Text

Proposed Tech Specs 3.5.1 Re Extension of Completion Time for Safety Injection Tanks
	ML20198H688
Person / Time
Site:	San Onofre
Issue date:	01/09/1998
From:	; SOUTHERN CALIFORNIA EDISON CO.
To:	;
Shared Package
ML20198H613	List: ML20198H608; ML20198H665; ML20198H688;
References
	NUDOCS 9801130369
	Download: ML20198H688 (31)
	v • d • e

',

o-- SITS 3.5.1 3.5'EMERGENCYCORECOOLINGSYSTEMS(ECCS) j 3.5.1 SafetyinjectionTanks(SITS)

LCO 3.5.I' Four SITS shall be OPERABLE. l i

APPLICABillTY: = MODES I and 2, MODE 3 with pressurizer pressure a 715 psia.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. -One SIT inoperable due A.1 Restore boron 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months '

to boron concentration concentration to net within limits, within limits. ,

i B. One-SIT inoperable for. B.1 Restore SIT to I hour t 4

reasons other than OPERABLE status.

Condition A.

C. Required Action and C.1 Be in MODE 3. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months associated Completion Time of Condition A AliD or B not met.

C.2 Reduce pressurizer 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months i pressure to

< 715 psia.

-D. -Two or more SITS D.1 Enter LCO 3.0.3. Immediately inoperable.

Nk L ' SAN.ONOFRE--UNIT 2 3.5-1 ' Amendment No. 127. ,

y ., -

, eev ,

SITS B 3.5.1 1

BASES ----

l ACTIONS Ad (continued) during reflood concentrates the boron in the satura+.ed liquid that remains in the core. In addition, the volume of the SIT is still availabic for injection. Since the boron requirements are based on the everage boron concentration of the total volume of three SITS, the consequences are less severe than they would be if an SIT were not available for injection. Thus, 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months is allowed to return the boron concentration to within limits.

Ikl if one SlT is inoperable, for a reason other than boron concentration, the SIT must be returned to OPERABLE status within I hour, in this Condition, the required contents of three Sils cannot be assumed to reach the core during a LOCA. Due to the severity of the consequences should a LOCA occur in these conditions, the I hour Completion Time to open the valve, remove power to the valve, or restore the proper water volume or nitrogen cover pressure ensures that prompt action will be taken to return the inoperable accumulator to OPERABLE status. The Completion Time minimizes the exposure of the plant to a LOCA in these conditions.

C.1 and C.2 If the Sil cannot be restored to OPERABLE status within the associated Completion Time, the plant must be brought to a MODE in which the LCO does not apply. To achieve this status, the plant must be brought to at least MODE 3 within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and pressurizer pressure reduced to < 715 psia '

within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . The allowed Completion Times are reasonable, based on operating experience, to reach the recuired plant conditions from full power conditions in an orcerly manner and without challenging plant systems.

(continued)

SAN ONOFRE--UNIT 2 B 3.5-7 Amendment No. 127

. SITS B 3.5.1 BASES ACTIONS DJ (continued)

If more than one Sli is inuperable, the unit is in a condition outside the accident analyses. Therefore, "

LC0 3.0.3 must be entered immediately.

SURVEILLANCE SR 3.5.1.1 REQUIREMENIS '

Verification every 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months that each Sli isolation valve is fully open, as indicated in the control room, ensures that SITS are available for 11jection and ensures timely discovery if a valve shnid be partially closed, if an isolation valve is not fully o)en, the rate of injection to the RCS would be reduced. Alt 1ough a motor onerated valve should not change position with power removed, a closed valve could result in not meeting accident analysis assumptions. A 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months frequency is considered reasonable in view of other administrative controls that ensure the unlikelihood of a mispositioned isolation valve.

SILJ 5.1. Latid_.SR__ _3. 5.1. 3 SlT boratea' water volume and nitrogen cover pressure should be verified to be within specified limits every 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months in order to ensure adequato injection during a LOCA. Due to the static design of the Sils, a 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months frequency usually allows the operator sufficient time to identify changes before the limits are reached. Operating experience has shown this frequency to be appropriate for early detection and correction of off normal trends.

SR 3 . 5 .1.d Thirty one days is reasonable for verification to determine that each Sii's boron concentration is within the required limits, because the static design of the SITS limits the ways in which the concentration can be changed. The 31 day frequency is adequate to identify changes that could occur from mechanisms such as stratification or inleak ge. A preferred method to sampling is permitted for verifying the boron concentration in the SIT after a greater than or equal (continued)

SAN ON0fRE--UNIT 2 B 3.5 8 Amendment No. 127

SITS B 3.5.1 BASES 1

SURVEILLANCE SR 3.5.1.4 (continued) i i

REQUIREMENTS j

.to 1% volume increase in the SIT not caused by deliberate filling of the Sli from the RWST. This method requires, !

within six haurs, that the new boron concentration of the l affected Sli shall be calculated using the volume change of l the SIT'and the results of the recent RCS-boron analysis. i if the result of the cciculation indicates the boron '

concentration of the affectea SIT is within the limits specified in this SR, the surveillance verification is 1 satisfied. it'is not necessary to verify boron concentration if the-added water is from the RWST, because the water contained in the RWST-is within the SIT boron concentration requirements. This is consistent-with the :

recommendations of NUREG 1366 (Ref. 5). ,

i SR 3.5.1.5 Verification every 31 days that power is removed from each l Sli isolation valve operator when the pressurizer pressure ;

is a 715 psia ensures that an active failure could not result in the undetected closure of an SIT motor operated isolation valve. If this were to occur, only two SITS would- :

be available for injection, given a single failure coincident with a LOCA. Since installation and removal of l power to the SIT isolation valve operators is conducted !

under administrative control, the 31 day frequency was chosen to provide additional assurance that power is removed.

This SR allows power to be supplied to the motor operated isolation valves when RCS aressure is < 715 psia, thus allowing operational flexi)ility by avoiding unnecessary ,

~ delays to manipulate the breakers during unit startups or i shutdowns. Even with power supplied to the vahes, inadvertent closure is prevented by the RCS pressure interlock associated with the valves. Should closure of a !

valve occur in spite of the interlock,- the SI signal provided to the valves would open a closed valve in the

event of a LOCA.

=e 4

(continued) ,

SAN ON0FRE -UNIT ft B 3,5 9- Amendment No. 127- -

_ _ _ _ _ _ _ _ _ __ . _ . . = _. , . ._. -.

. SITS B 3.5.1 BASES (continued)

' REFERENCES 1. IEEE Standard 279-1971.

2. OfSAR, Section 6.3.

3. 10 CFR 50.46. l

4. VfSAR, Chapter 15.

5. NUREG 1366, December 1992.

i SAN ON0FRE--UNIT 2 B 3.5-10 Amendment No. 127

Procedures, Programs, and Manuals o

5.5 5.b Procedures,' Programs, and Manuals 5.5.2.12 Ventilation Filter Testing Program (VFTP) (continued)

- The provisions of Technical Specification Surveillance Requirement 3.0.2 and Technical Specification Surveillance Requirement 3.0.3 are applicable to the VFTP test frequencies.

5.5.2.13 Diesel Fuel Oil Testing Program This program implements required testing of both new fuel oil and stored fuel oil. The program shall include sampling and testing requirements, and acceptance criteria, all in accordanc9 with applicable ASTM standards. The purpose of the program is to establish the following:-

a. 'At lease once per 92 days and from new fuel oil prior to addition to the storage _ tanks by verifying that a sample obtained in accordance with ASTM D4057 81 has a water and sediment content of less than or equal to 0.05 volume percent, an API gravity or an absolute specific gravity within limits, and a kinematic viscosity 0 40 C of greater than or equal to 1.9 but less than or equal to 4.1 when tested in accordance with ASTH D975 81.

b. At least once every 92 days by obtaining a sample of fuel oil in accordance with ASTM D4057-81 and= verifying that.

particulate contamination is less than 10ng/ liter when checked in accordtnce with ASTM D2276-83 Method A.

SAN ONOFRE--UNIT 2- 5.0 20 Amendment No. W ,130

3 l

L ATTACHMENT "B" .

EXISTING TECHNICAL SPECIFICATIONS UNIT 3

. - , - - - - m r , . t-

't* ,

.... .- ./. SITS :

3.5.1 l i3.5' EMER6ENCY CORE COOLING SYSTEMS (ECCS) ,

3.5.1 SafetyinjectionTanks(SITS) ;

j LCO 3.5.l' Four SITS shall be OPERABLE.

r

?

APPLICABillTY- MODES I and 2,-

.M00E 3 with pressurizer pressure a 715 psia.-

t

. ACTION' TNDITION REQUIRED ACTION COMPLETION TIME

- {".

72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months :

'A. One SIT inoperable due A.1 Restore boron to boron concentration concentration,to not within limits. within limits. !

B. One SIT inoperable for B.) Restore SIT to I hour r

reasons other than OPERABLE status.

Condition A. ,

C. Required Action and C.1 Be in MODE 3. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months associated Completion <

Time of Condition A afiQ or B not met.

C.2 Reduce pressurizer 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months pressure to k 715 psia.

Immediately D. Two or more SITS D.1 Enter LCO 3.0.3.. i finorerable.-

c.

+

.t SAN ONOFRE--UNIT 3! 3.5-1 Amendment No. 116 ,

?

^

+y .s e, , -..,.er..-.-c-+ -r , , .e--, - - '. . n +L . , ,n

._ o

.- '- + SITS B 3.5.1 BASES ACTIONS M (continued) during reflood concentrates the boron in the saturated liquid that remains in the core. In addition, the volume of the Sli is still available for injection. Since the boron requirements ara based on the average boron concentration of the total volume of three SITS, the consequences are less severe than they would be if an Sli were not available for injection. Thus, 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months is allowed to return the boron

> concentration to within limits.

M

. If_ one Sli is inoperable, for a reason other than boron concentration, the SIT must be returned to OPERABLE status within I hour, in this Condition, the required contents of three SITS cannot be assumed to reach the core during a LOCA. Due to the severity of the consequences should a LOCA occur in these conditions, the 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months Completion Time to open the valve, remove power to the valve, or restore the proper water volume or nitrogen cover pressure ensures that prompt _ action will be taken to return the inoperable accumulator to OPERABLE status. The Completion Time minimizes the exposure of the plant to a LOCA in these conditions.

C.1 and C.2 If the SIT cannot be restored to OPERABLE status within the associated Completion Time, the plant must be brought to a-

[ MODE in which the LC0 does not apply. To achieve this status, the plant must be brought to at least MODE 3 within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and pressurizer pressure reduced to < 715 psia within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . The allowed Completion Times are reasonable, based on operating experience, to reach the required plant conditions from full power conditions in an orderly manner and without challenging plant systems, emange =i (continued)

SAN ON0FRE- UNIT 3 _B 3.5-7 Amendment No, 116

i

. SITS i B 3.5.1 ;

BASES e

ACT10NS [L1 !

(continued)

If more than one SIT is inoperable, the unit is in a conditica outside the accident analyses. Therefore, i LC0 3.0.3 mist be entered immediately.

l

._ . r i

SURVEILLANCE 1!L_1 5.1.1

. REQUIREMENTS Verification every 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months that each SIT isolation valve is :

fully open, as indicated in the control room, ensures that SITS are available for injection and ensures timely discovery if a valve should be partially closed. If an isolation valve is not' fully o)en, the rate of injection to ;

the RCS would be reduced. Alt 1ough a motor operated valve .

should not change position with power removed,-a closed i valve could result in not meeting accident analysis I assumptions. A 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Frequency is considered reasonable in view of other administrative controls that ensure the unlikelihood of a mispositioned isolation valve.

SR 3.5.1.2-and SR 3.5.1.3 SIT borated water volume and nitrogen cover pressure should be vcrified to be 'dithin specified limits every 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months in order to ensure adequate injection during a LOCA. Due to the static design of the SITS, a 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months } requency usually .

allows the operator sufficient time to ider.tify changes i r'

before the limits are reached. Operating experience has shown this Frequency to be app *opriate for early detection ,

i and correction of off normal trends, SR 3.5.1 4 Th'irty one days is reasonable for verification to deterenine I that each SIT's borop concentration is within the required liraits, because the static design of the SITS limits the ways in which the concentration can be changed. The 31 day Frequency is adequate to identify changes that could occur from mechanisms such as stratification or inleakage. A preferred method to sampling is permitted for verifying the boron concentration in the SIT after a greater than or equal (continued)

SAN ONOFRE UNIT 3 B 3.5-8 Amendment No. 116

. . -. - - - . - - . , - - . . - _ . - - . _ . - . - . ~ _ - _

l 0

SITS ,

B 3.5.1 i

BASES j SURVEILLANCE SR 3.5.1.4 (continued)

REQUIREMENTS to 1% volume increase in the SlT not caused by deliberate filling of the Sli from the RWST. This method requires, within six hours, that the new boron concentration of the affected Sli shall be calculated usin;

volume change of :

the Sli and the results of the recent RCS boron analysis. ;

if the result of the calculation indicates the baron concentration of the affected SIT is within the limits specified in this SR, the surveillance verification is .

satisfied. it is not necessary to verify boron concontration if the added water is from the RWST, because s the water contained in the RWST is within the SIT boron concentration requirements. This is consistent with the recommendations of NUREG 1366 (Ref.- 5).

SR 3.5.1.5 .

Verification every 31 days that power is removed from each '

Sli isolation valve operator when the pressurizer pressure is a 715 psia ensures that an active failure could not result in the undetected closure of an Sli motor operated i isolation valve. If this were to' occur, only two SITS would be available for injection, given a single failure coincident with a LOCA. Since installation and removal of ,

power to the Sl! isolation valve operators is conducted under administrative control, the 31 day frequency was chosen to provide additional assurance that power is !

removed.

This SR allows power to be supplied to the motor operated isolation valves when RCS 3ressure is < 715 psia, thus ,

allowing operational flexi)ility by avoiding unnecessary delays to manipulate the breakers during unit startups or shutdowns. Even with power supplied to the valves, ;

inadverter.t closure is prevented by the RCS pressure interlock associated with the valves. Should closure of a valve occur in spite of the interlock, the SI signal provided to the valves would open a closed valve in the -

event of a LOCA.

(continued)

SAN ON0fRE--UNIT 3 8 3.5 9 Amendment No. 116-4

- .w, ., a,~-. +.E h. 7 e-t .e . . . . . . , - - , , . . ,w . , , -m..e%- . , p c .., ,-,,----m., ,-.r-r.-- %

. - _ _ ~ . _ . . . .- - - . . .

.- - SITS B 3.5.1 i

BASES (continued)

REFERENCES 1. IEEE Standard 279-1971. ,

2. UfSAR, Section 6.3.

3. 10 CFR 50.46. l

4. .UFSAR, Chapter 15.

5. NVREG 1366, December 1992. ,

i t

P SAN ON0fRE- UNIT 3 B 3.5-10 Amendment No. 116

_ - _ . . . . . ~ _ _ _ _ _ _ _ _ _ . _ . . _ . _ _ _ _ _ _ _ _ . . _ . . _ _ _ -

. ' Procedures Prcgrams, and Manuals l 5.5 r 5.5 Procedures 1.itograms, and Manuals .

j '

i 5.5.2.12 VentilationFilterTestingProgram(Vf1P) (continued) !

The provisions of Technical Specif1(.ation Surveillance-Requirement j 3.0.2 and Technical Specification surveillance Requirement 3.0.3 are .

applicable to the VFTP test frequencies.

I 5.5.2.13 Diesel fuel Oil Testing Prograti ;

This program implenents required testing of both new fcal oil and i stored fuel oil. The program s1all. include sampling and testing requirements, and accepte.nce criteria, all in accordance with applicable ASTM standacos. The puri.ose of the program is to

, establish the folloutng: !

a.- At lease once per 92 rhys and frem new fuel oil prior to addition to the stor.9e tanks by verifying that a sample obtained'in accordance with ASTM D4057 81 has a water and sediment content of less than or equal to 0.05 volume percent, an API gravity or ali absoluta specific gravity-within limits, i and a kinematic viscosity 9 40 C of greater than or equal to !

1.9 but less than or equal to 4.1 when tested in accordance I with ASTM-0975 81.

At least-once every 92 days by obtaining a sample of fuel oil

b.

in accordance with ASTM.04057 81 and verifying that .

particulate contamination is less than 10mg/ liter when checked in accordance with ASTM D2276-83, Method A.

r

-SAN ONOFRE--UNIT 3 5.0-20 Amendment No. 1+6,119

.1 ~_, _ , - - _ _ . _ _ . , _ . . , . . . _ . . _ _ _ . 2 - .x. -, .

+ ,

e

h ATTACflMENT "C" PROPOSED SPEC!flCATIONS UNIT 2 f

t

.. ~ w -4_,,

[' *

$1Ts .

3.5.1-3.5 EMLRGENCY CORE COOLING SYSTEMS (CCCS) [

1.5.1 Safety Injection Tanks (SITS) e LCO '3.5.1' four SITS shall be OPERABLE.

i

-APPLICABILITY:. MODES 1'and 2 MODE 3 with pressurizer pressure t 715 psia. -

ACTIONS CONDITION REQUIRED ACTION. COMPLLIION TIME

-A. One Sli inoperable due. A.1 Restore boron 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months

'to boron concentration concentration to

'not within limits. within limits.

((30riet$1T"inopeableTdue B;11 N Restbre?SITTto 72; hours tofinability; toiverif

" ' ~

"' OPERABLE: status, -

Afh.gogpgssgpi~f~ "' ' ~ " ' '

8 8

g. One Sli inoperable for C.1 Restore SIT to 4-heur-24~ hours ~

-t reasons other than OPERABLE status.

Condition A or B.

G G D.

~

Required Action and 0.1 Be in MODE 3. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months associated Completion Time of Condition A MQ <

BforB-gnotmet."7 G-D.2 Reduce pressurizer 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months pressure to

< 715 psia.

t

-0 - D

[. Two or more SITS "

E.1 Enter LCO 3.0.3. Immediately inoperable.

h r

~

SAN'ON0fRE- UNIT 2 - - 3.5-! - Amendment No. IN

.'

SITS B 3.5.1 BASES; -

ACTIONS. 821 (continued) during'roilood concentrates the boron in the saturated liquid that remains in the core, in addition, the volume of -

the SIT:is still available for injection. Since the boron requirements are based on the average boron concentration of the total volume of three SITS,-the consequences are less severe than they would be if an SIT were not availabl9 for

' injection. Thus, 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months is allowed to return the boron concentration to within limits.

fLd 4f cnc SIT is-inoperable, for a rc :ca-Other--th:n Scrcn concentration, the SIT must be returned to OPERABLE ;tatus s

within I hour. In this Conditica, the required content; cf three SIT: connet bc ;>sumed to reach the core during LOCA. Due to-th ;cverity of the consequence; heuld a LOGA cccur in thc;c conditica;, the I hcur Completica Time t-e Open the valve, remcyc power tc- the valve, or rc; tere the proper water vclume cr nitrogen ecver prc;;ure en;urc; that prcmpt- actica will be taken to return the-incperable accumulatcr to CPERABLE ;tatu;. The Completica Time minimice; the expc;ure of-the plant to : LOCA in -these conditionsy Section 7 41of1ReferenceT5; NUREG 1366F discusses surveill' nce a L requi rementsiin; technical e speci fications 'for the instrument channels;used in1the measurement' ~' ' ~

jater level; andipressure iniSITs'.;

Section'7.4?ofReference5?statesLin;partj "TheJcombination~ off redundantilevel? and' pressure i ir,strumentation for-any' single: SIT: mayiprovide; sufficient jnformation Lsolthat*it may_. not: be; worthwhile to always' -

attemptsto' correct-drift' associated with one: instrument

[with resultingL radiation exposures during' entry .into containment) if there were sufficientLtime to repair onetin the eventLthat:aisecond one became iroperable. Because o these=inhtruments;do not initiate a: safety action,-ittis reasonableitoLextend= the; allowable outage-for4 them. . The (NRC] staff,ltherefore, recommends;that_.a_n additional ~

9 (continued)

SAN ON0FRE--UNIT 2 B 3.5-7 Amendment No. 424 pr u _ _______,.___a. - _ - .- _ _ _

9 o ,

a- - *t SITS B 3.5.1-BASESL "J 4

' ACTIONS- E d l(continued) condition'beetablishefforithe'specifiercaseEwhere00ne r

accumulator 2 T)Fis?inoperab1) duetto thelinoperability of-waterslevelt oressureichannels. Nin!which the^ccepletion

. time to! restore theiaccumulator.to operable".statusiwill be"-

72 houre m A Configuration Risk?ManagementrProgram?

defined;ineAdministrative-Controlsesection5.5.2.14(CRMP)~ is - S urg.1 -

implemented in;the1 event /ofnCondition:B. ?While technicall inoperable,/ the; accumulator 'would' bef available to' fulfill"y its=safetyafunction:during this timeland -thus,ithiscchange-would _ havejainogligible;increasejngi.sk_,j'f"~~

- ~ ~ "

Ed IfJone:51T3sTino~

concentration or,perabler.TforTireai6n'otheFthan"bopon theLinability to verify leveicor/ pressure the SITimust'beireturneddto 0PERABLEistatus within.24. hour?sQ In(this Condition ired contents;of:three: SITS ~ '"

cannot be; assumed,1the to*reac.ithe core durin <a LOCA aseis

.assumedgAppendiQto(10CFR50.f" ~ " g- - ""

Refefente?7Jpro'videsTseriesr offdeterministicTand probabilistictfindingstthetisupporte24shourstasibeiKa eitherA" risk beneficial" ori" risk neutral" Din comparison ~1td shorter ~ periods 3for1 restoring theiSIT4to: OPERABLE-status T Reference T discusses a best-estimate analysis *that' ' ' ""

confirmed thatJdurina large~-breakt LOCA; scenarios,o: core' malt can be prevented by eIthercoperation of onetLow? Pressure * '~

Safety 0ln.iection 1.PSIH pump'or:the operation of one Hi Pressure:Safetybl 1ect on (HPSI) pump and a single SIT Cgh Reference 7 also Iscussesia plant-specific probabilistic analysisithat:eva usted<the' risk-impact 1of the: 24: hour ~

recoveryjperjodlinicompar{ son [to;shortegrecoveryjpetodsy i ALonfiguration7Ri~kManagement?ProgramT(ChMP)Edefinedrin s _.

Administrative Controls- sectioni5;5.2.14~ '"~

tis imp ~lemented

~ ~ " ~ in $.@ L theiefentiof4Condition (CQ3 "~^ ^

00.1 and GD.2 If the. SIT cannot be-restored to OPERABLE status within the associated Completion Time the plant-must be brought to a MODE in which the LC0 does,not apply. To achieve this

\

status, the plant must be brought to at least MODE 3 within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and pressurizer pressure reduced to < 715 psia-within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . The allowed Completion Times are ressonable - based on operating experience, to reach the

-requiredplantconditionsfromfullpowerconditions-inan orderly manner and without challenging plant systems.

5 (continued)

SAN _ONOFRE--UNIT-2 B 3.5-8 Amendment No. A N

<c.= ,

< SITS B 3.5.1 BASES' +

.' AC1 IONS 9L1 (continued)

If more than one SIT is inoperable, the unit is.in a condition.outaide the accident analyses. Therefore, LC0 3.0.3 must-be entered immediately. .

SURVEILLANCE SR 3.5.1.1 REQUIEEMENTS Verification every 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months that each SIT isolation valve is fully open, as indicated in the control ~ room, ensures that SITS are available for injection and ensures timely discovery if a valve should be partially closed. If an isolation valve is not fully o)en, the rate of-injection to c the RCS would be reduced. Altlough a motor operated valve

.sh wld not change position with power removed, a closed valve could result in not meeting accident analysis assumptions. A 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Frequency is considered reasonable in view.of other administrative controls that ensure the

. unlikelihood of a mispositioned isolation-valve.

SR 3.5.1.2 and SR 3.5.1.3 SIT borated water volume and nitrogen cover pressure should be verified to be within specified limits every 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months in order to ensure adequate injection during a LOCA. Due to the static design of the SITS, a 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Frequency usually allows the operator sufficient time to identify changes before the limits are reached. Operating experience has shown this Frequency to be appropriate for early detection and correction of off normal trends.

SR 3. 5.- l . 4 Thirty-one days is reasonable T:r verification to determine that each SIT's boron concentration is within the required.

limits, because the static design of the SITS limits the ways-in which the concentration can be changed. The 31 day Frequency is adequate to identify changes that could occur from mechanisms such as stratification or inleakage. A

) referred method to sampling is permitted for verifying the

)oron concentration in the SIT-after a greater than or equal (continued)

SAN'ONOFRE--UNIT 2 B 3.5 9 Amendment No. W

. SITS B 3.5.1 BASES: "

SURVEILLANCE SR 3.5.1.4 (continued)

REQUIREMENTS

- to-15 volume increase in the SIT not caused by deliberate filling of the SIT from the RWST. This method requires, within six hours, that the new boron concentration of the affected SIT shall be calculated ~ using the volume change of the SIT and the results of the recent RCS boron analysis.

If the result of the calculation-indicates the boron concentration of the affected SIT is within the limits specified in this SR, the surveillance verification is-sa'.i s fied , it is not necessary to verify boron concentration if the added water is from the RWST, because the water contained in the RWST is within the SIT boron conceniration requirements. This is consistent with the recommendations of NUREG-1366 (Ref. 5), Reference 6,Tand- "' ~

^

@ferenceJ7; SR 3.5.1.5 Verification every 31 days that power is removed from each SIT isolation valve operator when the pressurizer pressure is a 715 psia ensures that an active failure could not result in the undetected closure of an SIT motor operated isolation valve. If this were to occur, only two SITS would be available for injection, given a single failure coincident with a LOCA. Since installation and removal of power _to the SIT isolation valve operators is conducted under administrative control, the 31 day Freq ancy was chosen to arovide additional assurance that power is removed.

This SR allows power to be supplied to the motor operated isolation valves when RCS )ressure_. is < 715 psia, thus allowing operational flexi)ility by avoiding unnecessary delays to manipulate the breakers during unit startups or shutdowns. Even with power supplied to the valves, 4 inadvertent-closure is prevented by the RCS pressure I interlock associated with the valves. Should closure of a valve occur in spite of the interlock, the SI signal provided to the valves would open a closed valve in the event of a LOCA.

(continued)

. SAN ONOFRE--UNIT 2 B 3.5-10 Amendment No. W

_ _ _ _ - - _ _ _ _ - - - - - - _l

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

i

--* SITS.

B 3.5.1:

BASES.'(continued)

REFERENCES 1.- IEEE Standard 279-1971'.

i

2. UFSAR, Section 6.3..

-3. .10 CFR 50.46.= i

4. UFSAR,-Chapter-15..

5 .- NUREG-1366, December 1992.

+

6??""!NRC1 Generic" Letter?93i057~"lLine Ites0Technidal" c S

. Requirements forxTesting~' During"'~ Power Operations','"

~"

~ ~~"~^ ~ '

S*Ptember;y g 1993.

~

7 "77CETNPSDt994,(?CE0GTJointiA~

p plication? Report?foFSafety ~ ' '

' " injection;TankjA0T/STI!Ex, tension," Aprip ,1995; ^ .

4 l SAN ONOFRE--UNIT 2 . B 73~. 5-10a Amendment No. 4 N -

u

. + - - - , , -_.. . . _ , . J ._

A

-* Procedures, Prograes, and Manuals 5.5 5.5 Procedures,' Programs, and Manuals 5.5.2 12 Ventilction Filter Testing Program (VFTP) (continued)

The provisions of Technical Specification Surveillance Requirement 3.0.2 and Technical Specification Surveillance Requirement 3.0.3 are applicable to the VFTP test frequencies.

5.5.2.13 Diesel Fuel Oil Testing Program This program implements required testing of both new fuel oil and stored fuel oil. The program shall include sampling and testing requirements, and acceptance criteria, all in accordance with applicable ASTM standards. The purpose of the program is to establish the following:

a. At least once per 92 days and from new fuel oil prior to addition to the storage tanks by verifying that a sample obtained in accordance with ASTM-D4057-81 has a water and sediment content of less than or equal to 0.05 volume percent, an API gravity or an absolute specific gravity within limits, and a kinematic viscosity 0 40 C of greater than or equal to 1.9 but less than or equal to 4.1 when tested in accordance with ASTM-D975-81.

A At least once every 92 days by obtaining a sample of fuel oil in accordance with ASTM-04057-81 and verifying that particulate contamination is less than 10mg/ liter when checked in accordance with ASTM-D2276-83, Method A.

5.5.2.14- Configuration Risk ~ Management Program-(CRMP) l The Configuration Risk Management' Program "(CRMP) Lprovides' a proceduralized-risk-inf ormed assessment to manage the risk ~

associated with. equipment inoperability. The program applies to technicalLspecification structures, systems, or components for which a risk-informed Completion Time har been granted. The. program shall include the following elements:

a. Provisions' for the control and implementation;of a Level ~ 1 at power internal events PRA-informed methodology. .The assessment shall be capable of evaluating the applicable' plant configuration,

~

b.. : Provisions for performing an-. assessment prior to entering ~the

~

LCO Condition'for.prepisnned activities.'

c.

Prov;sions for-performing an assessment after entering the LCO C_ondition for unplanned entry into the LCO Condition.

SAN ON0FRE--UNIT 2 5.0-20 Amendment No. 42hMO

. . + , , ,

.- -- Procedures,- Programs, and Manuals 5.5-

- 5.5 Procedures, Progra:as, and Manuals

_f_'-

5;5~.2l14f;ConfigurationRisk;ManagementProgrim(CRMP)j(Continued). ;

d2 ' Provisions 'for ' assessing"theTneed: forLadditionalPactions after

' 'the discovery ~of additional; equipment;out of-service' ~"

conditions'while in the LCO Conditione g ,1l e.'

ProvisionsTfor considering"otherJapplicable rick significant

~ '

contributors suchlas;-Level 2 issues,.and external events,-

~ ~~~~' ~~'

qual i t at i vely; orJ qu anti t ati.vely.;

r i

i SAN ONOFRE--UNIT 2 5;0-20a Amendment No.- 427,130

\;

j, ,

O ATTACHMENT "D" PROPOSED SPECIFICATIONS UNIT 3

.. . v: ..

i\ r j i.:

SITS 3.5.1.

f

-3.5' . EMERGENCY; CORE COOLING SYSTEMS (ECCS).

L3.5.1 _Safetyx: InjectionTanks(SITS)

.LC0;.3.5.1L Four SITS shall b'e OPERABLE.-

APPLICABILITY: MODES 1 and 2, MODE 3 with pressurizer pressure t 715 psia.

-ACTIONS-CONDITION REQUIRED ACTION COMPLETION. TIME'

. A. : One SIT inoperable due A.1 Restore boron. 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months to boron concentration cor. centration to not,within limits.- within limits.

8 3 06C SIT 31nbpireb1Hidde B;1F S >Rsst'orefSITito [2j~ hours'

~~tofinaLilityjtbWerify' "~~~'0PERABLEi ~ ~ ~ ~

sthtdC

]$*15$$$*'*$$C 8 - B C.

-One SIT inoperable for- C.1' Restore SIT to I h=r 24; hours

~ ~ " ~ '

reasons' other than OPERABLE status.

. Condition A or B.

'G . - G 10,

~

' Required Action and Q.1 Be in MODE 3. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months associated Completion Time of Condition'AT AND

'~

BJ or B-C " not-met. ~

G g.2 Reduce pressurizer 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months pressure to

< 715 psia.

10 .. . 9

.E.'

-~ '

Two or mereLSITs ~

E .1 -

Enter LC0 3.0.3. Immediately inoperable.

- 3: SAN'ONOFRE--ONIT 3- 3.5-1 Amendment No. 4 %

'^'

-.__._.m ____--.--____--_m_-_. __ - ..- -. m. _.__.m.

i.. ,

4 -' SITS B 3.5.1 BASES-ACTIONS _ A d (continued) during reflood concentrates the boron in the saturated liquid that remains in the core. In addition, the volume of the SIT is still available for injection. Since the boron requirements are based on the average boron concentration of the total volume of three SITS,._the consequences are less severe than they would be if an SIT were not available for injection. Thus, 72' hours is allowed to return the boron concentration to within limits.

B.d M-enc SIT i; ineperabic, for a rc;;ca ether than bcron eeneentrat4cn, the SIT must be- returned 10 CPERABLE :tet+s w4 thin 1 Scur. In thi; Condi44ca, the required content +-ef thre SIT: cannot bc :::umed to reach the-eerc during a LOCA. Due to the ;cyceMy of the consequeneeec;hould : LOGA occur in the:c condMien;, the 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months Comple14cn Time te open-the-valve, rencyc power to the valve, cr_ restore the propeMater volume or nitrogen cover prc ;ure-en;urc; that prompt--aet4en-w4-ll be taken to return tte incperable accumuleter--tc OPERABLE st+te . The Cc=pletica Time minimizes the exposure of the plant to a LOCA in thc;c eendM4enw Section '7.4 ~of Reference 15,7 NUREG-1366,f discusses surveillance _ requirements-inL technical specifications ~ for the' instrument channelsf used in the~ measurement of. water level;and pressure'in SITS.

Section 7 4 lof Reference . 5'statesiin; part)

"The combination =of redundant leveF and' pressure instrumentation forLany single SIT;may' provide sufficient information'so that it may not be worthwhile to;always attempt lto correct drift. associated with~one instrument

[with resulting radiation exposurss:during entryfinto containment]'ifcthere were sufficient time to repai_r'one in the event that 'a:second one became-inoperable. Because these instruments do?not: initiate a" safety action, itfis reasonable to extend the-allowable l outage for them. The

[NRC) staff, therefore,, recommends that an'-additional (continued)

SAN ONOFRE--UNIT B 3.5-7 Amendment No. 4%

< .a +,-

.. =

SITS

-B 3.5.1

BASES - - '

ACTIONS'- L1 (continued) cond i ti on be"e s t abl i~shed ' for'the speci e fi c 'ca se F where N "One accumulatort water level'a[nd SIT)Liscinoperable due;to:the31noperability pressure channels,"?in:which the comple; ion of timextofrestoreithe accumulator to'. operable: status:will be" 72: hours a A Configur. tion- Risk' Managements Progrant definedain- Administrative; Controls section: 5.5.2.14(CRMP)'* ir" implemented in*the. event oft Condition BD 1hileetechnically S ff'1 4the accumulator?would be:availablesto fulfill inoperable,functionduringithis;timecanddthus its safetys wouldjave(as negligib,lehiper,easefingisk._"( ' 6this change

~ ~ ~ ~

El

.IffoneISITiis? inoperable TforTreason otherithin1 boron concentration:or thelinability to -verify levels or pressure?

the'SITJaust be returned-.to OPERABLE 3statusiwithin:24' hours?

In:this? Condition xthe: required contents of three; SITS' ^ - "

cannot- be- assumed,;to reach, the: core during{a; L0CAlas;is ~

assumed;in Appendix:X to;100FR50p Reference 17TprovidesTserlesTofideterministic7and probabilistic findings. thattsupport124 hours?as: beina 1 either:" risk beneficial"Jor " risk: neutral"41n: comparisonito shorter periods forcrestoring the-SITeto.0PERABLE-statust""

Reference- 7e discusses a best-estimate! analysis that~

during large-break LOCA scenarios 1 core 7 melt confirmed'that,d can.be:prevente by either operation.of one Low'Pr, essure ~ ~

Safetylln.iection;(LPSIf pump or'the:operationLof one High Pressure Safety 41n1ectuon< HPSI oump and aesingle< SIT w Reference :7:also'd l scusses(a3cla):nbspecific probabilistid analysisithat. evaluated:the rlsk-impact ;of thel24 hour" recovery [periodbi,n3gapa[isonjtoishorterrecovery3periodsj A" Configuration *R1sk Management? Program 7 CRMP i Administrative; Controls-section?5.5.2.14(zisnim)1definedTinplementedsin the . event;ofsCondition;C.3

' - ~ ~ ' ~ ^~~ ~ S m.1 -

C-D.1 and C4.2 If the SIT cannot be restored to OPERABLE status within the-associated Completion Time, the plant must be brought to a MODE in which the LC0 does not apply. To achieve this status, the plant must be brought to at least MODE 3 within 6hoursandpressurizerk~ressurereducedto<715 within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . The al ad Completion Times are psia reasonable based on operating experience to reach'the required plant conditions from fell power, conditions in an orderly manner and without . challenging plant systems.

(continued)

SAN ONOFRE--UNIT 3 B 3.5-8 Amendment No. 4%

i

, c .

SITS B 3.5.1 BASES ACTIONS fL1 (c*,ntinued)

If more than one SIT is inoperable, the unit is in a condition outside the accident analyses. Therefore, LCD 3.0.3 must be entered immediately.

SURVEILLANCE SR 3.5.1.1 REQUIREMENTS Verification every 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months that each SIT isolation valve is fully open, as indicated in the control room, ensures that SITS are available for injection and ensures timely discovery if a valve should be partially closed. If an isolation valva is not fully open, the rate of injection to the RCS would be reduced. Although a motor operated valve should not change position with power removed, a closed valve could result in not meeting accident analysis assumptions. A 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Frequency is considered reasonable in v;ew of other administrative controls that ensure the unlikelihood of a mispositioned isolation valve.

SR 3.5.1.2 and SR 3.5.1.3 SIT borated water volume and nitrogen cover pressure should be verified to be within specified limits every 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months in order to ensure adequate injection during a LOCA. Due to the static design of the SITS, a 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Frequency usually allows the operator sufficient time to identify changes before the limits are reached. Operating experience has shown this Frequency to be appropriata for early detection and correction of off normal trends.

SR 3.5.1.4 Thirty-one days is reasonable for verification to determine that.each SIT's boron concentration is within tha required limits, because the static design of the SITS limits the ways in which the concent ation can be changed. The 31 day Frequency is adequate to identify changes that could occur from mechanisms such as stratification or inleakage. A preferred method to sampling is permitted for verifying the boron concentration in the SIT after a greater than or equal (continued)

SAN ON0FRE--UNIT 3 B 3.5-9 Amendment No. 446

. R. . +

(. .(-'

c. ; # #

SITS B-3.5.1-

+ ,

BASES;

SURVf" 8 ANCE E

'SR 3.5.1.4 -(continued)

REQUI.dfNTS-to 1%, volume increase in the SIT not caused by deliberate--

filling of the SIT from the RWST. - This method requires, -

within.six hours, that the new boron concentration of_the-affected SIT shall be calculated using the voluma change of-the SIT and the results of the recent RCS. boron analysis.-

, if the result of the calculation indicates the boron concentration of the affected SIT is within the limits specified in this SR, the surveillance verification is -

satisfied.- It is not necessary_to verify boron concentration if the added water is from the RWST, because-the water contained in the RWST-is within the SIT boron concentration requirements. This is consistent with the recommendationsofNUREG-136G(Ref.5)*,l Reference 6f'a'nd

~

^

Referencej 7.'

SR 3.5.1.5 Verification every 31 days that power is removed from each SIT- isolation valve operator _. when-the pressurizer pressure i is a 715 psia ensures that an active failure could not

' result in the undetected closure.of an SIT motor operated isolation valve. If this were to occur, only two SITS would i be available for injection, given a single failure coincident with a LOCA. Since installation and removal of power to the SIT isolation valve operators is conducted under administrative control, the 31 day Frequency was chosen to provide additional assurance that power is removed.-

This SR allows-power to be supplied to the motor operated isolation-valves when RCS pressure is < 715 psia, thus allowing operational flexibility by avoiding unnecessary

.-- delays to manipulate the breakers during unit startups or shutdowns. Even with power supplied to-the valves, inadvertent closure-is prevented by the.RCS pressure interlock associated with the valves. Should closure of a valve occur in spite of-the interlock, the SI signal provided to the valves would open a closed valve in the event-of a'LOCA.

(continued)

SAN-.0N0FRE--UNIT 3 B 3.5-10 Amendment No. 4 %

1 l

I

- .. J

. : >> 4 j.<, :- - -

SITS

, B-3.5.1 BASES -(continued)q ; -

REFERENCES 1

1. IEEE Standard 279 1971,

2. UFSAR, Section 6.3.

3. 10 CFR 50.46.-

4. UFSAR, Chapter 15.

5. NUREG-1366, December _1992.

6E NRC-_Generivij letter? 93-05,i"Linellt'em1 Technical '

~'

Specification, Improvements l:to;. Reduce Surveillance _

Requirements! fort: Testing'During Power Operations,~1 -

~~

Septembe(27Cl,993l~~

7;J~T.CE NPSD-994,1:?CE0GrJoint' Application:: Report %for" Safety

~~ InjectionJank MT/STlqEftensi.on," . April l.1995 f ' ' ~ ~

SAN ON0FRE--UNIT 3 B(3-5-10a

. lunendment No.- 4%

. _ _ _ _ _ _ _ _ _ _ _ _ - - _ - - _ _ _ - - - . - _ - _ _ - - - - - _ _ _ _ _ - - - _ - - - - - _ - _ - - _ _ - - _ _ _ -u

. v .

'"* Procedures, Prograns, and Manuals 5.5 5.5 Procedures', Programs, and Manuals 5.5.2.12 Ventilation Filter Testing Program (VfTP) (contirued)

The provisions of Technical Specification Surveillance Requirement 3.0.2 and Technical Specification Surveillance Requirement 3.0.3 are applicable to the VFTP test frequencies.

5.5.2.13 Diesel fuel Oil Testing Program This program implements required testing of both new fuel oil and stored fuel oil. The program shall include sampling and testing requirements, and acceptance criteria, all in accordance with applicable ASTM standards. The purpose of the program is to establish the follcwing:

a. At least once per 92 days and from new fuel oil prior to addition to the storage tanks by verifying that a sample obtained in accordance with ASTM-D4057-81 has a water and sediment content of less than or equal to 0.05 volume percent, an API gravity or an absolute specific gravity within limits, and a kinematic viscosity @ 40 C of greater than or equal to 1.9 but less than or equal to 4.1 when tested in accordance with ASTM-D975-81.

b. At least once every 92 days by obtaining a sample of fuel oil in accordance with ASTM-D4057-81 and verifying that particulate contamination is less than 10mg/ liter when checked in accordance with ASTM 02276-83, Method A.

5. 5. 2.14 -- _ConfigurationRiskManagement' Program (CRMP)

The Configuration' Risk. Management Program (CRMP) provides a proceduralized risk-informed assessment to manage the risk associated with equipment inoperability.- The-program applies'to technical specification-structures, systems, or components for which a risk-informed Completion Time has been granted. :The program shall include the following elements:

a.. Provisions for. the control and irrplementation of ~a Level 1 at "Il power internal events PRA-informed methodology. The assessment shall. be. capable of evaluating-the applicable plant configuration.

b. , Provisions for perfcrmiag an assessment ~ prior to entering ~the LC0 Condition for' preplanned activities,

~

c. Provisions for performing an assessment after entering the.LCO Condition for. unplanned entry into.the_LCO Condition.

SAN ON0fRE--UNIT 3 5.0-20 Amendment No. H6rH9

_ - . _ . _ _ - - . _ _ > . . - _ _ _ . _ . _ . _ . _ _ . _ . - _ . . _ _ _ . _ . . . . ~ . .

. . y _ . .-

-- Procedures, Programs, and_ Manuals -

- 5.5 i

-- 5. 5 : . Procedures', Programs, and Manuals 5:5;tf14Q (Configurition Risk 1M_anagement?Progrian[(CMP){(Continved) _

fiL.'iProvisionsTfor assessingTthe"needifor"additionaEactionsiafter, "

~ "the discovery offadditior.al-equipment outLof service ~' ^ ' ^

i:onditionslwhile in.lthe LCO Conditionj Provi sions1 for considering rother ' applicabl e ri skt signi fi cant -

- ek..--w"stmunwch as. Level:- 2 tissues,T'and

. ~ ~ ' ~

foxternal events,

' ~ '~'

' qual itatively;oriquantitatively ? .

i

.I Amendment No. 115,119

-SAN ON0FRE--UNIT 3 5~;0-20a

ML20198H688

Text

Navigation menu

Search