ML20010H352
| ML20010H352 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 07/29/1981 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-79-02, IEB-79-14, IEB-79-2, NUDOCS 8109240378 | |
| Download: ML20010H352 (7) | |
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TENNESSEE VALLEY AUTHORITY 4006h$stnu"tStheE"ToYe O!
July 29, 1981 31/UC 4 AS: l' Mr. James P. O'Reilly, Director Office of Inspection and Snforcement U.S. Nuclear Regulatory Commission Region II - Suite 3100 101 Marietta Street Atlanta, Georgia 30303
Dear Mr. O'Reilly:
OFFICE OF INSPECTION AND ENFORCEMENT BULLETINS 79-02 AND 79 BROWNS FERRY NUCLEAR PLANT 25), -260, -296 In a July 7, 1981 telephone conversation with your staff, TVA was requested to provide additional information and justification 5
regarding our schedule for resolution of these bulletins. Our responses to these questions are provided as an enclosure to this letter. If you have any questions, please call Jim Domer at FTS 857-2014.
s To the best of my knowlege, I declare the statements contained herein are complete and true.
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Very truly yours, M
'(/fb' TENNESSEF '.' ALLEY AUTHORITY
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L. M. Mills, Panager E-4 Nuclear Regulation and Safetf f
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.;.r-ENCLOSURE OIE BULLETINS 79-02 AND 79-14 REQUEST FOR ADDITIONAL INFORMATION 1
BROWNS FERRY..: LEAR PLAF,lT (DOCKET NOS. ra-259, -260, -296)
Question 1 _
Provide a ditailed status of the work remaining on a system-by-system basis.
Inuicate any modifications that will be required and if any reinspections vill be necessary.
Response
Table 1 gives a detailed listing of the remaining work for IE Bulletin 79-14.
The table is a system-by-system status of the inspection program which reflects first and second inspections. Supports are used as the basis since valves, line and grade, penetration, support, etc., are all inspected as supports are inspected on a piping run. There are no outstanding emergency modifications (i.e., those which rre handled within plant technical specification requirements) and none have been identified in approximately five months.
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In addition to Table 1 we have also prepared a listing (Tablo 2) by system of the remaining efforts for IE Bulletin 79-02 inspections.
Question 2 Describe how we are prioritizing the remaining work.
Response
Theremainingworkhasbeenscheduledtobestfacilitatetwolong-teEA
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programs'(IE Bulletin 79-14 and torus integrity) currently ongoing at Browns Ferry, based on best utilization of manpower. Accessible piping on unit 3 is currently being inspected because of this unit's upcoming torus modifications this fall. Also, unit 3 requires the least amount of inspection work to complete our field efforts. This will allow for overlapping of the reanalysis for long-term torus integrity and IE Bulletin 79-14.
Unit 1 inaccessible piping is also being inspected currently because the unit is shut down for a refueling outage. These inspections are
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considered to be of equal priority to the unit 3 inspections. Accessible I
piping on unit 1 will complete these inspections for this unit allowing reanalysis to begin and, therefore, is the next priority.
Due to thd large amount of inspection work remaining, along with its extended schedule for torus integrity work, unit ? accessible piping inspections are our last priority.
l The remaining IE Bulletin 79-02 inspections are being worked concurrent with the unit outages (unit 1 currently, unit 3 will follow, and finally unit 2).
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Question 3 Indicate whether or not_.the required inspection (all inspect ons, reinspections, etc.) will be completed during Phase I.
Respense All of the inspection work as it is currently defined will be completed during Phase I.
Any clarification-type questions on inspection results transmitted to the Division of Engineering Design will be handled on a case-by-caso basis. These are considered to be small in number and will not be part of the inspection work of Phase I.
Question 4 Will item 3 above be complete for unit 1 before startup from the current refueling outage?
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Response
Based on the outage schedule, item 3 for unit 1 will not be completed before startup from the current refueling outage. The inaccessible portion of the inspection effort will be completed before startup from the current refueling outage.
Question 5 Define and provide further justification for our. statement that most, if not all, of the significant safety problems (those that have the possibility of affecting the pressure boundary integrity) will be corrected within this time period.
Response
All known significant safety problems (those that have the possibility of affecting the pressure boundary integrity) will be corrected within this time period. When the inspections are completed, all of the known significant safety problems will be corrected. The term "known" is injected into the phrase because after the Phase II analysis begins, a l
significant safety problem may be detected. TVA considers this possibility as being very minute. Even though minute, in the event of this possibility, TVA will take appropriate action in accordance with facility technical specifications.
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TABLE 1
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IE BULLETIN 79-14 Supports Percent Supports Percent Requiring Complete Requiring _ Complete No. of First First Second Second Unit No.
. System 7 Supports Inspection Inspection Inspection Inspection 1 ~
Core Spray 160 0
100 0
100 2
Core Spray 160 144-10 3
Core Spray 160 0
100 144 10 1
CRD 100 0
100 12 88 2
CRD 106 0
100 0
- 00 3
CRD 89 0-100 0
100 1
100 30 0
100 30 0
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1 DW & Torus Purge 94 0
100 0
100-DW & Torus Purge 100 100 0
DW & Torus Purge 101 0
100 0
100 1
100 0-100 2
0 100 0
100 3
16 0
100
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100
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1 Torus Spray Header 16 0
100 0
100 2
Torus Spray' Header-16
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0 100
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0 100 f
3 Torus Spray Header 16 0
100 0
100 1
DW Control Air 41 36 12
-2 DW Control Air 41 36 12 i
3 DW Control Air 41 0
100 0
100 1
EECW 269 0
100
- 269 0
l 2
EECW 269 188 30 61 77
'3 EECW 269 89 67 180 33 1
Feedwater 36 0
100 0
100 2
Feedwater 40 0
100-0 100 3
Feedwater 36 0
100 0
100
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. TABLE 1 s
IE BULLETIN 79-14 Supports Percent Supports. -Percent Requiring Complete Requiring Complete Je No. of First
. First Second Second Unit No.
System' Supports Inspection Inspection Inspection Inspectic 1
Fuel Pool Coolant
.134 0
100 134 0
2 Fuel Pool Coolant 134 127 4
3 Fuel Pool Coolant 118 0
100 0-100 1
HPCI 132 0
100 132 0
2 HPCI 132 107 19 3
HPCI 132-0 100 0
100 1
Main Steam 115 0
100 115 0
2 Main Steam 118 0
100-0 100 3-Main Steam '
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115 0
100 0
100 1
Torus Ring Header 23 0
100 9
100 2
Torus Ring Header 24 0
100 0
100 3
Torus Ring Header 30 0
100 0
100 i
1 RBCCW 184-0 100 184-0 i-2 RBCCW 184 0
100 103 45 3
RBCCW 184 0
100 184 0
1 RCIC 77 0
100 62 20 2
RCIC 77 10 87 52
~32 3
RCIC 77 0
100 0
.100 1
Recirculation 61 0
100 61-0 2
Recirculation 39.
C 100 0
100 3
Recirculation 61 0
100 0
100 1
RHR-296 0
100 296 0
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2 RilR.
296 260 12 3
RHR 296 104 65 156 47 4
1 RHRSW 50 5
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90 45 10 2
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'40 13 'T 6
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3 RHRSW-14 6 0
.100 0
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IE BULLET 1N'79-14 Supports Percent Supports Percent Requiring Complete Requiring Complete
'i No. of First
-First Second Second Unit No.
System Supports Inspec1*on Inspection Inspection Inspection 1-RWCU 15 0
100 15 0
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RWCU 7
0 100 0
100 3~
RWCU 14 0
100 0
100 1
R2dwaste S/P Disch.
73 0
100 73 0
2 Radwaste S/P'Disch.
73 23 68 35 52 3
Radwaste S/P Disch.
73 0
100 58 21 1
Rx Dr & Vents 20 0
100 20 0
2 Rx Dr & Vents
-20 0
100
'O 100 3
Rx Dr & Vents 21 0
100 0
100
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SGT 24 0
100
.24 0
2 SGT 19 0
100.
19 0
3 SGT
, 13 0
100
-0 100 1
SLC 76 0-100 76 0
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SLC 76 0
100 60 22
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3 SLC 76 0
100 c-0~
100
' * - Revised Number (None identified on this submittal.)
No. of supports inspected is based on official transmittal of data to EN DES.
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TABLE 2 IE BULLETIN 79-02 SUPPORTS REQUIRING INSPECTION SYSTEM UNIT 1 UNIT 2 UNIT 3 RilR
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RiiRSW 1
0 7
IIPCI 0
0 1
CS 9
0 0
RCIC 2
1 0
RBCCW 3
15 6
SBGT 2
0 0
RWSP Disc.
1 0
9 1
0 3
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PSC IIcader 2
0 0
CRD Return 0
0 0
FPC 0
0 0
EEGI C
0 15 SLC
,0 0
0 RWCU 0
0 0
llVAC 0
0 0
DW6TP 0
0 0
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