ML20217H545

Application for Amends to Licenses NPF-9 & NPF-17,requesting Replacement of Three Safety Related Narrow Range Refueling Water Storage Tank Level Instruments W/Three Safety Related Wide Range Level Instruments

ML20217H545
Person / Time
Site:	Mcguire, McGuire
Issue date:	10/13/1997
From:	Barron H DUKE POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20217H551	List: ML20217H545 ML20217H554
References
NUDOCS 9710160133
Download: ML20217H545 (6)

Text

/7 D 1 Duke Power Company A tw temp u.ynn Ate f=.yt y.,

.I . 12700 llapro f erry Rd, Ilunteravdle, NC 28078 9340

11. II, llarron

%r1%ident, AlcGuire (7N) 873 4809 019IU Nudrev Generstin i1rjunrtroent (7M) 873-4809 iM l

l October 13, 1997 Document Control Desk US Nuclear Regulatory Commission Washington, D.C. 20555 l

l

Subject:

McGuire Nuclear Station, Units 1 and 2 Docket Nos: 50-369 and 50-370 Proposed Technical Specification Amendment Technical Specification Tablo 3.3-4 (ESF Trip Setpoint)

Dear Sire Pursuant to 10CFR50.90, please find attached license amendment requests to Appendix A, Technical Specification of Facility Operating License NPF-9 and NPF-17 for McGuire Nuclear Station Units 1 and 2, respectively.

The attached license amendment is needed to support replacement of the three safety related narrow range Refueling Water Storage Tank (FWST) level instruments with three safety related wide range level instruments. The technical specification ESP trip setpoint for the FW automatic switchover to recirculation is being revised to account for the difference in instrument uncertainty associated with wide range level instruments and provide additional operator response time margin. The setpoint revision also corrects a previously identified non-conservative Technical Specification value for the ECCS switchover setpoint.

Replacing the three (3) safety related narrow range transmitters with three (3) safety related wide range transmitters during the current outage would enhance ECCS reliability and provide j operational margin during post-accident conditions. Wide range '

transmitters will provide indication over the entire range of the /

tank level. The wide range instruments allow for raising the LOW r _

level alarm setpoint and, thus, provide plant operators additional l response time for performing manual actions required by emergency response procedures to complete the transfer to cold leg f }d{)\)

recirculation during an accident scenario.

The current narrow range instrumentation is normally off-scale high. Operability is assured by periodic testing and calibration.

Converting to wide range instrumentation will provide continuous 1

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US Nuclear Regulatory Commission l October 13, 1997 Page 2 indication to the operators that the instrumentation is functional, more readily allowing detection of instrumentation malfunctions. In addition, this Technical Specification change corrects a previously identified non-conservative Technical Specification value for the ECCS switchover setpoint. McGuire presently has administrative controls in place to compensate for this non-conservative Technical Specification value. During the current outage, a commitment to improve freeze I protection for the Refueling Water Storage Tank (FWST) level instrumentation is being fulfilled for Unit 2. Because of the extensive work that will be required to support the freeze protection modification, McGuire plans to replace the level transmitters at the same time. l l Replacing the transmitters during this outage will require NRC , approval by December 1, 1997. After this outage, the next available opportunity to install the instrumentation is February, 1999, consistent with the next Unit 2 refueling outage. Therefore, expedited approval of the proposed amendment is requested to allow replacement to proceed. After approval of this amendment by the NRC, implementation for Unit 2 will be within 30 days. However, we request implementation for Unit 1 on June 3, 1998, consistent with the scheduled refueling outage. Attachment 1 contains the marked up and corrected copy of the Technical Specification amendment for McGuire, including revised Improved Technical Specification (ITS) pages. These ITS pages will amend the initial submittal of ITS in May 27, 1997. Attachment 1 also contains the proposed Technical Specification Bases changes (section 3/4.1.2) submitted for information only. The Bases section will be revised as part of the Technical Specification implementation process. Attachment 2 contains a description of the proposed change and the technical justification. Pursuant to 10CFRSO.91, Attachment 3 provides the analysis performed in accordance with the standards contained in 10CFR50.92, which concludes that the requested amendment does not involve a significant hazards consideration. Attachment 4 is the Environmental Impact Evaluation for the requested amendment. The proposed Technical Specification amendment will require revision to the UFSAR and will be addressed by separate submittal to the NRC. The Plant Operations Review Committee (PORC) at McGuire and the Nuclear Safety Review Board (NSRB) have reviewed and approved this proposed Technical Specification amendment.

                                  ~o

F.US Huclear Regulatory Commission October 13, 1997 Page 3 Per 10CFR50.91, a copy of this amendment request is being forwarded to the appropriate NC State officials. If there are any questions concerning this amendment request or should additional information be required, please call Virginia owen at (704)875-5113. 0 Very truly yours, fj i www

11. B . Barron, Vice President McGuire Nuclear Station -

Duke Energy Corporation m

US Nuclear Regulatory Commission October 13, 1997 Page 4 l xc: Mr. Luis A. Reyes Administrator, Region II US Nuc1 car Regulatory Commission Atlarata Federal Center 61 Forsyth St., SW, Suite 23T85 ! Atlanta, GA 30303 Mr. Victor Nerses US Nuclear Regulatory Ccmmission of fice of Nuclear Reactor Regulation (141125) washington, D.C. 20555 Mr. Scott M. Shaeffer NRC Senior Resident Inspector McGuire Nuclear Station Mr. Richard M. Fry, Chief Division of Radiation Protection State of North Carolina 3825 Barnett Drive Raleigh, N.C. 27609-7221

US 11uclear Regulatory Commission October 13. 1997 Page F H Mtron, ;;o;ng duly sworn, states that ho is Vice President,

   ' :W, t e Nud -ar , 'ation, Duke Energy Corporation s that he in w thu t v.- or + M ' art of the said corporation to sign and file
   -tith t e N" lent . .gulatory Commission this revision to the nn ,:a r: n*:1 Car F Ation Technical Specifications and that all e '; w . c "

t.95 er.sters set forth therein are true and correct to ) t h .: eoe of biv knowledge. >- 'Abn. , f,ff it . E his".on, Vice President j iknal*,riucionr Station ihr+ .nergy Corporation N Subscribed and sworn to me this 13th day of October, 1997. C Cc w k b, it ary Public i10 b d m D 3h W S,DttCKldOWIk My Commission expires: 31stla m a l l l

US Nuclear Regulatory Commission October 13, 1997 Page 6 bxc E. Mac Geddie  ! J.. W. Boyle ' P. R. lierran G. A. Copp (EC050)  ! M. S. Kitlan (CN01RC) J. E. Burchfield (ON01RC) - J. W. Pitesa i V. S. Owen ! W. R. Cross i K. L. Crane ! P. T. Vu , l J. M. Washam i ! P. R. Newton (PB05E) , l ELL (EC050) ( i l l l i I i h i { 4 J

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