ML20155A808

Summary of 880915 Meeting W/Util in Rockville,Md Re Microbiological Influenced Corrosion Program at Plant.List of Attendees & Viewgraphs Encl

ML20155A808
Person / Time
Site:	Sequoyah
Issue date:	09/29/1988
From:	Donohew J NRC OFFICE OF SPECIAL PROJECTS
To:	NRC OFFICE OF SPECIAL PROJECTS
References
NUDOCS 8810060081
Download: ML20155A808 (22)

Text

-

7 -

y,b* W.%'o,,

. , UNITED STATES 8'

• n NUCLEAR REGULATORY COMMISSION h WASHINGTON, D. C. 20555 k, v...../ September 29, 1988 Docket Nos. 50-327/328 LICENSEE: Tennessee Valley Authority FACILITIES: Sequoyah Nuclear Plants, Units 1 and 2

SUBJECT:

MINUTES OF THE SEPTEMBER 15, 1988 MEETING WITH THE TENNESSEE VALLEY AUTHORITY (TVA) ON ITS MICROBIOLOGICAL INFLUENCED CORPOS10N PROGRAM AT SEQUOYAH On Thursday, September 15, 1980, a meeting was held at the Office of Special Projects (0SP), NRC headquarters in Rockville, Maryland with the Tennessee Valley Authority (TVA). The treeting was held at the request of TVA to discuss its Microbiological Influenced Corrosion (MIC) Program for Sequoyah.

Enclosure 1 is the list of individuals attending the meeting. The following is a summary of the significant items discussed and the actions, if any, taken or proposed.

Sequoyah has experienced tilC in the butt welds of stainless (austenitic) steel piping in the essential raw cooling water (ERCW) system. The MIC attack was initiated at the inside surface of the welds and degradation occured in the form of voids that became larger, and deeper, and eventually developed into a throughwall leak. The leakage has been small and characterized as drips or noist ereas around the butt welds.

TVA developed a MIC program for Sequoyah based upon the data developed through inspection. The MIC program and the engineering evaluation which formed the basis for the program is described in TVA's letter dated January 20, 1987 This program was approved in the staff's Safety Evaluation Report (SER) forwarded by letter dated March 31, 1988.

Ry two letters, both dated April 4,10P8, and in a clarification letter dated May 4,1988, TVA submitted a request for relief frcm the requirements of IWA-5250(a)(2) during the performance of their MIC proaram. These requirecents were detemined to be impractical to perfom on Sequovah Units 1 and 2 during power operation of the plants. The staff granted the relief to IWA-5250(a)(2) and issued its SER in its letter dated May 11, 1988.

This meeting was requested by TVA to present the current status of its MIC progran at Sequoyah, The acenda for the meetinn is the first page of TVA's handout in the meeting (Enclosure 2). TVA stated that the purpose of the meeting was to present the following: 1) the curr';nt status of TVA's M!C progran at Sequoyah and the irplerertation of the additional itens requested in the staff's SER 2) TVA's evaluation process if the leakage criteria is exceeded,and3lTVA'scontingercyplanforinstallingastructuralsleevein pipira affected by M!C. TVA recuested that the staff, based on the reeting, concur in its implementatier of the additional items in the SE, its evaluatien

$ k Nb$;7 m y_

process if the MIC leakage criteria is exceeded and its contingency plan for installino a structural sleeve. The staff stated that it could not concur on the above based only nn the meeting. The staff stated that TVA l should submit the details of the MIC program at Sequoyah for the staff's review and approval.

TVA continued its presentation with a discussion of the background of the MIC program and the additional items listed in the HRC SER dated May 11, 1988.

These additional items were monthly visual inspection of identified leakers, an assessment of these leakers, verification that the leakage does not exceed the criteria of 0.5 gpm per weld and 2.0 gpn total, and acknowledgerent that the use of other than ASME Code repairs, such as the installation of a structural sleeve, requires prior approval by the staff.

TVA then presented the interim repair procedures, including the installation of a structural sleeve, at Sequoyah for MIC damaged welds in ERCW piping and the status of the biocide injection program at Sequoyah.

TVA concluded the meeting stating that it would submit the details of its request for staff approval of the MIC program at Sequoyah in a letter by October 31, 1988. It stated that it vinuld request the staff's approval on the MIC program at Sequoyah and the contingency plans to use structural sleeve for severely PIC damaged EpCW piping, b

Jack N. Donohew, Jr., ProNet Manager i TVA Projects Division l l Office of Special Projects

Enclosures:

1. Attendance List

2. TVA's Meeting Handout cc w/ enclosures:

See next page l

W_.

DISTRIBUTION FOR MEETING SIFMARY DATED: September 29, 1988 Facility: Sequoyah Nuclear Plant, Units 1 and 2*

Distribution a' liscliet File' L NRC PDR Local PDR Projects Reading OSP Reading J. Partlow S. Richardson S. Black B. D. Liaw F. McCoy ,

J. Donohew M. Simms J. Rutberg K. Jenison D. Smith ACRS (10) '

GPA/PA GPA/CA iM. Callahan) (5)

F. Miraglia E. Jordan  ;

B. Grimes i

P. Gwynn J. Scarboreugh  !

G. Marcus l

T. Elsasser C. Ader

• cc: Licensea/Apolicant & Service List ,

l i

1 l

DISTRIBlJTION FOR HEETING SIWFARY DATED: September 29, 1988 Facility: Sequoyah Nuclear Plant, Units 1 and 2*

Distribution

• 7 Docket File NRC PDR Local POR Projects Reading OSP Reading J. Partlow S. Richardson S. Black B. D. Liaw F. McCoy -

J. Donohew M. Sims J. Rutberg ,

K. Jenison l

0. Smith ACRS (10)

GPA/PA GPA/CA (M. Callahan) (5) )

F. Miraglia l E. Jordan  !

B. Grimes 1

P. Gwynn J. Scarborough i

G. Marcus T. Elsasser C. Ader

! l

• cc: Licensee / Applicant & Service List 1 1

l l

l l

l l

t Sequoyah Nuclear Plant cc: Regional Administrator, Region II General Counsel U.S. Nuclear Regulatory Comissien Tennessee Valley Authority 400 West Sumit Hill Drive 101 Marietta Street, N.W.

E11 B33 Atlanta, Georgia 30323 .

Knoxville, Tennessee 37902 Resident Inspec*or/Sequoyah NP Mr. R. L. Gridley c/o U.S. Nuclear Regulatory Comission  ;

Tennessee Valley Authority 2600 Igou Ferry Road j

SN 157B Ltokout Place Soddy Daisy Tennessee 37379

Chattanooga, Tennessee 37402-2801  !

Fr. John T. LaPoint Mr. Michael H. Mobley, Director ,

Tennessee Valley Authority Division of Radiological Health

) T.E.R.R.A. Building, 6th Floor j Sequoyah Nuclear Plant  ;

P.O. Box P000 150 9th Avenue North I Soddy Daisy, Tennessee 37379 Nashville, Tennessee 37219-5A04 Mr. M. Ray Dr. Henry Myers Science Advisor l Tennessee Valley Authority Comittee on Interior  !

Sequoyah Nuclear Plant and Insular Affairs P.O. Box 2000 U.S. House of Representatives Washinqton, D.C. 20515

] Soddy Daisy, Tennessee 37379 ,

! Mr. D. L. Williams Tennessee Valley Autherity

( Tennessee Valley Authority Rockville Office ,

400 West Sumit Hill Drive 11921 Rockville Pike W10 BSS Suite 402 i Knoxville, Tennessee 37902 Rockville, Maryland 20852 j County Judge Mr. S. A. White  ;

Hamilton County Courthouse Senior Vice President Nuclear Power .

j Chattanooga, Tennessee 37402 Tennessee Valley Authority ,

6N 38A Lookout Place  ;

j Chattanooga, Tennessee 37402-2801 ,

1 I s 1

I i

a l 2

i

- ENCLOSURE 1 LIST OF ATTENDEES FOR SEPTEMPER 15, 1988 MEETING ON TVA'S MIC PROGRAM Name Affiliation J. Donohew NRC/OSP D. Smith NRC/OSP R. Mays TVA A. Poole TVA D. Goodin TVA C. Brimer TVA F. Hartwig TVA 1

I l

\

l 1

TVA - Tennessee Valley Authority NRC/OSP - Nuclear Pequiatory Comissinn/ Office of Special Pro 4ects i

i I

1 1

I l

1

ENCLOSURE 2 AGENDA G00 DIN I, INTRODUCTION .

G00 DIN II, FLGP0SE G00 DIN l III. OBJECIIVES i

P0 OLE IV. BACKGROUND BRIMER

$ V. DISCUSSION Of ADDIIIONAL IIEMS LISI IN NR SAFEIY EVALUAIION l '

F0 OLE REVIEW Of $@! INIERIM REPAIR PROCEDLIES VI l

l IORMICD.W.GEDWilDSINERCW?!?ING i

h G00 DIN 2

VII. CURG. T SIAIUS OF BIOCIDE INJECIION PR i

i GC0 DIN VIII 50?.GY i

i XI. DISCUSSION f

l 1

PURPOSE

. 10 PRESBT THE CURRDT SIAKS Of WA'S ?!IC PROGRA)! AND THE D!PLDIDTATION Of ADDIIIONAL IID!S REQUESIED IN I3E )!AY 1988 SER

, I0 PRESBT IVA'S EVALUAIION ?R00ESS IF [f)D.GE CRIIERIA IS EXCEEDED

, 10 PRESBT IVA'S Cf.TINGENCY PU.N FOR INSIAllING A SIRUCIERAL SLEEVE mi ii n um i

OBJECIIVES i , OBIAIN h30 00NCERENCE WII3 IVA'S DIP!DIENIAIION Of THE i

! ADDIIIONAL IID!S ,

j l

. OBIAINW U

. C CONCE. CE WIIB IVA'S EVALUAIION ?R0 CESS I? Li.E.!GE

)

CRIIERIAISENCEEDED i  !

i l

, OBIAIN NR0 CONCERENCE WII3 IVA'S CONIINGF.NCY ?!AN I a

ASTRUCIEALSLEEVE  !

1  ;

) i i

i  !

l I

1 4

l 1

i

t p

3ACKGROUND DAIE l IIEM DECEM3ER15,1987 l

. IVA N 20 FIEIING l

JN)2Y4,1933 l

.T SIINGE0USE13DE0ME!IING t

JNARY20,1988

. IR .

10 20 ON SQN MIC PROGRAM

,20SAFEIYEVA!UAIION MARCH 31,1988 f f

APRIL 4,1938 l

.IVALIIIERTO20FORRELIEFREQUESII0 ASMI SECIION XI FOR EiG ?IPING

~

l

. IVA !EIIER I0 20 0N CulIFICATIONS fly 6,1988 l OfSQNMIO?ROGLO!

,NRCACCEPI!3CEOfRE!IEFREQUESI yli11,1983

$UEJECII0INCLUSIONOFADDIIIONALIIEMS

u i

F ADDIIIONAL IIDlS FROM NRC SER .

l NRC HAS ACCE?IED H E MIC PROGRAM WIE HE F0LLOWING  ;

1. P.0NIHLY VISUAL INS?ECIION Of IDENIIFIED LEAKERS

2. AN ASSESSMENI 0F LEAKERS I0 ENSEE THAT IHE SIRUCER ISNOTVIOLAED?RIOR10SCHIDUlfDRE? AIR  :

3. VERIFICAIION HAT IlilEAKAGE DOES NOT FlCEED 0.5 G?M IN WELD OR 2.0 G?M CBilAIIVE IN ALL WELDS  :

4. BSIALI.AIION Of A $3CCIURAL SLEEVE REQUIRES PRIOR NRCj OfMEE00

, l l

l \

i l

l l

l i

u q

r SER REQUIRDIENT 7

THE FREQUi30Y Of DIRECT VISUAL INSPECIION Of W ISINCREASED10>!0NI!!Y. '

f IVA I)!PLD!!3IAIION PU3

. PERf0R)! MONIHLY '#l.KD0'u l I

. VISUAL!Y ASSESS LDIME I

I IHIS PROGR.01 M C0. PLIES 'a'II3 SER .

i 4

SERRIQUIRBf3I i

i AI IHE S!3E ID!E LEAD.GE IS DEIECIED, !3 ASSESSSIDI IS >!GE I0 t i

ENSEE IHE ACCE?I!3G GIIBION IS NOT EGEDED BIOR 10 IE l SGEDULED OUIAGE OR RE? AIR.  !

I I

IVA D!?!DlDIAIION PI!3 l EE SEQUOY!3 INS?!CIION B0CEDGE INCLUDES GIIERIA FOR I3Il ASSESS:UI UDB II-109. l

. A liRR IS ID5Ili!ED SY EG00. .

t

. LGIOGF).!!Y Of I!E ELD IS FBf0D!ED.

l l

. CCfiLAIIE DEFECI !BGIS IS C0)1?ARED 10 IE LDlII LOAD ACGPI!3CE l 1

GIIBIA. l

. EROUG30UI IE !3A! ISIS, 3/S-!NG ?)3 GIN IS >LA.!NIAINED.

u RES?0NSE I0 MONIIORING SIRUCER.i.l. INIEGRIII CNIII. CEANGIOUI C.G OCCUR

.a.r::1.i.sn..t .m. I :.:.t i.;

a::u

. . , . . . . , 3. . . . .. ..

,  : n ..s,ulb .... .. c:.n, ....ua . . .a. ...

e.ns.:9, ,v.iAnt..i :.e. : vaC,,a..., . , ..e !.u:

0n..iD, 15,..ye. ..  ; 7;

. u.3,.1.,.

. . ,..,7c.D a, .,,0,iu t: 3. .,._n e:.::. C .-..es:.

.... r.a-e::r.

.t. .  :.nJ .

,y us.

. 1:. ..f:.L10.0,CC,1y[O,!'.

'. . . 4 ult.7,7.;.u..I.)rfit.R0.0N.,.

e. I. .

, . :. .7.\.. 2. u.,lu,x.A .,,3..,i 3:. 3:.V7..D  :

.b: a..,.d1DB. .. ,,, Oh. ,0IT.,.u bu

\'0NII0 RING 0? 1.E.EING AND NONIEEISG Wi!.DS,

, .c:.

. !..s.aue. ...i I,!.. 0r,.D

. n t. u. !... !A us h. ,,x..D  :.. 0.5 , 2 d..,..

. 6. ....,

a:.1. ea

....rg...,..

u s e -<r n. u::.u ...... .ci.u.. o.. r.,..C,.. a 3:1.e..: ,,;. ..d.. ,.0 e,.,O, .. s..y,..n .i. :.s

t r.u "A":!f.77),B.0:"0:.C;;3**:B, I

l

1 I

s

$!R RE0CIRE'i!NI l

VERIFICATION BAI IHE laXAGE D0!$ NOT EEEED 0,5 G?M IN A '

i .

4 OR 2.0 G?M IN A!!'i!LDS n.i. i.v:r.:vn

. . u.a...c.i.4 .: g.

.g '

i .

- ,CC....s6.,' CR, I*t'u'Ie'. O'r I'n" V. 0T. in"I

. b...: Ti... taV.3.;l... u .o in e. ut..

i 4

4

,.A.Mt A

I...n,y A.)

/

4 1,

. I.: ... Jc I..R,1A ina u. c,h. unC..DED:

l i

IEE ?t_1.'il RES?0NSE 'illt !! DEIERMINID if I3E CAQR I

i

- .......N.,30R..l..NI, in du:. e u: Jill..s.0.l.I.D a.ii:t i

,i.

0?!D.3ILIII 'illt !! 3ASED ON il0'i I0 COMIONI.NIS AND

l. ..L,.s u3. in .,;..h.,,7

.. sa.t a

.m c.,n.c.Qr.e.c.'i (a: > 1.0)

' ua...a.

i<... .e.:.3  !

I d l 1 1 in. ::

., , .7i , alt.t :i. t u'

.i . . . .

.: O.. r:.t1....

n a .... .

.e. , g. a n :s... en .D ,

)

) .. i

, ....................,c.0...3

' ..:::.u:3.e..: .::.: :::L . . i 1

l

.: w. ..' n : a:i,. ..v.

.... .u. ... ..:..a. ..:.;..

.s,:. . = .c.. n swiCe......t.::. e.4e.

i 4

07. 7 U.. 7 I.}. f.'.g 1..U.) II1*g*Y.7 !177

,i s i

4 1

I..

m RES?0NSE 10 !!AKAGE EXCIEDING GII!i!A ACCi?IABILIIY2 ASIS

1. RADI0GRA?EY Of A??iOXI)LAI!!Y 35 'iiLDS .GD DESiiCCIIVE EXENAIION Of A??iOXIMAI!!I 60 INDICAIIONS IN 12 ELDS EAE ONLY IDB'IIFIED

?IIIING DAMAGE. N0 EVIDENCE Of GAGING .5CE.0 ISMS (SCC 02 FAIIGE) '/AS F0LE. .U.?ID GROSS FAI!GE OF IEE 'dLD J0BT 'ilLL N0I OCCG !.EER IHISE CliCESI. MIS.

2. El Ai?!CIED ELDS ARE IN MAIN HEAD!iS FOR EIG 0.5 I0 2 G!M

!!!D.GI IS A MIN 0R ?!0'4 RED (!CIION, IVEN IN A 'iOESI-CASE ACCIDENI CONFIGGAI!ON. -

3. RA'i 'iA!!i INVBTORY IS INTINIII (0XG-IE10CG3 i!Vil 'JAIli i t

503 0). l 1

l

U q:R

..a. e0in'ingy;Ni L.

a

...,.(,,,

.::av .% t I\....

bla 7.13.IO\..i.Or1.:<..

1 S..d.C.;.,

. :.:. : at. ,; qI...;<.. . . L,I,sr. .AgcR \..,p; .

d .

Vi~

. .. . "..n. D. .

1\ ,n. ,1.'J

, , 7. . , , . s. . . . . . s. . . , ,.

..'. .iit.a .U.i :.e.i

-t .i n.3.

.. y$ . 5ua 3..,0?.O, A ,:,n.D: 31r'i:D .- 3:.n h.1.3 v c*. Cni. uk. - s u- ' :u'a :.au' 1

1

.m.t ICn'II0'i.

,t.c,.,r. .,'O u3 n ,3:.: ..,,,.....,3,,13 .umb

< 1,:c,.n..D.iC1. .u . n

. 10 ..2 b...D  : ,e.,.,i

,a.

,. . ,,.. ,s..

3.,t. \.

. ,d.1 ..::..h;L.IL

. . . . . . . s,a CV,,.il 7 :..h... 3 L : '.te.1 it..Q

. \. 0.112. .. :3.43 C a:nt:.41 1

\

. .., ... 3.,,g.. ... ... r,.C. 0.,

. .i!!a r. ::..: .u.u!. 1:'.a 5: *.L,

" 11N

. , . . . . . . . q. ..

. .i ., 3 r o. n1

..,t.

. , . i ... A \.........i

... s.. ..

. .\ ,7. .,. .c.. . , .y... g.

.il.,s.. ..,..

i ,, ...

l I

1 l

l l

l l

T U

e

• e S

e ei?l'C {s

,. -s.x vece $

~

.itt a .P60 0 m a s

C. .I u 4

I

" - - _ _ _ _ , . L----- '// .

g

. 3 V .- is R  :%I ll ll / vh

, 5 gt ii ...

f a , ,,

/

g _ _

w!

l i

_/ _ _ _ _ _  : _:l::_______q\.'./,; # g.

_._ N. _

'2 7 s! (

A llill / l@: .

, - w _ _ _ _ _ , ;_,

g- gg

, g l t R

ll,'ll s sE I

\:

.: es 2-a t h;. ll' ll ij l -

-- - u .u--- --.

0 c =L ,

1 1 . ,

l l

l U

l M l 3 l

M i

$ < s I M / '

l l

\, *

'\ .

T l -

s' D i s j'a gg i N, ,

e i

l 4 4

v. ,

el ~, w .sas

'cu N

1 d R l

1 1 .

. REVI!VOi$1.EEVE'i!IHREGARDIO  ;

I Pl?ING.23A!YSIS

. 1 4

i- :

1 )

! i i  ;

c:t.nIs. 3.':*h*n.:

a. . c. :30r.:.nn..,:. .!.\;D a :.0<- '4:.t_0 IN. (?;CiM.N3' s  ;.' .(.(.:.s':

, , . s . .

1 J

10DT.GY INTEGRIIY, .

y '

I l

i a

, ' JIG 3I 0F $!!!VE 210VIDES !.E55 IHAN A 5-iERCDT INCREASE IN IEr b SINGLE SPAN 'dIGBI Of ?I?ING. t l \

l . $EI53IC !3ALYSIS 0? ?!?!NG SYSIE3 IS NOT D!?ACIED ?ROVIDED IE .

I f

4 i I:: 'iD.9:10 (.IJEVES .El ?"..;. $?.!.'i I.S i.Il. t.7. D.

J . ....h.. A...CEh,d.

1::. du:.  ! u. i,s u.D c..,3.3 ::.6. .NL!.ED.D I  :. IN in:. . ?!?!NG l

\ .

4 -

- i--

r3e,.l......

1313 ... . ... Is .u a dined rd31:1..ut0h AC10-  : s (d!:) (9.1). l

! t I

T

. SI.EEVE EAS SICIION X00Ul?S 1.GGER N I?.!.1 Oi!GI. AL ?I?! A.\T MINl

{

h,All....U.....,,.....,3Va!GB.A.....!.  :!!:..

. :!'. :. 3 13 :..k a 1 -  !

l

.:..r.*;....

y; :'.!. :....i

.::vg s.e.:; w7. .;. i gg: .::;.'. tit.

. . .w, . . . t."I.t..:.;,.

i ,

i f t

......s-. . .....I f ...) .k ,..t ............i. ..........  !

e

.i l

! . i i  :

3 I t

I l

(

STRUCIUPAL INTEGRIIY/ SLEEVE ACCEFIABILIIY 4

. I8ESLEEVEWASDESIGNED10MEETREQUIREMENISOfUSASB31.1AND

! INSIAllAIIONANDIESTINGWIllBEPERiONDINACCORDEEWIIH r

SECTIONXI. j l

. BE MIC SLEEVE IS A TEFORARY INTERIM RE? AIR AND WIll BE l l SINCE MIO HAS 3EB $20KN 10 BE REPU.CED AI IHE NEXI OUIAGE i

ALONG-IERMPR03l0ANDSINCEPERIODI0MICINS?ECIIONSWIll j j  ;

k CONTINUE TO BE MADE MONI3!Y, N0 PROBlDS RELUED I0 MIC DM.GE )

1 I Of EE SLEEVE ARE NICIPAIED. l l  !

i i

• l i

i  ;

! I

! l 4

V {

l

l i

4

7 i

p .. p . . . . . . . . .. . .. .

.g , \!

b .55.>.. A' s. '. )6 ap w .

3} ., .

4. J . . g,21 .i .,

. .. . - .... g.,.... . . . . . *

• fa * * *

• f-

. 1. w%..I.i.l. ...4, ,[ 6 e

.i .a .A 6. . 4 *. i4....f....

, .t .I .

. .l.l I.1.

s

. v I w% 1.=.

4 k.M */e..

. .i . .

....Iq, ; . . . . .'r. .e.J. .i,, . . . . . ..

s ..

g,..

j .g .P '. g g, ..*9

.. ..,f....u

. .4 .g

• p ,* . ... t-. .s

, i ...e w

.q .

l 4

2. INTEGED I0 I'GI3II ADDIIIONA!.1IC AI?!.C.s !.\~0 CONTR01. G10'iT3

0. , :. I...ui.

.. . . , Lr e. y l .

l 4

I

. .w. ./.n.. A'A .:rvi.n. l.  !

I

1. . .i .s,; ... ,. . . i. . .s . ....a v .. t. D . . 1. . .s, ...'...i_-

v........., .

, , .,.,,. .. .. i

%s..i . . ..o. .. .. .,. ,,.. .., . . ..

s...s......... .

. ..s,., . . .s .,..- .s . . : s... . .. .. .. ...: s,

.s.

i i

i I

.,.,. l

. . ...... . . s, i ..,.,..s. ..... .. ..,.

1

... ,.. .. . .. . . .,. s .. ... .,. .,. ., .... s. .. .. ,.. .. .. .. . . s,.

.e l

l .,

. . . . ,4 .s...s...._....,..

4 E 1

l r

i SD?.GY I f

i

. IVA EAS FRISDIED BE ADDIIIONAL ITES IEAT EAVI 3EIN l i

INCORi0D.HD INTO THE MIC ?!0GD3 IN !!$iONSE I0 IEE I

E!Y 11,1953 i.\~01GCE 31,1988 Nic Siis. .

- MONI3LY VISUA!. INS!!CIIONS l

- ASSISSMBT Of SIRUCIURAL INiiGRIIY 10 USEE ACCIII.GCE .

i GIIBION IS NOT ECEIDED PRIOR 10 AN OUIAGE OR E? AIR l l

- lIAD.GE DOES NOT ilCIID 0.5 Gi3 in WILD OR 2 GiM I0IAL i I

I

!Dl!G'

. IVA HAS iRISDIED IIS EVA!UAIION iiOCESS I? LUI!GI GIERIA  :

i l

ISI5(If.DE0. l i

. IVA EAS iRISBlID IIS CONIINGUCI ILG IOR INSIA!J.5G A l J

SIEUCRillS!!!VE. I i

i i 2

]

I j process if the MIC leakage criteria is exceeded and its contingency l

plan for installing a structural sleeve. The staff stated that it could not l concur on the above based only on the meeting. The staff stated that TVA

' should submit the details of the MIC program at Sequoyah for the staff's review ,

and approval.

4 '

TVA continued its presentation whh a discussion of the background of the MIC j

' program and the additional items listed in the NRC SER dated May 11, 1988, t These additional items were monthly visual Inspection of identified leakers, an {

assessrrent of these leakers, vertf tcation that the leakage does not exceed the  !

1 criteria of 0.5 gpm per weld and 2.0 gpm total, and acknowledgement that the ,

i use of other than ASME Code repairs such as the installation of a structural  ;

j sleeve, requires prior approval by the staff.  ;

} TVA then presented the interim repair procedures, including the installation  !

i of a structural sleeve, at Segunyah for MIC damaged welds in ERCW piping and  !

the status of the biocide injection progran at Sequoyah, j 1

I j TVA concluded the r'eeting statirg that it would submit the details of its 1

reauest for staff approval of the MIC program at Sequoyah in a letter by i j October 31, 19R8. It stated that it would request the staff's approval on the i i MIC progran at Sequoyah and the contingency plans to use structural sleeve for i i severely M!C damaged ERCW piping.

? i 1

1 Jac N. Donohe Jr., Project Manager

! ' TVA Projects Division .

Office of Special Projects [

l

Enclosures:

i

1. Attendance list  !

?. TVA's Meeting Handout  !

l Distribution j cc w/ enclosures: Docket File NRC POR E See next page Local PDR Those on attached list  !

i 1

i l I l  !

1 J

6 _ .

lOFC T ,:054 :057iTIAFy TVA:A /F  :

l .... 3.g}{...:...

i

NAME ims

J s :05mith / SBla  :  :  : :

1.....:............:.............:......g:t j DATE 200/6 /88 :09/2E'88 :09fp195 /

09/ vyss  :  :  : l OFFICIAL RECORD COPY

_