ML20212P248
| ML20212P248 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 08/18/1986 |
| From: | Foster D GEORGIA POWER CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| GN-1039, NUDOCS 8609030048 | |
| Download: ML20212P248 (2) | |
Text
of ce x 8 Wayrestero. Georgia 30830 Telephone 404 554 9981. Ext. 3360 404 724-8114, Ext. 3360 69 h
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GeorgiaPower o.o.rosie, ge Pres t
pe snfun mc wem August 18, 1986 United States Nuclear Regulatory Commission Region II File:
X7BG10 Suite 2900 Log:
GN-1039 101 Marietta Street, Northwest Atlanta, Georgia 30323
Reference:
50-424/86-11, 50-425/86-06 Attention: Mr. J. Nelson Grace As requested in your letter dated July 9,1986, Georgia Power Company wishes to provide the following supplementary information to our response (GN-920 dated May 23,1986) to Violation 50-424/86-11-02, 50-425/86-06-02,
" Failure to Promptly Identify Undersize Welds." The supplementary infor-mation is numbered in correspondence with your questions.
(1) As indicated in our response GN-920, Georgia Power Company completed a reinspection of Richmond Engineering Company (REC 0) encapsulation vessels in February 1986.
Undersize welds were identified and documented on Deviation Reports (MD-8721, MD-8723, MD-8725).
REC 0 has been requested to evaluate the undersize welds and determine what corrective actions are necessary to ensure the integrity of the encapsulation vessels.
The Deviation Reports will be disposi-tioned in accordance with the results of REC 0's evaluation.
(2) As a general practice, Georgia Power Company requires additional J
weld size inspections following weld repairs if sufficient material 4
is removed to cause the size of the remaining weld to be question-able.
In the case of the subject encapsulation vessel welds, the repair methods (light filing and brushing) used to correct previously discovered undercut, slag, and arc strikes resulted in minimal surface weld material removal.
The amount of weld material removed was not considered sufficient to warrant additional weld size inspec-tions.
(3) Our response GN-920 does not state that the only previous defi-ciencies identified at the site on the vessel welds were identified in receipt inspection; however, in retrospect, we agree that this may have been inadvertently implied.
Weld defects on REC 0 vessels were identified during receipt inspections but were also identified at other times.
8609030048 860018 PDR ADOCK 05000424
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m Page Two In Summer 1982, the Vogtle Project became aware of welding defi-ciencies in RECO tanks at another nuclear project. A special inspec-tion was conducted of REC 0 vessels and tanks at Vogtle.
A number of weld discrepancies were identified but were limited to relatively minor surface defects.
Records generated relative to the special inspection indicate that size measurements were taken of some welds but weld size was not a primary consideration of the inspection.
Through review of these records, it was also determined that Deviation Report MD-2264 was actually generated as a result of the special inspection and not as a result of receipt. inspection as stated in our response GN-920.
The special inspection team consisted of some temporarily reassigned receipt inspection personnel.
The initiator of MD-2264 was one of those reassigned receipt inspectors.
As a result, it was erroneously concluded that MD-2264 resulted from this inspector's normal work duties.
We hope that this supplementary information adequately addresses your questions.
None of the information is considered proprietary and this correspondence may be placed in the USNRC Public Document Room.
Yours truly,/
F
.'.0.
Fostd>r REF/D0F/tdm xc:
U. S. Nuclear Regulatory Commission Document Control Desk Washington, D. C.
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