ML20084S980
| ML20084S980 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 03/08/1974 |
| From: | Sewell R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Oleary J US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20084S983 | List: |
| References | |
| NUDOCS 8306200354 | |
| Download: ML20084S980 (2) | |
Text
y DIQgQ'W,
%CW; g I,m o
)
A V
gA d
,v
@ gg.
w
.c
- d,.
consumers g@b 5 a power o
V t
5 J Company L.
fpy U
oenerai o' vices: 2i2 west u.cn.can Avenue. Jackson, Micasgan 49201. Area Code S17 788 0550 March 8, 1974 Mr. John F. O' Leary, Director Re: Docket 50-255 Directorate of Licensing License DPR-20 US Atomic Energy Commission Washington, DC 20545
Dear Mr. O' Leary:
This letter is written to report an abnormal occurrence which occurred at the Palisades Plant on February -26, 1974, concerning the two-pump lov flow reactor protective system trip set points being found to be set at values less conservative than specified by the Technical Specifications.
The two-pump lov trip set points were found to be set as follows while performing monthly testing as required by Te:.hnical Speci-l fications Table 4.1.1, Item 3.c:
Channel
% Belov Required Set Point l
A 2.6 B
2.6 C
2.1 D
1.4 These settings were made during a January-February 1973 steam generator tube repair outage. At that time, the four-and three-pump low flow trip set points were properly calculated, documented, and set in ac-cordance with Procedure P-RP-9 It appears that the two-pump low flow set points were not cal-culated or set at that time because there was no intention of operating with only two pumps. The instrument supervisor recognized that if two-pump operation was to take place, proper low flow set points would have to be verified.
In the period between January-February 1973 and February 26, 1974, the plant had only been operated with three-and four-pump combinations.
Review of this abnormal occurrence revealed two deficient items.
These items and the corrective action to be taken is as follows:
.)
\\\\
,\\ 'nl, f 1 j - {g '. ] ; ")
r g.~
,-t !, i-8306200354 740300 PDR ADOCK 05000255 r
S PDR i
2 4
can -asua
O o
Mr. John F. O' Leary 2
e Docket 50-255, License DPR-20 March 8, 1974 1.
The Technical Specifications require specific settings regardless of whether or not a particular function will be applicable to contemplated future operations. All protective system settings will be established as required by the Technical Specifications prior to the next start-up and maintained in accordance with the surveillance requirements of the Technical Specifications.
2.
Technical Specifications Table 4.1.1, Item 3.c, requires monthly testing of the low flow trip set points.
It is not possible to test t,hese trip set points, when the plant is operating, for pump com-binations other than the operating combination and, therefore, the two-pump low flow trip set point surveillance was not performed between January-February 1973 and February 26, 1974.
A proposed Technical Specifications Change concerning low flow trip testing intervals and requirements will be submitted by April 1, 1974, in an attempt to resolve this issue to the satisfaction of both Consumers Power Company and the Directorate of Licensing.
Yours very truly, Ralph B. Sewell (Signed)
RBS/ map Ralph B. Sewell Nuclear Licensing Administrator CC: JGKeppler, USAEC 9
)
l i
I e
'i%$h[
Moe b^*hdYl
' QT&-
%LM$2 r.&,sW,!
1$i%:l
?
r.#.
U3 A rC 4 7.r N
,/
w C')V 3 ' l] -4.9 P Ti r"-
COV? %'Y
.nC'<S P5 V I C H I G A N'
')-2 7 -7 4 9-lo PV T.7 v'
rn.10Rt)nv len I nst
.'4 f7C t
Cf,ril E t,L V \\1 ] f, ITEF 1 FE:i 0 ' 1. ; TFLCCO'1 UITH V7t. FD J0. DAM ON
') - P S - 7 4 Fr ADUISU Y O'. OF A
~irCrNT VIOL 4f!P'
'T F 3rCTIOY 6.1.3 Or F91.ISAnr3 TECHNICAL spvCIFI-C1YTO "Y TO TH: 'W.0'i l a Fi'r.N' T F O - THiirr. 1.ICrv3rn 0.:r: TTO,;
CATION.
4 og 9-16-7A
r HAD ONLY T'/O OV SITF FOE A FF i10D OF An VINU fES.
DCTA ILS :'II.L F 7LLO'.<
IM L4 T E'i 0 0:- ~'.E S P ON DE s"; E.
8306200355 740300 PDR ADDCK 05000255 S
em nW',$.
Qg;.
4.._
\\
9" I T V'*
P J
- )
raJ S 11'Fv 1.' A s N O T 'rPOPTFD AY TELECOV.
1 T71?.ING COUTINE v0VTHLY'TFCH SPEC TE3iINn TAnte b.I.I.3C OV o or-74 Ist oVTICIPATIO'1 0F S tar'T-UP IT I~AS NOTED T'4E FU P F Ms L OL FLO'e T9IF
':EiP1IY r OY FACTA3 PROTFC T IVF S f S TF." '? A3 O'1TS I OF OF SCCP/.C Y LIVI iS I" A N S"C ONS E:'U A. f l Ur DIRPCTION.
IF Tfr. REAC10.i HAD "EFN OP ET;A TED AT P1EF? IN A C P4vP COVFIGT.4 TION THIS COULD MAUr 'iESULTgn IN 4 4AFrTi 5f::T7X 1rTTIYr DFI N'C FMCEFDED TECH SPrC TA51.C ?. 'i.1 0
THr I'"'r.D I A Tr if T:14 T I nv "AS Cn: 'rC TFn 'Y C a t.Citi.4 T I MG THE ? ;.0 ? ri' 3rTF31VT9 PE C3"-
m S T I O' 7.MF I' Fr': Ivr ?":0C EDUaE F-F.?- 9 A P;EN D I A AND P:iOT r' LY ADJ fit-IMc fHe S7T'20 I't i s.
A 1.1. 9 F i 3rTPOINT C'4AMcrS FILI. 7E DOC'JvrNTED "Y ^
'"'v0 TO FILv 4 N ? CnrY ATTACHED TO Ti4E VrMr %'OMTMLY TrCH SFrC TF9T S!rFI INVOLVF').
Irrv 3 fil 4 T'f f IS
- ITTFM TO YOU TO CONFI.'" 03h TELMPHONF. C O'JVr.i. S A TI OY3
;. DILL CISCH23 AN D 9 - 0 6-7 4 '.' I TM v'I. FD J 3 7.D A M.
or 9-91-74 "ITH GM R-21-74 A T 0905 ABOUT A00 CALL 7NS OF HOUSE SE VICF K A Tr.ii COM-TA IN!Nn A Sv4LL Av00NT Or enDIO4CTIVF. MATFRI AL A33'1T 700 vICHO Cf HIIES OF V I':ED TI SS IOV AYD ACTIVATIOY P.000CY3 FLOFF.D 09T0 TH7 nEACH I vv F D I A T r.LY *.:EST OF THF. WATEri TF:rA TyF.N T SEC T I ON 01-T H E 'I U il -
PIME DUIL7tNG.
I G
- k' Ils:
W.
.,s.
cq, NNMI k.kd"S w:w-um
..n.,.,. c Ivvh0IATT ACT!ON TAM ela s A3 F O !.L T. ' S - -
J 1.
TMr VALVE OV THE D I S C H A W L i s*.E k' A S 5 4:1T OFF.
9 T97 V A T.U F. L' A S C.of1 TION TAC 77D S40f F0' TMF 591F T 5'JPFE UI 5 0'..
3.
TMr A riEA ' AS ESPPD OFF AND DIM;D AS NECESSARY 10 Ff ' 30 FT.
m Mep D
4.
UE;.IIIFO THAT T9 D I M I N G
'.'O'11.D P.R EC f.11D r.
A V Y '.i A T r '
F-'O
ENTF i I'In f.oMF A'IC41 GAY DIiirCTLY.
h2 5.
100M I ?-
'riilATr 1' A T E'-
AYD SAND S av.21.E S A O T'r C A N IvyMDIAT dB-C t.rA v'IP " Y M1? rt. I N
9 AN D ')\\f r I t.
94v?ty TtE3'li.T3 '. E F.E A V A I TA r t?.
ri.
DECAY I st I T I 41
. A D I O M^.LY315 0F SAvil.rS.
A SPECIAL FRC vr TING 'i A S Mr.f.D k'I TH C093'Ivr.9 S F O '.'E F COV?o'!Y AND PTURTYMCIErSTINAS4C?;nS91FirD AS AV
'N '.t S ' ) A L I"CIDEVT AND I T 'd A 4 DCTE vIYFD THAT 90 RADIGACTIV7 V
amu
)
c LIYP T YF r.D O'/r:i SHOULD
'iESD----
F#C HTel. F0FS IY AMENDEvo.
TMP I YC I DEMT
'.'4 S C A'N Cf.o ;S I FIED ST' A S ^M int tstjh t, IyCInrYT AYD IT U4S DETERv!YrD THAT YO TinDIO4CTIVE voTEPIAL hod 9ECM :VLEASTD FHOV TriE i1 Din %CTIVE Wa3TE SYSTEv N3T P:i UIOUSLY ACCOUYTED FO? AS HAVING 9EFM ErLFASED TO IA ME VICHI GW.
V0d*/ F:'.7Crn*!. irs Avp A;3THon!TY EEEE n.r V I E 'd E D TO ASStiFr TH4T SIk'ILA."
IMCID7Nf5 VOULD NOT OCCIHi IV THE FUTUiir.
O 949E7 IMX PASPD ON
" Y19d 'tr'HICST FROY THE A90VE TFLEPHOV.E CONVr iSATIOY THe r
NrXT HEGtifA FL AMT PRC ver.TINr- '7II.L CON 9IDER Tyr IMCID7MT t"3RE rr!'.1.Y TO DFTFRAINP IF A FOSSinLE VIOLATIO'3 0F TrCM 3FFCS SECTIOY 1.hF MAD OCCf.1 f!':EO.
- n nE iITT i-AL I S A nr3 CC -
HP SF'..rtt.
FVD D91J so,)P tis AEC 4ic-v MAR 1 T4
\\
_