ML20107B471
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s January 10, 1973 Df. rector, Diractorate of Licensing-L'S/J:C tiochington, D.C.
20515 Dochet 11 umber 50-293 Licanse TAR-35. /.conhent lio _ l.
Abnorm) 0:curroaco AO-72-1_9_ -
In accordanco ef.th Pilgrim nucicar Potter Station Technical Cpocification G.G.A.3, va hereby report on t.baarmal Occurrence AO-72-19 Vaich eccurrcJ or.
Deceber 3;), -1072.
.S_u.:n.r...z' cd Oc~ ~renc a Da Deco. %r 33.107? th!.13 tha reacter uns in hat cer;;Sr conditke, t:.9 BCIC cyntaa Ice. ? r,. p:. 0.e c.'t a rauait of 1cw oi *:CIC t _..f.no of.1 p;c3arre.
T.m POIO c;.s.:;, c: i. racit.: :.a the tes: uaio to :aiat in tuta.ii.ht h:2 c
'i; a R CI 3 ::.i L.
bec,
cten*,y c.r i~...a.:.-
m :' :...: 0.c ver.t cre;.ec.
uc.::a h.r :.c e;' 0 a s:: : *tt.arr.ca prior to c':s cc.e".rres.ca, th::ai.re v.m,n M:n f.asporc rfli y.:.'. tb T.UIC../ t0 a,. 011 centrol redo rc to U1 cet.:s c. ' :: Met a i
of race:te.7 1 rc::r,ar. twer. W tig van i.nitint:9 in r:c ;rdt.m rich '/.--hal.;:.1 3; acific,.tice :t.f.L.3.
'i'..e F.IC1 ayate:t wa reti:rcad to o;,crdno acc.u c:2c.u.:
toe,hearc n @ tho 0110 * ;::P.c !.recua insp0rcilo ca3 th: P.CIC f:yste: vr.:
ra;.s;.rs.'.... a r..tt rc.4.cn t.;.sr... v L : tu.i ti;oin t.n. rte:.a irr 20 c. cot t..a UC L"dTCGe;.e 7.:.~.,:. M.. 1.t..a_ C a.m.. t.o.v ? _:M.'.:i v.
h ;%M.%a i r. tre s..'. to u:rn ' crc f a i:S *. t];fva t:ah c 2 tPo t.unf
- 1, r.n eni Vcr.O : :
Gr'~;ca t>i)..>. T: a :3 ::aur.1 L: a vcpla*.. A, clo:-raan:
ci) ryc:c.: e t c....
) c.d refill ;d with c.ev oil.
T..a r.C:.0 cyst /a rea t...:.
w a-cc an.dly face: ten.'.ly c:.s.:cd ta cen; ire opra'aility.
.S.oN...w....e.n..t T..r re_ n ti a.t.f r n. o n".d C.r.v..e.e.t f.vn Ac.t_O;n, Ta f tr/cttiento the ronce.n for tha vearin : of tl.2 T..CIC r.il puc. driva tr".:
- r. ears, tha vr.dar, T.~/ Tar..ir 3, uan et.n: accel :..i cr..cf.ca n m:c.:.ti.. n tr.n t 9 rzij.f.:upn-eter.1 t:c m retuc.nd titiur tha df.rr:ti.a ci ti.cir re -
toti.n. Iaa 1:.P cot.ien of c5:a d t;/tc trc.in S::: cice;;ccua and
.r.>"
1n:h. did not r:/, cal cn/ csaau..? ti.o vorn !.. r).
I r.a....r. ret.m:Ts.nat::.~ ta nylo 6f the tarhine c'0adt on i1.ith the dr've rar is t.M 1:25 tic.it:
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- catf.3 're"c rj r.ii< n..:r.t c. 2 e tr&'..tnses d tha c- !."-
"'.: :t. T w.. ra rea c.a f ar t:1 v.
a ': ::n cou.k. ca as;er.r nne, taa c-~a u:.n L?.
l cu n nachly b. ia caer ti.O /.a uport. tic:. tu f.1 10 h... re open.t.l.m u.
in a:hiute.d to dator::
.n 12 cucenoivo enn ver: !.c tc:17ti.n'.
1' 9604160351 960213 PDR FOIA DEKOK95-258 PDR
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LILUlla
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e During operational tests of the RCIC system on January 8, a resistor burned out in the flou cinnal converter beecuse of an accidental ground that occurred while electrical r:casurecients were bain tchen coupled with excessive current fro:2 m high cotting on the test modo flow control potentio:neter. This failure caused the RCIC turhino rovernor control cyste:s to becoce inoperable. A now
- Tov sig-nal convertor uns obtsin2d fro 3 the vendor and inatalled. Ox Jatraary 10, the syste: tras catiofactority funettons11y tested and returned to operable status.
Tha technician tho vas taking tho electrical naasurements then tho accidental ground occurred has bonn reinstructed in the proper procedure end care required t:5110 applyt :a test ir.striennto. In cddition, procedural controlo voro imple-taonted to prevent exce:cively his's cattinEs on the test taade flou control potentiocotor for both the LCIC and RPCI systcas since these systems have si:silar circuits.
Docause the ECIC cyotes vcs inoperable from the flon eignal converter failure, en operation 91 curvo111cace test van run on the HPCI oystes on January 9.
Durin.", the perfortsuce of this tect, a r;ssket failed on the cland seal oten:a c:tauctor unit. Zie c:cket was repleced end the cyste:s catisfactorily to cod trithin cicht heurs frca ths ci-a of casket failuro. The bloun Ecoket resulted froa above noms 1 preocurco (200 pct va.150 poi rated prescuro) oa the cool-ent trator cido of the g1:ed soal ctem e:6suster during the occrcing of the CPCI cyctem. Tao bacie cause of the chovo nor; 21 precours c:n olev responce of proc uro control vaivo 2331-40 t/aich reduce 3 the cooling vater cupply to the fland coal. ote:=i c:u:astor frea 2CJ poi to : bout 65 poi. 7ac proc::ure control valvo tco 11_5ced to un o;cain; of 574 ni ctroke chich is cecept:ble for all cades 01 cr.oracica and ccntrolhr adj;ct= ento ucro made for cuicher renponoa of ths valvo un the initini etcrt of 1.ho Ir?CI cystea. The cyste:2 van ete::::sf.:ll/ ctcr:c 1 tv: tian after the re0ponso ti;;c cdju:t:acnto voro r:nde with tw irrther cc nct probic is.
1*as invectication cico revcaicd tha cims rc0 pence proLica of tha prcac no contret 'talve van coccatus:cd by ca ovce-cized tria in tha v..1ve.
L a tria is rat 1 for 4 M cca in ecc m ence uith the crirfaal cpecification, haxvar, ti!c trus flow requirouc t 19 70 Ot.a.
i!w tria hr.n baca crdsrei fraa the valvo vendor cc.1 uill be ist:11c.!
i then rocci n. Gin cd?.itional corrcet:ivo c:c.on vill fir ther reduce the pro-bcbility el Lland ceci ctoc 2 c:ficuator cachot failures in the f=ure.
i Ecepcetfully cubnitted,
.(~.h.
- n. C.1:tynas Pilcri1 Livicion Ucad Stecu operacions Dapartcaat Courte9y Copy to:
Director, Dire:terste of Replatory Operations Txion I Livicien of Cocalicnco UJAEC 1
073 Iccad Stroot Ucuarh, how Jersey 07102 i
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