ML20046A764

Forwards Page 5 to Insp Repts 50-317/93-08 & 50-318/93-08 Re Ultrasonic Exam of Safety Injection Sys Weld 6-ISI-2202-10 at Unit 2.Issue Now Considered Unresolved Item Pending Util Action

ML20046A764
Person / Time
Site:	Calvert Cliffs
Issue date:	07/20/1993
From:	Durr J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:	Denton R BALTIMORE GAS & ELECTRIC CO.
Shared Package
ML20046A765	List: IR 05000317/1993008 ML20046A764
References
NUDOCS 9307300023
Download: ML20046A764 (11)

See also: IR 05000317/1993008

Text

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, JUL 2 01993 ' Docket Nos. 50-317 50-318 Mr. Robert E. Denton , Vice President - Nuclear Energy i Baltimore Gas and Electric Company Calvert Cliffs Nuclear Powe.r Plant [ 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 - 4702 [ Dear Mr. Denton: ! i SUBJECT: SUPPLEMENT TO INSPECTION REPORT NOS. 50-317/93-08 AND 50-318/93-08 <

The subject inspection report on page 5 discusses the ultrasonic examination of safety

injection system weld No. 6-IS1-2202-10 for which your ISI contractor's 12 vel III data

reviewer claimed 100% coverage. After further management review of this matter, we are

changing its status and now consider it to be an unresolved item (50-318/08-02) pending

Baltimore Gas and Electric Company action. We will examine the resolution of the item during a subsequent NRC inspection at Calvert Cliffs. t I Your cooperation is appreciated. ' Sincerely, . P Jacque P. Durr, Chief Engineering Branch Division of Reactor Safety

Enclosures: 1. NRC RAYTRACE Generated Plots of Weld 6-ISI-2202-10 Ultrasonic Examination Coverage - 2. Inspection Report Nos. 50-317/93-08 and 50-318/93-08 - Page 5 OFFICIAL RECORD COPY A:CC9308.SUP i

9307360'OE3 930720 E 'k ^^

PDR ADOCK 05000317 ti G PDR y I; . . . . -

._ _ 4- JUL 2 01993 l

. . . ' Mr. Robert E. Denton 2 i cc w/encls: G. Detter, Director, Nuclear Regulatory Matters (CCNPP) !' R. McIzan, Administrator, Nuclear Evaluations J. Walter, Engineering Division, Public Service Commission of Maryland K. Burger, Esquire, Maryland People's Counsel , R. Ochs, Maryland Safe Energy CoaliC .n j

K. Abraham, PAO (2) ' Public Document Room (PDR) Local Public Document Room (LPDR) l Nuclear Safety Information Center (NSIC) NRC Resident Inspector State of Maryland (2) , , ! ! ! .i e 1

W: . JUL 8 01993 , } . I ' . > Mr. Robert E. Denton 3

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i l bec w/ encl: Region I Docket Room (with concurrences) , V. McCree, OEDO ' R. Capra, NRR D. Mcdonald, NRR

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McBrearty $k'15 ffh'yt, 7/'t/93 7//4/93 7/7/93 ! OFFICIAL RECORD COPY A:CC9308.SUP ! , I i .

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. . ! , , , . . 3-23-1993 9:06 SEARCH UNIT FILE: CALVERT.DAT SURFACE FILE: CALVERT.DAT RAYSET 1 SEARCH UNIT NO. 1 Y POSITION (INCH) 0.85 SCANNING SURFACE UPPER LOORING D STOP AT WELD FOLLOW WELD BEAM SPREAD (dB) 6 SMOOTHING INTEGr.a a MAIN BEAM Y LEADING EDGE TRAILING EDGE ACCOMPANYING BEAM ACCOM. LEIsD BEAM ACCOM. TRAIL BElsM SHEAR RIsYS Y LONGITUDINAL RAYS MODE CONVERSIONS THRESHOLD (dB) OFF TOF STIs (microsec) OFF TOF END (microsec) OFF BEld4 BEAM WEDGE SYSTEM SEARCH FREQ. SHAPE SIZE IsNGLE MODE DELAY DELAY UNIT (MHz) (in.) (deg) (usec) (usec) i 1.50 ROUND 0.36 43.0 SHEAR 6.00 0.00 i }}