ML19221A563

Summary of Prerequisites,Precautions & Instructions for Shutdown from Hot Standby to Cold Shutdown

ML19221A563
Person / Time
Site:	Crane
Issue date:	03/28/1979
From:	Office of Nuclear Reactor Regulation
To:
References
OLS-790328-1, NUDOCS 7905230199
Download: ML19221A563 (7)

Text

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g ra! -)n - Un i r J Pa::e 1 or 7 y7, f

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n m Po';I:

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A,,,,3 A L To provide t he prerci;uisiten, precaut ions, and f ru.tructium for r. hut dm:n of the unit from hot standby o c ol d :>h u t d a:en.

II.

Pn t:P r.r u_1_E T TI:s.

A.

The plant is in a bot standby condJtion uith the control banks cenpletely inserted and with the shutdotm banks citber inserted or at the fully with-drc:vn peni t Jon.

B.

The reactor coolant temperature is bein;; enintained at the no-load Tavp, (ap;o <o:inntely 54 7* F.) oy danp inn r.t can.

The st eaa ;;cnera t or pressure is being r.aintained at approxinately 2005 psin.

C.

The stcan plant aaxiliary nyntens are in service aa necc::sary to di.<.si at e residual heat.

i D.

The ra ter 3 cvel in tbc stean nencretors in botnn naintained :nnually at s 33 percent.

Tt crieriter is beinp, sup*nlied throus.h the bynaun valves.

I. {*=r

.+2 r.c; in. r::cr..nn ers e

V r

l A.

The reactet coolant :ast he hora ted by at least 300 pp:: bciere hinchinr.,

r:.ferv 4.njertJon and to at Icast the enld shur h:'er hornn ennentrat ten het n c coci do ct Jc Initiated.

Maheap for ceinlant enneentration nurt he j

nt the sanc 'coron cc:neuntration as that required for s hu t d o:in.

B.

The reactor coolant pressure aust be naintair.cd in accordance vith the al lmral.le pres:nure-t enpera ture curve cleria:: r;hu t.'nua.

r C.

The ixn:ir.or cen id cun ra t e for the prear.urh:cr should not exceed 100' r.

per hour ;ind sh ill not c.seced 200* F, per hnur.

Th e-n i n i-. i r.c temperature

~

t ra:it: l e n t:: to the prensurl:.er iluri nq pl ant enoldoun o; era tic.nt. the f olio:cinn proc iutions should he observed eben the p re s s u r i.:c: spray flou is initiated:

1.

The :.;prav chall not lie uned if the tenperature di fierence bettecen the prer.nuri r.cr and ihe spra. fl ujd J - p,reai c - than 320' F.

2.

The ::n.:it :ar" r.n ra. (Ic -.haald be irit:ated r.Inuly by m:mloally inc reanier. the c ha r,; ' nt, lior f i t.u.

t Nk 164 269 5kWa W M.SMA

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ell De nct st ep the. contec l rod d r i ve r.stthSnCv u,c l 9 Fus entri TM ccM cesal;.at t e. ipe ra t ut e if decreased bclsiu Ta 0 f.

'lh6:;t-tanu - h:.u ld r e-in in reivica ar nece-.;ary t o riaint ain te l inr, air d i;.cha rge ire--

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• b col-3B - Unit 1 Par.c 2 of 7 Rev. 2 3..7 J.

III. PimCMITIONS (Cont.)

1. E.

Darine, plant cooldc-:n all s t e m r.cnc rators skultl ha connected to the steam header to arnure a unifn cuolde.;a of the reactor ecolant loops.

q.

l'aintain a : inir.ua of 6 gpn inject f on water ficm to cach reacter coolant p p.

• C.

Solid water operatico:

1.

Do not declate the PHP, inlet line f ron the reactor conlant loop ur.-

lenr. there is n ster. i bubble in the prenr.eriter or the chat:;ing punps are st o;>perl.

This precaution is to asnure there is a relief vo)ve when the reactor coolant systecs is at low prenr.use (less than 500 psi)

~~~

and solid unter.

2.

Uhenever the plant N cn1M er, letd.m Cice ur.t be mintained throul;b the resjdual heat renoval icop vin the lines to the letdev n heat exch.oiner to bypass the norual letdeun orifices and the valve in the bypat:s line should briin the full open position.

3.

If all renet or coniant pur-pr. b e been s topned for r. ore then five Q

ri nu t c.s and the reactor conlant tenperature is greater than tha j

cha. gir.g ad mcal in ',cc tion

-a :ct tcnpcra:ure, da not n t. rt t h:-

first puep uncil a stenta burble ha.= been for: n d in the pressuriner.

This precaution will nin!nize the orcoa :re trancient when the first pump fr, utarte.d and the cold water previon :J y inject ed b.

the cha rr.in;;

purps is e!rculated through the warr.er reactor coolant gen,cocuts.

The stea.4 bubbic wi.1 accc n.edate the renultant expansion as the cold water in rapidly s;ntned.

4.

If all reactnr coolant punp: are stcpped and the reactor coolant is beinr, coolinr. dc4m by the r: sidual heat e xch a ns.c rc, a nen-uniforn tenper.s ure dint ribution nay occur in the re:.ctor enolant r.y s t e n.

Do not.v i er. p t.

En : r.ir t a reactor ecolant pump un3cor. r 2 tent.i hubblq ex ; >: tn in the presnoriacr.

5.

When the react or conlant p.

m,ut e is bei n:- ria in: ai ned bv rhe Jou pres-sure let.hwra conrrol valve, channes to the fic.u rate throu.:b the reni shial heat renov.il loop be sin ot tiine of val ues

<>r n rart in;. aint stoppinr. the rer:1doal beat rcr:nr.il puny u l l - re<:ul t in ch:nr.cs to the r.::ir : or rool. int prt m:re.

Ksr esanid.

or i ny. of t h.

renidaal heat reunral j.unpr. r.v caer.e an incre:

.c in the reactor enolant toes-nure of 1,..tuceu 1 014 :uid 13t) p::ir.

6.

Whentver the re netor conlan: terp.ratuic 1.< :. hove 160* F.

at Icast 1

4 2,70 one reacror enolant pu: m riu :t he in op. r a.t i on.

a c

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GOI-3 " - Un[t 1 i

par,e 3 of 7 Fa. 2

-D Date i

-I V

.V.

_I_:: S T.R.U._C_T_I O_'_l_S Na rr.:

Pc;forn SI-38

(.T..u t d esin :' : n I n Calca briens) as required during cooldatas.

A.

1.

_ If the rcactor e-- b c q<ren is to be crened, Init ia te

~

de;;au r.i nr, o f t he :m -.;; r solaa-per S0!-62.3, reactor coolant che.istry.zGIttb and cont rol to r.ce: the re.uire-rents of SI-511.

2.

Fmrate the reactor e chn: r.y r, t ma to retintain sic:tdown r o r;;in per SI-38.

%d r.;; hara t i nn, e n e r g i:< c the prest;-

urizer backup heaters to open (Le sprayr., al3ctrinr, boron equalf ration bet rec. the loops cnd the precsurizer.

Enc rr,I ni n;. the heatero en open the sprayc vill naintain the reactor coolant p re:2.c u r e.

3.

Sanple' the reactor coolant neriodically to ensure de,1:ssing I

and borat3cn have been properly accouplished.

4.

__ M t er lora tion is canplete, and horon concentration in the c reactor coolant op.te. snd pressurizer rc vithin 50 ppn,

.r3

• .'oencrcize the pret:;uri zer hes.tc rs.

__a s

a V

S.

Trannf er rea. r nr coolant rn. u n conrrni rn notcna ri e. per S0 -62.0, Doron Cenecntration Control.

6.

Slo IV increase the rate of stenn dono te estnb1f uh toca da ai ra te.

'!cnitor couldoun rate and maintain at approxt: :tely 30' F. per haar.

7

_ Perforn SI-(Cooldo-:n P,atc) as required durina cooldern.

S.

,_ Uhen Ta r. has been re,f uced to Y.0* r. and the reae. tor ecolcnt has been hora ted by at least 3G0 ppo, perform the f ollournr,:

a.

_ _ Uloch the high st car.: flou saf ety Inject ion signal by r~ eci..rily plac in:- 1;S-43-235.1 and ii in "n!.0CE" po::i t i on.

Verify bloched b:' observin;, pernis sive and s: a n:t panel, place bo:-b ; t c.:-

duap i nt e-l oci; sel ect or m i tchen b.

_ 15-3-3 0 la and n in t ne iwp.r : rosItloa nn.entarliy ana cen a r.m.

,,.o i. m.um.

164 27I

Oli..

1 bese bl e. ! -

.oit o: :tically reset a'ove 5.'. 0

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Ihr.TF L'CTWS (Co n t. )

p.s t e If 7:re I'.sn two rc:e.nt e.cu 12 n t p;:ps.,rc r uo r t r e.. rehre A.

9.

d.t vi.d st o f rc.4 r.g ; r et nr c r o!,,e 7,cp a s ne'c' 9.~ n.

?_7 1 or 7 -:st r e..2 f n in nrvice to provide fer pr m -

ut ir er a;,r ay, i 'M:

If the tt per Ar are dific:rence be twen I r,.p ixresses

..u c, start M d it ten al reac t.,r c or :-t ta l 'e ' F.

ur

., i n t a in the pur p s pe r Sr.I M. 2, 2.s r e z e e a ry t o tv peratur, dif f ere.re less than 25" F.

10 Tr a c.Mer the ;.r t s sur int sgr.y ecr treller to inual and n adu2117 cpen the spr.iy ni;es to start reactor ecolant systes pres ere reduction. Caref ully emnitor re ac t or coelsnt pressere and te perature and ccnfer.m to the bestup-c celdcvn linitattens.

cut,e Sequcyah ibit 1 RCS pressure-te.-perature Ov. I C'4 ihi.tair. a cIrd u uf f, g :s i n j e c t ic.r. we. t cr fl o'.c t o e a ch recu er c ec-I nt p.='.; by a d j us ti n g FC'-O-G.

11.

As t w3 J~ a pr e ricucs 2.' $ us t chntginr. flew to F.r a d us uy As incu rat I reuuriter *,evel in spr.rext :.tely 70 percent.

2 crc 3 33 Incr.ea<ed, yr,:-turizer heaters ay be used en e ns u r e unlicrn te=,wrecure In the pre srtrr i ser.

.m

.- ^s

,'; _ -- \\

h3TCt inernsed ch:,::.ir,z (Irv r.sy exceed the total of let-(tj devn ficv and

'. cup flev causing reduced volu-e cen-trol tank level. Ir:rea s e ru'r.c up fim as neces: art by 7,oing to " rusl" skeup per boren concentraticn control, S0!-62.2.

Wen reactor coolant p~.5 ur e h:s b e en red u c e d to 19M psig, i

12.

_ perfer-s the follevirrt:

a.

Man : ally hir-ck the Iw preuur.

.T pressure-pressuri et It, c l -. In. i.. }- c r i s- :ip -I h7

crentardy piacing E5-6?r-136A and B in the

B LOCKC/* Mai t irm.

Verffy blocked by che-erv!nc pernin dva snd sistus panel.

NOTI'.:

This signal cutu acically reset at 1925 p=ig, if rescror ccolant pres =ure gon st r.. e t h i n T.re s s u r e a f t e r t h e sirnal is blor.kcd it rust be reblocked below this p re s t :re.

45.

T a r bre E pe,. arcu ulators et 19 25 ps i r, by < k s ice sed im rdn1 the f o11cuin g:

\\64 27ny pn,w;.y;9 L

m n.w-n Acm$ W"b.

m wx-n 2ca m

ras.2-n

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ty.

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_ k%a e.t <ul le a o r f cn

,y r, se tor..e.g.,,e p :., - e a 1 h:ms s A.

J3.

t o 1 gg c; f a c t or can1 t. n t

.r e ? u r e* is t d' c e d t o 1 710 r a f;l, cr cn Z. e reict or c:c1L.nt ;~a. g.eal hp ns vain G Z-62-SD.

h 14.

' *aea t e x t or t r a

,t p r e.. n r e '. w t < ! wd t o

• I! ~"'I T s i c. -;' ' M t h e a c c t.7.Aator. - cl a t i cc, v 3.1v e <, r:e r ie p c - e r

n..d tag.

_ o an rilitbnsi icchn trifice.a' m.ss r.recssary e n ut nin 15.

r 1eri.-n fice ri:e.

r.3 nat #sece.i 1:0 pa fi:v.

Ce.t'.r e the teeldm.m by ra r!Mic.tlly ad h t t int :he s c e:- 2.: ;5, t

16 t--pre :%re r eht ic. shin rar z204-M. sir.:lin th= er oper te.-- e r 212:

deva. arve UCS pre. r.ure and t eq :::,:en li:ait.u f ens).

17.

k? en Tcvg is h:s cen 't.G* and 1.25*

F.,

v e re."- the t ur bi nc-dr is en C en WJ typs ss val ve LC'.'-2-4 fe edvs:cr p.=p f r c-a service..

3 4:xi r3r..ae suction valven FC'l-2-221 c.nd FC/-2-224.

I'h e c c r.3 en-

.u te te re: rr pay n r.-4 m ' n sc ry Ic e to ice d : b e s t e u r,r cera r n r %

TM r., atic-38 tihen remetn ccolant premre ha m b e c-n r e du c ed t o I GG

si premre ac !.00 re.ix by ceducing, prcssurizer spray or curr.-

ins on gre:*erizot hu t_: %

19.

_ %*nen t eactor cochnt it r e : s tu r e < 3 50

• r., l ecicu t.s nd ins i p S I p~,..

- lr ;

(,.j k/

,ipT Cyea er/ reck out 1.?-kV breder for IA-A sf aty f cietilr:

3 1.

y;. p 2 4 the wi rb 'r rM r e: f e t.

2.

7tx 70 pr- ? I A-A ccatrel :;vitch et 1-M-6 4 th he1d cri.r.

(,.'7-k /

l 3.

Ognar.d rs.1 cut t.MY h e d e r f er 1r,-R re. 'e ty i ',< :!:=

purp end tag with hold ordcr.

12-5 ccr.:rel wit ch on 1-t'-6 with hold tne r.

4 Tv. SI, : ;t

~

20

_ 7erifv cicyed TC*l-G E is,2 Tr.X-X-11 (RHr. supr.ly t o ST. arf chscr,b*r, 7.mps s u c t i c-r.) ud t a r, i n e l e m e d p o s i t i on.

21.

_ 'acs iractor toolant te perature hss t.cca reduced belev J.50' F.

snd pres =ure is Fe:.rren 1.00 cad 425 psig, place the restaud bcat tewv.s 2 sys t en 17. wre tc.c r e r 50 7-74. l A..

decre.wes t o 125 rsig. cren 22.

_ k~ hen s:enn seal supply pres *ure

!.cader nr.d clon ec, el m1 sgply f ren auxiliar-r eter t s t ca-:

sea: a seal. supply isolc.rion vr.1-e 2nd b; mans esive if open.

fu t c:.- < d M.

23.

_ S :e cecienr.cr circiQac'tr.r. v.scer tv pn Msunt o ln a --inir.uc of 6 wpr. in jec t iren v1t er fles.r CMITIM:

t r, e a ch r ea c t ne cc ehn t pu.m by e d b = t i nr, F'E-Of-M

.ah11e chanrjnt th;a r.ing flet.~.

l e v e l t o a p r. roxi.a t ely M p - r c eL. Msy t'h W

False the prcssuri n:r 24.

g 4cl r e d u c i q, FJi?, J o r d c.m f icv.

inew.s tra charging fi{h. [p%p (D m' ; 13 -; p d,',f.t3-D '. H q( ' {

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Page 6 o f 7 Rev. 0 Date i@

W.3

, G IV.

T US TP.U CTIO"S (Cont.)

A.

75.

'.~ e Tava is Mu th :n 2cG' r.,

fill the stenn sencrators to.the 100 perte x hvel (vet I n,ce p).

the conde ns er' va cu ro bre:Ler, 26.

S cp the stecn dun.cs, open

-tcp' the cc nd : ser air :mmt pu.pc;, an d t u rn to e f f NSition on the one that vcs en auto.

27.

_ O en vacuu: reach: s cero, isolate s te.u seal supply f rcs curiliary sten: haler and stop gland secaa est::stcrt.

78.

_ 'Ihc re aining cord,_nsatc punp and condensate herster,cucp t

eay be recoved f rc.c se:eice and the autostart selector I

placed in the "0FF" positien for condensate beester and heater drain put ys af ter fil_ ling the stean generators.

t 29.

-he recaining condenser circulating water pu=p =2y be stcpped if desired.

(assure rav vater purp suction.)

30.

_ _ Verify shutden nargin using control rod position and i

boren concentration upon achieving the cold shutdeuw condition and cace par shif; v' nile in cold shutde en ccedition per SI-10, A.l.

q p.,.

'e 31.

Fi'.1 the pressurf mer by:

Increase the charging flev rate to cause the nier level 8

a.

)

in the pressuri:ct to rise.

b.

_ Y.aint. sin the RCS pressure at 400-425 psig i.ry 2rx111y

. adjusting prnsuri er spr.ry controls FIG',-aCS and/or FIC-6S-3?CC.

_ &n the pressurd2er Icvel 2prrosches the.grry r. : ale, l

[N c.

~

the spray vill lose 1.ts ef f ectiveness.

Oc. test precsure by adjusting charging flev as the bubble is collapsed.

9 i

As the RCS beco=es solid, pressure control vill CAUTIO'i:

beccae core sensitire.

F_xcrcise tsutice. to cen-i trol pressure to 4CO-425 psig.

l

[

d.

'n' hen the pressurizer is filled, adjust letde;n presture

( ~

centro 11er F.IC-62-81A to ec.intain RCS pressure 400-425 rsiI

_ Cpen prenszeirce s.t rays. PIC-6S-3403 a.nd FIC-6S-340D to e.

.aintain c37ec12 tion through the pressurizer during cen-

,m.

Y tinued cooldc a.

~. T,

{g_- f3 1

32.

_ The n, alcing rs::ter coolant purps : ay be stopped.: hen RCS D-tq ature has be-6 reduce ' to < 16 0

• F. a s 1,dicat r d rsn ~'"r.

FI. islet TR-R-M and TF.-74-25, Use auxilisry sceay line L ' ~ >

vntil the pressurizer te perature h2s 1-en reduced to 150* F.

l

-n-

f M-M l L :it 1 Page 2 of 7 F.ev. 3 m

r -ra g.-,

. ate

%y IV.

DHTF.t-TIONS (Cent.)

'T;,en all F.cr's h:ve de ~n, t c7,ird, 3.Cr% No I seal cr is A.

31, ra irinne r r. edW. c.dj e =c Iet. Ann pr e e.ure controller, HIC-M -El.A to reduce re er t nr ec:1 -nt pie.s ute t o a mir ir.tt of 50 rafn.

% Con:inue cc:id ~.a of pr es = urf rer by ir.it i:.t trg r.,iliary : -r. y s f c13 cvs t a.

_ Verif y det c7 !.etecer. the pre:Suri. er

(~. -f E-3 24) aM ch arsir$ fic.i (7!-C-37) t r. le u than 320' F.

5 T obe t ch rging hev to n!rfnfre p=7 Speed or ecxival(nr.

3 2 y,7 n, if w ing earf.cg v ha TC C-M- 93.

Ope n auxiliary >;:r s.y vel ve r;'.'-62-8 f..

c.

d.

Cirse ramal charging valve TCV-M-85 Verife a l t e r r.a t e cM rs t re ve.1ve P. 7-M-55 is clo< e f.

e.

Adj e nt chs rp,in;; flev : c c,h t r.in d e n tr ed c c el d e n ra t e en p re s. s ur i z e r, C ALTION: Oc ter a cc e d a r e t e rd 1GD' r. p e r h eur.

C. n w:. -:

Qi9 35.

V. ie n th e pr e s r ur i z er c.-o !d.~.n i s e n :ple te, close t he r.u=111arv s r.ra y J f r e J r n} r t f : n vs 1 ve.,nd c;, e n t h r-ch a r r.i ng ficv path.

!O'rT.:

If '.he reacter conlant sy*.tr is not to be cpt ned and rentto coole nt c!canut is require 1, the pmitive dis-pl a c c :r::t chr.r;;Ird; pur p r.d MP. Ic t de.cn vr.1ve FCV 63 my 1,e us ed.

The prer.auce cay de e.dj us t e d t e a r e r cx-f r_ste ly 50 p s ip te l r.c pt=.p s7 e ed a-d PC'.'-fa -81 t o c e t derired flev rue for clor.v3.

36.

Af ter the reactor rnriant pu--as have been renoved f r r- ~ s e rv i c e cod e reactor cc.3?r.nt t r :r e r..t ur e o f I I. D

• r. (as in.li c e.t ed by the residwil heat rer: vs3 t erreratur e recorderi har 'ecen t e r.ch st, o r.c r e s ' ^ ^ '-n s c-.v. 31 12.np r.:y h e r a r-r.v e d lio=

s.crvice per SGI-74.13.

37.

If the rer.c t or cool ant eraten it to be draine o, f r.31r. SGI-68.3 C, " Draining the 7.cactor Ce ninnt Sy r. t cr.. "

- 1 (--

rif :

w.wm: m: s==m.w.m.e.m.m.

n.m. w.w 3.,.,,.. _._..

mp 5 e....,m. f.

. ;#.y.

W L

rr i o u wR w yb'N=' m,2J5 c

{Q )

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