ML20010H505
| ML20010H505 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 09/02/1981 |
| From: | Foster D GEORGIA POWER CO. |
| To: | Robert Lewis NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML20010H498 | List: |
| References | |
| NUDOCS 8109240549 | |
| Download: ML20010H505 (3) | |
Text
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Georgia Power Company Post office Bom 4545 L
Atianta, Georgia 30302 g
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Teiephone 404 522-60eo Southern Company Services, Inc.
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Post office Bos 2625 Ostmmgham, Alabama 35202 Telephone 205 870-6011 September 2, 1981 United States Nuclear Regulatory Commission
Reference:
Office of Inspection and Enforcement 10:
II: EHG Region II - Suite 3100 50-424/81-08 101 Marietta Street 50-425/81-08 Atlanta, Georgia 30303 Attention: Mr. R. C. Lewis File: X7BG10 Gentlemen:
The Georgia Power Company wishes to submit the following information concerning the violations discussed in your inspection reports 50-424/
81-08 and 50-425/81-08.
We concur with the finding identified concerning undersized welds on safety-related structural steel. Both welds in question were reinspected and found to be undersized by 1/16 of an inch and in excess of the 10%
length as parmitted by AWS D.1.1.
These welds were found to be within the specification requirements of X2AP01 - Section C3.1.F.8.d, Revision 4, which states the following:
" Undercut (underfill) not exceeding 3/32 inch shall be acceptable for the full length of the weld."
The general reasons these welds were accepted are that each weld was a borderline case on acceptance, the configuration of the weld made it i
difficult to weld and inspect, and the acceptance of the weld was made on a visual inspection rather than using a fillet gauge.
The following are particular reasons for acceptance of these welds:
1.
Clip Angle Weld in Room C-13: This weld is located between the top of the beam and the Q-Deck of the floor above which made this l
weld difficult to inspect. The inspector compared the size of the weld (5/16") to the thickn::ss of the angle (3/8") to make visual acceptance of the weld size.
2.
Stiffener Weld in Room C-80: This weld was shown on drawing M08G-S176 as a stitch weld, 2 inches in every 5 inches, but was made as a continuous weld.
The inspector made his acceptance on the fact that more weld metal than required was present so the strength factor was greater than design requirements.
8109240549 810916 PDR ADOCK 05000424 o
Mr. R. C. Lewis 50-424/81-08; 50-425/81-08 September 2, 1981 page two Each weld in question has been repaired in accordance with AWS DI.1 and the design drawings.
Each weld has been reinspected, noted as acceptable, and documented accordingly.
Corrective Action taken to prevent recurrence was to verbally inform each Structural Steel Inspector of the critical nature of insuring that proper weld size is maintained in accordance with AWS D1.1 and Specifica-tion X2AP01, Section C5.1.
The acceptance standards as outlined in these codes and specifications were explained.
Each inspector shall have a fillet gauge when inspecting welds and shall measure all borderline cases t' insure weld size compliance.
In order to fully eva Rate the impact of this violation, a random sample of approximately five percent (5%) of the same type weld connections which have already been accepted shall be reinspected. An evaluation of the results shall detemine the reliability of the previous inspection effort.
Full compliance will be achieved September 23, 1981.
Neither the inspection report nor this reply contains any proprietary-information and may be placed in the NRC's Public Document Room.
Very truly yo rs, o
D. O. Fuster Project General Manager CWH: sew
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Mr. R. C. Lewis 50-424/81-08; 50-425/81-08 September 2, 1981 page three D. O. Foster states that he is Project General Manager of Georgia Power Company's Vogtle Project and is authorized to execute this oath on behalf of Georgia Power Company and that to the best of his knowled e t
and belief the facts set forth in this letter are true.
/
i GPC:
v D. O. Foster Sworn to and subscribed before me this,/d day of September, 1981.
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90elery Pulse, Georsts. 9tste at L vsa My Commission Empires March 21,1585 xc: U. S. Nuclear Regulatory Commission Attn: Victor J. Stello, Jr., Director 6ffice of Inspection and Enforcement Washington, D.C.
20555 J. H. Miller, Jr.
R. J. Kelly R. E. Conway G. F. Head D. E. Dutton R. H. Pinson C. F. Whitmer D. L. McCrary R. A. Thomas J. A. Bailey
- 0. Batum D. O. Foster K. M. Gillespie E. D. Groover L. T. Gucwa B. L. Lex C. R. Miles, Jr.
P. C. Nix R. W. Staffa J. L. Vota