ML19323G172

Supplementary LER 80-003/01X-2:on 800109,during Eddy Current Testing of Tubes in Unit 2 Steam Generators,Several Indications of Tube Degradation Were Observed.Cause Unstated.Several Tubes Plugged & One Removed for Exam

ML19323G172
Person / Time
Site:	Prairie Island
Issue date:	05/23/1980
From:	Hunstad A NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19323G170	List: ML19323G169 ML19323G172 ML19323G175 ML19323G177 ML19323G178
References
LER-80-003-01X, LER-80-3-1X, TAC-12657, NUDOCS 8005300496
Download: ML19323G172 (1)

Text

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LICENSEE EVENT REPORT OU PORT DATE 030680 O co~' o' 'oc = i, i i  : i i ie <' '~' 'v " ee' ='~ ~>

R lM8 9!N lPLICENSEE 7

lIlN lCODE 2 l@l 0 l150 l- l 0 l 0 lLICENSE 14 0 l 0NUMSERl 0l -l 0 l 0 l@l 25 426l1 lLICENSL 1 l 1TYPEl 1 JOl@l 57 l C#~'A l@

CON'T l0l1l 7 8 En"C GClL l@l610 l 5 l DOCKET 0 l 0 NUM8 l0 lER3 l 0 l 668 @l69 0 l 110 l 9 l 8 l 074 l@l75 0 l REPORT EVENT DATE 5 l 2 DATE l 1 l8 l080 l@

EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h firTTI I During eddy current testing of tubes in Unit 2 steam generators, several indications l lo lal l f tube degradation were seen. Revision 1 to this LER details the Event Description.l

[ o l i-] l Revision 2 provides supplementary data requested by the NRC staff. l 101s1 I I lo is I l -

1 10171 1 I 101811 I

• $'E C0DE SBC05E COMPONENT CODE SUSC dE S E 7

O 9 8

i Cl B l@ LEjh [Dj h lH lT l E l X l C l H lh Jh J h 9 10 11 12 13 18 19 20

_ SEQUENTIAL OCCUR RENCE REPORT REVISION LER/RO EVENT YEAR REPORT NO. COOE TYPE NO.

h ,RE

_ 21 l8 l0 l 22 l-l 23 l0l0l3l 24 26 y

27 l0 l1 l 28 29 W

30 b y 31 32 K N AC O ON NT ME HOURS S8 IT POR 8. SUPPLI MANUPACTURER

[B_j@[ X_j@

33 34 W@ (J_lh l70l1l4l4l d h l_Ljh b@

35 36 3 40 41 42 43 l44W l1 l 2-l 047 l@

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l Several tubes were plugged and one tube was removed for further examination. Reports;

, , l c: nondestructive and metallographic examination of the removed tube and chemistry l

,  ; surveillance are enclosed as Attachments A, B and C, respectively. Other corrective ;

actions are detailed in Revision 1 to this LER. l i 4 l l 7 8 9 80 STA US  % POWER OTHER STATUS dis RY DISCOVERY DESCRIPTION i s [ Hj@ l 0l 0l 0lgl N/A l l B_J@l Eddy Current Testing l ACTIVITY CO TENT RELEASED OP RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE 1 6 h [Zj@l NA l l NA _

l PERSONNE L EXPOS ES NUMBER TYPE DESCRIPTION 1 7 NA l 0.l 0 l 0 l@l Z l@l l PERSONNE L INJU IES NUMBER DESCRIPTION 7

1 a 8 9 l0l0l0l@l 11 12 NA 80 l

LOSS OP OR DAMAGE To FACILITY Q TYPE DESCRIPTION  %./

i 9 [zj@l NA l 7 8 9 10 80 2 o [N_j ISSUE @lDE NA CRIPTION l llllllllllllli 7 8 9 10 68 69 80 5; NAME OF PREPAPER

. . nstad PHONE:

612-388-4767 2 m

800ss oo@s 5