ML20072U201
| ML20072U201 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 09/07/1994 |
| From: | Shell R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9409160164 | |
| Download: ML20072U201 (5) | |
Text
.
4 A
Tennessee Vahey Aumonfy Post 0+'rce Box 2000 Soddy-Daisy Tennessee 37379 September 7, 1994 U.S. Nuclear Regulatory Commission ATTN:
Document Control Desk Washington, D.C. 20555 Gentlemen:
In the Matter of
)
Docket No. 50-327 Tennessee Valley Authority
)
SEQUOYAH NUCLEAR PLANT (SQN) - UNIT 2 STEAM GENERATOR (S/G) TUBE PLUGGING As required by SQN Technical Specification 4.4.5.5.a, this submittal provides notification of S/G tube plugging during the Unit 2 Cycle 6 refueling outage.
The in-service inspection of the S/G tubes was completed on August 24, 1994. TVA will submit a special report of the I
results of this inspection on or before August 24, 1995.
Enclosed is a summary of the tubes plugged in Unit 2 during this outage.
Please direct questions concerning this issue to D. V. Goodin at (615) 843-7734.
Sincerely, An.JM R. H. Shell Manager i
l SQN Site Licensing l
Enclosure cc: See page 2 i
i i
l
-ns\\'OG l
9409160164 940907 i
PDR ADOCK 05000327 f
P PDR l
Ol 4
~._.
n q
j I
U.S. Nuclear Regulatory Commission j
_ Page 2 September 7, 1994 1
Enclosure
(
cc (Enclosure):
Mr. D. E. LaBarge, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852-2739 NRC Resident. Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road i
Soddy-Daisy, Tennessee 37379-3624 Regional Administrator U.S. Nuclear Regulatory Commission Region II
'101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323-2711 l
l l
m
--m v
w w
_q l
O d
e ENCLOSURE SEQUOYAH NUCLEAR PLANT UNIT 2 CYCLE 6 REFUELING OUTAGE STEAM GENERATOR TUBE PLUGGING
SUMMARY
(S57 940902 941)
- 9' I Steam Generator (S/G) Tube Plugging Ust Sequoysh Nuclear Plant.
Unit 2 Cycle 6 S/G ROW COL LOCATION REASON FOR PLUGGING 1
1 16 sal H07+7.11 U-BEND PWSCC 1
26 sal H07+7.04 U-BEND PWSCC 1
36 SAI H07+2.87 U-BEND PWSCC 1
38 sal H07+2.79 U-BEND PWSCC 1
45 sal H07+6.84 U-BEND PWSCC 1
55 SAI H07+2.89 U-BEND PWSCC 1
61 SAI H07+2.81 -
U-BEND PWSCC 1
72 SAI H07+2.95 U-BEND PWSCC 1
74 SCI H07+5.62 U-BEND PWSC,0 SCI H07+5.98 U-BEND PWSCC SCI H07+7.19 U. BEND PWSCC 1
85 sal H07+3.03 U-BEND PWSCC -
SCI H07+ 5.33 U-BEND PWSCC SOI H07+ 5.00 U-BEND PWSCC 1
87 sal H07+2.80 U-BEND PWSCC f
1 88 SAI H07+3.30 U-BENn PWSCC SCI H07+5.31 U-BEND PWSCC 1
90 sal H07+3 00 U-BEND PWSCC 1
92 SAI H07+7.09 U-BEND PWSCC 2
1 2
sal H07+7,16 U-BEND PWSCC 1
11 SAI H07+2.56 U-BEND PWSCC 1
19 SAI H07+2.87 U-BEND PWSCC 1
32 sal H07+2.80 U-BEND PWSCC I
SA!
H07+ 2.91 U-BEND PWSCC 1
39 SAI H07+2.S8 U-BEND PWSCC 1
42 SA!
H07+2.50 U. BEND PWSCC 1
49 MAI H07+2.87 U-BEND PWSCC 1
50 SCI H07+5.19 U-BEND PWSCC SCl H07+6.33 U-BEND PWSCC 1
51 MA1 H07+ 7.15 U-BEND PWSCC 1
52 SCI H07+6.17 U BEND PWSCC 1
53 mal H07+7.60 U-BEND PWSCC 1
63 sal H07+7.16 U-BEND PWSCC 1
65 SAI H07+7.10 U-BEND PWSCC l
1 67 SCI H07+4.01 U-BEND PWSCC 1
68 SCI H07+5.25 U-BEND PWSCC 1
7S sal H07 + B.2B U-BEND PWSCC 1
79 sal H07+8.21 U-BEND PWSCC 1
80 sal H07+2.95 U-BEND PWSCC I
1 86 sal H07+7.48 U-BEND PWSCC 1
87 sal H07+2.76 U-BEND PWSCC 1
89 sal H07+7.23 U-BEND PWSCC SAI H07+ 5.10 U-BEND PWSCC 1
93 SCI H07+7.19 U-BEND PWSCC
]
SCl H07+6.83 U-BEND PWSCC SCI H07+6.43 U BEND PWSCC 3
44 sal HTS 1.02 TTS PWSCC 7
49 sal HTS-1.14 TTS PWSCC 8
57 SAI HTS-1.45
TS PWSCC 8
59 sal HTS.22 TTS PWSCC 8
,.w
l Staam Generator (S/G) Tube Plugging List
+
Sequoyah Nuclear Plant und 2 Cycle 6 S/G ROW COL LOCATION REASON FOR PLUGGING 1
l 2
75 SAI HTS.96 TTS PWSCC 12 19 SAI HTS-1.43 TTS PWSCC 16 73 SAI HTS.10 TTS PWSCC 21 37 61 H01 +42.53 OD INDICATION 22 38 sal HTS.75 TTS PWSCC
' 24 67 41 AV2 14 AVB WEAR i
42 AV3.29 AVB WEAR 25 54 sal HTS.96 TTS PWSCC 32 SS 40 AV3.18 AVB WEAR 34 64 41 AV2+.00 AVB WEAR 3
1 1
1 7
MAI H07+7.30 U-BEND PWSCC
)
1 13 sal H07+7.37 U-BEND PWSCC l
1 14 SAI H07+7.36 U-BEND PWSCC i
1 32 SAI H07+3.74 U-BEND PWSCC l
1 34 SAI H07+4.16 U BEND PWSCC l
1 35 SAI H07+3.53 U-BEND FWSCC l
1 43 SCI H07+7.48 U-BEND NWSCC 1
44 SCI H07+7.46 U-BEND PWSCC i
54 sal H01 +.17 TSP ODSCC 13 8
SAI H01 +.19 TSP ODSCC 14 50 SA!
HTS-1.03 TTS PWSCC j
17 30 MAI H01 +.19 TSP ODSCC 19 7
sal H01 +.19 TSP ODSCC 23 21 SAI HTS.39 TTS PWSCC 23 28 SAI '
HTS-1.17 TTS PWSCC i
32 16 48 C01 +.00 C/L WASTAGE 44 62 39 C01.24 C/L WASTAGE 45 36 42 C01.05 C/L WASTAGE 4
8 46 SAI H01 +.23 TSP ODSCC 28 69 sal H01 +.17 TSP ODSCC TOTALS S/G 1 - 14 S/G 2 - 39 S/G 3 20 S/G 4 - 2 DEFINITIONS AV2 Second anti-vibration bar above hot leg ODSCC Outside Diameter Stress Corrosion AV3 Third anti-vibration bar above hot leg PWSCC Primary Water Stress Corrosion Cr C01 First support plate - cold leg sal Single AxialIndication H01 First support plate - hot leg SCI Single Circumferentia: Indication i
H07 Seventh support plate - het leg TSP Tube Support Plate
(
HTS Top of tubesheet - hot leg TTS Top of Tubesheet j
mal Multiple Axia!Indicatens l
l
.