ML20067E256

Forwards Rev 1 to Tabular Listing of Equipment & Operator Actions for Achieving Cold Shutdown for Postulated Fire in Control &/Or Relay Rooms.Original Table Provided in

ML20067E256
Person / Time
Site:	Crane
Issue date:	12/28/1982
From:	Hukill H GENERAL PUBLIC UTILITIES CORP.
To:	Eisenhut D Office of Nuclear Reactor Regulation
References
5211-82-302, NUDOCS 8301040095
Download: ML20067E256 (18)

Text

.

s GPU Nuclear Corporation G U iuclear gene B 480 s

Middletown. Pennsylvania 17057 717 944-7621 TELEX 84-2386 Writer"s Direct Dial Number:

Decenber 28, 1982 5211-82-302 Offic' of Nuclear Reactor Regulation Attn:

3. G. Eisenhut Division of Licensing U. S. Nuclear Regulatory Commission Washington, D.C.

20555

Dear Sir:

Three Mile Island Nuclear Station, Unit 1 (TMI-1)

Operating License No. DPR-50 Docket No. 50-289 Fire Protection - Alternate Shutdown Capability Attached please find Revision 1 of our tabular listing of equipment and operator actions for achieving cold shutdown for a postulated fire in the control and/or relay rooms at TMI-1.

The original table was providcd to the NRC Staff in our letter 82-270, dated November 15, 1982. We are providing this revised table as a result of our verbal commitment to members of the NRC Staff on December 10, 1982.

Since rely,

. D. Ilukill Director, TMI-l llDil:CJS:vj f Attachtrent cc:

J. Van Vliet R. C. Ilaynes, w/o Attachment R. Conte, w/o Attachment OOb l

8301040095 821229 l

PDR ADOCK 05000289 F

PDR 1

GPU Nuclear Corporation is a subsidiary of the General Pubhc Utiht:es Corporat:cn l

l

1STR03UCTION The at:achsd tablo previdas the actions required :c successfully cc:ploto the re=ote shutdown. of TMI-l'in the event of a fire 'in the cable spreading roc: or control roc =.

The following assu=ptions tere =ade in the develep-ment of this procedural guideline:

1.

No credit is taken for any actions frc: :he cen::cl roo= except reactor trip.

2.

Evolution =ust be carried out with er withcu: cffsite pcrer available.

Loss of offsite power =ay occur at anyti=e.

3.

Any or all aute:atic signals =ay fail to actuate.

4.

A single spuricus actuation =ay occur at anyti=e during the evolution.

5.

There are five available opera: Lens persennel:

a.

Shift supervisor b.

Two control roc = operators c.

Two auxiliary operators 6.

Spurious actuation which =igh* result in a rapid rac:cr transien:

vill be dealt with directly from the re cte shu:dern station.

7.

This is written for "A" side ce=penents, bu: =ay be changed to "3"

side at later date.

Ass" 'ng enly the =ini=u= condensate s:crase tank vclure cf 150,000 gallens per tank vill allev at leas: 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> of sustained he: shutdcen ccnditiens pric: ::

beginning a cooldown, cooldown vill be acec:plished in less than 72 hcurs frc= the star: cf the fire.

Additional varer sources are available in the condenser he:

vell and dc=ineralized vater s:crage tank which vere ccnservatively ignored in this cvaluatien.

The ter: " cut and ju=per" refers to a procedure whi:h shall be devele;ed fer each cc penen: identified as requiring this cperatin; ::de.

The ;;ccedure vill identify these centrol wires which =ust be discennected c: cu: in :: der c rencve any pessible main:ained ce==and signals.

I: vill aise iden:if, :ertinals.:hich ::s: he jurpere ir c: der to energize the app cpria:e re:c: cen:: :::: c relay.

1: is intended i

ha: the " cut and ju=per" activi:y fer each cc ;cnen: vill be perferred a: :he l

cc ;cncn;'s rewar source.

1 Pressuri:cr depressurization, which is necessary :o " ilize the decay heat removal I

(DHR) syste=, can be accomplished without the use of :he pressurizer vent or relief i

valve during loss of offsite power conditions.

Ambien: losses to the reactor build-i ing are sufficient.

Section 2.1.1.3 of the TMI-1 Restart Report indicates that 107Kh' of the hea:cr capacity is required to equal ambient losses and maintain pressurizer pressure at a steady state value. This is thus a =casure of ambient heat loss.

Using this value, calculations show that the systen vill depressurize to less than 300 psig in about 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />.

The DHR systen vill require about 14 hours1.62037e-4 days <br />0.00389 hours <br />2.314815e-5 weeks <br />5.327e-6 months <br /> to achieve cold shutdown conditions.

The remaining time, approxiestely 15 heurs, can be in hot shutdown.

Thus, pressurizer depressurization via cabient heat 1 css vill not preclude reaching cold shutdown within 72 heurs.

g

(

Ctf I DF.I.1 til:S Folt SilllTDOUf!

KEY l.Q.

0.

ACTIOra itSI)S I.0CK OTilElt i tIDI CATI Ort C0tiTit01.

DI SCllSS 1011 1

Isolate X

A.

Itequired quickly CommunicaLions 11.

Tliis capal>ility aloes system from relay not presently exist.

room (Announce fire and dispalcli peinonnel in

' stations) 2 Transfer control of X

OTSG level anel EIN and ADV A.

1,ocal switclics in EF-V-10 A/Il and OTSC pressure on valve control vicinity of remote shutdown ilS-V-4A/D to itSDS RSDP.

Also on IISDP panel for transfer on one chand and t ake inanual l(CS temp, P7.It and on Cll elev. 333 for the control level and itCS other channel.

(lJo t es 7, H.nul 9) pressure on IIS DP 11.

Spurious opening of valves will be overridtlen) 8.i De--enc e P. l ze X

I"/.It level on 1,oca l lireaker A.

lleaters shonid he de-piennoiizei heat r e..

IrSi>P encir,1 zed to prevent damane If auto trip on level falls, n.

Open breakers at IF. 6 IF lleactor liltig, litg. Swgr. on TB clev. 322'.

'l Close va lver, ilS-V-!! A X

OTSG pressure, A. TilP valves open results in and flS-V-811 to deal ItCS temp and rapid overcooling.

Isolation with stuck open.TnP itCS pressure on required to prevent potential l

IISDP thermal shock.

valve.

CllII)El.IflF.S l'Olt SilllTDOWil i:Q.

KEY

.).

ACTloti l(SDS 1.0CK OTilElt IllDICATIOri CotiT1101, DISCllSSIO!!

?.

Titl P ltEACTOtt X

SI:ll on IISI.'P A.

Iteactor may l>e tripped f rom (Turliine trip wi11 l' rip from IG anil IL SWCit (Cll elev. 322) occu r aut omat ically on Control reac t.> r trip.

Tlil:, wil l Itoom II.

Letdown may or may not inc lie a protecteil circuit late automatically on reac'or t

to assuie function) trip.

('l u rlil ue normally t r i g.:

ou reactor Ltl'.

or 1.00P)

L

's Tit l i' til'W pinops X

OTSG Icvel A.

Spurious f ailure of FW FU-P-IA/Il on ItSDP Re;; valve would result in rapl.

j overfill af OTSC (See flotes I, :',

1, 4 and 5)

II.

Auto trip on 1.00P

(,

Verify power llus energized avaitalile io "l)"

Ilun i Inlits at itSDS for lluses: 11), I P, l it, lA ES tlCC, IA ES V ?!CC, lA ES Screen llouse llCC, 1C ES V tlCC

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ClllDEl.I?lES FOlt SilllTDOWN s

s i'Q.

KEY

'O.

ACTIOli ItSDS 1.0CK OTilER I!!DICAT10tl C0tiTROL DISCUSS 1011

._. i 13 Cou'.Inued c) luolate Breaker control X

circuits for following at bus ID loail and olien Cub icle breakeru A l.H1 pump ( El'-l'-2 A)

X(ID3)

?Ill-l'- 1 Il X(lD8)

Ill(-P-1A X(IDIO)

Dil-P-1A X(lD6) f)

Close D/G Breaker X

" ready to l oa d '.'

Operator observes " ready to los Cubicl(

Indication light Indicator at SWCR ID prior to ID2 at ID SWGR Bus ID closing D/G breaker volts and amps at L

ID SWGil g)

RecIone El'W motor X

'l60V breaker i

'iWGit

.:ob i c l e ID3 Ite-close breakerr. (if opened) feeding:

Transformer lp

.:ub ic l e ID5 Transformer lit

.:ub ic le IDll NOTE:

D/G may start due to spuriona signal at any time - See Hote 0

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CllI DEI.IflES FOlt SiluTDOutt EQ.

KEY 0

ACT IOil itS DS LOCK OTilElt Itll)ICATI O!!

C0t1TR01, 1)lSCUSS10!1 9.

If RCS pressure decreases pzR level and RCS A.

PottV (RC-R*J2) r.tay to less than 2000 psi and pressure on RDSP spuriously apen.

Action PZlt level is increasing to de-energize it will result or stable, then:

in closure of valve.

a.

De-energize PORV X

11.

Rapid action would be required to prevent 1 CS If this is not offective, saturation and IIP: initiation.

tlu n

b. Close spray valve X

C.

Ifanual co.itrol of spray valve at t!ie 480V-EC-CC-IA (Cn elev. 322 ft.)

D.

Spray valve open depressurization rate of about 1.1 psi /sec.

20 Iteduce number of HC X

Pump power indic-A.

Key lock switch on pumps'to one per loop.

allon adjacent to 6900V SUGit on Turbine (T r i p 11 f. D pumps)

RSI)S llul1 ding elevation 322 f t.

l

(ll

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ACTIO!I ItSDS 1,0CK OTill:R lilDI CATI 0tl CollTROI.

DISCUSS 10ft i

=

fe.

1:<;tahl i nli It!! cool ing -

Supply fluclear ltiver Uater, Iluclear Service I.

Ileac t or Ill ve r Wa t e r

(.

Stast Ild l'a n :

fe a.

Open flS-V

'3 2 A !. IIS--V-51 A X

lileed air A.

Valven flS-V-52A & 53 i

r:upply off Open on loan of Innt. alt.

Open lireakers for X

llandwhccin 11 Breakern on 480V ES Ittt-V-3A/4A then manually CC-1A (Cil Elev. 322')

Valven at IB clev. 295' open valven.

ItR-V5 X

llandwhcci C.

Open if Itit-V6 fall shut.

4e.

Start Rit-P-IA X

D.

flanually start from CB elev. 322' E.

flanual at 480V-ES-CC Sil.

Start Rin coolInn Ian

( All-E-I A) lA (Cll Elev. 322')

Sa Restart air compressor X

A.

Located at 480 V 1A All-P-- 8 A

ut & Jumper 2S MCC Control Building Elevation 322'-0" Sb Control Building X

recirculation fan

ut & Jumper B.

Located at 480 V 1 A

( All-E-18A and All-1:-19A)

ES MCC Control Building Elevation 322'-0" Sc Restart I n t e rmed ia t e X

C.

Located at 480 V 1A liuilding Ventilation Fan Cut & J umpe r ES MCC Control Building Elevation 322'-0" All-E-24 A

Gill DEI.INES FOR StillTDOWN EQ.

KEY

{0.

ACTI0ft itSDS I.0CK OTilElt IllDICATIOl1 C0rlTit01.

DISCUSS 10t1 6.

Op'en CO-V-10A 1. Il X

llandwheels A.

Open breakers at (Isolation valver, for 400-V-TP-CC-1A and IA condensate storage tanks)

Itadwaste CC on Til elev. 322' then. locally open valves is closed. This assures that adeiluate condensate storane tank inventory will be availabli

'/.

Stop itCP-lC (normal X

A.

6900V SWGR on turbine shutdown procedure if building elev. 322 ft.

offsite power available)

'8.

Ilypass llPI lujection X

A.

Manually close relays on when primary <l750 psi cut and ES channel relay cabinets IA, and >l650 pal jumper at B, C and 2A, II, C (Cll elev. 338 F.. S.

Actuation Cabinets

- - -.... - =. - -. _

,! 9.

Ilypan ; I.P I injection X

A.

Same as above when primary <900 psi cut and and >500 psi jumper at l'.S.

Actuation Cabinets

Cll1 del.IflES FOlt SilllTI)OWil

';l:y.

KEY 10.

ACTIOri RSDS 1.0CK OTilER IllDICATIOll ColiTit01.

D I SCilSSIOtt

- - - =

10.

Isolate Core Flood tanks X

A.

Breakers at the 480V (close va l ves CI'-V-l.5, n) cis t and F.SV-CC-I A (Fil elev. 281')

luinper at 480V ESV-CC-lC 31.

Al i gn Dit lleinoval S ys t ein :

A.

Ilreakers at 480V O mn breakers for the ESV CC-l A (All-305) l a.

tollowing vai>cs:

Dil-V-4 A, SA, 7A &

IIS-V-2 A X

.tandwheels b.

Open breaker for 11.

Breaker at 480V lill-V-3 X

llandwheels ESV-CC-1C (Fil-281')

c.

Manually close or C.

Aux. Ilu11 ding check closed clevations.

1)ll-V-SA/ Dil-V-7 A/

liS-V-- 2 A X

llandwheels D.

Aux. 11tilldity

<l.

flanual ly open or elevations.

check open Dil-V-:1 X

llan,1whec i s t ill-V-4 A X

llandwheels X

llandwheels Dil-V-12

ClllDFl.lflES F0lt SilllTDOWil II.Q.

KEY 10 ACTiott RSDS I.0CK OTilElt IIIDICAT10t!

CollTit0L DISCUSSION c.

Open valven X

E.

11reakers at 480V Dil-V-1 & 2 cut &

ESV CC-lC (Fil 281')

remotely jumper at ESV-CC-lC F.

Operate witti breaker open for Dil-VI or Dil-V2 to prevent spuricus opening, 32.

Open ItC-V-4 remotely X

A.

Ilreaker at 480V ESC-CC-lC cut &

(Fil ele. 281')

jumper at ESV-CC-lC 31.

Close Dil-V-19A X

A.

!!anual valve in All (throttle valve for elecay manually heat removal flow) stroke valve I'.

Start I)ecay llent removal X

Decay heat flow &

A.

15reaker at 4160V pump temp. on local ES-SWCR-lD (Cil elev. 338')

(Dil-P-I A) panel 15.

Throt tle open X

RCS Temp. on itSI)s A.

Manual valve in All Dil-V-19A (Control manua ll y for coolilown rate coolilown rate) stroke va ls a

i l

i X

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a

NOTES ON SPURIOUS ACTUATIONS 1.

Spurious stopping at EF-P-1 may occur. _This is n6t a concern since a motor driven EFW pump will be started.

i.

Closing of E5-V-1A or B may occur.

Suction is still available from 1 (one) 2.

condensate storage tank.

3.

If EF-V-2A or 2B closes, the unaffected SG is still being fed.

4.

MS-V-13A or B are redundant (air operated) steam supply valve to the EFW turbine.

Failure of any one in a closed position is inconsequential. Alco, MS-V-10A and B would be available.

5.

!$-V-10'A or B are the motor driven steam valves to EF-P-1.

Failure of any one is inconsequential and MS-V-13 A and B would be available.

6.

MU-V-20 and MU-V-32 may spuriously close. These valves are required to provide seal injection. These valves will be monitored from the RSDS and will be reopened locally if required.

7.

15-V-2A or 2B rsy spuriously close.

This will isolate OTSG A or B ADV & TBV.

Remaining OTSG can be used for decay heat renoval. 13-V-2A or 2B will also isolate OTSG A or B from turbine driven EFW. The remaining valve is sufficient to provide continued turbine driven EFW. Motor driven EFW will be available as well.

Further time is available for operator action to open valve.

8.

Spurious closure of MS-V-4A or 4B (ADV) will result in adequate decay heat re-moval capability frcm the unaffected ADV.

Contrcl can be transferred to the remote shutdown panel and the closed valve can be remotely reopened.

9.

If reactor coolant pu=ps trip spuriously or an LOOP, the EFW System can be used to raise the OTSG 1evel to 50% in a controlled ranner and a normal transition to natural circulation will result.

10.

Diesel Generator may start due to spuricus actuation signal. D/G breaker is interlocked with the incoming feeder breakers which will prevent its closure if incoming breakers are closed. The interlock circuits do net run through the relay or control rooms. D/G =ay reamin operating at idle until loss of offsite powers (LOOSP) confirmed. On LOOSP, operator at ID suitchgear will take positive centrol of the incoming cnd D/G feeder breakers cnd will nanually load the diesel generator.

If failure of the auto load shedding circuit is concurrent with D/G Start and LOOSP, generator overload protection connected to a separate dedicated set of fuses will trip the D/G breaker. The operator will eventually take manual control of the D/G feeder breakers and of the component feeder treakers and will manually load the diesel generators.

11.

The breaker for DH-V1 or DH-V2 will be raintained in the cpen positien during normal operation to preclude spurious cpening of both valves.

..- - -