ML20003B285

LER 81-003/03L-0:on 810106,during Routine Insp While in Cold Shutdown,Main Steam Line Snubber 413019 Found W/No Visible Fluid Level.Caused by Plastic Fluid Reservoir Damaged by Overheating During Outage.Defective Snubber Replaced

ML20003B285
Person / Time
Site:	Millstone
Issue date:	01/30/1981
From:	Tresetar J NORTHEAST NUCLEAR ENERGY CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20003B279	List: ML20003B278 ML20003B285
References
LER-81-003-03L, LER-81-3-3L, NUDOCS 8102100598
Download: ML20003B285 (1)

Text

47 77) y LICENSEE EVENT REPORT (FLEASE P;ilNT OR TYPE alt. REQUIRED INFORMATIONI lh CONT 7.ol BLOCK: l l l l l l i .

7 8 9 Ic ITLICENSEE

! Mi ni si 21@l n i n i I n LaCENSE COOE 14 15 in in NuvaER in in I _ I n i n l@l411 26 26 I il il il@l57 CAT LICENSE TYPE JO I

$8 l@

CON'T IOIiI s% LlJ@ln i s i n I n i n I , l , in l@l 01 69 110 i e I a 1i 74l@l011 75 1310 la 11 80.l@

REPORT DATi;

? 8 60 81 DOCK ET NUMB ER 68 EVENT DATE EVENT DESCRIPTION AND PROBABt.E CONSEQUENCES h 10 l 2 l l During a routine inspection, main steam line snubber 413019 was found with nn vicihlo l 10121 I fluid level . At the time of the disenverv tha n12n+ m2e in a enla ehnt%wn cnnai+4cn 1 10141 I The snubber is an ITT Grinnell, FIG. 200, 4 inch bore by 5 inch stenka unit I l0 lsI I Similiar LER's 77-47, 79-28, 80-12 l I

10181I 10171 I I I

l ois i l 80 7 8 9 COE SUSC E COMPONENT CODE StaCodt S E 10191 IH l Bl@ (.3_j@ [C_j @ l s l It I p I n l a IT lh W@20 U h 18 19 7 8 9 to 11 12 13 OCCURRENCE REPORT R Evls,0N

, _ SEQUE NTI AL EVENT YEAR R EPORT NO. COCE TYPE NO.

LE R/RO

@Nggg a 18111 1-l I nin i,1 1-1 I ni ,1 Li_1 1-1 laj

_ 21 22 23 24 26 27 28 29 30 31 32

~

i K N A O O P NT tET HOURS S 8 iT FO 8. SLPPLI VAN FAC RER LrJ@L7J@ LzJ@ L2J@ In InininI LLJ@ LyJ@ LAj@ l44t I ? In 1747l@

37 40 di 42 43 S3 34 35 36 CAUSE DESCRIPTION AND CCRRECTIVE ACTIONS @

l 110 l l The plastic fluid reservoir deformed due tn nvorhaatinn when insulating nads wara l I, li I I installed over a portion of the snubber after relocation of the hancer and snnhhpr l

,,,,,i during a recent outage. The defective snubber was replaced. An inspection was cer- 1 I i i s ! I formed verifvino additinnal hanner wnrie hae nne r=need eimiliar neenren,ee_ l l

li l41 I

' 80 7 8 9 STA  % POWER OTHER$7ATUS 015 O RY OISCOVERY DESCRIPTION IiisI[SJ@ lnIninl@l na I Laj@l OPERATOR OBSERVATION l A T1VITY CO TENT 8;ELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE I i l 6 I [2] @D OF RELEASEWgl NA I l NA 30 l

7 8 9 10 t1 44 45 PERSONNEL EXPOSURES .

Nuv8E R TYPE DESCRiPTtON l~

l i l 2 l I n i n i n l@lLJ@l NA

' ,E R so~~ El'INJ ES

~Uv8 E R D ESCR,PTiO~@

l li7 t a 8l 9I n i n i n l@l12 11 NA 80 TY E DESCR PT ON NA l I i I 98I 9(_Z_Ql10 80 7

7 8 9 155 1210 l l f[@lDE to CRIPTION NA I 68 89 llllllllll l1ll 80 3 J hn G. Resetar Jr. 203-447-1791 810210057T , , , , , . . . 2