ML20100R233

From kanterella
Jump to navigation Jump to search
Forwards Results of Low Pressure Turbine Insp Taken During Third Refueling Outage,Per 830620 Request.Results Did Not Indicate Any Significant Degradation
ML20100R233
Person / Time
Site: North Anna Dominion icon.png
Issue date: 12/10/1984
From: Stewart W
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To: Harold Denton, John Miller
Office of Nuclear Reactor Regulation
References
693, NUDOCS 8412170353
Download: ML20100R233 (3)


Text

- _.

7 ; 7_

1 g; l

. VIRGINIA ELECTRIC AND power COMPANY RIcnwoxn,VIROINIA 20261 W.L.SrawAar y,,!'*,","o",",'""o,,,

December 10, 1984

~

Mr. Harold R. D'enton, Director Serial No.

693

Office of Nuclear Reactor Regulation N0/JHL/1ms Attn: Mr. James R. Miller, Chief Docket No.

50-339 Operating Reactors Branch No. 3 License No.

NPF-7 Division of Licensing U.-S. Nuclear Regulatory Commission Washington, D. C. 20555 Gentlemen:

VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNIT NO. 2 LOW PRESSURE TURBINE INSPECTION RESULTS Your letter of June 20, 1983, requested' the results of the North Anna Unit No. - 2 low pressure. turbine inspection that took place during the third refueling outage.

Enclosed for your information are the results of the volumetric inspection. The results show that there were two indications. One indi-cation was on the number 1 low pressure' turbine on disc number 2 at bore hub areas 14-27.

The other indication was on the number 2 low pressure turbine on disc number 5'at bore hub area 371/2. These indications do not-

. present any. significant degradation because they have no radial depth.

In addition, a. visual inspection was performed. This inspection did not indicate any signfficant degradation. The visual inspection test results are available for review at North Anna Power Station.

Very truly yours, T

y W. L. Stewart Enclosure Mr. James P. O'Reilly

-cc:

Regional Administrator Region II Mr. M. W. Branch NRC Resident Inspector North Anna Power Station 9

I 8412170353 841210 PDR ADOCK 05000339-l \\

G PDR

ULTRASONIC INSPECTION OF LP TURBINE DISCS c,( O

(

-(KEYWAYS AND BORE HUB AREAS) oA E FORM NO. POSO 1041 i

. DISTRIBUTION:

u* Conrod Brtorm!

o e.7ive as6umamCkMGmp RichLOCattossamond -

    • Gs0
  • OFFIC 0+ric ePGs0 DislasCT IsGas

'OFFsCE LOC ATIOMs

isTO 700 PROJECTS. MGat eOFFtCE LOC Af TOM - Mask CODEI 6PCb CUSTOMER oURATiONOFINSPECTION ~ EDA'Et

'THRU eDafs OM AMNA Q

STATION unit

__ L P. NO -

..,>,/-

.~.m.

im3

.,I b

B SHAFT TEST NO f

LOCATION Mb PROCESS SPE 9

SHOP ORoER REV F

nO TEAM LEAoER(S)

TEAM MEMBER (S)

U 0-N O CMD bF O-i f~O ses uSiPw SERiAt NO 5Iie 7 5591 OSCituSCOPE SERiAt NO. 8 o ali97-5 59 4 803y 555 se n

RESULTS OF INSPECTION Disc., w

  • cisc. r.-s -*

GOVERNOR END GENERATOR END i-I OK No (,0 ore AT7ou5 TN-1 Ao i 5 r-oR-No roNcAnaus TM-l;;tyS( '

olSC #1 o ok-NO lOcxWOOO5 4R~lD93 0- Ok-NO IMOlc A7.r 05

. 4-)3 ') A 91.

t-O K. Vo /Atos u Tie w TN-l& 486 r-oe -on itom e nuw g lTM -lat/7 i

oiSc oz l

o.12'b. W IV-22 49YinRS O-OL'- kno mol(nmus

' UY$J 095

~

r-cF-M0 W Olu w s TN -10993 T'_ N - % Ie rcensas Tkl-)D99N i oiSc ss o-orz-Are tso ceucro 4 13 109& 0 O k - ru o r o oic am.-A

'4T$ lO9 oiSc,4 r-014-No (Nor c Mmosus TN-Ia tl B t-CE-h/O IND)(ATiero 5 ITN-lao O-ov-No I M O 8C ATro u S 4N b \\ BB(o O-OR-No (NO) CAT 7ess 44 ~/3 D-)

I'-Ost -No (NOsCNT7ws TN-laciB6 I-o4-No tND#c4T1osv5 TN-lQ96 otSc ss o eu 00 inancencus

%8\\bs o-cu-No enorn we.

443%D3c

/

/

oiSc es /

/

/

/

/

/

REMARKS: M /84UMN KIN M

lbN

//d j$D/

^

isiGnarum OF Ouaut, assuma=Cs saGi=rsmi ioats.

9 SEE .E DIVISION FCV.E A SEf ERAT 60N

a.

ULTRASOttiO !NSPECTION OF LP TURBINE DISCS

-f,/

(KEYWAYS A: O BORE HUB AREAS)

DATE FORM NO. POSO 1:42 -

r DISTRIBUTION-4d.f'.nrod 8 m o m o[f u

agSO Ogg * = a. 3.a ANC E. teG R B sOKICE LOC AT:CNe,

L 90 +(icK Nic.bmood u

ePGSO DiSte C nesse ICFFICE LOC ATIONs (STS 700 PRC,4 CTS. esGne sOFFICE LOC ATaCN. asAlb CODEI

%ko cuSTOuER DURATIONOFINSPECTION THRU STATION b

UNIT LP. NO

~"

LOCATION bIOJ Il.

SHAFT TEST'NO l U

BP SCl? 04 *0WN8 ISTATES SHOPORDER b~

24357h.REv 8 PROCESS SPEC TEAM LEADER (S)

@b TEAM MEMBER (S)

M.

N $.

WO 1

s

,A...

MMUS!P 11 SERIAL NO b

~ bb OSCILLISCOPE SERIAL NO.

5 - 3 3 BU'n-554t 8084555 RESULTS OF INSPECTION bisc O!5C GOVERNOR END GENERATOR END

.g.g

,q g4 r

oiSC,, r-ce m me,cwous TN-19,485 r-cu-no moicpmms TN-la4 6 4737093 o-eu-so m n,emos

'l737A9S o ov Nn me.croms oiSC.2 r-ce-No recmu TN-Ia490 T oe -No Nnic Amom TM l;%89 c-m irece u 47870%

e 'o)4-No INN c At OMS N737 ON o

oiSC,3 rmK-No won Amu TN-- l'0995 I-oe-no ionouou TN-lacN6 o oa-ws m m m u 4 73'709Q o-e-No mn,c,vnom 473709/

oiSC,4 r-or-nO recenn,as TN-ISlB6 r-eg-no inacmm 1N-la4 7c O-tW-NO IMos c Amran MOlOOb O-6K-NO IN D) lam e M N ~7 0 7 E DISC #5 ='Oh A*o INAICA TioMs m-e990 r oK-No f N 01C4r16NT W -19 %

- 0 is;pc-g.n e ;eo.o. ] WDID6~/ o-6K-No INoicAmDys 49730-[

DISC #6

/

!/

/

/

/

/

REMARKS-QD;(,jffffA l~1~ f k, *b ~l h $50 ff 'Dj e",fl Q ~ l APPROVED BY; S 3%Mses OF QU AbsTV ASSWR ANCE ENGINE E Re IDATED G SERVICE DIVISION POWER GENERATION r}}