ML20085A509

Forwards Results of Procedure Review by Nuclear Svc for Interaction W/B&W Supplied Equipment & Sys.Comments on Pressurizer Sys Failures Encl

ML20085A509
Person / Time
Site:	Crane
Issue date:	02/20/1974
From:	Schieck G BABCOCK & WILCOX CO.
To:	Phinney J BABCOCK & WILCOX CO.
References
TASK-*, TASK-02, TASK-2, TASK-GB 12K, GPU-0405, GPU-405, NUDOCS 8307060546
Download: ML20085A509 (15)

Text

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THE Bl.BCOCK 5 tilLCOX COMPANY J

1 POAR GE!iERIJ10ll GROUP '

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-l' J. D. THI53EY - SITE.C?IRATICES MKII.CER

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Fro:a "C.* C. SCIECE '.- TI3T PF.OGP!& SUPERVISOR.... (2k$6}-.

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IEVII:t C7 ':"cE-1 PROCEDU".ES -

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Enclosed ere the followi=g DE-1 procecures:s-hich have been reviewed by

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Euclear Service.

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a..

d.'.b EP 1202 C6 Loss of RC/RC3 Fressu:?e -

h.kj.

~

E.k '

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..3 OP-llc 2-cl-Plant Eea'up to 525'?

C.

IP 1202 02-Statics 31ackout & 312chout With Loss'

$-7

.' of Both Diesel Generators Y

vf -

g

-CP 1103'C2 Fill.and Vent of RC. System M

Secondary Plant and Auxiliary Systems.: :crI CP 1105 11~ Ua:1 ear Service River Unter Sys, ten CP 1104 30

'OP 1105 02 Reactor Prctection Systen C?_11_C k Main Stean Systes G ?_1202 2 Pressurizer Systen Failure

{

OP 1105 09 Cc= trol 7.ca Drive Systen CNllC-li-Drai=ing and N2 41 = 1-< ting of RC Systen.

[

OP 1102 42 Flar.t, Startup

'these have been reviewed for interactics with 2W supplied equipeent and

)

Con =ents relative to systes protection or preferred method of syste=s.

operstlen hsve been included. Ec co=sents ccacerning for=at, gra==ar, super-finous info.=stics or convenience have bee = made. ':hese reviews reflect current operatir.g philosc,hy and requirc=ents, but of course, not any conver-i saticss or infor=ation passed infocusily between BW site personnel end the

'a~nere applicehle, compliacce'vith 3W draft procedures has been

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2-29.E-1.2 - Loss of pressurizer level vil1 cause. lockout of pressur'izer heaters,.

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. but is not a symptes of heater failure., '

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29'.?.3.2 - It should be noted 'that w f.er pressurizer level is 'not te=perature e;'

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. THREE MILE lSLAND NUCLEAR STATION C.

.p UNIT f #1 EMERGEi!CY', PROCEDURE 1202-29'

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PRESSURIZER.5YSTE!! FAILURE

' W

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Table of Effective Pages';.' ~

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'Paoe Date R ew'nion Paoe -

Date_

,Rev'rsion Pane-

' Date Revision l

s

'i

' 26.0

~

'52.0

~ '

f

.- {,tj '03/06/74 51.0 ' '

2.0 03/06/74 1

"2 7.0 -

V -

3.0 03/06/74

.1 1

,:. 53.0 ;

. 28.0 '

5,o.03/06/74 1

29.0 I-

'54.0 7

d i.r,0-03/06/74 30.0

/

' 55.0

• i 1

~

i

. 6.0 03/06/74 1'

31.0' c'

~

~

56.0 7,0 03/06/74 1

32.0' 57.0

I 8.0 06/02/75 2

33.0' 58.0'

^

3-9.0 06/02/75 2'

. 34.0 59.0

' S V 10.0 35.0 60.0

~

61.0 7-,. 05 11.0 36.0

.Z 12.0

• 37.0. -

• '62.0 63.0

-'ch 13.0 38.0

64.0

-7 14.0

' 39.0~

65.0 5 40.0

j 15.0 41.0 66.0 1 G.0 -

67.0 17.0 42.0 18.0 43.0-68.0

-9 19.0 44.0 69.0 70.0 45.0 20.0' 46.0 71.0 a

21.0 27.0 47.0 72.0 h

73.0 48.0 73.0 4.0 49.0 74.0-E;.

25.0 50.0 75.0

"=

.~-

l 9

l Unit 1 Staff R pprotel Unit 2' Staff Reco ' rne s

ve*

(

l Date Approval i

Date Approval Cogn[tantQeft head Cogdizant$ send 1

Unit 1 PORC Recommends Approval Unit 2 PORC orntnords preval i

Dbn l-..i Date :~ ll-3 **

Date Casiren fPCRC Chairmeeof PQRC l

PORC comments of incfuded PORC comrneots o.

1 included

( ate) }

(detal I. Date Date By I

(

By 1

l Approval

(* -[-

Date A-Z-Y stireensuperinterne'nti

• -**'^ "*

Unit superinte :;eist i

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.THRET. HILT. IS ND NUCLEAR STATIC % U::IT 1 gr

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. ' Plant Emergency Procedurei h

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'EP 1202 ~ 29. Pressurizer Syste:n railure

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.y Relief Yalve RC-7.v2 1

. SICTIC:t A ' Leakind Pilot Oserated -(electmaatic)

)

. 9. '4 29.A.1 -.

'. Symptoms-

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/ Relief.valvo dischrrge line temperature exceeding the'.

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nczmal 120 T. ' Alams on computer at 200 T'..

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....,1

'RC drain tank te=perature/ pressure. above nor=al on 2.

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.the control twom radioactive valste panel. (pressure -

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alam at l'.5-2.0 psig.)

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Rc system makeup flow above normal for the variable let down

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flow and RC pump seal in leakage. conditlocs.

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i 29.A.2 Izz:nediate Actions.

A 1

L. <

1 A

A.

Automatic Actions l-i.

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2 1.

None

.=rm...

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B.

Manual Actions y

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Close the electromatic relief BLOCK Valve,'RC-V2 29.A.3 rollow-Up Actien f

+.

l 1.

Repair during next shutdown

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Inoperative Pilot operated (electror.st'ic) Relief Valve, RC-RV2 I..

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.., 2 3. B.'l.

'Synotoes 2.4, 1.-

FC System pressure. ls.abov'e 2,255 psig and RC-R.Y2 fails to i [

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b, k,

,s c

g

.open.

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t 2

ij.

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'.:d,.i a

2.. ;RC Systen pressure is below 2205 psig and valve. fails to close F.

'~

c is above'the'20'O T'alaru.,-

' ~ 3;. RC-Rv2. discharge'.line ten:peratum..

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The RC;dr'alin' tank. temperature /passure 5 above anblent as '

.h...

[

indicated on the control roo:n radioactive waste panel.

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! I 29.B.2' Incediate' Action 4

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' Automatic' Action.*

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1 1.

for a failed. closed RC-RV2:

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Spray valve RC-V1 is open above 2205 psig

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Reactor trip' occurs at'2355 psig I..

b.

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.Pressurizar code relief valves open at 28635 psig

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2.

For a failed open RC-RV-2:

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P.

a.

All pressurizer heater basks on full below 2105 psig i

2 b.

Pmactor trips at 1800 psig ll-High ' Pressure Injection is actuated at 1500 psig

[

c.

y 9

1 B.

Mammal Action J

1.

For a failed closed RC-RV2:

.r shift spray valve RC-V1 switch on center console to

(

2 L

MANUAL and open further for additional spray flow.

1 2.

For a failed open RC-Rv2:

e close RC-V2 block valve.

(

)-

29.B.3 Tollow-up Action

~

1.

Return systes pressure and temperature to normal.

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.- 7,7 :

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~. Leaking Code Relief Valve, RC-RVTA c::=' ?C-P7IS -

~ ' i SECTID'I C 3

~(

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29.C.1 Sy=oto:ns l?.

'1.

Code relief valve dis' charge 'line temperature, (s) exc.eeding

-'.s:

. (Computer alarms at.200 T)f*. '

)

the ' oeputer dor. sal'120' T' i

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5 w

e,

.s.

~

3

.RC drain' tank temperature / pressure above noma 3 (ambient).

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'. on the control rooct radioactive.Vaste Panel. jPressure ', -

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f

.>3

.4 alams1at'1.5-2.0 psig) '

' ~,

'. Q 4

'Rc systen 'increised 'nakeup fl. ow.is 1bove'nomal for' the.

~

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.~..

variable letdown ficw (u5-140 gpa) and F.C pu=p smal in

. := r il

...;:. 9

,p.

j;

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• f.T leakage conditions.

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29.C.2 Ic:nediate' Action

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A.

Automatic Action _ -

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None

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b

,3 B.

Manual AcHan

.Detez sine RC. leakage according to Op 1303-l'.1' 1.

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(daily surveillance checks)

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29.C.3 FM i r-e-"

a c tf am ' -.

I 1.

If RC system identifled leakage is in excess of.10 g;m i

j the reactor plant must be shutdown within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

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STTION 'D 'Ino'otrative Coda Relinf valve, RC-RVIA hr RChM7TB' t*

L 5.-

- s

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.. 29;D.1

'Sysmtorms 1

~

' 1( / ode relief valve (s) fai1[to' open wheri abose 2435'isig I

M C

-i

^ <*

'or fails to close when below 2285 psig..,

s ew f a.,

i.,

Rallef valve discharge..line temperature is above the.

. y...,

,*,'.2..

e b

t 200 P 'mina, thei EC drain, tank tee:perature/ pressure 'is.

, s. :

s

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7

_,[.

. < n...

...,. p.,...

.l[

abo've ambient and' the RC Syste:s make.up flow is above nomal

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• %'the'1et. down- (45-3,40 3pa) and RC. pump 'seaitin leakage 1.

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c.

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.-(appecximately 5 gps) *

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=.

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29.D.2'.

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'"Iscoediate Action _ *. '.

a I

!s,

.u...

.f.' : ~,jC A.

Automatic Action

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.= = s.w 4

. 5 W r..m

. Reactor trip.from high or lod system pressure.

g 1.

'2.

LP Jnjection.5,f valye. falls to close.

i;

...9 H

E

~

3.

? Manual Action -

[s

.i If code valve (s) fail to open at 2e35 psig place spray y

~

1.

Q 9

valveren EA3 CAL at. console center and open. Verify i[

. s' r

ser beaters azw OTT at console right.

a c

If code valves fail;to close, t an all heaters ON t

2.

at 1= right and isolate let down flow at console i

J t

center by closing RU-73.

Manually initiate N.P Injection if required to' maintain.

l d

3.

r I

a p

8F Tollow-up Actica '

29.D.3 Bo1It pressurizar level if possible at or greater than 220 1.

4=eham with EP Injectico and begin cooldown.

If valve failed to lift, e d with cooldown..-

2.

i.

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... ~,. }. } f.Q, -' '%gg. =. ;.g y, _.y,:. (..,~...

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SEC"IO*! E ' Ino r:ratiire P wsu512tr K2rters.. ;. ~

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inater 1.iaks fa'11 to,ene'rgize or.de-energize;if RC pressure is at.

.{

• 1 F ~,. s.'

L heater bank'serpoint.

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... JF 1

Bank 1 Bank.2~

Bank'3 Bank. 4 -

Bank 5 Units'

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~

g, c

.m'i

.ON.

2135.

. 2135:-

2135

,2120 2105 PSIC.

d, e.,....

CIT 2155

., 2155-p' 2147 "..

_s

' 2125-

.PSIC. -

~.

1.

.,2140

- f n.m

. ~.

NOTE:

Banks 1/2, &- 3 are full' on at 2135 psig

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's,,

- 3

..s.

.P" 2..

P.ressurizer level-Lo-Lo alarm at 80 inches.-

h;

.,~.

r,-

rp

.-s.

')

3.

PreAsui-izer heater power supply ground alar:n.

5 a

A. Abnormal console indicating lights, for the heatingigroups.-

-.f - ;

4

• ~.

-7.j 5.

High 22,55 psig or low 2055 psig pressure alarus.

1,:.

29.E.2 In-.ediate Action

1

-),o A.

' Automatic Action M

[

.1.

• Tor energi=ed heaters and rising pressule: Spray valve

.e.

H

~

RC-Y1 opens (red and green console jog' button. lights)

.)

o None 2.

For loss of heaters and decreasing pressure:

ia 3

B.

Manual Actico 4.

s

.i 1.

Place heater controller in Manual control Jf control n

malfunction'is suspected.

r y'

For energized Naters/ rising pressure, attempt to de--

t r

2.

energize all beaters (at console right) except group 1 or 2 3.

For loss of heaters / decreasing pressure, attempt to energi=e f

Backup heaters freis cocsole,cL.' If unsuccessful, stare l~

t i

reducing unit Imad.

,l 29.E.3 Tollow-up Action 1.

For energized beaters, open heater breakers in question at I

the pressurized Ecatsia Control centers except for group 1 or 2 5-0 J

i

\\

s

. ~.. v. : n..,

m.

...~m...=a.a... w.

q

.;. - w

,33

{...

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j Iv

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1m

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i

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b.

D CTION E (CTf?'b)

.5..

I

.~

1

?

~29.E.3' rolled un Actton.

l

~

~.

(

. 2.

Control RC pressure.at nor=al'2155 psig.setpoint with.RC-V1.

L '.,' d spray valve in HA'. MAL.

- ', p. f

g., ' '

j.

[

' ' 3.

Tor.de-energized heaters, deternine* cause and 'if i.nipf"= o'f ',..

~

_e

.b

..T J.

Sih one heater igrap.'is notloperabie. continue load Muction to ' ',..

y 3

,,1

^

4 shut down and possibly c m id,6wn condition'.-

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s

-: g, s

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(_

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4 i

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n.,

u

-w.

b.

l

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1,.

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n g

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l n

.l f.

L F

g-h y>

14.

t.

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i c

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n 1

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SECTICI r

'P.alfunction In ?ren2eerimsr G vel Indicstion cr' cents l z

29F.1 Sventoms'

% ~

+

J,.

1.. Disagreem.ent between the.c.onsole recot-f.e'r ievel re.adouts of core t.

5

.'- =

,..'than 12 inches.'*

,. I, p

1 y.

,4

.i.

-(

. 2.. Rapid change in indicated / recorded. level due to loss.'of co pensatico I

a :

- or loss of power or d/p cell Iailure or o'ther'malfu?.:: tion'.

k

..~/

9.,

.29F.2-

• Immediate Aetico

'~

s.

, es

.1.. If 1.ndication. falls. low-r

. A., Auto:natic Action.

..v. -

i 3

.m w

y s

r 7

Pressurizer heaters tiip Q'80: inches, cakeup valve W-v17 opens, (L

' M,,

and RC pressure increases.

E e

' 2.-

If indication' fails high:

k e

y

.,u

'{

Makeup valve W-V17 closes.

g-B.

Manual Acti:n p

.y

[

1.

When any two of three console. econ'tr level transmitter read-outs disagree by more than 12 Inches, 'take manual.cental of h

r level ansi then s' elect the third transmitter for indicstloa.

[;

~2.

Re-ena.@ heaters if tripped due to;,r.alfunction.

l r

29T.3 Tollow-up Action u

1.'

If the switching level transmitters has not rectified the conditica, i

~

switch to the alternate temperature detector.

t 2.

If pressurizar level ncorder indication is lost, select another

.a r

transmitter'or use the computer for level indicatica. If computer e

level indication is selected be sun to select ta=perature compen-

}.

4 sated pressurl=er level (Pt. f1710, 1721 & 1722).

[

L L

y t

l 7.0

._v g

.z -..

---.~ n r.

n,g

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-a.-m

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Pressurizer Spra'v Valva Fa116ra. ~

s'

• .'.'c

.SECTION G' i.

F e, J.

f..

f

[

. j, 29.G. I.

. Sympt' oms,

z

-0 1.

"RC-V1. siray;valvc fails'.to. ogien when' thF,RC's.ystk. prdssure. ' "

l l

1 f

.z

=

.'is greater, than 2205 psig., '., ~ ;'

I. (

- 7.%m. ' ' '

~

.n r;

, fA,

.2.

RC-V1 spray lvalv..e'.15.open when th'e.RC system.i's,=less tha'n-.

..~

i <

..w

. 2155.'psig.-

~~

~ -.c

?;..

.: ~ ' ',

..; ?..

. _;v1

^>

.1:

-4

. 29.G.2

• "Imediate' Action A.

. Automatic Action ',

,.,r.y.

,)-

' q',

..~

1.)

1.

RC system pressure greater than 2255 psig a'ctivates t

3 7

s

/.4..

RC-RV2. electromatic reli.ef 'and the high pressure alana.

j i

.._. 4.r:.

2.

- RC-V1 failing open (in auto) causes RC systen pressure

'M J-@-

h 3,t:3 to stab 11ze at approximately,2100 psig. ith all heaters -

w s

1

f, J.

"on".. -.,

r

[

3.

Failure when manually opened beyond the automatic limit g

?

i position caus'es continued prassure drop and alarm at.

~,

J

?.t 4

.' ?

2055..

.B.

Manual Action, y'

1.

Control RC-V1. opening or clssing n MANUAL with,jogbuttons.

3 2.

If the spray valve has failed open, control pressure by

..j closing the spray block valve RC-V3.

i NOTE:

If the " Block" valve RC-V3 is closed. it must be 2

periodically cyc1'ed to k'eep the spray line wars.

i 1

.l Cycle RC-Y3 open as nec'essary to stay above RC p

1 0

pressurizer spray line temperature alam of 450 F.

(Computer point 520).

j CAUTION: Do not exceed a AT of 410 F between pressurizer j

8 temperature.and reactor coolant hot leg ter; erature.'

8.0 y

t

._ _ _., v. -. 3.., ;

.....;.~.-..

_.;,,;..._..; 9ma..y.5,y, _,,.g

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=

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a u

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+

t i

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w

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F EP1202ig.

06/02/75

f*

J.

'Rcvisica 2-

.1

~:.

. s. c

i.

C-3..

Reduc.e rate.of ICS load chanc.e toiless.than 1",.per-

-. 4 v.

mimite 29.G.3 Follow-up Astion. '

.. ~

I-

,J 1.

.Conti.nse plant.operition with reduced rate o.f load change.'

t.

4

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?.' _m e

, 4. w.. <

s 9

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G.. '.

i

.Proce. dure :*uchsr

. V)'

.:a. ". '.

.. r.

~..

. i

?

, Procedure.. Title Pressurire

..E',.

~~

System Ts*1ure:

.y 9.

.:.e

.N.

Reviewing Grganization S C'J. -

'T

,.?-

,'. s..

..n..

.r.

• .. +

~

^.....

4 ~

s... -

~2/26/71s ' --

Comme.nt Let.te.r Date

.h g

.v

.c

~

..,.,.~

'. ~

.w

~ ~ '

Coenents Nesoived-(Dat h

• 3/6/7s-

~

' D, s.

m

..- -. ~..,. -

. ~ '.

r.

+

s

)

Coceent '.

i 7

. Remarks

.. i OP. Para Coenent Summary Ir.co: orated Yes/::o 9M l

^ * -

.s..

Ite:s !s not clearly a syzpton of an '

Yes Deleted sycepton 7

23.D.1.2 d

inooerative code relief valva.

leater s'oppoints' show~ are not cicarly stat. d Yes Banks have been shown at 212-1.1 9

' These backs should be shoen at thoff actua!

their actus1'setroint values.

• 1 setJoint val.ias..

'f2

!*o

• de agree with your state-2'J.E-1.2

! ass of pressuriter level will cause lockout

nent but we a.w really of pressuriser heaters, but is not a sympto=

ad?.ressing inm erst!re 2

of heater failure pressurizer heaters.

Yes Added wotMs to insure te:--

'2'Jr. 3.2 Computer pressurizer level is not temp.

cogensated and an appropriate setpoint -

cospensated pressurizer stated..

level is selected. Added I

computer point 5's 1720, 1

1721, 1722.

n Yes Has been added to origina Ceneral Page 8 is missing on copy reviewed Basically covered manual

(

action & Tollow Up actic, I

for 2ressuriser Spray i

j Valve Tailure. It l

i cc: Messrs. J. J. Colits l

4 L A. Creena l

Emviewing Org=4e= tion f

~

.. ;......- -,... =: Q.,,..s,..,,,,ss' 7 ; _.p

. g.y.

. g.y.

.wr,.,-,-

.y.,,., e.,, e..w.,.,

y w-

' - <~-

=. g-(.4.,

1 y***,*4...'-.'.-._p W ** ?.,,.

r t

,, I

'I L

~

~

~

~~

fc

,; O Q M)...

=

s

. O..

a F

i

's

,-,a..

1 P

=

.t..

r

~

.s.

..I

.9

..CO?.3 Ccec:r.t Ecsolu o.

.i

• s

. o

• N

=, -

.,.~-

i

.,.y

g.,

t i

.,p 12 2-2

['...

Pr. ocedure !!Sr

=

Pressuiider Systes Tailties d

,Pr cedure.Ti le.

- -24 i.

l i

s-BCW 2,.f"

. Reviewing Orgasi.:.ation J s.

,, :q

~ ' -

. 2/26/7ti' -

4*

n

.r 4

- Co:::oent Letter Dats

.S

-f

'3/5/74

.M

• Cocoents ?.esolved (Dat.e)

NC,

.e

~

~

l

.,. ~

y C_ =.ir.t."

Ir.co.rorated Remarks

1. 7 OP Para

- Cocrwnt Susnary ves/::o

.-=...%.,

...b

~

included:

~

.'.3

~. -

fote: If the Block valve RC-V3.Is closed, it cust be periodically cycled h.a e

' to keep the spray line-j

~

wam 3.

Reduce rate of j

"-~ '

ICS load change to less

. r. i Y

I than 1% per =inute.

Tollow tb Action Ni g i 290.3 - Continue plan operation with reduced,

rate of load change.

1 t

aw, v

-1 J

4 i

I cc: Massrs. 7. J. Colitz l

K A. Creene

~

Reviewing Organiution 1

\\

(

w****

s

,e 5 g.

._--r

.* +

' H.".'"..",.' y,p qq -,. g *~

~

"7.,

- y

., g I., - ? ,] ' '" * '.

e

.*\\

.a f'

-- -,- m -+ -

.a -.. ~

r.

..T. O. sN.'.

l t

r.

2-10

\\

i t

s-1

..=.a as 9

'O f.6

• 8 e

l q

b

• • • • • N ee

..e, s

Ge m,

i