ML18038B389

Notifies of Changes to Info Provided in Util 900316 Response to GL 89-13 & That Actions Necessary to Address GL 89-13 Completed for BFN Unit 2

ML18038B389
Person / Time
Site:	Browns Ferry
Issue date:	08/17/1995
From:	Salas P TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-89-13, NUDOCS 9508220175
Download: ML18038B389 (14)

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SUBJECT:

Notifies of changes to info provided in util 900316 response to GL 89-13

& that actions necessary to address GL 89-13 completed for BFN Unit 2.

DXSTRIBUTION CODE: A065D COPIES RECEXVED:LTR ENCL SIZE:

TXTLE: Generic Ltr 89-13 Svc Water Sys Problems Affecting Safety-Re ated"E' NOTES:

REGULATORY INFORMATION DXSTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9508220175 DOC.DATE: 95/08/17 NOTARIZED: YES DOCKET FACIL:50-259 Browns Ferry Nuclear Power Station, Unit 1, Tennessee 05000259 P

50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee 05000260 50-296 Browns Ferry Nuclear Power Station, Unit 3, Tennessee 05000296 AUTH.NAME AUTHOR AFFILIATION SALAS,P; Tennessee Valley Authority RECIP.NAME RECIPIENT AFFILIATION I

Document Control Branch (Document Control Desk)

RECIPIENT ID CODE/NAME WXLLIAMS,J.

COPIES LTTR ENCL 1

1 RECIPIENT ID CODE/NAME COPXES LTTR ENCL INTERNAL: AEOD/SPD/RAB NRR/DOTS NRR/DRPM/PECB NRR/RSIB EXTERNAL: NOAC 1

1 "1

1 1

NRC PDR 1

~Ply CENTER 1

1 NRR/

-2 1

NRR/DSSA/SPLB 1

1 1

1 1

1 1

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N NOTE TO ALL "RZDS" RECIPIENTS:

PLEASE HELP US TO REDUCE HASTE!

CONTACT THE DOCUMENT CONTROL

DESK, ROOM OWFN 5D8 (415-2083)

TO ELIMINATE YOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED:

LTTR 10 ENCL 10

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Tennessee Valley Authority. Post Office Box 2000. Decatur. Alabama 35609 August 17, 1995 10 CFR 50'4 (f)

U.S. Nuclear Regulatory Commission ATTN:

Document Control Desk Washington, D.C.

20555 Gentlemen:

In the Matter of Tennessee Valley Authority Docket Nos.

50-259 50-260 50-296 U.S. Nuclear Regulatory Commission ATTN:

Document Control Desk Washington, D.

C.

20555 BROWNS FERRY NUCLEAR PLANT (BFN) - RESPONSE TO GENERIC LETTER (GL) 89 SERVICE WATER SYSTEM (SWS)

PROBLEMS AFFECTING SAFETY-RELATED EQUIPMENT The purpose of this letter is to notify NRC of changes to information previously provided in BFN's original response to GL 89-13.

TVA's original response was provided by letter dated March 16, 1990.

The rationale for these changes is described below.

Additionally, this letter notifies NRC that the actions necessary to address GL 89-13 have been completed for Unit 2.

By letter dated February 2,

1994, TVA notified NRC of its intent to perform a self-assessment of the BFN SWS.

TVA submitted a self-assessment plan for NRC approval by letter dated February 16,

1995, and subsequently revised the plan by letter dated March 9, 1995.

NRC approved the plan and gave approval to commence with the self-assessment by letter dated April 4, 1995.

TVA recently completed the self-assessment of the

SWSs, and as a result, discrepancies in the original response to GL 89-13 were identified.

These discrepancies have been documented, evaluated, and dispositioned in accordance with BFN's Corrective Action Program.

'st508220175 950817 PDR ADOCK 05000259 p

PDR

U.S. Nuclear Regulatory Commission Page 2

August 17, 1995 Accordingly, Enclosure 1 is a list of changes to BFN's original response to GL 89-13.

At NRC's request, Enclosure 2

is a chronological listing of correspondence related to GL 89-13.

Additionally, as committed by letter dated March 16,

1990, TVA considers that the above changes complete the actions required by GL 89-13.

The alternate chemical treatment program for RHRSW identified in the September 1,

1993 letter is ccmpleted and functional.

We hereby notify NRC that for Unit 2 the recommended or justified alternative actions of GL 89-13 have been implemented and continuing programs are fully established.

TVA continues to track active commitments related to GL 89-13 for Units 1 and 3.

There are no new commitments in this letter. If you have any questions please contact me at (205) 729-2636.

Si l

Salas Manager of Site Licensing Enclosure cc:

See page 3

Subscribed and sworn to before me on this ~~ day of~> 1995.

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Notary Public Eg CenmMon ExPtr~ goloSlg8 My Commission Expires

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U.S. Nuclear Regulatory Commission Page 3

August 17, 1995 Enclosure cc (Enclosure):

Regional Administrator U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Mr. Mark S. Lesser, Acting Branch Chief U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 NRC Senior Resident Inspector Route 12, Box 637

Athens, Alabama 35611 Mr. J.

F. Williams, Project Manager U.S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Rockville, Maryland 20852

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ENCLOSURE 1

TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS 1 ~

2 g AND 3 LIST OF CHANGES MADE TO BFN S ORIGINAL RESPONSE TO GENERIC LETTER (GL) 89-13 1.

Page 2,

BFN Response to Generic Issue 51, Program A, add the following note (as highlighted):

TVA procedures allow a +/-

25 percent tolerance in the frequency of regular Preventive Maintenance (PM) activities.

2.

Page 3,

BFN Response to Generic Issue 51, Program B, delete the following (as highlighted):

The Residual Heat Removal Service Water (RHRSW) will he modified and incorporated into the existing chemical treatment program, if feasible, or an equally effective alternative will be proposed.

Testing for clam larva is conducted when conditions are conducive to spawning.

Plant procedures require chlorination of the Emergency Equipment Cooling Water (EECW) when clam larva spawning is detected or when a pre-established date is reached.

Chlorination of the EECW is continued until conditions are no longer conducive to clam spawning.

The current program of RHRSW cleaning and flushing appears to be adequate as discussed in BFN response to NRC Recommended Action, Generic Issue 51, Program C.

No macroscopic fouling has been identified to date.

To address RHRSW corrosion, a chemical treatment program is being pursued.

However, the RHRSW is an infrequently used

system, and makeup flow is low.

As such, it may be difficult to maintain an effective chemical concentration.

BFN will establish a test program to determine if chemical treatment is feasible.

The RHRSW will be modified to provide chemical injection points by BFN Cycle 7 operation (BFN is currently in an extended outage and is scheduled to begin Cycle 6 operation hy the end of September, 1990).

Within two months of Cycle 7 operation, TVA will incorporate the RHRSW into the existing chemical treatment program, if chemical treatment of the RHRSW is determined to be feasible.

Otherwise, BFN will propose an equally effective alternative for the NRC Recommended Action in the followup submittal required to confirm implementation of the actions taken in response to the generic letter.

Page 3, first sentence in BFN Response to Generic Issue 51, Program B, add the following (as highlighted):

The current BFN chemical treatment program for EECW and RHRSW satisfies the generic letter.

Page 4, last paragraph in BFN Response to Generic Issue 51, Program C, delete the following (changes highlighted):

The HPFP is not connected to RHRSW or EECW.

Page 4, last sentence in BFN Response to Generic Issue 51, Program C,

change the sentence from the following (changes highlighted):

However, the HPFP is chlorinated twice a year Sentence should now read as follows:

However, the HPFP is chemically treated Page 4, second sentence in BFN Response to Generic Issue 51, Program D, change the sentence from the following (changes highlighted):

The current BFN program for chlorination Sentence should now read as follows:

The current, BFN program for chemical treatment Page 5, last, paragraph in BFN Response to Generic Issue 51, Program D, delete the following (as highlighted)

The current BFN inspection program has been effective in ensuring optimum heat exchanger performance.

This inspection program will be documented in the preventive maintenance program and will be revised to address the shutdown board room coolers and the H~O~ analyzer coolers by December 31, 1990.

Page 5, in diesel generator heat exchanger inspection and cleaning frequency, revise as follows:

Frequency of inspecting and cleaning Diesel Generator Coolers changed from annually to every two years.,

Page 6, paragraph at end of heat exchanger inspection and cleaning frequency, add the following note (as highlighted):

TVA procedures allow a +/- 25< tolerance in the frequency of regular PM activities.

Page 7, (fourth sentence from top of page)

BFN Response to NRC Recommended Action III, change the sentence from the following (as highlighted):

The preventative maintenance instructions for EECW and RHRSW systems will be revised to require notification of the system engineer if any clams, excessive silt, or other blockage is present when the system is opened.

The sentence should now read as follows:

Maintenance work requests for EECW and RHRSW systems will require notification of the system engineer if any clams, excessive silt, or other blockage is present when the system is opened.

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Page 8, (last sentence of page)

BFN Response to NRC Recommended Action V, delete the following (as highlighted):

The instructions are required to be reviewed every 2 years per site procedures.

12.

Page 9, (fifth sentence from top of page)

BFN Response to NRC Recommended Action V, delete the following (as highlighted):

These instructions are required to be reviewed every two years per site procedures.

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ENCLOSURE 2

TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS 1i 2i AND 3 CHRONOLOGICAL L1STING OF CORRESPONDENCE RELATED TO GENERIC LETTER (GL)89-13i "SERVICE WATER SYSTEM PROBLEMS AFFECTING SAFETY-RELATED EQUIPMENT" 2 ~

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9.

10.

NRC issued GL 89-13, dated July 18, 1989 TVA letter to NRC, dated March 16,

1990, "Browns Ferry Nuclear Plant (BFN)

Response

to Generic Letter (GL) 89-13, Service Water System Problems Affecting Safety-Related Equipment" NRC issued Supplement 1 to GL 89-13, dated April 4, 1990 NRC letter to TVA, dated April 23,

1990, "Licensee's

Response

to Generic Letter 89-13 Regarding Service Water Systems (TAC Nos.

73970, 73971, And 73972)"

TVA letter to NRC, dated September 1,

1993, "Browns Ferry Nuclear Plant (BFN) Units 1, 2,

and 3 Proposed Alternate Chemical Treatment Program For The Residual Heat Removal Service Water (RHRSW)

System" TVA letter to NRC, dated February 2,

1994, "Browns Ferry Nuclear Plant (BFN)

Units 1-, 2, and 3

Operating And Maintenance (06M) Cost Reduction Program Request For NRC Review and Approval of Cost Beneficial Licensing Action (CBLA) RLA-03:

Reduced Scope NRC Service Water System Inspection" TVA letter to NRC, dated February 16,

1995, "Browns Ferry Nuclear Plant (BFN)

Units 1, 2,

and 3

Service Water System Operational Performance Inspection (SWSOPI) Self-Assessment Proposal" TVA letter to NRC, dated March 9,

1995, "Browns Ferry Nuclear Plant (BFN)

Units 1, 2,

and 3

Service Water System Operational Performance Inspection (SWSOPI) Self-Assessment Proposal Revision 1" NRC letter to TVA, dated April 4,

1995, "Browns Ferry Nuclear Plant Service Water System Operational Performance Inspection (SWSOPI)

Self-Assessment Proposal" TVA letter to NRC dated July 14,

1995, "Browns Ferry Nuclear Plant (BFN)

Units 1, 2,

and 3

Service Water System Operational Performance Inspection (SWSOPI)

Self-Assessment Report"

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