ML20129G021

Follow-up Response to GL 94-02, Long-Term Solutions & Upgrade of Interim Operating Recommendations for Thermal Hydraulic Instabilities in Bwrs

ML20129G021
Person / Time
Site:	Grand Gulf
Issue date:	10/18/1996
From:	Hagan J ENTERGY OPERATIONS, INC.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-94-02, GL-94-2, GNRO-96-00086, GNRO-96-86, NUDOCS 9610290280
Download: ML20129G021 (6)

Text

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,e Enttrgy Oper tions,Inc.

P.O. Box 756 d Port Gibson. MS 39150 Tel 601437 6408

, Fax 601437 2795 Joseph J. Hagan l October 18, 1996 $6f,'llld*"

j Grand Gulf Naclear Station U. S. Nuclear Regulatory Commission

, Document Control Desk Mail Stop P1-37

) washington, D.C. 20555

Subject:

Grand Gulf Nuclear Station Docket No. 50-416 License No. NPF-29 Follow Up Response to Generic Letter 94-02, "Long-  !

Term Solutions and Upgrade of Interim Operating Recommendations for Thermal Hydraulic Instabilities in Boiling Water Reactors Commitment Revision References Letter C. R. Hutchinson to the U. S. Nuclear Regulatory Commission, dated September 7, 1994,

" Response to Generic Letter 94-02 .

GNRO-96/00086 Gentlemen:

Generic Letter (GL) 94-02, which was issued July 11, 1994 requested that licensees submit a plan describing the long-term stability solution option selected for their facility and ,

the proposed implementation schedule for modification of plant '

protection systems to install the solution.

In our September 7, 1994 response to GL 94-02, GGNS committed f

to have the selected long-term stability solution (Enhanced Option I-A) installed and operational 6 months following l startup from the 8th refueling outage (Expected installation by the 2nd quarter of 1997). The committed installation date j accounts for receipt of the hardware and software applications consistent with a schedule which supports GGNS' testing of the solution's lead hardware prior to full implementation. This testing phase includes provisions for a planned plant shutdown and start up evolution to augment the ecliection and evaluation of operational data, followed by installation of the permanent long-term solution.

9610290280 961018 PDR ADOCK 05000416 p PDR

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October 18, 1996 GNRO-96/00086 l Page 2 of 5 i

Our response went on to state that it was GGNS' objective to evaluate the stability. solution generic Technical

} Specifications against the NRC's Final Policy Statement on j Technical Specification improvements of July 16, 1993 and j submit any identified changes for NRC approval by the last quarter of 1996.

Unanticipated delays in the design, development, and testing l of the hardware and software required to suppett the solution I 5

concept, coupled with delays in the finalization of supporting i analyses, have necessitated that GGNS revise its cammitted

! solution implementation date from 6 months following startup l 4

from the 8th refueling outage (2nd Quarter 1997) to 6 months i

following startup from the 9th refueling outage (4th Quarter

1998). We understand that the Staff is aware of the Enhanced

- Option I-A development-schedule changes and additionally, this  ;

! commitment revision has previously been discussed with GGNS' NRC project manager.

Consistent with our revised implementation schedule, any i

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Technical Specification changes required are expected to be submitted for Staff approval by the 2nd quarter of 1998. As 1 included in our September 7, 1994 response, this submittal I schedule assumes a 6 month review period for issuance of the

! Staff's safety evaluation report.

i The administrative provisions delineated in NRC Bulletin 88-07 i Supplement 1 and applicable Interim Corrective Action (ICA) i recommendations published by the BWR Owners Group will remain

in place until the long term stability solution is implemented

! at GGNS. These administrative provisions provide confidence that power oscillations will be avoided or adequate guidance

is available to detect and suppress oscillations should they i

occur.

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. . j October 18, 1996 i GNRO-96/00086  !

Page 3 of 5 As committed in our' September 7, 1994 response and in ,

accordance with Reporting Requirement 2 of GL 94-02, we will l provide written confirmation to the Staff within 30 days following completion of the actions specified by the generic letter.

This information is being submitted under affirmation in accordance with 10 CFR 50.54 (f) (httachment 1) . Should you have any questions or require additional clarification regarding this matter,-please contact Charles E. Brooks at (601) 437-6555.

Your truly, y

J JJH/CEBac attachments: 1) rmation of the GGNS Response to Follow Up response to Generic Letter 94-pursuant to 10CFR50. 54 ( f) cc: See Next Page 6

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1 October 18, 1996 GNRO-96/00086 Page 4 of 5 cc Mr. R. B. McGehee (w/a)

Mr. N. S. Reynolds (w/a)

Mr. J. E. Tedrow .(w/a)

Mr. H. L. Thomas (w/a) ,

Mr. J. W. Yelvertson (w/a) I Mr. L. J. Callan (w/a)

Regional Administrator J U. S. Nuclear Regulatory Commission j Region IV  !

611 Ryan Plaza Drive, Suite 400 j Arlington, TX 76011 Mr. J. N. Donohew, Project Manager (w/2)

Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 13H3 Washington, D. C. 20555 Mr. Mike May PECO Energy M/C 62A-5 ,

925 Chesterbrook Wayne, PA 19080

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i Attachment 1 to j

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GNRO-96/00086 i

1 Follow Up Response to i

j Generic Letter 94-02

( Long-Term Solutions and Upgrade of Interim Operating s

Recommendations for Thermal Hydraulic Instabilities in Boiling Water Reactors

Af firmation Per 10CFR50.54 (f) ,

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, *GNRO-96/00086 BEFORE THE l l

UNITED STATES NUCLEAR REGULATORY COMMISSION i

a LICENSE NO. NPF-29 l

DOCKMT NO. 50-416 .

l IN THE MATTER OF MISSISSIPPI POMER & LIGHT COMPANY and l SYSTEM ENERGY RESOURCES, INC.

and SOUTH MISSISSIPPI ELECTRIC PONER ASSOCIATION and ENTERGY OPERATIONS, INC.

l AFFIRMATION I, J. J.-Hagan,'being duly sworn, state that I am Vice President, Operations GGNS of Entcrgy Operations, Inc.; that on behalf of Entergy Operations, Inc., System Energy Roccurces, Inc., and South Mississippi Electric Power Association, I am authorized by Entergy Operations, Inc. to sign and file with the Nuclear Regulatory Coestission, this follow up response to Generic Letter (GL) 94-02 for Grand Gulf Nuclear Stations that I

. signed this follow up response to GL 94-02 as Vice President, Operations GGNS of Entergy Op: rations, Inc., and that the statements made and the matters set forth therein are true end correct to the best of my knowledge,'informat on and belief.

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STATE OF MISSISSIPPI COUNTY OF CLAIBORNE SUBSCRIBED AND SNORN TO before me, a Notary Public, in and for the County and State above named, thir #

LS day of September, 1996.

AA _ %.0_o N Notary Public MNDMED STATEWCEMOTANPU3UC EXZ3 JAC. 27,2003

-*C TC STECOL fl0TCY $1Wr_.I

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