ML20053B460
| ML20053B460 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 12/31/1981 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20053B393 | List: |
| References | |
| NUDOCS 8205280424 | |
| Download: ML20053B460 (5) | |
Text
Browns Ferry Nuclear Plant Unit 2 In-Service Inspection In accordance with paragraph 15622.3 of Section XI of the ASME Boiler and Pressure Vessel Code (1971 edition through Summer 1971 addenda),
the following information is provided.
1.
Date: December 1981 2.
Name of owner and address of corporate of fices:
Tennessee Valley Authority Chattanooga, Tennessee 37401 3.
Name and address of nuclear generating plant in which the nuclear plant unit is located:
Browns Ferry Nuclear Plant P. O. Box 2000 Decatur, Alabama 35601 l
4.
Name or number assigned to the nuclear power system by the owner:
Browns Ferry Nuclear Plant unit 2 5.
Commercial service date assigned to the nuclear power system by the owner:
March 1, 1975 6.
Gross generating capability assigned to the nuclear power station by the owner:
1,098 MWe 7.
The number assigned to the " boiler," " pressure vessel," or components of the nuclear power system by the state or municipality:
l Does not apply 8.
National board number assigned by the manuf act urer t o the "boller,"
" pressure vessel," or components of the nuclear power system:
No number assigned
[
9 Name of the component or part of the component of the nuclear power
(
system for which this is a record, including such information regard-ing size, capacity, material, and location as may aid accurate identification (this may include drawing references if they may be of assistance):
The components examined as part of this in-service inspection are listed in the abstract.
8205280924
1 10.
Name of the manufacturer of the component or nart of the nuclear power system for which this is a record, including the manufacturer's corporate of fices or the manufacturing plant locations as may aid in gaining access to the manufacturer's records regarding the com-ponent or part which the manufacturer is maintaining in accordance with requirements of the ASME Boiler and Pressure Vessel Code,Section III, Nuclear Power Components:
The majority of the components examined were supplied by:
General Electric Company Atomic Power Equipment Department San Jose, California 95103 under TVA Contract No. 66C60-90744 11.
Dates of the in-service inspection: May 15-17, 1979 12.
Name of the inspectors:
The Tennessee Valley Authority acts as its own inspectors.
13.
Name and mailing address of the employers of the inspectors:
Tennessee Valley Authority 1630 Chestnut Street Tower 11 Chattanooga, Tennessee 37401 14.
Abstract of inspections performed, conditions observed, and corrective measures recommended and taken.
Refer to the attached scan plan for weld numbers and conditions observed. The examinations were performed by Lambert, MacGill, Thomas, Incorporated, and TVA personnel.
No repairs were necessary as a results of these examinations.
I
~.
TABLE VI (Continued)
SYSTEM COMPCNENT f SCAN LOCATION METAL PATH
% DAC REMARKS R-008 Recirc.
NZB SE/THSL 3
360 I.D.
33%
Geometry From Thermal Sleeve.
3 360 0.D.
63%
0.D. Geometry 4
360 I.D.
100%
Geometry from Safe End Slope.
R-009 Recire.
NZC SE/THSL 3
360 I.D.
<40%
Geometry from Thermal Int.
3 360 0.D.
<40%
0.D. Geometry Int.
DAC 4
360 I.D.
100%
Geometry from Safe End DAC Taper
'l R-010 Recirc.
NZD SE/THSL 3
360 I.D.
32%
Geometry from Thermal Int.
3 360 0.D.
64%
0.D. Gecmetry Int.
4 360 I.D.
100%
Geometry from Safe End Taper R-Oll Recirc.
Valve Stems -
No Apparent Discontinuities 868-77,68-79, 68-1,68-3, 68-33, 68-35.
)
l TABLE VI (Continued)
SYSTEM COMPONENT'i SCAN LOCATION METAL PATH t DAC REMARKS i
R-004 Recirc.
NZJ SE/THSL 3
360 I.D.
41%
Thermal Sleeve Geometry 4
360 I.D.
>>1004 Geometry from Safe End Slope.
R-005 Recirc.
NZH SE/THSL 3
360 1.15" M.P.
35%
Thermal Sleeve Geometry Int.
3 360 0.D.
41%
0.D. Geometry Int.
Surface 4
Geometry From Safe End Slope.
R-006 Recirc.
NZE SE/THSL 3
360 I.D.
12%
Thermal Sleeve Geometry Int.
4 360 I.D.
>>1001 Geometry From Safe End Slope.
R-007 Recirc.
NZA SE/THSL 3
360 I.D.
<20%
I.D. Geometry 4
360 I.D.
>>1004 Geometry From Safe End Slope.
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TABLE VI EVALUATIONS Summarized ISI Results WELD OR RPT.
SYSTEM COMPONENT #
SCAN LOCATION METAL PATH t DAC REMARKS R-001.
Recirc.
NZF SE/THSL 3
360 0.D.
64%
Geometry (Finger Damping)
Surface 3
360 I.D.
<20%
Thermal Sleeve Geometry 4
360 I.D.
>>1001 Geometry Due to Safe end Slope.
R-002 Recirc.
NZG SE/THSL 3
360 I.D.
54%
Thermal Sleeve Geometry 3
@ 8:30 0.D.
50%
0.D. Geometry Finger Surface Damped 4
360 I.D.
>>1001 Geometry Due to Safe end Slope.
R-003 Recirc.
NZK SE/THSL 3
360 O.D.
O.D.
Geometry Int.
Surface 4
360 I.D.
>>1001 Geometry Due to Safe end DAC
- Slope, e
..