ML20064D613

LER#78-026/03L-0 on 781025:Analysis of Instru Installations Revealed That Two Transmitters Assoc W/Channel a Steam Generator Low Water Lever Were non-seismically Mounted. Channel a SG Was Bypassed.Seismic Brackets Will Be Used

ML20064D613
Person / Time
Site:	Millstone
Issue date:	11/03/1978
From:	Crockett J NORTHEAST UTILITIES
To:
Shared Package
ML20064D609	List: ML20064D606 ML20064D613
References
LER-78-026-03L-01, LER-78-26-3L-1, NUDOCS 7811080161
Download: ML20064D613 (1)

Text

U/ I LICENSEE EVENT REPORT

.. a. -

, Co J Trot 8 LOCK: 1 (PLEASE PRINT oR TYPE ALL REoU; RED ItJFERMATioN) 8 I I l l l 6

lh )

i Ig foT711C

4 'J I TI MI LILENSEC CODE ni SI le Zl@l 15 o I o 1 -1 o I LIGErnt o

% I

• . Mo H I o I o I_1o23 Io 26 l@k li u:E*.".t li TV.*Eli li  !@l JG $7 CAT 63 ,

C ON'T l

ITFG ,"C." E' I60t.]@lGl01 51DOCKET o I oNU'#8 I oEsa13 I 316 68 l@l 63 1EVENT I oOt.TE l 2 15 I7 Ia l@l1 74 75 11DATE REPor.T lo I 4 8017 In l@

J 3 EVENT oCs0RIPT!ON AND PnoeAOLE CotesEoVENdEs h IOI2l l Correspondence with Combustion Engineerino indicated the cotantial fnr tha vica nf I pT31 Inon-seismic mounting brackets for certain safety-related oressure transmitters at I io ;4 j lanother power plant. Our analysis of instrumentation installations revealed that two I lo 151 Lransmitters t associated with Channel A steam generator low water level were non-seismicM1; o e imounted. This would result in the potential for inoperabilijy of Channel A low SG l g o j ,l [1evel and result in operation in action statement 2, Technical Specification Table 3.3-1L I

I0187 I "

r ao OE CO E 5 SC 't COMPOP.ENT COO! SL2d SE 5t., b f I O i S1 LLJA._l@ L.B.j@ LE ]h I T l N I E I T l R I ti l@ [T_J@ [.Z_j 20 7 8 9 to 18 12 13 IE 19 SE QUE NTI AL OCCU A N E.*:CE REF17 REViS60N ggq go EVENTYEAR REPORT NO. CODE TYPE NO.

@ ,aEl,gg l257 2218 I l-l 23 l0 l2 l6 l 24 26 l/l 27 10 13 I 28 29

[LI 30 l-j 38

[0_J 32

&

• aTO ON PL *T V.ETH MOURS 22 iS ti FC41 % $..PPLt IL* At FACTUMER

, L3J _J@l X A

_jg [3b_ jg Z

l36 Zjg l0 l0 l0 'ID'l ldiN l@ l42N l@ lN l@ lF 44 l1 18 l0 47lQ 34 3# 40 43 CAU';E oESCRIPTioN AND CoRTIECTIVE ACTIONS h l, i e i lUpon determination of the transmitter brackets non-seismic nature, the Channel A SG I g , i, i il ow level was bypassed, resulting in operation in 2/3 trip looic. Seismic brackets I

, , pill be installed at the next plant shutdown. Transmitter data: Foxboro Model E-13 DM. I

~ ~

f$ j l l I

ITTTl i SYA  % POV:ER OTHERSTArus is HY 015COVERY DESCRIPTION I

i 5 (E_J @' ll Io 10 l @ l" NA -

I L_QJ@l Nntificatinn frnn N994 4!TiviTv COSTENr attf asEO OP attf ast TOC 4TiOs 07 Rett AsE @

M ll_} @ LZ.j @ l aucuNT NA OP ACnvity @ I I NA I 7 8 9 to i1 44 45 80 PERSONNEL f xPOSURES Nur.te E R TYPE DEssRiPTION I

L' uJ' 10 to lo l@LZJ@l

NA i ,EnsOwEl'i~,u','iCs N u.4.E n OtsCRiPriON@ I NA l

i FF l.10

, , 10 lo l@l ,, ,, =

W,'E

,[I-[i]. ,Iz l @L l

s'R?,'O? '" @ NA I 78110s a l6/ ""cuS5o"'"

is t g dsut @ L','C.,PTio, @ l . NA l 11IlllIIIIIIIJ p 3 0 su G3 59 e NAuE or enCPAHEn J. Crockett .

, sons: 203-447-1791 - I

_ _.-.