ML20084C346
| ML20084C346 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 07/31/1983 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20084C342 | List: |
| References | |
| NUDOCS 8404270219 | |
| Download: ML20084C346 (3) | |
Text
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1 STEAM GENERATOR TUBE INSERVICE INSPECTION REPORT SEQUOYAH NUCLEAR PLANT UNIT 2 CYCLE 1 REFUELING OUTAGE July 1983
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Y 8404270219 840424
PDR ADOCK 05000328.
PDR.,
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CONTENTS Inspection Summary Steam Generators Nos. 2 and 3-Table I Table II - Dent Analysis Summary Steam Generator No. 2 Table III - Dent Analysis Summary Steam Generator No. 3.
Identification of Tubes Plugged Table IV
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TABLE I n7 INSPECTION
SUMMARY
SEOUOYAll ~ UNIT.#2 Steam Genera tors # 2 a - # 3 -
S/G #2
- S/G #3 ilOT
' COLD-HOT COLD
'1983 TOTALS LEG LEG LEG LEG a
Tubes 4In-Steam. Generator
- (Straight' Lengths) 13,552 3,388 3,388 3,388' 3,388 TubessInspected 1,289 397 33 462 397
' ' Tubes-Recording.. Severe ~ Damage.
- (Approximate
- Wa11 Loss '4 0%. & Greater) 1 0'
0 0
1 (R2-C94)
Tubes. Recording Moderate Damage-(Approximate Wall Loss 20% to 39%)
0 0~
0 0
0 l Tubes Recording ' Minor.' Damage-(Approximate' Wall' Loss Less Than120%)
0 0
0 0
0
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b TABLE II
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DENT ANALYSIS
SUMMARY
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Sequoyah Unit #2 Steam Generator #2 1983 Hot Cold Total Leo Le6
~ Tubes In Steam Generator (Straight Lengths) 6776 3388 3388 Total Tubes Analyzed
'(Straight Lengths) 383 241 142
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Total Intersections Analyzed 2034 1686 348 Dents 20+ Mils No. of Intersections 0
0 0
Dents 16-20 Mils No. of Intersections 0
0 0
Dents 11-15 Mils No.lof Intersections 0
0 0
Intersections Recording. Initiation of Dents or Magnetite Buildup No. of Intersections-
.126 124.
2 6.2%
'7.4%
0.6%
~~
' Intersections Recording' No Dents Nor
. MOgnetite Buildup
.No. of Intersections' 1908
'1562 346 93.8%.
92.,6%
9,9 ~4 %
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TABLE III DENT ANALYSIS
SUMMARY
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Sequoyah Unit #2 Steam Generator #3 1983 Hot Cold Total Leo Leo Tubes In Steam Generator (Straight Lengths) 6776 3388 3388 Total Tubes Analyzed (Straight Lengths) 601 472 129 Total Intersections Analyzed 2766 2383 383
- Dents 20+ Mils No. of Intersections 0
0 O
Dents 16-20 Mils No. of Intersections 0
0 0
Dents'11-15 Mils No. of Intersections 0-0-
0 Intersections Recording Initiation of ' Dents or Magnetite uildup.
No..of Intersections 131 111 20 4.7%
4.7%
5.2%.
Intersections Recording No Dents Nor-Magnetite Buildup No.'of Intersections 2635
'2272 363 95.3%
-95.3%
94.8%,
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TABLE IV SEQUOYAH UNIT 2 IDENTIFICATION OF TUBES PLUGGED S/G No.
Tube Plug Location Reason 3
R2-C94 Loose part damage re-sulting in primary-to-secondary leak
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