ML19332A484
| ML19332A484 | |
| Person / Time | |
|---|---|
| Site: | 07001100 |
| Issue date: | 08/06/1980 |
| From: | Cunningham R NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Lichtenberger H ABB COMBUSTION ENGINEERING NUCLEAR FUEL (FORMERLY |
| References | |
| NUDOCS 8009160136 | |
| Download: ML19332A484 (1) | |
Text
,_-
'1 Cg 7g,, (n l
' UNITED STATES p mac
[
NUCLEAR REGULATORY COMMisslON o
P 's -
g WASHINGTON D. C. 20555 3r
-[
I
%g
/
Docket 70-1100 r
I AUG 6 1980 i
Combustion Engineering, Inc.
ATTN:
Mr. H. V. Lichtenberger Vice President-Nuclear Fuel Nuclear Power System, Manufacturing 1000 Prospect Hill Road Windsor, Connecticut 06095 Gentlemen:
Thank you for your July 10, 1980, letter reporting an incident during HEPA
-filter installation on June 24, 1980, which resulted in a minor release of l
radioactivity into the environment.
The corrective actions you are taking will be reviewed by our Regional Office of Inspection and Enforcement.
Sinc y,
i ard E. Cunningham, Director vision of Fuel Cycle and Material Safety T
8009160
- ! 3 b b
/
UNITED STATES 8
~' i NUCLEAR REGULATORY COMMISSION PDR
)
- I REGION 111 e'f -
i g
799 ROOSEVELT ROAD
'g GLEN ELLYN, ILLINOIS 60137 SEP 031980 Docket No. 50-461
' Illinois Power Company ATTN:
Mr. W. C. Gerstner Executive Vice President 500 South 27th Street Decatur, IL 62525 Gentlemen:
Thank you for your final report dated July 28 and August 15, 1980,
-pursuant to 10 CFR 50.55(e) regarding deficient welds on containment spray piping hangers. We will complete our review of this matter during a future inspection.
Your cooperation with us is appreciated.
Sincerely, MW G. Fiorelli, Chief Reactor Construction and Engineering Support Branch cc: Director, RCI/IE Director, AEOD Chief, OEB/MPA IE Files cc w/1trs dtd 7/28 and 8/15/80:
Central Files PDR Local PDR NSIC TIC Mr. Dean Hansell, Office of Assistant Attorney General Mr. Gary N. Wright, Chief Division of Nuclear Safety h
'1
TLU N U-0163 L14-80(07-28)-9 ILLINO/S POWER COMPANY Gl C....!
S00 SOUTH 27TH STREET. Dr.CATUR. ILUNOIS 62525 July 28, 1980 Mr.- James G. Keppler Director, Region III Offsice of Inspection and Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137
Dear Mr. Keppler:
Clinton Power Station Unit 1 Docket 50-461 Construction Permit CPPR-137 On June 25, 1980, Illinois Power Company verbally notified Mr. H. M.
Wescott of a potential reportable deficiency concerning deficient We have determined welds on containment spray piping (RHR) hangers.
We have that this deficiency is reportable per 10CFR50.55(e)(iii).
This is the final report.
completed an investigation of this matter.
Investigation of Deficient Welds on Hangers Supporting the RHR Spray Piping in Containment Dome 1.
Statement of Reportable Deficiency It was found that some component support welds for the RHR spray piping in the containment dome section did not meet acceptance criteria.
This was discovered during a routine surveillance performed by IP QA.
2.
Investigation The defective welds had been final inspected and accepted by Baldwin Associates (BA) inspectors.
Consequently, a complete reinspection of the entire fifty-nine (59) welds on the RHR hangers was performed by BA.
It was found that twenty-nine (29) welds were unacceptable because of excessive undercut, incorrect weld size, and slag.
It was detemmined that two welding inspectors were involved with the final inspection of these welds.
These inspectors had failed to adhere to the acceptance criteria for visual inspection.
Nonconformance Report 3402 was written to document this matter.
Corrective Action Request 055 was then initiated to ensure proper and complete corrective action.
AUG 4 1980
U-0163 L14-80 (07-28)-9 Mr. James G. Keppler July 28, 1980 Page 2 3.
Corrective Action Upon identification of the two welding inspectors, B'A immediately After further eval-uation of these inspectors'pection program. performance, one inspector wa suspended them from the ins The other inspector was retrained and recertified.
terminated.
A reinspection of all welds previously inspected by the two inspectors was performed by BA.
The results were documented on Nonconformance Report 3468.
The additional defective welds found during this reinspection were repaired.
A periodic inspection verification program has been implemented for the inspector who was retrained to ensure compliance with Training sessions have also been conducted inspection criteria.
to instruct all other BA welding inspectors on the requirements of proper visual weld inspection.
Welding inspection supervisors have been instructed to closely monitor welding inspection activities in the future.
The actions taken, as described herein, are considered to be sufficient to avoid' recurrence of this condition.
The corrective action taken by BA has been verified.
Corrective Action Request 055 has been closed out.
the information provided.in this final report submitted We trust that in accordance with 10CFR50.55(e)(iii) is sufficient for your analysis and evaluation of the deficiency and the corrective action.
Sincerely, och Vice President di Director, Office of I & E, NRC, Washington, D.C.
cc:
H. H. Livermore, NRC Resident Inspector
+
b eM+
g e
=
,=
+
0 U-0167 Ll4-80(08-15)-9 ILLINDIS POWER 00MPANY 500 SOUTH 27TH STREET, DECATUR, ILLINOIS 62525 August 15, 1980 Mr. James G. Keppler Di' rector, Region III Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137
Dear Mr. Keppler:
Clinton Power Station Unit 1 Docket 50-461 Construction Permit CPPR-137 This letter amplifies and modifies Illinois Power Company's letter of July 28, 1980, which reported a deficiency under the provisions of 10CFR50.55 (e), concerning deficient welds on con-tainment spray piping (RHR) hangers.
The statement in paragraph two of the Corrective Action section of the letter, "The c.dditional defective welds found during this reinspection were repaired'.", is in error.
Prepara-tions for this work are still in progress, and repairs have not yet been completed.
This error was made during the process of transcribing the original draft of the report (which said, "will be repaired")
into the final version.
It was a simple, inadvertent mistake.
Since adequate corrective action has been taken and repairs will be made in accordance with approved procedures, no further investigation or action, beyond verification of repairs, will be performed.
We trust that the information provided in this supplemental report is sufficient for your analysis and evaluation.
Sincerely,
/ ~
L J. ;(och Vice President cc:
Director, Office of I&E, NRC, Washington, D.C.
H. H. Livermore, NRC Resident Inspector gjjgj@ Q j$80
~