ML20133P286
| ML20133P286 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 10/22/1985 |
| From: | Edelman M CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| REF-PT21-85, REF-PT21-85-463-000 (RDC-135(85)), PT21-85-463, PT21-85-463-000, PY-CEI-DIE-0129, PY-CEI-DIE-129, NUDOCS 8510310269 | |
| Download: ML20133P286 (3) | |
Text
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]p#i THE CLEVELAND ELECTRIC ILLUMIN ATING C0MP ANY P O BOX 5000 - CLEVELAND. CHtO 44101 TELEPHONE (216) 622-9800 tLLUMINATING DLDG
- $5 PUBLIC SOUA AE Serving The Best Location in the Nation
!RjFRAY R. EDELMAN VICE PRESIDENT NUC LE A R October 22 1935 PY-CEI/OIE 0129 L Mr. James G.
Keppler Regional Administrator, Region III Office of Inspection and Enforcement U.S.
Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 RE:
Perry Nuclear Power Plant Docket Nos.
50-440; 50-441 Model BE-419 Pipe Clamps
[RDC 135(85)]
Dear Mr. Keppler:
This letter is the final report pursuant to 10CFR50.55(e) concerning BE-419 pipe clamps manufactured by Basic Engineers of Pittsburgh, Pennsylvania, a Division of National Valve and Manufacturing Company (NAVCO).
On April 30, 1985, Mr. E. Riley of The Cleveland Electric Illuminating Company (CEI) telephoned Mr. R.
Knop to report this deficiency which is being evaluated per Deviation Analysis Report 238, and an interin report sas submitted on May 30, 1985.
Subsequent to our notification of this problem to the Commission, a IUCFR21 Report was filed by Pacific Scientific on June 18, 1985.
Dansription_of_Deflsiensy During the process of final hanger inspection, it was identi-fied that there were instances where BE-419 pipe clamps would rotate about the axis of the pipe when subjected to a trans-verse compressive type load less than the allowable design load.
This rotation occurs when the clamps are installed properly and the fastener bolts are torqued per the Vendor's specification requirements.
Detailed review / evaluation by Basic Engineering and Project Organization has determined that this deficiency is applicable to two (2) models within the BE-419 clamp series utilized at the Perry Nuclear Power Plant (PNPP).
The clamp models and respective size cate-gories are BE-419 N-1 (3/4" and 1") and BE-419 N-2 (l").
8510310269 851022 1
PDR ADOCK 05000440
/D S
PDR OCT 2 51985 J/
g 6
I i
Mr. James G. Koppler October 22, 1985 PY-CEI/OIE 0129 L l
Analysis of Safety Imolications Under certain loading conditions, the functional integrity of l
the systems utilizing these supports cannot be assured with-1 i
out the components performing as designed.
1 l
Corrective Action i
Upon initial discovery of the deficiency, Basic Engineering i
(BE) was contacted to provide background design information i
and to execute a testing program to determine the extent of 5
the problem.
The testing program identified that certain BE i
clamps would fail when transversely loaded.
BE then provided j
a written report attesting to the subject failures.
l Project Organization has taken the following steps to resolve
.l this concern:
1)
The Basic Engineering report was evaluated to deter-i mine which of the identified clamps were used at PNPP.
i Results of the review indicated that only two models and sizes of clamps impacted the as-installed I
component supports.
The clamps in qucction are the
}
BE-419 N-1, 3/4" and 1" sizes and the BE-419 N-2, 1" l
size.
Subsequently, Nonconformance Reports were i
generated to identify all deficient clamps.
No
,l j
deficient clamps have been installed in Unit 2.
i 2)
The clamp manufacturer, Basic Engineering, and the clamp supplier, Pacific Scientific, were requested to revise the pertinent Load Capacity Data Sheets (LCD's) and the installation manual, respectively.
This i
action has been completed, i
l 3)
All contractors responsible for installation of the i
subject clamps were directed to revise appropriate l
procedures, providing guidelines for future j
installations.
l 4)
The Nonconformance Reports which identify the in-stalled supports have been dispositioned rework.
Rework instructions provided for increased clamp bolt l
torque values, substitute bolting material, and I
specific inspection instructions.
Necessary actions i
to chango-out all of the installed bolts have been completed.
Clamps presently located in the CEI l
warehouse have also been identified on Nonconformance Reports and placed on hold.
These clamps will remain on hold pending substitution of new bolting material j
and contractor procedure revision detailing new installation instructions.
i
... _ _ _..., ~..-_.-__
Mr. James G. Keppler October 22, 1985 PY-CEI/OIE 0129 L Based on the actions already taken and the present controls im-posed on warehouse stock material, CEI considers this item resolved relative to Unit 1.
This deficiency is not applicable to Unit 2 If you have any questions, please call.
Sincerely, uitj [ h t la t%
Murray R.
Edelman l
Vice President Nuclear Group i
MRE:sab cc:
J. A. Grobe USNRC, Site Office SBB50 l
Director Office of Inspection and Enforcement i
]
U.S. Nuclear Regulatory Commission Washington, D.C.
20555 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C.
20555 Records Center, SEE-IN Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 33039 I
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