ML20058L067
| ML20058L067 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 11/11/1975 |
| From: | Grue T NORTHERN STATES POWER CO. |
| To: | |
| Shared Package | |
| ML20058L058 | List: |
| References | |
| LER-LER-751111-02, LER-LER-751111-2, NUDOCS 9105070377 | |
| Download: ML20058L067 (1) | |
Text
'
LICENSEE EVENT REPORT CONTROL BLOCK l l
l l l l
l
[PLEASE PRINT ALL REQUIRED INFORMATION) 1 6
K E N;t t t rC E NSE E vtNT N AL't L IC E N St Nuytsi k T
- Pt T
- Pt M lN l M l N l Pl 1l l 0 l 0l-l 0 l 0 l 0l 0{ Ol-l 0l0 l l4 l 1 l1l 1l 1l l 0l1l C1
' 69 14 1b 25 26 33 31 32 hCO*rT l Pl d y'7p[ s D $t cA'I Gau occ* s ' Nuvst n E. TNT Datt 4tpom7 CATE lLl l0 l5 l 0 l-l 0 l 2 l 61 3l l 0 l 9l ll 2l 7 l 5 l l1 l1 l 1l 1l 7l 5l 7 8 57 be 39 co e,
se e9 74 73 80 EVENT DESCAiPiiON
$ IV,ile conductine local leak test it was found that main steam isolation valves l
7 89 80
@ l AO-2-80C and 86C vere leaking in excess of Technical Specification acceptance cri-l 7 89 80
$ !teria.
Pilot and main poppet seats were lapped.
Retested and passed local leak l
7 89 80
$ l test for combined leakare.
Similar previous events.
(AO-2 67 / 75-17-2 )
l 7 89 80
$I I
7 89 80 svnte cAcsr counydv tovpoNe w CCDL CCli COVPONENT CCDE s>RE E MANJ ACTUM S VOLA'U.
[C l Dl lV lA l L l V I El X}
lA l lA l5 l8 l 5l
[Y l 0
7 89 10 11 12 17 43 44 47 48 CAUSE DESCAtPTION gg {Atwood and Morrill Company, 18-inch Y Type Globe Valve, Drawing 20786-H.
Cause of l 7 89 BD EE lleakare unknown.
Pilot and poppet seats lapped.
l 7 e9 80 DE I 7 89 I
80
. A;u,
vi ~or os s'A %
- epart O'-Fa s Aius D s 0.'t ov oscosta DiscmcN h
d l0l0l0l l NA l d l I:A l
7 8 9
10 12 13 44 45 46 80
'N-T A
c:vis, Ef ano 0+ 41.t A st Avous' 08 A: w '+
to A nDN cr nt.t z u
[Z_)
b hA l
l NA l
1 7 8 9
10 11 44 45 80 PERSONNEL EXPOSURES NUVBEE l
DE SIAIPTION DE D l0l01 y'Et I:A l
7 69 11 12 13 BC PERSONNEL INKA ES NevEEE Ots: Art ;4 EE h l0 l0l l!:A l
7 89 11 12 60 O U S:TE CONSEQUENCES p;A l
7 89 80 LOSS CR DAMAGE TO FACIUTY Y + PE DE SC Arp'0N NA 7 S9 10 63 PuBLICIT Y 3 lv l
7 89 80 ADD.T 6DN4L FLCTCAE
] lS '.
l 7 89 60 9105070377 751111 TF
-8L CF ADOCK 05000263 l
es CF
,g so T
P crue Nmt p,.c..
M 2 / 24 5-51:1 f,P O 881 637