ML18030A107

Interim Deficiency Rept Re Inadequate Spec Requirements for Allowable Shell Recesses for Installation of Hilti Shell Type Expansion Anchors.Final Rept to Be Issued Sept 1980

ML18030A107
Person / Time
Site:	Susquehanna
Issue date:	05/23/1980
From:	Curtis N PENNSYLVANIA POWER & LIGHT CO.
To:
References
PLA-488, NUDOCS 8005300437
Download: ML18030A107 (3)

Text

REGULATOR'i NFORAATION DISTRISUTION S EM (RIDS) N + I ACCESS IOI'I )VAR: 8005300437 DOC DA TE: 80/05/23 NOTARIZED: NO DOCKET 4 Electric Stations Unit li Pennsylva

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FACIL:5 - 87 Susauenanna Steam 05000387 88 usquehanna Steam Electric Stationi Unit 2i Pennsylva 05000388 AU AIJTrlOR AFFILIATION CURT IS, N ~ )u ~ Pennsylvania Power I) Light Co.

RECIP.>vARE REC IPIENT AFFILIATION

SUBJECT:

Interim de.f iciency rept re Hilti shell type expansion anchot allowable shell recess i nadequate spec rec>uirments.Final rept to oe issued Sept 1 980 0 IS TR I RUT IOIV CODE; 80 19S COPIES TITLE: Construction

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TWO NORTH NINTH STREET, ALLENTOWN, PA. 18101 PHONEt (215) 821 5151 NORMAN W, CURTIS Vice President.Engineerrng iL Construction 821-5381 May 23r 1980 Mr. Boyce H. Grier Director, Region I U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 SUSQU-WiR L STEttr< ELEC~~.ZC S ATION INTERIM REPORT OF A DEFICIENCY ON HZLTI SHELL TYPE EXPANSION ANCHORS ERs 100450/100508 FILE 840-4/900-10 PLA-488

Dear Mr. Grier:

This letter serves to confirm information provided by telephone to NRC Inspector Mr. R. Gallo by Mr. A. R. Sabol of PP&L on April 21r 1980. Zn that conversation, Mr. Gallo was advised that the subject condition was under evaluation for reportability under the guidelines of 10CFR50.55(e).

The origin of the problem lies with inadequate specification requirements relating to allowable shell recesses for the installation of shell anchors.

These Hilti HDI shell type expansion anchors have been extensively used on Susquehanna to support electrical items such as conduits, junction boxes and wireway gutters.

On April 16r 1980, the indeterminate condition was recorded on MCAR-1-52 by Bechtel QA who requested an engineering evaluation of its reportability.

Bechtel and PPGL engineering have since concluded that the condition is report-able under the provisions of 10CFR50.55(e) in that the capacities of the in-stalled anchors remain indeterminant. We are in the process of arranging or comprehensive testing of the Hilti shell anchors by a qualified testing con-sultant, the results of which testing will form the basis for additional corrective action.

Since the details of this report provide information relevant to the reporting requirements of 10CFR21, this correspondence is considered to .also discharge any formal responsibility PP&L may have for reporting in compliance thereto.

PENNSYLVANIA POWER 8 LIGHT COMPANY 800ss 0D "/S9-

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Mr. Boyce H. Grier May 23'980 We expect to issue a final report in September, 1980.

Very truly yours, N. W. Curtis Vice President-Engineering a Construction ARS:mcb cc: Mr. Victor Stello (15)

Director-Office of Inspection 6 Enforcement U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. G. McDonald, Director Office of Management Information 6 Program Control U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. Robert M. Gallo U. S. Nuclear Regultory Commission P. O. Box 52 Shickshinny, Pennsylvania 18655