Text

Proposed Tech Specs Revising Requirements for Automatic Actuation Logic & Actuation Relays Associated W/Cravs Operation Function,Which Is Part of ESFAS
	ML20217E952
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Site:	Catawba
Issue date:	04/20/1998
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ML20217E949	List: ML20217E944; ML20217E952;
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Specification 3.3.7 ACTIONS (continued) j CONDITION REQUIRED ACTION COMPLETION TIME l I

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 I associated i Completion Time for AEl Condition A or B not Omi' #

n EIfZ,f3g C.2 Be in MODE 5. 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months

- - 1 D. Required Ac on and 0.1 Suspend CORE Imediately associated ALTERATIONS.

Completio Time for Condition A or B not AEl met duri movement -

of irra ated fuel D.2 Suspend mov nt of Innediate assemb es or during irradiated fuel CORE TERATIONS. assemblie .

E. R ired Action and E.1 Initi e action to Imme ately a ociated resto one CRAVS train C letion Time for to O RABLE status. m,n ndition A or B not t in MODE 5 or 6. j LICWff SMV40M6W DMEP y./2.s/fp Page b of

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Discussicn of Chang s Secticn 3.3 - Instrumentation l

TECHNICAL CHANGES - MORE RESTRICTIVE )

M.13 CTS Table 3.3-3 Action 16a for RWST level-low requires the inoperable channel to be placed in bypass and operation may continue. ITS 3.3.2 requires the channel to be placed in bypass within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . This change is more restrictive since no time limit is specified in the CTS. When the CTS actions cannot be completed, an LC0 3.0.3 entry is required. ITS 3.3.2 adds a shutdown requirement if the actions cannot be met within the required Completion Time. The shutdown requirements are for the plant to be in mode 3 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and mode 5 within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . This change is more restrictive, because with the CTS LC0 3.0.3 requirement, one additional hour is allowed prior to beginning the shutdown. These changes are consistent with NUREG-1431.

M.14 Not used.

M.15 CTS Table 3.3-3 actions 16b and 29 is,we-entered when one channel l of the associated ESFAS Function is inoperable. When actions cannot be completed, an LC0 3.0.3 entry is required. ITS 3.3.2 i adds a shutdown raquirement if the actions cannot be met within the required rampletion Time. The shutdown requirements are for the plant to be in mode 3 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and mode 5 within the followirig 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . This change is more restrictive, because with the CTS LC0 3.0.3 requirement, one additional hour is allowed prior to beginning the shutdown. This change is consistent with NUREG-1431.

M.16 Not used.

M.17 Not used.

M.18 Not Used. CTS 3.3.2 Centrol ROOM Arca "cntilation Operation is applicable in all mode . ITS 3.3.7 add; the applicability Of "during =0vement Of irradiated fuel a;;cmblic;" and "During CORE ALTERATIONS" 10 cover those time; ahen a potential accident could l Occur. Fuel handling accident; are event; that c0uld cau;c radiation level; to rise in the c0ntr01 r00m. Other related change; inv0lve action; 10 allevictc thc;c potential hazard; with varica; levch of Control Room ventilation degradation. Thc;c change; in ITS 3.3.7 are additional restriction; phced on the plant and are considered merc rc;trictive. Thi; change i; consistent with N'JREC- 1431.

Catawba Units 1 and 2 Page M - 4, 4/20/9Bhpplement 15/20/97l

I Discussian of Changss Secticn 3.3 - Instrumentation TECHNICAL CHANGES - MORE RESTRICTIVE M.19 CTS 3.3.2 Action 24 specifies no subsequent actions if the required actions cannot be met. ITS 3.3.7 will require the plant to be placed in mode 3 in 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and mode 5 in 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months if the actions are not met in mcde: 1 F. This action is prudent because ir mcde: 1, 2, 3, and ", protection is required to maintain the control room habitable for the operators in case of a LOCA. The CTS would require an LC0 3.0.3 entry in this case, which would require the plant to be in mode 5 in 37 hours4.282407e-4 days 0.0103 hours 6.117725e-5 weeks 1.40785e-5 months . This change is slightly more restrictive since it allows one less hour to reach mode 5. If the action; cre not met in mcde: 5 and 5, ITS 3.3.7 require; that action be initiated tc rc;ter One CR!!VS actuation train to operable statu;. Thi; action i; prudent since control rec habitability i; required for an accidental relca:c cf radiation from a fuel handling accident. The CTS LC0 3.0.3 dec; not provide any action; in thc;c mcde;, therefore, thi; action i;

=cre restrictive. This change is consistent with NUREG-1431.

M.20 CTS 3.3.2 Action 16 does not specify a time to place an inoperable containment pressure high-high in the bypassed condition. ITS 3.3.2 requires 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months to complete the action. This change is more restrictive since a completion time was not previously specified. This change is consistent with NUREG-1431.

M.21/M.22 Not used.

M.23 CTS Table 3.3-10 and 4.3-7 for accident monitoring instrumentation have been revised to include wide range neutron flux monitors, {

containment isolation valve position, and steam generator water )

level (wide range) indicators. These variables are included in l ITS 3.3.3 because they identified as RG 1.97 category 1 variables in UFSAR Table 1-11. This table also identifies nuclear service water to AFW system valve position and condensate to AFW system valve position as category 1 variables, however, these functions are not included since AFW flow indicators are the type A category 1 variable already contained within the TS to indicate AFW assured source.

l lCatawbaUnits1and2 Page M - 5 4/20/98 pp?cment 15/20/97

Reprinted Improved Technical specifications Pages i

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( -

CRAVS Actuation Instrumentation 3.3.7 3.3 INSTRUMENTATION 3.3.7 Control Room Area Ventilation System (CRAVS) Actuation Instrumentation LC0 3.3.7 The CRAVS actuation instrumentation for each Function in Table 3.3.7-1 shall be OPERABLE.

l APPLICABILITY: MODES 1, 2, 3, and 4.

ACTIONS

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

Separate Condition entry is allowed for each Function.

CONDITION l REQUIRED ACTION COMPLETION TIME A. One or more Functions A.1 --------NOTE--------

with one train Place in chlorine gas inoperable, protection mode if automatic transfer to chlorine gas protection mode is inoperable.

Place the CRAVS train 7 days with inoperable actuation train in operation.

(continued) l l

l Catawba Unit 1 3.3-48 4/20/98 l

1 4

CRAVS Actuation Instrumentation 3.3.7 I ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME l

1 B. One or more Functions ------------NOTE-------------

with two trains Place in the chlorine gas )

inoperable. protection mode if automatic j transfer to chlorine gas l protection mode is inoperable.

8.1 Verify one CRAVS Immediately train is in l

operation.

AHQ B.2 Enter applicable Innediately Conditions and Required Actions for one CRAVS train made inoperable by inoperable CRAVS actuation instrumentation.

)

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 for Condition A AHQ C.2 Be in MODE 5. 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months l

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Catawba Unit 1 3.3-49 4/20/98 l i l

l

1

. I CRAVS Actuation Instrumentation 3.3.7 SURVEILLANCE REQUIREMENTS

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

Refer to Table 3.3.7-1 to determine which SRs apply for each CRAVS Actuation Function.

SURVEILLANCE FREQUENCY SR 3.3.7.1 Perform ACTUATION LOGIC TEST. 31 days on a STAGGERED TEST BASIS l

I SR 3.3.7.2 Perform MASTER RELAY TEST. 31 days on a l STAGGERED TEST )

BASIS

]

i SR 3.3.7.3 Perform SLAVE RELAY TEST. 92 days i

l i

l l Catawba Unit 1 3.3-50 4/20/98

CRAVS Actuation Instrumentation B 3.3.7 BASES I

I LC0 1. Automatic Actuation Looic and Actuation Relavs (continued) l Automatic Actuation Logic and Actuation Relays consist of the same features and operate in the same manner as described for ESFAS Function 1.b., SI, in LC0 3.3.2.

The specified conditions for the CRAVS portion of l l

these functions are different and less restrictive than those specified for their SI roles. If one or more of ',a SI functions becomes inoperable in such a 1

manner ? -t only the CRAVS function is affected, the Conditions applicable to their SI function need not be entered. The less restrictive Actions specified for inoperability of the CRAVS Functions specify sufficient compensatory measures for this case.

2. Safety In.iection Refer to LC0 3.3.2, Function 1, for all initiating Functions and requirements.

APPLICABILITY The CRAVS Actuation Instrumentation Functions must be OPERABLE in MODES 1, 2, 3, and 4 to support automatic actuation on SI initiation. Since the only automatic actuation function of the CRAVS is due to a SI initiation, the CRAVS Actuation Instrumentation Functions must be OPERABLE whenever SI is required to be OPERABLE.

ACTIONS A Note has been added to the ACTIONS indicating that separate Condition entry is allowed for each Function. The Conditions of this Specification may be entered independently for each Function listed in Table 3.3.7-1 in the accompanying LC0. The Completion Time (s) of the inoperable channel (s)/ train (s) of a Function will be tracked separately for each Function starting from the time the Condition was entered for that Function.

(continued)

Catawba Unit 1 B 3.3-143 4/20/98 l

CRAVS Actuation Instrumentation

, B 3.3.7 BASES ACTIONS B.1 and B.2 (continued) 1 l

The Required Action for Condition R is modified by a Note that requires placing the CRAVS train in the chlorine gas protection mode instead of the pressurized mode of operation if the automatic transfer to chlorine gas protection mode is inoperable. This ensures the CRAVS train is placed in the most conservative mode of operation relative to the ,

OPERABILITY of the associated actuation instrumentation. j C.1 and C.2 Condition C applies when the Required Action and associated Completion Time for Condition A or B have not been met. The l unit must be brought to a MODE in which the LCO requirements are not applicable. To achieve this status, the unit must be brought to MODE 3 within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and MODE 5 within 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months . The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems. i l i i

SURVEILLANCE A Note has been added to the SR Table to clarify that REQUIREMENTS Table 3.3.7-1 determines which SRs apply to which CRAVS Actuation Functions.

SR 3.3.7.1 SR 3.3.7.1 is the performance of an ACTUATION LOGIC TEST. l The train being tested is placed in the bypass condition, thus preventing inadvertent actuation. Through the ;

semiautomatic tester, all possible logic combinations, with l and without applicable permissives, are tested for each protection function. In addition, the master relay coil is pulse tested for continuity. This verifies that the logic modules are OPERABLE and there is an intact voltage signal path to the master relay coils. This test is performed every 31 days on a STAGGERED TEST BASIS. The Frequency is justified in WCAP-10271-P-A, Supplement 2, Rev.1 (Ref. 2).

, 4 (continued)

Catawba Unit 1 8 3.3-145 4/20/98 l

CRAVS Actuation Instrumentation B 3.3.7 BASES SURVEILLANCE SR 3.3.7.2 REQUIREMENTS (continued) SR 3.3.7.2 is the performance of a MASTER RELAY TEST. The MASTER RELAY TEST is the energizing of the master relay, verifying contact operation and a low voltage continuity check of the slave relay coil. Upon master relay contact operation, a low voltage is injected to the slave relay coil. This voltage is insufficient to pick up the slave relay, but large enough to demonstrate signal path continuity. This test is performed every 31 days on a STAGGERED TEST BASIS. The Frequency is acceptable based on instrument reliability and industry operating experience.

SR 3.3.7.3 SR 3.3.7.3 is the performance of a SLAVE RELAY TEST. The SLAVE RELAY TEST is the energizing of the slave relays.

Contact operation is verified in one of two ways. Actuation equipment that may be operated in the design mitigation MODE is either allowed to function or is placed in a condition where the relay contact operation can be verified without operation of the equipment. Actuation equipment that may not be operated in the design mitigation MODE is prevented from operation by the SLAVE RELAY TEST circuit. For this latter case, contact operation is verified by a continuity check of the circuit containing the slave relay. This test is perforned every 92 days. The Frequency is acceptable based on instrument reliability and industry operating experience.

(continued) l Catawba Unit 1 B 3.3-146 4/20/98

I l

CRAVS Actuation Instrumentation B 3.3.7 L

BASES (continued)

REFERENCES 1. 10 CFR 50.36, Technical Specifications, (c)(2)(ii).

2. WCAP-10271-P-A, Supplement 2, Rev. 1, June 1990, l

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Catawba Unit 1 B 3.3-147 4/20/98 l

Revised NUREG-1431 Marked-up Pages i

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Actuation Instrumentation 3.3.7 3.3 INSTRUMENTATION y g g 3.3.7 Control Room (mergency Ffftrations System ( ) Actuation Instrumentation LCO 3.3.7 The etuation instrumentation for each Function in Table 3.3.71 shall be OPERABLE.

ank Y APPLICABILITY: MODES 1. 2. 3. 5. and .P -

Duripig movese f irradi ed fuel asshlie g D/ingCORE IONSy ACTIONS

..................................... NOTE - - -- - --- - --

Separate Condition entry is allowed for each Function.

CONDITION REQUIRED ACTION COMPETION TIME 1

A. One or more Functions A.1 - . . NOTE .-- --

with one !

train inopera e.

Place in d; protection mode if i

, automatic transfer y to M gas --

g j protection mode is inoperable. i Place train 7 days emer ,

j

[radi ion CN @FO ion] ) w-

4".g*bm

,,, ,. u o 4rttM n.

(continued)

WOf/ITS 3.3 55 Rev 1. 04/07/95 CaloWl e

4 5 Actuation Instrumentation 3.3.7 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME B. One or more Functions - - NOTE -- -

with (wo channe W Bb Place in the gas two trains inoperable. protection if i 5' I automatic transfer t I yt3lgFgas protection mode .

is inoperable.

w;

$.1 Q-oneGES train 'Immediately a

@.2 Enter applicable Immediately Conditions and Required Actions for L) RAV5 one @ train made inoperable by inoperable Q i

actuation instrumentation, jh- _

B.2 P1 e both trains in I ately /g rgency [radtation protection)sode/ j u

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 for Condi on A E or R nnt met. $

@f.~ P/ a.jor 4J C.2 Be in MODE 5. 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months (continued)

S 3.3 56 Rev 1. 04/07/95 CaN*

% tjcgg($ gMrWW MD A9k

I MS C Actuation Instrumentation 3.3.7 ACTIONS (continued) [

CONDITION

[ REQUIRED ACTI COMPLETION TIME D. Required Actio and El Suspend C Immediately l associated C letion ALTERATI Time for Co tion A ' y 3 $

w l

or B not me during NQ movement of irradiated -

fuel ass ies for D.I2 7' Suspend vesent of Immediat y i

' during C 'I f irradi ed fuel ALTERATI 1^ assemb tes.

1 E. Reg red Action and E.1 Ini iate action to I iately l

as ciated Completion re oreone.G f Ti for Condition A t din to OPERA 3 .

I o B not met in atus. ceny l

E 5 or 6. f '

I SURVEILLANCE REQUIREMENTS

..................................... NOTE - --- - - -- -- ---.-.... -. 1 Refer to Table 3.3.71 to determine which SRs apply for each _ Actuation Function.

SURVEILLANCE FREQUENCY h 3.3.7.1 PerfpriCHANNELCHECK. 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months SR 3.3.7.2 Perform COT. 92 ys (continued) 3.3 57 Rev 1. 04/07/95 CAL

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1 L.IC4Y/F AMOdM6W MNM J 0J

4 Actuation Instrumentation 8 3.3.7 h

BASES APPLICABLE AL IONS]. is the ry means to ensure trol SAFETY ANALYSES 3 bility in the of a fuel handling waste (continued) s tank ruoture ace . J GT4

! The Cuwaactuation instrumentation satisfies Criterion 3 of ge eg coocvatat==ne.

I WocFR m.w (Ref.th LCO The LCO requirements ensure that instrumentation necessary to initiate the CREyhis OPERABLE.

(C.rtav3)

1. ManualInitidon '

The L 1res two channels E. The operator can itiate the CREFS at any ti by using either of t switenes in the control . This action will ause actuation of all s in the same manner as any of the automatic a tion signals. ,

The LCO for Manual In ation ensures the proper amount of redundanc s maintained in the ma actuation circuit to ensure the operator manual initiation ity.

Each cha consists of one push and the inter ing wiring to the on logic caby

h. Automatic Actuation Looic and Actuation Relavs The LCO requires two trains of Actuation Logic and Relays OPERABLE to ensure that no single random failure can prevent automatic actuation.

Automatic Actuation Logic and Actuation Relays consist of the same features and operate in the same manner as descr w far rsFAS runction 1.b., SI. in LCO 3.3.2.

TheQapWearle suu anBspecified conditions for the

^^ .f' ,

g m uan or u w a runctions are different and i ess restrictive than those specified for their SI roles. If one or more of the SI functions becomes Qy inoperable in such a manner that only the CIEFSMCe.av5) function is affected, the Conditions ap their S1 function need not be entered. plicable The less to (continued)

W0 reds B 3.3 160 Rev 1. 04/07/95 cxwJs Y

Ocs* AMahfM6F 99r8P 4/to[18

. l CREf5 Actuation Instrumentation 8 3.3.7 g BASES LCO @f. Automatic Actuation Loaic and Actuation Relays (continued) hh rest ictive Actions specified Functions for inoperability specify sufficient compensatoryof the measures for this case, f3.

ControlRoomRaddion D The LCO fies two required Contml Atmosphere Radiation nitors and two required trol Room Air Intake fation Monitors to ensure t the radiation monit ing instrumentation necess y to initiate the CRE remains OPERABLE.

or sampling systems, chan OPERABILITY involves more than OPERABILITY of nnel electronics.

OPERABILITY may also r re correct valve lineup .

sample pump operation nd filter motor operatio , as well as detector ILITY, if these support features are nece ary for trip to occur t conditions ass by the safety analyses,

h. Safety Iniection Refer to LCO 3.3.2. Function 1. for all initiating Functions and requirements.

A APPLICABILITY F ions must be and duri LE in MODES 1. . 3. 4 CORE ALTERATIONS nd movement of ir adiated p{ fuel ass lies.p

@ The Functi must also be H0DEbl5 nd 6Ywhen requir for a waste gas cay tank LE in j

g ruptore ccident, to ensure habitable envi nt for the control room operators.

ACTI k oost cause of channel rability is outrig i

failure or ift of the bistable r process module sufficien o exceed the toler allowed by the uni l specifi calibration proce s. Typically, the de t is nd be small and res s in a delay of actua on rather (continued) 1 M B 3.3 161 Rev 1. 04/07/95 CodsM k CRAW A<:tuaEss znartran<,dth'.~ Fusas'ou not+ Lt DWW tw /AotNr.r I, A.,3, ad 4

everort ev%4 wtv.A an sr jal+6%,

.It t. 4. t dokY a vitme*i)*g, paMah*cm [Unc,bbA 6NS C8.AVI /s Mwe.8 a r.r 14%%, ~tk cMtr Ac%A. ru*vneduL rwAaa en+

k errvtA6t.r w),new r.r i t rejvireL e k ers7tAatr, 9: uca7ver amovexwr earn 4./w/11

l Actuation InstrumerCation B 3.3.7 BASES ACTIONS (continued)

B.l b and B.2 6S l Condition B applies _to the failure of two actuation i train two ratriation unoftor channen ne t#aanuaD anne sf. The first Required Action is to cLitP,one C M M in the "" r - y i m wr = .-- ^1orD A o operation ismediately. This ac lishes the actuation instrumentation Function that ma ve been lost and W't O Qthe unitYin a conservative mode of operation. The wu applicable Conditions and Required Actions of LCO 3.7.10 must also be entered for the CREfSttrain made inoperable by the inoperable actuation instrumentation. This ens appropriate limits are placed upon train inoperability as fe%)

discussed in the Bases for LCO 3.7.10.

fAlternative . both trains - be placed in the gencf

[radiat protection]. . This ensures FS un n is perfomed ven in the pres of a sg The Required Action for Condit on B is modified tiy a Note r that requires placing one train in the GD uas t CL M- 7 protectionmodeinsteadofthetraoiaponorotection}sode Prtuuwg of operation if the automatic transfer to@aai protection mode is inoperable. This ensures the raIfM&A t.4h ,

is placed in the most conservative mode of operation cc avQ s

\;

relative to the OPERABILITY of the associated actuation instrumentation.

I C.1 and C.2 Condition C applies when the Required Action and associ 8 Complefinn Tina f 3r Condition A or B have not been me erne un t' 1s in X)X 1. zr 3. or 4 a The unit must be brou t to a Mut. in whic1 the LCO requirements are not applicable.

To achieve this status, the unit must be brought to MODE 3 within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and MODE 5 within 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months . The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems.

(continued B 3.3 163 Rev 1. 04/07/95 a

Lt C6NW htAtt8MWI bhTEb 4fky

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Actuation Instrumentation B 3.3.7 h I BASES 1

ACTIONS

/

D.1 and 0.2 W )

(continued) ;

Co tion D applies when the Requir Action and associated !

letion Time for Condition A or have not been met i p ring CORE ALTERATIONS orf$he irradiated fuel assembli s h e being moved. Novesjent of ir adiated fuel assemblies

'and CORE ALTERATIONST aust be uspended immediatel to i

j reduce the risk of accidents at would require Av3 4 t hg u

condition E applies when he Required Action and as ciated Completion Time for Co tion A or B have not been t in MODE 5 or 6. Actions st be initiated to restere he inoperable train (s) t OPERABLE status immediatel to ensure adequate isolation c ability in the event of a w ste gas decay tank rupture, a

SURVEILLANCE A Note has been added to the SR Table to clarify that REQUIREMENTS Table 3.3.71 determines which SRs apply to which CgSD Actuation Functions. h

.1 7 Performance of CHANNEL CHECK once every 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months ensures that a gross f ilure of instnanentation h not occurred. A !

CHANNEL CHEC is normally a comparison o the parameter l indicated one channel to a similar rameter on other channels It is based on the assumpt that instrument channel monitoring the same appro mately the same value.parage bet Si r should read ficant deviations n the two instrument chan s could be an indication h .

of xcessive instrument drift i one of the channels or o thing even more serious. CHANNEL CHECK will det ross channel failure: thus. 't is key to verifying t instrumentation continues operate properly betwee each CHANNEL CALIBRATION.

Agreement criteria ar determined by the unit st f, based )

onacombinationophechannelinstrumentunce ainties, (continued)

M B 3.3-164 Rev 1, 04/07/95

+ uema anuoarop she

Attachment 2d Revised Improved Technical Specifications Conversion Sulmaittal Documentation for catawba Unit 2 l

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Specification 3.3.7 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME 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 for Alla Conditi:n A or a not 4k 900 1, 2 C.2 Be in MODE 5. 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months 1 I r D. Required Acti and D.1 Suspend CORE Inunediately 1 associated ALTERATIONS Completion me for .

Condition or B not AllD " 8 met durin movement

, of irrad ted fuel D.2 Suspend vement of Insnedi tely l assembi s or during irradi ed fuel CORE A 'ERATIONS. ass les. /

E. Re tred Action and E.1 itiate action to ninediately a ociated estore one CRAVS train )

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ondition A or B not I met in MODE 5 or 6.

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Discussicn of Ching2s Sc>cticn 3.3 - Instrumentaticn l TECHNICAL CHANGES - MORE RESTRICTIVE -

M.13 CTS Table 3.3-3 Action 16a for RWST level-low requires the inoperable channel to be placed in bypass and operation may continue. ITS 3.3.2 requires the channel to be placed in bypass within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . This chance is more restrictive since no time limit is specified in the CTS. When the CTS actions cannot be completed, an LC0 3.0.3 entry is required. ITS 3.3.2 adds a shutdown requirement if the actions cannot be met within the required Completion Time. The shutdown requirements are for the plant to be in mode 3 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and mode 5 within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . This change is more restrictive, because with the CTS LC0 3.0.3 requirement, one additional hour is allowed prior to beginning the shutdown. These changes are consistent with NUREG-1431.

M.14 Not used.

M.15 CTS Table 3.3-3 actions 16b and 29 is-we-entered when one channel l of the associated ESFAS Function is inoperable. When actions cannot be completed, an LC0 3.0.3 entry is required. ITS 3.3.2 ;

adds a shutdown requirement if the actions cannot be met within the required Completion Time. The shutdown requirements are for the plant to be in mode 3 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and mode 5 within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . This change is more restrictive, because with the CTS LC0 3.0.3 requirement, one additional hour is allowed prior to beginning the shutdown. This change is ,

consistent with NUREG-1431.

M.16 Not used.

M.17 Not used.

M.18 Not used. CTS 3.3.2 Contrcl Room Arc; Ventilation Operation is applicable in all mcdc;. ITS 3.3.7 add: the applicability of "during movement of irradiated fuel ::cmblic " and "During CORE ALTERATIONS" to cover thc;c time; when a potential accident could occur. Fuel handling-accidents are events that could cause radiation level; 10 ri;c in the contrcl recm. Other related changc; involve action; to alleviate the:c pctential h=ard; aith i varicu; 1 cycle of Control Room ventilation degradation. The:c ;

ehange in ITS 3.3.7 are additional rc triction; placed en the l plant and are con idered more rc trictivc. This change is cen;istent with NUREC-1431. I i

Catawba Units 1 and 2 Page M - 4 4/20/98 ppIcment 15/20/07l

Discussien of Changss Szcticn 3.3 - Instrumentatien TECHNICAL CHANGES - MORE RESTRICTIVE M.19 CTS 3.3.2 Action 24 specifies no subsequent actions if the required actions cannot be met. ITS 3.3.7 will require the plant to be placed in mode 3 in 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and mode 5 in 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months if the actions are not met in =cde: 1-4. This action is prudent because in =cde: 1, 2, 3, and 4, protection is required to mair,tain the control room habitable for the operators in case of a LOCA. The CTS would require an LC0 3.0.3 entry in this case, which would I require the plant to be in mode 5 in 37 hours4.282407e-4 days 0.0103 hours 6.117725e-5 weeks 1.40785e-5 months . This change is j slightly more restrictive since it allows one less hour to reach mode 5. f the action; are net met in mcde: 5 :nd 5, TS 3.3.7 require; that action be initiated ic rc;terc en: CRfNS actuation train to cperable :tatu;. Thi; action i; prudent since control rec habitability i; required for an accidental rele : cf radiation frcm a fuel handlin;; accident. The CTS LCO 3.0.3 dce; not prcvide any action; in thc;c mcde;, therefore, thi; "icn i; mere restrict 4e---This change is consistent with NUREG-W1.

M.20 CTS 3.3.2 Action 16 does not specify a time to place an inoperable containment pressure high-high in the bypassed condition. ITS 3.3.2 requires 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months to complete the action. This change is more restrictive since a completion time was not previously specified. This change is consistent with NUREG-1431.

M.21/M.22 Not used.

M.23 CTS Table 3.3-10 and 4.3-7 for accident monitoring instrumentation have been revised to include wide range neutron flux monitors, containment isolation valve position, and steam gereerator water level (wide range) indicators. These variables are included in ITS 3.3.3 because they identified as RG 1.97 category 1 variables in UFSAR Table 1-11. This table also identifies nuclear service !

water to AFW system valve position and condensate to AFW system valve position as category 1 variables, however, these functions are not included since AFW flow indicators are the type A category 1 variable already contained within the TS to indicate AFW assured source.

lCatawbaUnits1and2 Page M - 5 4/20/98 pplement 15/20/97

1 0

i Reprinted Improved Technical Specifications Pages I

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CRAVS Actuation Instrumentation 3.3.7 3.3 INSTRUMENTATION 3.3.7 Control Room Area Ventilation System (CRAVS) Actuation Instrumentation LC0 3.3.7 The CRAVS actuation instrumentation for each Function in Table 3.3.7-1 shall be OPERABLE.

l APPLICABILITY: MODES 1, 2, 3, and 4.

ACTIONS

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

Separate Condition entry is allowed for each Function.

CONDITION REQUIRED ACTION _ COMPLETION TIME A. One or more Functions A.1 --------NOTE--------

with one train Place in chlorine gas inoperable. protection mode if automatic transfer to chlorine gas protection mode is inoperable.

Place the CRAVS train 7 days with inoperable actuation train in operation.

(continued) l l Catawba Unit 2 3.3-48 4/20/98

CRAVS Actuation Instrumentation 3.3.7 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME B. One or more functions ------------NOTE-------------

with two trains Place in the chlorine gas inoperable. protection mode if automatic transfer to chlorine gas protection mode is inoperable.

B.1 Verify one CRAVS Immediately l train is in !

operation.

AND

]

B.2 Enter applicable Immediately Conditions and Required Actions for one CRAVS train made inoperable by inoperable CRAVS actuation instrumentation.

I 1

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 for Condition A AND ,

or B not met. l C.2 Be in MODE 5. 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months I

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Catawba Unit 2 3.3-49 4/20/98 l

CRAVS Actuation Instrumentation 3.3.7 SURVEILLANCE _ REQUIREMENTS-

NOTE-----------------------_-----_--__---

Refer to Table 3.3.7-1 to determine which SRs apply for each CRAVS Actuation Function.

l SURVEILLANCE FREQUENCY 4

SR 3.3.7.1 Perform ACTUATION LOGIC TEST. 31 days on a STAGGERED TEST BASIS SR 3.3.7.2 Perform MASTER RELAY TEST. 31 days on a STAGGERED TEST BASIS SR 3.3.7.3 Perform SLAVE RELAY TEST. 92 days i i

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l Catawba Unit 2 3.3-50 4/20/98

CRAVS Actuation Instrumentation B 3.3.7 BASES LC0 1. Automatic Actuation Loaic and Actuation Relavs (continued) .

1 Automatic Actuation Logic and Actuation Relays consist of the same features and operate in the same manner as described for ESFAS Function 1.b., SI, in LC0 3.3.2.

The specified conditions for the CRAVS portion of l these functions are different and less restrictive than those specified for their SI roles. If one or more of the SI functions becomes inoperable in such a manner that only the CRAVS function is affected, the Conditions applicable to their SI function need not be entered. The less restrictive Actions specified for inoperability of the CRAVS Functions specify sufficient compensatory measures for this case.

2. Safety In.iection Refer to LC0 3.3.2, Function 1, for all initiating !

Functions and requirements.

I APPLICABILITY The CRAVS Actuation Instrumentation Functions must be OPERABLE in MODES 1, 2, 3, and 4 to support automatic actuation on SI initiation. Since the only automatic actuation function of the CRAVS is due to a SI initiation, ,

the CRAVS Actuation Instrumentation Functions must be !

OPERABLE whenever SI is required to be OPERABLE.

ACTIONS A Note has been added to the ACTIONS indicating that separate Condition entry is allowed for each Function. The Conditions of this Specification may be entered independently for each Function listed in Table 3.3.7-1 in the accompanying LCO. The Completion Time (s) of the inoperable channel (s)/ train (s) of a Function will be tracked separately for each Function starting from the time the Condition was entered for that Function.

(continued)

Catawba Unit 2 8 3.3-143 4/20/98 l

f CRAVS Actuation Instrumentation B 3.3.7 BASES ACTIONS B.1 and B.2 (continued)

The Required Action for Condition B is modified by a Note that requires placing the CRAVS train in the chlorine gas protection mode instead of the pressurized mode of operation if the automatic transfer to chlorine gas protection mode is inoperable. This ensures the CRAVS train is placed in the most conservative mode of operation relative to the OPERABILITY of the associated actuation instrumentation.

C.1 and C.2 Condition C applies when the Required Action and associated Completion Time for Condition A or B have not been met. The l unit must be brought to a MODE in which the LC0 requirements are not applicable. To achieve this status, the unit must be brought to MODE 3 within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and MODE 5 within 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months . The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems.

I I

SURVEILLANCE A Note has been added to the SR Table to clarify that l REQUIREMENTS Table 3.3.7-1 determines which SRs apply to which CRAVS l Actuation Functions. '

SR 3.3.7.1 SR 3.3.7.1 is the performance of an ACTUATION LOGIC TEST. i The train being tested is placed in the bypass condition, !

thus preventing inadvertent actuation. Through the semiautomatic tester, all possible logic combinations, with and without applicable permissives, are tested for each protection function. In addition, the master relay coil is pulse tested for continuity. This verifies that the logic modules are OPERABLE and there is an intact voltage signal ;

path to the master relay coils. This test is performed l every 31 days on a STAGGERED TEST BASIS. The Frequency is justified in WCAP-10271-P-A, Supplement 2, Rev.1 (Ref. 2).

(continued)

Catawba Unit 2 B 3.3-145 4/20/98 l

CRAVS Actuation Instrumentation B 3.3.7 BASES SURVEILLANCE SR 3.3.7.2 REQUIREMENTS (continued) SR 3.3.7.2 is the performance of a MASTER RELAY TEST. The MASTER RELAY TEST is the energizing of the master relay, berifying contact operation and a low voltage continuity check of the slave relay coil. Upon master relay contact operation, a low voltage is injected to the slave relay coil. This voltage is insufficient to pick up the slave relay, but large enough to demonstrate signal path continuity. This test is performed every 31 days on a STAGGERED TEST BASIS. The Frequency is acceptable based on instrument reliability and industry operating experience.

SR 3.3.7.3 SR 3.3.7.3 is the performance of a SLAVE RELAY TEST. The SLAVE RELAY' TEST is the energizing of the slave relays.

Contact operation is verified in one of two ways. Actuation equipment that may be operated in the design mitigation MODE is either allowed to function or is placed in a condition where the relay contact operation can be verified without operation of the equipment. Actuation equipment that may not be operated in the design mitigation MODE is prevented I from operation by the SLAVE RELAY TEST circuit. For this latter case, contact operation is verified by a continuity check of the circuit containing the slave relay. This test is performed every 92 days. The Frequency is acceptable based on instrument reliability and industry operating experience.

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(continued) l Catawba Unit 2 B 3.3-146 4/20/98

CRAVS Actuation Instrumentation B 3.3.7 BASES (continued)

REFERENCES 1. 10 CFR 50.36, Technical Specifications, (c)(2)(ii).

2. WCAP-10271-P-A, Supplement 2, Rev. 1, June 1990.

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Catawba Unit 2 B 3.3-147 4/20/98 l

Revised NUREG-1431 Marked-up Pages (THIS TAB IS NOT APPLICABLE TO UNIT 2, SINCE THERE ARE NO CHANGES FROM UNIT 1) l

)

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Attachment 3 Description of Proposed Changes and Technical Justification l

Description of Proposed Changes The Control Room Area Ventilation System is designed to maintain the environment in the Control Room and Control Room Area within acceptable limits for the operation of unit controls, for maintenance and testing of the controls as required, and for uninterrupted safe occupancy of the Control Room during post-accident shutdown. This function is accomplished by pressurizing the Control Room to greater than or equal to 1/8 inch water gauge with respect to all surrounding areas, by filtering the outside air used for pressurization, by filtering a portion of the return air from the Control Room to clean up the Control Room environment, and by maintaining the Control Room temperature I less than 90 degrees F. The system is comprised of two redundant trains so that it will be able to perform its j required function in the event that a single failure disables one train.

The ESFAS uses selected plant parameters to determine whether or not predetermined safety limits are exceeded. If limits are exceeded, the system combines the signals into logic matrices sensitive to combinations indicative of accident conditions. Once the required logic combination is completed, the system sends actuation signals to the appropriate Engineered Safety Features components, including those in the Control Room Area Ventilation System. In the l event of a Safety Injection initiation, the ESFAS will cause an autcmatic start of the non-running Control Room Area Ventilation System pressure filter train.

Technical Specification 3/4.3.2, Tables 3.3-3 and 4.3-2 l delineate operability and surveillance requirements, respectively, for that portion of the ESFAS which actuates the Control Room Area Ventilation System. Functional unit lla (Automatic Actuation Logic and Actuation Relays) states that two channels of the subject instrumentation are required operable in all modes of plant operation. The l surveillance requirements for this functional unit are a monthly actuation logic test (on a staggered test basis), a monthly master relay test (on a staggered test basis), and a j quarterly slave relay test. The Technical Specifications !

stipulates that these surveillances are required in all modes of plant operation.

Technical Specification 3/4.3.2, Tables 3.3-3 and 4.3-2 are modified to change the LCO and SR mode requirements from All Modes to Modes 1 through 4. The system operability requirements for the Control Room Area Ventilation System, delineated in Technical Specification 3/4.7.6, which ;

requires the system to be operable in all modes, are unaffected by this proposed amendment.

As indicated in the cover letter for this amendment request, commensurate changes are also being proposed for all relevant documentation associated with the Improved Technical Specifications conversion submittal for Catawba.

These changes are being supplied to facilitate the NRC review of the conversion submittal.

Technical Justification The Technical Specifications for functional unit 11a incorrectly specify that the LCO and SR requirements are applicable in all modes of plant operation. The only relationship between automatic actuation of the Control Room Area Ventilation System and the ESFAS is through Safety Injection initiation. If a Safety Injection initiation occurs, it will cause an automatic start of the non-running Control Room Area Ventilation System pressure filter train.

The ESFAS requirements for Safety Injection initiation are correctly specified in Technical Specifications Tables 3.3-3 and 4.3-2 as being applicable in Modes 1 through 4 in functional unit lic. The mode requirements for the Automatic Actuation Logic and Actuation Relays in functional unit lla conflict with the mode requirements for the Safety Injection initiation function in functional unit 11c, The mode requirements for both functional units lla and 11c should be consistent and require the LCO and SR to be applicable only in Modes 1 through 4.

Catawba LER 50-413/98-004 describes the event where the above described inconsistency in mode requirements for this Technical Specification was discovered.

I Attachment 4 No Significant Hazards Consideration Determination i

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No Significant Hazards Consideration Determination The following discussion is a summary of the evaluation of the changes contained in this proposed amendment against the 10 CFR 50.92(c) requirements to demonstrate that all three standards are satisfied. A no significant hazards consideration is indicated if operation of the facility in accordance with the proposed amendment would not:

1. Involve a significant increase in the probability or consequences of an accident previously evaluated, or

2. Create the possibility of a new or different kind of accident from any accident previously evaluated, or

3. Involve a significant reduction in a margin of safety.

First Standard Ir: 1.ementation of this amendment would not involve a s .4 : 'ficant increase in the probability or consequences of

r. - cident previously evaluated. The Control Room Area

.ilation System and ESFAS are not accident initiating syatems; they are accident mitigating systems. Therefore, changing the mode requirements for the subject ESFAS functional unit cannot impact accident initiating probabilities. The technical justification associated with this proposed amendment shows that the current Technical Specification mode requirements for the subject functional unit are incorrect as written. The Control Room Area Ventilation System and ESFAS will remain fully capable of performing their design accident mitigation functions for the modes in which they are required. The Control Room Area Ventilation System operability requirement of Technical Specification 3/4.7.6 will continue to be met. Therefore, no accident consequences will be impacted.

Second Standard Implementation of this amendment would not create the possibility of a new or different kind of accident from any accident previously evaluated. As noted previously, the Control Room Area Ventilation System and ESFAS are not accident initiating systems. Correcting the mode requirements as specified will not impact any plant systems that are accident initiators. No other modifications are being proposed to the plant which would result in the creation of new accident mechanisms. Also, no changes are being made to the way in which the plant is operated, so no new failure mechanisms will be initiated.

.e Third Standard Implementation of this amendment would not involve a significant reduction in a margin of safety. Margin of safety is related to the confidence in the ability of the fission product barriers to perform their design functions during and following an accident situation. These barriers include the fuel cladding, the reactor coolant system, and the containment system. The performance of the fission product barriers will not be impacted by implementation of this proposed amendment. Both the Control Room Area Ventilation System and the ESFAS will remain fully capable of performing their design functions for the modes in which they are required. Therefore, no safety margin will be '

significantly impacted.

Based upon the preceding analysis, Duke has concluded that the proposed amendment does not involve a significant hazards consideration.

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.o Environmental Analysis Pursuant to 10 CFR 51.22(b), an evaluation of this license amendment request has been performed to determine whether or not it meets the criteria for categorical exclusion set forth in 10 CFR 51.22(c)(9) of the regulations.

This amendment to the Catawba Unit 1 and 2 Technical Specifications allows for a correction of the LCO and SR mode requirements for the Automatic Actuation Logic and Actuation Relays associated with Control Room Area Ventilation System operation. Implementation of this amendment will have no adverse impact upon the Catawba units; neither will it contribute to any additional quantity or type of effluent being available for adverse environmental impact or personnel exposure.

It has been determined there is:

1. No significant hazards consideration,

2. No significant change in the types, or significant increase in the amounts, of any effluents that may be released offsite, and

3. No significant increase in individual or cumulative occupational radiation exposures involved.

Therefore, this amendment to the Catawba Technical Specifications meets the criteria of 10 CFR 51.22 (c) (9) for categorical exclusion from an environmental impact statement.

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