ML20138N674
| ML20138N674 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak, 05000000 |
| Issue date: | 03/29/1984 |
| From: | Bielfeldt L TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Abramson L, Lurie D NRC |
| Shared Package | |
| ML20138M609 | List:
|
| References | |
| FOIA-85-59 NUDOCS 8511050295 | |
| Download: ML20138N674 (4) | |
Text
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TEXAS UTILITIES GENERATING COMi%NY
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i March 29,1984 s
Drs. L. R. Abramson and 'D. Lurie Applied Statistics Branch U. S. Nuclear Regulatory Commission Washington, D.C.
20555 Doctors:
Attached please find a complete copy of the infont.ation you requested regarding the results of the protec'tive coatings backfit inspection p rog ram. All estima"er are totise'rvative, i.e., they have been estimated in such a manner as to result in a larger amount of coatings on the exempt log than necessary.
If you have any ouestions, I may be contacted at (817) 897-2981, Ext. 327 or (214) 979-8855.
c.A_ b c/b LTM. Bielfeldp Quality Engineering Supervisor LMB /bli Attachment
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PDR FOIA GARDE 85-59 PDR A tot, c mse ns 0 09' 7t'b e m E "TJ 8.0 78 L e 1.L901Nat t t e 60 0*4 % 9
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af FURTHER DAT A RE0VIREMEriT5 FOR At;ALYSIS OF PROTECTIVE C0ATIfiG BACKFIT IriSPECT10fi PROGRAM
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1.
Concrete (Units 1andy 9ff upp4 c <-
s A.
Total size (estimate):
570, 000 sq. ft.
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B.
Total # adhesion tests:,.-2E22
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Total # adhesion test failures p ! gg( D*
C.
p D.
Total # recorded dft readings: 11,000 E.
Total f recorded dft readings failed: 1 22 F.
Evaluation of size of defective areas:
see Attachment A
- G.
Total 3 test areas w/both adhesion & dft failures: ??ot available
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- 11. Steel Liner (Units I and 2 A.
Total size (estimate):
290,000 sq. ft.
yy-B.
Total f adhesion tests-
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C.
Total # adhesion test failures
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6680 I
D.
Total i recorded dft readings:
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Total f recorded dft readings failed:
137 s
F.
Evaluation of size of defective areas:
see Attachment A
- G.
Total f. test areas w/both adhesion & dft failures: f40t available' 111. Miscellaneous Steel : Pipe Supports (Unit 1)
A.
Average size (estimate): 15 sq. ft.
Total # items in backfit scope (estimateh g %)
r B.
r7 g
C.
Total f items tested (in sample):
gjk10' D.
Total # items 'with adhesion f'ailure(s) only: 5 t
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a E.
Total e items with dft failure (s) on1y:
17 F.
Total # items with adhesion and dft failures: 0 lY. Miscellaneous Steel : Cable Tray Supports-(Unit 1)
A.
Average size (estimate):
11 sq. ft.
N B.
Total t items in backfit scope (estimate): 755 Wi./
C.
Total f items tested (in sample):
297 P.2
.D.
Total f items with adhesion f ailure(s) only:
E.
Total i items with df t f ailure(s) only: 34 Fr {,M gy /q F.
Total # items with adhesion and dft failures: 1
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s V.
Miscellaneous Steel : Conduit Supports (Unit 1)
J A.
Average size (estimate): 8 sq.,ft.
B.
total i items in b'acifft sc5pe (estimate): 4812 Y
C.
Total f items tested: 225 5Y" D.
Total i items with adhesion f ailure(s) only-1 E.
Total f items with dft failure (s) only:
10
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F.
Total f items with adhesion and dft failures: 0 VI. Miscellaneous Steel : Other (Unit 1)
A.
Average size (estimate):
Not available. Total estimated area = 46,670 sq. f t.
B.
Total i 4tems in backfit scope (estimate): Not available C.
Total f items tested: 75
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D.
Total # items with adhesion f ailure(s) only:
1 '
E.
total t items with df t f ailure(s) only':.s,65 F.
Total # ' items with adhesion and dft failures: 2 e
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p ATTACHMENT A
- 1.. Concrete F.
The adhesion f ailure was isolated to an area of' 400 square feet.
s The df t f ailures were isolated to total areas of 2201 sq. f t. for low millage and 141 sq. ft. for high millage.
s.c II. Steel Liner F.
The adhesion failures were isolated to a total area of 24 square feet.
The df t f ailures were isolated to total areas of 1316 sq. f t. for low millage and 1139 sq. ft. for high millage.
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