ML19309E119

LER 80-012/03L-0:on 800314,during Routine Power Operation, Hydraulic Snubber on Hanger 490001 Found W/No Visible Fluid Level.Caused by Seal Deterioration Due to High Vibration. Snubber Replaced

ML19309E119
Person / Time
Site:	Millstone
Issue date:	04/11/1980
From:	Crockett J NORTHEAST UTILITIES
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19309E116	List: ML19309E115 ML19309E119
References
LER-80-012-03L, LER-80-12-3L, NUDOCS 8004180411
Download: ML19309E119 (1)

Text

LICENSEE EVENT REPORT CONTHOL llLOCK: l l l l l l (PLEASE PalNT On TYPE ALL nEQUtnED INFORMATION)

~

u 58l@

lo l 18 l9 l C l LICENSEE 7 T l M CODE l ft l S 14l 2 l@l 15 0 l 0 l -l 0LICENSE l 0 l Nut 0 /DLH l 0 l 0 l - l 0 l250 l@l 26 4 LICENSE l1 l1 11 l1 l@l$7 CAT 1YPE JO l

COWT l0l I 8h "$ ,$ I L l@l0 l 5 l0 l0 10 l3 l3 16 l@l 0 l 3 l 1 l 4 l 8 l 0 l@l0 l 4 l1 l1 l8 l0 l@

7 60 Gl DOCKET NUMBER CH C'J EVENT DATg 74 75 HEPORT DATE B0 EVENT DESCRIPTION AND PHODADLE CONSEQUENCES h t o 121 } During routine power operation, a hydraulic snubber on hanger 490001 was found with no I o 3 l visible fluid level. The snubber was replaced and subsequently tested and found to I o 4 I operate erratically, indicating air had been introduced. The unit was operated per I o s l Technical Specification 3.7.8.1. The snubber is an ITT Grinnell, Fig. 200, 3-1/4 inch 'I o o l bore by 5 inch stroke unit. No safety significance as snubber is non-safety related. I 10171 1 I 101811 I 7 8 D 80 DE CODE 5 BC E COMPONENT CODE SU8C dE 5 E lol9l lH lB l@ LEj@ l B l@ l Sl Ul Pl 01 RJ Tl@ W@ QJ @

7 8 9 10 11 12 13 18 19 20

,._ SEQUE NTI AL OCCURRENCE REPOnT . REVISION LF R EVENT YE AR REPORT NO, CODE TYPE NO.

g O g;o/HO 18101 l-l 101112 l [gj l0l3l lL l [-j [0j

_ 21 22 23 24 26 27 23 29 30 31 32 T KEi AC IOr ON PL rT F ET 4 HOURS SB i F F b B. 5 PL1 MAP FA TUF EH LcJ@l 33 34 xl@ L1J@

35 1718 3G 101010 lo i 3/ I41 NI@ Ltd@ I^l@ 1112l01716 40 42 43 44 47 CAUSE DESCalPTION AND CONNECTIVE ACTIONS h i o lCause due to seal deterioration due to high vibration. Unit located on highest I li li l lvibration location MS lead to HP turbine. All similar units inspected satisfactorily I ii 171 land defective snubber replaced. All originally installed units on the llP turbine steam I li13l l leads will be replaced or overhauled as necessary during the Summer 1980 refueling i i 4 [ outage. I 7 8 9 CO -

ST JS  % POWFH OTHER STATUS 15 RY DISCOVERY DESCRIPTION i s [E_j@ l 1 l 0 l 0 l@l NA l l Bl@l OPERATOR OBSERVATION ON ROUNDS l A TlVITY COr TENT nEu Asto OP nEu ASE LOCATION OF RELEASE @'

li lo8l 9llj @ l 21@l 7 10 13 mount OF NA ACTIVITY 44 l

45

@ l NA I 80 PERSONN(t. FXPOSurIES NUMBEH TYPE DESCFilPTION lilil 101010 l@L '

zJ@l NA l Pc n:ONNc'L iN;u'atS **

Novo,n otSCniP nON@

,Ii la l 1010 lo l@l

NA I 17 8 9 11 12

' 80 WA ' 'e^J2iO,' '^

' LLL1]

7 a 9 L2J@l30 NA moAl1 B0 I

ISSuto Punt sci rY DL SC RIP flON SOg'4 W NnC USE ONLY 9

l bb ,  ! ,!!!l!!!!

7 8 g to 80 68 09

• ~

NAME @F PHIPen'UA - -

N