ML20098A126
| ML20098A126 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 08/21/1984 |
| From: | Gucwa L GEORGIA POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML20098A120 | List: |
| References | |
| NED-84-447, NUDOCS 8409240310 | |
| Download: ML20098A126 (3) | |
Text
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- Georgia Power Company
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- 333 Piedrnont Avenue g
9 Attanta. Georga 30308 F
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? Telephone 404 526-6526 '
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Mail.ng Addrew:
Post Office Box 4545
- Atlanta, Georgia 30302 N Aug 28 all : 12 Ge rgi Power L T. Gucwa the southern electrc system Manager Nuclear Engineenng -
andChief Nucles Engineer NED-84-447 August 21, 1984 U. S. Nuclear Regulatory Canission REFERENG:
Office of Inspection and D1forement RII: HCD Region II - Suite 2900 50-366
.101 Marietta Street, W Inspection Report Atlanta, Georgia 30323 84-27 ATIETTION: Mr. James P. O'Reilly GERTUMEN:
The following information is sutaitted in response to Inspection Report 84-27, which concerns the exmination conducted by Mr. B. R. Crowley of your office fra July 10 to July 13, 1984. One apparent violation was identified.
VIOIATION:
"10 CFR 50, Appendix B. Criterion IX, as impleented by Section 9 of the Hatch Nuclear Plant Quality Assurance Manual, requires that measures be established to assure that special processes, including welding and nondestructive testing are accomplished using qualified procedures in accordance with applicable codes.
AWS Code Dl.1, the applicable code for welding and inspection of structural steel welds, requires that weld undercut be' limited to 0.01 inches maximta for certain applications.
Contrary to the above requirments, special processes were not accomplished in ~ accordance with applicable codes in that on June 22, 1984, visual inspection procedure 1918-V-N001, the applicable procedure for visual inspection of AWS welds, allowed 1/32" maximtn undercut for all AWS welds resulting in 133 welds being inspected and accepted to an incorrect acceptance standard. Two of the 133 welds required re-work to bring within requirments.
This is a Severity level V violation (Supp1 ment I)."
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8409240310 840904 PDR ADOCK 05000366 G
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,w-GeorgiaPower d L U. S. Nuclear Regulatory Cam 11ssion Office of Inspection and Enforc sent
' Region II - Suite 2900 August'21, 1984 Page Two
RESPONSE
Adnission or denial of alleged violation: The violation occurred.
Reason for the violation:
In a January, 1984 NRC inspection, Follow-up Its.366/84-03-03 was identified as a result of a discrepancy between the Recirculation Piping Replacement Project (RPRP) specification s'xl the Newport News Industrial (WI) visual inspection procedure. The RPRP specification required that structural welds be accmplished in accordance with AWS Dl.1-1977, which has very stringent undercut requirements (0.010" maximm) for welds where the primary tensile stress is transverse to the weld.
@e NNI procedure allowed 1/32" maximm undercut for all AWS welds.
In response to this item, the mI general welding precedure was revised to reflect the more stringent requirments, but the visual inspection procedure was not revised. RPRP personnel were aware of the need to revise the visual inspection procedure;
- however, the revision was withheld because the Architect-Engineer (AE) had been rq uested to review the undercut requirments for applicability to the work in progress.
The AE review resulted in a relaxation of the weld undercut rquirenents (0.010-l/32",
depending on material thickness) based on a later edition of the AWS code.
After the AE review, RPRP personnel failed to revise the affected procedure in a timely manner.
They had previously failed to document the decision to continue welding with the knowledge that reinspection could be necessary and did not document the plan of action for reinspection.
Corrective steps which have been taken and the results achieved:
The NNI procedure on visual inspection was revised to address the new weld undercut requirments.
As a result of this change,133 welds required reinspection to assure cmpliance with the new acceptance criteria.
Of the 133 welds requiring reinspection, 131 were found acceptable.
The other 2 welds rajuired repairs which were made, reinspected, and accepted.
Corrective steps which will be taken to avoid future violations:
A review of the RPRP Specification, Revision 10, has been performed. %e specification was empared to the applicable NNI procedures to ensure that required information was accurately incorporated into these docments.
No areas of non-cmpliance were found.
This review was empleted on July 23, 1984.
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F GeorgiaPower d U. S. Nuclear Regulatory Comnission Office of Inspection and Enforcenent Region II - Suite 2900 August 21, 1984 Page Three
RESPONSE
(Continued)
Date when full cmpliance - will be achieved:
Full conpliance was achieved on June 29, 1984, when the NNI visual inspection procedure was updated with the correct undercut acceptance
- riteria and the reinspection and repair of affected structural welds was canpleted.
Please contact this office if there are any questions.
Very truly yours, fT g- +
L. T. Gucwa JHAnb xc:
J. T. Beckham, Jr.
H. C. Nix, Jr.
Senior Resident Inspector l
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