ML20003J290
| ML20003J290 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 05/05/1981 |
| From: | Davidson D CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8105110200 | |
| Download: ML20003J290 (2) | |
Text
A TH E C LEV E LA N D E LECT RIC ILLUi/ilN ATIN G C O M P A N Y P.o. Box 5000 m CLEVELAND OHlo 44101 e TELEPHONE g216) 622-9800 o ILLUMINATING SLOG.
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$5 PUBLICSCUARE erving The Best Location in the Nation Dalwyn R. Davidson tiCE PRE $1 CENT
$75TEu ENGINEERING AND CcNSTRUCTioN May 5, 1981 fg 9
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- 1 a Mr'. James G. Keppler "g 0 3 9en' C
N Director, Region III
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Office of Inspection ud Enforcement U. S. Nuclear Regulatory Commission 4,, Wy g /
799 Roosevelt Road
/
Glen Ellyn, Illinois 60137 RE:
Perry Nuclear Power Plant Docket Nos. 50-440; 50-441 Final Report on Anchor and Barrie* Plate Material on Some Safety-Related Penetrations [RDC 27 (81)]
Dear Mr. Keppler:
This letter constitutes the Final Report as required by 10CFR50.55(e) on.the failure to i= pact test or normalize ASME Section III code material in some safety-related penetrations furnished for the Perry Nuclear Power Plant under procurement specification SP-527-4549-00.
This nonconforming condition was reported as a significant deficiency to Mr. L. McGregor of the NRC Region III Office of Inspection and Enforcement on April 8,1981, by Mr. W. J. Kacer of the Cleveland Electric Illuminating Company (CEI).
Descrip tion of Deficiencv Anchor and barrier plates which attached piping penetrations to the Class MC containment vessel boundary were not impact tested or normalized (depending upon chickness) as required by ASME Code Section III, Subsection NE, Paragraph 4431. The piping procurement specification, SP-527-4549-00, Revision IX, prepared by Gilbert Associates, Inc. (GAI), did not require impact testing for safety class 2 and 3 component suppo rt materials except where specified on the design drawings. The piping fabricator was Full =an Power Products, Williamsport, Pennsylvania. The applicable ASME Code for the contract is the 1974 Edition through the Winter of 1975 Addenda.
The design drawings for the penetrations required both the anchor and barrier plates to be supplied in accordance with ASME Section III requirements and to be ultrasonically tested in accordance with Subsection D.
The drawings did not identify the plates as being attached to a Class MC toundary and did not require impact testing for the material, gd/1 h/p 3 8105110 QOO
S Mr. Jusc G. Krpplcr May 5, 1981 Analysis of Safety Implications In the event of a postulated accident, where brittle failure of the penetration plate material may have occurred, the possibility of breaching containment existed, thus resulting in potential off-site exposures exceeding allowable limits.
Corrective Action Taken Pullman Power Products was directed to identify the heat numbers of all anchor and barrier places for each containment vessel penetration which they fabricated.
For the anchor plate caterial (SA-516-70), ten (10) different heats were identi-fled affecting twenty-seven (27) Unit I penetrations and twenty-six (26) Unit II' penetrations. For the barrier plate material (SA-516-70) which is under 5/8 inch thick, only one heat was found to be non-normalized, affecting nine (9) Unit I penetrations and six (6) Unit II penetrations.
Impact tests were run on all eleven (11) heats. Results of the impact testing showed that three (3) of the anchor plate heats failed the test, and the barrier plate heat also failed.
A total of twenty (20) Unit I penetrations and twenty-three (23) Unit II pene-trations are affected and require repair or refabrication. Thirty-nine (39) of these penetrations have been sent back to Pullman Power's shop in Williamsport for repair or refabrication.
The remaining four will be sent to Williamsport in the near future for refabrication.
The procurement specification is being revised by CAI to specifically address the material requirements for the containment vessel penetrations.
Projected comple-tion date for repair work or refabrication of all forty-three (43) penetrations is August of 1981, Sincerely yours, C
f A v7 Dalwy.
R. Davidson Vice President l
System Engineering and Construction ksz l
cc:
Mr. Jack Hughes NRC Resident Inspector, PNPP l
l Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.
20555 l
U. S. Nuclear Regulatory Commission c/o Document Management Branch Washington, D. C.
20555 l
l