NRC-96-0001, Informs That Util Revising Original Schedule to Provide for Hardware Installation of Monitoring Sys During Sixth Refuel Outage,Per GL 94-02

Informs That Util Revising Original Schedule to Provide for Hardware Installation of Monitoring Sys During Sixth Refuel Outage,Per GL 94-02

ML20096G890
Person / Time
Site:	Fermi
Issue date:	01/22/1996
From:	Gipson D DETROIT EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
CON-NRC-96-0001, CON-NRC-96-1 GL-94-02, GL-94-2, NUDOCS 9601260135
Download: ML20096G890 (4)

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e Drugiss R. Cipsen

' senior Vce President Nuclear Generston

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Fermi 2 i

6400 North Dune Hghway J

Newport, Mchigan 48166 (313) 586-5249 4

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Januay 22,1996 NRC-96-0001 U. S. Nuclear Regulatoy Commission l

Attn: Document Control Desk l

Washington, D. C. 20555

References:

1) Fermi 2 NRC Docket No. 50-341 NRC License No. NPF-43 1

2) NRC Generic Letter 94-02,"Long Term Solutions and Upgrade of j.

Interim Operating Recommendations for Thermal-Hydraulic Instabilities in Boiling Water Reactors", dated July 11,1994.

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3) Detroit Edison Response to NRC Generic Letter 94-02, NRC-94-0089, dated September 8,1994.

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Subject:

Revision to Imnlementation Schedule for Generic Letter 94-02 4

Reference 2 requested licensees to take the following actions: 1) augment procedures and training for preventing or responding to thermal hydraulic instabilities and 2) submit a schedule and a plan describing the long term stability solution selected.

Reference 3 stated Detroit Ed,ison's intent to comply with items I and 2 above. Item 1 actions were completed, and Item 2 actions are to implement the long term solution designated as BWROG Option III as described in Reference 3. Option III introduces new hardware and sonware that provides early detection of thermal hydraulic instabilities and initiates an appropriate mitigation action. Detroit Edison participated in the BWROG and has contracted with General Electric (GE) to design and deliver j

the monitoring package.

l As discussed in reference 3, the new monitoring system was scheduled to be installed l

during the fifth refuel outage. After installation, Detroit Edison intended to monitor and evaluate the Option III trip performance for one cycle prior to activating the

'I 00.fg 9601260135 960122 PDR ADOCK 05000341 P

PDR a

l USNRC January 22,1996 NRC-96-0001 Page 2 automatic trip to ensure the monitor would not cause unnecessary challenges to plant safety systems. Therefore, activation of the monitoring system stability trip was scheduled for the sixth refuel outage. As stated in Reference 3 implementation of the monitoring system was contingent on Detroit Edison and GEjoint development activities.

The original contract schedule to deliver the design documentation and hardware to support the fifth refuel outage (Fall 1996) has slipped, because of the delays in the design and testing of the monitoring package by GE. Because of these delays, the design package required for installation has not been completed and insufficient time remains to ensure thorough planning and implementation of the new monitoring system for the 1996, fiflh refuel outage. Also the NRC has not formally approved the algorithms for the GE Option III methodology. Therefore, based on these considerations, Detroit Edison is revising the original schedule to provide for hardware installation of the monitoring system during the sixth refuel outage. As stated previously, Detroit Edison plans to monitor and evaluate the Option Ill trip performance prior to activating the automatic trip. Detroit Edison plans to activate the automatic trip during the seventh refuel outage.

Please refer to the enclosure for the revision of the milestones as discussed by Reference 3. If you should have any questions, please contact Joseph M. Pendergast, Licensing Engineer at (313) 586-1682.

Sincerely bY 1

Enclosure l

cc:

T. G. Colburn M. J. Jordan II. J. Miller A. Vegel l

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USNRC January 22,1996 N~RC-96-0001 Page 3 l

1, DOUGLAS R. GIPSON, 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.

DOUdLAS d[GIPSON Senior Vice President h

On this M/l/

day of

-44todb/~,1996 before me personally appeared Doaglas R. Gipson,lfeing first dulyfworn and says that he executed the foregoing as his free act and deed.

1 Ld/A F

Notary Public ROSAllE A. ARME1TA NOTARY PUBUC-MONR0E COUNTY, MI MYCOMMISSION EXPIRES 10/1U99 e

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Enclosure to NRC-96-0001 Page1 4

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j TABLE FERMI 2 SPECIFIC ACTIVITIES (OPTION III PLUS PRNM UPGRADE)

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i 2Q97 Submit Technical Specification Change for NUMAC PRNM Upgrade (and improved 4-channel APRM with 2 out of 4 trip logic) j 4Q97 Ilardware Fabrication Complete & Factory Acceptance Test Complete a

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-IQ98 Confirm schedule for implementation IQ98 NRC approved SER of Technical Specification Change submittal for PRNM 2Q98 Install PRNM upgrade (and improved 4-channel APRM with 2 out of 4 trip logic) and Option III (with stability trip disabled) 4Q98 Submit Technical Specification Change for Option III (stability) functions in NUMAC PRNM' s

- 3Q99 NRC SER of Technical Specification Change submittal for Option III (stability) functions. (Prior to refueling outage scheduled to start 9/99)

'l 4Q99 Activate Stability Trip Function, for Cycle 8.

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