05000322/LER-1986-007, :on 860212,split of Reactor Bldg Closed Loop Cooling Water (RBCLCW) Into Accident Configuration Occurred Due to lo-lo RBCLCW Head Tank a Level.Caused by Inadequate Station Procedure for Filling Hxs.Procedure Being Revised

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:on 860212,split of Reactor Bldg Closed Loop Cooling Water (RBCLCW) Into Accident Configuration Occurred Due to lo-lo RBCLCW Head Tank a Level.Caused by Inadequate Station Procedure for Filling Hxs.Procedure Being Revised
ML20141N948
Person / Time
Site: Shoreham File:Long Island Lighting Company icon.png
Issue date: 03/14/1986
From: Grunseich R
LONG ISLAND LIGHTING CO.
To:
Shared Package
ML20141N947 List:
References
LER-86-007, LER-86-7, NUDOCS 8603180330
Download: ML20141N948 (2)
v • d • e


LER-1986-007, on 860212,split of Reactor Bldg Closed Loop Cooling Water (RBCLCW) Into Accident Configuration Occurred Due to lo-lo RBCLCW Head Tank a Level.Caused by Inadequate Station Procedure for Filling Hxs.Procedure Being Revised
Event date:
Report date:
3221986007R00 - NRC Website
v • d • e

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.= n Shoreham Nuclear Power Station Unit #1 oisloloIo131212 1 lor l0l2 vita RBCLCW Split Due to a low "A" Head Tank Level e ve=, o.,e...

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O ri February 14.'.

1906 at 0320 a nullt or the Reactor buildiriu Cionnd Loop Cca l i vin Water (RDCLCW) i rit u itu a cc i nor,t c ori f i n u r n t t ori occurred cue to a low low AbCLCW "h"

Hoad l a rip Level.

The c l a rit Waq i ri Onvr at ivria l Cr r.d i t t on L wit h the r iM o nwiten f re G5utdowre for a r. o u t i ra n a rid all roJn t rit o r t ed in tho I

corn.

An Fa u x pmerit O o,> r.a t or (EN wau pl ar i ren tho "G" Cool Pi.. o l Con 11riu Water beat C x t.ho r n r c in not l ov up, when the W'

PiCLEW l

h e a ti t a re level decenanod holow ttie

  • .o t n o i n t o for ei tytten nellt.

The low lovel clarm did rot a nre trac t at e a t: d han s t ra:o b r.o n rouaired.

Btatirn proceduen T3.110.01, RDCLCW Gv ;t en Unora t teri, d i c' iet adequatoly athir evm tho r ea u i e ntr+nt u f r.r f t 11 A rtte the hont e s,r h a ri n e r n

.i nd w111 be rWicod to t ric i ud a the rio' e ma r v ut905 *o

') t 'P V o rs t tfM i,t r r' t e r d : ( ! Of th t *; fry (a nt.

U } ar,( P,a fi a q P U'u n t 4 Jab re: ? j f i g.r1 of the ovarit.uid the N7C w..is rmit t f i nd at 17.3/ per 10 C F R 'i.^. 7 J.

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, p g*c l e le l 3l 2 l 2 Shoreham Nuclear Power Station l' nit #1 0l0 0l 2 or 0l2 01017 816 te ee m., n, On February la, 19ec at NG, a unlit of the Reactor Du11dino Cloned Looo Coolina Water (RDCLCW) inte its accident configuration occurred due to low low R L4CLCW "A"

Head Tank Level.

The olant wan in Operational Condition 5 with the modo twitch in Shutdown for an outate and all rodu inuorted in the cc.re.

An Ec.u t pment Courator (EO) was i nnt roct od by tho Watch Enoinoor t

to olace the "A"

Fuel pool Cooling Water (FPCW) Heat Exchancer in wot layun (the heat egenanger in normally out of servict' throunh

[

the first refueling outaqo).

lho FPCW heat exchancmr take".

nuction from the Reactor buildino Clound Lnoo Cooline Water (RDCLCW) Head Tank.

Takinq <snecial preenut iorm to ulnw1v fill up the heat exchangrer, the CO firnt cloned the vont F a crain valvs-On the heat oxchancer and therhoo the outlet valv' uhut.

Ho then croched opon the inlut valvo (acuron. 1/4 to 1/i; d a turn) until he felt flow throuuh the 1 a no.

H'* then ooeneJ the valvo to cocrouirnately half opon over a ton to fiftenn ra i nu t o curlod.

During thta

tino, the lusol in the 40CLCW "n ' Head Tardi wau i

decreaning t,o l c w the lovN of the netooints for a

low lovel i

a ', a r n,

  • ,u t the alaro did not a nnur,c l a t e.

The invol drorpod tr

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the Low Lnw Lovel entooint and at OW8 the %CLCW nyt, ten unlit into it; arrident confluuratten

( "W v. i th ).

The nyt t ern tr.olatou into two nuparato, i nd e oe nt% nt 1< oos by a u t eala t s c a l l y c l os i n o t h n header croneconnect valveu on t *1 e tiutti.n and dir>rharne headtra of the NDCLCW Heat Eechannero and pumps on tho "F

s t dn.

I Thn inlot line to the hnnt um:bancer tu a four anch Itna anc the head tank in t><+ t n r; fod t h orair:h a two inch wator lino.

Therefore, i

1 water wn',

heAno taken out of the h"ad t a n te f a t t i., - th n it was bein; realmend.

Onorowtmately t#o minutc%

ofter the HICLCW i

uplit, the hund t a nt' lovel retorrud to nor a 1

.4 id the

%CL EW ny n t orn wem r o t u r nettj tu i t t.

notr..al conf 1queatton orior tti the event.

l Thorn we no unrety *ar.nir a r a r.c o ta thn event.

Thp RDCLCW e v t. t o r i oonrated an don i r no tt.

Corrators corried out all ronetrud Ac t lu fsM.

No ECC

% V ati t, f s )". wort

  • cilalletrt0(*(' Or T Pq t d ) T t/d f G 7" (l ef i

ovont.

Plant Mano t orremt was not.tttod of the uvent and tho NT4 was n e t t t t en t at I?3A onc ! D f60. 7P.

Thore et no out hod to f111 the FTCW neat roachanopr.1 Adentifind in Gt at ion pracocturo GP IJ.110. V l,

RBCLJW Uyrtem C:.er a t ion.

O orocorhire chance h.n boon initintod tn i nc l ud s.

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Mc rniger han d i r r, t r t' that a r o,. tJ W hn per f es r re ed of all M itton Pr ocodoret uund for tho s o-n t 4 n t,

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