ML20024C586

Procedure Sp 1103.05 Pressurizer Operation

ML20024C586
Person / Time
Site:	Crane, Davis Besse
Issue date:	07/09/1975
From:	Jadgchew B, Nissen B TOLEDO EDISON CO.
To:
References
TASK-02, TASK-2, TASK-GB GPU-2014, SP-1103.05, NUDOCS 8307120842
Download: ML20024C586 (31)

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Systas Procedurs SF 1103.05 r

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Pressurizar Cparation 2

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1.1 To provida procedures for operating the pressurizar la the following modes:

Mode 3

Pressurization (Startup)

Section Moraal Feuer Operation 4.0 5.0 Depressurisation (Shutdown /Cooldows) 6.0 Desertoetoa j

The pressurizar is a vertical-cylindrical vessel that is connected to the reactor outlet piping by ths 10" surge piping.

suriser establishes and maistains RC pressure within prescribed limits andDe electrica provides a surge chamher an.1 a vatar reserve to accommodate changes in reactor coolant volume during operation.

The water volume is based on the

,,,,,,,cagebility of the system to experience,a,re,a_etor,tytp and not,,

o Lees level indication while matatatatas enough to preclude activation of the HP injection systas (1600 peig).the pressure high staan volune also provides the capability of the system to experience aOs roastor trip and not uncover the low-level sensors in the lower shell sad N

to maintain the pressure high enough to preclude activation of the HP

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Injection System.

O, The steam volume is based os the capability of the system to experience a turbine trip and not cover the level sensors in the upper shall (327").

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S' measle in the upper section and electzte heaters'La'~th' e 1ower half

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' sata Gia the* steam and wat'ar'at the saturation temperature correspond.

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ing to the desired RC syntam pressure.

During outsurges as the pressure

• in the reactair decrea'ses, some of the water in the pressu, riser flashes 4

to staan to=="*= N the normal operating pressure. Electric heaters are actuated to restore i

pressure.

During insurges, as pressure in the reactor i

i system increases, some of the staan condenses and a water spray from I.

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a reactor inist line also condenses steam and thus reduces pressure.

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flow and heaters als controlled by the pesssuriser's pressure controller.

Spray

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Pressurwir 3g333y,3 pat, controts h

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h;.?"i There are three bandles of electric heaters located La the lower section of the pressuriser.

These three bundles are divided into six (6) heater banka.

p..i 2reasuriser haster banks 1, 2, 3 and 4 are non-easential heater banka, i.e., the 5

power for thane banks come from noenssential sources.

Pressuriser gasential Bestar Baeks 1 and 2 are powered from essential sources and are required to be operable La order that the unit aan be shutdown troer the Auxiliary shutdova Penel CASP) (C3630).

De following is a summary of the controls for the sia l

heater banks. See Enclosure 2 for a ausmary of the power supplies to each heater bank. (

Esater Esak 1:

Baater Bank 1 is sa SCR controller group. De heat input to the pressuriser water of this bank can be verted from 0 to 126 351.

g Bank l's controller (7Ic-RC2) is a Sailey Hand / Auto Station, loca.

t tad on the Reactor Cootaat Makeup and Pressurizer control C M

(C5705) in the control room. When the 3/A station is in Attro,.

tLa heater bank responds to a pressure error signal of -100 peig

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' e to O pets frort 2153 peig RCS pressure.

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In hand the heat input

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to the pressuriser water is varied by the operator.

f on the M/A Station is scaled 0-100 The indicator E

With HEAS the M/A station indicates the RCS pressure erro. VAR. selected, 7

pois from 2133 pais), with 0 indicating 20$$ peig. 30 indicating g

r sigast (+100 2133 peig.

With POS selected the H/A Station indicates the k

danand signal betag sent to the SCE W

(0 to 100%).

Esas Banks E!t 2,3 and 4:

When energized, these heater banks will supply 378 W, 304 W and 6

378W respectively to the pressurizar votar.

,E These heater banks are controlled by aa CN-CFF control, i.e, when de-energized heat entists is 02, vhta energized heat output W Ls' S

at the beaks' anzimas.

esmerol switches tecated'on theR ose hnater banks are controlled from their respec suriser control Cansole (C3703) in the control room. Reactor Coolant Makaup an W

g Reater Bank manber

_ Control Switch Name control switch No.

c Bank 1

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RC F521 BANK 2 RTE HIS-EC2-2

• s Bank 3 3

sank 4 RC FRzt EANK 3 HTR HIS-RC2-3 E

na anza aAux 4 utt

. uts-RC2-4 Uhen the respective control switch ta placed in "A*:T0" the controlled heaters will

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reopend at the pressure and level setpoints shown on Enslosure 7.

""" a* % -==sition.of these hanter beds is provided by placing the control switch in either Manual control f

will not respond to either the pressure control signals or the low level inter

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n Essential gester N

4 naaka 1 and 2:

Maee heater banka are controlled from essential control aircuitry $

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and are used in shutting down the urit from the y

Paast (Asy).

Auxiliary shutdown 3

suriser water when energized.Dese heater banka each supply 126 m to the pres-g These haster banks are controlled

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when energiaod heat output is 126 m sach.by an on-off control, i.

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Thue hester banks p

any be enstrolled from two locations, the teactor coolant Makeup 4 and Pressuriser Control Console (C3703) in the control room and I

6 The Anziliary Shutdown Panel (ASP).

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AgP Control Mode the ASP, the operator unst place the ASP "tmeal-Remote" s b

(I15-RC2-7 for Essential, Bar.:r.1, Ets-AC24 for Essential dank L

2) La the "tasal" posittoa.

autat The following indications will thea

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1.

Amauasiator/ computer point q933, " UNIT AUX 3D FNL IN OJERATION" g

vill alarm.

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De saber light above the respective " local-Remota" switch.

e will be lit and gq 3.

De Amber "sD F5L" indicating light (II.-RC2-3 for Essential b

Esater Bank 1. ZZ,-RC2 9 for Essential Hester Bank 2) on e

C3703 will light. The operator will then have assual control yb li'.

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SP 1103.03.0 of thh Essential Hester Bank f:na the respective control E

I switch at the ASP (HI5-RC:-5 for Essential Hestar Bank 1. HIS.

AC2-9 for Essential Hester Sank 2).

All automatic as well as Iz

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esmerol room control for the Essential Hestar Banks is defeated D

when in the ASP control mode.

c be Csacrol Boon Modes N

i In order to obtain control of the Essential Heater Banks fros' the g

f the aostrol room, the operator must place the respective ASP h

"Zasal-Ramote" switch in the "Ramota" position. The following S

4=dfraH ans will then exista S

b 1.

Amaussiator/ computer point 9985, " UNIT AUX SD PNL IN CPERATION" E

should slaar.

2.

The red light above the respective " Local-Remote" switch will L

be lit.

E 3.

The Arter "!D FNL" indicating light (IL-RC2-3 for Essential usatar Bank g

= = witt. 1, IL-RC2-9 for Essential Heater Bank 2) os og

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g The operator now has manual control of the Essential Heater Bank from the respective control switch ar C3703 (H13-RC2A for Essen-tial Esatar Bank 1, HIS-tC23 for Essential Hester Reak 2). The Essential Easter Banks can now no longer be controlled from the Q,

esatrol switches at the ASP.

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If the operator places the control room sentrol switch for as r=-H =1 seater Bank (HIS-RC2A for Essential Heater Bank 1 c,

E13-RC23 for Essential Hester Bank 2) La "AUT0". that Essential Esater Bank will be controlled by the nonessential control signal E

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for the sorresponding nonessential heater bank. (Essential Emator Bank 1 will be controlled by the control signal for Hester y

naak 2; Essential Heater Bank 2 will be centrolled by the control signal for Esater Bank 4).

3" With the Essential Haa or Banks in Manual (either CN or OPP) all 3

g pressure control signals and the Law-Iow pressurizer level e

interlocks are defeated.

5 4

k FitESSURIZER $7 RAY VALvt CONTROLT g

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The Prese= riser Spray Velve. RC-2 is <:eatrolled from H13-AC2-1 on the RCS R

Makeup.and Pressuriser Control Panet C705. Uhes in the " Auto" posittoa the-H valve will syste to the 40% opea position when RC pressure enceeds 2205 peig and y

will reesta open until pressure returns to 2155 peig.

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The velve saa be neonally opened by placing the switch in the "Opea " position.

3 If the switch reesias.in the "open" position the valve will travel to the full opea y

poetties and remian eyes regardless of how far RC pressure falls. If the switch is temporarily moved to "Open" and then returned to " Auto" the valve will stay la g

g the position it reached before it was returned to " Auto't The valve will stay in N-j t

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g p* #.. this thlrettled position if the RC pressure remaina between 1.155 and 2203 pai n

12 RC pressure esseeds these limits the valve will respond to the automatic h

eemezola.

If the suitsk is placed La t Eib t ain.1 ed regardze...,he "Close" position the valve will close and will h.w ht.h Re,re..ure A

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light on the control panel comes on when the valve reaches the 401 open position, but if the valve is being opened manually, the light will h

4 so out them the valve reaches the 437. open posittoa. If the valve is more than p

417. opes, it will set some on as the valve closes.

4 tn II2CTRt2tACTETTC RELTEF VALVE CCMCis 25 The Elastromagnetis Relief valve, RC2A, can be controlled t*y hit-RC2-4 on RCS bi Makeup and Pressuriser control Panel, C-5705.

The switch has an "Open" and F

"Close" position with a spring return to the center position, the valve vin

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a-"a=11y opas to relieve pressore to the quench Tank when RC pressure exceeds 2233 psig and will slose when ac pressues drops to 2205 pets.

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9 The valve may be mamually opened by placing the switch in the "Open" position.

3 If the switch is held La the opea posittoa the valve will remain opes.

If the switch La released the valve will remain open until RC pressure falls below 3

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The valve may, be manually closed by placing the switch in the "Close" position but a high pressure of 2233 pais will overrids' anit open the valve.

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c The water level in the pressurizar ta controlled by the opening /clostag of i$

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the Earant Makeup Flow controller valve Ga232).

Hus2 receives its control signals p

from the FAZE 12 VEL E/A Station (UC-RC14) on the Reactor Coolant Makeup and 4

3.,

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7tesourimer Control Console (C5703) 12 the control room. In order to g

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--wa=11y control pressuriser 1**el, the operator mast place MC-EC14 in

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"AnttF" and adjust the seepoint dial to the desired valve.

the camparature compensated levet sisatt to the setpoint and develops demandu c-RC14 then compares Ec

.i alamal to MG32. (Nota The level signal to UC-RC14 may be from LT-AC1, 2 or 3 as salasted at ES-RC14 and may be temperature sempensated by TE-RC13-1 oe 2 as selected at ES-RC15). Mammal concret ter MU32 is accomplished by' placing LIC-AC R

14 in "Emed" and adjusting the demand signal to MU32 by mamma of the toggle.

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informaties:The indicator on LIC-Rc14 wi n furnish the operator with the following E

Q NCDE OF U C RC14 TNDTCATCR SUITCW INDICATCR SCALE R

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W Ante Haasured variable Auca salanco (Should X

3) tadteate 50%)

Eamd Maasured variable 0-100% demand to Mc-32 J

Ante posities 0-10G4 Demand to MU32 b

Band position 0-100% Demand to MU32 fb w

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AP 1103.05.0 N.

C 2-It should be noted that the temperature compensated level signal to 1,I::-Rc14 is the same signal used fo heasar low-low level 18888ghhe pressurizer high/ low level alarm, the pressurizer the pressurizar low-low level alare and the pres.

euriser levet indication on the Fan IZvEL recorder (I23-Rc14) on c5705.

To ="-'=-te abnormal buildup er dilution of boris acid within the pressuriser and to staimize coeldown of the coelaat in the spray and surge lines, a bypass tiew La provided around the pressurizer spray control velve. This continuously str=ulates approximately 1 CPM of reactor coolant from di--k-as of II.C Tamp 1-2 2.

Tus cada relief valves are connected to the pressurizer to relieve systes overpressure. An additional pliot-operated relief valve limits the ILfcLas

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. frequency of the code relief valves. The relief valves discharge to the

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pressurizar quench tank within the containment vessel.

y During cooldown, after the Decay Heat Removat System is p12.ced La ser-vice, the pressuriser can be cooled by circulating water through a connection from the discharge of a decay heat renoval cooler to the pressurizer spray 43 liam.

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6 SP 1103.03.0 Destra condittens Fressure e

W Tamparature 2500 pois Vettama of Tank 670*F Volumn per inch of Tank Emight 1501 cu it (11236 Cal) 26 Cal Imol Indication at Top of aktstar Bundles 24 inches Spesy Flow 190 CPM d

Morant opermetne condition's Pressura Temperature 2155 pois Level 647'T 180 inches Bypass Spray Flow Liquid volume 1.0 CP!t cas Volume 800 cu ft 702 cu ft

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2.'* FRECAttrTONS AND LTNTTATTCNS 2.1 observe any pressure or temperature limitations' (15 peig/200*F) of the containment header whea vestias.. Pressurizer to the Containment Equipment Vent Emader as specified in SP 1104.29

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Procedure.

Clean Liquid Weste Disposal System 2.2 De electromagnetic taltet valve Isolation valve (Rc 11) should be epen and Antamatic Mode malees taastor Coelant System NNI maintenas i

e ta progress.

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2.3 Se pressurizar best:p and coeldove rates shall not exceed 100*F/hr as t

asasured by temperature indicator TI RC 15 located in control room or by eemputer points T776 or T777.

2.4 Maziana pressuriser level at any tins the roastor is critical is 290 in.

2.5 Minisma water level while reactor poser is greater than 157 is 160 inches.

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SOCI:

Dia water level is the minia.am pressurizar water level at which the

't system can assommodsta a reescor trip without causing the pressurizar' J

heaters to be de-energized by the pressuriser to-lo level sacerlock (40).

4 2.4 Miniana t

eritical is shows as en Figure 14. (Eastosure 4)pressuriser wetar levet as any time the reac

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NOTE:

2his water level is the adaimms pressuriser water level as which the N

systas cas =~a==adate a reactor trip without losing level Ladisatise.

l 2.7 The pressuriser smet nas be filled with water above 3.20 taches at any stas essept as required for systen hydrostatic tests.

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7 SF 1103.05.0 2.8, Maaiana pressuriser operating temperature is 670*y.

2J ilhem the reactor coolant temperature is greater than 200 F, a sint-m bypass spray flow of 0.73 CFM aust be maintained.

i 2.30 Ettroges injected into the pressuriser must aos decrease the injectica 1

asaale temperatura more thea 100*F.

2.12 been injested into the gressuriser sust not decrease the injection nessle saaperature below 100*F (NDTT + 608F) if the RC pressure is above 550 peig.

2.12 The pressuriser spray shal*. not be used if the temperature difference between the pressurizar and the spray fluid is greater than 430*F.

(Difference becueen saaputer points T7'ta and T 776 or T777).

p'.Y.(III) 2.13 A minima of one pressurisse code safety valve shall be operable with a lift

. Q.4.2) setting of 2435 pais

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(323) 2.14 Bothyrusuriser code safety valves shall be operable with a lift setting of

• .p Q.4.3) 2435. pais 11% (Modes 1, 2,63) e

'IEB(IES) 2.15 The pressuriser shall be operable with a steam bubble and a water level between Q.4.4)

A5 inches and 105 inches. Ofodes 1 & 2).

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2.24 The pressuriser temperature shall be limited tes l

.4.9.2)

A===h hastep and coeldown rate of 100*F in any one hour period,

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and 83 b.

A anzimum spray water temperature differential of (410)*F. Otedes 1,2,

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p, 3,4,63).

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• 2.37 Esaster Coelant System Leakage shall be limited to:

. $ (IES)

Q.4.4.2)

W /

d.10 CFM identified leakage from the RCS Qindes 1,2,3,&4)

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RE7ts2NCES 3 E3) 3.1 Technisat specifications, sections 3.4.2, 3.4.3, 3.4.4 and

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• A;l 3.4.9.2, 3.4.6.2.

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3.2 E533 Limita and Precautions - PP 1101.01, Section 1.3.

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3.3 EBSS Seepeines - FF 1101.02, Section 1.2.

3.4 Flaat Shutdown and Coeldews,

't 1102.10.

3.3 Plant startup, Fr 1102.02.

3.6 Filling and Vesting taastor Coolaat system, SP 1103.02.

3.7 Drainias and Mitroges 31asketing Raaster Cootaat System, SP 1103.11.

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3.8 operational Chemical control Limits. FF 1101.04.

3.9 caseous Radioactive W a te System operating Procedure, SP 1104.27.

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SF 1103.05.0

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3.10 Rydrogen Addition and Degasification Procedure. SP 1102.12.

3.11 Mitrogen Purse and Blanketing Procedure. SP 1104.26.

3.12 Passaurisar Systems Tailures. EP 1202.29.

3.13 Boros Coassacration Control Procedure. SF 1103.04 3.14 Pr'esauriser Imel surntilanse Test, sT 5064.01.

3.15 quench Tank operatias Pressdure, SP 1103.17.

3.16 Basisar Areas 3 spling Procedure, SP 1104.10.

3.17 Reactor Coolant System Pipios and Instrumsat Diagram M-030.

j 3.18 Enestar Coolant system Details P61D M040A.

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• 3.1"9 Eles'estary Ulring Diagraca RCS, Drautas No. E323. TEco Tile No.1949.

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4.

PRESSURIZER OFTRATION (STARTUP)

C 4.1 Prerequisites

_ 4.1.1 The Beactor Coolant System is filled, wated and pressurizer level is 80 inches er greater, as read on LI RC 14 in control room, as p SP 1103.12 Filling and vencias the taastor Coolant Systas, l

j session 5.

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A

_4.1.2' Preseuriser level transmittar reference less are filled with water 6

and level instrumentatios calibration ha'a been checked La accordance 4

with the requirements of Pressuriser Leve1 Control channel i

-Q Calibration 32:040.03.

4.1.3 Power is available to pressurizer instruneatation and controls and i

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all pressurizar heater bank circuit breakers. (see tactosure 1 and 2).

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_ 4.1.4 Ec syntam valwe associated with pressurizar operation are positioned s.3 is assordamse with Valys verification List A of this procedure.

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'*a=*= h ae Equipesas vast Header, Reactor Coolant Drain Tank,

_ 4.1.3 Gaseoes Radioastive Wasta system and Sampling System are operar.ional l*

to allew vesting of the pressurizar steam space.

_ 4.1.6 Beren soneentracias has been equalized betwen the pressuriser and the Reester Coelant System by using Prsesuriser Spray Valve RC 2 or the normally throttled Bypass Valve, set at i to 3 CPM.

3DEE: When Reactor Coelant Pumps are not operating, The Decay Heat syntas will be used to provide,pressuriser spray by opening valves DE 2733 and DE 2736, from DE Pump Discharge to pressuriser spray line.

NOTE: Limits os boros soecentration between the pressurizer and RCS should be < $4 ppm 8.

Reference PP 1101.01 Section 1.3.3.11.

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, 4.1.7 The BCS pressure is at 30 to 30 pois with a nitragen blanket.

4.1.4 Makaup and puriffcation Systaa is operable as per Operating Procedure, SP 11C4.02.

p 4.1.9 quench Tank operable as per Quench Tank Operating procedure.

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SP 1103.17.

4.2 Procedure r

30I1: Use in condunstion with Startup Procedure, pp 1102.02

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4.2.1 Establish a vent path from the pressuriser vapor space to the pressurizer quench tank by openias RC239A. pressuriser vapor i

semple isolation valve and RC200 pressuriser vent line isola-tion valve.

4.2.2 Station an operator in Containment at RC 147, pressurizer vent' throttle valve, with cousmanicationa established to the Coetrol Esen.

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4.2.3 From the Control Room, en the RCS Makeup and pressuriser Control Panel, C3705, cura on the pressuriser heaters to besia tassessing pressurizar temperature for forming a steam bubble.

'e Moniser pressuriser temperature on TI RC15 and RCS pressure on

• ECS wide range recordeir RC 2A1 or RCS lou range pressure PI-AC2A6. Pressuriser heater controle and heater bank eines 3

preneuriser heatup rate 100*P/hr.

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(See Enclosura 3. Pressure and Temperature Limitations for Esseny)

C3 creue Conereller s1:e r -

SCE I'4C RC 2 126 W Q

2 BIS RC 2-2 378 W

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2A E13 BC 2-A 126 W t

3 1213 BC 2-3 504 W

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IIIS EC 2-4 378 W 23 IIIS 3C 2-5 126 W NOTES Meet input from the SC1 group can be costrelled between

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and anzimum with FIC 3C2. The renaising groups will be either full on er full off.

4.2.4 Ubem pressuriser pressure exceede 50 pois, besia venting microgen to the quench tank by throttling RC 147. Operate pressertser heaters as necessary to maintain RCS pressure between 50 and 100 peig. Vesting can be stopped by closing BC 200 from the Control Room.

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~o NOTE: EarAy in the venting process most of the gas vented to the quench tank will be nitroten.

Manual operation j

(from control Roon) of RC 222 quench Tank Yeat to contaissent vent header will be required to keep queneh tank pressure below 50 pais. As the venting process contiouse, level and temperature control of the quench tank will be required to handle the con-densed steam.

4.2.5 Throttle A.114 or close RC 200 as necessary to keep quench taak pressure below 50 pais.

4.2.6 Cycle the pressurizer

• beaters to maintain RC3 pressure be-tween 50 and 100 peig. The SCR controlled heaters esa be used for fine pressure control.

4.2.7 Open RC 240A and RC 2403, Pressuriser Sample Line contain-mest Iselation valves from the Control Room on $yAS Fanel C3717 use switches HIS 240A and HIS 2403, to Reactor Sample System Fanel C 1705. C&BF will periodically sample the g=

pressuriser vapor space.

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4.2.4' When venting is complate. perform the following:

9

.1.

Clo.se RC.147, Pressuriser vent Throttle valve

'*~

2.

'O Close RC 240A and RC 2603.' Pressuriser Sample Line Con-tainamat Isolation Valves, from the control tooe.

M*

1 3.

Close RC 200. Pressuriser Vent Line Isolation Valve to l

=..

CDE Vent Header, from the Control Roos.

Q?*'

4.

. h*;',

Close RC 239A. Pressurizer vapor Sample Isolation valve.

from the Control Room.

i,S.,*

5.

..o Close RC 144, Pressuriser Yeat Line to Nesch Tank.

(',$3',.

4.2.9 Continue reactor ecolant pressurization in accordance with

...t FF 1102.02, Plast Startup Procedure.

)

4.2.10 Flace the pressurizar level indicator controller (LIC-AC14) in i

automatic mode and adjust the setpeint for 75 inches.

t NOTE: Setpoint vt31 be tacreased as necessary as per FF 1102.02, plaat Startup Procedure.

4.2.11 When the Reacter Coolant System reaches approximately 1900 I

pois, place the pressE,21 er heaters and spray valve in auto-metic mode.

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For heaters: Flace switches HIS-AC2-2. 2-3 and 2-4 La A7t'3 for heater banks 2, 3 and 4.respectively; and w&

ELR2A 4 A to "AUT0" for heater banks 2A and 25 and place M

r w ic2 a auro for sCR be.ters.

g 2.

For pressurizee paray place switch HIS-AC2 1 in AUTC poei-

~.ia%

P!h45 NOTT,3 All switches above located in Control Room on h

Fanel C3705, lett console.

4.2.12 Cheerve that the heater banks shut off when they reach their M

~

respective setpoints: (This will be indi ated by the "CN" or N'

"0F7" lights ou their respective switches) See Enclosure 7

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M Seattaa 4 Completed Date N

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Il0RMAL OFDtATTON

=3 4

3 1

1 Signeffar ars not required for this section.

5.1 Prerequisites 3.1.1 Quench Tank in operation in accordance with sP 1103.17. Quench S

e-Taak Operating Proc.sdure.

-~

d 3.2 Procedure

---g 3.2.1 cbserve that the pressuriser heater bank automatic coac[el k

operates at t.he setpointa listed on Enclosure 7 of this procedure.

MM k'

S.2.2 Observe than the presearizar spray valve (20 2) automat 14 n

control operates at the seapoints of 2205 pois valve opens and 2135 pets valve clones. The "0N" and "0FF" lights on g

switch Els RC 2-1 will indicate proper e,wacation of autoestic h

essere1.

?

-3 3.2.3 At least once e day check relief valve 412 charge line tespera-wa

~

ture lastrumentation using computer psir.ts T770 and T771 for y#

indicatioc. of valve seat leakage through FW RC 13A and.M 13R.

respectively.

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31' 1103.05.1 h

l 5.2.4 Sample the pressurizer steam space and unter space wovkly.ns 4

per Nuclear Areas Sampling Procedure. 17 1104.10 Section 5.2.11.

If C&HP has determined that the pressuriser needs to be vented due to excessive non-condensablee in the pres-aurizer steam space. vent by one of the following methods.

i There are two acceptable methods for venting the presserizer.

lC The preferred method la to vent the pressurizer to the RC k*

Drain Tank through the Sampling System. The alternate k

method would be to vent the pressurizer to the Containment E

Vent Header using the pressurizar quench tank.-

Method f - ventine Pressurtzer to 1C Oratrf Tank 1.

Open sample syscan return Laolation valve to RC Drain Tank, ss 303 u

2.

Opea pressurizer sample line tsofacion valves, RC 240A and RC 2605 from the control room panet C3717 (STAS) using switches HIS 240A and IIS 2405, respectively.

p i

3.

Open pressuriser vapor sample valve RC 239A from the control room.

panet CS705 Left console, using switch HIS 239A and v=nt to the letdown.

s@

)~..;..

line by the normal sampling rectre path - SF 1104.10 (Sample system Nuclear Areas saepting Procedure).

4.

Vent contisuously until C&HE has deter:sined non-condensable lases have h

been removed.

4 5.

When venting is completed, return all valves back to normat:

E Close 33 40s BC 240A, RC 2405 RC 239A.

y~

k Method IT - Ventine Pressurtzer to Containment Vene Header w%

W 1.

Opea pressurizer vent to cont =f n= mat vessel head RC 200. and pressurizer vent to quench tank RC 146.

e I

rw Q'

t 2.

Close annual isolation valve RC 193 for Containment vent header. and R

pressuriser vent throttle valve RC 147.

"G 3.

Opea pressuriser vapor sample v tive RC 239A from control Room on be Fanel C3705, left console, usina switch HIS 239A.

g

,e 4.

Open slowly pressuriser vent 1.h! ottle velve RC 147.

5.

Vent continueuely to quench tank untti C&HP has determined nonconden-cM sable gaaea have been removed.

vest header using RC 222.

Vent from <tuench tank to containment Do not exceed design pressure *of CTRM Vent Header (50 psig) b CADTION:

Monitor pressuriser quench tank for proper level, tosperatures

[

and pressure control.

em RE 4.

When vesting is completed, return all valves back to normal ihb 1

-- - -- " ~ ~ '

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m):Q SP 110"J.05.0 13 l

i 5.2.5 Equalize the boron concentration in the pressurizer with the RC Systan whenev6e there La a difference of greater than 30 i

ppe baron concentracion BOTE:

During normai coerations, the concentr:. tion of beric acid in the pressurizar water compared to RCS is not expected to be a significant problem beesuae the beric c

acid la the reactor coolant changes slowly with time i

and there is a conti:msous flow of about 1.5 C7.4 through the spray 11re allous water to recirculate slowly between the gressurizar and the main reactor coolant strees.

The problem is expected to be more critical during startup from a cold condition (especially af ter m

refueling) wtten the horic acid La the coolant is M

rapidly changed.

During such periods, the spray flow abould be increased so that the race of rectreulation is increased.

should be made once a week.During normal operations, an analysin During startup periods, an analysis should be performed when the reactor la critical and once every shif t thereafter for several days.

1.

Open pressurizer spray valve RC 2 from control room using switch MIS AC2-1.

CAUTICN: Continue to spesy, as long as pressurizar heaters are able to maintain RCS pressure near normal operating pressure (2155 peig)

~ 2.

Continue pressurizsr spray until at least one volume of the This will take about 30 minutas to completa at a pressuriz h

spray flow of 160 Cat.

y-3.

Stop prassurizer spray and allow pressurizer pressure and level to settle out and then have C&BP take another samp1t.

12 boron concentration of pressurizar and RCS La not withic

• 30 pps repeat steps 1 and 2 ur.til the limit is reached.

4 After pressurizar and PCS boron concentration is equalized, ensure back to normal (180" acid 2155 psig). spray valve is La " Auto" an e

S.2.6 ladications of duplicato primary elements and readout devices should be checked each shift, as per STS 4.t. 4, surveillance seguirements, which states: The pressurizar level instrumentation shall be demonstrated operable at least once every 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />; performance of a channel check.

s

?

scII:

These will be checked by liiscellaneous Instrumsaration Shift check procedure. ST 5019.03.

3 5

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DEPRES3tmIZATION ($mfrDCWN/C001.DOWM1 l

2his meet. ion will be used La conjunction with 37 1102.10 Plant Shutdown and Cooldown.

6.1 7.

_.-8 ites

_ 4.1.1 The reactor coelaas systen is in a hot standby condition as per j

Plana shutdown and Cooldous Proceduret. 37 1102.10 Section 4.0.

_ 6.1.2 P,ressuriser has been desansed prior to cooldown and depressurisation as per Eydrogen Addition.md Degasification Procedure. 3F 1102.12 J

Session 7.0.

L lacrE Degaesing may be n.seded during cooldown.

i 6.1.3 Pressuriser level indicator controller G.IC-RC14) is in Automatic and set to amintata level at 220 inches.

l 4.1.4 Pressuriser spray valva RC 2-1 La in automatic.

I 4.1.5 Pressuriser heaters are in Automatic maintaining normat operating pressure.

6.2 Procedure

" ' 'H6tIi"Use in comjunction with Plant shutdown and Cooldown Procedurs, i

FF 1102.10.

6.2.1 De-emergise all pressuriser heaters by turning the following sw.t.has'to "Off", located in the control room on panet C5705, left console:

l'.

Place MIS-RC2-2 to off for Heater Bank 2 a-2.

Place M13-AC2-3 to off for Hester Bank 3 3.

Place mis-EC2-4 to off for Raster Reak 4 4.

Place MIS-RC24 to Off for Essential Heater Croup 1

-y Placa E13-RC2B to Off for Issential Esater Croup 2

[ 3.

6.

Flace PIC-EC2, Pressure heater Control for SCE Heater Bank, 1

La Hamual and reduce setroint to zara.

4.2.2 Mammally esatrol the pressurtsar spray valve RC-2, to cool the pressuriser, by turning a.oattel switch HIS-RC2-1 to the "on" peettion, is the control roses os panet C5701. Left console. Cyste the pressuriser spray to sair.cain a coeldown rate se per pressure ve temperature limitations for cooldown, Figure 2 of 3333 Listes and Precautions, FF 1101.01.

6.2.3 Moultor ECS pressure on RCS wide range recorder RC 2A1 or RCS low reage pressure indicator F1-RC2A6 and pressuriser temperature on T1 RCIS tocated ce panet C5705. Left console.in the control rose. Plot the data on RCS pressure vs temperature limitaticas surve. Eastosure 3.

100II: Heaters any be rensergized to asistata pressure, but should not be required.

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6.2.4 Maintain pressurizer level at 220 inches to ensure sufficient 1

Reactor Coolant Volume is available for contraction during E

cooldown.

i i

l.

,,,,,,,,,, 6. 2. 5 If required during cooldown to 280 T, vent the pressurizer through 8

5 the sempting systes line to the reactor coolant drain tank.

g for venting pressurizar toCampleta step 5.2.4 Method I of this procedure, 9.

s the reactor coolant drain tank.

I

_ 4.2.6 13 hen the RC systes pressure is between 350 psig and 600 psig i

E slowly begin to de.:rease pressurizar to 60 inches by lowering j'

the 'setpoint on prussurf.zer level indicator controller (11C.RC14) h os panel C5705, left console.

{

I Nort:.This will a'. low for the removal of the large volume of hot c

down of RCS and pressurizer before decay heat rem M[

initiated.

I 9

i 6.2.7 Continue to decrease RC3 pressure to 350 psig by spraying i

1 the pressurizar as necessary by using Spray Valve RC-2 and while

'f gg

=*=*=*=*=g pressurizar level at 60 inches.

6.2.8

a--% to decrease the RCS pressure to less than 310 psis, by increasing spray flow if necessary to a' llow Decay Heat Removal systasa to be placed in service.

m 6.2 9 Place pressurizar level indicating controller (LIC-RC14) in manual

[g o

on panel C5705, left console, and estahtish a 25 inch per hour Lac-Ec14 on panel C5705, left console. increase in pressuriza N

f 6.2.10 lihan the Decay Beat Esmoval System is in operation and Reactor 9

g coolant pumps are shutdown, close pressurizar spray valve RC2, using switch EIS-Ac2-1, on panel C5705, left console.

O E

6.2.11 IIS 2735, on panel C5705, left console.Opea pressuriser auxilia Q

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I

_ 4.2.12 Slowly open the auxiliary spray throttle valve OR 2736, using it switch EIS 2736 on panel C5705, left console, to the pressurizar

[

antil a camperature ince tase in the pressurizer surge line is I

detected as read on congr. ster point T775.

Adjust the auxiliary spray throttle valve (in the close direction) until the temperature j

returns to its previous value.

{

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l NorE:

Do not exceed a cooldown rate of 90*T per hour in the m

L pressuriser.

)

)

This spray adjustament is to prevent pressurizer outsurge Nort:

2r.

into the EC hot leg. The pressurizer surge temperature

{

should besmaitored closely throughnut the continuation of g

eoeldown.

If the surge line temperature increases again h

L adjust the auxiliary spray throttle valve (La the close direction) untti the temperature returns to its previous valve.

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SP 1103.05.1 i

16 6.2.13 when the RC Systes pressure is less than 125 poig, stop pressuriser level increase at 280 inches as rend on pressuti.

E ser level recordor LAS-EC 1-1 on Fanel C5705, lett console.

6.2.14 Whos the RC Systin is at 30 psig and less then 250'F. start adding nitrogen La the pressurizer while quenching the stesa y

bubble by comple:ing the following stepst.

3 III 1.

Ensure RC 243A, preneuriser sample line tsolation, saa'ple p

line isolatism, RC 200, pressurizer vent to containment 9

vent header, are closed.

Es f

2.

Open NN64. 32 System to pressurizer vent isolation valve.

1,,

3.

Throttle open RC 239A, pressurizer vapor phase sample f

line isolation from the Control Room on Fanel C5705, i

left console, using switch HIS 239A to asintain 25-30

[

peig in the pressuriser.

N CADTION: Nitrogen injected into the pressuriz'or must not decrease the injection nossle temperature more a

than 100*F.

i CAUTION: Spray valve operation with nitrogen in the pressuri.

j aar will require subsequent vesting of the RC j

System.

30TE: Maintain 25-30 psig nitrogen in pressurizer to main-j tain 36 inch hot les loop high point in solid water condition.

g C

NOTE: Preasu-izer level any be allowed to decrease from the I

O 280 inch level, but not to be allowed to go below 85 1

tn,h...

C 4.2.15 Continue cooldova of RCS to i 14087 by decay heat removal and Q

by coatinuing sprayi23 of the pressurizer. At 140 F RC System 8

temperature, cooldom is considered' complete.

Section 6 Complaced Date m

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CALCUIATTCM OF TD9TRATURE - CCMFCISAT!D PRESSURIZER t. EVE 1.

$5 7.1 It,is desirable to periodically check the pressurizer temperatures -

((

s*

In compensated laval indication (L13-14) against the prewourizer un-

• a-p='==ted level indications (M-RC14-3 and 1.I-RC14-4) and uncompen-E sated level computer points (1772, 773 and 774). Figure 1 gives the R1 conversion between compensated and ugeospensated level, assuming l

. the pressurizar temperature is 647.4 T (saturation temperature et y

.2155 pois) and the reference bT temperature is 68'F.

j 7.2 The pressurizar level t:ansmitters are c.alibented to read correct level when pressurizar 9ater and ref erence les unter temperatures are l

63*F with nitrogen pres sure in the preneurizer at 60 peig. Using y

this information, the fillowing equation can be developed:

I I

- (320 -X) 1 320 IUNC = 320" - 62.13 V ref ies V

V steam HgG pressurher W Mcapn b hches.

33 uhare b C u cogensat Y ref les is the specific volume of unter in the transmitter 3

reference less in f1/lb 1 is the actual (compensated) pressurizar level in inches, and C

3 V" 0 is the specific volume of unter in the pressurizar in ft /lb N

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Eddettfication No.

RC 2 BC 10 RC 11 BC 139A AC 200

.tc 240A kC 240s rc 239u I

Equipment Pressuri-Pressurt-Pressuri-Pressuri-Press Sam-tress Sam-Press Saar-Fress Liqui.

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ser Spray ser Spray ser Power ser vapor pie 1.ine to pie I.ine pie IJae itaana Sampt Equip oat lias a Valve Iso Valve Relief Iso Phase Samp-CTIK Vent Iso Viv Iso Valve Iso V:alve I

Umlwe le fan Ulv ILlr Ulu I

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Control Room MIS-RC2-1 IIIS-EC10 IIIS-RC11 IIIS-RC239A lits-AC200 IIIS.C240A lits-RC2408 Ills-8C219s q

Switcle/Panal i C5705 C5705 C5705

• C5705 C5705 C5717 C5717 C5705 g

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control sonu Switch Haano (later)

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5 F21 08 M F21 09 8 F21 14 5 Fil 26 h F21 20 m Ell 31 3 Fit 2N t sell 27

4. HQ:

F-flA F-214 F-2IA i'-llA F2]A

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• I w' 58$.Co ter*Penet Room Cooler 585 5t:5, reput Roon renat I:oom P

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Area 7 603' Area 7 Area 7 Arcs 8 603' Area 7 60l'Arca 7 s

g.cgg 585 Area 7

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IN RC 2-1 NV RC 2-1 NV AC 11 NV AC 239A IN-RC 200

1. 1. Rd 240A ifV-EC 2405 fN-s.C 2395 k

Iscal Contrel at HCC at hCC At th'C at !**C at IfCC at Ib'c at HCC at la*C i

p Switch No.

F 21 A F2tA F21A Fila F2lA Ella Fila Fila S. A. Signals Nona Hone lione lione Eno SA 271C SA 2720 Non.i c

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SP 1103.05.1 20 P3133URIZER HEATER PCUER SUPPLIES PBZR HTR PANEL HEATER BANE MCC BRXR $0.

BRXR/SVTTCH PZR HTR 72C 34 2 7 62 RF 6203 3PH4-05 L3-4 SCE Controlled East Hall #2 Elec-BPHA-06 L3-7 Heater Bank trical Penet.ratica BP!4-08 L3-4 Roos 3C Pressurizar E61 BE 6102 BPM-01 U3-4 l

• ~

• Bank 2 Heater East Hall 8! Elec.

BPH3-02 U3-5 j

p.-..

trical 7enetration BPH3-03 U3-6 8

Boon BE 6103 BPM-05 U3-7 SPH5-06 U3-8

==

BPH3-08 U3 9 D4 BE 6104 BPH5-0.9 UB-10 3PHS410 U3-11 BPES-11 UB-12 O

Pressurizar Essen

1. 1 Low Voltage BE 1223 3E 1213 US-1 g

Heater Bank 1 Switchgear Boom BE 1214 U3-2 BE 1213 UB-3

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i

• f '.'.'

3C Pressurizar E62 BE 6202 3PH3-01 US-13 h

Bank 3 Heater East Wall #2 Elec-3PH3-02 M3-1

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. g, ;.

trical Penetration BPH3-03 MS-11 l

...v Room

• /g. !

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• BE 6203 3PH3-05 MB-2

• 3, BPU-06 MB-3 BPM-08 MB-4 BE 6204 BPM 3-09 MB-5 3PH3-10 MB-6 BPM -11 MB-7 3b P61 3F 6102 BPH6-01 MB-4 East Wall #2 Elec-BPH6-02 M3-9 trical Penetration BPH6-03 MB-10 Room INCLOSURE 2 Page 1 of 2 I

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EEATER 3AME MCC BRK1 NO.

BBX2/SUITCH PZI. MTR E'

h RC Pressurizar F-41 RF 6103 SPH6-06 MS-12 Bank 4 East Wall d2 Iles.

BFH6 08 MR-13 h

trical Penetra tion toom E

s' RF 6104 BPH6-09 L3-1 O

RPH6-lO L3-2 g

c F-42 3F 6202 3PH4-OL L3-3 East Well d2 Elec-SPH4-02 L1-4

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• t 22 SP 1103.05.0 b

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YALVE YER FICATICM LIST A

SP 1103.05.0 g

Enetosure 6 Procedure :*o.

of 2 t

i Pressurizer (Normal Cperation)

} *.

• Yorificattoo List only - Consult shift foreman Prior to Repositioniss Valve M-030 P&ID No.

VALVE VALVE VIIIT5 g

VALVE DESCRIPTION Coord.

NUMBER POSITICNl ST j

l 1

Purge Line Drain Isolation D-6 RC 55 Closed i

PurIe Line Drain Stoo Valve D-4 RC 56 Closed 1-

?

Presesrizer Soray Hesder Inlet Manual Tso E-8 RC 48 Coon h

<*Pressurizar Sora= Valve 38 RC 2 Closed Normallyl

,<-Pressurizer Mini Flow B-8 RC 49 Throttle <l r

~

Pressurizar Spray Motor Isolation B-7 RC 10 Open WdFid

' Pressurizer Spray Edr outlet Manual Iso B-7 RC 50 Open M

'Preneuriser Spray Valve Bypase 5-7 RC 262 -

Closed e

I Spray.Line Pressure Test Connection 3-9 BC 2841 Closed l

2 GC

-' Pressurizer Electromagnetic Relief Iso A-3 RC 11 Open E

N

'Pressurizar Electr===Tnatic Relief A-3 RC 2A Closed t.m -h

Pressurizer vapor thase Sample Line Iso 5-2 RC 239A Closed

'Pressurizar Liquid Phase Sample Line Isolation C-2

~

RC 2393 Closed Bressurizar Sample Line vent Valve 5-2 RC 32 Closed d' Pressurizer Smole Line Isolation 3-2 RC 240A Closed

'Preseurizer Sample Line Stop Valve B-1 RC 2408 Closed 3e Pressuriser. Sample Line Drain 3-1

~ RC 53 Closed W

a l

"Preescrisar Sample Line Drain 51 RC 54 Closed

=

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Pressariser Vent to Containment Vent Mea ter A-2 RC 200 Closed it-040A,

-=

"$ urge Line Drain to RC Drain Tk Edr 3-10 RC 87 Closed

. =

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• 1hressurizar Vent to Ctat Vent Bdr J-3 RC 82 4 Pen I

Treeserizar Level Instruments: ion Source C-4 RC 14A open l

.freeeurize:'Lsvol Instrumentation Sourse C-4 RC 145 Open

<= Pressurizer Level Transmitter LT-RC14-2 C-4

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F

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15

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2-i' Tarification List Only = Consult Shtfe Ferman Prior to Repositioning Valve p

M-030 P&ID No.

VALVE VALVE E31n VALVE DESCRIPTION

'Coord.

NUMBER

. POSITION BY S'

E Pressurizar Level Insertwentation Source C-4 RC 14C Open c

h Pressurizar Level Instrumentation Sourca C-4 RC 140 Open l

2 1

Pressurizar Level Transmitter LT-RC14-3 C-4 Service I

b Pressurizar Im1 Instrumentation Sourcs

• B-4 RC l'E Open l

1. _ _,. Pressurizar Level Instrumentation Source 3-4 RC 14F Open l

$a l

Pressurizer Level Transmittar LT-RC14=1 3-4 Service ta Press vapor Space Pressure Transmitter PT-412 3-4 Service N

H2 Supply to P21 Vent Iso Velve B-3 fat 64 Closed g

P21 Vent Line Drain Viv to CTMr Vent Hde A-3 RC 148

, closed 9

l PZ1 Vent Line Drn valve to CT2C Vent Edr A-3 RC 146 Closed l O

P21 Vent Line Vent Viv to CTMF Vent Edr A-3 RC 145 Clo sed PZ1 Vent Line Throttle Viv to CTMr Vent Ede A-3 RC 147 Throttle'd

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27 SP 1103.05.0

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ENCLOSURE 7 t

PRE 33URI::Z1 SETPCINT

{ g DIACRAM PRESSURE SE!P01:43 LEVEL SETPOI:C3 E

AS READ CM PBS RC2A1 AS READ C3 LAS RCit.

a 2500 Pressurizar Safety valve Open 327 -' Upper Connection for E

Level Transmitter E

pfl l

2450 Pressurizar 3afety Valves 3i0 --Maxianus Level Indication i

g,,

2255 -- Electromagnetie talief valves open 275 --Rish-Rish Level Alara g

Ai G

2205 - Elsetromagnetic Relief ';alves closes 220== Righ Lavel Alarn T

)

. Spray valve Opens b

O 2135 Spray Valve Closes Normal Operating 180 -- Normal Operating Lavet g

Pressure. Easter Bank 2 goes CFF

-=

2140 Heater Bank 3 sees off 160 -- Low level ' alarm i

Fe 2135 Easter Bank 2 goes on O

iE E

3 2225 Easter Sank 4 goes off.

40 -- low-tow Level Alarm c:: '

Pressurizar heater w

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