, the evaluations of the flaws should be submitted to the 1
NRC for review prior to start up.
1 Sincerely,
/s/
u-Michael L. Boyle, Project Manager Project Directorate I.4 i
Division of. Reactor Projects. ?/II Office of Nuclear Reactor Regulution
Enclosures:
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'Mr. Edward J. Mroczka 2-s
~ future outage. However, if flaws are found that do not meet ~the criteria of 1
. Paragraph IWB-3500 of Section XI of the ASME Code for continued operation-without evaluation..the. evaluations of the flaws should be submitted to the llRC for review _ prior to start-up.
Sincerely, s
Michael L.
yle, Project Manager Project Di ectorate I-4 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Enclosures:
As stated cc.w/ enclosures:
See~next page L
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Mr. Edward J. Mroczka Millstone Nuclear Power Station i
Northeast Nuclear Energy Company-Unit No. 1 Cci Gerald Garfield, Esquire R. M. Kacich, Manager Day, Berry and Howard Generation Facilities Licensing Counselors at Law Northeast Utilities Service Company City Place Post Office Box 270 Hartford, Connecticut 06103-3499 Hartford, Connecticut 06141-0270 W. D. Romberg, Vice President D. O. Nordquist Nuclear Operations Manager of Quality Assurance Northeast Utilities Service Company Northeast Nuclear Energy Company Post Office Box 270 Post Office Box 270 Hartford, Connecticut 06141-0270 Hartford, Connecticut 06141-0270 Kevin McCarthy, Director Regional Administrator Radiation Control Unit Region I Departnent of Environmental Protection U. S. Nuclear Regulatory Commission State Office Building 475 Allendale Road Hartford, Connecticut 06106 Kir.g of Prussia, Pennsylvania 19406 Bradford S. Chase, Under Secretary First Selectmen Energy Division Town of Waterford Office of Policy and Management Hall of Records 80 Washington Street 200 Boston Post Road Hartford, Connecticut 06106 Waterford, Connecticut 06385 4
S. E. Scace, Station Superintendent W. J. Raynond, Resident Inspector.
Millstcne Nuclear Power Station Hillstone Nuclear Power Station Northeast Nuclear Ener;.v Company c/o U. S. Nuclear Regulatory Cor. mission Post Office Box 128 Post Office Box 811-Waterford, Cor.necticut 06385 Niantic, Connecticut 06357 J. P. Stetz, Unit Superintendent Millstone Unit No. 1 Northeast Nuclear Energy Company Post Office Box 128 Waterford, Connecticut' 06385 1
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