IR 05000266/1986019

Insp Repts 50-266/86-19 & 50-301/86-19 on 860916-18.No Violation or Deviation Noted.Major Areas Inspected: Resolution of IE Bulletin 79-02, Pipe Support Baseplate Design Using Concrete Expansion Anchors

ML20210U035
Person / Time
Site:	Point Beach
Issue date:	09/30/1986
From:	Danielon D, Danielson D, Norton J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
Shared Package
ML20210U018	List: IR 05000266/1986019 ML20210U012
References
50-266-86-19, 50-301-86-19, IEB-79-02, IEB-79-2, NUDOCS 8610090377
Download: ML20210U035 (4)

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U.S. NUCLEAR REGULATORY COMMISSION

REGION III

Reports No. 50-266/86019(DRS); 50-301/86019(DRS)

Docket Nos. 50-266; 50-301 Licenses No. DPR-24; DPR-27 Licensee: Wisconsin Electric Power Company

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231 West Michigan Milwaukee, WI 53203 Facility Name: Point Beach Nuclear Plant, Units 1 and 2 Inspection At: Point Beach Site, Two Creeks, WI Inspection Conducted: September 16-18, 1986 kHL/$-m Inspector: . F. Norton if3 *

Date Approved By: D. H. Danielson, Chief 7)3*/f4 Materials and Processes Date Section Inspection Summary Inspection on September 16-18, 1986, (Report No. 50-266/86019(DRS);

No. 50-301/86019(DRS))

Areas Insaected: Routine unannounced inspection of the resolution of IE Bulletin io. 79-02 " Pipe Support Baseplate Design Using Concrete Expansion Anchors." (25528)

Results: No violations or deviations were identifie '

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l 8610090377 860930 PDR ADOCK 05000266 O PDR

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DETAILS Persons Contacted Wisconsin Electric Power Company (WEPCo)

• J. J. Zach, Manager, Point Beach Nuclear Plant J. E. Knorr, Regulatory Engineer

• F. A. Flentje, Administrative Specialist, EQRS

• W. J. Herman, Superintendent of Maintenance and Construction A. Reimer, Superintendent of Nuclear Plant Engineering U.S. Nuclear Regulatory Commission R. L. Hague, Senior Resident Inspector

• Denotes those attending the exit intervie . License 2 Action on IE Bulletins (Closed) IE Bulletin No. 79-02 (266/79-02-BB; IB; 2B; 3B; 301/79-02-BB; 1B; 28; 38): IE Bulletin No. 79-02 " Pipe Support Baseplate Design /

-Construction Using Concrete Expansion Anchor Bolts." Background IE Bulletin 79-02 addresses the design and construction of pipe support baseplates with concrete expansion anchors. The bulletin was issued March 3, 1979, and supplemental revisions were issued July 21, August 20, and November 8, 1979. The primary purpose of the bulletin was to assure that licensees had appropriately considered baseplate flexibility and its potential effects on anchor load Program Directives The NRC inspector reviewed the following:

Procedure For Verification and Inspection of Cencrete Fasteners in Response to NRC IE Bulletin No. 79-0 Phillips Getchow Procedure for Identification and Initial Inspection of Seismic Category I Pipe Supports (QAP-PB-4).

Pull Test Procedure for Verification and Inspection of Concrete Fasteners in Responsc to NRC IE Bulletin No. 79-0 * Procedure for Verification and Inspection of Concrete Expansion Anchors in Response to NRC IE Bulletin No. 79-02 (Ultrasonic Testing).

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A c. Testing (1) Initial L Initial testing revealed a significant number of supports

. . -(22 of 129) with deficiencies which in effect reduced safety'

factors to values below Bulletin requirements. The Bulletin

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specifies minimum values of'four for wedge type anchors and five for shell type. anchors. Anchor installations. included

both types. In no case was the calculated safety factor

[ below two in the initial samplin !

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(2) Laboratory

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The licensee retained Soil Testing Services of Wisconsin, Incorporated to develop empirical data on. torque / tension for both wedge type and shell type installations. . Data was

developed on anchor bold diameters of one-half inch through one inch sizes'in one-eighth inch increment bolt diameter steps. This data was used later to relate torque / tension values in production testing.

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(3) Production Testing The licensee inspected all Seismic Category I pipe supports to verify design / construction integrity of these systems. Also, all Seismic Category I pipe which was supported on concrete masonry structures was modified to remove all supports from

, masonry to monolithic concret d. Test Results The final summary of the baseplate and anchor bolt evaluations is as i

follows:

- Total number of supports evaluated 943 Number of supports with FS < 2 123

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Number of supports with FS > 2 but < 4 74

or 5 Number of supports with FS > 4 or 5 as 746 required-e. Conclusion Baseplate repairs and/or modifications were accomplished on all

, deficient installations to bring them up to IE Bulletin No. 79-02

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requirements. The repairs / modifications were accomplished in accordance with licensee engineering and QA/QC requirements. The NRC inspector reviewed a sample of the QC documentation. Also, several of the modifications / repairs were inspected in the company of the Superintendent of Maintenance and Construction. All program

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directives, and engineering and QC documentation were found to appropriately address the Bulletin issues. No discrepancies between i- design drawings and construction were discerned,

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Based on the aforementioned data, it is concluded that IE Bulletin No. 79-02 has bee-fully implemented at the Point Beach Nuclear Plant. .No

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violations or deviations were identifie . Exit Meeting The inspector met with licensee representatives (denoted under Persons-Contacted) on Septembeer 18, 1986. The inspector summarized the purpose and findings of the inspection. The licensee acknowledged the findings as reported herein. The inspector also discussed he likely informational content of the inspector's report with regard to documents or processes reviewed by the inspector during the inspection. The licensee did not identify any such documents / processes as proprietar .

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