Text

Proposed Tech Specs Conservatively Restricting Required Actions Completion Time to Close All Containment Penetrations Providing Direct Access from Containment Atmosphere to Outside Atmosphere
	ML20199D039
Person / Time
Site:	San Onofre
Issue date:	01/13/1999
From:	; SOUTHERN CALIFORNIA EDISON CO.
To:	;
Shared Package
ML20199D024	List: ML20199D019; ML20199D033; ML20199D039;
References
	NUDOCS 9901190270
	Download: ML20199D039 (51)
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NPF-10/15-458 ATTACHMENT "A" EXISTING SPECIFICATIONS UNIT 2 l

l l

l I

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9901190270 990113 "

PDR ADOCK 05000361 P

PDR.

SDC and Coolant Circulation-High Water Level 3.9.4 3.9 REFUELING OPERATIONS 3.9.4 Shutdown Cooling (SDC) and Coolant Circulation-High Water Level LC0 3.9.4 One SDC loop shall be OPERABLE and in operation.

NOTES---------------------------

1.

The required SDC loop may be removed from operation for s I hour per 8 hour9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months period, provided no operations are permitted that would cause dilution of the Reactor Coolant System boron concentration.

2.

A containment spray pump may be used in place of a low pressure safety injection pump to provide shutdown cooling flow.

APPLICABILITY:

MODE 6 with the water level 2 23 ft above the top of reactor vessel flange.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

SDC loop A.1 Suspend Immediately requirements not operations met.

involving a reduction in reactor coolant boron concentration.

ARD (continued) l i

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i SAN ON0FRE--UNIT 2 3.9-6 Amendment No. 127

SDC and Coolant Circulation-High Water Level 3.9.4 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

(continued)

A.2 Suspend loading Immediately irradiated fuel assemblies in the core.

eM1 A.3 Initiate action to Immediately satisfy SDC loop requirements, bE A.4 Close all containment 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months penetrations providing direct access from containment atmosphere to outside atmosphere.

1 i

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.9.4.1 Verify one SDC loop is in operation and 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months circulating reactor coolant at a flow rate of 2 2200 gpm.

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SAN ON0FRE--UNIT 2 3.9-7 Amendment No. 127

... _ - ~ _

SDC and Coolant Circulation-Low Water Level 3.9.5 3.9 REFUELING OPERATIONS 3.9.5 Shutdown Cooling (SDC) and Coolant Circulation-Low Water Level j

l LC0 3.9.5 Two SDC loops shall be OPERABLE, and one SDC loop shall be in operation.

NOTE----------------------------

i A containment spray pump may be used in place of a low pressure safety injection pump to provide shutdown cooling flow.

APPLICABILITY:

MODE 6 with the water level < 23 ft above the top of reactor vessel 'lange.

?

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

One SDC loop A.1 Initiate action to Immediately inoperable.

restore SDC loop to OPERABLE status.

l QR A.2 Initiate actions to Immediately establish 2 23 ft of j

water above the top i

of reactor vessel l

flange.

B.

No SDC loop OPERABLE B.1 Suspend operations Immediately or in operation.

involving a reduction in reactor coolant boron concentration.

ARQ (continued) l r

SAN ON0FRE--UNIT 2 3.9-8 Amendment No. 127

SDC and Coolant Circulation-Low Water Level 3.9.5 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME B.

(continued)

B.2 Initiate action to Immediately restore one SDC loop to OPERABLE status and to operation.

AND B.3 Close all containment 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months penetrations providing direct access from containment atmosphere to outside atmosphere.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.9.5.1 Verify required SDC loops are OPERABLE 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and one SDC loop is in operation and circulating reactor coolant at a flow rate of 2 2200 gpm.

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SAN ON0FRE--UNIT 2 3.9-9 Amendment No. 127 i

1

-. =.

NPF-10/15-458 1

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l ATTACHMENT "B" EXISTING SPECIFICATIONS UNIT 3 l

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SDC and Coolant Circulation-High Water Level l

3.9.4 3.9 REFUELING OPERATIONS 3.9.4 Shutdown Cooling (SDC) and Coolant Circulation-High Water Level LC0 3.9.4 One SDC loop shall be OPERABLE and in operation.

NOTES---------------------------

l 1.

The required SDC loop may be removed from operation for s I hour per 8 hour9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months period, provided no operations are permitted that would cause dilution of the Reactor l

Coolant System boron concentration.

l 2.

A containment spray pump may be used in place of a low pressure safety injection pump to provide shutdown cooling flow.

l APPLICABILITY:

MODE 6 with the water level 2 23 ft above the top of reactor vessel flange.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME 1

l A.

SDC loop A.1 Suspend Immediately requirements not operations

met, involving a reduction in reactor coolant boron concentration.

1 m

(continued) l l

l t

SAN ON0FRE--UNIT 3 3.9-6 Amendment No.

116

SDC and Coolant Circulation-High Water Level 3.9.4 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

(continued)

A.2 Suspend loading Immediately irradiated fuel assemblies in the Core.

AND A.3 Initiate action to Immediately satisfy SDC loop requirements.

bE A.4 Close all containment 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months penetrations providing direct access from containment atmosphere to outside atmosphere.

SURVEILLANCE REQUIREMENTS SURVE!! LANCE FREQUENCY SR 3.9.4.1 Verify one SDC loop is in operation and 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months circulating reactor coolant at a flow rate of 2 2200 gpm.

l l

SAN ON0FRE--UNIT 3 3.9-7 Amendment No.

116 I

SDC and Coolant Circulation-Lou Water Level 3.9.5 3.9 REFUELING OPERATIONS 3.9.5 Shutdown Cooling (SDC) and Coolant Circulation-Low Water Level LC0 3.9.5 Two SDC loops shall be OPERABLE, and one SDC loop shall be j

in operation.

i

NOTE----------------------------

A containment spray pump may be used in place of a low pressure safety injection pump to provide shutdown cooling

_I_______________________________________________________

APPLICABILITY:

MODE 6 with the water level < 23 ft above the top of reactor vessel flange.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

One SDC loop A.1 Initiate action to Immediately inoperable.

restore SDC loop to OPERABLE status.

DE A.2 Initiate actions to Immediately establish 2 23 ft of water above the top of reactor vessel flange.

B.

No SDC loop OPERABLE B.1 Suspend operations Immediately or in operation.

involving a reduction in reactor coolant boron concentration.

MQ (continued) l l

SAN ON0FRE--UNIT 3 3.9-8 Amendment No.

116

.. ~ -

. - ~.

SDC and Coolant Circulation-Lou Mater Level 3.9.5 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME i

B.

(continued)

B.2 Initiate action to Immediately restore one SDC loop to OPERABLE status and to operation.

AliQ B.3 Close all containment 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months penetrations providing direct access from containment i

atmosphere to outside l

atmosphere.

l SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.9.5.1 Verify required SDC loops are OPERABLE 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and one SDC loop is in operation and circulating reactor coolant at a flow rate of 2 2200 gpm.

b SAN ONOFRE--UNIT 3 3.9-9 Amendment No.

116 i

NPF-10/15-458 1

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ATTACHMENT "C" REVISED SPECIFICATIONS UNIT 2 1

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I

SDC and Coolant Circulation-High Water Level l

3.9.4 3.9 REFUELING OPERATIONS l

3.9.4 Shutdown Cooling (SDC) and Coolant Circulation-High Water Level l

LC0 3.9.4 One SDC loop shall be OPERABLE and in operation.

N0TE-------------------------_--

W1thitheupper,gui.de/structurefrssoieffromLthe'reactar vessel.;the required SDC loop may be removed.from operation for s + 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months per 8-hour period, provided no cperstions

&re permitted that,,culd cause dilution of the REactcr j

Ccciant Sysica bcrca ccaccntrstion.

a.'

The' maximum RCSitsmp5rithre is/ma'ihtsined s 140*F.

~

t' b.

No o)erations{areLpermitted1that;would'cause a reduction ofktie:1RCS boronicconcentration; c.

Thef capabilityito closeL:the[ containment? penetrations withidirectiaccessLto the'o.utsideratmosphereiwithin the cal cul ated : time i tol bo11 Hi s :; mai nt ai ned.

' ds The?reactoricavityLwater;1 eve 151s maintainedV20 feet aboveithettop ofsthe reactor pressuref vessel Lflange,;or, for.-core alterations, N 232feetlaboveitheatopfof the t

rea c tor.:l pre s s u re ; v e s s el -l fl a ng e.

________________________----NOTE----

A containment spray pump may be used in place..of._a. low pressure saf.ety injection pump inleitherL r'both shutdown 0

coolingfloopsito provide shutdown cooling flow.

APPLICABILITY:

MODE 6 with the water level 2 E3 2D f t above the top of the reactor vessel flange.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

SDC loop requirements A.1 Suspend operations Immediately not met.

involving a reduction l

in reactor coolant boron concentration.

s' i

MQ (continued)

SAN ON0FRE--UNIT 2 3.9-6

'imendment No. t27

l SDC and Coolant Circulation-High Mater Level 3.9.4 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

(continued)

A.2 Suspend loading Immediately irradiated fuel assemblies in the Core.

AE A.3 Initiate action to Immediately satisfy SDC loop requirements.

AE I

A.4 Close all containment 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months or penetrations within:the providing direct calculated time access from to; boil',

per (

4 containment whichever11s atmosphere to outside less atmosphere.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.9.4.1 Verify one SDC loop is in operation and 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months circulating reactor coolant at a flow rate of 2 2200 gpm.

l l

l SAN ONOFRE--UNIT 2 3.9-7 Amendment No. 407

SDC and Coolant Circulation-Low Water Level

~'

3.9.5 3.9 REFUELING OPERATIONS 3.9.5 Shutdown Cooling (SDC) and Coolant Circulation-Low Water Level LCO 3.9.5 Two SDC loops shall be OPERABLE, and one SDC loop shall be in operation.

NOTE----------

A containment spray pump may be__used in pi -* R a low pressure safety injection pump in either orabw,4:tdown co'olin61oopssto provide shutdown cooling flow.

~

6r 0heiloop' ; Eof 0s hu't'downi co611 ng i shal.1 [ bei OPERABLE l and opera t'i ng

~

uader the;.following conditions:

1)

The1 reactor hasibeenTs.hUtdowniforLatlleast1.6j; days '

t 2)

The WaterLl'evellabove; the' reactor vesselfflangefis 12

~

e feet or greater; 3)

The L as soci atsd fl oop t of[ Sal t3 Wa t e r[ Cool i ng f (SWC) l i s OPERABLE;andLoperating.

4)l The^: associated C6mponent"Coolirig; Water!(CCW)*pumpland the CCW-swing pumpl:are OPERABLE,;and1thel associated CCW l oo p;;;i siOP ERABL E ; a ndiope ra ti_ng.

5).

The Shutd6wnTC6 cling': sistiemfis?bperating using :the 7

conta.inmentispray" pump #a'ndithe.associatedhigh; pressure j

safetytinjectionipumplandithe low. pressure safety-injection pump.are:0PERABLE: and;:at/ambienti: temperature, avail abl e ; forc inj ecti on; fromi the :' RWST.

6)

Th6fRWSTicon'tainsthevolumeofwaterretjuiFedt'oraise

~

theilevely to120:Lfeet aboveithe: reactor vessel lfla'ge.-

n 7)

Th'elassociatediEmergency; Diesel Generator isiOPERABLE.

8)

The wateritempeFatsrefof Lthe SDCfs'ystem is Lmaintained less than.il20"F; l

APPLICABILITY:

MODE 6 with the water level < M 20 ft above the top of reactor vessel flange.

SAN ON0FRE--UNIT 2 3.9-8 AMENDMENT N0. 4W

l SDC and Coolant Circulation-Lou Water Level 3.9.5 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME l

A.

One SDC loop A.1 Initiate action to Immediately inoperable.

restore SDC loop to OPERABLE status.

(ApplidableitoTiriitial l

conditionsiof? twos l shutdown DR cooling (loopp0PERABLE)

A.2 Initiate actions to Immediately establish 2 03 20 ft of water above the top of reactor vessel l

flange.

B2 One SDC-lbopTo'perhble!

Bil Isitiate?adtionsits Immsd.iately i

lessithan;20? feet water'aboveithe~;of establish ij.20 sfeet ofbinater; l

reactorLvesselsflange

~~ ~~

andianyjofsthe!81...f requirementsjnoti. met.

'(Applicabiesisfisitial' conditions 'of onelshutdowri

[

coolingiloopLOPERABLEland ~

operating with

requirementsilh8);

i BC. No SDC loop OPERABLE BC.1 Suspend operations Immediately or in operation.

involving a reduction l

in reactor coolant boron concentration.

EEQ t

(continued) l l

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I SAN ON0FRE--UNIT 2 3.9-9 AMENDMENT N0. 4W l

l ls SDC and Coolant Circulation-Low Water Level 3.9.5 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME t

BC.

(continued)

BC.2 Initiate action to Immediately restore one SDC loop to OPERABLE status

)

and to operation.

l AtiD BC.3 Close all containment 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months or penetrations within the providing direct calculateditime

'gyr >

access from to: boil,.. -

containment whichever i.s atmosphere to outside less atmosphere.

I SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.9.5.1 Verify required SDC loops are OPERABLE 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and one SDC loop is in operation and circulating reactor coolant at a flow rate of 2 2200 gpm.

l i

SAN ON0FRE--UNIT 2 3.9-9a AMENDMENT NO. 4W

NPF-10/15-458 l

ATTACHMENT "D" REVISED SPECIFICATIONS UNIT 3 4

I I

SDC and Coolant Circulation-High Water Level 3.9.4 3.9 REFUELING OPERATIONS 3.9.4 Shutdown Cooling (SDC) and Coolant Circulation-High Water Level LCO 3.9.4 One SDC loop shall be OPERABLE and in operation.

NOTE----------------------------

With/th'si;uppstiguide:~stsucture: removed:;from thei reactor vessel :the required SDC loop may be removed from operation for s + 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months per 8-hour period, providedi no opersticas arc permitted that wculd csusc dilutica of the "eccter C00lant4 ystem bcrca concentratica.

a.'

Ttis maxidiumiRCS[;temJeraiurs: Tis"ma'intainsd 5140"F.

~

b.

No; operations; are;; permi tted : thatzwould cause;aL. reduction of:sthe RCSfboroniconcentration.6 c.

The capability-to::close theicontainmentipenetrations.

with< direct:.: access:to-theioutside atmosphere within'the calculated time 5tolboiliis maintained..

(;

Thej. react _or:cavf tyMaterilevellis maintainsd 2 20 feet above1thestop;of?:thefreactor: pressurefvessel flange, or; for1 core:fal terations,12 ;23ifeetj above' thea: top. of L the reactorJ pressure;: vessel $fl ange.

NOTE----------------------------

A containment spray pump may be used in place of a low pressure safety injection pump in eitherfor:both; shutdown coolingfloopsi;to provide shutdown cooling flow.

APPLICABILITY:

MODE 6 with the water level 2 E3 20 ft above the top of the reactor vessel flange.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

SDC loop requirements A.1 Suspend operations Immediately not met.

involving a reduction in reactor coolant boron concentration.

i (continued) f SAN ON0FRE--UNIT 3 3.9-6 AMENDMENT NO. 4%

l

SDC and Coolant Circulation-High Water Level 3.9.4 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

(continued)

A.2 Suspend loading Immediately

' irradiated fuel assemblies in the core.

E A.3 Initiate action to Immediately satisfy SDC loop requirements.

M A.4 Close all containment 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months or penetrations within-the providing direct calculated time access from to'. boil,

MI containment whichever'is atmosphere to outside less atmosphere.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.9.4.1 Verify one SDC loop is in operation and 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months circulating reactor coolant at a flow rate of a 2200 gpm.

l SAN ON0FRE--UNIT 3 3.9-7 AMENDMENT N0. H6 I

SDC and Coolant Circulation-Low Water Level 3.9.5 3.9 REFUELING OPERATIONS 3.9.5 Shutdown Cooling (SDC) and Coolant Circulation-Low Water Level l

LCO 3.9.5 Two SDC loops shall be OPERABLE, and one SDC loop shall be in operation, l

NOTE----------------------------

A containment spray pump may be.used in place of a low l

pressure safety injection aump fr,!"eithdr!oEb6th shutd6wn cooling 11 oops.ito provide s lutdokn~co61irkj flos. ~

05 One El ~oo'p]s) fol,.l owi.ng [condi ti ons i' ~i b"ET OPERABl.E offshutdossic6611iig-ashal'l

~ ~ " ~ " '

underith 1).

The[rsiffdrihi'i? 6deri{shsidosh [fsrTat$l ess fi6]daysi 2);

ThEl wit;ehl ssel[i66veltnilfiiitoF3es;sel[flinieliil 12 feet oggreater T6essisc'iitid(166pidflSaltiWaterlCo611ngi(SWC) Tis 3)l l

OPERABLElandfoperati_ng;;

i

$)'

Thiliisd6TifsdICdmpohe6EC661'il6fWaferI(CCW)3umpfahd.

theiCCWFswing?pumpiare?0PERABLET and,.the: associated CCW JoopMs10P.ER_ABLE2and[operatingy'~^~~

' ' ~ ' ^ ~ '

5)

ThsEShiid6iiriiC6olihjIsisfiinTis36perafing('usisi[th5_.._.

containment.3. spray;pumpnand thel. associated:high pressure safetyrinjectiontpump?and6the low'pressurefsafety _ _.

i nj ectionipumpiare::0PERABLE.and rat :: ambi ent s tem availablejforginjectioQromithelRWSTC ~ "perature, 6)~'

Thi RWST Id6Efii rii7thelol inie } 6f] witirfr'ei 0 i red ito. rai s e 1

the11evel[to;;.20 Meet.(above;the[reactonvessel flange.

7)

ThelassodfitediEmergencyiDiese.ljGeneratorfis OPERABLE?

8).

The~ witeFifempeFstUhe ?bf[fhs) SDC] sis temj i si mai rit ai nsd 1.essithan;120*Fj APPLICABILITY:

MODE 6 with the water level < H 20 ft above the top of reactor vessel flange.

SAN ON0FRE--UNIT 3 3.9-8 AMENDMENT N0. H6

=. -.....

.~.

~-

SDC and Coolant Circulation-Loc Mater Level 3.9.5 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

One SDC ltop A.1 Initiate action to Immediately inoperable.

restore SDC loop to OPERABLE status.

(Applicable;t:1 initial conditions oDtwo shutdown QH cooling: loops 10PERABLE)

A.2 Initiate actions to Immediately establish 2 a 20 ft of water above the top of reactor vessel i

flange.

)

l Bi One.'SDC[ Loop! Operable,-

BJ1 Initiats'aitionsito Immediately lessj::thanF20f fee.t;of establish :r 20.f t.~of water above!the water 1

reactdrive.ssElfflange andianyLofJthe 8. __

I requirements;notimet l

(Applicsbls.itolinit'f al' l

conditions:ofJoneishutdown cooling!1oopTOPERABLEland operating with l

requirements [1;-8) l BC. No SDC loop OPERABLE BC.1 Suspend operations Immediately or in operation, involving a reduction in reactor coolant l

boron concentration.

AliD (continued)

I i

I SAN ONOFRE--UNIT 3 3.9-9 AMENDMENT N0. H6 l

. -. -. -. ~.. -.

SDC and Coolant Circulation-Lou Water Level 3.9.5 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME BC.2 Initiate action to Immediately restore one SDC loop to OPERABLE status and to operation.

AE BC.3 Close all containment 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months shor penetrations Withindthe providing direct calculatedjtime access from to boil,.

N([(

containment whicheverjis atmosphere to outside l_ess atmosphere.

l l

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY I

SR-3.9.5.1 Verify required SDC loops are OPERABLE 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and one SDC loop is in operation and circulating reactor coolant at a flow rate of 2 2200 gpm.

i i

SAN ON0FRE--UNIT 3 3.9-9a AMENDMENT N0. H6

NPF-10/15-458 ATTACHMENT "E" REVISED SPECIFICATIONS UNIT 2 I

l

d SDC and Coolant Circulation-High Water Level 3.9.4 l

l 3.9 REFUELING OPERATIONS e

{

3.9.4 Shutdown Cooling (SDC) and Coolant Circulation-High Water Level LC0 3.9.4 One SDC loop shall be OPERABLE and in operation.

NOTE----------------------------

With the upper guide structure removed from the reactor vessel the required SDC loop may be removed from operation for s 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months per 8-hour period, provided:

a.

The maximum RCS temperature is maintained s 140 F.

b.

No operations are permitted that would cause a reduction of the RCS boron concentration.

c.

The capability to close the containment penetrations with direct access to the outside atmosphere within the calculated time to boil is maintained.

d.

The reactor cavity water level is maintained 2 20 feet above the top of the reactor pressure vessel flange, or, for core alterations, 2.23 feet above the top of the reactor pressure vessel flange.

NOTE----------------------------

A containment spray pump may be used in place of a low pressure safety injection pump in either or both shutdown cooling loops to provide shutdown cooling flow.

APPLICABILITY:

MODE 6 with the water level 2 20 ft above the top of the l

reactor vessel flange.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

SDC loop requirements A.1 Suspend operations Immediately not met.

involving a reduction in reactor coolant boron concentration.

&EQ l

(continued)

SAN ON0FRE--UNIT 2 3.9-6

SDC and Coolant Circulation-High Water Level 1

3.9.4 ACTIONS l

CONDITION REQUIRED ACTION COMPLETION TIME A.

(continued)

A.2 Suspend loading Immediately irradiated fuel assemblies in the core.

MQ A.3 Initiate action to Immediately satisfy SDC loop requirements.

MQ A.4 Close all containment 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months or penetrations within the providing direct calculated time access from to boil, containment whichever is atmosphere to outside less atmosphere.

SURVEILLANCE REQUIREMENTS l

SURVEILLANCE FREQUENCY l

SR 3.9.4.1 Verify one SDC loop is in operation and 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months circulating reactor coolant at a flow rate l

of a 2200 gpm.

7 SAN ON0FRE--UNIT 2 3.9-7

SDC and Coolant Circulation-Low Water Level i

3.9.5 3.9 REFUELING OPERATIONS 3.9.5 Shutdown Cooling (SDC) and Coolant Circulation-Low Water Level LC0 3.9.5 Two SDC loops shall be OPERABLE, and one SDC loop shall be in operation.

NOTE----------------------------

i A containment spray pump may be used in place of a low pressure safety injection pump in either or both shutdown cooling loops to provide shutdown cooling flow.

i

)

or One loop of shutdown cooling shall be OPERABLE and operating under the following conditions:

1)

The reactor has been shutdown for at least 6 days.

2)

The watar level above the reactor vessel flange is 12 feet or.. eater.

j l

3)

The associated loop of Salt Water Cooling (SWC) is l

OPERABLE and operating.

i 4)

The associated Component Cooling Water (CCW) pump and the CCW swing pump are OPERABLE, and the associated CCW loop is OPERABLE and operating.

l 5)

The Shutdown Cooling system is operating using the i

containment spray pump, and the associated high pressure safety injection pump and the low pressure safety injection pump are OPERABLE and at ambient temperature, available for injection from the RWST.

6)

The RWST contains the volume of water required to raise the level to 20 feet above the reactor vessel flange.

7)

The associated Emergency Diesel Generator is OPERABLE.

8)

The water temperature of the SDC system is maintained less than 120"F.

APPLICABILITY:

MODE 6 with the water level < 20 ft above the top of reactor l

vessel flange.

i 5

SAN ON0FRE--UNIT 2 3.9-8 1

9

o SDC and Coolant Circulation-Low Water Level 3.9.5 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

One SDC loop A.1 Initiate action to Immediately inoperable.

restore SDC loop to OPERABLE status.

(Applicable to initial conditions of two shutdown QR cooling loops ODERABLE)

A.2 Initiate actions to Immediately establish 2 20 ft of l

water above the top of reactor vessel flange.

1-B.

One SDC loop operable, B.1 Initiate actions to Immediately less than 20 feet of establish 2 20 feet water above the of water.

reactor vessel flange and any of the 8 requirements not met (Applicable to initial conditions of one shutdown cooling loop OPERABLE and operating with requirements 1-8)

C.

No SDC loop OPERABLE C.1 Suspend operations Immediately l

or in operation.

involving a reduction in reactor coolant boron concentration.

AhD (continued)

SAN ON0FRE--UNIT 2 3.9-9

.e

i 1',

SDC and Coolant Circulation-Lou Water Level 3.9.5 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME j

C.

(continued)

C.2 Initiate action to Immediately l

restore one SDC loop i

to OPERABLE status and to operation.

Alia C.3 Close all containment 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months or i

penetrations within the providing direct calculated time access from to boil, containment whichever is atmosphere to outside less atmosphere.

I SURVEILLANCE REQUIREl.4ENTS SURVEILLANCE FREQUENCY j

SR 3.9.5.1 Verify required SDC loops are OPERABLE 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and one SDC loop is in operation and circulating reactor coolant at a flow rate of 2 2200 gpm.

i l

l SAN ON0FRE--UNIT 2 3.9-9a

t NPF-10/15-458 i

l t

1 l

ATTACHMENT "F" REVISED SPECIFICATIONS UNIT 3

SDC and Coolant Circulation-High Water Level 3.9.4 3.9 REFUELING OPERATIONS I

3.9.4 Shutdown Cooling (SDC) and Coolant Circulation-High Water Level LC0 3.9.4 One SDC loop shall be OPERABLE and in operation.

NOTE----------------------------

With the upper guide structure removed from the reactor vessel the required SDC loop may be removed from operation l

for s 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months per 8-hour period, provided:

a.

The maximum RCS temperature is niaintained s 140*F.

b.

No operations are permitted that would cause a reduction of the RCS boron concentration.

i c.

The capability to close the containment penetrations I

with direct access to the outside atmosphere within the calculated time to boil is maintained.

l I

d.

The reactor cavity water level is maintained 2 20 feet above the top of the reactor pressure vessel flange, or, for core alterations, 2 23 feet above the top of the reactor pressure vessel flange.

NOTE----------------------------

i A containment spray pump may be used in place of a low l

pressure safety injection pump in either or both shutdown l

cooling loops to provide shutdown cooling flow.

l APPLICABILITY:

MODE 6 with the water level 2 20 ft above the top of the l

l reactor vessel flange.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME i

A.

SDC loop requirements A.1 Suspend operations Immediately not met.

involving a reduction in reactor coolant i

boron concentration.

E i

(continued) r SAN ON0FRE--UNIT 3 3.9-6

SDC and Coolant Circulation-High Water Level 3.9.4 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

(continued)

A.2 Suspend loading Immediately irradiated fuel assemblies in the Core.

AtiQ A.3 Initiate action to Immediately satisfy SDC loop l

requirements.

Atta i

A.4 Close all containment 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months or l

penetrations within the providing direct calculated time l

ar. cess from to boil, containment whichever is ateosphere to outside less atmosphere.

l SURVEILLANCE REQUIREMENTS l

SURVEILLANCE FREQUENCY f

I SR 3.9.4.1 Verify one SDC loop is in operation and 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months circulating reactor coolant at a flow rate of a 2200 gpm.

I i

i i

4 4

SAN ON0FRE--UNIT 3 3.9-7 l

SDC and Coolant Circulation-Lou Water Level 3.9.5 3.9 REFUELING OPERATIONS 3.9.5 Shutdown Cooling (SDC) and Coolant Circulation-Low Water Level l

l LC0 3.9.5 Two SDC loops shall be OPERABLE, and one SDC loop shall be in operation.

NOTE----------------------------

l A containment spray pump may be used in place of a low pressure safety injection pump in either or both shutdown cooling loops to provide shutdown cooling flow.

{

or One loop of shutdown cooling shall be OPERABLE and operating under the following conditions:

1)

The reactor has been shutdown for at least 6 days.

2)

The water level above the reactor vessel flange is 12 feet or greater.

3)

The associated loop of Salt Water Cooling (SWC) is OPERABLE and operating.

j 4)

The o.;sociated Component Cooling Water (CCW) pump and the CCW swing pump are OPERABLE, and the associated CCW l

loop is OPERABLE and operating.

5)

The Shutdown Cooling system is operating using the containment spray pump, and the associated high pressure safety injection pump and the low pressure safety injection pump are OPERABLE and at ambient temperature, available for injection from the RWST.

6)

The RWST contains the volume of water required to raise the level to 20 feet above the reactor vessel flange.

7)

The associated Emergency Diesel Generator is OPERABLE.

8)

The water temperature of the SDC system is maintained less than 120*F.

APPLICABILITY:

MODE 6 with the water level < 20 f t above the top of reactor vessel flange.

l I

SAN ON0FRE--UNIT 3 3.9-8

.. s

?

SDC and Coolant Circulation-Low Water Level 3.9.5 l

I ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

One SDC loop A.1 Initiate action to Immediately inoperable.

restore SDC loop to OPERABLE status.

(Applicable to initial conditions of two shutdown DH coolingloopsOPERABLE)

A.2 Initiate actions to Immediately establish > 20 ft of l

water above the top of reactor vessel flange.

B.

One SDC Loop Operable, B.1 Initiate actions to Immediately less than 20 feet of establish 2 20 ft of water above the water reactor vessel flange and any of the 8 requirements not met (Applicable to initial conditions of one shutdown cooling loop OPERABLE and operating with requirements 1-8)

C. No SDC loop OPERABLE C.1 Suspend operations Immediately l

or in operation.

involving a reduction 1

in reactor coolant boron concentration.

E i

(continued) l SAN ONOFRE--UNIT 3 3.9-9

I SDC and Coolant Circulation-Low Water Level 3.9.5 l

ACTIONS l

CONDITION REQUIRED ACTION COMPLETION TIME I

C.2 Initiate action to Imediately l

restore one SDC loop to OPERABLE status and to operation.

AE C.3 Close all containment 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months or penetrations within the providing direct calculated time access from to boil, containment whichever is atmosphere to outside less atmosphere.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.9.5.1 Verify required SDC loops are OPERABLE 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and one SDC loop is in operation and circulating reactor coolant at a flow rate of 2 2200 gpm.

l SAN ON0FRE--UNIT 3 3.9-9a w

l NPF-10/15-458 1.

i l

m ATTACHMENT "G" FIGURE 1 FROM CALCULATION N0. SUPPLEMENT A N-0220-029 RCS HEATUP RATE AS A FUNCTION OF TIME AFTER SHUTDOWN AND CAVITY LEVEL i

I

- - - - - - * *

6 L= 1--

.

Project or DCP/MMP__ ONGS 2/3 pg, een No. N PAGEg cp 32, S

Ca!c. No.Suco A N.0220 029_

CCN CoMGASJON:

ccN No. CCN -

SubjectACS Hrafvo Forlewine t n" of Shutdown Coolino s

Sheet No]-28

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NPF-10/15-458 l

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I ATTACHMENT "H" Technical Specification Bases for Units 2 and 3 (for Information Only)

- - - ~ -.

SDC and Coolant Circulation-High Water Level B 3.9.4 BASES (Continued) l APPLICABLE If the reactor coolant temperature is not maintained below l

SAFETY ANALYSES 200*F, boiling of the reactor coolant could result.

This could lead to inadequate cooling of the reactor fuel due to j

a resulting loss of coolant in the reactor vessel.

l Additionally, boiling of the reactor coolant could lead to a l

reduction in boron concentration in the coolant due to the l

boron plating out on components near the areas of the boiling activity, and because of the possible addition of water to the reactor vessel with a lower boron concentration l

than is required to keep the reactor subcritical. The loss l

of reactor coolant and the reduction of boron concentration in the reactor coolant would eventually challenge the integrity of the fuel. cladding, which is a fission product barrier. One infn loopiiof the SDC System is required to be operational in MODE 6, with the water level 2 H 20 f t above the top of the reactor vessel flange, to prevent this challenge. The LC0 does permit de-energizing of the SDC pump for short durations under the condition that the baron concentration is not diluted. This conditional de-energizing of the SDC pump does not result in a challenge to the fission product barrier.

SDC and Coolant Circulation-High Water Level satisfies Criterion 3 of the NRC Policy Statement.

LCO Only one SDC loop is required for decay heat removal in MODE 6, with water level > M 20 f t above the top of the reactor vessel flange.

Only one SDC loop is required because the volume of water above the reactor vessel flange provides backup decay heat removal capability. At least one SDC loop must be in operation to provide:

a.

Removal of decay heat; b.

Mixing of borated coolant to minimize the possibility of a criticality; and c.

Indication of reactor coolant temperature.

An OPERABLE SDC loop includes an SDC pump, a heat exchanger, valves, piping, instruments, and controls to ensure an OPERABLE flow path and to determine the low end temperature.

(continued)

SAN ON0FRE--UNIT 2 B 3.9-17 Amendment No. 127

_ ~ _ _

.e i

SDC and Coolant Circulation-High Water Level B 3.9.4 BASES LC0 The flow path starts in one of the RCS hot legs and is (continued) returned to the RCS cold legs.

The LC0 is modified by two Notes.

Wilhithelupperegdide structWelJemove6ffomTthe!reactorjvesseliNote l' allows the required operating SDC loop to be removed from service for up to +2 hours in each 8 hour9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months period, provided thiti ne cperations are pcrmitted that wculd cac5e dilutica cf the Reactor Ccciant System bcron concentration.

a.1 Thff niaxiinumfiRCSileMperatireTis5niainfiinedM140' F

~

b; No operationsLare permittedLthat1would cause"a reductionfoffthesRCS1boronfconcentration. ' '

l ci The f capabi l i ty~t toicl ose it heicon tai nmen ti pis f ra ti ons

'~

withidirect?acc'esRtosthe? outs'idef temperatureiwithin l

the 'calculateditimetto' bo11Cisimaintainedi '~ ~'

l

'?

l

'~

The!reactoricav i tyl sater il evelli s ?ma i n t ai ned M20'feb f l

d above!theltop;of;theTreactorippessuredessellflange, '

l ordforicoreialterati.onsW23 deet [aboveitheitop of the;reactorspressure vessellflange.

1 This permits operations such as core mapping or alterations in the vicinity of the reactor vessel hot leg nozzles, and RCSto-SDCisolationvalvetestinghindfidseriiceitestinglof

'LPSIfsyst'ei@compohents.

During this 4 2ihour peridd,'~ decay' heat is removed by natural convection to' the large mass of l

water in the refueling canal.

Note 2 allows Operations to use a containment spray pump in place of a low pressure safety injection pump to provide i

l shutdown cooling flow.

l I

APPLICABILITY One SDC loop must be in operation in MODE 6, with the water level 2 M 20 ft above the top of the reactor vessel l

flange, to provide decay heat removal. The 23 f t level was l

5 elected because it correspcad; to the 23 ft requiremcat l

Established for fusi movcmcat in LC0 3.9.6, " Refueling "ater Level." Requirements for the SDC System in other MODES are covered by LCOs in Section 3.4, Reactor Coolant System (RCS),andSection3.5,EmergencyCoreCoolingSystems (ECCS). SDC loop requirements in MODE 6, with the water level < M 20 ft above the top of the reactor vessel flange, are located in LC0 3.9.5, " Shutdown Cooling (SDC) and Coolant Circulation-Low Water Level."

(continued) 4 SAN ON0FRE--UNIT 2 B 3.9-18 Amendment No. 127

SDC and Coolant Circulation-High Water Level B 3.9.4 BASES ACTIONS SDC loop requirements are met by having one SDC loop OPERABLE and in operation, except as permitted in the Note to the LCO.

If SDC loop requirements are not met, there will be no i

forced circulation to provide mixing to establish uniform boron concentrations.

Reduced boron concentrations can occur through the addition of water with a lower boron 1

concentration than that contained in the RCS.

Therefore, actions that reduce boron concentration shall be suspended immediately, i

Al If SDC loop requirements are not met, actions shall be taken immediately to suspend loading irradiated fuel assemblies in the core. With no forced circulation cooling, decay heat removal from the core occurs by natural convection to the heat sink provided by the water above the core. A minimum refueling water level of E320 ft above the reactor vessel flange provides an adequate available heat sink.

Suspending any operation that would increase the decay heat load, such as loading a fuel assembly, is a prudent action under this condition.

Asl If SDC loop requirements are not met, actions shall be initiated and continued in order to satisfy SDC loop requirements.

Ad l

If SDC loop requirements are not met, all containment penetrations to the outside atmosphere must be closed to prevent fission products, if released by a loss of decay heat event, from escaping the containment building. The

/g 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months or?withinithef calculat'editimELtolboil Completion Time 74 allows fising most SDC problems ~without incerring the

~

additional action of violating the containment atmosphere.

(continued)

SAN ON0FRE--UNIT 2 B 3.9-19 Amendment No. 127

SDC and Coolant Circulation-Low Water Level B 3.9.5 1

l BASES l

APPLICABLE If the reactor coolant temperature is not maintained below l

SAFETY ANALYSES 200 F, boiling of the reactor coolant could result.

This could lead to inadequate cooling of the reactor fuel due to the resulting loss of coolant in the reactor vessel.

4 Additionally, boiling of the reactor coolant could lead to a reduction in boron concentration in the coolant due to the boron plating out on components near the areas of the boiling activity, and because of the possible addition of water to the reactor vessel with a lower boron concentration than is required to keep the reactor subcritical. The loss of reactor coolant and the reduction of boron concentration in the reactor coolant would eventually challenge the integrity of the fuel cladding, which is a fission product barrier.

Two trefnsr loopszof the SDC System are required to be OPERABLE, and one tnw 1oopjis required to be in operation in MODE 6, with the water level < M 20 f t above the top.of the reactor vessel flange, to prevent this

~

challenge.

Wi tFthejiidfoMVessel t hesQemojed fahd ?l25 feet?ofia' er t

aboveithe reactortvesseliflange;andlallstheispectfied requirements;metWa?heathsinkkisf available?for co~ e cooling r

andia methodHsiavailablehtoirestoref the reactorJcavity levelf toe 20Tfeetraboveithef reactor; vessel?flangen _

therefore, sin 2theieventioffalfailuresof;th.e operating....

shutdownlcoolinglioophadequate;timef.is]provideditofinitiate emergency; procedures.to cooltthelcore.

j SDC and Coolant Circulation-Low Water Level satisfies Criterion 3 of the NRC Policy Statement.

LC0 In MODE 6, with the water level < M20 ft above the top of the reactor vessel flange, both SDC loops must be OPERABLE.

Additionally, one loop of the SDC System must be in operation in order to provide:

a.

Removal of decay heat; b.

Mixing of borated coolant to minimize the possibility of a criticality; and c.

Indication of reactor coolant temperature.

(continued)

SAN ON0FRE--UNIT 2 B 3.9-22 Amendment No. 127

SDC and Coolant Circulation-Low Water Level B 3.9.5 BASES LC0 An OPERABLE SDC loop consists of an SDC pump, a heat (continued) exchanger, valves, piping, instruments, and controls to ensure an OPERABLE flow path and to determine the low end temperature.

The flow path starts in one of the RCS hot legs and is returned to the RCS cold legs.

This LC0 is modified by the Note that allows Operations to use a containment spray pump in place of a low pressure safety injection pump to provide shutdown cooling flow.

6E 1)

Thi[riidf6Ejiii3Eedi;;shUfdo@nifofifilsit36]diis..

2)

Ths~siteElbs1[ib6velthijiiitir.19ss s elj f1 abgehi s ' 12 feetlodgreaterR 3);

The 'ii50iistEd _] 6bp ioff Si] { Wa teET Cobl i.ng f(S.WC) 51 s OPERABLE (andjoperatings 4);

T6Elass6Eiilid[C5pdiienlij C661 t ngiWafirL (CCW)" pump f and the CCW sw CCWil.oop M. i ng ; pump > ar.e t 0PERABLE, J a nd it he, a siOPERABLEand.ioperating(

t Thi7Shstd6WnlCioling*iystsmiis:containmentt.spraypump 5)

To

^

associated 4.h i g h_... _ -

p res s u reis afetyli nj ecti onj pump, and ithehl ow : pres su re saf.etylinjectionipu. mpf are;0PERABLErand f atiambient temperature hav a11..abl elforj i nj ecti on 2 f rom 1the. RWST.

6)'

The7 RWST[cohlta Ms [t6si vol uine"ofNif er]requi fid [t b

' aiselhe il evelito; 20 ?feetj above(the; reactor. ve'ssel r

flanget 7).

ThejissodiatleMEinerssncyiDi_esel[sehefats i.s[0perable.

n 8);

Th'eWa tiR tssiie ra tu re (6 fit.he[SDC fsis t em [i s. ~mai n tii n Ed

^

lesssthan;120!Fr APPLICABILITY Two SDC loops are required to be OPERABLE, and one SDC loop must be in operation in MODE 6, with the water level

< 0320 ft above the top of the reactor vessel flange, to provide decay heat removal.

Requirements for the SDC System in other MODES are covered by LCOs in Section 3.4, Reactor (continued)

SAN ON0FRE--UNIT 2 B 3.9-23 Amendment No. 127

- - -. _ ~

O SDC and Coolant Circulation-Low Water Level B 3.9.5 BASES APPLICABILITY Coolant System. MODE 6 requirements, with a water level (continued) 2 H2O ft above the reactor vessel flange, are covered in LC0 3.9.4, " Shutdown Cooling and Coolant Circulation-High Water Level."

j ACTIONS A.1 and A.2 l

WheMtioiSDCIlbbpsiaFeToperablefandnif one SDC loop it l

is##sblebecomeslinoperable,"actiods^shall be immediately initiated and continued ^until the SDC loop is restored to OPERABLE status and to operation, or until 2 H20 ft of water level is established above the reactor ves'sel flange.

When the water level is established at 2 H2O f t above the reactor vessel flange, the Applicability will change to that of LC0 3.9.4, " Shutdown Cooling and Coolant Circulation-High Water Level," and only one SDC loop is required to be OPERABLE and in operation.

An immediate Completion Time is necessary for an operator to initiate corrective actions.

ILl Wh'enlon'e51boF6fithiiSOC%I0perabli with7re@ireinents L1-8 satisfied landith'eSDCiloo~p,becomes, inoperable:ottanyof1the 8; requi rements iare notimet',1 ac ti onsishall be Limmedi atel y

initiatedito'restablishra aterslev'el+200 feet"abov'e the reactoriflangeGWheniths"wwateM1evel.21s1 established?at >120 feet? above. thei tsactosvesse14 fl ange, :;the r appl icabil ity' will change;to thatfof2LC033;9 4, " Shutdown" Cooling;and Coolant l

Circul_ation-HighSWaterilevelWand only{one SDCiloop11s r'equired::totbe(OPERABLELandlin' operation. - An immediate Completion?Timetisinecessaryifor anioperatot to; initiate correctivelact. ions'.'

10 1 If no SDC loop is in operation or no SDC loops are OPERABLE, there will be no forced circulation to provide mixing to establish uniform boron concentrations.

Reduced boron concentrations can occur by the addition of water with lower l

boron concentration than that contained in the RCS.

l Therefore, actions that reduce boron concentration shall be suspanded immediately.

l (continued)

SAN ON0FRE--UNIT 2 B 3.9-24 Amendment No. 127

SDC and Coolant Circulation-Low Water Level B 3.9.5 BASES ACTIONS fL2 l

(continued)

If no SDC loop is in operation or no SDC loops are OPERABLE, actions shall be initiated immediately and continued without interruption to restore one SDC loop to OPERABLE status and operation. Since the unit is in Conditions A and B concurrently, the restoration of two OPERABLE SDC loops and one operating SDC loop should be accomplished expeditiously.

Y i

l If SDC loops requirements are not met, all containment penetrations to the outside atmosphere must be closed to prevent fission products, if released by a loss of decay heat event from escaping the containment building. The 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months Rw,ithiW[the calculatiditimeTtiboil Completion Time Ngl !

l allows fixing sost' SDC problems with6ut incurring the

^

~

^

additional action of violating the containment atmosphere.

SURVEILLANCE SR 3.9.5.1 l

REQUIREMENTS 4

l This Surveillance demonstrates that one SDC loop is operating and circulating reactor coolant. The flow rate is determined by the flow rate necessary to provide sufficient i

decay heat removal capability and to prevent thermal and boron stratification in the core.

In addition, this Surveillance demonstrates that the other SDC loop is l

OPERABLE.

1 In addition, during operation of the SDC loop with the water l

level in the vicinity of the reactor vessel nozzles, the SDC l

loop flow rate determination must also consider the SDC pump suction requirements. The Frequency of 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months is sufficient, considering the flow, temperature, pump control, and alarm indications available to the operator to monitor the SDC System in the control room.

Verification that the required loops are OPERABLE and in operation ensures that loops can be placed in operation as l

needed, to maintain decay heat and retain forced circulation.

The Frequency of 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months is considered reasonable, since other administrative controls are available and have proven to be acceptable by operating experience.

(continued) l SAN ON0FRE--UNIT 2 8 3.9-24i Amendment No. 127

i l

SDC and Coolant Circulation-High Water Level j

f B 3.9.4 l

l l

BASES (continued)

APPLICABLE If the reactor coolant temperature is not maintained below SAFETY ANALYSES 200*F, boiling of the reactor coolant could result. This could lead to inadequate cooling of the reactor fuel due to a resulting loss of coolant in the reactor vessel.

Additionally, boiling of the reactor coolant could lead to a reduction in boron concentration in the coolant due to the l

boron plating out on components near the areas of the j

boiling activity, and because of the possible addition of 1

water to the reactor vessel with a lower boron concentration l

than is required to keep the reactor subcritical.

The loss of reactor coolant and the reduction of boron concentration in the reactor coolant would eventually challenge the i

integrity of the fuel cladding, which is a fission product barrier.

One teen l'oo~p50f the SDC System is required to be operational in MODE 6, with the water level > M20 ft above the top of the reactor vessel flange, to prevent this challenge. The LC0 does permit de-energizing of the SDC pump for short durations under the condition that the boron concentration is not diluted. This conditional de-energizing of the SDC pump does not result in a challenge to the fission product barrier.

SDC and Coolant Circulation-High Water Level satisfies Criterion 3 of the NRC Policy Statement.

LC0 Only one SDC loop is required for decay heat removal in MODE 6, with water level 2 H2O f t above the top of the reactor vessel flange. Only one SDC loop is required because the volume of water above the reactor vessel flange provides backup decay heat removal capability.

At least one SDC loop must be in operation to provide:

a.

Removal of decay heat; b.

Mixing of borated coolant to minimize the possibility of a criticality; and l

c.

Indication of reactor coolant temperature.

l An OPERABLE SDC loop includes an SDC pump, a heat exchanger, valves, piping, instruments, and controls to ensure an OPERABLE flow path and to determine the low end temperature.

(continued)

SAN ON0FRE--UNIT 3 B 3.9-17 Amendment No. 116

SDC and Coolant Circulation-High Water Level B 3.9.4 BASES l

LC0 The flow path starts in one of the RCS hot legs and is l

(continued) returned to the RCS cold legs.

The LC0 is modified by.two_N_otes. structure. removedsfrom!.th

. W t

l l

required operLating SDC loop to be removed from service for up to +2 hours in each 8 hour9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months period, provided th'ati ne speraticas are permitted that wculd causc dilutica 'f the c

Reactcr Cociant Systcm bcrca ccacentration.

a!

The masimum;RCSItemp5Fature(isTmaint'aih5d T 140*F2 b;

~

No?operationstarespermittedthat;would/causefa l

reduction:ofithe1RCS boron concentration.

6 Thel capabili tyi td;closs1:thei containment} pehetrations with? direct 1accessitoftheloutside1 temperature (within the calculattd!timelto boil 4is! maintained d.

ThelreactdricavityJwater.leve191s maintain 5dN20; feet!

above the:ltop?oflthelreactorL pressuretvesselsflange;

!fortcore!.. alterations;4 239 feet-abovelthet op of t

or,lreactorgpressure vessellflanget the This permits operations such as core mapping or alterations in the vicinity of the reactor vessel R.CS to_SDC isolati_on_ valve testing;iahhot leg nozzl_es, ettdd71 heat is removed by.nents. During this + 2; hour period,' decay LPSlisys_t_em;c_ompo natural convection to the large mass of water in the refueling canal.

Note 2 allows Operations to use a containment spray pump in place of a low pressure safety injection pump to provide shutdown cooling flow.

APPLICABILITY One SDC loop must be in operation in MODE 6, with the water level > H2O ft above the top of the reactor vessel flange,

~~

to provide decay heat removal.

The 23 ft level was selected because it corresponds to the 23 ft requircmcat established for fuel movcmcnt in LC0 3.9.5, " Refueling "ater Level."

Requirements for the SDC System in other MODES are covered by LCOs in Section 3.4, Reactor Coolant System (RCS), and Section 3.5, Emergency Core Cooling Systems (ECCS).

SDC loop requirements in MODE 6, with the water level < H20 ft above the top of the reactor vessel flange, are located in LC0 3.9.5, " Shutdown Cooling (SDC) and Coolant Circulation -

Low Water Level."

(continued) i SAN ON0FRE--UNIT 3 8 3.9-18 Amendment No. 116 1

I SDC and Coolant Circulation-High Water Level B 3.9.4 BASES ACTIONS SDC loop requirements are met by having one SDC loop OPERABl.E and in operation, except as permitted in the Note to the LC0.

M If SDC loop requirements are not met, there will be no forced circulation to provide mixing to establish uniform boron concentrations.

Reduced boron concentrations can occur through the addition of water with a lower boron concentration than that contained in the RCS. Therefore, actions that reduce boron concentration shall be suspended immediately.

M If SDC loop requirements are not met, actions shall be taken immediately to suspend loading irradiated fuel assemblies in the core. With no forced circulation cooling, decay heat removal from the core occurs by natural convection to the heat sink provided by the water above the core. A minimum refueling water level of e320 ft above the reactor vessel flange provides an adequate 'available heat sink.

Suspending

^

any operation that would increase the decay heat load, such as loading a fuel assembly, is a prudent action under this condition.

U If SDC loop requirements are not met, actions shall be initiated and continued in order to satisfy SDC loop requirements.

M If SDC loop requirements are not met, all containment penetrations to the outside atmosphere must be closed to prevent fission products, if released by a loss of decay 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months or~withinTthe ping the containment building.calcnlatsdTtimsit M,

heat event, from esca The allows fixing most SDC problems"without"incofring the

~

additional action of violating the containment atmosphere.

(continued)

SAN ON0FRE--UNIT 3 B 3.9-19 Amendment No. 116

~

i l,

SDC and Coolant Circulation-Low Water Level l

B 3.9.5 l

BASES 1

\\

l l

APPLICABLE If the reactor coolant temperature is not maintained below l

SAFETY ANALYSES 200*F, boiling of the reactor coolant could result. This could lead to inadequate cooling of the reactor fuel due to i

the resulting loss of coolant in the reactor vessel.

Additionally, boiling of the reactor coolant could lead to a reduction in baron concentration in the coolant due to the boron plating out on components near the areas of the boiling activity, and because of the possible addition of l

water to the reactor vessel with a lower boron concentration l

than is required to keep the reactor subcritical.

The loss i

of reactor coolant and the reduction of boron concentration l

in the reactor coolant would eventually challenge the i

integrity of the fuel clad _ ding, which is a fission product barrier.

Two trains l' oops of_the SDC System are required to l

beOPERABLE,andonetreinloopisrequiredtobein l

operation in MODE 6, with the water level < M20 ft above the top of the reactor vessel flange, to prevent this challenge.

WithitheireactorjissellheadVemoYediand?l2Tfeet of watsr above!their.eactorsvessel?flangeland6allSthe specified req'ui remen t s i met d a s heat E si nk ; i s i avail abl e fori core : cool i ng andia methodfis3available;to restore:the rea'ctobcav.ity I

l eve 13 to; 201 fee t I above; t heireac torfvessel s fl ange.1 Therefore bin?the eventlof;alfailure ofithe: operating _..

shutdownicoolinglioopJadequate;timefisprovi.ded(to, initiate emergencylproceduresitofcoolithe' core!

SDC and Coolant Circulation-Low Water Level satisfies Criterion 3 of the NRC Policy Statement.

l LC0 In MODE 6, with the water level < M20 f t above the top of the reactor vessel flange, both SDC loops must be OPERABLE.

1 Additionally, one loop of the SDC System must be in l

operation in order to provide:

l a.

Removal of decay heat; l

b.

Mixing of borated coolant to minimize the possibility of a criticality; and c.

Indication of reactor coolant temperature.

(continued) l SAN ON0FRE--UNIT 3 8 3.9-22 Amendment No. 116

SDC and Coolant Circulation-Lou Water Level B 3.9.5 BASES LC0 An OPERABLE SDC loop consists of an SDC pump, a heat (continued) exchanger, valves, piping, instruments, and controls to ensure an OPERABLE flow path and to determine the low end temperature.

The flow path starts in one of the RCS hot legs and is returned to the RCS cold legs.

This LC0 is modified by the Note that allows Operations to use a containment spray pump in place of a low pressure safety injection pump to provide shutdown cooling flow.

)

or 1).

Thi?eicioMhisibleenfshitdown[forlaCleastT6fdays 2)

Thi7satir[1l evil ?ab6vejihiReihidrives s el:1f.lindsiii f1'2 feet or greater.-

3)'

The7asioEi stid [l oopi bfl Sal tlWafed Cool i ng]'(SWC)(i5

~

OPERABLE land! operating l 4)'

Th'ifaiso[c"iatid$ Comp 6henHCoolithi WitiF(CCW)T pdp and the!CCWfswing1pumpiare10PERABLE,Tand;.the1 associated CCW; loop;is10PERABLElandloperatjnga 5)

ThiTShdiId_owhi Coul i hglsfitimI15[opepit'i ngi~u si ng tit he containment / spray!pumpn andEthetassociatedihigh _

pressure'safetydnjectionpumpfa'nd?thellowl pressure safetyninjectionipumplare<OPERABLEJand'at1 ambient

. tempera ture kav ail abl e;for2j nj ecti onif romithe ! RWST.

6).

Th5[RWSTifconiii hiithifv015mEMfisf eF requi red 5 to Fai selthejl evelj to120;feetabovetthe; reactoriv.ess.el f.1.a~nge ?

7).

Thefis s4di i(edlEmerg encil Di e s ellGenerit o rli s / Ope ra bl.e s 8)~

TheiwitshfempiritUrif6ffth~eSDCfsystem{ismaintained

~

1.ess; than l120*FJ APPLICABILITY Two SDC loops are required to be OPERABLE, and one SDC loop must be in operation in MODE 6, with the water level

< 0320 ft above the top of the reactor vessel flange, to provide decay heat removal. Requirements for the SDC System j

in other MODES are covered by LCOs in Section 3.4, Reactor 1

i (continued) l SAN ON0FRE--UNIT 3 B 3.9-23 Amendment No. 116 l

SDC and Coolant Circulation-Low Water Level B 3.9.5 BASES APPLICABILITY Coolant System. MODE 6 requirements, with a water level (continued)

> M20 ft above the reactor vessel flange, are covered in LC0 3.9.4, " Shutdown Cooling and Coolant Circulation-High Water Level."

ACTIONS A.1 and A.2 WtienftwoTSDCiloopslarefoperable?anWif one SDC loop it inopiFabibbebomesiinoperable, actio6s~shall be immediately initiated and continued until the SDC loop is restored to OPERABLE status and to operation, or until 2 e320 ft of water level is established above the. reactor vess'el flange.

When the water level is established at > H2O ft above the reactor vessel flange, the Applicability will change to that of LC0 3.9.4, " Shutdown Cooling and Coolant Circulation-High Water Level," and only one SDC loop is required to be OPERABLE and in operation. An immediate Completion Time is necessary for an operator to initiate corrective actions.

Ikl Whenionelloogi?off thefS'DC3siope'rable:!niihir'equirements 128 satisfied andithe(SDColoop'becomestinoperable"orianyLofLthe 8.: requirementsj areinot met,Lactionsi shall Jbesimmediately initiated 1to" establish'aiwaterilevel >i201 feet aboveithe

. hen;thelwateslevelsisiestablishedLat > 20 reactor Lf1 ange.:

w feet 1above the1 reactor; vessel: flanged the,a'pplicabilityjwill changeito that7of: LC013.9.4 h"ShutdowniCooling and Coolant Circulation-High Water Level','"fa'ndlonly1one' SDC: loop!is required;to!bec0PERABLEland infoperation? An0immediate Completion TimelisLnecessarylfor;;anloperatorsto; initiate corrective actions; fL1 If no SDC loop is in operation or no SDC loops are OPERABLE, there will be no forced circulation to provide mixing to establish uniform boron concentrations.

Reduced boron concentrations can occur by the addition of water with lower boron concentration than that contained in the RCS.

Therefore, actions that reduce boron concentration shall be suspended immediately.

(continued)

SAN ON0FRE--UNIT 3 8 3.9-24 Amendment No. 116 l

SDC and Coolant Circulation-Lod Mater Level B 3.9.5 BASES ACTIONS fLZ (continued)

If no SDC loop is in operation or no SDC loops are OPERABLE, actions shall be initiated immediately and continued without interruption to restore one SDC loop to OPERABLE status and operation.

Since the unit is in Conditions A and B concurrently, the restoration of two OPERABLE SDC loops and one operating SDC loop should be accomplished expeditiously.

fL3 If SDC loops requirements are not met, all containment penetrations to the outside atmosphere must be closed to prevent fission products, if released by a loss of decay r

heat event from escaping the containment building. The

,,t/I 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months Orlw,ithiinth'elcalculatEdi~timelt6Thoil? Completion Time allowsfiiinVmoWSDCproblemswithout"in6Gringthe additional action of violating the containment atmosphere.

SURVEILLANCE SR 3.9.5.1 REQUIREMENTS This Surveillance demonstrates that one SDC loop is operating and circulating reactor coolant.

The flow rate is determined by the flow rate necessary to provide sufficient decay heat removal capability and to prevent thermal and boron stratification in the core.

In addition, this Surveillance demonstrates that the other SDC loop is OPERABLE.

In addition, during operation of the SDC loop with the water level in the vicinity of the reactor vessel nozzles, the SDC loop flow rate determination must also consider the SDC pump suction requirements.

The Frequency of 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months is sufficient, considering the flow, temperature, pump control, and alarm indications available to the operator to monitor the SDC System in the control room.

Verification that the required loops are OPERABLE and in operation ensures that loops can be placed in operation as needed, to maintain decay heat and retain forced circulation. The Frequency of 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months is considered reasonable, since other administrative controls are available and have proven to be acceptable by operating experience.

(continued)

SAN ON0FRE--UNIT 3 8 3.9-24a Amendment No. 116

..

ML20199D039

Text

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