ML19253A215

Deficiency Rept on 790618 Re Missing Lower Jam Nuts & Bearing Lock Washers from Four Support Tube Assemblies of Pressurizer.Replacement Jam Nuts & Bearing Lock Washers Will Be Installed Prior to Criticality

ML19253A215
Person / Time
Site:	North Anna
Issue date:	06/22/1979
From:	Brown S VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
NUDOCS 7908200118
Download: ML19253A215 (3)

Text

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DATA SHEET 10 CFR PART 21 REPORT IDENTIFICATION AND RECORDING OF IE ACTIONS PART 21 !DENTIFICATION NO. /,] ,g g g AITS N AME(L) OF LICENSEE (S). VENDOR (S)

PERSON ($) OR OTHER ORGANIZATION (S) U 11 aus REPORTING hs C. ) M%W GENERAL " SUBJECT n! . OfrQAREPORT

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LM 7 s t-vu DATE OF INIT!AL NOTIFICATION DATE(S) OF PART 21 REPORT (S) (5 DAY & SUPPLEMENT)

(48 HOUR REPORT) b//8/ 7 9 h/ h /#7(// / / /

FACILITY (IES) INVOLVED: .[C . 9 3 CJ RESPONS!SLE IE ORG ANIZATION(S)

LEAD = 1 SUFPORTIVE = 2 F F& M51 51 RC1 ROI IE ACTIONS - CHECK OR PROVIDE DATA AS APPROPRIATE LIST OTHER NRC OFFICES INFORMED DISCUSSED WITH IN!T* ATOR? REPORT IS REQUIRED DATE: UNDER PART 21?

REQUE.ST M ADE FOR ADDITION AL INFO? INQUIRY?

DATE RECElVED:

PRESE RELEASE (S) INS PECTION ?

REVIEWED FOR POTENTIAL A/ O ( MC 1110) IN VESTIG ATIO N ?

DATE:

TR ANSFERED TO OTHER NRC OFFICE? ENFORCEMENT?

BULLETIN ISSUFD? N O. CO ! RECT I"E ACTION TAKEN?

DATE OF CLOSEOUT: CIR C. 'LA .t !SSUED?

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CLOSEOUT METHOD:

IE REPORT NUMBERS:

DATE OF F N AL REVIEW & DISTRIBUTION:

(XOO S) .

ADDITION AL COMMENTS:

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['? June 22. 1979 3 ,. i j '$ Ed * \ b M.' . J ames P. O ' R e i l l y, Director Serial No. 503 1 0'fice of Inspecticn & Enforcement PSE&C/MBS:mac: wang U. 5. Nuclear Regulatory Contr.ission '

R!giun II Doc.ket No. 50-339 l']i Meletto Street, Saite 3100 Adanta, Geo gla 30303 D aa. Mr. C,'Re illy:

On June 18, 1979, a report was made under the provisions of 10CFR50.55(e) cancerning mi:: sing lower ja.9 nuts and bearing lock washers from all four s 4pcet tube assemblies of the pressurizer.

In accordance with the reporting requirements of 10CFR21, the following iifermation is submitted:

A. Nvne and address of eporting individual:

Mr. E. A. Baum, Executive Manager rg Licensing and Qaality Assurance J Virginia F.lectric ar.d Power Company P. O. Box 2SSS6 Richmnd, Virginia 23251

8. FaCiIity, actiV i t V, 2nd/Or Componert affecte0:

North Anna o ower Station, Unit 2 Prenurizer Support Assembly C. w>e nf firm constructing the facility or supplying the component, a'.tivity or service: '

Stone & k'ebster Engineeririg Corporation P. O, Box 2325 Boston, Massachusett 02107 ,

D. Description of defect, deficiency, or failure to comply:

The lower jam nuts and bearing lock washers were determined to be missing from all four support tube assemblies of the pressurizer.

The lower ja.n nuts and bearing lock washers prevent movewnt (unthreading) of the spherical nuts. The lower spherical nuts are threaded on the support tune assemblies and support the pressurizer ring girde . Loosening of the lower spherical nuts may result in g Icuering of the pressurizer and C&Jse possible damage.

L. Date of determir.nion of reportability:

lune 18, I!79 7, n 801 n1 71w.

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. <en4 eu. ra.c as. -o<.t cousas< To Mr. James P. O'Rei!Jy', Director 5~ " n ?

F. Senilar t.omponents, activites, or services:

I North Anna Power Station, Unit 1 G.

Currect ive action which has been, is being or will be taken, the individual responsible and the length of time to complete the action:

Correction itction has been Initiated, Replacement jam nuts arid bearing lock washers are being purchased and will be installed prior to initial criticality.

H. Other information:

Since no other actions will be required to correct the problem 3

y described in section D of this report, we consider this to be the P

final report .indar the provisions of 10CFR50.55(e)(3).

1 P:cc!d yaa require fu.-ther informat.icn, please contact this office.

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i Sain/ C. Prown, Jr.

Senior Vice f President - Power Spa,t i in Engineering and Cons.tructinh c f rector, Office of Inspection awi Enforcement (3)

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.. e ATTACED IS A PART 21 REPORT FRGi IE f%Il (?!IT - R034 359E/W PART 21 IDBRIFICATION f0, 7f-A3 7-o o o CGTANY fME_ O c ,v e DATE OF ETTER 8/21/79 D00(ET t0, .G-53 9 DATEDISTRIBUTED '7/ va / 7 9 ORIGINALREPORT 4 SUPPLB'DRARY DISTRIPUTION: -

FACTOR (R) v' FUEL CYCE & ] SAFEGIARD3(S) f%TERIALSW NRR/IDR, DIRECTOR AD/FFtBI- AD/SG-IE NRR/DRi DIRECTOR NE/F0iS AD/ROI AD/ROI ( 2 ) REGIONS REGIONS AD/RCI IE FIES NRR/ DOR,DIPECTOR PEGIGS PDR K1SS/SG SS-881 IE FIES (2) LPDR PDR CBfiW.L FILES CBEPAL FILES-SS-396 LPDR CBERAL FIES (CHRON) ' EPA CBy6 01 FIES(CHR000 PDR IE FIES (2)

LPDR CBERAL FIES 016 g B03 DSINIG, MPA CBERAL FIES (CHR0:0 B03DBNIG,MPA CBRPAL FIES - SS-30:

ACTION: B03D31NIG,MPA PRELIMINARY EWALATI0d 0F THE ATTACHED REPORT INDICATES LEAD RESPONSIBILITY F FOLLGt-UP AS SHOWN BELOW:

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