ML19270H731
| ML19270H731 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 12/14/1979 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-79-14, NUDOCS 8001020721 | |
| Download: ML19270H731 (9) | |
Text
8 TENNESSEE VALLEY AUTHORLTY..
CH ATTANOOG A. TENNESSEE 37401' O' W 400 Chestnut Street Tower II Nd
^ r r: l e
.: 20 December 14, 1979 Mr. James P. O'Reilly, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region II - Suite 3100 101 Marietta Street Atlanta, Georgia 30303
Dear Mr. O'Reilly:
OFFICE OF INSPECTION AND ENFORCEMENT BULLETIN 79 RII:JP0 50-259, -260, -296 - BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 In response to verbal requests from your staff, we are providing you with the first in a series of monthly reports updating your staff on the progress of work related to OIE Bulletin 79-14 at the Browns Ferry Nuclear Plant.
It is anticipated that these reports will be transmitted to you by the tenth day of each month.
If you have any questions regarding this matter, please get in touch with Jim Domar at FTS 854-2014.
Very truly yours, TENNESSEE VALLEY AUTHORITY (N j L. M. Mills, Man ger Nuclear Regulation and Safety Enclosure o
5 167 A 269
..g4
.v-An Equal Opportunity Employer
---y 1 #
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8001020
ENCLOSURE IE BULLETIN 79-14 PROGRESS REPORT ATTACletENT'1 REPRESENTS OVERALL PERCENTAGE COMPLETION OF 79-14 AT BROWNS FERRY
- ATTACIDIENT 2 REPRESENTS VALVE INSPECTIONS M;D PIPE SUPPORT (11ANGAR) INSPECTIONS WITil I) NUMBER INSPECTED II) NUMBER DEVIATIONS III) SIGNIFICANT DEVIATIONS IV) NUMBER REPAIRED ATTACIDIENT 3 REPRESENTS AN ANALYSIS STATUS OF THOSE INSPECTIONS COMPLETED
- if no percentage is written, then that means not applicable e
1674 270
Page 1 of 2 ATTACllMENT 1 tNIT 1 UNIT 1 UNIT 2 UNIT 2 UNIT 3 UNIT 3 s
SYSTEM ACCESSIBLE INACCESSIBLE ACCESSIBLE INACCESSIBLE ACCESSIBLE INACCESSIBLE Main Steam 0%
0%
100%
Feedwater 0%
0%
100%
RilRSW 97%
0%
0%
SLC 10%
0%
0%
0%
100%
100%
IIcad Spray 0%
0%
100%
Recircu-lation 0%
0%
100%
RBCCW 10%
0%
0%
0%
5%
100%
RWCU 0%
0%
0%
0%
0%
100%
Core Spray 99%
0%
0%
0%
25%
100%
EECW 75%
75%
0%
. 100%
0%
0%
0%
96%
100%
RilR 90%
0%
0%
0%
60%
100%
RCIC 100%
0%
60%
0%
100%
100%
1674 27I
Page o
i I
miIT 1 mi1T 1 mi1T 2 mi1T 2 mi1T 3 mi1T 3 SYSTDi ACCESSIBLE INACCESSIBLE ACCESSIBLE INACCESSIBLE ACCESSIBLE INACCESSIBLE l
lCRD 0%
0%
0%
0%
100%
100%
ID.W. 6 Torus Purge
'Pipinn 100%
0%
40%
Secondary Cont.
50%
0%
0%
FPC 70%
0%
0%
0%
0%
0%
Contain-ment &
Suppres.
Chamb. R.ll, 0%
0%
100%
RCW 100%
40%
30%
SGT 100%
95%
95%
Ring lleader CSS 100%
0%
100%
0%
0%
0%
100%
100%
Rx Floor Drain Sump Pump Disc.
Tincy 100%
0%
100%
Rx Ilcad Ven't 0%
0%
100%
Rx Drain 0%
0%
100%
1674 2/2
Valv6 Inspections l-NO.
NO. WITil SIGNIFICANT NO.
UNIT SYSTEM INSPECTED DEVIATIONS DEVIATIONS REPAIRED TO DATE 3
RBCCW 38 0
0 0
1 Core Spray 61 1
0 0
3 CRD 3
0 0
0 D.W. & Torus 1
Purge Piping
'9 0
0 0
3 Feedwater 4
0 0
0 1
FPC 34 0
0 0
1 HPCI 19 0
0 0
3 ITCI 21 0
0 0
Main 3
S t eara 4
0 0
0 1
RCIC 15 0
0 0
3 RCIC 14 0
0 0
3 Recirc 6
0 0
0 1
RilR 32 0
0 0
2
-RilR 2
0 0
0
~
3
- RilR 30 1
0 0
0 0
0 3
RWCU 6
1674 273
Pipe Support Inspections NO.
NO. WITH SIGNIFICANT NO.
UNIT SYSTEM INSPECTED DEVIATIONS DEVIATIONS REPAIRED TO DATE D.W. & Torus 1
Purge Piping 31 5
0 5
CSS 1
Ring Header 27 5
0 1
1 RHRSW 41 31 5
5 1
RCW 5
5 0
2 1
EECW 11 11 0
5 1
P3CCW 111 65 0
40 1
RCIC 53 17 0
4 1
IECI 72 41 0
18 1
RHR 190 59 2
49 1
FPC 93 44 0
4 1
Core Spray 59 54 0
6 1
SLC 2
2 0
0 m
o e
4 1674 274
Pine Support Inspections NO.
NO. WITH SIGNIFICM;T NO.
UNIT SYSTEM INSPECTED DEVIATIONS DEVIATIO:;S REPAIRED TO DATE 2
RllR 3
0 0
0 2
RHRSW 7
3 1
3 2
EECW 5
5 0
1 2
RCW 2
2 0
0 PSC 2
Ring Header 3
0 0
0 2
HPCI 1
0 0
0 1674 275 e
e
e io
. t NO.
NO. WITH SICNIFICA'iT NO.
UNIT SYSTEM INSPECTED DEVIATIO:;S DEVIATIO:;S REPAIRED TO DATE 3
CRD 9
0 0
0 3
SLC 3
0 0
0 3
Recire 46 0
0 0
3 RBCCW 33 16 0
7 Main 3
Steam 91 33 0
1 3
RWCW 13 4
0 1
3 Feedwater 36 7
0 6
3 RilR 97 13 0
6 3
R11RSW 6
0 0
0 3
EECW 5
5 1
1 3
RCIC 54 24 0
0 3
5 0
0 3
RCW 1
1 0
0' 3
IIPCI 74 23 2
1 m
b s
e 9
d ATTACHMENT 3 In addition to the "significant deviations" discovered during Bulletin 79-14 inspections, four deviations which were discovered during Bulletin 79-02 inspections and evaluated asBulletin 79-14 problems, also affected system function. These are tabulated below Unit System No. of Significant Deviations 2
HPCI 3
3 HPCI 1
A nonconformance was recently discovered as scismic support R-16 on RHRSW in unit 1 due to its inability to carry lateral load. Subsequent review revealed this support to be a recommended typical in the EECW system. A followup site inspection of the EECW system was performed by design personnel. Based on that inspection, TVA's initial judgement is that there is no safety problem. A typical and worst case line will be rigorously analyzed to ierify that judgement.
The August 15, 1979, Supplement to 1E Bulletin 79-14 permits utilitics to reanalyze using either the original analytical techniques or alternate, conservative techniques.
TVA is presently evaluating its original analytical techniques to de craine the best method of reanalysis.
1674 277
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