NRC-89-0111, Forwards Modified App R Tech Specs Re Alternate Shutdown Sys,Per Discussions W/Nrc.Mod Involves Action & Surveillance Requirements for Power Supply Designated for Alternative Shutdown
| ML20244B165 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 05/31/1989 |
| From: | Sylvia B DETROIT EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20244B167 | List: |
| References | |
| CON-NRC-89-0111, CON-NRC-89-111 NUDOCS 8906130004 | |
| Download: ML20244B165 (4) | |
Text
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- s. natpn syivu Senior vice President 6400 North Dixie Highway ISO Newport. Michigan 40166 (313) 686-4150 i
i May 31,1989 i
NIC-89-Olll j
i, U. S. Ibclear Regulatory Commission j
Attn: Document Control Desk Washington, D. C.
20555
References:
- 1) Fermi 2 NIC Docket No. 50-341 NIC License No. IEF-43
- 2) Detroit Edison Letter to NIC, imC-80-0281,
" Proposed Technical Specification Change (License Amendment) - Appendix R Alternative Shutdown System", dated December 22, 1988
Subject:
Supplement to Technical Specification Change (License Amendment) - Appendix R Alternative
@utdown System Detroit Edison in Reference 2 submitted proposed Technical Specifications for the Appendix R Alternative Shutdown System. Based upon discussions with the NIC staff concerning the Reference 2 proposal, Detroit Edison is submitting the attached nodified Appendix R Technical Specifications. The modifications involve the ACTION and Surveillance Requirements for the power supply designated for Alternative Shutdown, C7G11 Unit 1.
The No Significant Hazards Consideration determination contained in Reference 2 remains applicable to the modified proposal. The Fermi 2 Onsite Review Organization has approved and the Ibclear Safety Review Group has reviewed the Technical Specifications and concurs with the enclosed determinations.
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go 8906130004 890531 PDR ADOCK 05000341 P
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4 US!EC May 31, 1989 1GC-89-0111 Page 2 If you have any questions, please contzet Mr. Glen Ohlemacher at (313) 586-4275.
Sincerely, D1 closure cc:
A. B. Davis R. C. Knop W. G. Rogers J. F. Stang Supervisor, Myanced Planning ard Review Section, Michigan Public Service Commission l
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'c-May 31,'1989
' NIC-89-0111 Page 3 1
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I, B. RALPH SYLVIA, do hereby affirm that the^ foregoing statements are based on facts and circumstances which are true and ' accurate to the best of my knowledge and belief.
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- 5. RALPff SYJVfA Senior Vice President On this 8
day of l'
, 1989, before me personally appeared B. Ralph Sylvia,'b(/ng first duly sworn and says that he executed the foregoing as his free act and deed.
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/XiYlL Notary Public u-ROSAt.fE A ARME1TA Notory Public, Monroe County MI My Commis: ton Expires Jon. ii.1972
P Enclosure to
!@C-89-0111 Page 1 IEDIFIED APPERCIX R 'IIKIMICAL SPECIFIClLTIGIS Tte proposed Appendix R Technical Specifications of Reference 2 have been modified as follows:
1).
Added changes to Index pages v, viii, xiii, and xv to reflect new
- Specifications 3/4,3.11 and 3.4.7.11 and associated Bases.
2)
Specification 3/4.7.11 ACTION B.
The time allowed in subpart 1 for the performance of Surveillance Requirement 4.8.1.1.1 is reduced to 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> from 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />. This is to be consistent with the tine period allowed to perform this surveillance elsewhere in the Technical Specifications.
3)
. Specification 4.7.11.2.
A mininum load requirement of at least 10 m _is_now specified. A loading of 10 m is just below the lower range of expected base load values, which vary with anbient.
temperature. Significant margin exists between the specified load of 10 m and power requirements during a plant shutdown which follows the Appendix R scenario. Attaining a 10 m load assures that the C'IG is operating properly and is not undergoing a degradation of performance whicn must be corrected.
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