ML20137U108

Suppl 1,TS Change 353S1 to Licenses DPR-33,DPR-52 & DPR-68, Revising Existing Custom for Units to Include Changes Associated W/Implementation of Pr Neutron Monitor Upgrade & to Incorporate Changes

ML20137U108
Person / Time
Site:	Browns Ferry
Issue date:	04/11/1997
From:	Abney T TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20137U115	List: ML20137U108 ML20137U169
References
NUDOCS 9704160299
Download: ML20137U108 (5)

Text

Tennessee Vauey Authority, Post offce Box 2000, Decatur, Alabama 35609-2000 April 11, 1997 TVA-BFN-TS-353S1 10 CFR 50.4 10 CFR 50.90 10 CFR 50.91 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

In the Matter of ) Docket Nos. 50-259 Tennessee Valley Authority ) 50-260 50-296 BROWNS FERRY NUCLEAR PLANT (BFN) - UNITS 1, 2, AND 3 -

TECHNICAL SPECIFICATIONS (TS) CHANGE 353S1 - POWER RANGE NEUTRON MONITOR (PRNM) UPGRADE WITH IMPLEMENTATION OF AVERAGE POWER RANGE MONITOR (APRM) AND ROD BLOCK MONITOR (RBM) TS l (ARTS) IMPROVEMENTS AND MAXIMUM EXTENDED LOAD LINE LIMIT (MELLL) ANALYSES - SUPPLEMENT 1 - IMPROVED STANDARD TECHNICAL SPECIFICATIONS (ISTS) FORMAT )

On June 2, 1995, TVA submitted amendment request TS-353 (Enclosure 1, Reference 1) to licenses DPR-33, DPR-52, and DPR-68 to revise the existing custom TS for Units 1, 2, and 3 to include changes associated with implementation of the PRNM upgrade, and to incorporate changes related to ARTS and MELLL Analyses. A revision to TS-353 was submitted on March 6, 1997 as TS 353R1. I; a letter provides the proposed TS changes in ISTS format for the same PRNM and ARTS /MELLL changes.

These proposed TS include the necessary revisions for the planned replacement of the power range monitoring portion of the existing Neutron Monitoring System with the advanced digital PRNM upgrade. Implementation of the PRNM system will

'l allow TVA to proceed with implementation of the long-term stability solution designated as Option III in NEDO-31960 and NEDO-31960, Supplement 1, "BWR Owners' Group Long Term

@ hl Stability Solution Licensing Methodology" relating to Generic j Letter 94-02.

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( U.S. Nuclear Regulatory Commission I Page 2 l April 11, 1997

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The PRNM upgrade will be installed first during the Fall 1997 l Unit 2 refueling outage for operation during the following fuel cycle (10). During cycle 10, all PRNM functions will be in service with the exception of the stability monitor trip i functions of the Oscillation Power Range Monitor (OPRM) I module of the PRNM. The OPRM trip function will be operated in the " indicate only" mode for one cycle, and be fully enabled for cycle 11 operation. For Unit 3, the PRNM will be installed in the Fall of 1998 for operation in cycle 9. The  !

OPRM trips will be enabled for the following fuel cycle.

Prior to enabling the OPRM trip function, related TS changes will be submitted.

l TS-353 was based, in part, on Licensing Topical Report l NEDC-32410P, Nuclear Measurement Analysis and Control Power Range Neutron Monitor (.UMAC N PRNM) Retrofit Plus Option III l Stability Trip Functions, March 1995. NEDC-32410P, as subsequently supplemented, was formally accepted for use in licensing applications as documented in an NRC Safety Evaluation Report (SER) dated September 5, 1995. This submittal also endorses the use of NEDC-32410P (issued as NEDC-32410P-A) as a basis for the proposed PRNM system TS changes.

Additionally, these proposed TS changes are needed for TVA's planned implementation of the ARTS /MELLL improvements. The purpose of the ARTS /MELLL changes is to enhance operating l flexibility and efficiency by implementing RBM design improvements, incorporating APRM/RBM TS improvements, and expanding the current allowable operating domain to the MELLL region of the power / flow map. NEDC-32433P, Maximum Extended Load Line Limit and ARTS Improvement Program Analyses for Browns Ferry Nuclear Plant Unit 1, 2, and 3, was provided in

the previous TS-353 submittals and continues to be the l primary basis document for the ARTS /MELLL changes.

Enclosure 1 to this letter provides the description and evaluation of the proposed change, the significant hazards j and environmental impact considerations, and other supporting l inforraation. Attachment 1 of Enclosure 1 includes a confirmation of several plant-specific actions as required by .

the SER for NEDC-32410P. I j

U.S. Nuclear Regulatory Commission Page 3 April 11, 1997 Enclosure 2 contains copies of the appropriate marked-up TS ,

pages from the Units 1, 2, and 3 ISTS to show the proposed l changes. Enclosure 3 forwards the revised TS pages for Units 1, 2, and 3 which incorporate the proposed changes.

These TS changes are based on TS-362, submitted i September 6, 1996, which is the conversion package of the 4 custom BFN TS to ISTS format as described in NUREG-1433, Revision 1, " Standard Technical Specifications for General Electric Boiling Water Reactors (BWR/4)."

TVA has determined that there are no significant hazards considerations associated with the proposed change and that the change qualifies for a categorical exclusion from environmental review pursuant to the provisions of 10 CFR 51.22(c)(9). The BFN Plant Operations Review Committee and the BFN Nuclear Safety Review Board have reviewed this proposed change and determined that operation of BFN Units 1, 2, and 3 in accordance with the proposed change will not ,

endanger the health and safety of the public. Additionally, I in accordance with 10 CFR 50.91(b) (1), TVA is sending a copy l of this letter and enclosures to the Alabama State Department  !

of Public Health.  !

TVA requests that the revised TS in ISTS format be approved and made effective in accordance with the following milestone schedule. However, since the implementation schedule for ISTS may be later than the restart of Unit'2 this coming Fall, approval of the requested TS changes in custom format (TS-353R1) may be necessary to support the installation of the PRNM system on Unit 2.

1 U.S. Nuclear Regulatory Commission Page 4 April 11, 1997 Unit 1 - Effective at the same time as the effective date of ISTS (TS-362).

Unit 2 - Effective at the same time as the effective date of ISTS (TS-362).

Unit 3 - Effective prior to the restart of the Unit 3 in Cycle 9,(November 1998).

Unit 1 is currently in a non-operational status, and TVA has no specific installation schedule for Unit 1. However, since the subject modifications will be installed prior to the return of Unit 1 to service, we are requesting the Unit 1 changes be m&de effective at the same time as TS-362.

If you have any questions about this change, please contact me at (205) 729-2636.

Sipcerely,

/

9 T. E. Ibney Manager of Li sinJ and Industr Affai:ps Enclosures cc: see page 5 Subscribed and sworn yg before me n this U 4h day of\lOn;l 1997.

GAa0 k Oni W Notary Public N

• Ny Commission Expires

U.S. Nuclear Regulatory Commission Page 5 April 11, 1997 Enclosures cc (Enclosures):

Chairman l Limestone County Commission -

310 West Washington Street Athens, Alabama 35611

- Mr. Mark S. Lesser, Branch Chief U.S. Nuclear Regulatory Commission i Region II 101 Marietta Street, NW, Suite 2900 j Atlanta, Georgia 30323 i

l, NRC Resident Inspector i' Browns Ferry Nuclear Plant 10833 Shaw Road i' Athens, Alabama 35611 '

1 Mr. Joseph F. Williams, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Dr. Donald E. Williamson State Health Officer i Alabama State Department of Public Health l 434 Monroe Street

Montgomery, Alabama 36130-3017 i

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