Text

License Amendment Request, Incorporation of Previously NRC-Approved Generic Technical Specification Changes - Submittal of Camera Ready Technical Specification Pages
	ML053560185
Person / Time
Site:	Peach Bottom
Issue date:	12/21/2005
From:	Cowan P; Exelon Nuclear
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	Download: ML053560185 (192)
	v • d • e

10 CFR 50.90 December 21,2005 United States Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Peach Bottom Atomic Power Station, Units 2 & 3 Facility Operating License Nos. DPR-44 and DPR-56 NRC Docket Nos. 50-277 and 50-278

Subject:

License Amendment Request Incorporation of Previously NRC-Approved Generic Technical Specification Changes - Submittal of Camera Ready Technical Specification Pages

Reference:

Letter from M. P. Gallagher (Exelon Generation Company, LLC) to U. S. Nuclear Regulatory Commission, dated June 24, 2004 In the referenced letter, Exelon Generation Company, LLC (EGC) requested proposed changes to incorporate various previously NRC-approved Technical Specification Task Force travelers (TSTFs). Attached are the camera ready pages for issuance as of the date of this letter.

As discussed in the referenced letter, upon approval, we request 90 days to implement this change. No regulatory commitments are contained in this request.

If you have any questions or require additional information, please contact Tom Loomis at (610) 765-5510.

I declare under penalty of perjury that the foregoing is true and correct.

Respectfully, Executdd (3-1 Director, Licensing & Regulatory Affairs Exelon Generation Company, LLC

Enclosure:

Attachment A - Camera Ready Technical Specification Pages cc: S. J. Collins, Administrator, Region I, USNRC F. Bower, USNRC Senior Resident Inspector, PBAPS G. Wunder, Senior Project Manager, USNRC R. R. Janati - Commonwealth of Pennsylvania

ATTACHMENT A PBAPS Incorporation of Generic NRC-Approved Technical Specification Task Force Travelers (TSTFs)

Camera Ready Technical Specification Pages

SLS 2.0 2.0 SAFETY L I M I T S ( S L s )

2.1 SLS 2.1.1 R e a c t o r Core SLs 2.1.1.1 W i t h t h e r e a c t o r steam dome p r e s s u r e c 785 p s i g o r c o r e f l o w < 10% r a t e d c o r e f l o w :

THERMAL POWER s h a l l be 5 25% RTP.

2.1.1.2 W i t h t h e r e a c t o r steam dome p r e s s u r e 2 785 p s i g and c o r e f l o w 2 10% r a t e d c o r e f l o w :

MCPR s h a l l be 2 1.07 f o r t w o r e c i r c u l a t i o n l o o p o p e r a t i o n o r z 1.09 f o r s i n g l e r e c i r c u l a t i o n l o o p o p e r a t i o n .

2.1.1.3 R e a c t o r v e s s e l w a t e r l e v e l s h a l l be g r e a t e r t h a n t h e t o p o f active irradiated fuel.

2.1.2 Reactor Coo 1 a n t S v s tem P r e s s u r e SL R e a c t o r steam dome p r e s s u r e s h a l l be I 1325 p s i g .

2.2 SL V i o l a t i o n s W i t h any SL v i o l a t i o n , t h e f o l l o w i n g a c t i o n s s h a l l be c o m p l e t e d w i t h i n 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months s: J 2.2.1 R e s t o r e compliance w i t h a l l SLs; and 2.2.2 I n s e r t a l l i n s e r t a b l e c o n t r o l rods.

(continued)

PBAPS U N I T 2 2.0-1 Amendment No.

SLS 2.0 2.0 S L S PBAPS UNIT 2 2.0-2 Amendment No.

LCO Appl i cabi 1 i t y 3.0 3.0 LIMITING CONDITION FOR OPERATION ( L C O ) A P P L I C A B I L I T Y LCO 3.0.1 LCOs shall be met during the MODES or other specified conditions in the A p p l i c a b i l i t y , except as provided in LCO 3.0.2 a n d LCO 3 . 0 . 7 .

LCO 3.0.2 Upon discovery of a f a i l u r e t o meet a n LCO, the Required Actions of the associated Conditions s h a l l be met, except as provided in LCO 3.0.5 a n d LCO 3.0.6.

I f the LCO i s met or i s no longer applicable p r i o r t o expiration of the specified Completion Time(s), completion of the Required Action(s) i s n o t required, unless otherwise stated.

LCO 3.0.3 When a n LCO i s n o t met a n d the associated ACTIONS a r e n o t met, a n associated ACTION i s n o t provided, or i f directed by the associated ACTIONS, the u n i t s h a l l be placed in a MODE or other specified condition i n which t h e LCO i s n o t applicable. Action shall be i n i t i a t e d within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months t o place the u n i t , as applicable, i n :

a. MODE 2 within 10 hours1.157407e-4 days 0.00278 hours 1.653439e-5 weeks 3.805e-6 months ;

b. MODE 3 within 13 hours1.50463e-4 days 0.00361 hours 2.149471e-5 weeks 4.9465e-6 months ; a n d

c. MODE 4 within 37 hours4.282407e-4 days 0.0103 hours 6.117725e-5 weeks 1.40785e-5 months .

Exceptions t o t h i s Specification a r e s t a t e d in the i ndi vidual S p e c i f i c a t i o n s ,

Where c o r r e c t i v e measures a r e completed t h a t permit operation in accordance with the LCO or ACTIONS, completion o f the actions required by LCO 3.0.3 i s n o t required.

LCO 3.0.3 i s on7y applicable in MODES 1, 2 , and 3.

LCO 3.0.4 When a n LCO i s n o t met, entry i n t o a MODE or other s p e c i f i e d condition in the Applicability s h a l l only be made:

a. When the associated ACTIONS t o be entered permit continued operation i n the MODE or other specified condition in t h e Applicability f o r a n unlimited period of time;

b. After performance of a r i s k assessment addressing inoperable systems a n d components, consideration of the r e s u l t s , determination of the acceptabi 1 i t y of (continued)

PBAPS UNIT 2 3.0-1 Amendment No.

C o n t r o l Rod Scram Times 3.1.4 3.1 R E A C T I V I T Y CONTROL SYSTEMS 3.1.4 C o n t r o l Rod Scram Times LCO 3.1.4 a. No more t h a n 13 OPERABLE c o n t r o l r o d s s h a l l be " s l o w , "

i n accordance w i t h T a b l e 3 . 1 . 4 - 1 ; and

b. No more t h a n 2 OPERABLE c o n t r o l r o d s t h a t a r e "slow" s h a l l occupy a d j a c e n t l o c a t i o n s .

APPLICABILITY: MODES 1 and 2.

ACTIONS CONDITION REQUIRED ACTION COMPLETION T I M E A. Requirements o f t h e A. 1 Be i n MODE 3. 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months LCO n o t met.

SURVEILLANCE REQUIREMENTS I I Prior t o I SR 3.1.4.1 V e r i f y each c o n t r o l r o d scram t i m e i s w i t h i n t h e l i m i t s o f Table 3.1.4-1 w i t h exceeding r e a c t o r steam dome p r e s s u r e 2 800 p s i g . 40% RTP a f t e r each r e a c t o r shutdown 2 120 days (continued)

PBAPS U N I T 2 3.1-12 Amendment No.

C o n t r o l Rod Scram Times 3.1.4 SURVEILLANCE R E Q U I R E ~ E N T S SURVEILLANCE FREQUENCY SR 3.1.4.2 V e r i f y , f o r a r e p r e s e n t a t i v e sample, each 120 days t e s t e d c o n t r o l r o d scram t i m e i s w i t h i n t h e cumulative l i m i t s o f T a b l e 3 . 1 . 4 - 1 w i t h r e a c t o r steam operation i n dome p r e s s u r e 2 800 p s i g . MODE 1

~-

SR 3.1.4.3 V e r i f y each a f f e c t e d c o n t r o l rod scram t i m e Prior t o i s w i t h i n t h e l i m i t s o f Table 3.1.4-1 w i t h d e c l a r i ng any r e a c t o r steam dome p r e s s u r e . control rod OPERABLE a f t e r work on c o n t r o l r o d o r CRD System t h a t could a f f e c t scram t i m e SR 3.1.4.4 V e r i f y each a f f e c t e d c o n t r o l r o d scram t i m e Prior t o i s w i t h i n t h e l i m i t s o f Table 3.2.4-1 w i t h exceeding r e a c t o r steam dome p r e s s u r e 2 800 p s i g . 40% RTP a f t e r d o r k on c o n t r o l r o d o r CRD Jys tem t h a t

auld a f f e c t scram t i m e

'rior t o

? x c e e d ing 40%

{TP a f t e r f u e l novement w i t h i n

he a f f e c t e d

ore c e l l I PBAPS UNIT 2 3.1-13 Amendment No.

SDV V e n t and D r a i n V a l v e s 3.1.8 3.1 REACTIVITY CONTROL SYSTEMS 3.1.8 Scram D i s c h a r g e Volume ( S D V ) V e n t and D r a i n V a l v e s LCO 3.1.8 Each SDV v e n t and d r a i n v a l v e s h a l l b e OPERABLE.

APPLICABILITY: MODES 1 and 2 .

ACTIONS

2. An i s o l a t e d l i n e may b e u n i s o l a t e d u n d e r a d m i n i s t r a t i v e c o n t r o l t o a l l o w d r a i n i n g and v e n t i n g o f t h e SDV.

CONDITION REQUIRED ACTION COMPLETION TIME A. One or more SDV v e n t A.l Isolate the 7 days or drain lines with associated l i n e .

one v a l v e i n o p e r a b l e .

B. One o r m o r e SDV v e n t B. 1 Isolate the 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months or drain lines with associated l i n e .

both valves inoperable.

C. R e q u i r e d A c t i o n and c.1 Be i n MODE 3. 12 h o u r s associated Completion Time n o t m e t .

PBAPS UNIT 2 3.1-26 Amendment No.

MCPR 3.2.2 SURVEILLANCE REQUIRE~ENTS ( c o n t i n u e d )

FREQUENCY SR 3.2.2.2 D e t e r m i n e t h e MCPR l i m i t s . Once w i t h i n 72 h o u r s a f t e r each c o m p l e t i o n o f S R 3.1.4.1 Once w i t h i n 72 h o u r s a f t e r each c o m p l e t i o n o f SR 3.1.4.2

-.AND Once w i t h i n 72 h o u r s a f t e r each cornpl e t i on o f SR 3.1.4.4 PBAPS UNIT 2 3.2-3 Amendment No.

Feedwater and M a i n T u r b i n e H i g h Water L e v e l T r i p I n s t r u m e n t a t i o n 3.3.2.2 3.3 INSTRUMENTAT ION 3.3.2.2 F e e d w a t e r and M a i n T u r b i n e H i g h Water L e v e l T r i p I n s t r u m e n t a t i o n LCO 3.3.2.2 Two c h a n n e l s p e r t r i p s y s t e m o f t h e D i g i t a l Feedwater C o n t r o l System (DFCS) h i g h w a t e r l e v e l t r i p i n s t r u m e n t a t i o n F u n c t i o n s h a l l b e OPERABLE.

APPLICABILITY: THERMAL POWER 2 25% RTP.

ACT ION S CONDITION R E Q U I R E D ACTION COMPLETION TIME A. One o r more DFCS h i g h A.1 Place channel i n 72 h o u r s water l e v e l t r i p trip.

c h a n n e l s in o p e r a b l e .

B. DFCS h i g h w a t e r l e v e l B.l R e s t o r e DFCS h i g h 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months t r i p capability not w a t e r 1 eve1 t r i p m a i n t a i ned. c a p a b i 1 it y .

I I I I C. R e q u i r e d A c t i o n and c.1 --------NOTE--------

associ ated Completion Only a p p l i c a b l e i f Time n o t m e t . in o p e r a b l e c h a n n e l is the result o f inoperable feedwater pump t u r b i n e o r m a i n turbine stop valve.

Remove a f f e c t e d 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months f e e d w a t e r pump(s) and main t u r b i n e v a l v e ( s )

from service.

c.2 Reduce THERMAL POWER 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months I t o < 25% RTP.

I I PBAPS UNIT 2 3.3-22 Amendment No.

PAM Instrumentation 3.3.3.1 Table 3.3.3.1-1 (page 1 of 1)

Post Accident Monitoring Instrumentation CONDITIONS REFERENCED REQUIRED FROM REQU I RED FUNCTION CHANNELS ACTION D . l

1. Reactor Pressure 2

2. Reactor Vessel Water Level (Wide Range) 2

3. Reactor Vessel Water Level (Fuel Zone) 2

4. Suppression Chamber Water Level Wide Range) 2

5. Drywell Pressure (Wide Range) 2

6. Drywell Pressure (Subatmospheric Range) 2

7. Drywell High Range Radiation 2

8. Penetration Flaw P a t h P C I V Position 2 per penetration flow pat., ( a ) ( b )

9. Deleted

10. Deleted

11. Suppression Chamber Water Temperature (a) Not required f o r isolation valves whose associated penetration flow p a t h f s isolated by a t l e a s t one closed and deactivated automatic valve, closed manual valve, b l i n d flange, or check valve w i t h flow through the valve secured.

(b) Only one position indication channel i s required f o r penetration flow paths with only one i n s t a l l e d control room indication channel.

(c) Each channel requires 10 resistance temperature detectors (RTDs) t o be OPERABLE w i t h no two adjacent RTDs inoperable.

PBAPS U N I T 2 3.3-26 Amendment No.

ATWS-RPT I n s t r u m e n t a t i o n 3.3.4.1 ACTIONS (continued1 CONDITION R E Q U I R E D ACTION COMPLETION T I M E B. One F u n c t i o n w i t h B.l R e s t o r e ATWS-RPT t r i p 72 h o u r s ATWS- RPT t r i p c a p a b i 1 it y .

capabil i t y not m a i n t a i ned.

C. Both Functions w i t h c.1 R e s t o r e ATWS-RPT t r i p 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months ATWS - RPT t r i p c a p a b i l i t y f o r one capability not Function.

ma in t a ined .

D. R e q u i r e d A c t i o n and D.l --------NOTE--------

associated Completion Only a p p l i c a b l e i f Time n o t met. in o p e r a b l e channel is t h e r e s u l t o f an in o p e r a b l e RPT breaker .

Remove t h e a f f e c t e d 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months I r e c i r c u l a t i o n pump f r o m s e r v i ce.

D.2 Be i n MODE 2. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months SURVEILLANCE REQUIREMENTS SURVEILLANCE I FREQUENCY SR 3.3.4.1.1 P e r f o r m CHANNEL CHECK. 12 h o u r s PBAPS U N I T 2 3.3-30 Amendment No.

EOC-RPT I n s t r u m e n t a t i o n 3.3.4.2 3.3 INSTRUMENTATION 3.3.4.2 End o f C y c l e R e c i r c u l a t i o n Pump T r i p (EOC-RPT) I n s t r u m e n t a t i o n LCO 3.3.4.2 a. Two c h a n n e l s p e r t r i p system f o r each EOC-RPT i n s t r u m e n t a t i o n F u n c t i o n l i s t e d below s h a l l be OPERABLE:

1. T u r b i n e Stop V a l v e ( T S V ) - - C l o s u r e ; and

2. T u r b i n e C o n t r o l Valve ( T C V ) F a s t C l o s u r e , T r i p O i 1 P r e s s u r e - Low.

ss

b. The f o l l o w i n g l i m i t s a r e made a p p l i c a b l e :

1. LCO 3.2.1, "AVERAGE PLANAR LINEAR HEAT G E N E R A T I O N RATE (APLHGR)," l i m i t s f o r i n o p e r a b l e EOC-RPT as s p e c i f i e d i n t h e COLR; and

2. LCO 3.2.2, " M I N I M U M CRITICAL POWER R A T I O ( M C P R ) , "

l i m i t s f o r i n o p e r a b l e EOC-RPT a s s p e c i f i e d i n t h e COLR.

APPLICABILITY: THERMAL POWER 2 29.5% RTP.

ACTIONS CO~DITION I

I I

R E Q U I R E D ACTION I

I COMPLETION T I M E A. One o r more r e q u i r e d A.l R e s t o r e channel t o 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months channel s in o p e r a b l e. OPERABLE s t a t u s .

A.2 --------NOTE---------

Not a p p l icab1 e i f in o p e r a b l e channel is t h e r e s u l t o f an in o p e r a b l e b r e a k e r .

P l a c e channel i n 72 h o u r s trip.

( c o n t inued 1 PBAPS U N I T 2 3.3-31a Amendment No.

EOC-RPT I n s t r u m e n t a t i o n 3.3.4.2 ACTIONS (continued)

I CONDITION REQUIRED ACTION COMPLETION T I M E B. One o r more F u n c t i o n s B.1 R e s t o r e EOC-RPT t r i p 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months w i t h EOC-RPT t r i p capability.

capabi 1 it y n o t maintained.

C. R e q u i r e d A c t i o n and c.1 ---------NOTE--------

a s s o c i a t e d Compl e t i on Only a p p l i c a b l e i f Time n o t met. in o p e r a b l e channel i s t h e r e s u l t o f an i n o p e r a b l e RPT breaker.

Remove t h e a f f e c t e d 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months r e c i r c u l a t i o n pump f r o m s e r v i ce.

c.2 Reduce THERMAL POWER 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months t o < 29.5% RTP.

SURVEILLANCE R E Q U I R E ~ E ~ T S

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

When a channel i s p l a c e d i n an i n o p e r a b l e s t a t u s s o l e l y f o r p e r f o r m a n c e o f r e q u i r e d S u r v e i l l a n c e s , e n t r y i n t o a s s o c i a t e d C o n d i t i o n s and R e q u i r e d A c t i o n s may be d e l a y e d f o r up t o 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months p r o v i d e d t h e a s s o c i a t e d F u n c t i o n m a i n t a i n s EOC-RPT t r i p c a p a b i l i t y .

SURVEILLANCE FREQUENCY SR 3.3.4.2.1 P e r f o r m CHANNEL FUNCTIONAL TEST. 92 days

( c o n t i nued 1 PBAPS UNIT 2 3.3-31b Amendment No,

ECCS Instrumentation 3.3.5.1 T a b l e 3.3.5.1-1 (page 1 o f 5 )

Emergency Core C o o l i n g System I n s t r u m e n t a t i o n APPLICABLE CONDITIONS MODES REQUIRED REFERENCED OR OTHER CHANNELS FROM SPEC I F I ED PER REQUIRED SURVEILLANCE ALLOWABLE FUNCTION CONDITIONS FUNCTION ACTION A . 1 REQUIREMENTS VALUE

1. Core Spray System Reactor Vessel Water 1,2,3, 4(b) B SR 3.3.5.1.1 L -160.0 Level -Low Low Low SR 3.3.5.1.2 inches (Level 1 ) 4(a), 5(a) SR 3.3.5.1.4 SR 3.3.5.1.5 Drywell B SR 3.3.5.1.1 5 2.0 p s i g Pressure -High SR 3.3.5.1.2 SR 3.3.5.1.4 SR 3.3.5.1.5 Reactor P r e s s u r e - L o w 1,2,3 4 C SR 3.3.5.1.1 L 425.0 p s i g

( I n j e c t i o n Permissive) SR 3.3.5.1.2 and SR 3.3.5.1.4 I 475.0 p s i g SR 3.3.5.1.5 4 B SR 3.3.5.1.1 2 425.0 p s i g SR 3.3.5.1.2 and SR 3.3.5.1.4 5 475.0 p s i g SR 3.3.5.1.5

d. Core Spray Pump 1,2,3, E SR 3.3.5.1.2 L 319.0 p s i d D i s c h a r g e Flow -Low SR 3.3.5.1.4 and (Bypass 1 41a), 5 ( a ) I 351.0 p s i d

e. Core Spray Pump S t a r t - 1,2,3 C SR 3.3.5.1.4 2 5.0 seconds Time Delay Relay ( l o s s SR 3.3.5.1.5 and o f o f f s i t e power) 4(a), 5(a) 5 7.0 seconds

f. Core Spray Pump S t a r t -

Time Delay Relay

( o f f s i t e power a v a i 1a b l e )

Pumps A,C 1,2,3 2 C SR 3.3.5.1.4 2 12.1

( 1 per SR 3.3.5.1.5 seconds and 4(a), 5(a) pump) d 13.9 seconds Pumps B,D 1,2,3 2 C SR 3.3.5.1.4 2 21.4 (1 per SR 3.3.5.1.5 seconds and 4(a), 5 ( a ) pump) s 24.6 seconds (continued)

( a ) When a s s o c i a t e d ECCS subsystem(s1 a r e r e q u i r e d t o be OPERABLE p e r LCO 3.5.2, ECCS-Shutdown.

( b ) Also r e q u i r e d t o i n i t i a t e t h e associated d i e s e l generator (DG).

PBAPS U N I T 2 3.3-39 A m e n d m e n t No.

ECCS Instrumentation 3.3.5.1 Table 3 . 3 . 5 . 1 - 1 (page 2 o f 5 )

Emergency Core C o o l i n g System I n s t r u m e n t a t i o n APPLICABLE CONDITIONS MODES REQUIRED REFERENCED OR OTHER CHANNELS FROM SPECIFIED PER REQUIRED SURVEILLANCE ALLOWABLE FUNCTION CONDITIONS FUN~TION ACTION A . l REQUIREMENTS VALUE

2. Low Pressure C o o l a n t I n j e c t i o n (LPCI) System

a. Reactor Vessel Water 4 SR 3.3.5.1.1 2 -160 i n c h e s Level -Low Low Low SR 3.3.5.1.2

( L e v e l 1) SR 3.3.5.1.4 SR 3.3.5.1.5

b. Drywell 4 SR 3.3.5.1.1 1 2 . 0 psig Pressure -High SR 3.3.5.1.2 SR 3.3.5.1.4 SR 3.3.5.1.5

c. Reactor P r e s s u r e -Low 4 SR 3.3.5.1.1 2 425.0 p s i g

( I n j e c t i o n Permi s s i ve 1 SR 3.3.5.1.2 and SR 3.3.5.1.4 1475.0 psig SR 3.3.5.1.5 4 SR 3.3.5.1.1 2 425.0 p s i g SR 3.3.5.1.2 and SR 3.3.5.1.4 I475.D psig SR 3.3.5.1.5

d. Reactor P r e s s u r e -Low 4 C SR 3.3.5.1.1 z 211.0 p s i g Low (Reci r c u l a t i o n SR 3.3.5.1.2 D i scharge Valve SR 3.3.5.1.4 Permissive) SR 3.3.5.1.5

e. Reactor Vessel Shroud 2 B SR 3.3.5.1.1 2 -226.0 Level -Level 0 SR 3.3.5.1.2 inches SR 3.3.5.1.4 SR 3.3.5.1.5

f. Low Pressure C o o l a n t 8 C SR 3.3.5.1.4 I n j e c t i o n Pump (2 per SR 3.3.5.1.5 S t a r t -Time Delay pump)

Relay ( o f f s i t e power a v a i 1a b l e l Pumps A,B 2 1.9 seconds and I 2.1 seconds Pumps C,D 2 7.5 seconds and I 8.5 seconds

g. Low Pressure C o o l a n t 4 E SR 3.3.5.1.2 1299.0 psid I n j e c t i o n Pump (1 p e r SR 3.3.5.1.4 and D i scha r g e F1 ow -Low pump) SR 3.3.5.1.5 S 331.0 p s i d

( By pa s s 1

_-__ - ~ ~ ~ ___ _ _ _

( c o n t inued )

(a) When a s s o c i a t e d ECCS subsystem(s1 a r e r e q u i r e d t o be OPERABLE p e r LCO 3.5.2, ECCS-Shutdown. I (c) With a s s o c i a t e d r e c i r c u l a t i o n pump d i s c h a r g e v a l v e open.

PBAPS U N I T 2 3.3-40 A m e n d m e n t No.

P r ima r y Cont a inment Is o l a t ion In s t rument a t ion 3.3.6.1 3.3 INSTRUMENTATION 3.3.6.1 P r i ma r y Conta inment Isol a t ion I n s t rumenta t ion LCO 3.3.6.1 The p r i m a r y c o n t a i n m e n t i s o l a t i o n i n s t r u m e n t a t i o n f o r each F u n c t i o n i n T a b l e 3 . 3 . 6 . 1 - 1 s h a l l be OPERABLE.

APPLICABILITY: According t o Table 3.3.6.1-1.

ACTIONS

2. S e p a r a t e C o n d i t i o n e n t r y i s a l l o w e d f o r each c h a n n e l .

I CONDITION I REQUIRED ACTION I COMPLETION TIME A. One o r more r e q u i r e d A.l Place channel i n 12 h o u r s f o r channels inoperable. trip. Functions l . d ,

2.a, 2.b, 8 . a ,

and 8.b I 24 h o u r s f o r Functions other than Functions l . d , L a , 2.b, 8.a, and 8.b I

B. One o r more F u n c t i o n s B.l R e s t o r e is o l a t i o n 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months with isolation capability.

c a p a b i 1 it y n o t maintained.

C. R e q u i r e d A c t i o n and c.1 Enter the Condition Immediately associated Completion referenced i n Time o f C o n d i t i o n A o r Table 3.3.6.1-1 f o r B n o t met. t h e channel.

( c o n t inued 1 PBAPS U N I T 2 3.3-48 Amendment No.

P r i mary C o n t a i nment Isol a t ion I n s t rumenta t i on 3.3.6.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION T I M E D. As r e q u i r e d by D.l I s o l a t e associated 1 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months Required A c t i o n C . 1 main steam l i n e and r e f e r e n c e d i n (MSL).

Table 3.3.6.1-1.

0.2.1 Be i n MODE 3. 1 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months D.2.2 Be i n MODE 4. 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months E. As r e q u i r e d by E.l Be i n MODE 2. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months Required A c t i o n C . l and r e f e r e n c e d i n Table 3.3.6.1-1.

F. As r e q u i r e d by F. 1 Isolate the affected 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months Required A c t i o n C . l penetration flow and r e f e r e n c e d i n pathW.

Table 3.3.6.1-1.

G. As r e q u i r e d by G.l Be i n MODE 3. 1 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months Required A c t i o n C . 1 and r e f e r e n c e d i n AMD Table 3.3.6.1-1.

G.2 Be i n MODE 4. 36 h o u r s R e q u i r e d A c t i o n and associated Completion Time o f C o n d i t i o n F o r J n o t met.

( c o n t inued 1 PBAPS U N I T 2 3.3-49 Amendment No.

Primary C o n t a i n m e n t I s 0 1 a t i o n I n s t r u m e n t a t i o n 3.3.6.1 ACTIONS (continued)

CO~DITION R E Q U I R E D ACTION COMPLETION TIME H. As r e q u i r e d b y H.l Declare associated 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months Requi r e d A c t i o n C . 1 standby l i q u i d and r e f e r e n c e d i n c o n t r o l (SLC)

Table 3.3.6.1-1. subsystem i n o p e r a b l e .

H.2 I s 0 1a t e t h e R e a c t o r 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months Water Cleanup System.

I. As r e q u i r e d b y 1.1 I n i t i a t e action t o Immediately Required A c t i o n C . 1 r e s t o r e channel t o and r e f e r e n c e d i n OPERABLE s t a t u s .

Table 3.3.6.1-1.

OR 1.2 I n i t i a t e action t o Immediately i s o l a t e t h e Residual Heat Removal ( R H R )

Shutdown C o o l i n g Sys tern.

3. As r e q u i r e d b y J.1 Is01a t e t h e a f f e c t e d 24 h o u r s Required A c t i o n C . 1 penetration flow and r e f e r e n c e d i n path(s1.

Table 3.3.6.1-1.

PBAPS UNIT 2 3.3-50 Amendment No.

Pr ima r y Contai nment I sol a t ion I n s t rumentat ion 3.3.6.1 T a b l e 3.3.6.1-1 (page 3 o f 3 )

P r i m a r y Cont a inment I sol a t ion I n s t rumenta t ion APPLICABLE CONDITIONS MODES OR REQUIRED REFERENCED OTHER CHANNELS FROM SPECIFIED PER TRIP REQUIRED SURVEILLANCE ALLOWABLE FUNCTION CONDITIONS SYSTEM ACTION C . 1 REQUIREMENTS VALUE

5. Reactor Water Cleanup RWCU) System I s o l a t i o n

a. RWCU Flow-High 1 F SR 3.3.6.1.1 5 125% r a t e d SR 3.3.6.1.3 f l o w (23.0 SR 3.3.6.1.7 in-wc)

b. SLC System I n i t i a t i o n 1.2 1 H SR 3.3.6.1.7 NA

c. Reactor Vessel Water 112~3 2 F SR 3.3.6.1.1 2 1.0 inches Level-Low ( L e v e l 3 ) SR 3.3.6.1.2 SR 3.3.6.1.5 SR 3.3.6.1.7

6. RHR Shutdown C o o l i n g System I s o la t i o n

a. Reactor P r e s s u r e - H i g h 11293 F SR 3.3.6.1.3 s 70.0 p s i g SR 3.3.6.1.7

b. Reactor Vessel Water 394,s I SR 3.3.6.1.1 2 1.0 i n c h e s Level -Low ( L e v e l 3 ) SR 3.3.6.1.2 SR 3.3.6.1.5 SR 3.3.6.1.7

7. Feedwater R e c i r c u l a t i o n I s 0 1a t i on

a. Reactor P r e s s u r e - H i g h 1,283 2 F SR 3.3.6.1.1 s 600 p s i g SR 3.3.6.1.2 SR 3.3.6.1.5 SR 3.3.6.1.7

8. T r a v e r s i n g I n c o r e Probe Isol a t i on

a. Reactor Vessel Water 11213 2 J SR 3.3.6.1.1 2 1.0 i n c h e s Level-Low ( L e v e l 3 ) SR 3.3.6.1.2 SR 3.3.6.1.5 SR 3.3.6.1.7

b. Drywell Pressure-High 112~3 2 J SR 3.3.6.1.1 5 2.0 p s i g SR 3.3.6.1.2 SR 3.3.6.1.5 SR 3.3.6.1.7

( a ) I n MODES 4 and 5 , p r o v i d e d RHR Shutdown C o o l i n g System i n t e g r i t y i s m a i n t a i n e d , o n l y one channel p e r t r i p system w i t h an i s o l a t i o n s i g n a l a v a i l a b l e t o one shutdown c o o l i n g pump s u c t i o n i s o l a t i o n v a l v e i s r e q u i red.

PBAPS U N I T 2 3.3-54 Amendment No.

ECCS- Operati ng 3.5.1 3.5 EMERGENCY CORE COOLING SYSTEMS ( E C C S ) AND REACTOR CORE ISOLATION COOLING

( R C I C ) SYSTEM 3.5.1 ECCS - 0 p e r a t i n g LCO 3.5.1 Each ECCS i n j e c t i o n f s p r a y s u b s y s t e m and t h e A u t o m a t i c D e p r e s s u r i z a t i o n System ( A D S ) f u n c t i o n o f f i v e s a f e t y h e l i e f v a l v e s s h a l l b e OPERABLE.

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

Low p r e s s u r e c o o l a n t i n j e c t i o n ( L P C I ) s u b s y s t e m s may b e c o n s i d e r e d OPERABLE d u r i n g a l i g n m e n t and o p e r a t i o n f o r d e c a y h e a t r e m o v a l w i t h r e a c t o r steam dome p r e s s u r e l e s s t h a n t h e R e s i d u a l H e a t Removal ( R H R ) shutdown c o o l i n g i s o l a t i o n p r e s s u r e i n MODE 3, i f c a p a b l e o f b e i n g m a n u a l l y r e a l i g n e d and n o t o t h e r w i s e i n o p e r a b l e .

APPLICABILITY: MODE 1, MODES 2 and 3 , e x c e p t h i g h p r e s s u r e c o o l a n t i n j e c t i o n ( H P C I )

i s n o t r e q u i r e d t o b e OPERABLE w i t h r e a c t o r steam dome p r e s s u r e s 1 5 0 p s i g and ADS v a l v e s a r e n o t r e q u i r e d t o b e OPERABLE w i t h r e a c t o r s t e a m dome p r e s s u r e s 100 p s i g .

ACT I ON S

- __ ~ _ _

I

~~

CONDITION REQUIRED ACTION COMPLETION TIME A. One l o w p r e s s u r e ECCS A.1 Restore low pressure 7 days injection/spray ECCS in j e c t i o n / s p r a y subsystem i n o p e r a b l e . subsystem(s) t o OPERABLE s t a t u s .

One l o w p r e s s u r e c o o l a n t i nj e c t i on

( L P C I ) pump i n each s u b s y s t e m in o p e r a b l e.

B, R e q u i r e d A c t i o n and B.l Be i n MODE 3. 12 h o u r s a s s o c i a t e d Compl e t i on Time o f C o n d i t i o n A -

AND n o t met.

B.2 Be i n MODE 4. 36 h o u r s (continued)

PBAPS UNIT 2 3.5-1 Amendment No.

ECCS-Operating 3.5.1 SURVEILLA~CE R E Q U I R E ~ E ~ ~ S SURVEILLANCE FREQUENCY SR 3.5.1.1 V e r i f y , f o r e a c h ECCS i n j e c t i o n l s p r a y 3 1 days subsystem, t h e p i p i n g i s f i l l e d w i t h w a t e r f r o m t h e pump d i s c h a r g e v a l v e t o t h e i n j e c t i o n valve.

SR 3.5.1.2 V e r i f y e a c h ECCS i n j e c t i o n / s p r a y s u b s y s t e m 3 1 days I manual, power o p e r a t e d , and a u t o m a t i c v a l v e i n the flow path, t h a t i s not locked, sealed, o r otherwise secured i n p o s i t i o n ,

i s i n the correct position.

SR 3.5.1.3 V e r i f y ADS n i t r o g e n s u p p l y h e a d e r p r e s s u r e 3 1 days i s L 85 p s i g .

SR 3.5.1.4 V e r i f y t h e LPCI c r o s s t i e v a l v e 3 1 days i s c l o s e d and power i s removed f r o m t h e Val ve o p e r a t o r .

( c o n t inued 1 PBAPS UNIT 2 3.5-4 Amendment No.

E C C S - Shutdown 3.5.2 3.5 EMERGENCY CORE COOLING SYSTEMS ( E C C S ) AND REACTOR CORE ISOLATION COOLING ( R C I C ) SYSTEM 3.5.2 ECCS-Shutdown LCO 3.5.2 Two l o w p r e s s u r e ECCS i n j e c t i o n / s p r a y subsystems s h a l l be OPERABLE.

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

One LPCI subsystem may be c o n s i d e r e d OPERABLE d u r i n g a l i g n m e n t and o p e r a t i o n f o r decay h e a t removal i f capable o f b e i n g m a n u a l l y r e a l i g n e d and n o t o t h e r w i s e i n o p e r a b l e .

APPLICABILITY: MODE 4, MODE 5, e x c e p t w i t h t h e s p e n t f u e l s t o r a g e p o o l g a t e s removed, w a t e r l e v e l 2 458 i n c h e s above r e a c t o r p r e s s u r e v e s s e l i n s t r u m e n t z e r o , and no o p e r a t i o n s w i t h a p o t e n t i a l f o r d r a i n i n g t h e r e a c t o r v e s s e l (OPDRVs) i n progress.

CONDITION A. One r e q u i r e d ECCS A.l R e s t o r e r e q u i r e d ECCS 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months in j e c t i o n / s p r a y injection/spray subsystem i n o p e r a b l e . subsystem t o OPERABLE status.

B. R e q u i r e d A c t i o n and 6.1 I n i t i a t e action t o associated Completion suspend OPDRVs.

Time o f C o n d i t i o n A n o t met.

C. Two r e q u i r e d ECCS c.1 I n i t i a t e action t o injection/spray suspend OPDRVs.

subsystems i n o p e r a b l e .

AND c.2 R e s t o r e one ECCS 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months injection/spray subsystem t o OPERABLE status.

( c o n t inued 1 PBAPS U N I T 2 3.5-8 Amendment No.

E C C S - Shutdown 3.5.2 SURVEILLANCE FREQUENCY SR 3.5.2.2 V e r i f y , f o r each r e q u i r e d c o r e spray ( C S ) 12 h o u r s subsystem, t h e :

Condensate s t o r a g e t a n k w a t e r l e v e l i s 2 17.3 f t .

SR 3.5.2.3 V e r i f y , f o r e a c h r e q u i r e d ECCS i n j e c t i o n / 3 1 days s p r a y subsystem, t h e p i p i n g i s f i l l e d w i t h w a t e r f r o m t h e pump d i s c h a r g e v a l v e t o t h e i n j e c t i o n valve.

SR 3.5.2.4 V e r i f y e a c h r e q u i r e d ECCS i n j e c t i o n / s p r a y 3 1 days s u b s y s t e m m a n u a l , power o p e r a t e d , and automatic valve i n t h e f l o w path, t h a t i s n o t locked, sealed, o r otherwise secured i n position, i s i n the correct position.

(continued)

PBAPS UNIT 2 3.5-10 Amendment No.

P r i m a r y C o n t a i n m e n t A i r Lock 3.6.1.2 SUR~EILLANCE FREQUENCY SR 3.6.1.2.2 V e r i f y o n l y one d o o r i n t h e p r i m a r y 24 months c o n t a i n m e n t a i r l o c k can be opened a t a time.

PBAPS U N I T 2 3.6-7 Amendment No.

PCIVS 3.6.1.3 ACTIONS CONDITION REQUIRED ACTION I COMPLETIO~ T I M E A. (continued) A.2 - - - - - - - - NOTES--------

1. I s o l a t i o n d e v i c e s i n high radiation a r e a s may be v e r i f i e d by use o f admi n i s t r a t i ve means.

2. I s o l a t i o n d e v i c e s t h a t are locked, sealed, o r o t h e r -

w i s e s e c u r e d may be v e r i f i e d by use o f admi n i s t rat ive means.

Verify the affected Once p e r 3 1 days penetration flow path for isolation i s isolated. devices outside primary containment AND Prior t o e n t e r i n g MODE 2 o r 3 from MODE 4, i f p r i ma r y c o n t a i n m e n t was de-inerted while i n MODE 4, i f not performed within the previous 92 days, f o r isol a t i on devices i n s i d e primary containment (continued)

PBAPS U N I T 2 3.6-9 Amendment No.

PCIVs 3.6.1.3 ACTIONS (continued)

CONDITION R EQ U IR ED A C T I O N C O M PL E T IO N T I M E B. ---------NOTE--------- B.l I s o l a t e the affected 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months Only appl i cabl e t o penetration flow p a t h penetration flow paths by use of a t l e a s t with two P C I V s , one closed a n d de - a c t i v a ted automatic valve, One or more closed manual v a l ve, penetration flow p a t h s or blind flange.

w i t h two P C I V s inoperable except f o r M S I V leakage n o t within l i m i t .

C. ---------NOTE--------- c.1 I s o l a t e the affected 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months except Only appl i cabl e t o penetration flow p a t h f o r excess flow penetration flow paths by use of a t l e a s t check valves wi,th only one P C I V . one closed a n d (EFCVs) and de-activated penetrations automatic valve, with a closed One or more closed manual v a l ve, system penetration flow paths o r blind flange.

with one P C I V -AND inoperable.

72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months f o r EFCVs and penetrations with a closed system (continued)

PBAPS U N I T 2 3.6-10 Amendment N o .

PCIVS 3.6.1.3 ACTIONS (continued)

CONDITION R E Q U I R E D ACTION ~OMPLETION TIME

~ __

c.2 --------NOTES--------

C. (continued)

1. I s o l a t i o n d e v i c e s i n high radiation a r e a s may b e v e r i f i e d by use o f admi n i s t r a t i v e means.

2. I s o l a t i o n d e v i c e s t h a t a r e locked, sealed, o r otherwise secured may be v e r i f i e d by use o f admi n i s t r a t i v e means.

Verify the affected Once p e r 3 1 d a y s penetration flow path for isolation i s isolated. devices outside primary containment Prior to e n t e r i n g MODE 2 o r 3 from MODE 4, i f primary c o n t a i n m e n t was de-inerted while i n MODE 4, i f n o t performed dithin the previous 32 d a y s , f o r isolation j e v i c e s in s i de i r ima r y Zontainment I )

D. One o r more D.l Restore leakage r a t e 3 hours3.472222e-5 days 8.333333e-4 hours 4.960317e-6 weeks 1.1415e-6 months penetration flow paths t o within l i m i t .

w i t h one o r more MSIVs not within MSIV leakage r a t e l i m i t s .

(continued)

PBAPS UNIT 2 3.6-11 Amendment No.

PCIVS 3.6.1.3 SURVEILLAN~E R E Q U I R E ~ E N T S ( c o n t i n u e d )

SURVEILLANCE FREQUENCY SR 3.6.1.3.3 ------------------NOTE-------------------

N o t r e q u i r e d t o b e met when t h e 6 i n c h o r 1 8 i n c h p r i m a r y c o n t a i n m e n t p u r g e and 1 8 in c h p r i m a r y c o n t a i nment e x h a u s t v a l v e s a r e open f o r i n e r t i n g , d e - i n e r t i n g ,

p r e s s u r e c o n t r o l , ALARA o r a i r qua1 i t y c o n s i d e r a t i o n s f o r personnel e n t r y , o r Surveillances t h a t require the valves t o b e open.

......................................... i V e r i f y e a c h 6 i n c h and 18 i n c h p r i m a r y 3 1 days C o n t a i n m e n t p u r g e v a l v e and e a c h 18 i n c h primary containment exhaust v a l v e i s c l osed.

SR 3.6.1.3.4 _---_-----_---_-N - _O T E S - - - - - - - - - - - - - - - - - -

1. V a l v e s and b l i n d f l a n g e s i n h i g h r a d i a t i o n a r e a s may be v e r i f i e d b y u s e o f a d m i n i s t r a t i v e means.

2. N o t r e q u i r e d t o b e met f o r PCIVs t h a t a r e open u n d e r a d m i n i s t r a t i v e controls.

3. Not r e q u i r e d t o be performed f o r t e s t taps w i t h a diameter I1 inch.

V e r i f y e a c h p r i m a r y c o n t a i n m e n t isol a t i on 3 1 days manual v a l v e and b l i n d f l a n g e t h a t i s l o c a t e d o u t s i d e p r i m a r y c o n t a i n m e n t and n o t locked, sealed, o r otherwise secured and i s r e q u i r e d t o be c l o s e d d u r i n g accident c o n d i t i o n s i s closed.

I

( c o n t inued 1 PBAPS U N I T 2 3.6-13 Amendment No.

PCIVS 3.6.1.3 SURVEILLANCE REQUIREMENTS (continued)

SUR~EI~LA~CE FREQUENCY

2. N o t r e q u i r e d t o b e met f o r PCIVs t h a t a r e open u n d e r a d m i n i s t r a t i v e controls.

V e r i f y e a c h p r i m a r y c o n t a i n m e n t manual Prior t o i s o l a t i o n v a l v e and b l i n d f l a n g e t h a t i s e n t e r i n g MODE 2 l o c a t e d i n s i d e r i m a r y c o n t a i n m e n t and o r 3 from n o t l o c k e d , sea e d , o r o t h e r w i s e s e c u r e d MODE 4 i f and i s r e q u i r e d t o be c l o s e d d u r i n g primary a c c i d e n t c o n d i t ons i s c l o s e d . c o n t a i n m e n t was de-inerted while i n MODE 4, i f n o t performed within the previous 92 days SR 3.6.1.3.6 Verify continuity o f the traversing 3 1 days i n c o r e probe (TIP) shear i s o l a t i o n v a l v e e x p l o s i v e charge.

SR 3.6.1.3.7 V e r i f y e a c h S G I G System manual v a l v e i n 3 1 days t h e f l o w p a t h s s e r v i c i n g t h e 6 and 18 i n c h p r i m a r y c o n t a i n m e n t p u r g e v a l v e s and t h e 18 i n c h p r i m a r y c o n t a i n m e n t exhaust valves, t h a t i s n o t locked, s e a l ed, o r o t h e r w i s e s e c u r e d i n p o s i t i on, i s i n the correct position.

(continued)

PBAPS UNIT 2 3.6-14 Amendment No.

PCIVS 3.6.1.3 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE I FREQUENCY SR 3.6.1.3.8 V e r i f y t h e i s o l a t i o n t i m e o f each a u t o m a t i c power o p e r a t e d P C I V , e x c e p t f o r MSIVs, i s w i t h i n l i m i t s .

I n accordance with the I n s e r v i ce I

T e s t i n g Program SR 3.6.1.3.9 V e r i f y t h e i s o l a t i o n t i m e o f each M S I V i s I n accordance 2 3 seconds and 2 5 seconds, with the Inservice T e s t i n g Program SR 3.6.1.3.10 V e r i f y each a u t o m a t i c P C I V a c t u a t e s t o 24 months t h e i s o l a t i o n p o s i t i o n on an a c t u a l o r simulated i s o l a t i o n signal.

SR 3.6.1.3.11 V e r i f y a r e p r e s e n t a t i v e sample o f r e a c t o r 24 months i n s t r u m e n t a t i o n l i n e EFCVs a c t u a t e s t o t h e i s o l a t i o n p o s i t i o n on a s i m u l a t e d instrument l i n e break s i g n a l .

SR 3.6.1.3.12 Remove and t e s t t h e e x p l o s i v e s q u i b f r o m 24 months on a each shear i s o l a t i o n v a l v e o f t h e T I P STAGGERED TEST System. BAS I S SR 3.6.1.3.13 V e r i f y t h e CAD System s u p p l i e s n i t r o g e n 24 months t o t h e S G I G System upon l o s s o f t h e normal a i r s u p p l y .

(continued)

PBAPS UNIT 2 3.6-15 Amendment No.

Secondary C o n t a i n m e n t 3.6.4.1 ACTIONS -

CONDITION REQUIRED ACTION COMPLETION TIME C. (continued) c.2 Suspend CORE Imrnedia t e l y ALTERATIONS.

C.3 I n i t i a t e action t o Immed ia t e l y suspend OPDRVs.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.6.4.1.1 V e r i f y a l l secondary containment 3 1 days equipment h a t c h e s a r e c l o s e d and s e a l e d .

SR 3.6.4.1.2 V e r i f y one s e c o n d a r y c o n t a i n m e n t a c c e s s 3 1 days d o o r i n each access o p e n i n g i s c l o s e d .

SR 3.6.4.1.3 V e r i f y s e c o n d a r y c o n t a i n m e n t can be drawn 24 months on a down t o 2 0.25 i n c h o f vacuum w a t e r gauge STAGGERED TEST i n I 120 seconds u s i n g one s t a n d b y gas B A S I S f o r each t r e a t m e n t (SGT) subsystem. subsystem SR 3.6.4.1.4 V e r i f y t h e secondary c o n t a i n m e n t can be 24 months on a m a i n t a i n e d 2 0.25 i n c h o f vacuum w a t e r STAGGERED TEST gauge f o r 1 h o u r u s i n g one SGT subsystem B A S I S f o r each a t a f l o w r a t e I 10,500 cfm. subsystem PBAPS UNIT 2 3.6-35 Amendment No.

SCIVS 3.6.4.2 ACTIONS CONDITION R E Q U I R E D ACTION COMPLETION TIME A. (continued) A.2 - - - - - _ - -N O T E S - - - - - - - -

1. I s o l a t i o n d e v i c e s i n high radiation a r e a s may b e v e r i f i e d by use o f admini s t r a t i v e means.

2. I s o l a t i o n devices t h a t a r e locked, sealed, or o t h e r -

w i s e s e c u r e d may be v e r i f i e d by u s e o f a d m i n i s t r a t i ve means.

Verify the affected Once p e r 3 1 d a y s penetration flow path i s isolated.

B. ---------NOTE-------- B.l Isolate the affected 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months Only a p p l i c a b l e t o penetration flow path p e n e t r a t i o n f l o w paths by use o f a t l e a s t w i t h two i s o l a t i o n one c l o s e d and valves. de-activated automatic valve, c l o s e d manual Val v e ,

One o r more or b l i n d f l a n g e .

p e n e t r a t i o n f l o w paths w i t h t w o SCIVs inoperable.

C. R e q u i r e d A c t i o n and c.1 Be i n MODE 3 . 12 h o u r s a s s o c i a t e d Compl e t i on Time o f C o n d i t i o n A AND o r B n o t met i n MODE 1, 2 , o r 3. c.2 Be i n MODE 4. 36 h o u r s

~~

(continued 1 PBAPS UNIT 2 3.6-37 Amendment No.

SCIVS 3.6.4.2 SURVEILLANCE REQUIRE~ENTS SURVEILLANCE FREQUENCY

2. N o t r e q u i r e d t o b e met f o r SCIVs t h a t a r e open u n d e r a d m i n i s t r a t i v e c o n t r o l s.

V e r i f y each secondary containment 3 1 days i s o l a t i o n manual v a l v e and b l i n d f l a n g e t h a t i s n o t locked, sealed, o r otherwise s e c u r e d and i s r e q u i r e d t o b e c l o s e d d u r i n g accident c o n d i t i o n s i s closed.

SR 3.6.4.2.2 V e r i f y t h e i s o l a t i o n t i m e o f each power I n accordance operated automatic SCIV i s w i t h i n l i m i t s . with the I Inservice T e s t i n g Program SR 3.6.4.2.3 V e r i f y each a u t o m a t i c S C I V a c t u a t e s t o 24 months t h e i s o l a t i o n p o s i t i o n on an a c t u a l o r simulated actuation signal.

PBAPS UNIT 2 3.6-39 Amendment No.

AC S o u r c e s - 0 p e r a t i n g 3.8.1 SURVEILLANCE FREQUENCY SR 3.8.1.9 ------------------NOTES--------------------

1. I f p e r f o r m e d w i t h t h e DG s y n c h r o n i z e d w i t h o f f s i t e power, i t s h a l l be p e r f o r m e d a t a power f a c t o r I0.89.

However, i f g r i d c o n d i t i o n s do n o t p e r m i t , t h e power f a c t o r l i m i t i s n o t r e q u i r e d t o b e m e t . Under t h i s c o n d i t i o n , t h e ower f a c t o r s h a l l be P

m a i n t a i n e d a s c o s e t o t h e l i m i t as practicable.

2. A single test a t the specified Frequency w i l l s a t i s f y t h i s Surveillance f o r both units.

V e r i f y each DG r e j e c t s a l o a d g r e a t e r t h a n 24 months o r equal t o i t s associated s i n g l e l a r g e s t p o s t - a c c i d e n t l o a d , and:

a. Following load rejection, the f r e q u e n c y i s 1 6 6 . 7 5 Hz;

b. W i t h i n 1.8 seconds f o l l o w i n g l o a d r e j e c t i o n , t h e v o l t a g e i s 2 3750 V and I 4570 V , and a f t e r s t e a d y s t a t e c o n d i t i o n s a r e reached, maintains v o l t a g e 2 4160 V and 5 4400 V ; and

c. W i t h i n 2.4 seconds f o l l o w i n g l o a d r e j e c t i o n , t h e f r e q u e n c y i s 2 58.8 Hz and I61.2 Hz.

SR 3.8.1.10 - - - - -. - - - - - - - - - - - - - N O T E S - - - - - - - - - - - - - - - - - - - -

1.

r:

I f e r f o r m e d w i t h t h e DG s y n c h r o n i z e d w i t o f f s i t e power, i t s h a l l be p e r f o r m e d a t a power f a c t o r 5 0 . 8 9 .

However, i f g r i d c o n d i t i o n s d o n o t p e r m i t , t h e power f a c t o r l i m i t i s n o t r e q u i r e d t o b e m e t . Under t h i s c o n d i t i o n , t h e power f a c t o r s h a l l be m a i n t a i n e d a s c l o s e t o t h e l i m i t as practicable.

2. A s i n g l e t e s t a t t h e s p e c i f i e d Frequency w i 11 s a t i s f y t h i s S u r v e i 11 ance f o r both units.

V e r i f y each DG does n o t t r i p and v o l t a g e i s 24 months m a i n t a i n e d I 5230 V d u r i n g and f o l l o w i n g a l o a d r e j e c t i o n o f 2 2400 kW and I 2 8 0 0 kW.

(continued 1 PBAPS UNIT 2 3.8-10 Amendment No.

AC S o u r c e s - O p e r a t i n g SURVEILLANCE REQUIREMENTS (continued)

S~RVEILLA~CE FREQUENCY

1. Momentary t r a n s i e n t s o u t s i d e t h e l o a d and power f a c t o r r a n g e s do n o t invalidate this test.

2. I f p e r f o r m e d w i t h DG s y n c h r o n i z e d w i t h o f f s i t e power, i t s h a l l be performed a t a power f a c t o r s 0.89. However, i f g r i d c o n d i t i o n s do n o t p e r m i t , t h e power f a c t o r l i m i t i s n o t r e q u i r e d t o b e m e t . Under t h i s c o n d i t i o n , t h e power f a c t o r s h a l l b e m a i n t a i n e d as c l o s e t o t h e l i m i t as p r a c t i c a b l e .

3. A single test a t the specified F r e q u e n c y w i 11 s a t i s f y t h i s S u r v e i 11 ance f o r b o t h u n i t s .

V e r i f y each DG o p e r a t e s f o r 2 24 h o u r s : 24 months

a. For 2 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months l o a d e d 2 2800 kW and s 3000 kW; and

b. For t h e r e m a i n i n g h o u r s o f t h e t e s t l o a d e d 2 2400 kW and I2800 kW.

(continued)

PBAPS UNIT 2 3.8-14 Amendment No.

Responsi b i 1 it y 5.1 5.0 ADMINISTRATIVE CONTROLS 5.1 Responsibility 5.1.1 The p l a n t manager s h a l l b e r e s p o n s i b l e f o r o v e r a l l u n i t o p e r a t i o n I and s h a l l d e l e g a t e i n w r i t i n g t h e s u c c e s s i o n t o t h i s r e s p o n s i b i 1 it y d u r i n g h i s absence.

The p l a n t manager o r h i s d e s i g n e e s h a l l a p p r o v e , p r i o r t o I i m p l e m e n t a t i o n , each proposed t e s t , e x p e r i m e n t , o r m o d i f i c a t i o n t o systems o r equipment t h a t a f f e c t n u c l e a r s a f e t y .

5.1.2 The S h i f t S u p e r v i s o r s h a l l b e r e s p o n s i b l e f o r t h e c o n t r o l room command f u n c t i o n . D u r i n g any absence o f t h e S h i f t S u p e r v i s o r f r o m t h e c o n t r o l room w h i l e t h e u n i t i s i n MODE 1, 2, o r 3 , an i n d i v i d u a l w i t h an a c t i v e S e n i o r R e a c t o r O p e r a t o r ( S R O ) l i c e n s e s h a l l b e d e s i g n a t e d t o assume t h e c o n t r o l room command f u n c t i o n .

D u r i n g any a b s e n c e o f t h e S h i f t S u p e r v i s o r f r o m t h e c o n t r o l room w h i l e t h e u n i t i s i n MODE 4 o r 5, an i n d i v i d u a l w i t h an a c t i v e SRO l i c e n s e o r R e a c t o r O p e r a t o r l i c e n s e s h a l l b e d e s i g n a t e d t o assume t h e c o n t r o l room command f u n c t i o n .

PBAPS UNIT 2 5.0-1 Amendment No.

Organization 5.2 5.0 ADMINISTRATIVE CONTROLS 5.2 Organization 5.2.1 Q n s i t e a nd O f f s i t e 0 r s a n i z a t i o n s O n s i t e and o f f s i t e o r g a n i z a t i o n s s h a l l be e s t a b l i s h e d f o r u n i t o p e r a t i o n and c o r p o r a t e management, r e s p e c t i v e l y . The o n s i t e and o f f s i t e organizations shall include the positions f o r a c t i v i t i e s a f f e c t i n g s a f e t y o f t h e n u c l e a r power p l a n t .

a. L i n e s o f a u t h o r i t y , r e s p o n s i b i l i t y , and c o m m u n i c a t i o n s h a l l b e d e f i n e d and e s t a b l i s h e d t h r o u g h o u t h i g h e s t management l e v e l s , i n t e r m e d i a t e l e v e l s , and a l l o p e r a t i n g o r g a n i z a t i o n p o s i t i o n s . These r e l a t i o n s h i p s s h a l l b e documented and u p d a t e d , as a p p r o p r i a t e , i n o r g a n i z a t i o n c h a r t s , f u n c t i o n a l d e s c r i p t i o n s o f d e p a r t m e n t a l r e s p o n s i b i l i t i e s and r e l a t i o n s h i p s , and j o b d e s c r i p t i o n s f o r k e y p e r s o n n e l p o s i t i o n s , o r i n e q u i v a l e n t f o r m s o f d o c u m e n t a t i o n . These requirements, i n c l u d i n g t h e p l a n t - s p e c i f i c t i t l e s o f those personnel f u l f i l l i n g t h e r e s p o n s i b i l i t i e s o f t h e p o s i t i o n s d e l i n e a t e d i n these Technical S p e c i f i c a t i o n s , s h a l l be documented i n t h e UFSAR;

b. The p l a n t manager s h a l l b e r e s p o n s i b l e f o r o v e r a l l s a f e o p e r a t i o n o f t h e p l a n t and s h a l l have c o n t r o l o v e r t h o s e o n s i t e a c t i v i t i e s n e c e s s a r y f o r s a f e o p e r a t i o n and maintenance o f t h e p l a n t ;

C. The s p e c i f i e d c o r p o r a t e o f f i c e r s h a l l h a v e c o r p o r a t e r e s p o n s i b i 1 it y f o r o v e r a l l p l a n t n u c l e a r s a f e t y and s h a l l t a k e any measures needed t o e n s u r e a c c e p t a b l e p e r f o r m a n c e o f t h e s t a f f i n o p e r a t i n g , m a i n t a i n i n g , and p r o v i d i n g t e c h n i c a l s u p p o r t t o t h e p l a n t t o e n s u r e n u c l e a r s a f e t y ; and

d. The i n d i v i d u a l s who t r a i n t h e o p e r a t i n g s t a f f , c a r r y o u t h e a l t h p h y s i c s , o r p e r f o r m q u a l i t y a s s u r a n c e f u n c t i o n s may r e p o r t t o t h e a p p r o p r i a t e o n s i t e manager; however, t h e s e i n d i v i d u a l s s h a l l have s u f f i c i e n t o r g a n i z a t i o n a l f r e e d o m t o ensure t h e i r independence f r o m o p e r a t i n g p r e s s u r e s .

5.2.2 U n i t S t af f The u n i t s t a f f o r g a n i z a t i o n s h a l l a l s o i n c l u d e t h e f o l l o w i n g :

PBAPS UNIT 2 5.0-2 Amendment No.

Organi z a t i on 5.2 5.2 Organization 5.2.2 Unit S t a f f (continued)

The controls s h a l l include guidelines on working hours t h a t ensure adequate s h i f t coverage shall be maintained w i t h o u t routine heavy use o f overtime.

Any deviation from the above guidelines s h a l l be authorized i n advance by the p l a n t manager or the p l a n t manager's designee, i n accordance w i t h approved administrative procedures, a n d w i t h documentation o f the basis for granting I

the deviation. Routine deviation from the working hour guidelines shall n o t be authorized.

Controls shall be included i n the procedures t o require a periodic independent review be conducted t o ensure t h a t excessive hours have n o t been assigned.

e. The senior operations manager or a n operations manager shall I h o l d a n SRO l i c e n s e .

f. An i n d i v i d u a l shall provide advisory technical support t o the u n i t operations s h i f t crew i n t h e areas o f thermal hydraulics, reactor engineering, a n d p l a n t analysis w i t h regard t o the s a f e operation o f the u n i t . This i n d i v i d u a l shall meet the q u a l i f i c a t i o n s s p e c i f i e d by the Commission Policy Statement on Engineering Expertise on S h i f t .

PBAPS UNIT 2 5.0-4 Amendment No.

Programs and Manuals 5.5 5.0 A D M I N I S T R A T I V E CONTROLS 5.5 Programs and Manuals The f o l l o w i n g programs s h a l l be e s t a b l i s h e d , implemented, and m a i n t a i n e d .

5.5.1 O f f s i t e Dose Ca l c u l a t i o n Manual ( O D C M )

a. The ODCM s h a l l c o n t a i n t h e m e t h o d o l o g y and p a r a m e t e r s used i n t h e c a l c u l a t i o n o f o f f s i t e doses r e s u l t i n g f r o m r a d i o a c t i v e gaseous and l i q u i d e f f l u e n t s , i n t h e c a l c u l a t i o n o f gaseous and l i q u i d e f f l u e n t m o n i t o r i n g a l a r m and t r i p s e t p o i n t s , and i n t h e c o n d u c t o f t h e r a d i o l o g i c a l e n v i r o n m e n t a l m o n i t o r i n g program; and

b. The ODCM s h a l l a l s o c o n t a i n t h e r a d i o a c t i v e e f f l u e n t c o n t r o l s and r a d i o 1 o g i c a l e n v i r o n m e n t a l m o n i t o r i n g a c t i v i t i e s , and d e s c r i p t i o n s o f t h e i n f o r m a t i o n t h a t s h o u l d be i n c l u d e d i n t h e Annual R a d i o l o g i c a l E n v i r o n m e n t a l O p e r a t i n g , and R a d i o a c t i v e E f f l u e n t Release r e p o r t s r e q u i r e d b y S p e c i f i c a t i o n 5.6.2 and S p e c i f i c a t i o n 5.6.3.

C. L i c e n s e e i n i t i a t e d changes t o t h e ODCM:

1. S h a l l be documented and r e c o r d s o f r e v i e w s p e r f o r m e d s h a l l be r e t a i n e d , T h i s d o c u m e n t a t i o n s h a l l c o n t a i n :

S u f f i c i e n t i n f o r m a t i o n t o support t h e change(s) t o g e t h e r w i t h t h e a p p r o p r i a t e analyses o r e v a l u a t i o n s j u s t i f y i n g t h e c h a n g e W , and A determination t h a t the changeh) maintain the levels o f r a d i o a c t i v e e f f l u e n t c o n t r o l r e q u i r e d by 10 CFR 20.1302, 40 CFR 190, 10 C F R 50.36a, and 10 CFR 50, Appendix I, and n o t a d v e r s e l y i m p a c t t h e a c c u r a c y o r r e l i a b i l i t y o f e f f l u e n t , dose, o r s e t p o i n t c a l c u l a t ions ;

2. S h a l l become e f f e c t i v e a f t e r r e v i e w and a c c e p t a n c e by t h e P l a n t O p e r a t i o n s Review Committee and t h e a p p r o v a l o f t h e p l a n t manager; and (continued)

PBAPS UNIT 2 5.0-7 Amendment No.

Programs a n d Manual s 5.5 5.5 Programs a n d Manuals 5.5.1 O f f s i t e Dose Calculation Manual (ODCM) (continued)

3. Shall be submitted t o t h e N R C in the form of a complete, l e g i b l e copy of the e n t i r e ODCM as a p a r t o f or concurrent with t h e Radioactive E f f l u e n t Release Report f o r t h e period of the r e p o r t in which any change i n t h e ODCM was made. Each change s h a l l be i d e n t i f i e d by markings in t h e margin of the a f f e c t e d pages, c l e a r l y i n d i c a t i n g t h e area o f t h e page t h a t was changed, a n d s h a l l i n d i c a t e the date ( i . e . , m o n t h a n d y e a r ) the change was implemented.

5.5.2 Primary Cool a n t Sources Outside Containment This program provides c o n t r o l s t o minimize leakage from those portions of systems o u t s i d e containment t h a t could contain highly r a d i o a c t i v e f l u i d s during a s e r i o u s t r a n s i e n t or accident t o l e v e l s as low as p r a c t i c a b l e . The systems include Core Spray, High Pressure Cool a n t I n j e c t i o n , Residual Heat Removal , Reactor Core I s o l a t i o n Cooling, a n d Reactor Water Cleanup. The program s h a l l include the following:

a. Preventive maintenance a n d p e r i o d i c visual inspection requirements; a n d

b. System leak t e s t requirements f o r each system, t o t h e e x t e n t permi t t e d by system design a n d radi ol ogi cal condi t i ons, a t l e a s t once per 24 months. The provisions of SR 3.0.2 a r e appl i cab1 e .

5.5.3 DELETED

( c o n t i nued)

PBAPS UNIT 2 5.0-8 Amendment No.

Programs and Manuals 5.5 5.5 Programs and M a n u a l s (continued) 5.5.6 I n s e r v i c e T e s t i n g Program T h i s p r o g r a m p r o v i d e s c o n t r o l s f o r i n s e r v i c e t e s t i n g o f ASME Code C l a s s 1, 2 , and 3 components. The p r o g r a m s h a l l i n c l u d e t h e following:

1

a. T e s t i n g f r e q u e n c i e s s p e c i f i e d i n S e c t i o n X I o f t h e ASME B o i l e r and P r e s s u r e V e s s e l Code and a p p l i c a b l e Addenda a r e as f o l l o w s :

ASME B o i l e r and P r e s s u r e V e s s e l Code and a p p l icab1 e Addenda terminology f o r Requi r e d F r e q u e n c i e s in s e r v i c e t e s t i n g f o r performing inservice gctivities testina acti v i t i e s Weekly A t l e a s t once p e r 7 days Monthly A t l e a s t once p e r 3 1 d a y s Q u a r t e r l y o r every 3 months A t l e a s t once p e r 92 d a y s Semiannually o r e v e r y 6 months A t l e a s t once p e r 184 d a y s E v e r y 9 months A t l e a s t once p e r 276 d a y s Yearly o r annually A t l e a s t once p e r 366 d a y s Biennially o r every 2 years A t l e a s t once p e r 732 d a y s

b. The p r o v i s i o n s o f SR 3.0.2 a r e a p p l i c a b l e t o t h e F r e q u e n c i e s f o r performing inservice t e s t i n g a c t i v i t i e s ;

c. The p r o v i s i o n s o f SR 3.0.3 are applicable t o inservice t e s t i n g a c t i v i t i e s ; and

d. N o t h i n g i n t h e ASME B o i l e r and P r e s s u r e V e s s e l Code s h a l l b e c o n s t r u e d t o s u p e r s e d e t h e r e q u i r e m e n t s o f any TS.

5.5.7 V e n t i l a t i o n F i l t e r T e s t i n a Proaram ( V FTP 1 The VFTP s h a l l e s t a b l i s h t h e r e q u i r e d t e s t i n g o f E n g i n e e r e d S a f e t y F e a t u r e (ESF) f i l t e r v e n t i l a t i o n s y s t e m s .

T e s t s d e s c r i b e d i n S p e c i f i c a t i o n s 5.5.7.a, 5.5.7.b, and 5 . 5 . 7 . c s h a l l be performed:

( c o n t inued 1 PBAPS U N I T 2 5.0-11 Amendment No.

Programs and Manuals 5.5 5.5 Programs and M a n u a l s 5.5.9 D i e s e l Fue 1 O i l T e s t i n a Prouram (continued)

a. A c c e p t a b i l i t y o f new f u e l o i l f o r u s e p r i o r t o a d d i t i o n t o s t o r a g e tanks by determining t h a t t h e f u e l o i l has:

1. an A P I g r a v i t y o r an a b s o l u t e s p e c i f i c g r a v i t y w i t h i n limits,

2. k i n e m a t i c v i s c o s i t y , when r e q u i r e d , and a f l a s h p o i n t w i t h i n l i m i t s f o r ASTM 2 - 0 f u e l o i l , and

3. a c l e a r and b r i g h t a p p e a r a n c e w i t h p r o p e r c o l o r o r a w a t e r and s e d i m e n t c o n t e n t w i t h i n l i m i t s ;

b. W i t h i n 3 1 d a y s f o l l o w i n g a d d i t i o n o f t h e new f u e l o i l t o s t o r a g e t a n k s , v e r i f y t h a t t h e p r o p e r t i e s o f t h e new f u e l o i l ,

o t h e r t h a n t h o s e a d d r e s s e d i n a . above, a r e w i t h i n l i m i t s f o r ASTM 20 f u e l o i l ; and C. T o t a l p a r t i c u l a t e c o n c e n t r a t i o n o f t h e f u e l o i l i s 5 10 mg/l when t e s t e d e v e r y 3 1 days i n a c c o r d a n c e w i t h ASTM 02276, M e t h o d A, e x c e p t t h a t t h e f i l t e r s s p e c i f i e d i n t h e ASTM m e t h o d may have a n o m i n a l p o r e s i z e o f up t o t h r e e ( 3 )

microns.

The p r o v i s i o n s o f S R 3 . 0 . 2 and SR 3.0.3 a r e a p p l i c a b l e t o t h e D i e s e l F u e l O i l T e s t i n g Program t e s t i n g f r e q u e n c i e s .

5.5.10 T e c h n i c a l Spec i f i c a t i o n s (TS) Bases Cont r o l P r o a r a m T h i s p r o g r a m p r o v i d e s a means f o r p r o c e s s i n g changes t o t h e Bases o f these Technical S p e c i f i c a t i o n s ,

a. Changes t o t h e Bases o f t h e TS s h a l l b e made u n d e r a p p r o p r i a t e a d m i n i s t r a t i v e c o n t r o l s and r e v i e w s .

b. L i c e n s e e s may make changes t o Bases w i t h o u t p r i o r NRC a p p r o v a l p r o v i d e d t h e changes do n o t i n v o l v e e i t h e r o f t h e f o l 1 owing:

A change i n t h e TS i n c o r p o r a t e d i n t h e l i c e n s e ; o r A change t o t h e UFSAR o r Bases t h a t r e q u i r e s NRC a p p r o v a l p u r s u a n t t o 10 CFR 50.59.

c. The Bases C o n t r o l Program s h a l l c o n t a i n p r o v i s i o n s t o e n s u r e t h a t t h e Bases a r e m a i n t a i n e d c o n s i s t e n t w i t h t h e UFSAR.

(continued)

PBAPS UNIT 2 5.0-15 Amendment No.

R e p o r t i n g Requirements 5.6 5.6 R e p o r t i n g Requirements 5.6.2 Annual Rad i o l o a i c a l E n v i ronmental Ope r a t i n a R e p o r t (continued)

The Annual R a d i o l o g i c a l E n v i r o n m e n t a l O p e r a t i n g R e p o r t s h a l l i n c l u d e t h e r e s u l t s o f analyses o f a l l r a d i o l o g i c a l environmental samples and o f a l l e n v i r o n m e n t a l r a d i a t i o n measurements t a k e n d u r i n g t h e period pursuant t o t h e l o c a t i o n s s p e c i f i e d i n t h e t a b l e and f i g u r e s i n t h e ODCM, as w e l l a s summarized and t a b u l a t e d r e s u l t s o f t h e s e a n a l y s e s and measurements i n t h e f o r m a t o f t h e t a b l e i n t h e R a d i o l o g i c a l Assessment Branch T e c h n i c a l P o s i t i o n ,

R e v i s i o n 1, November 1979. I n t h e e v e n t t h a t some i n d i v i d u a l r e s u l t s are not available f o r inclusion w i t h the report, the r e p o r t s h a l l be s u b m i t t e d n o t i n g and e x p l a i n i n g t h e reasons f o r t h e m i s s i n g r e s u l t s . The m i s s i n g d a t a s h a l l be s u b m i t t e d i n a supplementary r e p o r t as soon as p o s s i b l e .

5.6.3 Radi o a c t i ve E f f l u e n t Release Report The R a d i o a c t i v e E f f l u e n t Release Report c o v e r i n g t h e o p e r a t i o n o f t h e u n i t d u r i n g t h e p r e v i o u s y e a r s h a l l be s u b m i t t e d p r i o r t o May 1 o f each y e a r i n accordance w i t h 10 CFR 50.36a. The r e p o r t s h a l l i n c l u d e a summary o f t h e q u a n t i t i e s o f r a d i o a c t i v e l i q u i d and gaseous e f f l u e n t s and s o l i d waste r e l e a s e d f r o m t h e u n i t . The m a t e r i a l p r o v i d e d s h a l l be c o n s i s t e n t w i t h t h e o b j e c t i v e s o u t l i n e d i n t h e ODCM and Process C o n t r o l Program and i n conformance w i t h 10 C F R 50.36a and 10 CFR P a r t 50, Appendix I, S e c t i o n I V . B . l . I 5.6.4 Oeleted (continued1 PBAPS U N I T 2 5.0-20 Amendment No.

R e a c t o r Core SLs B 2.1.1 BASES (continued)

SAFETY LIMITS The r e a c t o r c o r e SLs a r e e s t a b l i s h e d t o p r o t e c t t h e i n t e g r i t y o f the f u e l clad b a r r i e r t o the release o f r a d i o a c t i v e m a t e r i a l s t o t h e e n v i r o n s . SL 2 . 1 . 1 . 1 and SL 2.1.1.2 e n s u r e t h a t t h e c o r e o p e r a t e s w i t h i n t h e f u e l design c r i t e r i a . SL 2 . 1 . 1 . 3 e n s u r e s t h a t t h e r e a c t o r v e s s e l water level i s greater than the top o f the active i r r a d i a t e d f u e l i n o r d e r t o p r e v e n t e l e v a t e d c l a d t e m p e r a t u r e s and resultant clad perforations.

APPLICABILITY SLs 2.1.1.1, 2.1.1.2, and 2.1.1.3 are applicable i n a l l MODES.

SAFETY L I M I T VIOLATIONS E x c e e d i n g an SL may c a u s e f u e l damage and c r e a t e a p o t e n t i a l f o r r a d i o a c t i v e r e l e a s e s i n e x c e s s o f 10 CFR 100, " R e a c t o r S i t e C r i t e r i a , " l i m i t s (Ref. 2). Therefore, i t i s required 1 t o i n s e r t a l l i n s e r t a b l e c o n t r o l r o d s and r e s t o r e c o m p l i a n c e w i t h t h e SLs w i t h i n 2 h o u r s . The 2 h o u r C o m p l e t i o n Time e n s u r e s t h a t t h e o p e r a t o r s t a k e p r o m p t r e m e d i a l a c t i o n and a l s o e n s u r e s t h a t t h e p r o b a b i l i t y o f an a c c i d e n t o c c u r r i n g d u r i n g t h i s p e r i o d i s minimal.

PBAPS UNIT 2 B 2.0-5 R e v i s i o n No.

R e a c t o r Core SLs B 2.1.1 BASES REFERENCES 1. NEDE-24011-P-A, General E l e c t r i c S t a n d a r d A p p l i c a t i o n f o r Reactor Fuel, l a t e s t approved r e v i s i o n ,

2. 10 CFR 100, PBAPS U N I T 2 B 2.0-6 R e v i s i o n No.

RCS P r e s s u r e SL B 2.1.2 BASES APP L ICAB LE The RCS p r e s s u r e SL has been s e l e c t e d such t h a t i t i s a t a SAFETY ANALYSES p r e s s u r e b e l o w w h i c h i t can be shown t h a t t h e i n t e g r i t y o f (continued) t h e system i s n o t endangered. The r e a c t o r p r e s s u r e v e s s e l i s d e s i g n e d t o S e c t i o n 111, 1965 E d i t i o n o f t h e ASME, B o i l e r and P r e s s u r e Vessel Code, i n c l u d i n g Addenda t h r o u g h t h e w i n t e r o f 1965 ( R e f . 51, w h i c h p e r m i t s a maximum p r e s s u r e t r a n s i e n t o f N O % , 1375 p s i g , o f d e s i g n p r e s s u r e 1250 p s i g .

The SL o f 1325 p s i g , as measured i n t h e r e a c t o r steam dome, i s e q u i v a l e n t t o 1375 p s i g a t t h e l o w e s t e l e v a t i o n o f t h e RCS. The RCS i s d e s i g n e d t o t h e ASME S e c t i o n 111, 1980 E d i t i o n , i n c l u d i n g Addenda t h r o u g h w i n t e r o f 1981 ( R e f . 6 ) ,

f o r t h e r e a c t o r r e c i r c u l a t i o n p i p i n g , which p e r m i t s a maximum p r e s s u r e t r a n s i e n t o f 110% o f d e s i g n p r e s s u r e s o f 1250 p s i g f o r s u c t i o n p i p i n g and 1500 p s i g f o r d i s c h a r g e p i p i n g . The RCS p r e s s u r e SL i s s e l e c t e d t o be t h e l o w e s t t r a n s i e n t o v e r p r e s s u r e a l l o w e d by t h e a p p l i c a b l e codes.

SAFETY LIMITS The maximum t r a n s i e n t p r e s s u r e a l l o w a b l e i n t h e RCS p r e s s u r e v e s s e l under t h e ASME Code, S e c t i o n 111, i s 110% o f d e s i g n p r e s s u r e . The maximum t r a n s i e n t p r e s s u r e a l l o w a b l e i n t h e RCS p i p i n g , v a l v e s , and f i t t i n g s i s 110% o f d e s i g n p r e s s u r e s o f 1250 p s i s f o r s u c t i o n p i p i n g and 1500 p s i s f o r d i s c h a r g e p i p i n g . The most l i m i t i n g o f t h e s e a l l o w a n c e s i s t h e 110%

o f d e s i g n p r e s s u r e s o f 1250 p s i g ; t h e r e f o r e , t h e SL on maximum a l l o w a b l e RCS p r e s s u r e i s e s t a b l i s h e d a t 1325 p s i g ,

as measured a t t h e r e a c t o r steam dome.

APPLICABILITY SL 2 . 1 . 2 a p p l i e s i n a l l MODES.

SAFETY LIMIT VIOLATIONS (continued).

PBAPS U N I T 2 B 2.0-8 R e v i s i o n No.

RCS P r e s s u r e SL B 2.1.2 BASES SAFETY L I M I T I VIOLATIONS (continued) E x c e e d i n g t h e RCS p r e s s u r e SL may cause i m m e d i a t e RCS f a i l u r e and c r e a t e a p o t e n t i a l f o r r a d i o a c t i v e r e l e a s e s i n e x c e s s o f 10 CFR 100, " R e a c t o r S i t e C r i t e r i a , " l i m i t s (Ref. 4 ) . Therefore, i t i s r e q u i r e d t o i n s e r t a l l i n s e r t a b l e c o n t r o l r o d s and r e s t o r e c o m p l i a n c e w i t h t h e SL w i t h i n 2 h o u r s . The 2 h o u r C o m p l e t i o n Time e n s u r e s t h a t t h e o p e r a t o r s t a k e p r o m p t r e m e d i a l a c t i o n and a l s o a s s u r e s t h a t t h e p r o b a b i l i t y o f an a c c i d e n t o c c u r r i n g d u r i n g t h e p e r i o d i s minimal.

REFERENCES 1. UFSAR, S e c t i o n 1.5.2.2.

2. ASME, B o i l e r and P r e s s u r e V e s s e l Code, S e c t i o n 111, A r t i c l e NB-7000.

(continued)

PBAPS UNIT 2 B 2.0-9 R e v i s i o n No.

RCS P r e s s u r e SL B 2.1.2 BASES REFERENCES 3. ASME, B o i l e r and P r e s s u r e Vessel Code, S e c t i o n X I ,

( c o n t i nued) A r t i c l e IW-5000.

4. 10 CFR 100.

5. ASME, B o i l e r and P r e s s u r e Vessel Code, S e c t i o n 111, 1965 E d i t i o n , i n c l u d i n g Addenda t o w i n t e r o f 1965.

6. ASME, B o i l e r and P r e s s u r e Vessel Code, S e c t i o n 111, 1980 E d i t i o n , Addenda t o w i n t e r o f 1981.

PBAPS UNIT 2 B 2.0-10 R e v i s i o n No.

C o n t r o l Rod Scram Times B 3.1.4 BASES (continued)

SURVEILLANCE The f o u r SRs o f t h i s LCO a r e m o d i f i e d b y a N o t e s t a t i n g t h a t REQUIREMENTS d u r i n g a s i n g l e c o n t r o l r o d scram t i m e s u r v e i l l a n c e , t h e CRD pumps s h a l l b e i s o l a t e d f r o m t h e a s s o c i a t e d s c r a m a c c u m u l a t o r . W i t h t h e CRD pump i s o l a t e d , ( i. e . , c h a r g i n g v a l v e c l o s e d ) t h e i n f l u e n c e o f t h e CRD pump head does n o t a f f e c t t h e s i n g l e c o n t r o l r o d scram t i m e s . D u r i n g a f u l l c o r e scram, t h e CRD pump head w o u l d b e seen b y a l l c o n t r o l r o d s and w o u l d have a n e g l i g i b l e e f f e c t on t h e scram i n s e r t i o n times.

SR 3.1 . 4 , 1 The scram r e a c t i v i t y used i n DBA and t r a n s i e n t a n a l y s e s i s b a s e d on an assumed c o n t r o l r o d scram t i m e . Measurement o f t h e scram t i m e s w i t h r e a c t o r steam dome p r e s s u r e z 800 p s i g d e m o n s t r a t e s a c c e p t a b l e scram t i m e s f o r t h e t r a n s i e n t s a n a l y z e d i n R e f e r e n c e s 3 and 4 .

Maximum scram i n s e r t i o n t i m e s o c c u r a t a r e a c t o r s t e a m dome p r e s s u r e o f a p p r o x i m a t e l y 800 p s i g because o f t h e c o m p e t i n g e f f e c t s o f r e a c t o r s t e a m dome p r e s s u r e and s t o r e d accumulator energy. Therefore, demonstration o f adequate scram t i m e s a t r e a c t o r steam dome p r e s s u r e 2 800 p s i g e n s u r e s t h a t t h e measured scram t i m e s w i l l b e w i t h i n t h e s p e c i f i e d l i m i t s a t higher pressures. L i m i t s a r e s p e c i f i e d as a f u n c t i o n o f r e a c t o r p r e s s u r e t o a c c o u n t f o r t h e s e n s i t i v i t y o f t h e s c r a m i n s e r t i o n t i m e s w i t h p r e s s u r e and t o a l l o w a range o f p r e s s u r e s o v e r w h i c h scram t i m e t e s t i n g c a n be p e r f o r m e d . To e n s u r e t h a t scram t i m e t e s t i n g i s p e r f o r m e d w i t h i n a r e a s o n a b l e t i m e a f t e r a shutdown 2 120 d a y s o r l o n g e r , a l l c o n t r o l r o d s a r e r e q u i r e d t o b e t e s t e d b e f o r e e x c e e d i n g 40% RTP. T h i s F r e q u e n c y i s acceptable considering t h e a d d i t i o n a l s u r v e i l l a n c e s p e r f o r m e d f o r c o n t r o l r o d OPERABILITY, t h e f r e q u e n t v e r i f i c a t i o n o f a d e q u a t e a c c u m u l a t o r p r e s s u r e , and t h e r e q u i r e d t e s t i n g o f c o n t r o l r o d s a f f e c t e d b y f u e l movement w i t h i n t h e a s s o c i a t e c o r e c e l l and by w o r k on c o n t r o l r o d s o r t h e CRD System.

SR 3.1.4.2 A d d i t i o n a l t e s t i n g o f a sample o f c o n t r o l r o d s i s r e q u i r e d t o v e r i f y t h e c o n t i n u e d p e r f o r m a n c e o f t h e scram f u n c t i o n d u r i n g t h e c y c l e . A r e p r e s e n t a t i v e sample c o n t a i n s a t l e a s t 10% o f t h e c o n t r o l r o d s . The sample r e m a i n s r e p r e s e n t a t i v e (continued)

PBAPS UNIT 2 B 3.1-25 R e v i s i o n No.

C o n t r o l Rod Scram Times B 3.1.4 BASES SURVEILLANCE SR 3.1.4.3 (continued)

REQUIRE~ENTS S p e c i f i c examples o f w o r k t h a t c o u l d a f f e c t t h e s c r a m t i m e s are (but are not limited to) the following: r e m o v a l o f any CRD f o r m a i n t e n a n c e o r m o d i f i c a t i o n ; r e p l a c e m e n t o f a c o n t r o l r o d ; and m a i n t e n a n c e o r m o d i f i c a t i o n o f a s c r a m s o l e n o i d p i l o t v a l v e , scram v a l v e , a c c u m u l a t o r , i s o l a t i o n v a l v e o r c h e c k v a l v e i n t h e p i p i n g r e q u i r e d f o r scram.

The F r e q u e n c y o f once p r i o r t o d e c l a r i n g t h e a f f e c t e d c o n t r o l r o d OPERABLE i s a c c e p t a b l e because o f t h e c a p a b i l i t y t o t e s t t h e c o n t r o l rod over a range o f o p e r a t i n g c o n d i t i o n s and t h e more f r e q u e n t s u r v e i l l a n c e s on o t h e r a s p e c t s o f c o n t r o l r o d OPERABILITY.

SR 3.1.4.4 When w o r k t h a t c o u l d a f f e c t t h e scram i n s e r t i o n t i m e i s p e r f o r m e d on a c o n t r o l r o d o r CRD System, o r when f u e l movement w i t h i n t h e r e a c t o r v e s s e l o c c u r s t e s t i n g m u s t b e done t o d e m o n s t r a t e e a c h a f f e c t e d c o n t r o l r o d i s s t i l l w i t h i n t h e l i m i t s o f T a b l e 3.1.4-1 w i t h t h e r e a c t o r steam dome p r e s s u r e 2 800 p s i g . Where w o r k has been p e r f o r m e d a t h i g h r e a c t o r p r e s s u r e , t h e r e q u i r e m e n t s o f SR 3.1.4.3 and SR 3.1.4.4 can b e s a t i s f i e d w i t h one t e s t . For a c o n t r o l r o d a f f e c t e d b y w o r k p e r f o r m e d w h i l e s h u t down, however, a z e r o p r e s s u r e and h i g h p r e s s u r e t e s t may b e r e q u i r e d . T h i s t e s t i n g ensures t h a t , p r i o r t o withdrawing t h e c o n t r o l r o d f o r c o n t i n u e d o p e r a t i o n , t h e c o n t r o l r o d scram performance i s acceptable f o r operating r e a c t o r pressure c o n d i t i o n s .

A l t e r n a t i v e l y , a c o n t r o l r o d scram t e s t d u r i n g h y d r o s t a t i c p r e s s u r e t e s t i n g c o u l d a l s o s a t i s f y b o t h c r i t e r i a . When f u e l movement o c c u r s w i t h i n t h e r e a c t o r p r e s s u r e v e s s e l ,

o n l y those c o n t r o l rods associated w i t h t h e core c e l l s a f f e c t e d b y t h e f u e l movement a r e r e q u i r e d t o b e s c r a m t i m e I

t e s t e d . During a r o u t i n e r e f u e l i n g outage, i t i s expected t h a t a17 c o n t r o l r o d s w i l l b e a f f e c t e d . I The F r e q u e n c y o f once p r i o r t o e x c e e d i n g 40% RTP i s a c c e p t a b l e because o f t h e c a p a b i l i t y t o t e s t t h e c o n t r o l r o d o v e r a r a n g e o f o p e r a t i n g c o n d i t i o n s and t h e more f r e q u e n t s u r v e i l l a n c e s on o t h e r a s p e c t s o f c o n t r o l r o d OPERABILITY.

REFERENCES 1. UFSAR, S e c t i o n s 1.5.1.3 and 1 . 5 . 2 . 2 .

2. UFSAR, S e c t i o n 14.6.2.

PBAPS U N I T 2 B 3.1-27 R e v i s i o n No.

SDV V e n t and D r a i n V a l v e s B 3.1.8 BASES APPLICABLE i n s t r u m e n t volume exceeds a s p e c i f i e d s e t p o i n t . The SAFETY ANALYSES s e t p o i n t i s chosen so t h a t a l l c o n t r o l r o d s a r e i n s e r t e d (continued) b e f o r e t h e SDV has i n s u f f i c i e n t volume t o a c c e p t a f u l l scram.

SDV v e n t and d r a i n v a l v e s s a t i s f y C r i t e r i o n 3 o f t h e NRC Pol i c y Statement.

LCO The OPERABILITY o f a l l SDV v e n t and d r a i n v a l v e s e n s u r e s t h a t t h e SDV v e n t and d r a i n v a l v e s w i l l c l o s e d u r i n g a scram t o c o n t a i n r e a c t o r w a t e r d i s c h a r g e d t o t h e SDV p i p i n g .

S i n c e t h e v e n t and d r a i n l i n e s a r e p r o v i d e d w i t h t w o v a l v e s i n s e r i e s , t h e s i n g l e f a i l u r e o f one v a l v e i n t h e open position w i l l not impair the isolation function o f the s y s t e m . A d d i t i o n a l l y , t h e v a l v e s a r e r e q u i r e d t o b e opened f o l l o w i n g scram r e s e t t o e n s u r e t h a t a p a t h i s a v a i l a b l e f o r t h e SDV p i p i n g t o d r a i n f r e e l y a t o t h e r t i m e s .

APPLICABILITY I n MODES 1 and 2, scram may be r e q u i r e d ; t h e r e f o r e , t h e SDV v e n t and d r a i n v a l v e s m u s t be OPERABLE. I n MODES 3 and 4, c o n t r o l r o d s a r e n o t a b l e t o be withdrawn s i n c e t h e r e a c t o r mode s w i t c h i s i n shutdown and a c o n t r o l r o d b l o c k i s a p p l i e d . T h i s p r o v i d e s adequate c o n t r o l s t o ensure t h a t o n l y a s i n g l e c o n t r o l r o d can b e w i t h d r a w n . A l s o , d u r i n g MODE 5 , o n l y a s i n g l e c o n t r o l r o d c a n b e w i t h d r a w n f r o m a c o r e c e l l c o n t a i n i n g f u e l a s s e m b l i e s . T h e r e f o r e , t h e SDV v e n t and d r a i n v a l v e s a r e n o t r e q u i r e d t o b e OPERABLE i n t h e s e MODES s i n c e t h e r e a c t o r i s s u b c r i t i c a l and o n l y one r o d may b e w i t h d r a w n and s u b j e c t t o scram.

ACTIONS The ACTIONS T a b l e i s m o d i f i e d b y N o t e s i n d i c a t i n g t h a t a s e p a r a t e C o n d i t i o n e n t r y i s a l l o w e d f o r e a c h SDV v e n t and d r a i n l i n e . This i s acceptable, since t h e Required Actions f o r each C o n d i t i o n p r o v i d e a p p r o p r i a t e compensatory a c t i o n s f o r e a c h i n o p e r a b l e SDV l i n e . C o m p l y i n g w i t h t h e R e q u i r e d A c t i o n s may a l l o w f o r c o n t i n u e d o p e r a t i o n , and s u b s e q u e n t i n o p e r a b l e SDV l i n e s a r e g o v e r n e d b y s u b s e q u e n t C o n d i t i o n e n t r y and a p p l i c a t i o n o f a s s o c i a t e d R e q u i r e d A c t i o n s .

When a l i n e i s i s o l a t e d , t h e p o t e n t i a l f o r an i n a d v e r t e n t scram due t o h i g h SDV l e v e l i s i n c r e a s e d . D u r i n g t h e s e p e r i o d s , t h e l i n e may b e u n i s o l a t e d u n d e r a d m i n i s t r a t i v e c o n t r o l . T h i s a l l o w s any a c c u m u l a t e d w a t e r i n t h e l i n e t o b e d r a i n e d , t o p r e c l u d e a r e a c t o r scram on SDV h i g h l e v e l .

This i s acceptable since t h e a d m i n i s t r a t i v e c o n t r o l s ensure t h e v a l v e can b e c l o s e d q u i c k l y , by a d e d i c a t e d o p e r a t o r , i f a scram o c c u r s w i t h t h e v a l v e open.

(continued 1 PBAPS UNIT 2 B 3.1-49 R e v i s i o n No.

SDV Vent a n d Drain Valves B 3.1.8 BASES ACTIONS -

A.1 (conti nued 1 When one SDV vent or drain valve i s inoperable i n one or more l i n e s , the associated l i n e must be i s o l a t e d t o contain the reactor coolant during a scram. The 7 d a y Completion Time i s reasonable, given the level o f redundancy in the I

l i n e s a n d the low probability of a scram occurring during the time the valves a r e inoperable a n d the l i n e i s n o t i s o l a t e d . The SDV i s s t i l l i s o l a b l e since the redundant valve in the affected l i n e i s O P E R A B ~ E . During these I

peri ods, the s i ngl e f ai 1 ure c r i t e r i on may n o t be preserved, and a higher r i s k e x i s t s t o allow reactor water o u t of the primary system during a scram.

I f b o t h valves in a l i n e are inoperable, t h e l i n e must be i s o l a t e d t o contain the reactor coolant during a scram.

The 8 hour9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months Completion Time t o i s o l a t e the l i n e i s based on the low probability of a scram occurring while the l i n e i s n o t i s o l a t e d a n d unlikelihood o f s i g n i f i c a n t CRD seal 1 ea kage.

If a n y Required Action a n d associated Completion Time i s n o t met, the plant must be brought t o a MODE i n which the LCO does n o t apply. To achieve t h i s s t a t u s , t h e plant must be brought t o a t l e a s t MODE 3 within 1 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months . The allowed Completion Time of 1 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months i s reasonable, based on operating experience, t o reach MODE 3 from f u l l power conditions in a n orderly manner a n d without challenging plant systems.

~ - -

(conti nued )

PBAPS UNIT 2 B 3.1-50 Revision No.

MCPR B 3.2.2 BASES SURVEILLANCE SR 3.2.2.1 (continued)

REQUIRE~ENTS i n t h e COLR ( R e f . 12) t o e n s u r e t h a t t h e r e a c t o r i s o p e r a t i n g w i t h i n t h e assumptions o f t h e s a f e t y a n a l y s i s .

The 24 h o u r Frequency i s based on b o t h e n g i n e e r i n g judgment and r e c o g n i t i o n o f t h e slowness o f changes i n power d i s t r i b u t i o n d u r i n g normal o p e r a t i o n . The 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months a l l o w a n c e a f t e r THERMAL POWER 2 25% RTP i s a c h i e v e d i s a c c e p t a b l e g i v e n t h e l a r g e i n h e r e n t m a r g i n t o o p e r a t i n g l i m i t s a t low power 1 eve1 s .

SR 3.2.2.2 Because t h e t r a n s i e n t a n a l y s i s t a k e s c r e d i t f o r c o n s e r v a t i s m i n t h e scram speed performance, i t must be d e m o n s t r a t e d t h a t t h e s p e c i f i c scram speed d i s t r i b u t i o n i s c o n s i s t e n t w i t h t h a t used i n t h e t r a n s i e n t a n a l y s i s . SR 3.2.2.2 d e t e r m i n e s t h e v a l u e o f z, w h i c h i s a measure o f t h e a c t u a l scram speed d i s t r i b u t i o n compared w i t h t h e assumed d i s t r i b u t i o n . The MCPR o p e r a t i n g l i m i t i s t h e n d e t e r m i n e d based on an i n t e r p o l a t i o n between t h e a p p l i c a b l e l i m i t s f o r O p t i o n A (scram t i m e s o f LCO 3 . 1 . 4 , " C o n t r o l Rod Scram Times") and O p t i o n B ( r e a l i s t i c scram t i m e s ) a n a l y s e s . The parameter z must be d e t e r m i n e d once w i t h i n 72 h o u r s a f t e r each s e t o f scram t i m e t e s t s r e q u i r e d b y SR 3.1.4.1, SR 3.1.4.2, and SR 3.1.4.4 because t h e e f f e c t i v e scram speed d i s t r i b u t i o n may change d u r i n g t h e c y c l e o r a f t e r maintenance t h a t c o u l d a f f e c t scram t i m e s . The 72 hour8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months C o m p l e t i o n Time i s a c c e p t a b l e due t o t h e r e l a t i v e l y m i n o r changes i n z e x p e c t e d during the fuel cycle.

REFERENCES 1. NUREG-0562, June 1979.

2. NEDO-24011-P-A, "General E l e c t r i c S t a n d a r d A p p l i c a t i o n f o r R e a c t o r Fuel , " l a t e s t approved r e v i s i on.

3. UFSAR, Chapter 3 .

4. UFSAR, Chapter 6 .

5. UFSAR, Chapter 14.

6. NEDO-24229-1, "Peach B o t t o m Atomic Power S t a t i o n U n i t s 2 and 3 , S i n g l e Loop O p e r a t i o n , " May 1980.

PBAPS UNIT 2 B 3.2-9 R e v i s i o n No.

Feedwater and Main T u r b i n e H i g h Water L e v e l T r i p I n s t r u m e n t a t i o n B 3.3.2.2 BASES ACTIONS B.1 (continued) s i g n a l on a v a l i d s i g n a l . T h i s r e q u i r e s one channel p e r t r i p system t o be OPERABLE o r i n t r i p . I f t h e r e q u i r e d channels cannot be r e s t o r e d t o OPERABLE s t a t u s o r p l a c e d i n t r i p , C o n d i t i o n C must be e n t e r e d and i t s R e q u i r e d A c t i o n taken.

The 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months C o m p l e t i o n Time i s s u f f i c i e n t f o r t h e o p e r a t o r t o t a k e c o r r e c t i v e a c t i o n , and t a k e s i n t o account t h e l i k e l i h o o d o f an e v e n t r e q u i r i n g a c t u a t i o n o f f e e d w a t e r and main t u r b i n e h i g h w a t e r l e v e l t r i p i n s t r u m e n t a t i o n o c c u r r i n g d u r i n g t h i s p e r i o d . I t i s a l s o c o n s i s t e n t w i t h t h e 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months C o m p l e t i o n Time p r o v i d e d i n LCO 3 . 2 . 2 f o r R e q u i r e d A c t i o n A . 1 , s i n c e t h i s i n s t r u m e n t a t i o n ' s purpose i s t o p r e c l u d e a MCPR v i o l a t i o n .

C . 1 and C.2 W i t h any R e q u i r e d A c t i o n and a s s o c i a t e d C o m p l e t i o n Time n o t met, t h e p l a n t must be b r o u g h t t o a MODE o r o t h e r s p e c i f i e d c o n d i t i o n i n w h i c h t h e LCO does n o t a p p l y . To a c h i e v e t h i s s t a t u s , THERMAL POWER must be reduced t o < 2 5 % RTP w i t h i n 4 h o u r s . A l t e r n a t i v e l y , t h e a f f e c t e d f e e d w a t e r pump(s> and a f f e c t e d main t u r b i n e v a l v e ( s 1 may be removed f r o m s e r v i c e since t h i s performs t h e intended f u n c t i o n o f t h e i n s t r u m e n t a t i o n . As d i s c u s s e d i n t h e A p p l i c a b i l i t y s e c t i o n o f t h e Bases, o p e r a t i o n below 2 5 % RTP r e s u l t s i n s u f f i c i e n t m a r g i n t o t h e r e q u i r e d l i m i t s , and t h e f e e d w a t e r and main t u r b i n e h i g h water l e v e l t r i p i n s t r u m e n t a t i o n i s n o t r e q u i r e d t o p r o t e c t f u e l i n t e g r i t y d u r i n g t h e feedwater c o n t r o l l e r f a i l u r e , maximum demand e v e n t . The a l l o w e d C o m p l e t i o n Time o f 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months i s based on o p e r a t i n g e x p e r i e n c e t o reduce THERMAL POWER t o < 2 5 % RTP f r o m f u l l power c o n d i t i o n s i n an o r d e r l y manner and w i t h o u t c h a l l e n g i n g p l a n t systems.

Required A c t i o n C . 1 i s m o d i f i e d by a Note w h i c h s t a t e s t h a t t h e Required A c t i o n i s o n l y a p p l i c a b l e i f t h e i n o p e r a b l e channel i s t h e r e s u l t o f an i n o p e r a b l e f e e d w a t e r pump t u r b i n e o r main t u r b i n e s t o p v a l v e . The Note c l a r i f i e s t h e s i t u a t i o n s under w h i c h t h e a s s o c i a t e d R e q u i r e d A c t i o n would be t h e a p p r o p r i a t e Required A c t i o n .

SURVEILLANCE The S u r v e i l l a n c e s a r e m o d i f i e d by a Note t o i n d i c a t e t h a t REQUIREMENTS when a channel i s p l a c e d i n an i n o p e r a b l e s t a t u s s o l e l y f o r performance o f r e q u i r e d S u r v e i l l a n c e s , e n t r y i n t o a s s o c i a t e d C o n d i t i o n s and R e q u i r e d A c t i o n s may be d e l a y e d f o r up t o 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months p r o v i d e d t h e a s s o c i a t e d F u n c t i o n m a i n t a i n s f e e d w a t e r and main t u r b i n e h i g h w a t e r l e v e l t r i p c a p a b i l i t y . Upon completion o f t h e S u r v e i l l a n c e , o r e x p i r a t i o n o f t h e 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months a l l o w a n c e , t h e channel must be r e t u r n e d t o OPERABLE s t a t u s o r t h e a p p l i c a b l e C o n d i t i o n e n t e r e d and R e q u i r e d A c t i o n s t a k e n . T h i s Note i s based on t h e r e l i a b i l i t y a n a l y s i s

( R e f . 2 ) assumption o f t h e average t i m e r e q u i r e d t o p e r f o r m (continued)

PBAPS U N I T 2 B 3.3-62 R e v i s i o n No.

PAM I ns t r umen t a t i on B 3.3.3.1 BASES LCO 7. Drywel 1 Hiah Ranae Radi a t i on (continued)

Instruments: RR-8103 A , B Drywell h i g h range radiation i s a Category I variable provided t o monitor the potential o f s i g n i f i c a n t radiation releases a n d t o provide release assessment for use by operators i n determining the need t o invoke s i t e emergency plans, Post accident drywell radiation l e v e l s a r e monitored by four instrument channels each w i t h a range o f 1 t o 1x108 Rlhr. These radiation monitors drive two d u a l channel recorders located i n the control room. Each recorder a n d the two associated channels a r e i n a separate d i v i s i o n . As such, two recorders a n d two channels of radiation monitoring instrumentation (one per recorder) a r e required t o be O P E R A B L E f o r compliance w i t h t h i s L C O . Therefore, t h e PAM Specification deals s p e c i f i c a l l y w i t h these portions o f the instrument channel s .

8. Primary Conta inment I s o l a t i o n Valve ( PCIV) Position P C I V position i s a Category I variable provided f o r v e r i f i c a t i o n o f containment i n t e g r i t y . I n the case o f PCIV position, the important information i s the i s o l a t i o n s t a t u s o f the containment penetration. The LCO requires one channel o f valve position indication i n the control room t o be O P E R A B L E f o r each a c t i v e PCIV i n a containment penetration f l o w p a t h , i . e . , two t o t a l channels o f PCIV p o s i t i o n indication f o r a penetration f l o w p a t h w i t h two a c t i v e valves, For containment penetrations w i t h o n l y one a c t i v e PCIV h a v i n g control room i n d i c a t i o n , Note ( b )

requires a s i n g l e channel of valve position i n d i c a t i o n t o be O P E R A B L E . This i s s u f f i c i e n t t o redundantly verify the i s o l a t i o n s t a t u s of each i s o l a b l e penetration v i a indicated s t a t u s o f the a c t i v e valve, as applicable, a n d p r i o r knowledge of passive valve or system boundary s t a t u s . I f a penetration f l o w p a t h i s i s o l a t e d , position indication for the PCIUs) i n the associated penetration f l o w p a t h i s n o t needed t o determine s t a t u s . Therefore, the position indication f o r valves i n a n i s o l a t e d penetration f l o w p a t h i s n o t required t o be O P E R A B L E . The P C I V position PAM instrumentation c o n s i s t s o f position switches, associated wiring a n d control room indicating lamps f o r a c t i v e PCIVs (check valves a n d manual valves a r e n o t required t o have position i n d i c a t i o n ) . Therefore, the PAM Specification deals s p e c i f i c a l l y w i t h these instrument channels.

E a c h penetration i s t r e a t e d separately a n d each penetration f l o w p a t h i s considered a separate function. Therefore, separate condition entry i s a 1 1 owed f o r each i noperabl e penetration f l o w p a t h .

(conti nued 1 PBAPS UNIT 2 B 3.3-69 Revision No.

ATWS-RPT I n s t r u m e n t a t i o n B 3.3.4.1 BASES ACTIONS D . 1 and 0.2 (continued) 6 h o u r s i s r e a s o n a b l e , based on o p e r a t i n g e x p e r i e n c e , b o t h t o r e a c h MODE 2 f r o m f u l l power c o n d i t i o n s and t o remove a r e c i r c u l a t i o n pump f r o m s e r v i c e i n an o r d e r l y manner and w i t h o u t c h a l l e n g i n g p l a n t systems.

R e q u i r e d A c t i o n D . 1 i s m o d i f i e d by a N o t e w h i c h s t a t e s t h a t t h e Required A c t i o n i s o n l y a p p l i c a b l e i f t h e i n o p e r a b l e channel i s t h e r e s u l t o f a n i n o p e r a b l e RPT b r e a k e r . The Note c l a r i f i e s t h e s i t u a t i o n s under which t h e a s s o c i a t e d R e q u i r e d A c t i o n w o u l d be t h e a p p r o p r i a t e R e q u i r e d A c t i o n .

SURVEILLANCE The S u r v e i l l a n c e s a r e m o d i f i e d b y a N o t e t o i n d i c a t e t h a t REQUIREMENTS when a c h a n n e l i s p l a c e d i n an i n o p e r a b l e s t a t u s s o l e l y f o r performance o f r e q u i r e d S u r v e i l l a n c e s , e n t r y i n t o t h e a s s o c i a t e d C o n d i t i o n s and R e q u i r e d A c t i o n s may be d e l a y e d f o r up t o 6 h o u r s p r o v i d e d t h e a s s o c i a t e d F u n c t i o n m a i n t a i n s ATWS-RPT t r i p c a p a b i l i t y . Upon c o m p l e t i o n o f t h e S u r v e i l l a n c e , o r e x p i r a t i o n o f t h e 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months allowance, t h e channel must be r e t u r n e d t o OPERABLE s t a t u s o r t h e a p p l i c a b l e C o n d i t i o n e n t e r e d and R e q u i r e d A c t i o n s t a k e n .

T h i s N o t e i s based on t h e r e l i a b i l i t y a n a l y s i s ( R e f . 1 )

a s s u m p t i o n o f t h e a v e r a g e t i m e r e q u i r e d t o p e r f o r m channel S u r v e i l l a n c e . That a n a l y s i s demonstrated t h a t t h e 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months t e s t i n g a l l o w a n c e does n o t s i g n i f i c a n t l y r e d u c e t h e p r o b a b i l i t y t h a t t h e r e c i r c u l a t i o n pumps w i l l t r i p when necessary.

SR 3.3.4.1. 1 Performance o f t h e C H A N N E ~ CHECK once e v e r y 12 h o u r s e n s u r e s t h a t a g r o s s f a i l u r e o f i n s t r u m e n t a t i o n has n o t o c c u r r e d . A CHANNEL CHECK i s n o r m a l l y a c o m p a r i s o n o f t h e p a r a m e t e r i n d i c a t e d on one c h a n n e l t o a s i m i l a r p a r a m e t e r on o t h e r c h a n n e l s . I t i s based on t h e a s s u m p t i o n t h a t i n s t r u m e n t c h a n n e l s m o n i t o r i n g t h e same p a r a m e t e r shou7d r e a d a p p r o x i m a t e l y t h e same v a l u e . S i g n i f i c a n t d e v i a t i o n s between t h e i n s t r u m e n t c h a n n e l s c o u l d be an i n d i c a t i o n o f e x c e s s i v e i n s t r u m e n t d r i f t i n one o f t h e c h a n n e l s o r s o m e t h i n g even more s e r i o u s . A CHANNEL CHECK w i l l d e t e c t g r o s s channel f a i l u r e ; t h u s , i t i s key t o v e r i f y i n g t h e i n s t r u m e n t a t i o n c o n t i n u e s t o o p e r a t e p r o p e r l y between each CHAN~EL CALIBRATION.

Agreement c r i t e r i a a r e d e t e r m i n e d by t h e p l a n t s t a f f based on a c o m b i n a t i o n o f t h e c h a n n e l i n s t r u m e n t u n c e r t a i n t i e s ,

i n c l u d i n g i n d i c a t i o n and r e a d a b i l i t y . I f a channel i s o u t s i d e t h e c r i t e r i a , i t may be an i n d i c a t i o n t h a t t h e i n s t r u m e n t has d r i f t e d o u t s i d e i t s l i m i t .

(continued)

PBAPS U N I T 2 B 3.3-89 R e v i s i o n No.

EOC-RPT I n s t r u m e n t a t i o n B 3.3.4.2 BASES ACTIONS

( c o n t i nued 1 A S it nd A.2 I W i t h one o r more r e q u i r e d c h a n n e l s i n o p e r a b l e , b u t w i t h EOC-RPT t r i p c a p a b i l i t y m a i n t a i n e d ( r e f e r t o R e q u i r e d I

A c t i o n B . 1 Bases), t h e EOC-RPT System i s c a p a b l e o f p e r f o r m i n g t h e i n t e n d e d . f u n c t i o n . However, t h e r e l i a b i l i t y and redundancy o f t h e EOC-RPT i n s t r u m e n t a t i o n i s reduced such t h a t a s i n g l e f a i l u r e i n t h e r e m a i n i n g t r i p system c o u l d r e s u l t i n t h e i n a b i l i t y o f t h e E O C - R P T System t o perform t h e intended f u n c t i o n . Therefore, o n l y a l i m i t e d t i m e i s a l l o w e d t o r e s t o r e compliance w i t h t h e LCO. Because o f t h e d i v e r s i t y o f sensors a v a i l a b l e t o p r o v i d e t r i p s i g n a l s , t h e low p r o b a b i l i t y o f e x t e n s i v e numbers o f i n o p e r a b i l i t i e s a f f e c t i n g a l l d i v e r s e F u n c t i o n s , and t h e l o w p r o b a b i l i t y o f an e v e n t r e q u i r i n g t h e i n i t i a t i o n o f an E O C - R P T , 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months i s p r o v i d e d t o r e s t o r e t h e i n o p e r a b l e channels (Required A c t i o n A . 1 ) . Alternately, the inoperable c h a n n e l s may be p l a c e d i n t r i p ( R e q u i r e d A c t i o n A . 2 ) s i n c e t h i s would c o n s e r v a t i v e l y compensate f o r t h e i n o p e r a b i l i t y ,

r e s t o r e c a p a b i l i t y t o accommodate a s i n g l e f a i l u r e , and a l l o w o p e r a t i o n t o c o n t i n u e . As n o t e d i n R e q u i r e d A c t i o n A.2, p l a c i n g t h e channel i n t r i p w i t h no f u r t h e r r e s t r i c t i o n s i s n o t a l l o w e d i f t h e i n o p e r a b l e channel i s t h e I

r e s u l t o f an i n o p e r a b l e b r e a k e r , s i n c e t h i s may n o t a d e q u a t e l y compensate f o r t h e i n o p e r a b l e b r e a k e r ( e . g . , t h e b r e a k e r may be i n o p e r a b l e such t h a t i t w i l l n o t open). I f i t i s n o t d e s i r e d t o p l a c e t h e channel i n t r i p ( e . g . , as i n t h e case where p l a c i n g t h e i n o p e r a b l e channel i n t r i p would r e s u l t i n an RPT, o r i f t h e i n o p e r a b l e channel i s t h e r e s u l t o f an i n o p e r a b l e b r e a k e r ) , C o n d i t i o n C must be e n t e r e d and i t s Required Actions taken.

R e q u i r e d A c t i o n B . 1 i s i n t e n d e d t o ensure t h a t a p p r o p r i a t e a c t i o n s are taken i f m u l t i p l e , inoperable, u n t r i p p e d c h a n n e l s w i t h i n t h e same F u n c t i o n r e s u l t i n t h e F u n c t i o n n o t m a i n t a i n i n g EOC-RPT t r i p c a p a b i l i t y . A F u n c t i o n i s c o n s i d e r e d t o be m a i n t a i n i n g EOC-RPT t r i p c a p a b i l i t y when s u f f i c i e n t channels a r e OPERABLE o r i n t r i p , such t h a t t h e EOC-RPT System w i l l g e n e r a t e a t r i p s i g n a l f r o m t h e g i v e n F u n c t i o n on a v a l i d s i g n a l and b o t h r e c i r c u l a t i o n pumps can be t r i p p e d . T h i s r e q u i r e s two channels o f t h e F u n c t i o n i n t h e same t r i p system, t o each be OPERABLE o r i n t r i p , and t h e a s s o c i a t e d E O C - R P T b r e a k e r s t o be OPERABLE.

(continued).

PBAPS U N I T 2 B 3.3-91.6 R e v i s i o n No.

EOC-RPT I n s t r u m e n t a t i o n B 3.3.4.2 BASES ACTIONS B.1 (continued)

The 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months C o m p l e t i o n Time i s s u f f i c i e n t t i m e f o r t h e o p e r a t o r t o t a k e c o r r e c t i v e a c t i o n , and t a k e s i n t o account t h e l i k e l i h o o d o f an e v e n t r e q u i r i n g a c t u a t i o n o f t h e EOC-RPT i n s t r u m e n t a t i o n d u r i n g t h i s p e r i o d . I t i s a l s o c o n s i s t e n t w i t h t h e 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months Completion Time p r o v i d e d i n LCO 3.2.1 and 3 . 2 . 2 f o r R e q u i r e d A c t i o n A . 1 , s i n c e t h i s i n s t r u m e n t a t i o n ' s purpose i s t o preclude a thermal l i m i t v i 01 a t i on.

C . 1 and C . 2 W i t h any R e q u i r e d A c t i o n and a s s o c i a t e d C o m p l e t i o n Time n o t met, THERMAL POWER must be reduced t o < 29.5% RTP w i t h i n 4 h o u r s . A l t e r n a t e l y , f o r an i n o p e r a b l e b r e a k e r ( e . g . , t h e b r e a k e r may be i n o p e r a b l e such t h a t i t w i l l n o t open) t h e a s s o c i a t e d r e c i r c u l a t i o n pump may be removed f r o m s e r v i c e ,

since t h i s performs t h e intended f u n c t i o n o f t h e i n s t r u m e n t a t i o n . The a l l o w e d C o m p l e t i o n Time o f 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months i s r e a s o n a b l e , based on o p e r a t i n g e x p e r i e n c e , t o reduce THERMAL POWER t o < 29.5% RTP f r o m f u l l power c o n d i t i o n s i n an o r d e r l y manner and w i t h o u t c h a l l e n g i n g p l a n t systems.

Required A c t i o n C . 1 i s m o d i f i e d by a Note w h i c h s t a t e s t i a t t h e Required A c t i o n i s o n l y a p p l i c a b l e i f t h e i n o p e r a b l e channel i s t h e r e s u l t o f an i n o p e r a b l e RPT b r e a k e r . The Note c l a r i f i e s t h e s i t u a t i o n s under w h i c h t h e a s s o c i a t e d Required A c t i o n w o u l d be t h e a p p r o p r i a t e R e q u i r e d A c t i o n .

SURVEILLANCE The S u r v e i l l a n c e s a r e m o d i f i e d by a Note t o i n d i c a t e t h a t REQUIREMENTS when a channel i s p l a c e d i n an i n o p e r a b l e s t a t u s s o l e l y f o r performance o f r e q u i r e d S u r v e i l l a n c e s , e n t r y i n t o a s s o c i a t e d C o n d i t i o n s and R e q u i r e d A c t i o n s may be d e l a y e d f o r up t o 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months p r o v i d e d t h e a s s o c i a t e d F u n c t i o n m a i n t a i n s EOC-RPT t r i p c a p a b i l i t y . Upon c o m p l e t i o n o f t h e S u r v e i l l a n c e , o r e x p i r a t i o n o f t h e 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months a l l o w a n c e , t h e channel must be r e t u r n e d t o OPERABLE s t a t u s o r t h e a p p l i c a b l e C o n d i t i o n e n t e r e d and R e q u i r e d A c t i o n s t a k e n . T h i s Note i s based on t h e r e l i a b i l i t y a n a l y s i s ( R e f . 5 ) assumption o f t h e average t i m e r e q u i r e d t o p e r f o r m channel S u r v e i l l a n c e . That a n a l y s i s demonstrated t h a t t h e 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months t e s t i n g a l l o w a n c e does n o t s i g n i f i c a n t l y reduce t h e p r o b a b i l i t y t h a t t h e r e c i r c u l a t i o n pumps w i l l t r i p when n e c e s s a r y .

( c o n t inued 1 PBAPS U N I T 2 B 3.3-91g R e v i s i o n No.

ECCS I n s t r u m e n t a t i o n B 3.3.5.1 BASES APPLICABLE w i t h t h e i r s e t p o i n t s w i t h i n t h e s p e c i f i e d A l l o w a b l e Values, SAFETY ANALYSES, where a p p r o p r i a t e . The a c t u a l s e t p o i n t i s c a l i b r a t e d LCO, and c o n s i s t e n t w i t h a p p l i c a b l e s e t p o i n t methodology assumptions.

APPLICABILITY T a b l e 3 . 3 . 5 . 1 - 1 i s m o d i f i e d by two f o o t n o t e s . F o o t n o t e ( a >

(continued i s added t o c l a r i f y t h a t t h e a s s o c i a t e d f u n c t i o n s a r e r e q u i r e d t o be OPERABLE i n MODES 4 and 5 o n l y when t h e i r s u p p o r t e d E C C S a r e r e q u i r e d t o be o p e r a b l e p e r LCO 3 . 5 . 2 ,

ECCS-Shutdown. F o o t n o t e ( b ) i s added t o show t h a t c e r t a i n ECCS i n s t r u m e n t a t i o n F u n c t i o n s a l s o p e r f o r m DG i n i t i a t i o n .

A l l o w a b l e Values a r e s p e c i f i e d f o r each ECCS F u n c t i o n s p e c i f i e d i n t h e Table. T r i p s e t p o i n t s a r e s p e c i f i e d i n t h e s e t p o i n t c a l c u l a t i o n s . The t r i p s e t p o i n t s a r e s e l e c t e d t o e n s u r e t h a t t h e s e t t i n g s do n o t exceed t h e A l l o w a b l e Value between CHANNEL CALIBRATIONS. O p e r a t i o n w i t h a t r i p s e t t i n g less conservative than the t r i p setpoint, b u t w i t h i n i t s A l l o w a b l e Value, i s a c c e p t a b l e . A channel i s i n o p e r a b l e i f i t s actual t r i p setpoint i s not within i t s required A l l o w a b l e Value. T r i p s e t p o i n t s a r e t h o s e p r e d e t e r m i n e d v a l u e s o f o u t p u t a t w h i c h an a c t i o n s h o u l d t a k e p l a c e . The s e t p o i n t s a r e compared t o t h e a c t u a l p r o c e s s parameter

( e . g . , r e a c t o r v e s s e l w a t e r l e v e l ) , and when t h e measured o u t p u t v a l u e o f t h e p r o c e s s parameter exceeds t h e s e t p o i n t ,

t h e a s s o c i a t e d d e v i c e (e.g., t r i p u n i t ) changes s t a t e . The a n a l y t i c o r design l i m i t s are derived from t h e l i m i t i n g v a l u e s o f t h e p r o c e s s parameters o b t a i n e d f r o m t h e s a f e t y a n a l y s i s o r o t h e r a p p r o p r i a t e documents. The A l l o w a b l e Values a r e d e r i v e d f r o m t h e a n a l y t i c o r d e s i g n l i m i t s ,

c o r r e c t e d f o r c a l i b r a t i o n , process, and i n s t r u m e n t e r r o r s .

The t r i p s e t p o i n t s a r e d e t e r m i n e d f r o m a n a l y t i c a l o r d e s i g n l i m i t s , c o r r e c t e d f o r c a l i b r a t i o n , p r o c e s s , and i n s t r u m e n t e r r o r s , as w e l l as, i n s t r u m e n t d r i f t . I n s e l e c t e d cases, t h e A l l o w a b l e Values and t r i p s e t p o i n t s a r e d e t e r m i n e d f r o m e n g i n e e r i n g judgement o r h i s t o r i c a l l y a c c e p t e d p r a c t i c e r e l a t i v e t o t h e i n t e n d e d f u n c t i o n s o f t h e c h a n n e l . The t r i p s e t p o i n t s d e t e r m i n e d i n t h i s manner p r o v i d e adequate p r o t e c t i o n by assuming i n s t r u m e n t and p r o c e s s u n c e r t a i n t i e s expected f o r t h e environments d u r i n g t h e o p e r a t i n g t i m e o f t h e a s s o c i a t e d channels a r e accounted f o r . For t h e Core Spray and LPCI Pump S t a r t - T i m e Delay R e l a y s , adequate margins f o r a p p l i c a b l e s e t p o i n t methodologies a r e i n c o r p o r a t e d i n t o t h e A l l o w a b l e Values and a c t u a l s e t p o i n t s .

I n g e n e r a l , t h e i n d i v i d u a l F u n c t i o n s a r e r e q u i r e d t o be OPERABLE i n t h e MODES o r o t h e r s p e c i f i e d c o n d i t i o n s t h a t may r e q u i r e ECCS ( o r DG) i n i t i a t i o n t o m i t i g a t e t h e consequences o f a d e s i g n b a s i s t r a n s i e n t o r a c c i d e n t . To ensure r e l i a b l e ECCS and DG f u n c t i o n , a c o m b i n a t i o n o f F u n c t i o n s i s r e q u i r e d t o p r o v i d e p r i m a r y and secondary i n i t i a t i o n s i g n a l s .

(continued)

PBAPS U N I T 2 B 3.3-99 R e v i s i o n No.

ECCS I n s t r u m e n t a t i o n B 3.3.5.1 BASES APPLICABLE The s p e c i f i c A p p l i c a b l e S a f e t y A n a l y s e s , LCO, and SAFETY ANALYSES, A p p l i c a b i l i t y d i s c u s s i o n s a r e l i s t e d b e l o w on a F u n c t i o n b y LCO, and Function basis.

APPLICABILITY (continued)

C o r e Sp r a v and Low P r e s s u r e Coo 1 ant 1n.i' e c t i o n Svstems L a . 2.a . R e a c t o r Vesse 1 Water Leve 1-Low Low Low ( L e v e 1 1)

Low r e a c t o r p r e s s u r e v e s s e l ( R P V ) w a t e r l e v e l i n d i c a t e s t h a t t h e c a p a b i l i t y t o c o o l t h e f u e l may b e t h r e a t e n e d . Should RPV w a t e r l e v e l d e c r e a s e t o o far, f u e l damage c o u l d r e s u l t .

The l o w p r e s s u r e ECCS and a s s o c i a t e d DGs a r e i n i t i a t e d a t R e a c t o r Vessel Water L e v e l -Low Low Low ( L e v e l 1 ) t o e n s u r e t h a t c o r e s p r a y and f l o o d i n g f u n c t i o n s a r e a v a i l a b l e t o p r e v e n t o r m i n i m i z e f u e l damage. The DGs a r e i n i t i a t e d f r o m Function 1.a s i g n a l s . This Function, i n conjunction w i t h a Reactor Pressure-Low ( I n j e c t i o n Permissive) s i g n a l , a l s o i n i t i a t e s t h e c l o s u r e o f t h e R e c i r c u l a t i o n Discharge Valves t o e n s u r e t h e LPCI subsystems i n j e c t i n t o t h e p r o p e r RPV l o c a t i o n . The R e a c t o r Vessel Water L e v e l - L o w Low Low

( L e v e l 1) i s one o f t h e F u n c t i o n s assumed t o b e OPERABLE and c a p a b l e o f i n i t i a t i n g t h e ECCS d u r i n g t h e t r a n s i e n t s a n a l y z e d i n R e f e r e n c e s 1 and 3. I n a d d i t i o n , t h e R e a c t o r V e s s e l Water L e v e l -Low Low Low ( L e v e l 1) F u n c t i o n i s d i r e c t l y assumed i n t h e a n a l y s i s o f t h e r e c i r c u l a t i o n l i n e b r e a k ( R e f . 4 ) and t h e c o n t r o l r o d d r o p a c c i d e n t ( C R D A )

a n a l y s i s . The c o r e c o o l i n g f u n c t i o n o f t h e ECCS, a l o n g w i t h t h e scram a c t i o n o f t h e R e a c t o r P r o t e c t i o n System ( R P S ) ,

e n s u r e s t h a t t h e f u e l peak c l a d d i n g t e m p e r a t u r e r e m a i n s b e l o w t h e l i m i t s o f 10 CFR 50.46.

R e a c t o r V e s s e l Water L e v e l -Low Low Low ( L e v e l 1) s i g n a l s a r e i n i t i a t e d f r o m f o u r l e v e l t r a n s m i t t e r s t h a t sense t h e d i f f e r e n c e b e t w e e n t h e p r e s s u r e due t o a c o n s t a n t column o f w a t e r ( r e f e r e n c e l e g ) and t h e p r e s s u r e due t o t h e a c t u a l water l e v e l ( v a r i a b l e l e g ) i n t h e vessel.

The R e a c t o r Vessel W a t e r L e v e l -Low Low Low ( L e v e l 1)

A l l o w a b l e Value i s chosen t o a l l o w t i m e f o r t h e l o w p r e s s u r e c o r e f l o o d i n g s y s t e m s t o a c t i v a t e and p r o v i d e a d e q u a t e c o o l ing.

Four c h a n n e l s o f R e a c t o r Vessel Water L e v e l -Low Low Low

( L e v e l 1) F u n c t i o n a r e o n l y r e q u i r e d t o b e OPERABLE when t h e ECCS a r e r e q u i r e d t o b e OPERABLE t o e n s u r e t h a t no s i n g l e i n s t r u m e n t f a i 1 u r e c a n p r e c l ude ECCS I (continued)

PBAPS UNIT 2 B 3.3-100 R e v i s i o n No.

ECCS In s t r u m e n t a t i on B 3.3.5.1 BASES APPLICABLE L a . 2.a. Reacto r Vesse 1 Wate r Leve 1-Low Low Low ( L e v e l 1)

SAFETY ANALYSES, (continued)

LCO, and APPLICABILITY i n i t i a t i o n . P e r f o o t n o t e ( a > t o T a b l e 3 . 3 . 5 . 1 - 1 , t h i s ECCS f u n c t i o n i s o n l y r e q u i r e d t o be OPERABLE i n MODES 4 and 5 whenever t h e a s s o c i a t e d ECCS i s r e q u i r e d t o be OPERABLE p e r LCO 3 . 5 . 2 . R e f e r t o LCO 3.5.1 and LCO 3 . 5 . 2 , " E C C S -

Shutdown," f o r A p p l i c a b i l i t y Bases f o r t h e l o w p r e s s u r e ECCS subsystems; LCO 3.8.1, "AC S o u r c e s - O p e r a t i n g " ; and LCO 3 . 8 . 2 , " A C Sources-Shutdown," f o r A p p l i c a b i l i t y Bases f o r t h e DGs.

1.b. 2.b. D r v w e l l Pressure-High High pressure i n t h e drywell could i n d i c a t e a break i n t h e r e a c t o r c o o l a n t p r e s s u r e boundary ( R C P B ) . The 1 ow p r e s s u r e ECCS and a s s o c i a t e d DGs a r e i n i t i a t e d upon r e c e i p t o f t h e D r y w e l l P r e s s u r e - H i g h F u n c t i o n w i t h a R e a c t o r Pressure-Low

( I n j e c t i o n Permissive) i n order t o minimize t h e p o s s i b i l i t y o f f u e l damage. The DGs a r e i n i t i a t e d f r o m F u n c t i o n 1.b signals. This Function also i n i t i a t e s the closure o f the r e c i r c u l a t i o n d i s c h a r g e v a l v e s t o e n s u r e t h e LPCI subsystems i n j e c t i n t o t h e p r o p e r RPV l o c a t i o n . The D r y w e l l P r e s s u r e - H i g h F u n c t i o n w i t h a Reactor Pressure-Low

( I n j e c t i o n P e r m i s s i v e ) , a l o n g w i t h t h e R e a c t o r Water Level-Low Low Low ( L e v e l 1) F u n c t i o n , i s d i r e c t l y assume.d i n t h e a n a l y s i s o f t h e r e c i r c u l a t i o n l i n e break (Ref. 4 ) .

The c o r e c o o l i n g f u n c t i o n o f t h e ECCS, a l o n g w i t h t h e scram a c t i o n o f t h e RPS, ensures t h a t t h e f u e l peak c l a d d i n g t e m p e r a t u r e remains below t h e l i m i t s o f 10 CFR 50.46.

High drywell pressure s i g n a l s are i n i t i a t e d from f o u r p r e s s u r e t r a n s m i t t e r s t h a t sense d r y w e l l p r e s s u r e . The A l l o w a b l e Value was s e l e c t e d t o be a s l o w as p o s s i b l e and be i n d i c a t i v e o f a LOCA i n s i d e p r i m a r y c o n t a i n m e n t .

The D r y w e l l P r e s s u r e - H i g h F u n c t i o n i s r e q u i r e d t o be OPERABLE when t h e ECCS o r DG i s r e q u i r e d t o be OPERABLE i n c o n j u n c t i o n w i t h t i m e s when t h e p r i m a r y c o n t a i n m e n t i s r e q u i r e d t o be OPERABLE. Thus, f o u r channels o f t h e C S and LPCI D r y w e l l P r e s s u r e - H i g h F u n c t i o n a r e r e q u i r e d t o be OPERABLE i n MODES 1, 2, and 3 t o ensure t h a t no s i n g l e i n s t r u m e n t f a i l u r e can p r e c l u d e ECCS and DG i n i t i a t i o n . I n MODES 4 and 5 , t h e D r y w e l l P r e s s u r e - H i g h F u n c t i o n i s n o t r e q u i r e d , s i n c e t h e r e i s i n s u f f i c i e n t energy i n t h e r e a c t o r t o p r e s s u r i z e t h e primary containment t o Drywell Pressure-H i g h s e t p o i n t . R e f e r t o LCO 3.5.1 f o r A p p l i c a b i l i t y Bases f o r t h e l o w p r e s s u r e ECCS subsystems and t o LCO 3 . 8 . 1 f o r A p p l i c a b i l i t y Bases f o r t h e DGs.

(continueU PBAPS U N I T 2 B 3.3-101 R e v i s i o n No.

ECCS I n s t r u m e n t a t i o n B 3.3.5.1 BASES APPLICABLE 1.c. 2.c. R e a c t o r Pressure-Low ( I n .i e c t i o n P e r m i s s i v e )

SAFETY ANALYSES, LCO, and Low r e a c t o r p r e s s u r e s i g n a l s a r e used as p e r m i s s i v e s f o r t h e APPLICABILITY l o w p r e s s u r e ECCS subsystems. T h i s ensures t h a t , p r i o r t o

( c o n t inued ) opening t h e i n j e c t i o n v a l v e s o f t h e l o w p r e s s u r e ECCS subsystems o r i n i t i a t i n g t h e l o w p r e s s u r e ECCS subsystems on a D r y w e l l P r e s s u r e - H i g h s i g n a l , t h e r e a c t o r p r e s s u r e has f a l l e n t o a v a l u e below t h e s e subsystems' maximum d e s i g n p r e s s u r e and a b r e a k i n s i d e t h e RCPB has o c c u r r e d respectively. This Function also provides permissive f o r t h e c l o s u r e o f t h e r e c i r c u l a t i o n discharge valves t o ensure t h e LPCI subsystems i n j e c t i n t o t h e p r o p e r R P V l o c a t i o n .

The R e a c t o r Pressure-Low i s one o f t h e F u n c t i o n s assumed t o be OPERABLE and c a p a b l e o f p e r m i t t i n g i n i t i a t i o n o f t h e ECCS d u r i n g t h e t r a n s i e n t s a n a l y z e d i n References 1 and 3. I n a d d i t i o n , t h e R e a c t o r Pressure-Low F u n c t i o n i s d i r e c t l y assumed i n t h e a n a l y s i s o f t h e r e c i r c u l a t i o n l i n e b r e a k

( R e f . 4 ) . The c o r e c o o l i n g f u n c t i o n o f t h e ECCS, a l o n g w i t h t h e scram a c t i o n o f t h e RPS, ensures t h a t t h e f u e l peak c l a d d i n g t e m p e r a t u r e remains below t h e l i m i t s o f 10 CFR 50.46.

The R e a c t o r Pressure-Low s i g n a l s a r e i n i t i a t e d f r o m f o u r p r e s s u r e t r a n s m i t t e r s t h a t sense t h e r e a c t o r dome p r e s s u r e .

The A l l o w a b l e Value i s l o w enough t o p r e v e n t o v e r p r e s s u r i n g t h e equipment i n t h e l o w p r e s s u r e ECCS, b u t h i g h enough t o ensure t h a t t h e ECCS i n j e c t i o n p r e v e n t s t h e f u e l peak c l a d d i n g temperature from exceeding t h e l i m i t s o f 10 CFR 50.46.

Four c h a n n e l s o f R e a c t o r Pressure-Low F u n c t i o n a r e o n l y r e q u i r e d t o be OPERABLE when t h e ECCS i s r e q u i r e d t o be OPERABLE t o e n s u r e t h a t no s i n g l e i n s t r u m e n t f a i l u r e can p r e c l u d e ECCS i n i t i a t i o n . Per F o o t n o t e ( a ) t o T a b l e 3.3.5.1-1, t h i s ECCS Function i s o n l y r e q u i r e d t o be OPERABLE i n MODES 4 and 5 whenever t h e a s s o c i a t e d ECCS i s r e q u i r e d t o be OPERABLE p e r LCO 3.5.2. R e f e r t o LCO 3.5.1 and LCO 3.5.2 f o r A p p l i c a b i l i t y Bases f o r t h e l o w p r e s s u r e ECCS subsystems.

L d . 2 4 . c o r e Sr,r a y and Low Pressu r e Coo l a n t I n j e c t i o n Pump D i s c h a r s e F1 ow-Low (Bypass 1 The minimum f l o w i n s t r u m e n t s a r e p r o v i d e d t o p r o t e c t t h e a s s o c i a t e d l o w p r e s s u r e ECCS pump f r o m o v e r h e a t i n g when t h e pump i s o p e r a t i n g and t h e a s s o c i a t e d i n j e c t i o n v a l v e i s n o t f u l l y open. The m i n i ~ u mf l o w l i n e v a l v e i s opened when l o w f l o w i s sensed, and t h e v a l v e i s a u t o m a t i c a l l y c l o s e d when t h e f l o w r a t e i s adequate t o p r o t e c t t h e pump. The LPCI and PBAPS U N I T 2 B 3.3-102 R e v i s i o n No.

ECCS I n s t r u m e n t a t i o n B 3.3.5.1 BASES APPLICABLE 1.d. 2 . s . Core SD r a v a nd Low P r e s s u r e C o o l a n t I n . i e c t i o n .

SAFETY ANALYSES, Pump D i s c h a r s e Flow-Low (ByDass) c o n t inued 1 LCO, and APPLICABILITY CS Pump D i s c h a r g e Flow-Low F u n c t i o n s a r e assumed t o be OPERABLE and c a p a b l e o f c l o s i n g t h e minimum f l o w v a l v e s t o ensure t h a t t h e l o w p r e s s u r e ECCS f l o w s assumed d u r i n g t h e t r a n s i e n t s and a c c i d e n t s a n a l y z e d i n References 1, 2 , and 3 a r e met. The c o r e c o o l i n g f u n c t i o n o f t h e ECCS, a l o n g w i t h t h e scram a c t i o n o f t h e RPS, ensures t h a t t h e f u e l peak c l a d d i n g t e m p e r a t u r e remains below t h e l i m i t s o f 10 CFR 50.46.

One d i f f e r e n t i a l p r e s s u r e s w i t c h p e r ECCS pump i s used t o d e t e c t t h e a s s o c i a t e d subsystems' f l o w r a t e s . The l o g i c i s a r r a n g e d such t h a t each s w i t c h causes i t s a s s o c i a t e d minimum f l o w v a l v e t o open. The l o g i c w i l l c l o s e t h e minimum f l o w v a l v e once t h e c l o s u r e s e t p o i n t i s exceeded. The LPCI minimum f l o w v a l v e s a r e t i m e d e l a y e d such t h a t t h e v a l v e s w i l l n o t open f o r 10 seconds a f t e r t h e s w i t c h e s d e t e c t l o w f l o w . The t i m e d e l a y i s p r o v i d e d t o l i m i t r e a c t o r v e s s e l i n v e n t o r y l o s s d u r i n g t h e s t a r t u p o f t h e RHR shutdown c o o l ing mode. The Pump D i s c h a r g e F1 ow- Low A1 1 owabl e V a l ues a r e h i g h enough t o ensure t h a t t h e pump f l o w r a t e i s s u f f i c i e n t t o p r o t e c t t h e pump, y e t l o w enough t o e n s u r e t h a t t h e c l o s u r e o f t h e minimum f l o w v a l v e i s i n i t i . a t e d t o a l l o w f u l l f l o w i n t o t h e core.

Each channel o f Pump D i s c h a r g e Flow-Low F u n c t i o n ( f o u r CS channels and f o u r LPCI c h a n n e l s ) i s o n l y r e q u i r e d t o be OPERABLE when t h e a s s o c i a t e d ECCS i s r e q u i r e d t o be OPERABLE t o e n s u r e t h a t no s i n g l e i n s t r u m e n t f a i l u r e can p r e c l u d e t h e ECCS f u n c t i o n . Per f o o t n o t e ( a ) t o T a b l e 3 . 3 . 5 . 1 - 1 , t h i s '

ECCS F u n c t i o n i s o n l y r e q u i r e d t o be OPERABLE i n MODES 4 and 5 whenever t h e a s s o c i a t e d ECCS i s r e q u i r e d t o be OPERABLE p e r LCO 3.5.2. R e f e r t o LCO 3.5.1 and LCO 3.5.2 f o r A p p l i c a b i l i t y Bases f o r t h e l o w p r e s s u r e ECCS subsystems.

1.e. 1.f. Co r e SDrav Pump S t a rt-Time De l a y Re 1 ay The purpose o f t h i s t i m e d e l a y i s t o s t a g g e r t h e s t a r t o f t h e CS pumps t h a t a r e i n each o f D i v i s i o n s I and I 1 t o p r e v e n t o v e r l o a d i n g t h e power source. T h i s F u n c t i o n i s necessary when power i s b e i n g s u p p l i e d f r o m t h e o f f s i t e sources o r t h e standby power sources ( D G ) . The C S Pump S t a r t - T i m e Delay Relays a r e assumed t o be OPERABLE i n t h e a c c i d e n t and t r a n s i e n t a n a l y s e s r e q u i r i n g ECCS i n i t i a t i o n .

That i s , t h e a n a l y s e s assume t h a t t h e pumps w i l l i n i t i a t e when r e q u i r e d and excess l o a d i n g w i l l n o t cause f a i l u r e o f t h e power s o u r c e s .

(continued)

PBAPS U N I T 2 B 3.3-103 R e v i s i o n No.

ECCS I n s t r u m e n t a t i o n B 3.3.5.1 BASES APPLICABLE l e e . 1. f . co r e Sway Pump S t a rt-Time De l a y Re 1 a v SAFETY ANALYSES, (continued)

LCO, and APPLICABILITY There a r e e i g h t Core Spray Pump S t a r t - T i m e Delay R e l a y s ,

two i n each o f t h e CS pump s t a r t l o g i c c i r c u i t s (one f o r when o f f s i t e power i s a v a i l a b l e and one f o r when o f f s i t e power i s n o t a v a i l a b l e ) . One o f each t y p e o f t i m e d e l a y r e l a y i s d e d i c a t e d t o a s i n g l e pump s t a r t l o g i c , such t h a t a s i n g l e f a i l u r e o f a Core Spray Pump S t a r t - T i m e Delay Relay w i l l n o t r e s u l t i n t h e f a i l u r e o f more t h a n one CS pump. I n t h i s c o n d i t i o n , t h r e e o f t h e f o u r C S pumps w i l l remain OPERABLE; t h u s , t h e s i n g l e f a i l u r e c r i t e r i o n i s met ( i . e . ,

l o s s o f one i n s t r u m e n t does n o t p r e c l u d e ECCS i n i t i a t i o n ) .

The A l l o w a b l e Value f o r t h e Core Spray Pump S t a r t - T i m e Delay Relays i s chosen t o be l o n g enough s o t h a t t h e power s o u r c e w i l l n o t be o v e r l o a d e d and s h o r t enough so t h a t ECCS o p e r a t i o n i s n o t degraded.

Each channel o f Core Spray Pump S t a r t - T i m e D e l a y Relay F u n c t i o n i s r e q u i r e d t o be OPERABLE o n l y when t h e a s s o c i a t e d CS subsystem i s r e q u i r e d t o be OPERABLE. Per f o o t n o t e ( a )

t o T a b l e 3 . 3 . 5 . 1 - 1 , t h i s ECCS F u n c t i o n i s o n l y r e q u i r e d t o be OPERABLE i n MODES 4 and 5 whenever t h e a s s o c i a t e d ECCS i s r e q u i r e d t o be OPERABLE p e r LCO 3 . 5 . 2 . R e f e r t o LCO 3 . 5 . 1 and LCO 3.5.2 f o r A p p l i c a b i l i t y Bases f o r t h e CS subsystems.

- R ' i h Valve P e r m i s s i v e )

Low r e a c t o r p r e s s u r e s i g n a l s a r e used as p e r m i s s i v e s f o r r e c i r c u l a t i o n d i s c h a r g e v a l v e c l o s u r e . T h i s ensures t h a t t h e LPCI subsystems i n j e c t i n t o t h e p r o p e r RPV l o c a t i o n assumed i n t h e s a f e t y a n a l y s i s . The R e a c t o r Pressure-Low Low i s one o f t h e F u n c t i o n s assumed t o be OPERABLE and capable o f c l o s i n g t h e v a l v e d u r i n g t h e t r a n s i e n t s analyzed i n References 1 and 3. The c o r e c o o l i n g f u n c t i o n o f t h e ECCS, a l o n g w i t h t h e scram a c t i o n o f t h e RPS, ensures t h a t t h e f u e l peak c l a d d i n g t e m p e r a t u r e remains below t h e l i m i t s o f 10 C F R 50.46. The Reactor Pressure-Low Low F u n c t i o n i s d i r e c t l y assumed i n t h e a n a l y s i s o f t h e r e c i r c u l a t i o n l i n e break (Ref. 4 ) .

The Reactor Pressure-Low Low s i g n a l s a r e i n i t i a t e d from f o u r p r e s s u r e t r a n s m i t t e r s t h a t sense t h e r e a c t o r p r e s s u r e .

The A l l o w a b l e Value i s chosen t o e n s u r e t h a t t h e v a l v e s c l o s e p r i o r t o commencement o f LPCI i n j e c t i o n f l o w i n t o t h e c o r e , a s assumed i n t h e s a f e t y a n a l y s i s .

( c o n t inued 1 PBAPS U N I T 2 B 3.3-104 R e v i s i o n No.

ECCS I n s t r u m e n t a t i o n B 3.3.5.1 BASES APPLICABLE 2.e* R e a c t o r Vesse 1 S h r o u d L e v e l -L e v e l 0 (continued)

SAFETY ANALYSES, LCO, and Two c h a n n e l s o f t h e R e a c t o r V e s s e l S h r o u d L e v e l - L e v e l 0 APPLICABIL~TY F u n c t i o n a r e o n l y r e q u i r e d t o b e OPERABLE i n MODES 1, 2, and 3 . I n MODES 4 and 5 , t h e s p e c i f i e d i n i t i a t i o n t i m e o f t h e LPCI subsystems i s n o t assumed, and o t h e r a d m i n i s t r a t i v e c o n t r o l s a r e adequate t o c o n t r o l t h e v a l v e s a s s o c i a t e d w i t h t h i s F u n c t i o n ( s i n c e t h e systems t h a t t h e v a l v e s a r e opened f o r a r e n o t r e q u i r e d t o b e OPERABLE i n MODES 4 and 5 and a r e n o r m a l l y n o t used).

2*f. Low P r e s s u r e Cool a n t 1 n . i e c t *i o n Pump S t a r t - T i m e De 1 a y Relav The p u r p o s e o f t h i s t i m e d e l a y i s t o s t a g g e r t h e s t a r t o f t h e LPCI pumps t h a t a r e i n e a c h o f D i v i s i o n s I and 11, t o p r e v e n t o v e r l o a d i n g t h e power s o u r c e . T h i s F u n c t i o n i s o n l y n e c e s s a r y when power i s b e i n g s u p p l i e d f r o m o f f s i t e s o u r c e s .

The LPCI pumps s t a r t s i m u l t a n e o u s l y w i t h no t i m e d e l a y as soon as t h e s t a n d b y s o u r c e i s a v a i l a b l e . The LPCI Pump S t a r t - T i m e D e l a y R e l a y s a r e assumed t o b e OPERABLE i n t h e a c c i d e n t and t r a n s i e n t a n a l y s e s r e q u i r i n g ECCS i n i t i a t i o n .

T h a t i s , t h e a n a l y s e s assume t h a t t h e pumps w i l l i n i t i a t e when r e q u i r e d and e x c e s s l o a d i n g w i l l n o t cause f a i l u r e o f t h e power s o u r c e s .

T h e r e a r e e i g h t LPCI Pump S t a r t - T i m e D e l a y R e l a y s , t w o i n e a c h o f t h e RHR pump s t a r t l o g i c c i r c u i t s . Two t i m e d e l a y r e l a y s a r e d e d i c a t e d t o a s i n g l e pump s t a r t l o g i c . B o t h t i m e r s i n t h e RHR pump s t a r t l o g i c w o u l d h a v e t o f a i l t o p r e v e n t an RHR pump f r o m s t a r t i n g w i t h i n t h e r e q u i r e d t i m e ;

t h e r e f o r e , t h e l o w p r e s s u r e ECCS pumps w i l l r e m a i n OPERABLE; t h u s , t h e s i n g l e f a i l u r e c r i t e r i o n i s met ( i . e . , l o s s o f one i n s t r u m e n t does n o t p r e c l u d e ECCS i n i t i a t i o n ) . The A l l o w a b l e V a l u e s f o r t h e LPCI Pump S t a r t - T i m e D e l a y R e l a y s a r e chosen t o b e l o n g enough so t h a t m o s t o f t h e s t a r t i n g t r a n s i e n t o f t h e f i r s t pump i s c o m p l e t e b e f o r e s t a r t i n g t h e second pump on t h e same 4 kV emergency b u s and s h o r t enough s o t h a t ECCS o p e r a t i o n i s n o t d e g r a d e d .

Each c h a n n e l o f LPCI Pump S t a r t - T i m e D e l a y R e l a y F u n c t i o n i s r e q u i r e d t o b e OPERABLE o n l y when t h e a s s o c i a t e d LPCI s u b s y s t e m i s r e q u i r e d t o b e OPERABLE. P e r f o o t n o t e f a > t o T a b l e 3 . 3 . 5 . 1 - 1 , t h i s ECCS F u n c t i o n i s o n l y r e q u i r e d t o b e OPERABLE i n MODES 4 and 5 whenever t h e a s s o c i a t e d ECCS i s r e q u i r e d t o be OPERABLE p e r LCO 3 . 5 . 2 . R e f e r t o LCO 3 . 5 . 1 and LCO 3 . 5 . 2 f o r A p p l i c a b i l i t y Bases T o r t h e LPCI subsystems.

(continuedl PBAPS UNIT 2 B 3.3-106 R e v i s i o n No.

Primary C o n t a i n m e n t I s 0 1 a t i o n I n s t r u m e n t a t i o n B 3.3.6.1 BASES

5. R e a c t o r Water Cleanup System I s o l a t i o n (continued)

System I s o l a t i o n F u n c t i o n r e c e i v e s i n p u t f r o m t w o c h a n n e l s w i t h each c h a n n e l i n one t r i p s y s t e m u s i n g a o n e - o u t - o f - o n e l o g i c . When e i t h e r SLC pump i s s t a r t e d r e m o t e l y , one c h a n n e l t r i p s t h e i n b o a r d i s o l a t i o n v a l v e and one c h a n n e l is o l a t e s t h e o u t b o a r d is o l a t i o n v a l v e s .

The RWCU I s o l a t i o n F u n c t i o n i s o l a t e s t h e i n b o a r d and o u t b o a r d RWCU pump s u c t i o n p e n e t r a t i o n and t h e o u t b o a r d v a l v e a t t h e RWCU c o n n e c t i o n t o r e a c t o r f e e d w a t e r .

6. Shutdown C o o l i n s S,vstem I s o l a t i o n The R e a c t o r V e s s e l Water L e v e l -Low ( L e v e l 3 ) F u n c t i o n receives i n p u t from f o u r r e a c t o r vessel water l e v e l c h a n n e l s . The o u t p u t s f r o m t h e c h a n n e l s a r e c o n n e c t e d t o a one-out-of-two taken t w i c e l o g i c , which i s o l a t e s both valves on t h e RHR shutdown c o o l i n g pump s u c t i o n p e n e t r a t i o n . The R e a c t o r P r e s s u r e - H i gh F u n c t i o n r e c e i v e s i n p u t f r o m t w o c h a n n e l s , w i t h each c h a n n e l i n one t r i p s y s t e m u s i n g a o n e - o u t - o f - o n e l o g i c . Each t r i p s y s t e m i s c o n n e c t e d t o b o t h v a l v e s on t h e RHR shutdown c o o l i n g pump s u c t i o n p e n e t r a t i o n .

7. Feedwater R e c i r c u l a t i o n I s o l a t i o n The R e a c t o r P r e s s u r e - H i g h F u n c t i o n r e c e i v e s i n p u t s f r o m f o u r c h a n n e l s . The o u t p u t s f r o m t h e f o u r c h a n n e l s a r e connected i n t o a one-out-of-two taken t w i c e l o g i c which is o l a t e s t h e f e e d w a t e r r e c i r c u l a t i o n v a l v e s .

8. T r a v e r s i n q I n c o r e P r o b e S.ystem I s o l a t i o n I

The R e a c t o r Vessel Water L e v e l -Low, L e v e l 3 I s o l a t i o n F u n c t i o n r e c e i v e s i n p u t f r o m two r e a c t o r v e s s e l w a t e r l e v e l c h a n n e l s . The o u t p u t s f r o m t h e r e a c t o r v e s s e l w a t e r l e v e l c h a n n e l s a r e c o n n e c t e d i n t o one t w o - o u t - o f - t w o l o g i c t r i p system. The D r y w e l l P r e s s u r e - H i g h I s o l a t i o n f u n c t i o n r e c e i v e s i n p u t f r o m t w o d r y w e l l p r e s s u r e c h a n n e l s . The o u t p u t s from t h e d r y w e l l pressure channels a r e connected i n t o one t w o - o u t - o f - t w o l o g i c t r i p system.

When e i t h e r I s o l a t i o n F u n c t i o n a c t u a t e s , t h e T I P d r i v e mechanisms w i l l w i t h d r a w t h e T I P s , i f i n s e r t e d , and c l o s e t h e T I P s y s t e m i s o l a t i o n b a l l v a l v e s when t h e T I P s a r e f u l l y w i t h d r a w n . The r e d u n d a n t T I P s y s t e m is o l a t i o n v a l v e s a r e manual s h e a r v a l v e s .

T I P System I s o l a t i o n F u n c t i o n s i s o l a t e t h e Group I U D ) T I P v a l v e s (is o l a t i on b a l l V a l v e s ) . I (continued) I PBAPS UNIT 2 B 3.3-144 R e v i s i o n No.

Pri ma ry Con t a i nment I sol a t i on Ins t rumenta t i on B 3.3.6.1 BASES APPLICABLE The i s o l a t i o n s i g n a l s generated by the primary containment SAFETY ANALYSES, i s o l a t i o n instrumentation a r e i m p l i c i t l y assumed in the LCO, a n d s a f e t y analyses of References 1 a n d 3 t o i n i t i a t e c l o s u r e APPLICABILITY of valves t o l i m i t o f f s i t e doses. Refer t o LCO 3.6.1.3, "Primary Containment I s o l a t i o n Valves (PCIVs) ," Applicable Safety Analyses Bases f o r more d e t a i l o f t h e s a f e t y analyses.

Primary containment i s o l a t i o n instrumentation s a t i s f i e s C r i t e r i o n 3 of the N R C Policy Statement. Certain instrumentation Functions a r e retained f o r o t h e r reasons a n d a r e described be1 ow i n t h e i ndi vi d u a l Functions di scussi o n .

The O P E R A B I L I T Y of t h e primary containment instrumentation i s dependent on t h e O P E R A B I L I T Y of t h e individual instrumentation channel Functions s p e c i f i e d i n Table 3.3.6.1-1. Each Function must have a required number of O P E R A B L E channels, with t h e i r s e t p o i n t s within the s p e c i f i e d A1 1 owabl e Val ues, where appropri a t e . A channel i s inoperable i f i t s actual t r i p s e t t i n g i s n o t within i t s requi red A1 1 owabl e Val ue. The actual setpoi n t i s cal i brated consi s t e n t with a p p l i cab1 e setpoi n t methodol ogy assumptions.

Allowable Values, where a p p l i c a b l e , a r e s p e c i f i e d f o r each Primary Containment I s o l a t i o n Function s p e c i f i e d in the Table. Trip s e t p o i n t s a r e s p e c i f i e d i n t h e s e t p o i n t c a l c u l a t i o n s . The t r i p s e t p o i n t s a r e s e l e c t e d t o ensure t h a t t h e s e t p o i n t s d o n o t exceed t h e Allowable Value between C H A N N E L C A L I B R A T I O N S . Operation with a t r i p s e t t i n g l e s s conservative t h a n t h e t r i p s e t p o i n t , b u t within i t s Allowable Value, i s acceptable. Trip s e t p o i n t s a r e those predetermined values o f o u t p u t a t which a n a c t i o n should take place. The s e t p o i n t s a r e compared t o t h e actual process parameter ( e . g . , r e a c t o r vessel water l e v e l ) , a n d when the measured o u t p u t value of the process parameter exceeds the s e t p o i n t , t h e associated device ( e . g . , t r i p u n i t ) changes s t a t e . The a n a l y t i c or design l i m i t s a r e derived from the l i m i t i n g values of the process parameters obtained from the s a f e t y a n a l y s i s or other appropriate documents. The Allowable Values a r e derived from the a n a l y t i c or design l i m i t s , corrected f o r c a l i b r a t i o n ,

process, a n d instrument e r r o r s . The t r i p s e t p o i n t s a r e determined from a n a l y t i c a l or design l i m i t s , corrected f o r c a l i b r a t i o n , process, a n d instrument e r r o r s , as well a s ,

i nstrument d r i f t . I n s e l e c t e d c a s e s , t h e A1 1 owabl e Val ues a n d t r i p s e t p o i n t s a r e determined by engineering judgement or h i s t o r i c a l l y accepted p r a c t i c e re1 a t i v e t o t h e intended function of t h e channel. The t r i p s e t p o i n t s determined i n t h i s manner provide adequate protection by assuring instrument a n d process u n c e r t a i n t i e s expected f o r t h e environments during t h e operating time of t h e associated channels a r e accounted f o r .

Certain Emergency Core Cooling Systems ( E C C S ) a n d R C I C valves ( e . g . , minimum flow) a l s o serve t h e d u a l function of automatic PCIVs. The s i g n a l s t h a t i s o l a t e t h e s e valves a r e a l s o associated with t h e automatic i n i t i a t i o n of t h e ECCS (continued)

P B A P S UNIT 2 B 3.3-145 Revision No.

Primary Conta inment Is o l a t ion In s t rumentat ion B 3.3.6.1 BASES APPLICABLE 6,b. Reactor Vessel Wate r Leve 1-Low ( L e v e l 3 ) (continued)

SAFETY ANALYSES, LCO, and The Reactor Vessel Water Level -Low ( L e v e l 3 ) A1 1owabl e APPLICABILITY Value was chosen t o be t h e same as t h e RPS Reactor Vessel Water Level -Low ( L e v e l 3 ) A l l o w a b l e Value (LCO 3 . 3 . 1 . 1 ) ,

s i n c e t h e c a p a b i l i t y t o c o o l t h e f u e l may be t h r e a t e n e d .

The Reactor Vessel Water Level -Low ( L e v e l 3 ) F u n c t i o n i s o n l y r e q u i r e d t o be OPERABLE i n MODES 3, 4, and 5 t o p r e v e n t t h i s p o t e n t i a l f l o w p a t h f r o m l o w e r i n g t h e r e a c t o r vessel l e v e l t o t h e t o p o f t h e f u e l . I n MODES 1 and 2, a n o t h e r i s o l a t i o n (i.e., Reactor P r e s s u r e - H i g h ) and a d m i n i s t r a t i v e c o n t r o l s ensure t h a t t h i s f l o w p a t h remains i s o l a t e d t o p r e v e n t unexpected l o s s o f i n v e n t o r y v i a t h i s f l o w p a t h .

T h i s F u n c t i o n i s 0 1 a t e s b o t h RHR shutdown c o o l i n g pump suction valves.

Feedwater R e c i r c u l a t i o n I s o l a t i o n 7.a. Reactor Pressure-Hiah The Reactor P r e s s u r e - H i g h F u n c t i o n i s p r o v i d e d t o i s o l a t e t h e feedwater r e c i r c u l a t i o n l i n e . T h i s i n t e r l o c k i s p r o v i d e d o n l y f o r equipment p r o t e c t i o n t o p r e v e n t an i n t e r s y s t e m LOCA s c e n a r i o , and c r e d i t f o r t h e i n t e r l o c k i s n o t assumed i n t h e a c c i d e n t o r t r a n s i e n t a n a l y s i s i n t h e UFSAR.

The Reactor P r e s s u r e - H i g h s i g n a l s a r e i n i t i a t e d f r o m f o u r t r a n s m i t t e r s t h a t a r e connected t o d i f f e r e n t t a p s on t h e RPV. Four channels o f Reactor P r e s s u r e - H i g h F u n c t i o n a r e a v a i l a b l e and a r e r e q u i r e d t o be OPERABLE t o ensure t h a t no s i n g l e i n s t r u m e n t f a i l u r e can p r e c l u d e t h e i s o l a t i o n f u n c t i o n . The F u n c t i o n i s o n l y r e q u i r e d t o be OPERABLE i n MODES 1 , 2, and 3 , s i n c e t h e s e a r e t h e o n l y MODES i n which t h e r e a c t o r can be p r e s s u r i z e d ; t h u s , equipment p r o t e c t i o n i s needed. The A l l o w a b l e Value was chosen t o be l o w enough t o p r o t e c t t h e system equipment f r o m o v e r p r e s s u r i z a t i o n .

T h i s F u n c t i o n is o l a t e s t h e f e e d w a t e r r e c i r c u l a t i o n Val ves.

T r a v e r s i n g I n c o r e Probe System I s o l a t i o n I 8.a. Reactor Vessel Water Level -Low. Level 3 I Low RPV w a t e r l e v e l i n d i c a t e s t h a t t h e c a p a b i l i t y t o c o o l t h e f u e l may be t h r e a t e n e d . The v a l v e s whose p e n e t r a t i o n s communicate w i t h t h e p r i m a r y containment a r e i s o l a t e d t o (continued) I PBAPS UNIT 2 B 3.3-159 R e v i s i o n No.

Primary Containment Isolation Instrumentation B 3.3.6.1 BASES APPLICABLE 8,a. Reactor Vessel Water Level -Low, Level 3 (continued)

SAFETY ANALYSES, LCO, a n d l i m i t the release of f i s s i o n products. The i s o l a t i o n of the APPLICABILITY primary containment on Level 3 supports actions t o ensure t h a t (continued) o f f s i t e dose l i m i t s of 10 CFR 100 are n o t exceeded. The Reactor Vessel Water Level -Low, Level 3 Function associated with i s o l a t i o n i s i m p l i c i t l y assumed in the FSAR analysis as these leakage paths are assumed t o be i s o l a t e d post LOCA.

Reactor Vessel Water Level-Low, Level 3 signals are i n i t i a t e d from level transmitters t h a t sense the difference between the pressure due t o a constant column of water (reference l e g ) and the pressure due t o the actual water level ( v a r i a b l e l e g ) in the vessel. Two channels of Reactor Vessel Water Level -Low, Level 3 Function are available a n d are required t o be OPERABLE t o ensure t h a t no s i n g l e instrument f a i l u r e can i n i t i a t e a n inadvertent i s o l a t i o n actuation. The i s o l a t i o n function i s ensured by the m a n u a l shear valve in each penetration.

The Reactor Vessel Water Level -Low, Level 3 A1 lowable Value was chosen t o be the same as the RPS Level 3 scram Allowable Value

( L C O 3.3.1.11, since i s o l a t i o n of these valves i s n o t c r i t i c a l t o orderly p l a n t shutdown.

This Function i s o l a t e s the Group IUD) T I P valves.

8 . b . Drywell Pressure-Hish High drywell pressure can i n d i c a t e a break in the RCPB inside the primary containment. The i s o l a t i o n of some of the primary containment i sol ation Val ves on high drywell pressure supports actions t o ensure t h a t o f f s i t e dose l i m i t s of 10 CFR 100 are n o t exceeded. The Drywell Pressure-High Function, associated with i s o l a t i o n of the primary containment, i s i m p l i c i t l y assumed in the FSAR accident analysis as these leakage paths are assumed t o be i s o l a t e d post LOCA.

High drywell pressure s i g n a l s are i n i t i a t e d from pressure t r a n s m i t t e r s t h a t sense the pressure in the drywell. Two channels of Drywell Pressure-High per Function are available a n d are required t o be OPERABLE t o ensure t h a t no single i nstrument f a i 1 ure can i ni t i a t e a n inadvertent actuation. The i s o l a t i o n function i s ensured by the manual shear valve in each penetration.

The allowable Value was selected t o be the same as the ECCS Drywell Pressure-High Allowable Value ( L C O 3.3.5.11, since t h i s may be i n d i c a t i v e o f a LOCA inside primary containment.

This Function i s o l a t e s the Group I U D ) T I P valves.

(conti nued 1 PBAPS UNIT 2 B 3.3-159a Revision No. I

P r i mary Con t a i nment Is o l a t ion I ns t rumen t a t ion B 3.3.6.1 BASES (continued)

ACT ION S The ACTIONS a r e m o d i f i e d by two Notes. Note 1 a l l o w s p e n e t r a t i o n f l o w p a t h ( s ) t o be u n i s o l a t e d i n t e r m i t t e n t l y under a d m i n i s t r a t i v e c o n t r o l s . These c o n t r o l s c o n s i s t o f s t a t i o n i n g a d e d i c a t e d o p e r a t o r a t t h e c o n t r o l s o f t h e v a l v e , who i s i n c o n t i n u o u s communication w i t h t h e c o n t r o l room. I n t h i s way, t h e p e n e t r a t i o n can be r a p i d l y i s o l a t e d when a need f o r p r i m a r y containment i s o l a t i o n i s i n d i c a t e d . Note 2 has been p r o v i d e d t o m o d i f y t h e ACTIONS r e l a t e d t o p r i m a r y containment i s o l a t i o n i n s t r u m e n t a t i o n channels. S e c t i o n 1.3, Completion Times, s p e c i f i e s t h a t once a C o n d i t i o n has been e n t e r e d , subsequent d i v i s i o n s , subsystems, components, o r v a r i a b l e s expressed i n t h e C o n d i t i o n , d i s c o v e r e d t o be i n o p e r a b l e o r n o t w i t h i n l i m i t s , w i l l n o t r e s u l t i n separate e n t r y i n t o t h e C o n d i t i o n .

S e c t i o n 1.3 a l s o s p e c i f i e s t h a t Required A c t i o n s o f t h e C o n d i t i o n c o n t i n u e t o a p p l y f o r each a d d i t i o n a l f a i l u r e , w i t h Completion Times based on i n i t i a l e n t r y i n t o t h e C o n d i t i o n .

However , t h e Requi r e d A c t i o n s f o r inoperabl e p r i m a r y containment i s o l a t i o n i n s t r u m e n t a t i o n channels p r o v i d e a p p r o p r i a t e compensatory measures f o r separate i n o p e r a b l e channels. As such, a Note has been p r o v i d e d t h a t a l l o w s separate C o n d i t i o n e n t r y f o r each i n o p e r a b l e p r i m a r y containment i s o l a t i o n i n s t r u m e n t a t i o n channel.

Because o f t h e d i v e r s i t y o f sensors a v a i l a b l e t o p r o v i d e i s o l a t i o n s i g n a l s and t h e redundancy o f t h e i s o l a t i o n design, an a l l o w a b l e o u t o f s e r v i c e t i m e o f 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months f o r Functions l . d , 2.a, and 2.b and 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months f o r F u n c t i o n s o t h e r than F u n c t i o n s l . d , L a , and 2.b has been shown t o be a c c e p t a b l e (Refs. 6 and 7 ) t o p e r m i t r e s t o r a t i o n o f any i n o p e r a b l e channel t o OPERABLE s t a t u s . T h i s o u t o f s e r v i c e time i s only acceptable provided the associated Function i s s t i 11 m a i n t a i n i n g isol a t i o n capabi 1it y ( r e f e r t o Requi r e d A c t i o n B . 1 Bases). I f t h e i n o p e r a b l e channel cannot be r e s t o r e d t o OPERABLE s t a t u s w i t h i n t h e a l l o w a b l e o u t o f s e r v i c e t i m e , t h e channel must be p l a c e d i n t h e t r i p p e d condi t i on p e r Requi r e d A c t i on A. 1. P1 a c i ng t h e inoperabl e channel i n t r i p would c o n s e r v a t i v e l y compensate f o r t h e i n o p e r a b i l i t y , r e s t o r e c a p a b i l i t y t o accommodate a s i n g l e f a i l u r e , and a l l o w o p e r a t i o n t o c o n t i n u e w i t h no f u r t h e r r e s t r i c t i o n s . Alternately, i f i t i s n o t desired t o place t h e channel i n t r i p (e.g., as i n t h e case where p l a c i n g t h e i n o p e r a b l e channel i n t r i p would r e s u l t i n an i s o l a t i o n ) ,

C o n d i t i o n C must be e n t e r e d and i t s Required A c t i o n taken.

PBAPS U N I T 2 B 3.3-160 R e v i s i o n No.

ECCS - O p e r a t i ng B 3.5.1 BASES APPLICABLE T h i s LCO h e l p s t o e n s u r e t h a t t h e f o l l o w i n g acceptance SAFETY ANALYSES c r i t e r i a f o r t h e ECCS, e s t a b l i s h e d by 10 CFR 50.46 ( R e f . 81, (continued) w i l l be met f o l l o w i n g a LOCA, assuming t h e w o r s t case s i n g l e a c t i v e component f a i l u r e i n t h e ECCS:

a. Maximum f u e l element c l a d d i n g t e m p e r a t u r e i s I 2200°F;

b. Maximum c l a d d i n g o x i d a t i o n i s I 0.17 t i m e s t h e t o t a l cladding thickness before oxidation; C. Maximum hydrogen g e n e r a t i o n f r o m a z i r c o n i u m w a t e r r e a c t i o n i s I 0.01 t i m e s t h e h y p o t h e t i c a l amount t h a t would be g e n e r a t e d i f a l l o f t h e m e t a l i n t h e c l a d d i n g surrounding the f u e l , excluding the cladding s u r r o u n d i n g t h e plenum volume, were t o r e a c t ;

d. The c o r e i s m a i n t a i n e d i n a c o o l a b l e geometry; and e, Adequate 1ong t e r m c o o l ing c a p a b i 1 it y is m a i n t a i n e d .

The l i m i t i n g s i n g l e f a i l u r e s a r e d i s c u s s e d i n Reference 7.

The r e m a i n i n g OPERABLE ECCS subsystems p r o v i d e t h e c a p a b i l i t y t o a d e q u a t e l y c o o l t h e c o r e and p r e v e n t e x c e s s i v e f u e l damage.

The ECCS s a t i s f y C r i t e r i o n 3 o f t h e NRC P o l i c y Statement.

LCO Each ECCS i n j e c t i o n / s p r a y subsystem and f i v e AOS v a l v e s a r e r e q u i r e d t o b e OPERABLE. The ECCS i n j e c t i o n / s p r a y subsystems a r e d e f i n e d as t h e two CS subsystems, t h e two LPCI subsystems, and one H P C I System. The l o w p r e s s u r e ECCS i n j e c t i o n / s p r a y subsystems a r e d e f i n e d as t h e two C S Subsystems and t h e two LPCI subsystems.

W i t h l e s s t h a n t h e r e q u i r e d number o f ECCS subsystems OPERABLE, t h e p o t e n t i a l e x i s t s t h a t d u r i n g a l i m i t i n g d e s i g n b a s i s LOCA c o n c u r r e n t w i t h t h e w o r s t case s i n g l e f a i l u r e ,

t h e l i m i t s s p e c i f i e d i n Reference 8 c o u l d be exceeded. A l l ECCS subsystems must t h e r e f o r e be OPERABLE t o s a t i s f y t h e s i n g l e f a i l u r e c r i t e r i o n r e q u i r e d by R e f e r e n c e 8.

A s n o t e d , LPCI subsystems may be c o n s i d e r e d OPERABLE d u r i n g I a l i g n m e n t and o p e r a t i o n f o r decay h e a t removal when b e l o w t h e a c t u a l RHR shutdown c o o l i n g i s o l a t i o n p r e s s u r e i n MODE 3 , i f c a p a b l e o f b e i n g m a n u a l l y r e a l i g n e d ( r e m o t e or l o c a l ) t o t h e (continued)

PBAPS U N I T 2 B 3.5-5 R e v i s i o n No.

B 3.5.1 BASES LCO LPCI mode and n o t o t h e r w i s e i n o p e r a b l e . A l i g n m e n t and (continued) o p e r a t i o n f o r decay h e a t removal i n c l u d e s when t h e r e q u i r e d RHR pump i s n o t o p e r a t i n g o r when t h e s y s t e m i s r e a l i g n e d f r o m o r t o t h e RHR shutdown c o o l i n g mode. T h i s a l l o w a n c e i s n e c e s s a r y s i n c e t h e RHR System may be r e q u i r e d t o o p e r a t e i n t h e shutdown c o o l i n g mode t o remove decay h e a t and s e n s i b l e h e a t f r o m t h e r e a c t o r . A t t h e s e l o w p r e s s u r e s and decay h e a t l e v e l s , a r e d u c e d complement o f ECCS subsystems s h o u l d provide the required core cooling, thereby allowing o p e r a t i o n o f RHR shutdown c o o l i n g when n e c e s s a r y .

APPLICABILITY A l l ECCS subsystems a r e r e q u i r e d t o be OPERABLE d u r i n g MODES 1, 2, and 3, when t h e r e i s c o n s i d e r a b l e e n e r g y i n t h e r e a c t o r c o r e and c o r e c o o l i n g w o u l d be r e q u i r e d t o p r e v e n t f u e l damage i n t h e e v e n t o f a b r e a k i n t h e p r i m a r y system p i p i n g . I n MODES 2 and 3, when r e a c t o r steam dome p r e s s u r e i s 5 150 p s i g , H P C I i s n o t r e q u i r e d t o be OPERABLE because t h e l o w p r e s s u r e ECCS subsystems can p r o v i d e s u f f i c i e n t f l o w b e l o w t h i s p r e s s u r e . I n MODES 2 and 3, when r e a c t o r steam dome p r e s s u r e i s 5 100 p s i g , ADS i s n o t r e q u i r e d t o be OPERABLE because t h e l o w p r e s s u r e ECCS subsystems can p r o v i d e s u f f i c i e n t f l o w b e l o w t h i s p r e s s u r e . ECCS r e q u i r e m e n t s f o r MODES 4 and 5 a r e s p e c i f i e d i n LCO 3.5.2, "ECCS-Shutdown. 'I ACTIONS A N o t e p r o h i b i t s t h e a p p l i c a t i o n o f LCO 3.0.4.b t o an i n o p e r a b l e H P C I subsystem. T h e r e i s an i n c r e a s e d r i s k a s s o c i a t e d w i t h e n t e r i n g a MODE o r o t h e r s p e c i f i e d c o n d i t i o n i n t h e A p p l i c a b i l i t y w i t h an i n o p e r a b l e H P C I subsystem and t h e p r o v i s i o n s o f LCO 3.0.4.b, w h i c h a l l o w e n t r y i n t o a MODE or other specified condition i n the Applicability with the LCO n o t met a f t e r p e r f o r m a n c e o f a r i s k assessment a d d r e s s i n g i n o p e r a b l e systems and components, s h o u l d n o t be a p p l i e d i n t h i s circumstance.

I f any one l o w p r e s s u r e ECCS i n j e c t i o n / s p r a y subsystem i s i n o p e r a b l e , o r i f one LPCI pump i n each subsystem i s i n o p e r a b l e , a l l i n o p e r a b l e subsystems must b e r e s t o r e d t o OPERABLE s t a t u s w i t h i n 7 days (e.g., i f one LPCI pump i n each subsystem i s i n o p e r a b l e , b o t h must be r e s t o r e d w i t h i n 7 d a y s ) . I n t h i s C o n d i t i o n , t h e r e m a i n i n g OPERABLE subsystems p r o v i d e adequate c o r e c o o l i n g d u r i n g a LOCA.

However, o v e r a l l ECCS r e l i a b i l i t y i s r e d u c e d , because a s i n g l e f a i l u r e i n one o f t h e r e m a i n i n g OPERABLE subsystems, c o n c u r r e n t w i t h a LOCA, may r e s u l t i n t h e ECCS n o t b e i n g a b l e t o p e r f o r m i t s i n t e n d e d s a f e t y f u n c t i o n . The 7 day C o m p l e t i o n Time i s based on a r e l i a b i l i t y s t u d y ( R e f . 9 )

t h a t e v a l u a t e d t h e i m p a c t on ECCS a v a i l a b i l i t y , assuming v a r i o u s components and subsystems were t a k e n o u t o f s e r v i c e .

The r e s u l t s were used t o c a l c u l a t e t h e a v e r a g e a v a i l a b i l i t y o f ECCS equipment needed t o m i t i g a t e t h e consequences o f a LOCA as a f u n c t i o n o f a l l o w e d o u t a g e t i m e s ( L e . , C o m p l e t i o n Times).

(continued 1 PBAPS U N I T 2 B 3.5-6 R e v i s i o n No.

ECCS-Operati ng B 3.5.1 BASES SURVEILLANCE REQUIRE~ENTS

( c o n t i nued SR 3.5.1.3 V e r i f i c a t i o n every 31 days t h a t ADS nitrogen supply header pressure i s 2 85 psig ensures adequate a i r pressure f o r r e l i a b l e ADS o p e r a t i o n . The accumulator on each ADS valve provides pneumatic pressure f o r valve a c t u a t i o n . The design pneumatic supply pressure requirements f o r t h e accumulator a r e such t h a t , following a f a i l u r e of t h e pneumatic supply t o t h e accumulator, a t l e a s t two valve a c t u a t i o n s can occur with t h e drywell a t 70% of design pressure (Ref. 1 0 ) . The E C C S s a f e t y a n a l y s i s assumes o n l y one a c t u a t i o n t o achieve t h e d e p r e s s u r i z a t i o n required f o r operation of t h e low pressure ECCS. This minimum required pressure o f 2 85 psig i s provided by t h e ADS instrument a i r supply. The 31 day Frequency takes i n t o consideration a d m i n i s t r a t i v e c o n t r o l s over operation of t h e a i r system a n d alarms f o r low a i r pressure.

SR 3.5.1.4 V e r i f i c a t i o n every 31 days t h a t t h e L P C I c r o s s t i e valve i s closed a n d power t o i t s operator i s disconnected ensures t h a t each L P C I subsystem remains independent a n d a f a i l u r e o f t h e flow p a t h in one subsystem w i l l n o t a f f e c t t h e flow p a t h of the other L P C I subsystem. Acceptable methods of removing power t o t h e operator include de-energizing breaker control power or racking o u t or removing t h e breaker. If t h e L P C I cross t i e valve i s open or power has n o t been removed from the valve o p e r a t o r , b o t h L P C I subsystems must be considered inoperable. The 31 day Frequency has been

( c o n t i nued PBAPS UNIT 2 B 3.5-11 Revision No.

ECCS-Shutdown B 3.5.2 BASES LCO A s n o t e d , one LPCI s u b s y s t e m may b e c o n s i d e r e d OPERABLE (continued) d u r i n g a l i g n m e n t and o p e r a t i o n f o r decay h e a t removal i f capable o f being manually r e a l i g n e d (remote o r l o c a l 1 t o t h e LPCI mode and i s n o t o t h e r w i s e i n o p e r a b l e . A l i g n m e n t and o p e r a t i o n f o r decay h e a t r e m o v a l i n c l u d e s when t h e r e q u i r e d RHR pump i s n o t o p e r a t i n g o r when t h e s y s t e m i s r e a l i g n e d f r o m o r t o t h e RHR shutdown c o o l i n g mode. T h i s a l l o w a n c e i s n e c e s s a r y s i n c e t h e RHR System may b e r e q u i r e d t o o p e r a t e i n t h e shutdown c o o l i n g mode t o remove d e c a y h e a t and s e n s i b l e h e a t f r o m t h e r e a c t o r . Because o f l o w p r e s s u r e and l o w t e m p e r a t u r e c o n d i t i o n s i n MODES 4 and 5, s u f f i c i e n t t i m e w i l l b e a v a i l a b l e t o m a n u a l l y a l i g n and i n i t i a t e LPCI subsystem o p e r a t i o n t o p r o v i d e c o r e c o o l i n g p r i o r t o p o s t u l a t e d f u e l uncovery.

APPLICABILITY OPERABILITY o f t h e l o w p r e s s u r e ECCS i n j e c t i o n / s p r a y subsystems i s r e q u i r e d i n MODES 4 and 5 t o e n s u r e a d e q u a t e c o o l a n t i n v e n t o r y and s u f f i c i e n t h e a t r e m o v a l c a p a b i l i t y f o r t h e i r r a d i a t e d f u e l i n t h e c o r e i n c a s e o f an i n a d v e r t e n t draindown o f t h e vessel. R e q u i r e m e n t s f o r ECCS OPERABILITY d u r i n g MODES 1, 2, and 3 a r e d i s c u s s e d i n t h e A p p l i c a b i l i t y s e c t i o n o f t h e Bases f o r LCO 3.5.1. ECCS subsystems a r e n o t r e q u i r e d t o b e OPERABLE d u r i n g MODE 5 w i t h t h e s p e n t f u e l s t o r a g e p o o l g a t e s removed, t h e w a t e r l e v e l m a i n t a i n e d a t 2 458 i n c h e s above r e a c t o r p r e s s u r e v e s s e l i n s t r u m e n t z e r o

( 2 0 f t 11 .inches above t h e RPV f l a n g e ) , and n o o p e r a t i o n s w i t h a p o t e n t i a l f o r d r a i n i n g t h e r e a c t o r v e s s e l (OPDRVs) i n progress. This provides s u f f i c i e n t c o o l a n t i n v e n t o r y t o a l l o w o p e r a t o r a c t i o n t o t e r m i n a t e t h e i n v e n t o r y loss p r i o r t o f u e l u n c o v e r y i n c a s e o f an i n a d v e r t e n t d r a i n d o w n .

The A u t o m a t i c D e p r e s s u r i z a t i o n System i s n o t r e q u i r e d t o b e OPERABLE d u r i n g MODES 4 and 5 because t h e RPV p r e s s u r e i s 5 100 p s i g , and t h e CS System and t h e LPCI subsystems c a n p r o v i d e c o r e c o o l i n g w i t h o u t any d e p r e s s u r i z a t i o n o f t h e p r i m a r y system.

The H i g h P r e s s u r e C o o l a n t I n j e c t i o n System i s n o t r e q u i r e d t o be OPERABLE d u r i n g MODES 4 and 5 s i n c e t h e l o w p r e s s u r e ECCS i n j e c t i o n / s p r a y subsystems can p r o v i d e s u f f i c i e n t f l o w t o the vessel.

ACTIONS A . 1 and B.1 I f any one r e q u i r e d l o w p r e s s u r e ECCS i n j e c t i o n h p r a y s u b s y s t e m i s i n o p e r a b l e , an i n o p e r a b l e s u b s y s t e m must b e r e s t o r e d t o OPERABLE s t a t u s i n 4 h o u r s . I n t h i s Condition, t h e r e m a i n i n g OPERABLE s u b s y s t e m can p r o v i d e s u f f i c i e n t v e s s e l f l o o d i n g c a p a b i l i t y t o r e c o v e r f r o m an i n a d v e r t e n t v e s s e l d r a i n d o w n . However, o v e r a l l s y s t e m r e l i a b i l i t y i s r e d u c e d b e c a u s e a s i n g l e f a i l u r e i n t h e r e m a i n i n g OPERABLE (continued)

PBAPS UNIT 2 B 3.5-19 R e v i s i o n No.

ECCS- Shutdown B 3.5.2 BASES SURVEILLANCE SR 3.5.2.1 a n d SR 3.5.7. 2 (continued)

REQUIRE~ENTS The 12 h o u r F r e q u e n c y o f t h e s e SRs was d e v e l o p e d c o n s i d e r i n g o p e r a t i n g experience r e l a t e d t o suppression pool water l e v e l and CST w a t e r l e v e l v a r i a t i o n s and i n s t r u m e n t d r i f t d u r i n g t h e a p p l i c a b l e MODES. F u r t h e r m o r e , t h e 12 h o u r F r e q u e n c y i s considered adequate i n view o f o t h e r i n d i c a t i o n s a v a i l a b l e i n t h e c o n t r o l room t o a l e r t t h e o p e r a t o r t o an abnormal s u p p r e s s i o n p o o l o r CST w a t e r l e v e l c o n d i t i o n .

SR 3. 5 . 2 . 3 . SR 3.52.5. a n d SR 3.5.2.6 The Bases p r o v i d e d f o r SR 3.5.1.1, SR 3 . 5 . 1 . 7 , and S R 3 . 5 . 1 . 1 0 a r e a p p l i c a b l e t o SR 3 . 5 . 2 . 3 , SR 3.5.2.5, and SR 3.5.2.6, respectively.

SR 3.5.2.4 V e r i f y i n g t h e c o r r e c t a l i g n m e n t for m a n u a l , power o p e r a t e d ,

and a u t o m a t i c v a l v e s i n t h e E C C S f l o w p a t h s p r o v i d e s a s s u r a n c e t h a t t h e p r o p e r f l o w p a t h s w i l l e x i s t f o r ECCS o p e r a t i o n . T h i s SR does n o t a p p l y t o v a l v e s t h a t a r e locked, sealed, o r otherwise secured i n p o s i t i o n , since t h e s e v a l v e s were v e r i f i e d t o be i n t h e c o r r e c t p o s i t i o n p r i o r t o locking, sealing, o r securing. A valve t h a t r e c e i v e s an i n i t i a t i o n s i g n a l i s a l l o w e d t o b e i n a nonaccident p o s i t i o n provided t h e v a l v e w i l l a u t o m a t i c a l l y r e p o s i t i o n i n t h e p r o p e r s t r o k e t i m e . T h i s SR does n o t r e q u i r e any t e s t i n g o r v a l v e m a n i p u l a t i o n ; r a t h e r , i t i n v o l v e s v e r i f i c a t i o n t h a t those valves capable o f p o t e n t i a l l y being mispositioned are i n the correct position.

T h i s SR does n o t a p p l y t o v a l v e s t h a t c a n n o t b e i n a d v e r t e n t l y m i s a l i g n e d , s u c h as c h e c k v a l v e s . The 3 1 day F r e q u e n c y i s a p p r o p r i a t e because t h e v a l v e s a r e o p e r a t e d u n d e r p r o c e d u r a l c o n t r o l and t h e p r o b a b i l i t y o f t h e i r b e i n g mispositioned d u r i n g t h i s time p e r i o d i s low.

( c o n t i nued 1 PBAPS U N I T 2 B 3.5-22 R e v i s i o n No.

ECCS-Shutdown B 3.5.2 BASES REFERENCES 1. NEDO-Z0566A, "General E l e c t r i c Company A n a l y t i c a l Model f o r L o s s - o f - C o o l a n t A c c i d e n t A n a l y s i s i n Accordance w i t h 10 CFR 50 Appendix K," September 1986.

PBAPS U N I T 2 B 3.5-23 R e v i s i o n No.

Primary Containment Air Lock B 3.6.1.2 BASES SURVEILLANCE SR 3.6.1.2.1 (continued)

R E Q U I RENENTS t e s t i n g . The periodic t e s t i n g requirements v e r i f y t h a t t h e a i r lock leakage does n o t exceed the allowed f r a c t i o n of the overall primary containment leakage r a t e . The Frequency i s required by the Primary Containment Leakage Rate Testing Program.

The SR has been modified by two Notes. Note 1 s t a t e s t h a t a n inoperable a i r lock door does n o t i n v a l i d a t e the previous successful performance of the o v e r a l l a i r lock leakage t e s t .

This i s considered reasonable since e i t h e r a i r lock door i s capable of providing a f i s s i o n product b a r r i e r i n the event of a DBA. Note 2 r e q u i r e s the r e s u l t s of a i r lock leakage t e s t s t o be evaluated a g a i n s t t h e acceptance c r i t e r i a of the Primary Containment Leakage Rate Testing Program, 5.5.12.

This ensures t h a t t h e a i r lock leakage i s properly accounted f o r in determining the combined Type B a n d C primary con t a i nmen t 1 ea kage .

SR 3.6.1.2.2 The a i r lock i n t e r l o c k mechanism i s designed t o prevent simultaneous opening of b o t h doors i n t h e a i r lock. Since b o t h t h e inner a n d outer doors of a n a i r lock a r e designed t o withstand t h e maximum expected post accident primary containment p r e s s u r e , c l o s u r e of e i t h e r door will support primary containment O P E R A B I L I T Y . Thus, t h e i n t e r l o c k f e a t u r e supports primary Containment O P E R A B I L I T Y while the a i r lock i s being used f o r personnel t r a n s i t i n a n d o u t of t h e containment. Periodic t e s t i n g of t h i s i n t e r l o c k demonstrates t h a t the i n t e r l o c k will function as designed a n d t h a t simultaneous inner a n d outer door opening will n o t i n a d v e r t e n t l y occur. Due t o t h e purely mechanical nature of t h i s i n t e r l o c k , a n d given t h a t the i n t e r l o c k mechanism i s n o t normally challenged when primary containment i s used f o r e n t r y a n d e x i t (procedures require s t r i c t adherence t o s i n g l e door opening), t h i s t e s t i s o n l y required t o be performed every 24 months. The 24 m o n t h Frequency i s based on the need t o perform t h i s Surveillance under the conditions t h a t apply during a p l a n t outage, a n d the p o t e n t i a l f o r l o s s of primary containment OPERBILITY i f t h e Surveillance were performed with the r e a c t o r a t power.

Operating experience has shown these components usually pass the S u r v e i l l a n c e when performed a t the 24 m o n t h Frequency.

The 24 m o n t h Frequency i s based on engineering judgment a n d i s considered adequate given t h a t t h e i n t e r l o c k i s n o t challenged during use o f the a i r l o c k .

(continued)

PBAPS UNIT 2 B 3.6-12 Revision No.

PCIVS B 3.6.1.3 BASES ACTIONS A . 1 and A.2 (continued) a l l o w s a p e r i o d o f t i m e t o r e s t o r e t h e MSIVs t o OPERABLE status given the f a c t that MSIV closure w i l l result i n i s o l a t i o n o f t h e m a i n steam l i n e ( s ) and a p o t e n t i a l f o r p l a n t shutdown.

F o r a f f e c t e d p e n e t r a t i o n s t h a t have been i s o l a t e d i n accordance w i t h Required A c t i o n A.1, t h e a f f e c t e d p e n e t r a t i o n f l o w p a t h ( s ) m u s t b e v e r i f i e d t o b e i s o l a t e d on a p e r i o d i c basis. This i s necessary t o ensure t h a t primary containment penetrations required t o be i s o l a t e d f o l l o w i n g an a c c i d e n t , and no l o n g e r c a p a b l e o f b e i n g a u t o m a t i c a l l y i s o l a t e d , w i l l b e i n t h e i s o l a t i o n p o s i t i o n s h o u l d an e v e n t o c c u r . T h i s R e q u i r e d A c t i o n does n o t r e q u i r e any t e s t i n g o r device manipulation. Rather, i t i n v o l v e s v e r i f i c a t i o n t h a t t h o s e d e v i c e s o u t s i d e c o n t a i n m e n t and c a p a b l e o f p o t e n t i a l l y b e i n g m i s p o s i t i o n e d a r e i n t h e c o r r e c t p o s i t i o n . The C o m p l e t i o n Time o f " o n c e p e r 3 1 d a y s f o r i s o l a t i o n d e v i c e s o u t s i d e p r i m a r y c o n t a i n m e n t " i s a p p r o p r i a t e because t h e d e v i c e s a r e o p e r a t e d u n d e r a d m i n i s t r a t i v e c o n t r o l s and t h e p r o b a b i l i t y o f t h e i r misalignment i s low. For t h e devices i n s i d e primary containment, t h e time p e r i o d s p e c i f i e d " p r i o r t o e n t e r i n g MODE 2 o r 3 f r o m MODE 4, i f p r i m a r y c o n t a i n m e n t was d e - i n e r t e d w h i l e i n MODE 4, i f n o t p e r f o r m e d w i t h i n t h e p r e v i o u s 92 d a y s " i s b a s e d on e n g i n e e r i n g j u d g m e n t and i s considered reasonable i n view o f t h e i n a c c e s s i b i l i t y o f t h e d e v i c e s and o t h e r a d m i n i s t r a t i v e c o n t r o l s e n s u r i n g t h a t d e v i c e m i s a l i g n m e n t i s an u n l i k e l y p o s s i b i l i t y .

C o n d i t i o n A i s m o d i f i e d by a Note i n d i c a t i n g t h a t t h i s Condition i s o n l y a p p l i c a b l e t o those p e n e t r a t i o n f l o w paths w i t h t w o PCIVs. F o r p e n e t r a t i o n f l o w p a t h s w i t h one P C I V ,

Condition C provides t h e appropriate Required Actions.

R e q u i r e d A c t i o n A.2 i s m o d i f i e d b y t w o N o t e s . N o t e 1 a p p l i e s I t o i s o l a t i o n d e v i c e s l o c a t e d i n h i g h r a d i a t i o n a r e a s , and a l l o w s them t o b e v e r i f i e d b y u s e o f a d m i n i s t r a t i v e means.

A l l o w i n g v e r i f i c a t i o n b y a d m i n i s t r a t i v e means i s c o n s i d e r e d a c c e p t a b l e , s i n c e access t o t h e s e areas i s t y p i c a l l y r e s t r i c t e d . Note 2 a p p l i e s t o i s o l a t i o n devices t h a t a r e l o c k e d , s e a l e d , o r o t h e r w i s e s e c u r e d i n p o s i t i o n and a l l o w s t h e s e d e v i c e s t o be v e r i f i e d c l o s e d by use o f a d m i n i s t r a t i v e means. A l l o w i n g v e r i f i c a t i o n b y a d m i n i s t r a t i v e means i s considered acceptable, s i n c e t h e f u n c t i o n o f l o c k i n g ,

s e a l i n g , o r s e c u r i n g components i s t o e n s u r e t h a t t h e s e devices a r e not i n a d v e r t e n t l y repositioned. Therefore, t h e p r o b a b i l i t y o f m i s a l i g n m e n t , o n c e t h e y h a v e been v e r i f i e d t o be i n t h e p r o p e r p o s i t i o n , i s low, l c o n t i nued)

PBAPS U N I T 2 B 3.6-20 R e v i s i o n No.

PCIVs B 3.6.1.3 BASES ACTIONS -B.1 (conti nued 1 With one o r more penetration flow paths with two PCIVs inoperable except due t o MSIV leakage n o t within l i m i t ,

e i t h e r the inoperable PCIVs must be restored t o O P E R A B L E s t a t u s or the affected penetration flow p a t h must be i s o l a t e d within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months . The method of i s o l a t i o n must include the use of a t l e a s t one i s o l a t i o n b a r r i e r t h a t cannot be adversely affected by a s i n g l e a c t i v e f a i l u r e .

Isolation b a r r i e r s t h a t meet t h i s c r i t e r i o n a r e a closed a n d de-activated automatic valve, a closed manual valve, a n d a blind flange. The 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months Completion Time i s consistent with the ACTIONS of LCO 3.6.1.1.

Condition B i s modified by a Note indicating t h i s Condition i s o n l y applicable t o penetration flow paths with two PCIVs.

For penetration flow paths with one P C I V , Condition C provides the appropri a t e Requi red Actions.

C . l a n d C.2 With one or more penetration flow paths with one PCIV i noperabl e , the i noperabl e Val ve must be restored t o OPERABLE s t a t u s or the affected penetration flow p a t h must be isolated. The method of isolation must include the use of a t l e a s t one isolation barrier t h a t cannot be adversely affected by a single active f a i l u r e . Isolation barriers t h a t meet t h i s c r i t e r i o n are a closed a n d de-activated automatic valve, a closed manual valve, a n d a blind flange.

A check valve may n o t be used t o i s o l a t e the affected penetration. The Completion Time o f 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months i s reasonable considering the time required t o i s o l a t e the penetration and the r e l a t i v e importance of supporting primary containment OPERABILITY during MODES 1, 2 , and 3. The Completion Time of 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months for penetrations with a closed system i s reasonabl e considering the re1 ative stabi 1 i t y of the closed system (hence, r e l i a b i l i t y ) t o act as a penetration isolation boundary a n d the relative importance of supporting primary containment OPERABILITY during MODES 1 , 2 , a n d 3.

The closed system must also meet the requirements o f Reference 6. The Completion Time of 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months i s also reasonable considering the instrument a n d the small pipe diameter of penetration (hence, r e l i a b i l i t y ) t o act as a penetration isolation boundary a n d the small pipe diameter of the affected penetrations.

For affected penetrations t h a t have been i s o l a t e d in accordance with Required Action C . l , the affected penetration flow path(s1 must be v e r i f i e d t o be i s o l a t e d on (conti nued 1 PBAPS UNIT 2 B 3.6-21 Revision No.

PCIVS B 3.6.1.3 BASES ACTIONS C . l and C.2 (continued) a p e r i o d i c basis. This i s necessary t o ensure t h a t primary c o n t a i n m e n t p e n e t r a t i o n s r e q u i r e d t o b e is o l a t e d f o l l owi n g an a c c i d e n t , and n o l o n g e r c a p a b l e o f b e i n g a u t o m a t i c a l l y i s o l a t e d , w i l l b e i n t h e i s o l a t i o n p o s i t i o n s h o u l d an e v e n t o c c u r . T h i s R e q u i r e d A c t i o n does n o t r e q u i r e any t e s t i n g o r V a l v e mani p u l a t i o n . R a t h e r , it in v o l ves v e r i f i c a t i on, t h r o u g h a s y s t e m walkdown, t h a t t h o s e v a l v e s o u t s i d e c o n t a i n m e n t and c a p a b l e o f p o t e n t i a l l y b e i n g m i s p o s i t i o n e d a r e i n t h e c o r r e c t p o s i t i o n . The C o m p l e t i o n Time o f "once p e r 3 1 days f o r i s o l a t i o n d e v i c e s o u t s i d e p r i m a r y containment" i s a p p r o p r i a t e because t h e v a l v e s a r e o p e r a t e d u n d e r a d m i n i s t r a t i v e c o n t r o l s and t h e p r o b a b i l i t y o f t h e i r m i s a l i g n m e n t i s l o w . For t h e v a l v e s i n s i d e p r i m a r y containment, t h e time p e r i o d s p e c i f i e d " p r i o r t o e n t e r i n g MODE 2 o r 3 f r o m MODE 4, i f p r i m a r y c o n t a i n m e n t was d e - i n e r t e d w h i l e i n MODE 4, i f n o t p e r f o r m e d w i t h i n t h e p r e v i o u s 92 d a y s " i s based on e n g i n e e r i n g j u d g m e n t and i s considered reasonable i n view o f t h e i n a c c e s s i b i l i t y o f t h e v a l v e s and o t h e r a d m i n i s t r a t i v e c o n t r o l s e n s u r i n g t h a t v a l v e m i s a l ignment is an u n l ik e l y p o s s i b i 1 it y .

C o n d i t i o n C i s m o d i f i e d by a Note i n d i c a t i n g t h a t t h i s Condition i s o n l y a p p l i c a b l e t o p e n e t r a t i o n f l o w paths w i t h o n l y one P C I V . F o r p e n e t r a t i o n f l o w p a t h s w i t h t w o PCIVs, C o n d i t i o n s A and B p r o v i d e t h e a p p r o p r i a t e R e q u i r e d A c t i o n s .

R e q u i r e d A c t i o n C.2 i s m o d i f i e d b y two N o t e s . N o t e 1 a p p l i e s 1 t o v a l v e s and b l i n d f l a n g e s l o c a t e d i n h i g h r a d i a t i o n a r e a s and a l l o w s them t o b e v e r i f i e d b y u s e o f a d m i n i s t r a t i v e means. A l l o w i n g v e r i f i c a t i o n b y a d m i n i s t r a t i v e means i s considered acceptable, s i n c e access t o these areas i s typically restricted. Note 2 a p p l i e s t o i s o l a t i o n d e v i c e s t h a t a r e l o c k e d , s e a l e d , o r o t h e r w i s e s e c u r e d i n p o s i t i o n and a l l o w s t h e s e d e v i c e s t o be v e r i f i e d c l o s e d b y u s e o f a d m i n i s t r a t i v e means. A l l o w i n g v e r i f i c a t i o n b y a d m i n i s t r a t i v e means i s c o n s i d e r e d a c c e p t a b l e , s i n c e t h e f u n c t i o n o f l o c k i n g , s e a l i n g , o r s e c u r i n g components i s t o ensure t h a t these devices a r e n o t i n a d v e r t e n t l y r e p o s i t i o n e d .

Therefore, t h e p r o b a b i l i t y o f misalignment o f these valves, once t h e y have been v e r i f i e d t o b e i n t h e p r o p e r p o s i t i o n , i s low.

D.l W i t h any M S I V l e a k a g e r a t e n o t w i t h i n l i m i t , t h e a s s u m p t i o n s o f t h e s a f e t y a n a l y s i s a r e n o t met. T h e r e f o r e , t h e leakage m u s t be r e s t o r e d t o w i t h i n l i m i t w i t h i n 8 h o u r s .

R e s t o r a t i o n can be accomplished by i s o l a t i n g t h e p e n e t r a t i o n t h a t c a u s e d t h e l i m i t t o b e exceeded b y u s e o f one c l o s e d and d e - a c t i v a t e d a u t o m a t i c v a l v e , c l o s e d manual v a l v e , o r b l i n d f l a n g e . When a p e n e t r a t i o n i s i s o l a t e d , t h e l e a k a g e

( c o n t i nued PBAPS UNIT 2 B 3.6-22 R e v i s i o n No.

PCIVs B 3.6.1.3 BASES SURVEILLANCE SR 3.6.1.3.3 ( c o n t i nued 1 REQUIREMENTS valves a r e capable o f c l o s i n g i n t h e environment f o l l o w i n g a LOCA. T h e r e f o r e , t h e s e v a l v e s a r e a l l o w e d t o be open f o r l i m i t e d p e r i o d s o f t i m e . The 3 1 day F r e q u e n c y i s c o n s i s t e n t w i t h o t h e r P C I V r e q u i r e m e n t s d i s c u s s e d i n SR 3.6.1.3.4.

SR 3.6.1.3. 4 T h i s SR v e r i f i e s t h a t e a c h p r i m a r y c o n t a i n m e n t i s o l a t i o n manual v a l v e and b l i n d f l a n g e t h a t i s l o c a t e d o u t s i d e p r i m a r y c o n t a i n m e n t and i s n o t l o c k e d , s e a l e d , o r o t h e r w i s e s e c u r e d and i s r e q u i r e d t o b e c l o s e d d u r i n g a c c i d e n t c o n d i t i o n s i s c l o s e d . The SR h e l p s t o e n s u r e t h a t p o s t a c c i d e n t l e a k a g e o f r a d i o a c t i v e f l u i d s o r gases o u t s i d e t h e primary containment boundary i s w i t h i n design l i m i t s .

T h i s SR does n o t r e q u i r e any t e s t i n g o r v a l v e m a n i p u l a t i o n .

R a t h e r , i t i n v o l v e s v e r i f i c a t i o n t h a t t h o s e PCIVs o u t s i d e p r i m a r y c o n t a i n m e n t , and c a p a b l e o f b e i n g m i s p o s i t i o n e d , a r e i n t h e c o r r e c t p o s i t i o n . Since v e r i f i c a t i o n o f valve p o s i t i o n f o r PCIVs o u t s i d e p r i m a r y . c o n t a i n m e n t i s r e l a t i v e l y e a s y , t h e 3 1 day F r e q u e n c y was chosen t o p r o v i d e added a s s u r a n c e t h a t t h e PCIVs a r e i n t h e c o r r e c t p o s i t i o n s . T h i s S R does n o t a p p l y t o v a l v e s t h a t a r e l o c k e d , s e a l e d , o r otherwise secured i n t h e closed p o s i t i o n , s i n c e these valves w e r e v e r i f i e d t o b e i n t h e c o r r e c t p o s i t i o n upon l o c k i n g ,

sealing, or securing.

T h r e e N o t e s have b e e n added t o t h i s SR. The f i r s t N o t e a l l o w s v a l v e s and b l i n d f l a n g e s l o c a t e d i n h i g h r a d i a t i o n a r e a s t o be v e r i f i e d by u s e o f a d m i n i s t r a t i v e c o n t r o l s .

A l l o w i n g v e r i f i c a t i o n by a d m i n i s t r a t i v e c o n t r o l s i s considered acceptable s i n c e t h e primary containment i s i n e r t e d and a c c e s s t o t h e s e a r e a s i s t y p i c a l l y r e s t r i c t e d d u r i n g MODES 1, 2 , and 3 f o r ALARA r e a s o n s . T h e r e f o r e , t h e p r o b a b i l i t y o f m i s a l i g n m e n t o f t h e s e PCIVs, once t h e y h a v e been v e r i f i e d t o b e i n t h e p r o p e r p o s i t i o n , i s l o w . A second N o t e has been i n c l u d e d t o c l a r i f y t h a t PCIVs t h a t a r e open u n d e r a d m i n i s t r a t i v e c o n t r o l s a r e n o t r e q u i r e d t o meet t h e SR d u r i n g t h e t i m e t h a t t h e PCIVs a r e open. A t h i r d N o t e s t a t e s t h a t p e r f o r m a n c e o f t h e SR i s n o t r e q u i r e d f o r t e s t taps w i t h a diameter 5 1 inch. It i s t h e i n t e n t t h a t t h i s SR must s t i l l b e m e t , b u t a c t u a l p e r f o r m a n c e i s n o t r e q u i r e d f o r t e s t t a p s w i t h a d i a m e t e r S 1 i n c h . The N o t e 3 allowance i s c o n s i s t e n t w i t h t h e o r i g i n a l p l a n t l i c e n s i n g basis (continued1 PBAPS UNIT 2 B 3.6-25 R e v i s i o n No.

PCIVs B 3.6.1.3 BASES SURVEILLANCE SR 3.6.1.3.5.

REQUIREMENTS (continued) T h i s SR v e r i f i e s t h a t e a c h p r i m a r y c o n t a i n m e n t manual i s o l a t i o n v a l v e and b l i n d f l a n g e t h a t i s l o c a t e d i n s i d e p r i m a r y c o n t a i n m e n t and n o t l o c k e d , s e a l e d , o r o t h e r w i s e s e c u r e d and i s r e q u i r e d t o b e c l o s e d d u r i n g a c c i d e n t c o n d i t i o n s i s c l o s e d . The SR h e l p s t o e n s u r e t h a t p o s t I

a c c i d e n t l e a k a g e o f r a d i o a c t i v e f l u i d s o r gases o u t s i d e t h e p r i m a r y c o n t a i n m e n t boundary i s w i t h i n d e s i g n l i m i t s . For PCIVs i n s i d e p r i m a r y c o n t a i n m e n t , t h e F r e q u e n c y d e f i n e d as

" p r i o r t o e n t e r i n g MODE 2 o r 3 f r o m MODE 4 i f p r i m a r y c o n t a i n m e n t was d e - i n e r t e d w h i l e i n MODE 4, i f n o t p e r f o r m e d w i t h i n t h e p r e v i o u s 92 d a y s " i s a p p r o p r i a t e s i n c e t h e s e PCIVs a r e o p e r a t e d u n d e r a d m i n i s t r a t i v e c o n t r o l s and t h e p r o b a b i l i t y o f t h e i r m i s a l i g n m e n t i s l o w . T h i s SR does n o t a p p l y t o v a l v e s t h a t a r e locked, sealed, or o t h e r w i s e s e c u r e d i n t h e c l o s e d p o s i t i o n , s i n c e t h e s e v a l v e s were v e r i f i e d t o b e i n t h e c o r r e c t p o s i t i o n upon l o c k i n g ,

sealing, o r securing.

Two N o t e s have been added t o t h i s SR. The f i r s t N o t e a l l o w s v a l v e s and b l i n d f l a n g e s l o c a t e d i n h i g h r a d i a t i o n a r e a s t o be v e r i f i e d by use o f a d m i n i s t r a t i v e c o n t r o l s . A l l o w i n g v e r i f i c a t i o n by a d m i n i s t r a t i v e c o n t r o l s i s considered a c c e p t a b l e s i n c e t h e p r i m a r y c o n t a i n m e n t i s i n e r t e d and access t o t h e s e a r e a s i s t y p i c a l l y r e s t r i c t e d d u r i n g MODES I , 2, and 3 f o r ALARA r e a s o n s . T h e r e f o r e , t h e p r o b a b i l i t y o f m i s a l i g n m e n t o f t h e s e PCIVs, once t h e y have been v e r i f i e d t o b e i n t h e i r p r o p e r p o s i t i o n , i s l o w . A second N o t e has b e e n i n c l u d e d t o c l a r i f y t h a t PCIVs t h a t a r e open u n d e r a d m i n i s t r a t i v e c o n t r o l s a r e n o t r e q u i r e d t o meet t h e SR d u r i n g t h e t i m e t h a t t h e PCIVs a r e open.

The t r a v e r s i n g i n c o r e p r o b e ( T I P ) s h e a r i s o l a t i o n v a l v e s a r e actuated by e x p l o s i v e charges. S u r v e i l l a n c e o f e x p l o s i v e charge c o n t i n u i t y p r o v i d e s assurance t h a t TIP valves w i l l a c t u a t e when r e q u i r e d . O t h e r a d m i n i s t r a t i v e c o n t r o l s , s u c h as t h o s e t h a t l i m i t t h e s h e l f l i f e o f t h e e x p l o s i v e charges, m u s t b e f o l l o w e d . The 3 1 day F r e q u e n c y i s b a s e d on o p e r a t i n g e x p e r i e n c e t h a t has d e m o n s t r a t e d t h e r e l i a b i l i t y o f t h e explosive charge c o n t i n u i t y .

SR 3.6. 1 . 3 . 7 V e r i f y i n g t h e c o r r e c t a l i g n m e n t f o r e a c h manual v a l v e i n t h e S G I G System r e q u i r e d f l o w p a t h s p r o v i d e s a s s u r a n c e t h a t t h e p r o p e r f l o w p a t h s e x i s t f o r s y s t e m o p e r a t i o n . T h i s SR does n o t a p p l y t o valves t h a t are locked o r otherwise secured i n PBAPS UNIT 2 B 3.6-26 R e v i s i o n No.

PCIVS B 3.6.1.3 BASES SURVEIL~ANCE SR 3.6.1 .3.7 (continued)

REQUIREMENTS p o s i t i o n , s i n c e t h e s e v a l v e s were v e r i f i e d t o b e i n t h e c o r r e c t p o s i t i o n p r i o r t o l o c k i n g o r s e c u r i n g . T h i s SR does n o t r e q u i r e any t e s t i n g o r v a l v e m a n i p u l a t i o n ; r a t h e r , i t i n v o l v e s v e r i f i c a t i o n t h a t those valves capable o f being m i s p o s i t i o n e d a r e i n t h e c o r r e c t p o s i t i o n . T h i s SR does n o t apply t o valves t h a t cannot be i n a d v e r t e n t l y misaligned, s u c h as c h e c k v a l v e s . The 3 1 day F r e q u e n c y i s based on e n g i n e e r i n g judgment, i s c o n s i s t e n t w i t h t h e procedural c o n t r o l s g o v e r n i n g v a l v e o p e r a t i o n , and e n s u r e s c o r r e c t valve positions.

SR 3.6.1.3.8 V e r i f y i n g t h e i s o l a t i o n t i m e o f e a c h power o p e r a t e d automatic PCIV i s w i t h i n l i m i t s i s r e q u i r e d t o demonstrate I OPERABILITY. MSIVs may be e x c l u d e d f r o m t h i s SR s i n c e M S I V f u l l c l o s u r e i s o l a t i o n t i m e i s d e m o n s t r a t e d b y SR 3 . 6 . 1 . 3 . 9 .

The i s o l a t i o n t i m e t e s t e n s u r e s t h a t t h e v a l v e w i l l i s o l a t e i n a t i m e p e r i o d l e s s t h a n o r e q u a l t o t h a t assumed i n the, s a f e t y a n a l y s e s . The i s o l a t i o n t i m e i s i n a c c o r d a n c e w i t h Reference 2 o r t h e requirements o f t h e I n s e r v i c e T e s t i n g Program w h i c h e v e r i s more c o n s e r v a t i v e . The F r e q u e n c y o f t h i s SR i s i n a c c o r d a n c e w i t h t h e r e q u i r e m e n t s o f t h e I n s e r v i c e T e s t i n g Program.

V e r i f y i n g t h a t t h e i s o l a t i o n t i m e o f each M S I V i s w i t h i n t h e s p e c i f i e d l i m i t s i s r e q u i r e d t o d e m o n s t r a t e OPERABILITY.

The i s o l a t i o n t i m e t e s t e n s u r e s t h a t t h e M S I V w i l l i s o l a t e i n a t i m e p e r i o d t h a t does n o t exceed t h e t i m e s assumed i n t h e DBA a n a l y s e s . T h i s e n s u r e s t h a t t h e c a l c u l a t e d r a d i o l o g i c a l consequences o f t h e s e e v e n t s r e m a i n w i t h i n 1 0 CFR 100 l i m i t s . The F r e q u e n c y o f t h i s SR i s i n accordance w i t h t h e requirements o f t h e I n s e r v i c e T e s t i n g Program.

SR 3.6.1.3.10 A u t o m a t i c PCIVs c l o s e on a p r i m a r y c o n t a i n m e n t i s o l a t i o n s i g n a l t o prevent leakage o f r a d i o a c t i v e m a t e r i a l from p r i m a r y c o n t a i n m e n t f o l l o w i n g a DBA. T h i s SR e n s u r e s t h a t each a u t o m a t i c P C I V w i l l a c t u a t e t o i t s i s o l a t i o n p o s i t i o n on a p r i m a r y c o n t a i n m e n t i s o l a t i o n s i g n a l . The LOGIC SYSTEM (continuedl PBAPS UNIT 2 B 3.6-27 R e v i s i o n No.

PCIVS B 3.6.1.3 BASES SURVEILLA~CE SR 3.6.1.3.16 REQUIREMENTS (continued) The i n f l a t a b l e s e a l o f each 6 i n c h and 18 i n c h p r i m a r y c o n t a i n m e n t p u r g e v a l v e and each 18 i n c h p r i m a r y c o n t a i n m e n t e x h a u s t v a l v e must be r e p l a c e d e v e r y 96 months. T h i s w i l l a l l o w t h e o p p o r t u n i t y f o r replacement b e f o r e gross leakage f a i 1u r e o c c u r s .

REFERENCES 1. UFSAR, C h a p t e r 14.

2. UFSAR, T a b l e 7.3.1.

3. 10 CFR 5 0 , Appendix J , O p t i o n B.

4. UFSAR, T a b l e 7.3.1, N o t e 17.

5. UFSAR, T a b l e 5 . 2 . 2 .

6. UFSAR, T a b l e 7 . 3 . 1 , Note 14.

PBAPS U N I T 2 B 3.6-30 Amendment No.

Secondary Containment B 3.6.4.1 BASES (continued)

SURVEILLANCE SR 3.6.4.1.1 and SR 3.6.4.1.2 REQUIREME~TS V e r i f y i n g t h a t secondary c o n t a i n m e n t equipment h a t c h e s and one access door i n each access o p e n i n g a r e c l o s e d ensures t h a t t h e i n f i l t r a t i o n o f o u t s i d e a i r o f such a magnitude as t o p r e v e n t m a i n t a i n i n g t h e d e s i r e d n e g a t i v e p r e s s u r e does n o t o c c u r . V e r i f y i n g t h a t a l l such o p e n i n g s a r e c l o s e d p r o v i d e s adequate assurance t h a t e x f i l t r a t i o n f r o m t h e secondary c o n t a i n m e n t w i l l n o t o c c u r . I n t h i s application, t h e t e r m " s e a l e d " has no c o n n o t a t i o n o f l e a k t i g h t n e s s .

M a i n t a i n i n g secondary c o n t a i n m e n t OPERABILITY r e q u i r e s v e r i f y i n g one door i n t h e access o p e n i n g i s c l o s e d . An access o p e n i n g c o n t a i n s one i n n e r and one o u t e r d o o r . In some cases, secondary c o n t a i n m e n t access openings a r e s h a r e d such t h a t a secondary c o n t a i n m e n t b a r r i e r may have m u l t i p l e i n n e r o r m u l t i p l e o u t e r d o o r s . The i n t e n t i s t o n o t b r e a c h secondary c o n t a i n m e n t a t any t i m e when secondary c o n t a i n m e n t i s r e q u i r e d . T h i s i s a c h i e v e d by m a i n t a i n i n g t h e i n n e r o r o u t e r p o r t i o n o f t h e b a r r i e r c l o s e d a t a l l t i m e s . However, a l l secondary c o n t a i n m e n t access d o o r s a r e n o r m a l l y k e p t c l o s e d , e x c e p t when t h e access o p e n i n g i s b e i n g used f o r e n t r y and e x i t o r when maintenance i s b e i n g p e r f o r m e d on an access opening. The 3 1 day Frequency f o r t h e s e SRs has been shown t o be adequate, based on o p e r a t i n g e x p e r i e n c e , and i s c o n s i d e r e d adequate i n v i e w o f t h e o t h e r i n d i c a t i o n s o f d o o r and h a t c h s t a t u s t h a t a r e a v a i l a b l e t o t h e o p e r a t o r .

SR 3.6.4.1.3 and SR 3.6.4.1.4 The SGT System e x h a u s t s t h e secondary c o n t a i n m e n t atmosphere t o t h e e n v i r o n m e n t t h r o u g h a p p r o p r i a t e t r e a t m e n t equipment.

Each SGT subsystem i s d e s i g n e d t o draw down p r e s s u r e i n t h e secondary c o n t a i n m e n t t o 2 0.25 i n c h e s o f vacuum w a t e r gauge i n 2 120 seconds and m a i n t a i n p r e s s u r e i n t h e secondary c o n t a i n m e n t a t 2 0.25 i n c h e s o f vacuum w a t e r gauge f o r 1 h o u r a t a f l o w r a t e 2 10,500 cfm. To e n s u r e t h a t a l l f i s s i o n p r o d u c t s r e l e a s e d t o t h e secondary c o n t a i n m e n t a r e t r e a t e d ,

SR 3.6.4.1.3 and SR 3.6.4.1.4 v e r i f y t h a t a p r e s s u r e i n t h e secondary c o n t a i n m e n t t h a t i s l e s s t h a n t h e l o w e s t p o s t u l a t e d p r e s s u r e e x t e r n a l t o t h e secondary c o n t a i nment boundary can r a p i d l y be e s t a b l i s h e d and m a i n t a i n e d . When t h e SGT System i s o p e r a t i n g as designed, t h e e s t a b l i s h m e n t and maintenance o f secondary c o n t a i n m e n t p r e s s u r e c a n n o t be accomplished i f t h e secondary c o n t a i n m e n t boundary i s n o t i n t a c t .

E s t a b l i s h m e n t o f t h i s p r e s s u r e i s c o n f i r m e d by SR 3.6.4.1.3 w h i c h demonstrates t h a t t h e secondary c o n t a i n m e n t can be drawn down t o 2 0.25 i n c h e s o f vacuum w a t e r gauge i n 5 120

( c o n t i nued 1 PBAPS UNIT 2 B 3.6-76 R e v i s i o n No.

Secondary Containment B 3.6.4.1 BASES SUR~EILLAN~E SR 3.6.4.1.3 and SR 3.6.4.1.4 (continued)

REQUIREMENTS seconds u s i n g one SGT subsystem. SR 3.6.4.1.4 demonstrates t h a t t h e p r e s s u r e i n t h e secondary c o n t a i n m e n t can be m a i n t a i n e d 2 0.25 i n c h e s o f vacuum w a t e r gauge f o r 1 h o u r u s i n g one SGT subsystem a t a f l o w r a t e I 10,500 cfm. The 1 h o u r t e s t p e r i o d a l l o w s secondary c o n t a i n m e n t t o be i n t h e r m a l e q u i 1 ib r i u m a t s t e a d y s t a t e c o n d i t i o n s . The p r i m a r y purpose o f t h e s e SRs i s t o e n s u r e secondary c o n t a i n m e n t boundary i n t e g r i t y . The secondary p u r p o s e o f t h e s e SRs i s t o e n s u r e t h a t t h e SGT subsystem b e i n g t e s t e d f u n c t i o n s as d e s i g n e d . There i s a S e p a r a t e LCO w i t h S u r v e i l l a n c e Requirements w h i c h s e r v e s t h e p r i m a r y purpose o f e n s u r i n g OPERABLITY o f t h e SGT System. These SRs need n o t be p e r f o r m e d w i t h each SGT subsystem. The SGT subsystem used f o r t h e s e S u r v e i l l a n c e s i s s t a g g e r e d t o ensure t h a t i n a d d i t i o n t o t h e r e q u i r e m e n t s o f LCO 3.6.4.3, e i t h e r SGT subsystem w i l l p e r f o r m t h i s t e s t . The i n o p e r a b i l i t y o f t h e SGT System does n o t n e c e s s a r i l y c o n s t i t u t e a f a i l u r e o f t h e s e S u r v e i l l a n c e s r e l a t i v e t o t h e secondary c o n t a i n m e n t OPERABILITY. O p e r a t i n g e x p e r i e n c e has shown t h e secondary c o n t a i n m e n t boundary u s u a l l y passes t h e s e S u r v e i l l a n c e s when p e r f o r m e d a t t h e 24 month Frequency. T h e r e f o r e , t h e Frequency was c o n c l u d e d t o be a c c e p t a b l e f r o m a r e l i a b i l i t y standpoint .

REFERENCES 1. UFSAR, S e c t i o n 14.6.3.

2. UFSAR, S e c t i o n 14.6.4.

PBAPS U N I T 2 B 3.6-77 R e v i s i o n No.

sc Iv s B 3.6.4.2 BASES APPLICABLE e s t a b l i s h e d b y SCIVs i s r e q u i r e d t o e n s u r e t h a t l e a k a g e f r o m SAFETY ANALYSES t h e p r i m a r y c o n t a i n m e n t i s p r o c e s s e d b y t h e S t a n d b y Gas (continued) T r e a t m e n t ( S G T ) System b e f o r e b e i n g r e l e a s e d t o t h e e n v i ronment.

M a i n t a i n i n g SCIVs OPERABLE w i t h i s o l a t i o n t i m e s w i t h i n l i m i t s ensures t h a t f i s s i o n products w i l l remain trapped i n s i d e secondary containment so t h a t t h e y can be t r e a t e d b y t h e SGT System p r i o r t o d i s c h a r g e t o t h e e n v i r o n m e n t .

SCIVs s a t i s f y C r i t e r i o n 3 o f t h e NRC P o l i c y S t a t e m e n t .

LCO SCIVs f o r m a p a r t o f t h e s e c o n d a r y c o n t a i n m e n t b o u n d a r y .

The S C I V s a f e t y f u n c t i o n i s r e l a t e d t o c o n t r o l o f o f f s i t e r a d i a t ion r e 1 e a s e s r e s u l t i n g f rorn DBAs.

The power o p e r a t e d a u t o m a t i c i s o l a t i o n v a l v e s a r e c o n s i d e r e d I OPERABLE when t h e i r i s o l a t i o n t i m e s a r e w i t h i n l i m i t s and t h e v a l v e s a c t u a t e on an a u t o m a t i c i s o l a t i o n s i g n a l . The v a l v e s c o v e r e d b y t h i s LCO, a l o n g w i t h t h e i r a s s o c i a t e d s t r o k e t i m e s , a r e l i s t e d i n R e f e r e n c e 3.

The n o r m a l l y c l o s e d i s o l a t i o n v a l v e s o r b l i n d f l a n g e s a r e c o n s i d e r e d OPERABLE when manual v a l v e s a r e c l o s e d o r open i n accordance w i t h a p p r o p r i a t e a d m i n i s t r a t i v e c o n t r o l s ,

a u t o m a t i c SCIVs a r e d e - a c t i v a t e d and s e c u r e d i n t h e i r c l o s e d p o s i t i o n , and b l i n d f l a n g e s a r e i n p l a c e . These p a s s i v e i s o l a t i o n v a l v e s o r d e v i c e s a r e l i s t e d i n R e f e r e n c e 3.

APPLICABILITY I n MODES 1, 2, and 3, a DBA c o u l d l e a d t o a f i s s i o n p r o d u c t release t o t h e primary containment t h a t leaks t o t h e s e c o n d a r y c o n t a i n m e n t . T h e r e f o r e , t h e OPERABILITY o f SCIVs i s required.

I n MODES 4 and 5 , t h e p r o b a b i l i t y and consequences o f t h e s e e v e n t s a r e r e d u c e d due t o p r e s s u r e and t e m p e r a t u r e l i m i t a t i o n s i n t h e s e MODES. T h e r e f o r e , m a i n t a i n i n g SCIVs OPERABLE i s n o t r e q u i r e d i n MODE 4 o r 5, e x c e p t f o r o t h e r s i t u a t i o n s under which s i g n i f i c a n t r a d i o a c t i v e releases can b e p o s t u l a t e d , s u c h as d u r i n g o p e r a t i o n s w i t h a p o t e n t i a l f o r d r a i n i n g t h e r e a c t o r v e s s e l (OPDRVs), d u r i n g CORE ALTERATIONS, o r d u r i n g movement o f i r r a d i a t e d f u e l assemblies i n t h e secondary containment. Moving i r r a d i a t e d f u e l a s s e m b l i e s i n t h e s e c o n d a r y c o n t a i n m e n t may a l s o o c c u r i n MODES 1, 2, and 3.

- ~- -

( c o n t in u e d B 3.6-79 R e v i s i o n No.

SCIVs B 3.6.4.2 BASES ACTIONS A . 1 and A . 2 (continued) c o n t a i n m e n t p e n e t r a t i o n s r e q u i r e d t o be i s o l a t e d f o l l o w i n g an a c c i d e n t , b u t no l o n g e r c a p a b l e o f b e i n g a u t o m a t i c a l l y i s o l a t e d , w i l l be i n t h e i s o l a t i o n p o s i t i o n s h o u l d an e v e n t o c c u r . The C o m p l e t i o n Time o f once p e r 3 1 days i s a p p r o p r i a t e because t h e i s o l a t i o n d e v i c e s a r e o p e r a t e d under a d m i n i s t r a t i v e c o n t r o l s and t h e p r o b a b i l i t y o f t h e i r m i s a l i g n m e n t i s l o w . T h i s R e q u i r e d A c t i o n does n o t r e q u i r e any t e s t i n g o r d e v i c e mani p u l a t i on. R a t h e r , i t in v o l ves v e r i f i c a t i o n t h a t t h e a f f e c t e d p e n e t r a t i o n remains i s o l a t e d .

R e q u i r e d A c t i o n A.2 i s m o d i f i e d by two Notes. Note 1 a p p l i e s t o d e v i c e s l o c a t e d i n h i g h r a d i a t i o n a r e a s and a l l o w s them t o be v e r i f i e d c l o s e d b y use o f a d m i n i s t r a t i v e c o n t r o l s . A1 l o w i n g v e r i f i c a t i o n b y admini s t r a t i v e c o n t r o l s i s c o n s i d e r e d a c c e p t a b l e , s i n c e access t o t h e s e a r e a s i s t y p i c a l l y r e s t r i c t e d . Note 2 a p p l i e s t o i s o l a t i o n d e v i c e s t h a t a r e locked, sealed, o r otherwise secured i n p o s i t i o n and a l l o w s t h e s e d e v i c e s t o be v e r i f i e d c l o s e d by use o f a d m i n i s t r a t i v e means. A l l o w i n g v e r i f i c a t i o n by a d m i n i s t r a t i v e means i s c o n s i d e r e d a c c e p t a b l e , s i n c e t h e f u n c t i o n o f l o c k i n g , s e a l i n g , o r s e c u r i n g components i s t o ensure t h a t these devices are n o t i n a d v e r t e n t l y repositioned. Therefore, t h e p r o b a b i l i t y o f misalignment, once t h e y have been v e r i f i e d t o be i n t h e p r o p e r p o s i t i o n ,

i s low.

W i t h two SCIVs i n one o r more p e n e t r a t i o n f l o w p a t h s i n o p e r a b l e , t h e a f f e c t e d p e n e t r a t i o n f l o w p a t h must be i s o l a t e d w i t h i n 4 h o u r s . The method o f i s o l a t i o n must i n c l u d e t h e use o f a t l e a s t one i s o l a t i o n b a r r i e r t h a t c a n n o t be a d v e r s e l y a f f e c t e d b y a s i n g l e a c t i v e f a i l u r e ,

I s o l a t i o n b a r r i e r s t h a t meet t h i s c r i t e r i o n a r e a c l o s e d and d e - a c t i v a t e d a u t o m a t i c v a l v e , a c l o s e d manual v a l v e , and a b l i n d f l a n g e . The 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months C o m p l e t i o n Time i s r e a s o n a b l e c o n s i d e r i n g t h e t i m e r e q u i r e d t o i s o l a t e t h e p e n e t r a t i o n and t h e p r o b a b i l i t y o f a DBA, w h i c h r e q u i r e s t h e SCIVs t o c l o s e ,

o c c u r r i n g d u r i n g t h i s s h o r t t i m e , i s v e r y low.

The C o n d i t i o n has been m o d i f i e d by a Note s t a t i n g t h a t Condition B i s only applicable t o penetration f l o w paths w i t h two i s o l a t i o n v a l v e s . T h i s c l a r i f i e s t h a t o n l y C o n d i t i o n A i s e n t e r e d i f one S C I V i s i n o p e r a b l e i n each o f two p e n e t r a t i o n s .

( c o n t i nued 1 PBAPS UNIT 2 B 3.6-81 R e v i s i o n No.

SCIVS B 3.6.4.2 BASES ACTIONS C . 1 and C.2

( c o n t inued 1 I f any R e q u i r e d A c t i o n and a s s o c i a t e d C o m p l e t i o n Time c a n n o t be m e t , t h e p l a n t must b e b r o u g h t t o a MODE i n w h i c h t h e LCO does n o t a p p l y . To a c h i e v e t h i s s t a t u s , t h e p l a n t m u s t b e b r o u g h t t o a t l e a s t MODE 3 w i t h i n 12 h o u r s and t o MODE 4 w i t h i n 36 h o u r s . The a l l o w e d C o m p l e t i o n Times a r e r e a s o n a b l e , based on o p e r a t i n g e x p e r i e n c e , t o r e a c h t h e r e q u i r e d p l a n t c o n d i t i o n s f r o m f u l l power c o n d i t i o n s i n an o r d e r l y manner and w i t h o u t c h a l l e n g i n g p l a n t s y s t e m s .

D.1. D.2. and D.3 I f any R e q u i r e d A c t i o n and a s s o c i a t e d C o m p l e t i o n Time a r e n o t met, t h e p l a n t must b e p l a c e d i n a c o n d i t i o n i n w h i c h t h e LCO does n o t a p p l y . I f a p p l i c a b l e , CORE ALTERATIONS and t h e movement o f i r r a d i a t e d f u e l a s s e m b l i e s i n t h e s e c o n d a r y c o n t a i n m e n t must be i m m e d i a t e l y suspended. S u s p e n s i o n o f t h e s e a c t i v i t i e s s h a l l n o t p r e c l u d e c o m p l e t i o n o f movement o f a component t o a s a f e p o s i t i o n . A l s o , i f a p p l i c a b l e ,

a c t i o n s m u s t be i m m e d i a t e l y i n i t i a t e d t o suspend OPDRVs i n o r d e r t o m i n i m i z e t h e p r o b a b i l i t y o f a v e s s e l d r a i n d o w n and t h e s u b s e q u e n t p o t e n t i a1 f o r f i s s i on p r o d u c t r e 1 e a s e .

A c t i o n s m u s t c o n t i n u e u n t i l OPDRVs a r e suspended.

R e q u i r e d A c t i o n D . 1 has b e e n m o d i f i e d b y a N o t e s t a t i n g t h a t LCO 3 . 0 . 3 i s n o t a p p l i c a b l e . I f moving i r r a d i a t e d f u e l a s s e m b l i e s w h i l e i n MODE 4 o r 5, LCO 3.0.3 w o u l d n o t s p e c i f y any a c t i o n . I f m o v i n g f u e l w h i l e i n MODE 1, 2, o r 3, t h e f u e l movement i s i n d e p e n d e n t o f r e a c t o r o p e r a t i o n s .

T h e r e f o r e , i n e i t h e r c a s e , i n a b i l i t y t o suspend movement o f i r r a d i a t e d f u e l assemblies would n o t be a s u f f i c i e n t reason t o r e q u i r e a r e a c t o r shutdown.

SURVEILLA~CE SR 3.6.4. 2 . 1 REQUIREMENTS T h i s SR v e r i f i e s t h a t e a c h s e c o n d a r y c o n t a i n m e n t manual i s o l a t i o n v a l v e and b l i n d f l a n g e t h a t i s n o t l o c k e d , s e a l e d ,

o r o t h e r w i s e s e c u r e d and i s r e q u i r e d t o be c l o s e d d u r i n g a c c i d e n t c o n d i t i o n s i s c l o s e d . The SR h e l p s t o e n s u r e t h a t I

p o s t a c c i d e n t l e a k a g e o f r a d i o a c t i v e f l u i d s o r gases o u t s i d e o f t h e secondary containment boundary i s w i t h i n design l i m i t s . T h i s SR does n o t r e q u i r e any t e s t i n g or v a l v e manipulation. Rather, i t i n v o l v e s v e r i f i c a t i o n t h a t those SCIVs i n s e c o n d a r y c o n t a i n m e n t t h a t a r e c a p a b l e o f b e i n g mispositioned are i n the correct position.

( c o n t inued 1 PBAPS UNIT 2 B 3.6-82 R e v i s i o n No.

SCIVs B 3.6.4.2 BASES SURVEILLANCE SR 3.6.4.2.1 (continued 1 REQUIREMENTS S i n c e t h e s e SCIVs a r e r e a d i l y a c c e s s i b l e t o p e r s o n n e l d u r i n g normal o p e r a t i o n and v e r i f i c a t i o n o f t h e i r p o s i t i o n i s r e l a t i v e l y e a s y , t h e 3 1 day F r e q u e n c y was chosen t o p r o v i d e added a s s u r a n c e t h a t t h e SCIVs a r e i n t h e c o r r e c t p o s i t i o n s . T h i s S R does n o t a p p l y t o v a l v e s t h a t a r e l o c k e d ,

sealed, o r otherwise secured i n t h e c l o s e d p o s i t i o n , since t h e s e w e r e v e r i f i e d t o b e i n t h e c o r r e c t p o s i t i o n upon locking, s e a l i n g , o r s e c u r i n g .

Two N o t e s have been added t o t h i s SR. The f i r s t N o t e a p p l i e s t o v a l v e s and b l i n d f l a n g e s l o c a t e d i n h i g h r a d i a t i o n a r e a s and a l l o w s them t o b e v e r i f i e d b y u s e o f admi n i s t r a t i ve c o n t r o l s . A1 1 o w i n g v e r i f i c a t i o n by a d m i n i s t r a t i v e c o n t r o l s i s considered acceptable, s i n c e access t o t h e s e areas i s t y p i c a l l y r e s t r i c t e d d u r i n g MODES 1, 2, and 3 f o r ALARA r e a s o n s . T h e r e f o r e , t h e p r o b a b i l i t y o f m i s a l i g n m e n t o f t h e s e SCIVs, once t h e y h a v e been v e r i f i e d t o b e i n t h e p r o p e r p o s i t i o n , i s l o w .

A second N o t e has been i n c l u d e d t o c l a r i f y t h a t SCIVs t h a t a r e open u n d e r a d m i n i s t r a t i v e c o n t r o l s a r e n o t r e q u i r e d t o meet t h e SR d u r i n g t h e t i m e t h e SCIVs a r e open.

SR 3.6.4.2.2 V e r i f y i n g t h a t t h e i s o l a t i o n t i m e o f e a c h power o p e r a t e d automatic SCIV i s w i t h i n l i m i t s i s r e q u i r e d t o demonstrate I OPERABILITY. The i s o l a t i o n t i m e t e s t e n s u r e s t h a t t h e S C I V w i l l i s o l a t e i n a t i m e p e r i o d l e s s than o r equal t o t h a t assumed i n t h e s a f e t y a n a l y s e s . The F r e q u e n c y o f t h i s SR i s i n a c c o r d a n c e w i t h t h e I n s e r v i c e T e s t i n g Program.

SR 3'6.4.3.3 V e r i f y i n g t h a t e a c h a u t o m a t i c S C I V c l o s e s on a s e c o n d a r y containment i s o l a t i o n signal i s r e q u i r e d t o prevent leakage o f r a d i o a c t i v e m a t e r i a l from secondary containment f o l l o w i n g a DBA o r o t h e r a c c i d e n t s . T h i s SR e n s u r e s t h a t e a c h a u t o m a t i c S C I V w i l l a c t u a t e t o t h e i s o l a t i o n p o s i t i o n on a s e c o n d a r y c o n t a i n m e n t i s o l a t i o n s i g n a l . The LOGIC SYSTEM FUNCTIONAL TEST i n LCO 3.3.6.2, "Secondary Containment I s o l a t i o n I n s t r u m e n t a t i o n , " o v e r l a p s t h i s SR t o p r o v i d e c o m p l e t e t e s t i n g o f t h e s a f e t y f u n c t i o n . The 24 m o n t h Frequency i s based on t h e need t o p e r f o r m t h i s S u r v e i l l a n c e (continued)

PBAPS UNIT 2 B 3.6-83 R e v i s i o n No.

AC S o u r c e s - O p e r a t i n g B 3.8.1 BASES SURVEILLANCE SR 3.8.1.9 (continued)

REQUIREMENTS e q u i p m e n t powered b y t h e DG. SR 3.8.1.9.a corresponds t o t h e maximum f r e q u e n c y e x c u r s i o n , w h i l e SR 3.8.1.9.b and SR 3 . 8 . 1 . 9 . c p r o v i d e s t e a d y s t a t e v o l t a g e and f r e q u e n c y v a l u e s t o which t h e system must r e c o v e r f o l l o w i n g l o a d r e j e c t i o n . The 24 month F r e q u e n c y t a k e s i n t o c o n s i d e r a t i o n p l a n t c o n d i t i o n s r e q u i r e d t o p e r f o r m t h e S u r v e i 11 ance, and i s i n t e n d e d t o be c o n s i s t e n t w i t h expected f u e l c y c l e 1e n g t h s .

T h i s SR i s m o d i f i e d b y t w o N o t e s . N o t e 1 e n s u r e s t h a t t h e DG i s t e s t e d u n d e r l o a d c o n d i t i o n s t h a t a r e as c l o s e t o d e s i g n b a s i s c o n d i t i o n s as p o s s i b l e . When s y n c h r o n i z e d w i t h o f f s i t e p o w e r , t e s t i n g s h o u l d be p e r f o r m e d a t a power f a c t o r o f I0 . 8 9 . T h i s power f a c t o r i s r e p r e s e n t a t i v e o f t h e a c t u a l i n d u c t i v e l o a d i n g a DG w o u l d see u n d e r d e s i g n b a s i s a c c i d e n t c o n d i t i o n s . Under c e r t a i n c o n d i t i o n s , however, N o t e 1 a1 1 ows t h e S u r v e i l l a n c e t o be c o n d u c t e d a t a power f a c t o r o t h e r t h a n I0.89. These c o n d i t i o n s o c c u r when g r i d v o l t a g e i s h i g h ,

and t h e a d d i t i o n a l f i e l d e x c i t a t i o n needed t o g e t t h e power f a c t o r t o I0.89 r e s u l t s i n v o l t a g e s on t h e emergency b u s s e s t h a t a r e t o o h i g h . Under t h e s e c o n d i t i o n s , t h e power f a c t o r s h o u l d be m a i n t a i n e d as c l o s e as p r a c t i c a b l e t o 0 . 8 9 w h i l e s t i 1 1 m a i n t a i n i n g a c c e p t a b l e v o l t a g e 1 i m i t s on t h e emergency b u s s e s . I n o t h e r c i r c u m s t a n c e s , t h e g r i d v o l t a g e may b e such t h a t t h e DG e x c i t a t i o n l e v e l s needed t o o b t a i n a power f a c t o r o f 0 . 8 9 may n o t c a u s e u n a c c e p t a b l e v o l t a g e s on t h e emergency busses, b u t t h e e x c i t a t i o n l e v e l s a r e i n excess o f t h o s e recommended f o r t h e DG. I n such c a s e s , t h e power f a c t o r s h a l l b e m a i n t a i n e d as c l o s e as p r a c t i c a b l e t o 0.89 w i t h o u t e x c e e d i n g t h e DG e x c i t a t i o n l i m i t s .

To m i n i m i z e t e s t i n g o f t h e DGs, N o t e 2 a l l o w s a s i n g l e t e s t

( i n s t e a d o f t w o t e s t s , one f o r each u n i t ) t o s a t i s f y t h e requirements f o r b o t h u n i t s . T h i s i s allowed s i n c e t h e main purpose o f t h e S u r v e i l l a n c e can be met b y p e r f o r m i n g t h e t e s t on e i t h e r u n i t . I f t h e DG f a i l s one o f t h e s e S u r v e i l l a n c e s , t h e DG s h o u l d be c o n s i d e r e d i n o p e r a b l e on b o t h u n i t s , u n l e s s t h e cause o f t h e f a i l u r e can b e d i r e c t l y r e l a t e d t o o n l y one u n i t .

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(continued)

PBAPS UNIT 2 B 3.8-26 R e v i s i o n No.

AC Sources-Operating B 3.8.1 BASES SURVEILLANCE SR 3.8.1.10 REQUIREMENTS Consistent with Regulatory Guide 1 . 9 (Ref. 31, paragraph C . 2 . 2 . 8 , t h i s S u r v e i l l a n c e demonstrates the DG c a p a b i l i t y t o r e j e c t a f u l l l o a d without overspeed t r i p p i n g or exceeding the predetermined voltage l i m i t s . The DG f u l l load r e j e c t i o n may occur because of a system f a u l t or i n a d v e r t e n t breaker t r i p p i n g . This S u r v e i l l a n c e ensures proper engine generator load response under t h e simulated t e s t c o n d i t i o n s . This t e s t simulates the l o s s of the t o t a l connected l o a d t h a t the DG experiences following a f u l l l o a d r e j e c t i o n a n d v e r i f i e s t h a t t h e DG does n o t t r i p upon l o s s of t h e l o a d . These acceptance c r i t e r i a provide DG damage p r o t e c t i o n . While the DG i s n o t expected t o experience t h i s t r a n s i e n t during a n e v e n t , a n d continue t o be a v a i l a b l e ,

t h i s response ensures t h a t the DG i s n o t degraded f o r f u t u r e a p p l i c a t i o n , including reconnection t o the bus i f the t r i p i n i t i a t o r can be corrected or i s o l a t e d .

The 24 m o n t h Frequency takes i n t o consideration p l a n t conditions required t o perform t h e S u r v e i l l a n c e , a n d i s intended t o be c o n s i s t e n t with expected fuel cycle l e n g t h s .

This SR i s modified by two Notes. Note 1 ensures t h a t the DG i s t e s t e d under l o a d conditions t h a t a r e as c l o s e t o design basi s condi t i ons as possi b l e . When synchronized with o f f s i t e power, t e s t i n g should be performed a t a power f a c t o r of I 0.89. This power f a c t o r i s r e p r e s e n t a t i v e of the actual inductive loading a DG w o u l d see under design b a s i s accident c o n d i t i o n s . Under c e r t a i n c o n d i t i o n s , however, Note 1 allows t h e Surveillance t o be conducted a t a power f a c t o r other t h a n I 0.89. These conditions occur when grid voltage i s high, a n d the additional f i e l d e x c i t a t i o n needed t o g e t the power f a c t o r t o I 0.89 r e s u l t s in voltages on t h e emergency busses t h a t a r e t o o high. Under t h e s e c o n d i t i o n s ,

t h e power f a c t o r should be maintained as c l o s e as p r a c t i c a b l e t o 0.89 while s t i l l maintaining acceptable voltage l i m i t s on the emergency busses. I n o t h e r circumstances, t h e g r i d voltage may be such t h a t t h e DG e x c i t a t i o n l e v e l s needed t o obtain a power f a c t o r of 0.89 may n o t cause unacceptable voltages on the emergency busses, (continued)

P B A P S UNIT 2 B 3.8-27 Revision No.

AC Sources-Operating B 3.8.1 BASES SURVEILLANCE SR 3.8.1.10 (continued)

REQUIREMENTS b u t the e x c i t a t i o n l e v e l s are in excess of those recommended f o r the DG. I n such c a s e s , the power f a c t o r s h a l l be maintained as close as practicable t o 0.89 without exceeding the DG e x c i t a t i o n l i m i t s , To minimize t e s t i n g of the D G s, Note 2 allows a s i n g l e t e s t (instead of two t e s t s , one f o r each u n i t ) t o s a t i s f y the requirements f o r b o t h u n i t s . This i s allowed since the main purpose of the Surveillance can be met by performing the t e s t on e i t h e r u n i t . I f the DG f a i l s one of these Surveillances, the DG should be considered inoperable on b o t h u n i t s , unless the cause of the f a i l u r e can be d i r e c t l y r e l a t e d t o only one u n i t .

SR 3.8.1,11 Consistent w i t h Regulatory Guide 1 . 9 (Ref. 31, paragraph C.2.2.4, t h i s Surveillance demonstrates the as designed operation of the standby power sources during l o s s of the o f f s i t e source. This t e s t v e r i f i e s a l l actions encountered from the l o s s of o f f s i t e power, including shedding of a l l loads a n d energization of the emergency buses a n d respective loads from the DG. I t f u r t h e r demonstrates the c a p a b i l i t y of the DG t o automatically achieve the required voltage a n d frequency within the speci f ied time.

The DG a u t o - s t a r t a n d energization of t h e associated 4 kV emergency b u s time of 10 seconds i s derived from requirements of the accident analysis f o r responding t o a design basis l a r g e break LOCA. The Surveillance should be continued f o r a minimum of 5 minutes in order t o demonstrate t h a t a l l s t a r t i n g t r a n s i e n t s have decayed a n d s t a b i l i t y h a s been achieved.

(conti nued 1 PBAPS UNIT 2 B 3.8-27a Revision No. I

A C Sources-Operating B 3.8.1 BASES SURVEILLANCE SR 3.8.1.14 REQUIRE~ENTS (conti nued) Consistent w i t h Regulatory Guide 1 . 9 (Ref. 31, paragraph C.2.2.9, t h i s Surveillance requires demonstration t h a t the DGs can s t a r t a n d run continuously a t f u l l l o a d c a p a b i l i t y f o r a n i n t e r v a l o f n o t l e s s t h a n 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . 4 However, l o a d values may deviate from the Regulatory Guide such t h a t the D G operates f o r 2 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months a t a l o a d approximately equivalent t o 92% t o 108%o f the continuous d u t y r a t i n g of the D G , a n d 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months o f which i s a t a l o a d approximately equivalent t o 108% t o 115% of t h e continuous d u t y r a t i n g of t h e DG. The DG s t a r t s f o r t h i s Surveillance can be performed e i t h e r from standby or h o t conditions. The provisions f o r prelube a n d warmup, discussed i n SR 3.8.1.2, a n d for gradual l o a d i n g , discussed i n SR 3.8.1.3, a r e applicable t o t h i s SR.

This Surveillance v e r i f i e s , i n d i r e c t l y , t h a t t h e DGs a r e capable of synchronizing a n d accepting loads equivalent t o p o s t accident loads. The DGs are t e s t e d a t a l o a d approximately equivalent t o t h e i r continuous d u t y r a t i n g ,

even t h o u g h the post accident loads exceed t h e continuous r a t i n g . This i s acceptable because regular surveillance t e s t i n g a t post accident loads i s injurious t o the D G , a n d imprudent because the same level o f assurance i n the a b i l i t y o f the DG t o provide post accident l o a d s can be developed by monitoring engine parameters during s u r v e i l l a n c e t e s t i n g .

The values o f the t e s t i n g parameters can then be q u a l i t a t i v e l y compared t o expected values a t post accident engine loads. In m a k i n g t h i s comparison i t i s necessary t o consider the engine parameters as i n t e r r e l a t e d indicators o f remaining DG capacity, r a t h e r t h a n independent i n d i c a t o r s .

The important engine parameters t o be considered i n m a k i n g t h i s comparison include, fuel rack p o s i t i o n , scavenging a i r pressure, exhaust temperature a n d pressure, engine output, j a c k e t water temperature, a n d lube o i l temperature. W i t h t h e DG operating a t or near continuous r a t i n g a n d the observed values o f t h e above parameters l e s s t h a n expected post accident values, a q u a l i t a t i v e extrapolation which shows the DG i s capable o f accepting post accident loads can be made w i t h o u t requiring detrimental t e s t i n g .

(continued)

PBAPS UNIT 2 B 3.8-31 Revision No.

AC Sources-Operating B 3.8.1 BASES SURVEILLANCE SR 3.8.1.14 (continued)

RE~UIREMENTS A l o a d b a n d i s provided t o avoid routine overloading of the DG. Routine overloading may r e s u l t in more frequent teardown inspections in accordance with vendor recommendations i n order t o maintain DG O P E R A B I L I T Y .

The 24 m o n t h Frequency takes i n t o consideration plant conditions required t o perform the Surveillance; a n d i s intended t o be consistent with expected fuel cycle lengths.

This Surveillance has been modified by three Notes. Note 1 s t a t e s t h a t momentary t r a n s i e n t s due t o changing bus loads do n o t i n v a l i d a t e t h i s t e s t . Similarly, momentary power f a c t o r t r a n s i e n t s above the l i m i t d o n o t i n v a l i d a t e the t e s t . Note 2 ensures t h a t the DG i s t e s t e d under load conditions t h a t are as close t o design basis conditions as possi b l e . When synchronized wi t h o f f s i t e power, t e s t i n g should be performed a t a power f a c t o r of s 0.89. This power f a c t o r i s representative of the actual inductive loading a DG would see under design basis accident conditions. Under c e r t a i n condi t i ons, however, Note 2 a1 1 ows the Survei 11 ance t o be conducted a t a power f a c t o r other t h a n s 0 . 8 9 . These conditions occur when grid voltage i s high, and the additional f i e l d e x c i t a t i o n needed t o get the power f a c t o r t o 5 0.89 r e s u l t s in voltages on the emergency busses t h a t are t o o high. Under these conditions, the ower f a c t o r should be maintained as close as practicab e t o 0.89 while 7 s t i 11 maintaini n g acceptable voltage 1 imi t s on the emergency busses. I n other circumstances, the grid voltage may be such t h a t the DG e x c i t a t i o n l e v e l s needed t o obtain a power f a c t o r of 0.89 may n o t cause unacceptable voltages on the emergency busses, b u t the e x c i t a t i o n l e v e l s are in excess of those recommended f o r the DG. I n such cases, the power f a c t o r shall be maintained as close as practicable t o 0.89 without exceeding the DG exci t a t i on 1 imi t s . To m i nimi ze t e s t i n g of the D G s , Note 3 allows a s i n g l e t e s t ( i n s t e a d of two t e s t s , one f o r each u n i t ) t o s a t i s f y the requirements f o r b o t h u n i t s . This i s allowed since the main purpose of the Surveillance can be met by erforming the t e s t on e i t h e r u n i t . If the DG f a i l s one of t l e s e Surveillances the DG should be considered inoperable on b o t h u n i t s , uniess the cause of the f a i l u r e can be d i r e c t l y related t o o n l y one unit.

SR 3.8.1.15 This Surveillance demonstrates t h a t the diesel engine can r e s t a r t from a h o t condition, such as subsequent t o shutdown from normal Surveillances, a n d achieve the required voltage a n d frequency within 10 seconds. The minimum voltage a n d frequency s t a t e d in the SR are those necessary t o ensure the DG can accept DBA loading while maintaining acceptable voltage a n d frequency l e v e l s . Stable operation a t the n o m i n a l voltage a n d frequency values i s a1 so essenti a1 t o e s t a b l i s h i n g DG O P E R A B I L I T Y , b u t a time c o n s t r a i n t i s n o t imposed. This i s because a typical DG will experience a (continued)

PBAPS UNIT 2 B 3.8-32 Revision No.

AC Sources-Shutdown B 3.8.2 BASES LCO o f f s i t e c i r c u i t . I n a d d i t i o n , some equipment t h a t may be

( c o n t inued 1 r e q u i r e d b y U n i t 2 i s powered f r o m U n i t 3 s o u r c e s ( e . g . ,

Standby Gas T r e a t m e n t (SGT) System). T h e r e f o r e , one q u a l i f i e d c i r c u i t between t h e o f f s i t e t r a n s m i s s i o n n e t w o r k and t h e U n i t 3 o n s i t e C l a s s 1 E AC e l e c t r i c a l power d i s t r i b u t i o n s u b s y s t e m ( s ) , and one DG ( n o t n e c e s s a r i l y a d i f f e r e n t DG t h a n t h o s e b e i n g used t o meet LCO 3.8.2.b r e q u i r e m e n t s ) c a p a b l e o f s u p p l y i n g power t o one o f t h e r e q u i r e d U n i t 3 subsystems o f each o f t h e r e q u i r e d components must a l s o be OPERABLE. T o g e t h e r , OPERABILITY o f t h e r e q u i r e d o f f s i t e c i r c u i t ( s 1 and r e q u i r e d DG( s 1 e n s u r e s t h e a v a i l a b i l i t y o f s u f f i c i e n t AC s o u r c e s t o o p e r a t e t h e p l a n t i n a s a f e manner and t o m i t i g a t e t h e consequences o f p o s t u l a t e d e v e n t s d u r i n g shutdown ( e . g . , f u e l h a n d l i n g a c c i d e n t s and r e a c t o r v e s s e l d r a i n d o w n ) . A u t o m a t i c i n i t i a t i o n o f t h e r e q u i r e d DG d u r i n g shutdown c o n d i t i o n s i s s p e c i f i e d i n LCO 3.3.5.1, E C C S I n s t r u m e n t a t i o n , and LCO 3.3.8.1, LOP I n s t r u m e n t a t i o n .

The q u a l i f i e d U n i t 2 o f f s i t e c i r c u i t must be c a p a b l e o f m a i n t a i n i n g r a t e d f r e q u e n c y and v o l t a g e w h i l e c o n n e c t e d t o t h e r e s p e c t i v e U n i t 2 4 kV emergency b u s ( e s ) , and o f a c c e p t i n g r e q u i r e d l o a d s d u r i n g an a c c i d e n t . Qua1 i f i e d o f f s i t e c i r c u i t s a r e t h o s e t h a t a r e d e s c r i b e d i n t h e UFSAR, T e c h n i c a l S p e c i f i c a t i o n Bases S e c t i o n 3.8.1 and a r e p a r t o f the licensing basis f o r the u n i t . A Unit 2 o f f s i t e c i r c u i t c o n s i s t s o f t h e i n c o m i n g b r e a k e r and d i s c o n n e c t t o t h e s t a r t u p and emergency a u x i l i a r y t r a n s f o r m e r , t h e r e s p e c t i v e c i r c u i t p a t h t o t h e emergency a u x i l i a r y t r a n s f o r m e r , and t h e c i r c u i t p a t h t o t h e U n i t 2 4 kV emergency buses r e q u i r e d by LCO 3.8.8, i n c l u d i n g f e e d e r b r e a k e r s t o t h e r e q u i r e d U n i t 2 4 kV emergency buses. A q u a l i f i e d U n i t 3 o f f s i t e c i r c u i t ' s r e q u i r e m e n t s a r e t h e same as t h e U n i t 2 c i r c u i t ' s requirements, except t h a t t h e c i r c u i t path, i n c l u d i n g t h e f e e d e r b r e a k e r s , i s t o t h e U n i t 3 4 kV emergency buses r e q u i r e d t o be OPERABLE by LCO 3.8.8.

The r e q u i r e d DGs must be c a p a b l e o f s t a r t i n g , a c c e l e r a t i n g t o r a t e d speed and v o l t a g e , and c o n n e c t i n g t o t h e i r r e s p e c t i v e U n i t 2 emergency bus on d e t e c t i o n o f bus u n d e r v o l t a g e . T h i s sequence must be a c c o m p l i s h e d w i t h i n 10 seconds. Each DG must a l s o be c a p a b l e o f a c c e p t i n g r e q u i r e d l o a d s w i t h i n t h e assumed l o a d i n g sequence i n t e r v a l s , and must c o n t i n u e t o o p e r a t e u n t i l o f f s i t e power can be r e s t o r e d t o t h e 4 kV emergency buses. These c a p a b i l i t i e s a r e r e q u i r e d t o b e met f r o m a v a r i e t y o f i n i t i a l c o n d i t i o n s such a s DG i n s t a n d b y w i t h e n g i n e h o t and DG i n s t a n d b y w i t h e n g i n e a t a m b i e n t c o n d i t i o n s . A d d i t i o n a l (continued2 PBAPS U N I T 2 B 3.8-42 R e v i s i o n No.

s Ls 2.0 2.0 SAFETY LIMITS (SLs) 2.1 SLS 2.1.1 Reactor Core SLs 2.1.1.1 W i t h the reactor steam dome pressure < 785 psig or core f l o w -= 10% rated core f l o w :

THERMAL POWER shall be ,< 25% RTP.

2.1.1.2 W i t h t h e reactor steam dome pressure 2 785 psig a n d core f l o w 2 10% rated core f l o w :

MCPR shall be 2 1 . 0 7 f o r two r e c i r c u l a t i o n l o o p operation or 2 1 . 0 9 f o r s i n g l e r e c i r c u l a t i o n l o o p operation.

2.1.1.3 Reactor vessel water level s h a l l be g r e a t e r t h a n the t o p of active irradiated f u e l .

2.1.2 Reacto r Coo l a n t Svstem Pressure SL Reactor steam dome pressure shall be I 1325 psig.

2.2 SL V i o l a t i o n s W i t h a n y SL v i o l a t i o n , the f o l l o w i n g actions shall be completed w i t h i n 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months s:

2.2.1 Restore compliance w i t h a l l S L s ; a n d 2.2.2 I n s e r t a l l i n s e r t a b l e control rods.

PBAPS UNIT 3 2.0-1 Amendm~nt No,

SLS 2.0 2.0 S L S PBAPS UNIT 3 2.0-2 A m e n d m e n t No.

LCO Appl ic a b i 1 it y 3.0 3.0 LIMITING C O ~ D I T I O N FOR O P ~ R ~ T I O (LCO) N APPLI~ABILITY LCO 3.0.1 LCOs s h a l l be met d u r i n g t h e MODES o r o t h e r s p e c i f i e d c o n d i t i o n s i n t h e A p p l i c a b i l i t y , e x c e p t as p r o v i d e d i n LCO 3.0.2 and LCO 3.0.7.

LCO 3.0.2 Upon d i s c o v e r y o f a f a i l u r e t o meet an LCO, t h e Required A c t i o n s o f t h e a s s o c i a t e d C o n d i t i o n s s h a l l be met, e x c e p t as p r o v i d e d i n LCO 3.0.5 and LCO 3.0.6.

I f t h e LCO i s met o r i s no l o n g e r a p p l i c a b l e p r i o r t o e x p i r a t i o n o f t h e s p e c i f i e d Completion Time(s) , completion o f t h e Required A c t i o n W i s n o t r e q u i r e d , unless otherwise stated.

LCO 3.0.3 When an LCO i s n o t met and t h e a s s o c i a t e d ACTIONS a r e n o t met, an a s s o c i a t e d ACTION i s n o t p r o v i d e d , o r i f d i r e c t e d b y t h e a s s o c i a t e d ACTIONS, t h e u n i t s h a l l be p l a c e d i n a MODE o r o t h e r s p e c i f i e d c o n d i t i o n i n w h i c h t h e LCO i s n o t a p p l i c a b l e , A c t i o n s h a l l be i n i t i a t e d w i t h i n 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months t o p l a c e t h e u n i t , as a p p l i c a b l e , i n :

a. MODE 2 w i t h i n 10 h o u r s ;

b. MODE 3 w i t h i n 13 h o u r s ; and

c. MODE 4 w i t h i n 37 h o u r s .

Exceptions t o t h i s S p e c i f i c a t i o n are s t a t e d i n t h e in d i v i d u a l Speci f ic a t i o n s .

Where c o r r e c t i v e measures a r e completed t h a t p e r m i t o p e r a t i o n i n accordance w i t h t h e LCO o r ACTIONS, c o m p l e t i o n o f t h e a c t i o n s r e q u i r e d by LCO 3.0.3 i s n o t r e q u i r e d .

LCO 3.0.3 i s o n l y a p p l i c a b l e i n MODES I , 2, and 3.

LCO 3.0.4 When an LCO i s n o t met, e n t r y i n t o a MODE o r o t h e r s p e c i f i e d c o n d i t i o n i n t h e A p p l i c a b i l i t y s h a l l o n l y be made:

a. When t h e a s s o c i a t e d ACTIONS t o be e n t e r e d p e r m i t c o n t i n u e d o p e r a t i o n i n t h e MODE o r o t h e r s p e c i f i e d c o n d i t i o n i n t h e A p p l i c a b i l i t y f o r an u n l i ~ i t e dp e r i o d o f time;

b. A f t e r performance o f a r i s k assessment a d d r e s s i n g i n o p e r a b l e systems and components, c o n s i d e r a t i o n o f t h e results, determination o f the acceptability o f (continued)

PBAPS UNIT 3 3.0-1 Amendment No.

C o n t r o l Rod Scram Times 3.1.4 3.1 ~ E A C T I V I T YCONTROL SYSTEMS 3.1.4 C o n t r o l Rod Scram Times LCO 3.1.4 a. No more t h a n 13 OPERABLE c o n t r o l r o d s s h a l l b e " s l o w , "

i n a c c o r d a n c e w i t h T a b l e 3.1.4-1; and

b. No more t h a n 2 OPERABLE c o n t r o l r o d s t h a t a r e " s l o w "

s h a l l occupy a d j a c e n t l o c a t i o n s .

APPLICABILITY: MODES 1 and 2 .

ACTIONS A. Requirements o f t h e A.l Be i n MODE 3. 12 h o u r s LCO n o t m e t .

SURVEILLA~~E REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.1.4.1 V e r i f y e a c h c o n t r o l r o d scram t i m e i s Prior t o I

w i t h i n t h e l i m i t s o f T a b l e 3.1.4-1 w i t h exceeding r e a c t o r steam dome p r e s s u r e 2 800 p s i g . 40% RTP a f t e r each r e a c t o r shutdown 2 120 d a y s (continued)

PBAPS UNIT 3 3.1-12 Amendment No.

C o n t r o l Rod Scram Times 3.1.4 SURVEILLANCE REQUIRE~ENTS SURVE I LLANCE FREQUENCY SR 3.1.4.2 V e r i f y , f o r a r e p r e s e n t a t i v e sample, each 120 days t e s t e d c o n t r o l r o d scram t i m e i s w i t h i n t h e cumulative l i m i t s o f T a b l e 3 . 1 . 4 - 1 w i t h r e a c t o r steam operation i n dome p r e s s u r e 2 800 p s i g . MODE 1 SR 3.1.4.3 V e r i f y each a f f e c t e d c o n t r o l r o d scram t i m e Prior t o i s w i t h i n t h e l i m i t s o f Table 3.1.4-1 w i t h declaring any r e a c t o r steam dome p r e s s u r e . control rod OPERABLE a f t e r work on c o n t r o l r o d o r CRD System t h a t could a f f e c t scram t i m e SR 3.1.4.4 V e r i f y each a f f e c t e d c o n t r o l r o d scram t i m e Prior t o i s w i t h i n t h e l i m i t s o f Table 3.1.4-1 w i t h exceeding r e a c t o r steam dome p r e s s u r e 2 800 p s i g . 40% RTP a f t e r work on c o n t r o l r o d o r CRD System t h a t could a f f e c t scram t i m e Prior t o exceedi ng 40%

RTP a f t e r f u e l novement w i t h i n the a f f e c t e d

ore c e l l PBAPS UNIT 3 3.1-13 Amendment No.

SDV Vent and D r a i n Valves 3.1.8 3.1 R E A C T I V I T Y CONTROL SYSTEMS 3.1.8 Scram D i s c h a r g e Volume ( S D V ) Vent and D r a i n Valves LCO 3.1.8 Each SDV v e n t and d r a i n v a l v e s h a l l be OPERABLE.

A P P L I ~ A B I L I T Y : MODES 1 and 2.

ACTIONS CONDITION I REQUIRED A C T I O N 1 C O ~ P L E T I OT~I M E A. One o r more SDV v e n t or drain lines with A.l Isolate the associated l i n e .

I 7 days one v a l v e i n o p e r a b l e .

B. One o r more SDV v e n t or d r a i n l i n e s w i t h B.l Isolate the a s s o c i a t e d 1 ine.

I 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months both valves in o p e r a b l e.

C. R e q u i r e d A c t i o n and C.1 Be i n MODE 3 .

associated Completion Time n o t met.

PBAPS U N I T 3 3.1-26 Amendment No.

MCPR 3.2.2 SURVEILLAN~E REQUIREME~TS ( c o n t i nued)

SURVEILL~NCE FREQ~ENCY SR 3.2.2.2 Determine t h e MCPR imits. Once w i t h i n 72 h o u r s a f t e r each c o m p l e t i o n o f SR 3.1.4.1 Once w i t h i n 72 h o u r s a f t e r each c o m p l e t i o n o f SR 3.1.4.2 Once w i t h i n 72 h o u r s a f t e r each c o m p l e t i o n o f SR 3.1.4.4 PBAPS UNIT 3 3.2-3 Amendment No.

F e e d w a t e r and M a i n T u r b i n e H i g h Water L e v e l T r i p I n s t r u m e n t a t i o n 3.3.2.2 3.3 INSTRUMENTATIO~

3.3.2.2 F e e d w a t e r and M a i n T u r b i n e H i g h Water L e v e l T r i p I n s t r u m e n t a t i o n LCO 3.3.2.2 Two c h a n n e l s p e r t r i p s y s t e m o f t h e D i g i t a l F e e d w a t e r C o n t r o l System (DFCS) h i g h w a t e r l e v e l t r i p i n s t r u m e n t a t i o n F u n c t i o n s h a l l b e OP~RABLE.

APPLICABILITY: THERMAL POkJER 2 25% RTP.

ACTIONS CO~DITIO~ REQUIRED ACTION COMPLETION TIME A. One o r more DFCS h i g h A.l Place channel i n 72 h o u r s w a t e r 1e v e l t r i p trip.

c h a n n e l s in o p e r a b l e .

B. DFCS h i g h w a t e r l e v e l B.1 R e s t o r e DFCS h i g h 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months t r i p capability not w a t e r 1e v e l t r i p mai n t a i ned. capability.

C. R e q u i r e d A c t i o n and c.1 --------MOTE---------

associ ated Completion Only a p p l i c a b l e i f Time n o t m e t . i n o p e r a b l e channel i s the result o f in o p e r a b l e f e e d w a t e r pump t u r b i n e o r m a i n turbine stop valve.

Remove a f f e c t e d 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months f e e d w a t e r pump(s) and main t u r b i n e v a l v e ( s )

from service.

c.2 Reduce THERMAL POkJER 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months t o < 25% RTP.

BAPS UNIT 3 3.3-22 Amendment No.

PAM I n ~ t r u ~ e n t a t i o n 3 .3 .3 .1 Table 3.3.3.1-1 (page 1 of 1)

Post Accident Monitoring Instrumentation CONDITIONS REFERENCED REQUIRED FROM REQUIRED FUNCTION ~HANNELS ACTION D . l

1. Reactor Pressure

2. Reactor Vessel Water Level (Wide Range)

3. Reactor Vessel Water Level (Fuel Zone)

4. Suppression Chamber Water Level (Wide Range)

5. Drywell Pressure (Wide Range)

6. Drywell Pressure (Subatmospheric Range)

7. Drywell High Range R a d i a t i o n

8. Penetration Flow P a t h PCIV Position 2 per penetration flow path (a)(b) I

9. Deleted

10. Deleted

11. Suppression Chamber Water Temperature 2(c) E (a) Not required for isolation valves whose associated penetration flow p a t h i s isolated by a t least one closed and deactivated automatic valve, closed m a n u a l valve, blind flange, or check valve with f l o w through the valve secured.

(b) Only one position indication channel i s required for penetration flow paths w i t h o n l y one installed control room indication channel.

(c) Each channel requires 10 resistance temperature detectors (RTDs) t o be OPERABLE with no two adjacent RTDs inoperable.

PBAPS UNIT 3 3.3-26 Amendment No.

ATWS - RPT I n s t rumen t a t i on 3.3.4.1 ACTIONS (continued) --

CO~DITION R E Q U I R E D ACTION CO~PLETION TIME B. One F u n c t i o n w i t h B.1 R e s t o r e ATWS-RPT t r i p 72 h o u r s ATWS - RPT t r i p capability.

c a p a b i 1 it y n o t maintained.

~

C. Both Functions w i t h c.1 R e s t o r e ATWS-RPT t r i p 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months ATWS - RPT t r ip c a p a b i l i t y f o r one capabi 1 it y n o t Function, maintained.

D.l --------NOTE---------

D. R e q u i r e d A c t i o n and associ a t e d Completion Only a p p l i c a b l e i f Time n o t met. i n o p e r a b l e channel is t h e r e s u l t o f an i n o p e r a b l e RPT breaker.

Remove t h e a f f e c t e d 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months r e c i r c u l a t i on pump from service.

0.2 Be i n MODE 2. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months SURVEILLANCE R ~ Q U I R E ~ E ~ T S

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

When a channel i s p l a c e d i n an i n o p e r a b l e s t a t u s s o l e l y f o r performance o f r e q u i r e d S u r v e i 11 ances, e n t r y i n t o a s s o c i a t e d C o n d i t i o n s and Requi r e d A c t i o n s may be d e l a y e d f o r up t o 6 h o u r s p r o v i d e d t h e a s s o c i a t e d F u n c t i o n m a i n t a i n s ATWS-RPT t r i p c a p a b i l i t y .

SURVEILLANCE FREQUE~CY SR 3.3.4.1.1 P e r f o r m CHANNEL CHECK. 12 h o u r s

( c o n t i nued 1 PBAPS UNIT 3 3.3-30 A ~ e n d m e n t No.

EOC-RPT I n s t r u m e n t a t i o n 3.3.4.2 3.3 INSTRUMENTATION 3.3.4.2 End o f C y c l e R e c i r c u l a t i o n Pump T r i p (EOC-RPT) I n s t r u m e n t a t i o n LCO 3.3.4.2 a. Two c h a n n e l s p e r t r i p system f o r each EOC-RPT i n s t r u m ~ n t a t i o n F u n c t i o n l i s t e d below s h a l l be OPERABLE:

1. T u r b i n e Stop V a l v e ( T S V ) - C l o s u r e ; and

2. T u r b i n e C o n t r o l Valve (TCV) F a s t C l o s u r e , T r i p O i l Pressure-Low.

OR

b. The f o l l o w i n g l i m i t s a r e made a p p l i c a b l e :

1. LCO 3.2.1, "AVERAGE PLANAR LINEAR HEAT G E ~ E R A T I O N RATE (APLHGR)," l i m i t s f o r i n o p e r a b l e EOC-RPT a s s p e c i f i e d i n t h e COLR; and

2. LCO 3.2.2, " M I N I M U M CRITICAL POWER RATIO ( M C P R ) , "

l i m i t s f o r i n o p e r a b l e EOC-RPT as s p e c i f i e d i n t h e COLR.

APPLICA6ILITY: THERMAL POWER 2 29.5% RTP.

COMD I T ION REQUIRED ACTION COMPLETION TIME A. One o r more r e q u i r e d A. 1 R e s t o r e channel t o 72 h o u r s channels i n o p e r a b l e . . OPERAeLE s t a t u s .

A.2 --------NOTE---------

Not a p p l i c a b l e i f i n o p e r a b l e channel i s t h e r e s u l t o f an in o p e r a b l e b r e a k e r .

P l a c e channel i n 72 h o u r s trip.

( c o n t i nued 1 PBAPS UNIT 3 3.3 -31a Amendment No.

EOC - RPT In s t rumenta t io n 3.3.4.2 COND ITIOM REQUIRED ACTION CO~PLETION T I M E B, One o r more F u n c t i o n s B.1 R e s t o r e EOC-RPT t r i p 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months w i t h EOC-RPT t r i p capability.

c a p a b i 1 it y n o t ma in t a ined .

C. R e q u i r e d A c t i o n and C.1 - - - - - - - -N O T E - - - - - - - - -

associated Completion Only a p p l i c a b l e i f Time n o t met. in o p e r a b l e c h a n n e l is t h e r e s u l t o f an i n o p e r a b l e RPT breaker.

Remove t h e a f f e c t e d 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months r e c i r c u l a t i o n pump from service.

QR c.2 Reduce THERMAL POWER 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months t o < 29.5% RTP.

SURVEILLANCE REQUIREMENTS

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

~ ~ a ec h an n n e l i s p l a c e d i n an i n o p e r a b l e s t a t u s s o l e l y f o r p e r f o r m a n c e o f r e q u i r e d S u r v e i l l a n c e s , e n t r y i n t o a s s o c i a t e d C o n d i t i o n s and R e q u i r e d A c t i o n s may be d e l a y e d f o r up t o 6 h o u r s p r o v i d e d t h e a s s o c i a t e d F u n c t i o n m a i n t a i n s EOC-RPT t r i p c a p a b i l i t y .

SR 3.3.4.2.1 P e r f o r m CHAN~EL FUNCTIO~ALTEST.

I I

92 d a y s (continued)

PBAPS UNIT 3 3.3-31b AmPnrfmPnt N n

ECCS Instrumentation 3.3.5.1 T a b l e 3 . 3 . 5 . 1 - 1 (page 1 of 5 )

Emergency Core C o o l i n g System I n s t r u m e n t a t i ~ n APPLICABLE CONDITIONS MODES REQU 1RED REFEREMCED OR OTHER CHANNELS FROM SPEC1F I ED PER REQU IRED SURVEILLANCE ALLOWABLE FUNCTION CO~DITIONS FUNCTION ACTION A . l REQUIREME~TS VALUE

1. Core Spray System

a. Reactor Vessel Water 1,2,3, 4(b) B SR 3.3.5.1.1 2 -160.0 Level-Low Low Low SR 3.3.5.1.2 inches

( L e v e l 1) 4(a), 5(a) SR 3.3.5.1.4 SR 3.3.5.1.5

b. Drywell 1,293 4(b) B SR 3.3.5.1.1 4 2.0 p s i g Press u re-H igh SR 3.3.5.1.2 SR 3.3.5.1.4 SR 3.3.5.1.5

c. Reactor Pressure-Low 1,2,3 4 c SR 3.3.5.1.1 z 425.0 p s i g

( I n j e c t i o n Permissive) SR 3.3.5.1.2 and SR 3.3.5.1.4 5 475.0 p s i g SR 3.3.5.1.5 4 B SR 3.3.5.1.1 2 425.0 p s i g SR 3.3.5.1.2 and SR 3.3.5.1.4 s 475.0 p s i g SR 3.3.5.1.5

d. Core Spray Pump 1,2.3, E SR 3.3.5.1.2 2 319.0 p s i d D i scharge F1 ow-Low SR 3.3.5.1.4 and (Bypass 1 4(a), 5(a) 5 351.0 p s i d

e. Core Spray Pump S t a r t - 1,2,3 C SR 3.3.5.1.4 2 5.0 seconds Time Delay Relay ( l o s s SR 3.3.5.1.5 and o f o f f s i t e power) 4(a), 5(a) <: 7.0 seconds

f. Core Spray Pump S t a r t -

Time Delay Relay

( o f f s i t e power a v a i 1a b l e 1 Pumps A , C 1,2,3 2 C SR 3.3.5.1.4 2 12.1 (1 p e r SR 3.3.5.1.5 seconds and 4(a), 5(a) pump) 5 13.9 seconds Pumps B,D 1,2,3 2 C SR 3.3'5.1.4 2 21.4 (1 per SR 3.3.5.1.5 seconds and 4(a), 5(a) pump) I24.6 seconds

-~

(continued)

( a ) When a s s o c i a t e d ECCS s u b s y s t e m f s ) a r e r e q u i r e d t o be OPERABLE p e r LCO 3.5.2, ECCS-~hutd~~n I

( b ) A l s o r e q u i r e d t o i n i t i a t e t h e a s s o c i a t e d d i e s e l g e n e r a t o r (DG).

PBAPS UNIT 3 3.3-39 Amendment No.

ECCS I n s t r u ~ e n t a t i o n 3.3.5.1 Table 3 . 3 . 5 . 1 - 1 (page 2 o f 5 )

Emergency Core C o o l i n g System I n s t r u m e n t a t i o n APPLICABLE CONDITIONS MODES REQUIRED REFERENCED OR OTHER CHANNELS FROM SPEC I F I ED PER REQU I RED SURVEILLANCE ALLOWABLE FUNCTION CONDITIONS FUNCTION ACTION A . l REQUIREMENTS VALUE

2. Low Pressure Coolant I n j e c t i o n (LPCI) System

a. Reactor Vessel Water 4 B SR 3.3.5.1.1 z -160 inches Level-Low Low Low SR 3.3.5.1.2

( L e v e l 1) SR 3.3.5.1.4 SR 3.3.5.1.5

b. Drywell 4 B SR 3.3.5.1.1 I 2.0 p s i g P r e $ su re-H ig h SR 3.3.5.1.2 SR 3.3.5.1.4 SR 3.3.5.1.5 C. Reactor P ressure-Low 4 C SR 3.3.5.1.1 z 425.0 p s i g

( I n j e c t ion Permi s s i ve 1 SR 3.3.5.1.2 and SR 3.3.5.1.4 4 475.0 p s i g SR 3.3.5.1.5 SR 3.3.5.1.1 z 425.0 p s i g SR 3.3.5.1.2 and SR 3.3.5.1.4 5 475.0 psig SR 3.3.5.1.5

d. Reactor P ressu re-Low SR 3.3.5.1.1 1 2 1 1 . 0 psig Low ( Reci r c u l a t i on SR 3.3.5.1.2 D i scha r g e V a l ve SR 3.3.5.1.4 Permi s s i ve 1 SR 3.3.5.1.5

e. Reactor Vessel Shroud SR 3.3.5.1.1 2 -226.0 Level-Level 0 SR 3.3.5.1.2 inches SR 3.3.5.1.4 SR 3.3.5.1.5

f. Low Pressure Cool a n t c SR 3.3.5.1.4 I n j e c t i o n Pump SR 3.3.5.1.5 Start-Time Delay Re1 ay ( o f f s i t e power a v a i lab1e 1 Pumps A,B z 1.9 seconds and I; 2 . 1 seconds Pumps C,D 2 7.5 seconds and 4 8.5 seconds

g. Low Pressure Coolant 1,2,3 4 E SR 3.3.5.1.2 z 299.0 p s i d I n j e c t i o n Pump ( 1 per SR 3.3.5.1.4 and Discharge F1 ow-Low 4 ( a ) , 5(a) pump) SR 3.3.5.1.5 s 331.0 p s i d (Bypass)

(continued)

(a) When a s s o c i a t e d ECCS subsystem(s1 a r e r e q u i r e d t o be OPERABLE per LCO 3 . 5 . 2 , ECCS-Shutdown. I (c) With a s s o c i a t e d r e c i r c u l a t i o n pump d i s c h a r g e v a l v e open.

PBAPS UNIT 3 3.3-40 Amendment No.

+ Pr i ma r y Conta i nrnent I sol a t i on I ns t rumenta t i on 3.3.6.1 3.3 I~STRUMENTATION 3.3.6.1 P r i m a r y Containment Is01 a t i on Instrumentation LCO 3.3.6.1 The primary containment i s o l a t i o n instrumentation f o r each Function in T a b l e 3.3.6.1-1 s h a l l be O P E R A B L E .

APPLICABILITY: According t o Table 3.3.6.1-1.

ACTIONS CONDITION I R E Q U I R E D ACTION I COMPLETION TIME A. One or more required A. 1 Place channel in 1 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months f o r channel s inoperable, trip. Functions l . d ,

2 . a , 2.b, 8 . a ,

a n d 8.b I 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months f o r Functions other t h a n Functions l.d, L a , 2.b, 8 . a , a n d 8.b B. One o r more Functions B.1 Restore i s o l a t i o n 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months with i s o l a t i o n capabi 1 i t y .

capability n o t maintained.

C. Required Action a n d c.1 Enter t h e Condition Immediately associated Completion referenced in Time of Condition A o r T a b l e 3.3.6.1-1 f o r B n o t met. t h e channel.

I I (continued)

PRAPS U N I T 3 3.3-48 Amendment No.

P r i m a r y C o n t a i nment I s 0 1 a t ion I n s t r u m e n t a t i o n 3.3.6.1 ACTIONS (continued)

CONDITION REQUIRED A C T I O N COMPLETION T I M E D. As r e q u i r e d by D.1 I s o l a t e associated 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Required A c t i o n C . 1 main steam l i n e and r e f e r e n c e d i n (MSL).

T a b l e 3.3.6.1-1.

0.2.1 Be i n MODE 3. 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months AXQ D.2.2 Be i n MODE 4 . 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months E. As r e q u i r e d by E.1 Be i n MODE 2. 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months Required A c t i o n C . l and r e f e r e n c e d i n T a b l e 3.3.6.1-1.

F. As r e q u i r e d by F. 1 Isolate the affected 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months Required A c t i o n C . 1 penetration f l o w and r e f e r e n c e d i n path(s).

T a b l e 3.3.6.1-1.

G. As r e q u i r e d by :. 1 Be i n MODE 3. 12 h o u r s Required A c t i o n C . 1 and r e f e r e n c e d i n INQ T a b l e 3.3.6.1-1.

i.2 Be i n MODE 4. 36 h o u r s R e q u i r e d A c t i o n and associated Completion Time o f C o n d i t i o n F o r 3 n o t met.

(continued)

PBAPS U N I T 3 3.3-49 Amendment No.

Primary Cont'ai nment Is01 a t i on Instrumentation 3.3.6.1 ACTIONS (continued)

CONDITION R E Q U I R E D ACTION C O M P L E T I O ~ TIME H. As required by H.1 Declare a s s o c i a t e d 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months Required Action C.1 standby 1 i q u i d a n d referenced i n control ( S L C )

Table 3. 3. 6. 1-1. subsystem inoperable.

OR H.2 Is01 a t e t h e Reactor 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months Water Cleanup System.

I. As required by 1.1 I n i t i a t e action t o Immediately Required Action C.1 r e s t o r e channel t o a n d referenced i n OPERABLE status.

Table 3 . 3 . 6 . 1 - 1 .

OR 1.2 I n i t i a t e action t o Immediately i s o l a t e t h e Residual Heat Removal ( R H R )

Shutdown Cooling System.

J. As required by 3.1 Isolate the affected 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months Required Action C . 1 penetration flow a n d referenced i n path(s).

Table 3 . 3 . 6 . 1 - 1 .

PBAPS U N I T 3 3.3-50 Amendment No.

Primary Containment Isolation Instrumentation 3.3.6.1 Table 3 . 3 . 6 . 1 - 1 (page 3 o f 3 )

Primary Containment I s 0 1a t ion I n s t rumen t a t ion APPLICABLE CONDITIONS MODES OR REQUIRED REFERENCED OTHER CHANNELS FROM SPECIFIED PER TRIP REQU IRED SURVEILLANCE ALLOWABLE FUNCTION CONDITIONS SYSTEM ACTION C . l REQUIREMENTS VALUE

5. Reactor Water Cleanup (RWCU) System I s o l a t i o n

a. RWCU Flow-High 1,2,3 1 F SR 3.3.6.1.1 I 125% r a t e d SR 3.3.6.1.3 f l o w (23.0 SR 3.3.6.1.7 in-wc)

b. SLC System I n i t i a t i o n 1,2 1 H SR 3.3.6.1.7 NA

c. Reactor Vessel Water 1,2,3 2 F SR 3.3.6.1.1 2 1.0 inches Level -Low ( L e v e l 3 ) SR 3.3.6.1.2 SR 3.3.6.1.5 SR 3.3.6.1.7

6. RHR Shutdown C o o l i n g System I s 0 1a t i on

a. Reactor P r e s s u r e - H i g h 1,2,3 1 SR 3.3.6.1.3 <: 70.0 p s i g SR 3.3.6.1.7

b. Reactor Vessel Water 3,4,5 2(a) SR 3.3.6.1.1 2 1.0 inches Level - Low ( Level 3 ) SR 3.3.6.1.2 SR 3.3.6.1.5 SR 3.3.6.1.7

7. Feedwater R e c i r c u l a t i o n Isolation

a. Reactor P r e s s u r e - H i g h 1,2,3 2 F SR 3.3.6.1.1 2 600 p s i g SR 3.3.6.1.2 SR 3.3.6.1.5 SR 3.3.6.1.7 8, T r a v e r s i n g I n c o r e Probe I s o l a t i on

a. Reactor Vessel Water 2 J SR 3.3.6.1.1 2 1.0 inches Level-Low ( L e v e l 3 ) SR 3.3.6.1.2 SR 3.3.6.1.5 SR 3.3.6.1.7

b. Orywell Pressure-High 1,2,3 2 J SR 3.3.6.1.1 I 2.0 p s i g SR 3.3.6.1.2 SR 3.3.6.1.5 SR 3.3.6.1.7 (a) I n MODES 4 and 5, p r o v i d e d RHR Shutdown C o o l i n g System i n t e g r i t y i s maintained, o n l y one channel per t r i p system w i t h an i s o l a t i o n s i g n a l a v a i l a b l e t o one shutdown c o o l i n g pump s u c t i o n i s o l a t i o n v a l v e i s required.

PBAPS UNIT 3 3.3-54 A ~ e n d m e ~No. t

ECCS-Operating 3.5.1 3.5 EMERGENCY CORE COOLING SYSTEMS ( E C C S ) AND REACTOR C O R E ISOLATION COOLING

( R C I C ) SYSTEM 3.5.1 ECCS-Operating LCO 3.5.1 Each ECCS i n j e c t i o n / s p r a y s u b s y s t e m and t h e A u t o m a t i c D e p r e s s u r i z a t i o n System ( A D S ) f u n c t i o n o f f i v e s a f e t y l r e l i e f v a l v e s s h a l l b e OPERABLE.

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

Low p r e s s u r e c o o l a n t i n j e c t i o n ( L P C I ) s u b s y s t e m s may b e c o n s i d e r e d OPERABLE d u r i n g a l i g n m e n t and o p e r a t i o n f o r decay h e a t r e m o v a l w i t h r e a c t o r steam dome p r e s s u r e l e s s t h a n t h e R e s i d u a l H e a t Removal ( R H R ) shutdown c o o l i n g i s 0 1 a t i o n p r e s s u r e i n MODE 3 , i f c a p a b l e o f b e i n g m a n u a l l y r e a l i g n e d and n o t o t h e r w i s e i n o p e r a b l e .

- - - - - - - - - - - - - - - - - - - - _ _ _ _ L _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - - - - - - - - - - - - - - - - - - - -

APPLICABILITY: MODE 1, MODES 2 and 3 , e x c e p t h i g h p r e s s u r e c o o l a n t i n j e c t i o n ( H P C I )

i s n o t r e q u i r e d t o b e OPERABLE w i t h r e a c t o r steam dome p r e s s u r e 2 150 p s i s and ADS v a l v e s a r e n o t r e q u i r e d t o b e OPERABLE w i t h r e a c t o r steam dome p r e s s u r e 2 100 p s i g .

COND I T IOM R E Q U I R E D ACTION COMPLETION TIME A. One l o w p r e s s u r e ECCS A.l Restore low pressure 7 days injectionfspray ECCS i n j e c t i o n / s p r a y subsystem i n o p e r a b l e . subsystem(s) t o OPERABLE s t a t u s .

One l o w p r e s s u r e coolant i n j e c t i o n

( L P C I ) pump i n each s u b s y s t e m in o p e r a b l e .

B, R e q u i r e d A c t i o n and B.1 Be i n MODE 3. 12 h o u r s a s s o c i a t e d Compl e t i on Time o f C o n d i t i o n A AND n o t met.

8.2 Be i n MODE 4. 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months

( c o n t i nued)

PBAPS UNIT 3 3.5-1 Amendment No.

ECCS- Operati n g 3.5.1 SURVEILLANCE R E Q U I R E ~ E N T S SURVEILLANCE FREQUENCY SR 3.5.1.1 Veri f y , f o r each ECCS in j e c t i on/spray 31 days subsystem, the piping i s f i l l e d with water from the pump discharge valve t o t h e i n j e c t i o n valve.

SR 3.5.1.2 Verify each ECCS i n j e c t i o n / s p r a y subsystem 31 days manual, power operated, a n d automatic valve i n the flow path, t h a t i s n o t locked, s e a l e d , or otherwi s e secured i n p o s i t i o n ,

i s in the c o r r e c t p o s i t i o n .

SR 3.5.1.3 Verify ADS nitrogen supply header pressure 31 days i s 2 85 p s i g .

SR 3.5.1.4 Verify the L P C I c r o s s t i e valve 31 days i s closed a n d power i s removed from the valve o p e r a t o r .

(continued)

PBAPS U N I T 3 3.5-4 Amendment N o .

ECCS-Shutdown 3.5.2 3.5 E M E R ~ E ~ C COREY COOLING SYSTEMS ( E C C S ) AND REACTOR CORE ISOLATION COOLING ( R C I C ) SYSTEM 3.5.2 ECCS-Shutdown LCO 3.5.2 Two l o w p r e s s u r e ECCS i n j e c t i o n / ~ ~ r asubsystems y s h a l l be OPERABLE.

APPLICABILITY: MODE 4, MORE 5, e x c e p t w i t h t h e s p e n t f u e l s t o r a g e p o o l g a t e s removed, w a t e r l e v e l 2 458 i n c h e s above r e a c t o r p r e s s u r e v e s s e l i n s t r u m e n t z e r o , and no o p e r a t i o n s w i t h a p o t e n t i a l f o r d r a i n i n g t h e r e a c t o r v e s s e l (OPDRVs) i n progress.

ACTIONS CO~DITIO~ REQUIRED A C T I O N I COMPLETION T I M E A. One r e q u i r e d ECCS A.1 R e s t o r e r e q u i r e d ECCS 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months injection/spray in j e c t i o n / s p r a y subsystem i n o p e r a b l e . subsystem t o OPERABLE status.

B. Required A c t i o n and B.1 I n i t i a t e action t o associated Completion suspend OPDRVs.

Time o f C o n d i t i o n A n o t met.

C. Two r e q u i r e d ECCS c.1 I n i t i a t e action t o Immediately in j e c t i o n / s p r a y suspend OPDRVs.

subsystems i n o p e r a b l e .

c.2 R e s t o r e one ECCS 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months injection/spray subsystem t o OPERABLE status.

(continued)

PBAPS U N I T 3 3.5-8 Amendment No.

ECCS-Shutdown 3.5.2 SURVEILLA~CE R Q U I R E M E N T S (continued)

SURVEILLANCE FREQUENCY SR 3.5.2.2 V e r i f y , f o r each r e q u i r e d c o r e s p r a y ( C S ) 12 h o u r s subsystem, t h e :

a. Suppression pool water l e v e l i s 2 11.0 f t ; o r Condensate s t o r a g e t a n k w a t e r l e v e l i s 2 17.3 f t .

SR 3.5.2.3 V e r i f y , f o r each r e q u i r e d ECCS i n j e c t i o n / 3 1 days s p r a y subsystem, t h e p i p i n g i s f i l l e d w i t h w a t e r f r o m t h e pump d i s c h a r g e v a l v e t o t h e i n j e c t i o n valve.

SR 3.5.2.4 V e r i f y each r e q u i r e d ECCS i n j e c t i o n / s p r a y 3 1 days subsystem manual, power o p e r a t e d , and automatic valve i n the flow path, t h a t i s n o t l o c k e d , s e a l e d , o r o t h e r w i s e secured i n position, i s i n the correct position.

(continued)

PBAPS U N I T 3 3.5-10 Amendment No.

Primary C o n t a i n m e n t A i r Lock 3.6.1.2 S~RVEI~LANCE REQUIRE~ENTS ( c o n t i n u e d )

SR 3.6.1.2.2 V e r i f y o n l y one d o o r i n t h e p r i m a r y 24 months c o n t a i n m e n t a i r l o c k c a n b e opened a t a time.

PBAPS UNIT 3 3.6-7 A m e n d ~ ~ nNo. t

PCIVS 3.6.1.3 ACTIONS CONDITION R ~ Q U I R E DACTION ~ O ~ P L T I OTIME N A. (continued) A.2 - - - - - - - - NOTES - - - - - - - -

1. I s o l a t i o n d e v i c e s i n high radiation a r e a s may b e v e r i f i e d by u s e o f admi n i s t r a t i ve means.

2. I s o l a t i o n d e v i c e s t h a t are locked, sealed, o r o t h e r -

w i s e s e c u r e d may b e v e r i f i e d by use o f admi n i s t r a t i v e means.

Verify the affected Once p e r 3 1 days penetration flow path for isolation i s isolated. devices o u t s i d e primary containment Prior t o e n t e r i n g ~ O 2D ~

or 3 from MODE 4, i f primary c o n t a i n m e n t was de-inerted while i n MODE 4, i f n o t performed within the previous 92 d a y s , f o r isolation d e v i c e s in s i de primary containment

( c o n t i nued 1 PBAPS UNIT 3 3.6-9 Amendment No.

PCIVs 3.6.1.3 ACT IONS (conti nued 1 B, ---------NOTE--------- ~ B.1 I s o l a t e the affected 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months On1 y a p p l i cabl e t o penetration flow p a t h penetration flow paths by use of a t l e a s t with two PCIVs. one closed and de-activated automati c val ve, One or more closed manual val ve, penetration flow p a t h s or blind flange.

with two PCIVs inoperable except f o r MSIV leakage n o t within l i m i t .

C. ---------NOTE--------- c.1 I s o l a t e the affected 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months except Only a p p l i cabl e t o penetration flow p a t h f o r excess flow penetration flow p a t h s by use of a t l e a s t check valves w i t h o n l y one P C I V . one closed a n d (EFCVs) a n d de-activated penetrations automatic Val ve, with a closed One or more c l osed manual Val ve, system penetration flow p a t h s or blind flange.

w i t h one P C I V -

AND inoperabl e ,

72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months f o r EFCVs a n d penetrations with a closed system (continued)

PBAPS UNIT 3 3.6-10 Amendment No,

PCIVS 3.6.1.3 ACTIONS CONDITION REQUIRED ACTION CO~PLETION T I M E C. (continued) c.2 _ - - - _ - - -NOTES- - - - - - - -

1. I s 0 1 a t i on d e v i ces i n high radiation a r e a s may be v e r i f i e d by use o f adrnini s t r a t i v e means.

2 . I s 0 1a t i o n d e v i c e s t h a t are locked, sealed, o r o t h e r w i s e secured may be v e r i f i e d by use o f admi n i s t r a t i ve means.

Verify the affected Once p e r 3 1 days penetration f l o w path f o r isol a t i on i s isolated. devices outside primary containment AND Prior t o e n t e r i n g MODE 2 o r 3 from MODE 4 , i f primary c o n t a i n m e n t was de-inerted while i n MODE 4, i f n o t performed within the previous 92 days, f o r is o l a t i on d e v i c e s in s i de primary containment D. One o r more I D.1 Restore leakage r a t e 3 hours3.472222e-5 days 8.333333e-4 hours 4.960317e-6 weeks 1.1415e-6 months p e n e t r a t i o n f l o w paths t o within l i m i t .

w i t h one o r more MSIVs not within MSIV leakage r a t e l i m i t s .

( c o n t i nued 1 PBAPS UNIT 3 3.6-11 Amendment No.

PCIVS 3.6.1.3 S U R V E I L ~ A N C E R E Q U I R E ~ E N T S (continuedl FREQ~ENCY SR 3.6.1.3-3 ------------------NOTE-------------------

Not required t o be met when t h e 6 inch or 18 inch primary containment purge a n d 18 inch primary containment exhaust valves a r e open f o r i n e r t i n g , d e - i n e r t i n g ,

pressure c o n t r o l , ALARA or a i r q u a l i t y c o n s i d e r a t i o n s f o r personnel e n t r y , or S u r v e i l l a n c e s t h a t r e q u i r e the valves t o be open.

Verify each 6 inch a n d 18 inch primary 31 days containment purge valve a n d each 18 inch primary containment exhaust valve i s cl osed.

2. Not required t o be met f o r PCIVs t h a t a r e open under a d m i n i s t r a t i v e control s .

3. Not required t o be performed f o r t e s t t a p s with a diameter I 1 inch.

Verify each primary containment i s o l a t i o n 31 days m a n u a l valve a n d blind f l a n g e t h a t i s located o u t s i d e primary containment a n d n o t locked, s e a l e d , or otherwise secured a n d i s required t o be closed during accident condi t i o n s i s cl osed.

(continued)

PBAPS UNIT 3 3.6-13 Amendment No.

PCIVS 3.6.1.3 SURVEILLANCE FREQUENCY V e r i f y e a c h p r i m a r y c o n t a i n m e n t manual Prior t o i s o l a t i o n v a l v e and b l i n d f l a n g e t h a t i s e n t e r i n g MODE 2 l o c a t e d i n s i d e p r i m a r y c o n t a i n m e n t and n o t locked, sealed, o r otherwise secured and i s r e q u i r e d t o b e c l o s e d d u r i n g o r 3 from MODE 4 i f primary I

a c c i d e n t c o n d i t i ons is c l osed. c o n t a i n m e n t was de-inerted while i n MODE 4, i f n o t p e r f ormed within the previous 92 d a y s SR 3.6.1.3.6 Verify continuity o f the traversing 3 1 days i n c o r e probe (TIP) shear i s o l a t i o n v a l v e e x p l o s i v e charge.

SR 3.6.1.3.7 V e r i f y e a c h SGIG System manual v a l v e i n 3 1 days t h e f l o w p a t h s s e r v i c i n g t h e 6 and 18 i n c h p r i m a r y c o n t a i n m e n t p u r g e v a l v e s and t h e 18 i n c h p r i m a r y c o n t a i n m e n t exhaust valves, t h a t i s n o t locked, sealed, o r otherwise secured i n p o s i t i o n ,

i s i n the correct position.

(continued)

PBAPS UNIT 3 3.6-14 Amendment No.

PCIVS 3.6.1.3 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.6.1.3.8 V e r i f y t h e i s o l a t i o n t i m e o f each a u t o m a t i c power o p e r a t e d P C I V , e x c e p t f o r MSIVs, i s w i t h i n l i m i t s .

I n accordance with the Inservice I

T e s t i n g Program SR 3.6.1.3.9 V e r i f y t h e i s o l a t i o n t i m e o f each MSIV i s I n accordance 2: 3 seconds and 5 5 seconds, with the I n s e r v ice T e s t i n g Program SR 3.6.1.3.10 V e r i f y each a u t o m a t i c P C I V a c t u a t e s t o 24 months t h e i s o l a t i o n p o s i t i o n on an a c t u a l o r simulated i s o l a t i o n signal.

SR 3.6.1.3.11 V e r i f y a r e p r e s e n t a t i v e sample o f r e a c t o r 24 months i n s t r u m e n t a t i o n l i n e EFCVs a c t u a t e s t o t h e i s o l a t i o n p o s i t i o n on a s i m u l a t e d instrument l i n e break s i g n a l .

SR 3.6.1.3.12 Remove and t e s t t h e e x p l o s i v e s q u i b f r o m 24 months on a each shear i s o l a t i o n v a l v e o f t h e T I P STAGGERED TEST System. BASIS SR 3.6.1.3.13 V e r i f y t h e CAD System s u p p l i e s n i t r o g e n 24 months t o t h e S G I G System upon l o s s o f t h e normal a i r s u p p l y .

( c o n t inued 1 PBAPS UNIT 3 3.6-15 Amendment No.

Secondary Containment 3.6.4.1 ACTIONS CONDITION REQUIRED ACTION COMPLETION T I M E C. (continued) c.2 Suspend CORE Immed ia t e l y ALTERATIONS.

ecdcl c.3 I n i t i a t e action t o Immediately suspend OPDRVs.

SURVEILLANCE FREQUENCY SR 3.6.4.1.1 V e r i f y a l l secondary c o n t a i n m e n t 3 1 days equipment h a t c h e s a r e c l o s e d and s e a l e d .

SR 3.6.4.1.2 V e r i f y one secondary c o n t a i n m e n t access 3 1 days d o o r i n each access o p e n i n g i s c l o s e d .

SR 3.6.4.1.3 V e r i f y secondary c o n t a i n m e n t can be drawn 24 months on a down t o 2 0.25 i n c h o f vacuum w a t e r gauge STAGGERED TEST i n s 120 seconds u s i n g one standby gas B A S I S f o r each t r e a t m e n t ( S G T ) subsystem. s ubsys t em SR 3.6.4.1.4 V e r i f y t h e secondary c o n t a i n m e n t can be 24 months on a m a i n t a i n e d 2 0.25 i n c h o f vacuum w a t e r STAGGERED TEST gauge f o r 1 h o u r using one SGT subsystem B A S I S f o r each a t a f l o w r a t e 5 10,500 cfm. subsystem PBAPS U N I T 3 3.6-35 Amendment No.

SCIVS 3.6.4.2 ACTIONS CONDITION R E Q U I ~ E DACTION COMPLETION T I M E A. (continued) A.2 - - - - - - - -NOTES--------

1. I s o l a t i o n d e v i c e s i n high radiation a r e a s may b e v e r i f i e d by use o f admi n i s t r a t i ve means.

2. I s o l a t i o n d e v i c e s that are locked, sealed, o r o t h e r -

w i s e s e c u r e d may be v e r i f i e d by u s e o f administrative means.

Verify the affected Once p e r 3 1 days penetration flow path i s isolated.

B. ---------NOTE--------- B.1 Isolate the affected 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months Only a p p l i c a b l e t o penetration flow path penetration flow paths b y use o f a t l e a s t w i t h two i s o l a t i o n one c l o s e d and V a l ves. de - a c t iv a t ed

...................... automatic valve, c l osed manual Val v e ,

One o r more or b l i n d flange.

penetration flow paths w i t h two S C I V s inoperable.

C. R e q u i r e d A c t i o n and c.1 Be i n MODE 3. 12 h o u r s associated Completion Time o f C o n d i t i o n A ANfl o r B n o t met i n MODE I , 2, or 3. C.2 Be i n MODE 4. 36 h o u r s (continued) 3 c '17 Amonrtmonf Nn

SCIVS 3.6.4.2 S U R V E I L L A N C E REQUIRE~ENTS SURVEILLANCE FREQ~ENCY

2. Not required t o be met f o r SCIVs t h a t a r e open under admini s t r a t i ve controls.

Verify each secondary containment 31 days i s o l a t i o n manual valve a n d blind f l a n g e t h a t i s n o t locked, s e a l e d , or otherwise secured a n d i s required t o be closed during accident conditions i s cl osed.

SR 3.6.4.2.2 Verify the i s o l a t i o n time of each power I n accordance operated automatic SCIV i s within l i m i t s . with t h e I Inservice Testing Program SR 3.6.4.2.3 Verify each automatic SCIV a c t u a t e s t o 24 months t h e i s o l a t i o n p o s i t i o n on a n actual or simulated a c t u a t i o n s i g n a l ,

PBAPS UNIT 3 3.6-39 Amendment No.

A C Sources-Operating 3.8.1 SURVEILLANCE FREQUENCY SR 3.8.1.9 ------------------NOTES--------------------

1. If performed with the DG synchronized with o f f s i t e power, i t shall be performed a t a power f a c t o r 5 0.89.

However, i f grid conditions d o n o t permit, the power f a c t o r l i m i t i s n o t required t o be met. Under t h i s condition, the power f a c t o r shall be maintained as close t o the l i m i t as practicable.

2. A single t e s t a t the specified Frequency w i 1 1 s a t i sfy t h i s Surveillance f o r b o t h u n i t s .

Verify each DG r e j e c t s a l o a d g r e a t e r t h a n 24 months or equal t o i t s associated s i n g l e l a r g e s t post-accident load, a n d :

a. Following load r e j e c t i o n , the frequency i s -I 6 6 . 7 5 Hz;

b. Within 1.8 seconds following l o a d r e j e c t i o n , the voltage i s r. 3750 V a n d I 4570 V, a n d a f t e r steady s t a t e conditions are reached, maintains voltage 2. 4160 V a n d 2 4400 V ; a n d

c. Within 2.4 seconds following l o a d r e j e c t i o n , the frequency i s 2 58.8 Hz a n d I 61.2 Hz.

SR 3.8.1.10 - - - - - _ - _ - - - - - - - - - N- O T E S - - - - - - - - - - - - - - - - - - - -

1. If performed with the DG synchronized with o f f s i t e power, i t shall be performed a t a power f a c t o r 2 0.89.

However, i f grid conditions d o n o t permit, the power f a c t o r l i m i t i s n o t required t o be met. Under t h i s condition, the power f a c t o r shall be maintained as close t o the l i m i t as practicable.

2. A single t e s t a t the specified Frequency wi 1 1 s a t i sfy t h i s Survei 1 1 ance f o r both units.

Verify each DG does n o t t r i p a n d voltage i s 24 months maintained 2 5230 V during a n d following a l o a d rejection of 2 2400 kW a n d I 2800 kW.

I (conti nued)

PBAPS U N I T 3 3.8-10 Amendment No.

AC S o u r c e s - O p e r a t i n g 3.8.1 S~RVEILLANCE FREQUENCY

2. I f p e r f o r m e d w i t h DG s y n c h r o n i z e d w i t h o f f s i t e power, i t s h a l l be performed a t a power f a c t o r s 0.89. However, i f g r i d c o n d i t i o n s do n o t p e r m i t , t h e power f a c t o r l i m i t i s n o t r e q u i r e d t o b e m e t . Under t h i s c o n d i t i o n , t h e power f a c t o r s h a l l b e m a i n t a i n e d as c l o s e t o t h e l i m i t as p r a c t i c a b l e .

V e r i f y each DG o p e r a t e s f o r 2 24 h o u r s : 24 months

a. F o r 2 2 h o u r s l o a d e d 2 2800 kW and s 3000 kW; and

b. For t h e remaining hours o f t h e t e s t l o a d e d 2 2400 kW and s 2800 kW.

~-

(continued)

PBAPS UNIT 3 3.8-14 Amendment No.

Responsi b i 1 it y 5.1 5.0 ADMINISTRA~IVE CONTROLS 5.1 Responsi b i 1 it y 5.1.1 The p l a n t manager s h a l l b e r e s p o n s i b l e f o r o v e r a l l u n i t o p e r a t i o n I and s h a l l d e l e g a t e i n w r i t i n g t h e s u c c e s s i o n t o t h i s r e s p o n s i b i l i t y d u r i n g h i s absence.

The p l a n t manager o r h i s d e s i g n e e s h a l l a p p r o v e , p r i o r t o I i m p l e m e n t a t i o n , e a c h p r o p o s e d t e s t , e x p e r i m e n t , or m o d i f i c a t i o n t o systems o r equipment t h a t a f f e c t n u c l e a r s a f e t y .

5.1.2 The S h i f t S u p e r v i s o r s h a l l be r e s p o n s i b l e f o r t h e c o n t r o l room command f u n c t i o n . D u r i n g any absence o f t h e S h i f t Superv s o r f r o m t h e c o n t r o l room w h i l e t h e un t i s i n MODE 1, 2, o r 3, an i n d i v i d u a l w i t h an a c t i v e Sen o r R e a c t o r O p e r a t o r ( S R O ) 1 cense s h a l l b e d e s i g n a t e d t o assume t h e c o n t r o l room command f u n c t i o n .

D u r i n g any absence o f t h e S h i f t S u p e r v i s o r f r o m t h e c o n t r o l room w h i l e t h e u n i t i s i n MODE 4 o r 5 , an i n d i v i d u a l w i t h an a c t i v e SRO l i c e n s e o r R e a c t o r O p e r a t o r l i c e n s e s h a l l b e d e s i g n a t e d t o assume t h e c o n t r o l room command f u n c t i o n .

PBAPS UNIT 3 5.0-1 Amendment No.

Organization 5.2 5.0 A D ~ I ~ I S T R A T I V CONTROLS E

5.2 Organization 5.2.1 O n s i t e and o f f s i t e o r g a n i z a t i o n s s h a l l be e s t a b l i s h e d f o r u n i t o p e r a t i o n and c o r p o r a t e management, r e s p e c t i v e l y . The o n s i t e and o f f s i t e organizations shall include the positions f o r a c t i v i t i e s a f f e c t i n g s a f e t y o f t h e n u c l e a r power p l a n t .

a. L i n e s o f a u t h o r i t y , r e s p o n s i b i l i t y , and communication s h a l l

be d e f i n e d and e s t a b l i s h e d t h r o u g h o u t h i g h e s t management l e v e l s , i n t e r m e d i a t e l e v e l s , and a l l o p e r a t i n g o r g a n i z a t i o n p o s i t i o n s . These r e l a t i o n s h i p s s h a l l be documented and updated, as a p p r o p r i a t e , i n o r g a n i z a t i o n c h a r t s , f u n c t i o n a l d e s c r i p t i o n s o f d e p a r t m e n t a l r e s p o n s i b i l i t i e s and r e l a t i o n s h i p s , and j o b d e s c r i p t i o n s f o r key p e r s o n n e l p o s i t i o n s , o r i n e q u i v a l e n t forms o f documentation. These requirements, i n c l u d i n g t h e p l a n t - s p e c i f i c t i t l e s o f those personnel f u l f i l l i n g t h e r e s p o n s i b i l i t i e s o f t h e p o s i t i o n s d e l i n e a t e d i n t h e s e T e c h n i c a l S p e c i f i c a t i o n s , s h a l l be documented i n t h e UFSAR;

b. The p l a n t manager s h a l l be r e s p o n s i b l e f o r o v e r a l l s a f e o p e r a t i o n o f t h e p l a n t and s h a l l have c o n t r o l o v e r t h o s e o n s i t e a c t i v i t i e s necessary f o r s a f e o p e r a t i o n and maintenance o f t h e p l a n t ;

C. The s p e c i f i e d c o r p o r a t e o f f i c e r s h a l l have c o r p o r a t e r e s p o n s i b i 1 it y f o r o v e r a l l p l a n t n u c l e a r s a f e t y and s h a l l t a k e any measures needed t o ensure a c c e p t a b l e performance o f t h e s t a f f i n o p e r a t i n g , m a i n t a i n i n g , and p r o v i d i n g t e c h n i c a l s u p p o r t t o t h e p l a n t t o ensure n u c l e a r s a f e t y ; and

d. The i n d i v i d u a l s who t r a i n t h e o p e r a t i n g s t a f f , c a r r y o u t h e a l t h p h y s i c s , o r p e r f o r m q u a l i t y assurance f u n c t i o n s may r e p o r t t o t h e a p p r o p r i a t e o n s i t e manager; however, t h e s e i n d i v i d u a l s s h a l l have s u f f i c i e n t o r g a n i z a t i o n a l freedom t o ensure t h e i r independence f r o m o p e r a t i n g p r e s s u r e s .

5.2.2 Yni t S t a f f The u n i t s t a f f o r g a n i z a t i o n s h a l l a l s o i n c l u d e t h e f o l l o w i n g :

( c o n t inued 1 PBAPS U N I T 3 5.0-2 A m e n d ~ e n t No.

Organi z a t i on 5.2 5.2 Organization 5.2.2 Unit S t a f f (continued)

The c o n t r o l s s h a l l i n c l u d e g u i d e l i n e s on w o r k i n g h o u r s t h a t e n s u r e adequate s h i f t coverage s h a l l be m a i n t a i n e d w i t h o u t r o u t i n e heavy use o f o v e r t i m e .

Any d e v i a t i o n f r o m t h e above g u i d e l i n e s s h a l l be a u t h o r i z e d i n advance by t h e p l a n t manager o r t h e p l a n t managers d e s i g n e e , i n accordance w i t h approved admi n i s t r a t i ve p r o c e d u r e s , and w i t h d o c u m e n t a t i o n o f t h e b a s i s f o r g r a n t i n g the deviation. Routine d e v i a t i o n from t h e working hour g u i d e 1 ines s h a l l n o t be a u t h o r i zed.

C o n t r o l s s h a l l be i n c l u d e d i n t h e p r o c e d u r e s t o r e q u i r e a p e r i o d i c i n d e p e n d e n t r e v i e w be conducted t o e n s u r e t h a t e x c e s s i v e h o u r s have n o t been a s s i g n e d .

e. The s e n i o r o p e r a t i o n s manager o r an o p e r a t i o n s manager s h a l l I h o l d an SRO l i c e n s e .

f. An i n d i v i d u a l s h a l l p r o v i d e a d v i s o r y t e c h n i c a l s u p p o r t t o t h e u n i t o p e r a t i o n s s h i f t crew i n t h e a r e a s o f t h e r m a l h y d r a u l ics, r e a c t o r e n g i n e e r i ng, and p l a n t a n a l y s i s w i t h regard t o the safe operation o f the u n i t . This i n d i v i d u a l s h a l l meet t h e q u a l i f i c a t i o n s s p e c i f i e d by t h e Commission P o l i c y Statement on E n g i n e e r i n g E x p e r t i s e on S h i f t .

PBAPS U N I T 3 5.0-4 Amendment No.

Programs and Manuals 5.5 5.0 ADMINISTRATIVE CONTROLS 5.5 Programs and Manuals The f o l l o w i n g programs s h a l l be e s t a b l i s h e d , i m p l e m e n t e d , and m a i n t a i n e d .

5.5.1 g f f s i t e Dose Ca 1 cu1 a t i o n Manual (ODCM)

a. The ODCM s h a l l c o n t a i n t h e m e t h o d o l o g y and p a r a m e t e r s used i n t h e c a l c u l a t i o n o f o f f s i t e doses r e s u l t i n g f r o m r a d i o a c t i v e gaseous and l i q u i d e f f l u e n t s , i n t h e c a l c u l a t i o n o f gaseous and l i q u i d e f f l u e n t m o n i t o r i n g a l a r m and t r i p s e t p o i n t s , and i n t h e c o n d u c t o f t h e r a d i o l o g i c a l e n v i r o n m e n t a l m o n i t o r i n g program; and

b. The ODCM s h a l l a l s o c o n t a i n t h e r a d i o a c t i v e e f f l u e n t c o n t r o l s and r a d i o l o g i c a l e n v i r o n m e n t a l m o n i t o r i n g a c t i v i t i e s , and d e s c r i p t i o n s o f t h e i n f o r m a t i o n t h a t s h o u l d be i n c l u d e d i n t h e Annual R a d i o l o g i c a l E n v i r o n m e n t a l O p e r a t i n g , and R a d i o a c t i v e E f f l u e n t Release r e p o r t s r e q u i r e d by S p e c i f i c a t i o n 5.6.2 and S p e c i f i c a t i o n 5.6.3.

c. L i c e n s e e i n i t i a t e d changes t o t h e ODCM:

1. S h a l l be documented and r e c o r d s o f r e v i e w s p e r f o r m e d s h a l l be r e t a i n e d . T h i s d o c u m e n t a t i o n s h a l l c o n t a i n :

S u f f i c i e n t information t o support t h e changeb) t o g e t h e r w i t h t h e a p p r o p r i a t e analyses o r e v a l u a t i o n s j u s t i f y i n g t h e c h a n g e b ) , and A determination t h a t the changeb) maintain the levels o f r a d i o a c t i v e e f f l u e n t c o n t r o l r e q u i r e d by 10 CFR 20.1302, 40 CFR 190, 10 CFR 50.36a, and 10 CFR 50, Appendix I , and n o t a d v e r s e l y i m p a c t t h e a c c u r a c y o r r e l i a b i l i t y o f e f f l u e n t , dose, o r s e t p o i n t c a l c u l a t i ons ;

2. S h a l l become e f f e c t i v e a f t e r r e v i e w and a c c e p t a n c e by t h e P l a n t O p e r a t i o n s Review Committee and t h e a p p r o v a l o f t h e p l a n t manager; and I PBAPS UNIT 3 5.0-7 Amendment No.

Programs a n d Manuals 5.5 5.5 Programs a n d Manuals 5.5.1 Offsi t e Dose Calculation Manual (ODCM) (continued)

3. S h a l l be submitted t o t h e NRC in t h e form of a complete, l e g i b l e copy of the e n t i r e ODCM as a p a r t of or concurrent with the Radioactive Eff 1 uent Re1 ease Report f o r the period of the r e p o r t in which any change i n the ODCM was made. Each change s h a l l be i d e n t i f i e d by markings in t h e margin o f the a f f e c t e d pages, c l e a r l y i n d i c a t i n g the area of t h e page t h a t was changed, a n d s h a l l i n d i c a t e the d a t e ( i . e . , m o n t h a n d y e a r ) t h e change was implemented.

5.5.2 Primary Cool a n t Sources Outside Containment This program provides c o n t r o l s t o minimize leakage from those p o r t i o n s of systems o u t s i d e containment t h a t could contain highly r ad i o act i v e f l u i d s during a s e r i o u s t r a n s i e n t or accident t o l e v e l s as low as p r a c t i c a b l e . The systems include Core Spray, High Pressure C o o l a n t I n j e c t i o n , Residual Heat Removal, Reactor Core I s o l a t i o n Cooling, a n d Reactor Water Cleanup. The program sh al l include t h e following:

a. Preventi ve mai ntenance a n d periodic vi sual inspection requirements; a n d

b. System leak t e s t requirements f o r each system, t o t h e e xt e n t permitted by system design a n d radiological c o n d i t i o n s , a t l e a s t once per 24 months. The provisions of SR 3 . 0 . 2 a r e appl i cab1 e . I 5.5.3 DELETED PBAPS UNIT 3 5.0-8 Amendment No.

Programs and Manuals 5.5 5.5 Programs and M a n u a l s (continued) 5.5.6 I n s e r v i c e T e s t i n g Prosram T h i s p r o g r a m p r o v i d e s c o n t r o l s f o r i n s e r v i c e t e s t i n g o f ASME Code C l a s s 1, 2, and 3 components. The p r o g r a m s h a l l i n c l u d e t h e I following:

a. T e s t i n g f r e q u e n c i e s s p e c i f i e d i n S e c t i o n X I o f t h e ASME B o i l e r and P r e s s u r e V e s s e l Code and a p p l i c a b l e Addenda a r e as f o l l o w s :

ASME B o i l e r and P r e s s u r e V e s s e l Code and a p p l icab1 e Addenda t e r m i no1 ogy f o r Requi r e d F r e q u e n c i e s inservice testing f o r p e r f o r m i n g in s e r v i c e a c t iv i t i es t e s t i n s a c ti v i t i e s Weekly A t l e a s t once p e r 7 d a y s Monthly A t l e a s t once p e r 3 1 d a y s Q u a r t e r l y o r every 3 months A t l e a s t once p e r 92 d a y s Semiannually o r e v e r y 6 months A t l e a s t once p e r 184 d a y s E v e r y 9 months A t l e a s t once p e r 276 d a y s Yearly o r annually A t l e a s t once p e r 366 d a y s B i e n n i a l l y o r every 2 years A t l e a s t once p e r 732 d a y s

b. The p r o v i s i o n s o f SR 3.0.2 a r e a p p l i c a b l e t o t h e F r e q u e n c i e s f o r performing inservice t e s t i n g a c t i v i t i e s ;

c. The p r o v i s i o n s o f SR 3.0.3 are applicable t o inservice t e s t i n g a c t i v i t i e s ; and

d. N o t h i n g i n t h e ASME B o i l e r and P r e s s u r e V e s s e l Code s h a l l b e c o n s t r u e d t o s u p e r s e d e t h e r e q u i r e m e n t s o f any TS.

5.5.7 Y e n t i l a t i o n F i l t e r T e s t i n u Program (VFTP)

The VFTP s h a l l e s t a b l i s h t h e r e q u i r e d t e s t i n g o f E n g i n e e r e d S a f e t y F e a t u r e (ESF) f i l t e r v e n t i l a t i o n s y s t e m s .

T e s t s d e s c r i b e d i n S p e c i f i c a t i o n s 5.5.7.a, 5.5.7.b, and 5.5.7.c s h a l l be performed:

(continued 1 PBAPS UNIT 3 5.0-11 Amendment No.

Programs and Manuals 5.5 5.5 Programs and Manuals 5.5.9 D i e s e l Fuel Oil T e s t i n q Proqram (continued)

a. A c c e p t a b i l i t y o f new f u e l o i l f o r use p r i o r t o a d d i t i o n t o s t o r a g e t a n k s by d e t e r m i n i n g t h a t t h e f u e l o i l has:

1. an A P I g r a v i t y o r an a b s o l u t e s p e c i f i c g r a v i t y w i t h i n limits, 2, k i n e m a t i c v i s c o s i t y , when r e q u i r e d , and a f l a s h p o i n t w i t h i n l i m i t s f o r ASTM 2 - 0 f u e l o i l , and

3. a c l e a r and b r i g h t appearance w i t h p r o p e r c o l o r o r a w a t e r and sediment c o n t e n t w i t h i n l i m i t s ;

b. W i t h i n 3 1 days f o l l o w i n g a d d i t i o n o f t h e new f u e l o i l t o s t o r a g e t a n k s , v e r i f y t h a t t h e p r o p e r t i e s o f t h e new f u e l o i l ,

o t h e r t h a n t h o s e addressed i n a . above, a r e w i t h i n l i m i t s f o r ASTM 20 f u e l o i l ; and

c. T o t a l p a r t i c u l a t e c o n c e n t r a t i o n o f t h e f u e l o i l i s 5 10 mg/l when t e s t e d e v e r y 3 1 days i n accordance w i t h ASTM 02276, Method A, e x c e p t t h a t t h e f i l t e r s s p e c i f i e d i n t h e ASTM method may have a nominal p o r e s i z e o f up t o t h r e e ( 3 )

microns.

The p r o v i s i o n s o f SR 3.0.2 and SR 3.0.3 a r e a p p l i c a b l e t o t h e D i e s e l Fuel O i 1 T e s t i n g Program t e s t i n g f r e q u e n c i e s . I 5.5.10 T e c h n i c a l S p e c i f i c a t i o n s ( T S ) Bases C o n t r o l Proqram T h i s program p r o v i d e s a means f o r p r o c e s s i n g changes t o t h e Bases o f these Technical S p e c i f i c a t i o n s .

a. Changes t o t h e Bases o f t h e TS s h a l l be made under a p p r o p r i a t e a d m i n i s t r a t i v e c o n t r o l s and r e v i e w s .

b. L i c e n s e e s may make changes t o Bases w i t h o u t p r i o r NRC a p p r o v a l p r o v i d e d t h e changes do n o t i n v o l v e e i t h e r o f t h e following:

A change i n t h e TS i n c o r p o r a t e d i n t h e l i c e n s e ; o r A change t o t h e UFSAR o r Bases t h a t r e q u i r e s NRC a p p r o v a l p u r s u a n t t o 10 CFR 50.59.

c. The Bases C o n t r o l Program s h a l l c o n t a i n p r o v i s i o n s t o e n s u r e t h a t t h e Bases a r e m a i n t a i n e d c o n s i s t e n t w i t h t h e UFSAR.

( c o n t i nued PBAPS UNIT 3 5.0-15 Amendment No.

Reporting Requirements 5.6 5.6 Reporting Requirements 5.6.2 (conti nued 1 The A n n u a l Radiological ~nvironmental Operating Report s h a l l include the r e s u l t s of analyses of a1 1 radiological envi ronmental samples a n d o f a l l environmental radiation measurements taken during the period pursuant t o the locations specified i n the t a b l e a n d f i g u r e s i n the ODCM, as well as summarized a n d tabulated r e s u l t s o f these analyses a n d measurements i n the format of the t a b l e i n the Radiological Assessment Branch Technical Position, Revision 1, November 1979. I n the event t h a t some i n d i v i d u a l r e s u l t s are n o t a v a i l a b l e f o r inclusion w i t h t h e r e p o r t , t h e report s h a l l be submitted n o t i n g a n d explaining the reasons for the missing r e s u l t s . The missing d a t a s h a l l be submitted i n a supplementary report as soon as possi b l e .

5.6.3 Radioact ive Effluent Release Report The Radioactive Effluent Release Report covering the operation o f the u n i t during the previous year shall be submitted p r i o r t o May 1 o f each year i n accordance w i t h 1 0 C F R 50.36a. The report shall include a summary of the q u a n t i t i e s o f radioactive l i q u i d a n d gaseous e f f l u e n t s a n d s o l i d waste released from the u n i t . The material provided s h a l l be consistent w i t h the objectives outlined i n the ODCM a n d Process Control Program a n d i n conformance w i t h 10 C F R 50.36a a n d 10 C F R Part 5 0 , Appendix I ,Section I V . B . l . I 5.6.4 Defclted

( c o n t i nued 1 PBAPS UNIT 3 5.0-20 Amendment No.

R e a c t o r Core SLs B 2.1.1 BASES (continued)

SAFETY LIMITS The r e a c t o r c o r e SLs a r e e s t a b l i s h e d t o p r o t e c t t h e i n t e g r i t y o f the fuel clad b a r r i e r t o the release o f r a d i o a c t i v e m a t e r i a l s t o t h e e n v i r o n s . SL 2.1.1.1 and SL 2.1.1.2 e n s u r e t h a t t h e c o r e o p e r a t e s w i t h i n t h e f u e l design c r i t e r i a . SL 2 . 1 . 1 . 3 e n s u r e s t h a t t h e r e a c t o r v e s s e l water l e v e l i s g r e a t e r than t h e t o p o f t h e a c t i v e i r r a d i a t e d f u e l i n o r d e r t o p r e v e n t e l e v a t e d c l a d t e m p e r a t u r e s and r e s u l t a n t c l ad p e r f o r a t i o n s .

APPLI CAB I L I TY SLs 2.1.1.1, 2.1.1.2, and 2.1.1.3 are applicable i n a l l MODES.

SAFETY L I M I T VIOLATIO~S E x c e e d i n g an SL may c a u s e f u e l damage and c r e a t e a p o t e n t i a l f o r r a d i o a c t i v e r e l e a s e s i n e x c e s s o f 10 CFR 100, " R e a c t o r S i t e C r i t e r i a , " l i m i t s (Ref. 3). Therefore, i t i s required I t o i n s e r t a l l i n s e r t a b l e c o n t r o l r o d s and r e s t o r e c o m p l i a n c e w i t h t h e SLs w i t h i n 2 h o u r s . The 2 h o u r C o m p l e t i o n Time e n s u r e s t h a t t h e o p e r a t o r s t a k e p r o m p t r e m e d i a l a c t i o n and a l s o e n s u r e s t h a t t h e p r o b a b i l i t y o f an a c c i d e n t o c c u r r i n g during t h i s period i s minimal.

PBAPS U N I T 3 B 2.0-5 R e v i s i o n No.

Reactor Core SLs B 2.1.1 BASES REFERENCES 1. DELETED

2. NEDE-24011-P-A, General E l e c t r i c S t a n d a r d A p p l i c a t i o n f o r R e a c t o r F u e l , 1 a t e s t a p p r o v e d r e v i s i o n .

3. 10 C F R 100.

PBAPS UNIT 3 6 2.0-6 R e v i s i o n No.

RCS P r e s s u r e SL B 2.1.2 BASES APPLICABLE The RCS p r e s s u r e SL has been s e l e c t e d such t h a t i t i s a t a SAFETY ANALYSES p r e s s u r e b e l o w w h i c h i t can be shown t h a t t h e i n t e g r i t y o f

( c o n t i nued 1 t h e system i s n o t endangered. The r e a c t o r p r e s s u r e v e s s e l i s d e s i g n a t e d t o S e c t i o n 111, 1965 E d i t i o n o f t h e ASME, B o i l e r and P r e s s u r e Vessel Code, i n c l u d i n g Addenda t h r o u g h t h e summer o f 1966 ( R e f . 51, w h i c h p e r m i t s a maximum p r e s s u r e t r a n s i e n t o f llOX, 1375 p s i g , o f d e s i g n p r e s s u r e 1250 p s i g . The SL o f 1325 p s i g , as measured i n t h e r e a c t o r steam dome, i s e q u i v a l e n t t o 1375 p s i g a t t h e l o w e s t e l e v a t i o n o f t h e RCS. The RCS i s d e s i g n e d t o ASME S e c t i o n 111, i n c l u d i n g Addenda t h r o u g h t h e w i n t e r o f 1981 ( R e f . 61, f o r t h e r e a c t o r r e c i r c u l a t i o n p i p i n g , which p e r m i t s a maximum p r e s s u r e t r a n s i e n t o f 110% o f d e s i g n p r e s s u r e s o f 1250 p s i g f o r s u c t i o n p i p i n g and 1500 p s i s f o r d i s c h a r g e p i p i n g . The RCS p r e s s u r e SL i s s e l e c t e d t o be t h e l o w e s t t r a n s i e n t o v e r p r e s s u r e a l l o w e d by t h e a p p l i c a b l e codes.

SAFETY LIMITS The maximum t r a n s i e n t p r e s s u r e a1 1 owabl e i n t h e RCS p r e s s u r e v e s s e l under t h e ASME Code, S e c t i o n 111, i s 110% o f d e s i g n p r e s s u r e . The maximum t r a n s i e n t p r e s s u r e a l l o w a b l e i n t h e RCS p i p i n g , v a l v e s , and f i t t i n g s i s 110% o f d e s i g n p r e s s u r e s o f 1250 p s i g f o r s u c t i o n p i p i n g and 1500 p s i g f o r d i s c h a r g e p i p i n g . The most l i m i t i n g o f t h e s e a l l o w a n c e s i s t h e 110%

o f d e s i g n p r e s s u r e s o f 1250 p s i g ; t h e r e f o r e , t h e SL on maximum a l l o w a b l e RCS p r e s s u r e i s e s t a b l i s h e d a t 1325 p s i g as measured a t t h e r e a c t o r steam dome.

APPLICABILITY SL 2 . 1 . 2 a p p l i e s i n a l l MODES.

SAFETY LIMIT I V I 0 LAT I ONS (continued)

PBAPS U N I T 3 B 2.0-8 R e v i s i o n No.

RCS P r e s s u r e SL B 2.1.2 BASES SAFETY L I M I T I V I0LAT I ON S (continued) E x c e e d i n g t h e RCS p r e s s u r e SL may c a u s e i m m e d i a t e RCS f a i l u r e and c r e a t e a p o t e n t i a l f o r r a d i o a c t i v e r e l e a s e s i n e x c e s s o f 10 CFR 100, " R e a c t o r S i t e C r i t e r i a , " l i m i t s (Ref. 4 ) . Therefore, i t i s r e q u i r e d t o i n s e r t a l l i n s e r t a b l e c o n t r o l r o d s and r e s t o r e c o m p l i a n c e w i t h t h e SL w i t h i n 2 h o u r s . The 2 h o u r C o m p l e t i o n Time e n s u r e s t h a t t h e o p e r a t o r s t a k e p r o m p t r e m e d i a l a c t i o n and a l s o a s s u r e s t h a t t h e p r o b a b i l i t y o f an a c c i d e n t o c c u r r i n g d u r i n g t h e p e r i o d i s minimal.

REFERENCES 1. UFSAR, S e c t i o n 1.5.2.2.

2. ASME, B o i l e r and P r e s s u r e Vessel Code, S e c t i o n 111, A r t i c l e NB-7000.

PBAPS UNIT 3 B 2.0-9 R e v i s i o n No.

RCS P r e s s u r e SL B 2.1.2 BASES REFERENCES 3. ASME, B o i l e r and P r e s s u r e Vessel Code, S e c t i o n X I ,

( c o n t i nued 1 A r t i c l e IW-5000.

4. 10 C F R 100.

5. ASME, B o i l e r and P r e s s u r e Vessel Code, S e c t i o n 111, 1965 E d i t i o n , i n c l u d i n g Addenda t o summer o f 1966.

6. ASME, B o i l e r and P r e s s u r e Vessel Code, S e c t i o n 111, 1980 E d i t i o n , Addenda t o w i n t e r o f 1981.

PBAPS U N I T 3 B 2.0-10 R e v i s i o n No.

C o n t r o l Rod Scram Times B 3.1.4 BASES (continued)

SURVEILLANCE The f o u r SRs o f t h i s LCO a r e m o d i f i e d b y a N o t e s t a t i n g t h a t REQUIRE~ENTS d u r i n g a s i n g l e c o n t r o l r o d scram t i m e s u r v e i l l a n c e , t h e CRD pumps s h a l l b e i s o l a t e d f r o m t h e a s s o c i a t e d scram a c c u m u l a t o r . With t h e CRD pump i s o l a t e d , ( i . e . , c h a r g i n g v a l v e c l o s e d ) t h e i n f l u e n c e o f t h e CRD pump head does n o t a f f e c t t h e s i n g l e c o n t r o l r o d scram t i m e s . D u r i n g a f u l l c o r e scram, t h e CRD pump head w o u l d b e seen b y a l l c o n t r o l r o d s and w o u l d h a v e a n e g l i g i b l e e f f e c t on t h e scram in s e r t ion t i mes .

SR 3.1.4.1 The scram r e a c t i v i t y used i n DBA and t r a n s i e n t a n a l y s e s i s b a s e d on an assumed c o n t r o l r o d scram t i m e . ~ e a s u r e m e n t o f t h e scram t i m e s w i t h r e a c t o r steam dome p r e s s u r e 2 800 p s i g d e m o n s t r a t e s a c c e p t a b l e scram t i m e s f o r t h e t r a n s i e n t s a n a l y z e d i n R e f e r e n c e s 3 and 4.

Maximum scram i n s e r t i o n t i m e s o c c u r a t a r e a c t o r s t e a m dome p r e s s u r e o f a p p r o x i m a t e l y 800 p s i g because o f t h e c o m p e t i n g e f f e c t s o f r e a c t o r steam dome p r e s s u r e and s t o r e d accumulator energy. T h e r e f o r e , d e m o n s t r a t i o n o f adequate scram t i m e s a t r e a c t o r steam dome p r e s s u r e 2 800 p s i g e n s u r e s t h a t t h e measured scram t i m e s w i l l b e w i t h i n t h e s p e c i f i e d l i m i t s a t higher pressures. L i m i t s a r e s p e c i f i e d as a f u n c t i o n o f r e a c t o r p r e s s u r e t o a c c o u n t f o r t h e s e n s i t i v i t y o f t h e scram i n s e r t i o n t i m e s w i t h p r e s s u r e and t o a l l o w a r a n g e o f p r e s s u r e s o v e r w h i c h scram t i m e t e s t i n g c a n b e p e r f o r m e d . To e n s u r e t h a t s c r a m t i m e t e s t i n g i s p e r f o r m e d w i t h i n a r e a s o n a b l e t i m e a f t e r a shutdown 2 120 days o r l o n g e r , a l l c o n t r o l r o d s a r e r e q u i r e d t o b e t e s t e d b e f o r e e x c e e d i n g 40% RTP. T h i s F r e q u e n c y i s acceptable considering t h e a d d i t i o n a l s u r v e i l l a n c e s p e r f o r m e d f o r c o n t r o l r o d OPERABILITY, t h e f r e q u e n t v e r i f i c a t i o n o f a d e q u a t e a c c u m u l a t o r p r e s s u r e , and t h e r e q u i r e d t e s t i n g o f c o n t r o l r o d s a f f e c t e d b y f u e l movement w i t h i n t h e a s s o c i a t e c o r e c e l l and b y work on c o n t r o l r o d s o r t h e CRD System.

SR 3.1.4.2 A d d i t i o n a l t e s t i n g o f a sample o f c o n t r o l r o d s i s r e q u i r e d t o v e r i f y t h e c o n t i n u e d performance o f t h e scram f u n c t i o n d u r i n g t h e c y c l e . A r e p r e s e n t a t i v e sample c o n t a i n s a t l e a s t 10% o f t h e c o n t r o l r o d s . The sample r e m a i n s r e p r e s e n t a t i v e

( c o n t inued 1 PBAPS UNIT 3 B 3.1-25 R e v i s i o n No.

C o n t r o l Rod Scram Times B 3.1.4 BASES SURVEIL~AN~E SR 3, 1 . 4 . 3 (continued)

REQUIRE~E~TS S p e c i f i c examples o f w o r k t h a t c o u l d a f f e c t t h e s c r a m t i m e s a r e ( b u t a r e n o t l i m i t e d t o > t h e f o l l o w i n g : r e m o v a l o f any CRD f o r m a i n t e n a n c e o r m o d i f i c a t i o n ; r e p l a c e m e n t o f a c o n t r o l r o d ; and m a i n t e n a n c e or m o d i f i c a t i o n o f a s c r a m s o l e n o i d p i l o t v a l v e , scram v a l v e , a c c u m u l a t o r , i s o l a t i o n v a l v e o r c h e c k v a l v e i n t h e p i p i n g r e q u i r e d f o r scram.

The F r e q u e n c y o f once p r i o r t o d e c l a r i n g t h e a f f e c t e d c o n t r o l r o d OPERABLE i s a c c e p t a b l e because o f t h e c a p a b i l i t y t o t e s t t h e c o n t r o l rod over a range o f operating c o n d i t i o n s and t h e more f r e q u e n t s u r v e i l l a n c e s on o t h e r a s p e c t s o f c o n t r o l r o d OPERABILITY.

SR 3.1.4.4 When w o r k t h a t c o u l d a f f e c t t h e scram i n s e r t i o n t i m e i s p e r f o r m e d on a c o n t r o l r o d o r CRD System, o r when f u e l movement w i t h i n t h e r e a c t o r v e s s e l o c c u r s t e s t i n g m u s t be done t o d e m o n s t r a t e each a f f e c t e d c o n t r o l r o d i s s t i l l w i t h i n t h e l i m i t s o f Table 3.1.4-1 w i t h t h e r e a c t o r steam dome p r e s s u r e 2 800 p s i g . Where w o r k has been p e r f o r m e d a t h i g h r e a c t o r p r e s s u r e , t h e r e q u i r e m e n t s o f SR 3.1.4.3 and SR 3.1.4.4 c a n b e s a t i s f i e d w i t h one t e s t . For a c o n t r o l r o d a f f e c t e d b y w o r k p e r f o r m e d w h i l e s h u t down, h o w e v e r , a z e r o p r e s s u r e and h i g h p r e s s u r e t e s t may b e r e q u i r e d . T h i s t e s t i n g ensures t h a t , p r i o r t o withdrawing t h e c o n t r o l rod f o r c o n t i n u e d o p e r a t i o n , t h e c o n t r o l r o d scram p e r f o r m a n c e i s acceptable f o r o p e r a t i n g r e a c t o r pressure c o n d i t i o n s .

A l t e r n a t i v e l y , a c o n t r o l r o d scram t e s t d u r i n g h y d r o s t a t i c p r e s s u r e t e s t i n g c o u l d a l s o s a t i s f y b o t h c r i t e r i a . When f u e l movement o c c u r s w i t h i n t h e r e a c t o r p r e s s u r e v e s s e l ,

o n l y those c o n t r o l rods associated w i t h t h e core c e l l s a f f e c t e d b y t h e f u e l movement a r e r e q u i r e d t o b e s c r a m t i m e I

t e s t e d . During a r o u t i n e r e f u e l i n g outage, i t i s expected t h a t a l l c o n t r o l rods w i l l be a f f e c t e d . I The F r e q u e n c y o f once p r i o r t o e x c e e d i n g 40% RTP i s a c c e p t a b l e because o f t h e c a p a b i l i t y t o t e s t t h e c o n t r o l r o d o v e r a r a n g e o f o p e r a t i n g c o n d i t i o n s and t h e more f r e q u e n t s u r v e i l l a n c e s on o t h e r a s p e c t s o f c o n t r o l r o d OPERABILITY.

~ ~ _ ~ _ _

RFEREN~ES 1, UFSAR, S e c t i o n s 1.5.1.3 and 1 . 5 . 2 . 2 .

2. UFSAR, S e c t i o n 1 4 . 6 . 2 .

PBAPS UNIT 3 B 3.1-27 R e v i s i o n No.

SDV Vent and D r a i n V a l v e s B 3.1.8 BASES APPLICABLE i n s t r u m e n t volume exceeds a s p e c i f i e d s e t p o i n t . The SAFETY ANALYSES s e t p o i n t i s chosen so t h a t a l l c o n t r o l r o d s a r e i n s e r t e d

( c o n t inued 1 b e f o r e t h e SDV has i n s u f f i c i e n t volume t o a c c e p t a f u l l scram.

SDV v e n t and d r a i n v a l v e s s a t i s f y C r i t e r i o n 3 o f t h e NRC Pol i c y Statement.

- ~-

LCO The OPERABILITY o f a l l SDV v e n t and d r a i n v a l v e s e n s u r e s t h a t t h e SDV v e n t and d r a i n v a l v e s w i l l c l o s e d u r i n g a scram t o c o n t a i n r e a c t o r w a t e r d i s c h a r g e d t o t h e SDV p i p i n g .

S i n c e t h e v e n t and d r a i n l i n e s a r e p r o v i d e d w i t h t w o v a l v e s i n s e r i e s , t h e s i n g l e f a i l u r e o f one v a l v e i n t h e open position w i l l not impair the isolation function o f the s y s t e m . A d d i t i o n a l l y , t h e v a l v e s a r e r e q u i r e d t o b e opened f o l l o w i n g scram r e s e t t o ensure t h a t a p a t h i s a v a i l a b l e f o r t h e SDV p i p i n g t o d r a i n f r e e l y a t o t h e r t i m e s .

APPLICABILITY I n MODES 1 and 2, s c r a m may b e r e q u i r e d ; t h e r e f o r e , t h e SDV v e n t and d r a i n v a l v e s must b e OPERABLE. I n MODES 3 and 4, c o n t r o l rods a r e n o t a b l e t o be withdrawn s i n c e t h e r e a c t o r mode s w i t c h i s i n shutdown and a c o n t r o l r o d b l o c k i s a p p l i e d . T h i s p r o v i d e s adequate c o n t r o l s t o ensure t h a t o n l y a s i n g l e c o n t r o l r o d c a n be w i t h d r a w n . A l s o , d u r i n g MODE 5, o n l y a s i n g l e c o n t r o l r o d c a n b e w i t h d r a w n f r o m a c o r e c e l l c o n t a i n i n g f u e l a s s e m b l i e s . T h e r e f o r e , t h e SDV v e n t and d r a i n v a l v e s a r e n o t r e q u i r e d t o b e OPERABLE i n t h e s e MODES s i n c e t h e r e a c t o r i s s u b c r i t i c a l and o n l y one r o d may b e w i t h d r a w n and s u b j e c t t o scram.

ACTIONS The ACTIONS T a b l e i s m o d i f i e d b y N o t e s i n d i c a t i n g t h a t a s e p a r a t e C o n d i t i o n e n t r y i s a l l o w e d f o r each SDV v e n t and d r a i n l i n e . This i s acceptable, since t h e Required Actions f o r each C o n d i t i o n p r o v i d e a p p r o p r i a t e c o m p e n s a t o r y a c t i o n s f o r e a c h i n o p e r a b l e SDV l i n e . C o m p l y i n g w i t h t h e R e q u i r e d A c t i o n s may a l l o w f o r c o n t i n u e d o p e r a t i o n , and s u b s e q u e n t i n o p e r a b l e SDV l i n e s a r e g o v e r n e d b y s u b s e q u e n t C o n d i t i o n e n t r y and a p p l i c a t i o n o f a s s o c i a t e d R e q u i r e d A c t i o n s .

When a l i n e i s i s o l a t e d , t h e p o t e n t i a l f o r an i n a d v e r t e n t scram due t o h i g h SDV l e v e l i s i n c r e a s e d . D u r i n g t h e s e p e r i o d s , t h e l i n e may be u n i s o l a t e d u n d e r a d m i n i s t r a t i v e c o n t r o l . T h i s a l l o w s any a c c u m u l a t ~ dw a t e r i n t h e l i n e t o be d r a i n e d , t o p r e c l u d e a r e a c t o r s c r a m on SDV h i g h l e v e l .

T h i s i s a c c e p t a b l e s i n c e t h e a d ~ i n i s t r a t i v ec o n t r o l s e n s u r e t h e v a l v e can b e c l o s e d q u i c k l y , b y a d e d i c a t e d o p e r a t o r , i f a scram o c c u r s w i t h t h e v a l v e open.

( c o n t i nued 1 PBAPS U N I T 3 B 3.1-49 R e v i s i o n No.

SDV Vent and D r a i n Valves B 3.1.8 BASES ACTIONS -

A.l (continued)

When one SDV v e n t o r d r a i n v a l v e i s i n o p e r a b l e i n one o r more l i n e s , t h e a s s o c i a t e d l i n e must be i s o l a t e d t o c o n t a i n t h e r e a c t o r c o o l a n t d u r i n g a scram. The 7 day C o m p l e t i o n Time i s r e a s o n a b l e , g i v e n t h e l e v e l o f redundancy i n t h e l i n e s and t h e l o w p r o b a b i l i t y o f a scram o c c u r r i n g d u r i n g t h e t i m e t h e v a l v e s a r e i n o p e r a b l e and t h e l i n e i s n o t i s o l a t e d . The SDV i s s t i l l i s o l a b l e s i n c e t h e r e d u n d a n t v a l v e i n t h e a f f e c t e d l i n e i s OPERABLE. D u r i n g t h e s e p e r i o d s , t h e s i n g l e f a i l u r e c r i t e r i o n may n o t be p r e s e r v e d ,

and a h i g h e r r i s k e x i s t s t o a l l o w r e a c t o r w a t e r o u t o f t h e p r i m a r y system d u r i n g a scram.

I f b o t h v a l v e s i n a l i n e a r e i n o p e r a b l e , t h e l i n e must be i s o l a t e d t o c o n t a i n t h e r e a c t o r c o o l a n t d u r i n g a scram.

The 8 hour9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months C o m p l e t i o n Time t o i s o l a t e t h e l i n e i s based on t h e l o w p r o b a b i l i t y o f a scram o c c u r r i n g w h i l e t h e l i n e i s n o t i s o l a t e d and u n l i k e l i h o o d o f s i g n i f i c a n t CRD s e a l 1ea kage.

I f any R e q u i r e d A c t i o n and a s s o c i a t e d C o m p l e t i o n Time i s n o t met, t h e p l a n t must be b r o u g h t t o a MODE i n w h i c h t h e LCO does n o t a p p l y . To a c h i e v e t h i s s t a t u s , t h e p l a n t must be b r o u g h t t o a t l e a s t MODE 3 w i t h i n 12 h o u r s . The a l l o w e d C o m p l e t i o n Time o f 12 h o u r s i s r e a s o n a b l e , based on o p e r a t i n g e x p e r i e n c e , t o r e a c h MODE 3 f r o m f u l l power c o n d i t i o n s i n an o r d e r l y manner and w i t h o u t c h a l l e n g i n g p l a n t systems.

(continued)

PBAPS U N I T 3 B 3.1-50 R e v i s i o n No.

MCPR B 3.2.2 BASES SURVILLANCE SR 3.2.2.1 (continued)

~EQUIRE~~~TS i n the COLR (Ref. 1 2 ) t o ensure t h a t the reactor i s operating within the assumptions of the s a f e t y a n a l y s i s . The 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months Frequency i s based on b o t h engineering judgment a n d recognition o f the slowness of changes in power d i s t r i b u t i o n during normal operation. The 1 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months allowance a f t e r THERMAL POWER z 25% R I P i s achieved i s acceptable given the large inherent margin t o operating l i m i t s a t low power l e v e l s .

SR 3.2.2.2 Because the t r a n s i e n t analysis takes c r e d i t f o r conservatism i n the scram speed performance, i t must be demonstrated t h a t the s p e c i f i c scram speed d i s t r i b u t i o n i s c o n s i s t e n t with t h a t used in the t r a n s i e n t analysis. SR 3.2.2.2 determines the value of z, which i s a measure of the actual scram speed d i s t r i b u t i o n compared w i t h the assumed d i s t r i b u t i o n . The NCPR operating l i m i t i s then determined based on a n i n t e r p o l a t i o n between the applicable l i m i t s f o r Option A (scram times of LCO 3.1.4,"Control Rod Scram Times") a n d O p t i o n B ( r e a l i s t i c scram times) analyses. The parameter z must be determined once within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months a f t e r each s e t o f scram time t e s t s required by SR 3.1.4.1, SR 3.1.4.2, a n d SR 3.1.4.4 because the e f f e c t i v e scram speed d i s t r i b u t i o n may change during the cycle or a f t e r maintenance t h a t could a f f e c t scram times. The 72 hour8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months Completion Time i s acceptable due t o the r e l a t i v e l y minor changes in z expected during the fuel cycle.

REFERENCES 1. NUREG-0562, June 1979.

2. ~ E D O - 2 4 O l l - P - A , "General E l e c t r i c Standard Application f o r Reactor Fuel , " l a t e s t approved revision.

3. UFSAR, Chapter 3.

4. UFSAR, Chapter 6.

5. UFSAR, Chapter 14.

6. NEDO-24229-1, "Peach Bottom Atomic Power S t a t i o n Units 2 a n d 3 , Single Loop Operation," May 1980.

PBAPS UNIT 3 B 3.2-9 Revision No.

Feedwater and Main T u r b i n e H i g h Water Level T r i p I n s t r u m e n t a t i o n B 3.3.2.2 BASES ACTIONS U (continued) s i g n a l on a v a l i d s i g n a l . T h i s r e q u i r e s one channel p e r t r i p system t o be OPERABLE o r i n t r i p . I f the required c h a n n e l s c a n n o t be r e s t o r e d t o OPERABLE s t a t u s o r p l a c e d i n t r i p , C o n d i t i o n C must be e n t e r e d and i t s Required A c t i o n taken.

The 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months C o m p l e t i o n Time i s s u f f i c i e n t f o r t h e o p e r a t o r t o t a k e c o r r e c t i v e a c t i o n , and t a k e s i n t o a c c o u n t t h e l i k e l i h o o d o f an e v e n t r e q u i r i n g a c t u a t i o n o f f e e d w a t e r and main t u r b i n e h i g h w a t e r l e v e l t r i p i n s t r u m e n t a t i o n o c c u r r i n g d u r i n g t h i s p e r i o d . It i s a l s o c o n s i s t e n t w i t h t h e 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months C o m p l e t i o n Time p r o v i d e d i n LCO 3 . 2 . 2 f o r R e q u i r e d A c t i o n A.1, s i n c e t h i s i n s t r u m e n t a t i o n ' s purpose i s t o p r e c l u d e a MCPR v i o l a t i o n .

C . 1 and C.2 W i t h any R e q u i r e d A c t i o n and a s s o c i a t e d C o m p l e t i o n Time n o t met, t h e p l a n t must be b r o u g h t t o a MODE o r o t h e r s p e c i f i e d c o n d i t i o n i n w h i c h t h e LCO does n o t a p p l y . To a c h i e v e t h i s s t a t u s , THERMAL POWER must be reduced t o < 25% R I P w i t h i n 4 h o u r s . A l t e r n a t i v e l y , t h e a f f e c t e d f e e d w a t e r pump(s) and a f f e c t e d main t u r b i n e v a l v e ( s 1 may be removed f r o m s e r v i c e since t h i s performs t h e intended f u n c t i o n o f t h e i n s t r u m e n t a t i o n . As d i s c u s s e d i n t h e A p p l i c a b i l i t y s e c t i o n o f t h e Bases, o p e r a t i o n below 2 5 % RTP r e s u l t s i n s u f f i c i e n t m a r g i n t o t h e r e q u i r e d l i m i t s , and t h e f e e d w a t e r and main t u r b i n e h i g h water l e v e l t r i p i n s t r u m e n t a t i o n i s n o t r e q u i r e d t o p r o t e c t f u e l i n t e g r i t y d u r i n g t h e feedwater c o n t r o l l e r f a i l u r e , maximum demand e v e n t . The a l l o w e d C o m p l e t i o n Time o f 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months i s based on o p e r a t i n g e x p e r i e n c e t o reduce THRMAL POWER t o c 2 5 % RTP f r o m f u l l power c o n d i t i o n s i n an o r d e r l y manner and w i t h o u t c h a l l e n g i n g p l a n t systems, Required A c t i o n C . 1 i s m o d i f i e d by a Note w h i c h s t a t e s t h a t t h e Required A c t i o n i s o n l y a p p l i c a b l e i f t h e i n o p e r a b l e channel i s t h e r e s u l t o f an i n o p e r a b l e f e e d w a t e r pump t u r b i n e o r main t u r b i n e s t o p v a l v e . The Note c l a r i f i e s t h e s i t u a t i o n s under w h i c h t h e a s s o c i a t e d R e q u i r e d A c t i o n would be t h e a p p r o p r i a t e Required A c t i o n .

SUR~EILLANC The S u r v e i l l a n c e s a r e m o d i f i e d by a Note t o i n d i c a t e t h a t REQUIREME~TS when a channel i s p l a c e d i n an i n o p e r a b l e s t a t u s s o l e l y f o r performance o f r e q u i r e d S u r v e i l l a n c e s , e n t r y i n t o a s s o c i a t e d C o n d i t i o n s and R e q u i r e d A c t i o n s may be d e l a y e d f o r up t o 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months p r o v i d e d t h e a s s o c i a t e d F u n c t i o n m a i n t a i n s f e e d w a t e r and main t u r b i n e h i g h w a t e r l e v e l t r i p c a p a b i l i t y . Upon completion o f t h e S u r v e i l l a n c e , o r e x p i r a t i o n o f t h e 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months a l l o w a n c e , t h e channel must be r e t u r n e d t o OPERABLE s t a t u s o r t h e a p p l icab1 e C o n d i t i o n e n t e r e d and Requi r e d A c t ions t a k e n . T h i s Note i s based on t h e r e l i a b i l i t y a n a l y s i s

( R e f . 2 ) assumption o f t h e average t i m e r e q u i r e d t o p e r f o r m

( c o n t inuedl, PBAPS U N I T 3 B 3.3-63 R e v i s i o n No.

PAN I n s t r u m e n t a t i o n B 3.3.3.1 BASES LCO 7. D r v 11~ H~ i g h Range R a d i a t i o n (continued)

I n s t rument s : RR-9103 A, B (Green Pen)

Drywell h i g h range r a d i a t i o n i s a Category I v a r i a b l e provided t o monitor the potential o f s i g n i f i c a n t radiation r e l e a s e s and t o p r o v i d e r e l e a s e assessment f o r u s e b y o p e r a t o r s i n d e t e r m i n i n g t h e need t o i n v o k e s i t e emergency p l ans. P o s t a c c i d e n t d r y w e l l r a d i a t i on 1eve1 s a r e m o n i t o r e d b y f o u r i n s t r u m e n t c h a n n e l s e a c h w i t h a r a n g e o f 1 t o 1x108 R/hr. These r a d i a t i o n m o n i t o r s d r i v e t w o d u a l c h a n n e l r e c o r d e r s l o c a t e d i n t h e c o n t r o l room. Each r e c o r d e r and t h e t w o a s s o c i a t e d c h a n n e l s a r e i n a s e p a r a t e d i v i s i o n . As s u c h , t w o r e c o r d e r s and t w o c h a n n e l s o f r a d i a t i o n m o n i t o r i n g i n s t r u m e n t a t i o n (one per r e c o r d e r ) a r e r e q u i r e d t o be OPERABLE f o r c o m p l i a n c e w i t h t h i s LCO. T h e r e f o r e , t h e PAM Specification deals s p e c i f i c a l l y with these portions o f the i n s t r u m e n t channel s.

8. P r i m a r y ~ ~ n t a i n m e nI st o l a t i o n V a l v e 6 P C I V ) P o s i t i o n PCIV p o s i t i o n i s a Category I v a r i a b l e provided f o r v e r i f i c a t i o n o f containment i n t e g r i t y . I n t h e case o f P C I V position, the important information i s t h e i s o l a t i o n status o f t h e c o n t a i n m e n t p e n e t r a t i o n . The LCO r e q u i r e s one c h a n n e l o f v a l v e p o s i t i o n i n d i c a t i o n i n t h e c o n t r o l room t o b e OPERABLE f o r each a c t i v e P C I V i n a c o n t a i n m e n t p e n e t r a t i o n f l o w path, i . e . , two t o t a l channels o f P C I V p o s i t i o n i n d i c a t i o n f o r a p e n e t r a t i o n f l o w p a t h w i t h two a c t i v e v a l v e s . F o r c o n t a i n m e n t p e n e t r a t i o n s w i t h o n l y one a c t i v e P C I V h a v i n g c o n t r o l room i n d i c a t i o n , N o t e ( b )

r e q u i r e s a s i n g l e channel o f v a l v e p o s i t i o n i n d i c a t i o n t o be OPERABLE. T h i s i s s u f f i c i e n t t o r e d u n d a n t l y v e r i f y t h e i s o l a t i o n s t a t u s o f each i s o l a b l e p e n e t r a t i o n v i a i n d i c a t e d s t a t u s o f t h e a c t i v e v a l v e , as a p p l i c a b l e , and p r i o r knowledge o f p a s s i v e v a l v e o r system boundary s t a t u s . I f a penetration flow path i s isolated, p o s i t i o n i n d i c a t i o n f o r t h e PCIV(s) i n t h e associated p e n e t r a t i o n f l o w p a t h i s n o t needed t o d e t e r m i n e s t a t u s . T h e r e f o r e , t h e p o s i t i o n i n d i c a t i o n f o r v a l v e s i n an i s o l a t e d p e n e t r a t i o n f l o w p a t h i s n o t r e q u i r e d t o b e OPERABLE. The P C I V p o s i t i o n PAM i n s t r u m e n t a t i o n c o n s i s t s o f p o s i t i o n switches, associated w i r i n g and c o n t r o l room i n d i c a t i n g lamps f o r a c t i v e PCIVs

( c h e c k v a l v e s and manual v a l v e s a r e n o t r e q u i r e d t o h a v e position indication). T h e r e f o r e , t h e PAM S p e c i f i c a t i o n deals s p e c i f i c a l l y w i t h these instrument channels.

Each p e n e t r a t i o n i s t r e a t e d s e p a r a t e l y and e a c h p e n e t r a t i o n f l o w p a t h i s ons side red a s e p a r a t e f u n c t i o n . T h e r e f o r e ,

s e p a r a t e c o n d i t i o n e n t r y i s a l l o w e d f o r each i n o p e r a b l e p e n e t r a t i o n f l o w path.

C c o n t i nued)

PBAPS UNIT 3 B 3.3-70 R e v i s i o n No.

ATWS-RPT I n s t r u m e n t a t i o n B 3.3.4.1 BASES ACT I 0~ S D . 1 and D.2 (continued) 6 h o u r s i s r e a s o n a b l e , based on o p e r a t i n g e x p e r i e n c e , b o t h t o r e a c h MODE 2 f r o m f u l l power c o n d i t i o n s and t o remove a r e c i r c u l a t i o n pump f r o m s e r v i c e i n an o r d e r l y manner and w i t h o u t c h a l l e n g i n g p l a n t systems.

R e q u i r e d A c t i o n 0 . 1 i s m o d i f i e d by a Note w h i c h s t a t e s t h a t t h e R e q u i r e d A c t i o n i s o n l y a p p l i ~ a b l ei f t h e i n o p e r a b l e channel i s t h e r e s u l t o f an i n o p e r a b l e RPT b r e a k e r . The Note c l a r i f i e s t h e s i t u a t i o n s under w h i c h t h e a s s o c i a t e d R e q u i r e d A c t i o n would be t h e a p p r o p r i a t e R e q u i r e d A c t i o n .

SURVEILLANCE The S u r v e i l l a n c e s a r e m o d i f i e d by a Note t o i n d i c a t e t h a t REQUIRE~ENTS when a channel i s p l a c e d i n an i n o p e r a b l e s t a t u s s o l e l y f o r performance o f r e q u i r e d S u r v e i l l a n c e s , e n t r y i n t o t h e a s s o c i a t e d C o n d i t i o n s and R e q u i r e d A c t i o n s may be d e l a y e d f o r up t o 6 h o u r s p r o v i d e d t h e a s s o c i a t e d F u n c t i o n m a i n t a i n s ATWS-RPT t r i p c a p a b i l i t y . Upon c o m p l e t i o n o f t h e S u r v e i l l a n c e , o r e x p i r a t i o n o f t h e 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months a l l o w a n c e , t h e channel must be r e t u r n e d t o OPERABLE s t a t u s o r t h e a p p l i c a b l e C o n d i t i o n e n t e r e d and R e q u i r e d A c t i o n s t a k e n .

T h i s Note i s based on t h e r e l i a b i l i t y a n a l y s i s ( R e f . 1) assumption o f t h e average t i m e r e q u i r e d t o p e r f o r m channel S u r v e i l l a n c e . That a n a l y s i s d e m o n s t r a t e d t h a t t h e 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months t e s t i n g a l l o w a n c e does n o t s i g n i f i c a n t l y reduce t h e p r o b a b i l i t y t h a t t h e r e c i r c u l a t i o n pumps w i l l t r i p when necessary.

SR 3.3. 4 . 1 . 1 Performance o f t h e CHANNEL CHECK once e v e r y 12 h o u r s ensures t h a t a g r o s s f a i l u r e o f i n s t r u m e n t a t i o n has n o t o c c u r r e d . A CHANNEL CHECK i s n o r m a l l y a comparison o f t h e p a r a m e t e r i n d i c a t e d on one channel t o a s i m i l a r parameter on o t h e r channels. I t i s based on t h e assumption t h a t i n s t r u m e n t channels m o n i t o r i n g t h e same parameter s h o u l d r e a d a p p ~ o x i m a t e l y t h e same v a l u e . S i g n i f i c a n t d e v i a t i o n s between t h e i n s t r u m e n t channels c o u l d be an i n d i c a t i o n o f e x c e s s i v e i n s t r u m e n t d r i f t i n one o f t h e c h a n n e l s o r something even more s e r i o u s . A CHANNEL CHECK w i l l d e t e c t g r o s s channel f a i l u r e ; t h u s , i t i s key t o v e r i f y i n g t h e i n s t r u m e n t a t i o n c o n t i n u e s t o o p e r a t e p r o p e r l y between each CHAN~EL~ALIBRATION.

Agreement c r i t e r i a a r e d e t e r m i n e d by t h e p l a n t s t a f f based on a c o m b i n a t i o n o f t h e channel i n s t r u m e n t u n c e r t a i n t i e s ,

i n c l u d i n g i n d i c a t i o n and r e a d a b i l i t y . I f a channel i s o u t s i d e t h e c r i t e r i a , i t may be an i n d i c a t i o n t h a t t h e i n s t r u m e n t has d r i f t e d o u t s i d e i t s l i m i t .

{continued}

PBAPS U N I T 3 B 3.3-90 R e v i s i o n No.

EOC-RPT I n s t r u m e n t a t i o n B 3.3.4.2 BASES ACTIONS

( c o n t inued 1 A . 1 and A.2 I W i t h one o r more r e q u i r e d c h a n n e l s i n o p e r a b l e , b u t w i t h I EOC-RPT t r i p c a p a b i l i t y m a i n t a i n e d ( r e f e r t o R e q u i r e d A c t i o n B . 1 Bases), t h e E O C - R P T System i s c a p a b l e o f p e r f o r m i n g t h e i n t e n d e d f u n c t i o n . However, t h e r e l i a b i l i t y and redundancy o f t h e EOC-RPT i n s t r u m e n t a t i o n i s reduced such t h a t a s i n g l e f a i l u r e i n t h e r e m a i n i n g t r i p system c o u l d r e s u l t i n t h e i n a b i l i t y o f t h e EOC-RPT System t o perform the intended function. Therefore, only a l i m i t e d t i m e i s a l l o w e d t o r e s t o r e c o m p l i a n c e w i t h t h e LCO. Because o f t h e d i v e r s i t y o f sensors a v a i l a b l e t o p r o v i d e t r i p s i g n a l s , t h e l o w p r o b a b i l i t y o f e x t e n s i v e numbers o f i n o p e r a b i l i t i e s a f f e c t i n g a l l d i v e r s e F u n c t i o n s , and t h e l o w p r o b a b i l i t y o f an e v e n t r e q u i r i n g t h e i n i t i a t i o n o f an EOC-RPT, 7 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months i s p r o v i d e d t o r e s t o r e t h e i n o p e r a b l e channels (Required A c t i o n A . 1 ) . Alternately, the inoperable c h a n n e l s may be p l a c e d i n t r i p ( R e q u i r e d A c t i o n A . 2 ) s i n c e t h i s would c o n s e r v a t i v e l y compensate f o r t h e i n o p e r a b i l i t y ,

r e s t o r e c a p a b i l i t y t o accommodate a s i n g l e f a i l u r e , and a l l o w o p e r a t i o n t o c o n t i n u e . As n o t e d i n R e q u i r e d A c t i o n A . 2 , p l a c i n g t h e channel i n t r i p w i t h no f u r t h e r r e s t r i c t i o n s i s n o t a l l o w e d i f t h e i n o p e r a b l e channel i s t h e I

r e s u l t o f an i n o p e r a b l e b r e a k e r , s i n c e t h i s may n o t a d e q u a t e l y compensate f o r t h e i n o p e r a b l e b r e a k e r ( e . g . , t h e b r e a k e r may be i n o p e r a b l e such t h a t i t w i l l n o t open). If i t i s n o t d e s i r e d t o p l a c e t h e channel i n t r i p ( e . g . , a s i n t h e case where p l a c i n g t h e i n o p e r a b l e channel i n t r i p would r e s u l t i n an RPT, o r i f t h e i n o p e r a b l e channel i s t h e r e s u l t o f an i n o p e r a b l e b r e a k e r ) , C o n d i t i o n C must be e n t e r e d and i t s Required A c t i o n s taken.

Required A c t i o n B . 1 i s intended t o ensure t h a t a p p r o p r i a t e a c t i o n s are taken i f m u l t i p l e , inoperable, u n t r i p p e d c h a n n e l s w i t h i n t h e same F u n c t i o n r e s u l t i n t h e F u n c t i o n n o t m a i n t a i n i n g EOC-RPT t r i p c a p a b i l i t y . A Function i s c o n s i d e r e d t o be m a i n t a i n i n g EOC-RPT t r i p c a p a b i l i t y when s u f f i c i e n t channels a r e OPERABLE o r i n t r i p , such t h a t t h e EOC-RPT System w i l l g e n e r a t e a t r i p s i g n a l f r o m t h e g i v e n F u n c t i o n on a v a l i d s i g n a l and b o t h r e c i r c u l a t i o n pumps can be t r i p p e d . T h i s r e q u i r e s two c h a n n e l s o f t h e F u n c t i o n i n t h e same t r i p system, t o each be OP~RABLE o r i n t r i p , and t h e a s s o c i a t e d EOC-RPT b r e a k e r s t o be OPERABLE.

( c o n t inued 1 PBAPS U N I T 3 B 3.3-92f R e v i s i o n No.

EOC-RPT Instrumentation B 3.3.4.2 BASES A~TIO~S B.1 (continued)

The 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months C o m p l e t i o n Time i s s u f f i c i e n t t i m e f o r t h e o p e r a t o r t o t a k e c o r r e c t i v e a c t i o n , and t a k e s i n t o account t h e l i k e l i h o o d o f an e v e n t r e q u i r i n g a c t u a t i o n o f t h e EOC-RPT i n s t r u m e n t a t i o n d u r i n g t h i s p e r i o d . I t i s a l s o c o n s i s t e n t w i t h t h e 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months C o m p l e t i o n Time p r o v i d e d i n LCO 3.2.1 and 3.2.2 f o r R e q u i r e d A c t i o n A . 1 , s i n c e t h i s i n s t r u m e n t a t i o n ' s purpose i s t o p r e c l u d e a t h e r m a l l i m i t v i of a t i on.

C . 1 and C.2 W i t h any R e q u i r e d A c t i o n and a s s o c i a t e d C o m p l e t i o n Time n o t met, T ~ E R ~ APLO ~ E Rmust be reduced t o < 2 9 . 5 % RTP w i t h i n 4 h o u r s . A l t e r n a t e l y , f o r an i n o p e r a b l e b r e a k e r ( e . g . , t h e b r e a k e r may be i n o p e r a b l e such t h a t i t w i l l n o t open) t h e a s s o c i a t e d r e c i r c u l a t i o n pump may be removed f r o m s e r v i c e ,

since t h i s performs t h e intended f u n c t i o n o f t h e i n s t r u m e n t a t i o n . The a l l o w e d C o m p l e t i o n Time o f 4 h o u r s i s r e a s o n a b l e , based on o p e r a t i n g e x p e r i e n c e , t o r e d u c e THERMAL POWER t o c 2 9 . 5 % RTP f r o m f u l l power c o n d i t i o n s i n an o r d e r l y manner and w i t h o u t c h a l l e n g i n g p l a n t systems.

R e q u i r e d A c t i o n C . 1 i s m o d i f i e d by a Note w h i c h s t a t e s t h a t t h e Required A c t i o n i s o n l y a p p l i c a b l e i f t h e i n o p e r a b l e channel i s t h e r e s u l t o f an i n o p e r a b l e RPT b r e a k e r . The NOTE c l a r i f i e s t h e s i t u a t i o n s under w h i c h t h e a s s o c i a t e d R e q u i r e d A c t i o n would be t h e a p p r o p r i a t e R e q u i r e d A c t i o n .

SURVEILLA~CE The S u r v e i l l a n c e s a r e m o d i f i e d by a Note t o i n d i c a t e t h a t REQU I R~ENTS when a channel i s p l a c e d i n an i n o p e r a b l e s t a t u s s o l e l y f o r performance o f r e q u i r e d S u r v e i l l a n c e s , e n t r y i n t o a s s o c i a t e d C o n d i t i o n s and Required A c t i o n s may be d e l a y e d f o r up t o 6 h o u r s p r o v i d e d t h e a s s o c i a t e d F u n c t i o n m a i n t a i n s EOC-RPT t r i p capability. Upon c o m p l e t i o n o f t h e S u r v e i l l a n c e , o r e x p i r a t i o n o f t h e 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months a l l o w a n c e , t h e channel must be r e t u r n e d t o OPERABLE s t a t u s o r t h e a p p l i c a b l e C o n d i t i o n e n t e r e d and R e q u i r e d A c t i o n s t a k e n . T h i s Note i s based on t h e r e l i a b i l i t y a n a l y s i s ( R e f . 5 ) assumption o f t h e average t i m e r e q u i r e d t o p e r f o r m channel S u r v e i 11 ance. T h a t a n a l y s i s demonstrated t h a t t h e 6 h o u r t e s t i n g a l l o w a n c e does n o t s i g n i f i c a n t l y reduce t h e p r o b a b i 1 it y t h a t t h e r e c i r c u l a t i o n pumps w i 11 t r i p when n e c e s s a r y .

(continued)

PBAPS U N I T 3 B 3.3-92g R e v i s i o n No.

ECCS I n s t r u m e n t a t i o n B 3.3.5.1 BASES APPLICABLE w i t h t h e i r s e t p o i n t s w i t h i n t h e s p e c i f i e d A l l o w a b l e Values, SAFETY A N A L Y S E S , where a p p r o p r i a t e . The a c t u a l s e t p o i n t i s c a l i b r a t e d LCO, and c o n s i s t e n t w i t h a p p l i c a b l e s e t p o i n t methodology assumptions.

APPLI CAB IL I T Y T a b l e 3 . 3 . 5 . 1 - 1 i s m o d i f i e d by two f o o t n o t e s . Footnote ( a >

(continued 1 i s added t o c l a r i f y t h a t t h e a s s o c i a t e d f u n c t i o n s a r e r e q u i r e d t o be OPERABLE i n MODES 4 and 5 o n l y when t h e i r s u p p o r t e d ECCS a r e r e q u i r e d t o be PERA ABLE p e r LCO 3 . 5 . 2 ,

ECCS- hutd down. F o o t n o t e ( b ) i s added t o show t h a t c e r t a i n ECCS i n s t r u m e n t a t i o n F u n c t i o n s a l s o p e r f o r m DG i n i t i a t i o n .

A l l o w a b l e Values a r e s p e c i f i e d f o r each ECCS F u n c t i o n s p e c i f i e d i n t h e Table. T r i p s e t p o i n t s are s p e c i f i e d i n t h e s e t p o i n t c a l c u l a t i o n s . The t r i p s e t p o i n t s a r e s e l e c t e d t o e n s u r e t h a t t h e s e t t i n g s do n o t exceed t h e A l l o w a b l e Value between CHA~NELCALIBRATIONS. O p e r a t i o n w i t h a t r i p s e t t i n g less conservative than the t r i p setpoint, but w i t h i n i t s A l l o w a b l e Value, i s a c c e p t a b l e . A channel i s i n o p e r a b l e i f i t s actual t r i p setpoint i s not within i t s required A l l o w a b l e Value. T r i p s e t p o i n t s a r e t h o s e p r e d e t e r m i n e d v a l u e s o f o u t p u t a t w h i c h an a c t i o n s h o u l d t a k e p l a c e . The s e t p o i n t s a r e compared t o t h e a c t u a l p r o c e s s p a r a m e t e r Ce.g., r e a c t o r v e s s e l w a t e r l e v e l ) , and when t h e measured o u t p u t v a l u e o f t h e p r o c e s s parameter exceeds t h e s e t p o i n t ,

t h e a s s o c i a t e d d e v i c e (e.g., t r i p u n i t ) changes s t a t e . The a n a l y t i c o r design l i m i t s are derived from t h e l i m i t i n g v a l u e s o f t h e p r o c e s s parameters o b t a i n e d f r o m t h e s a f e t y a n a l y s i s o r o t h e r a p p r o p r i a t e documents. The A l l o w a b l e Values a r e d e r i v e d f r o m t h e a n a l y t i c o r d e s i g n l i m i t s ,

c o r r e c t e d f o r c a l i b r a t i o n , p r o c e s s , and i n s t r u m e n t e r r o r s .

The t r i p s e t p o i n t s a r e d e t e r m i n e d f r o m a n a l y t i c a l o r d e s i g n l i m i t s , c o r r e c t e d f o r c a l i b r a t i o n , p r o c e s s , and i n s t r u m e n t e r r o r s , a s w e l l as, i n s t r u m e n t d r i f t . I n s e l e c t e d cases, t h e A l l o w a b l e Values and t r i p s e t p o i n t s a r e d e t e r m i n e d from e n g i n e e r i n g judgement or h i s t o r i c a l l y accepted p r a c t i c e r e l a t i v e t o t h e i n t e n d e d f u n c t i o n s o f t h e c h a n n e l . The t r i p s e t p o i n t s d e t e r m i n e d i n t h i s manner p r o v i d e adequate p r o t e c t i o n by assuming i n s t r u m e n t and p r o c e s s u n c e r t a i n t i e s e x p e c t e d f o r t h e e n v i r o n ~ e n t sd u r i n g t h e o p e r a t i n g t i m e o f t h e a s s o c i a t e d c h a n n e l s a r e accounted f o r . For t h e Core Spray and LPCI Pump S t a r t - T i m e Delay R e l a y s , adequate margins f o r a p p l i c a b l e s e t p o i n t methodologies are i n c o r p o r a t e d i n t o t h e A l l o w a b l e Values and a c t u a l s e t p o i n t s .

I n g e n e r a l , t h e i n d i v i d u a l F u n c t i o n s a r e r e q u i r e d t o be OPERARLE i n t h e MODES o r o t h e r s p e c i f i e d c o n d i t i o n s t h a t may r e q u i r e ECCS ( o r DG) i n i t i a t i o n t o m i t i g a t e t h e consequences o f a d e s i g n b a s i s t r a n s i e n t o r a c c i d e n t . To ensure r e l i a b l e ECCS and DG f u n c t i o n , a c o m b i n a t i o ~ o f F u n c t i o n s i s r e q u i r e d t o p r o v i d e p r i m a r y and secondary i n i t i a t i o n s i g n a l s .

( c o n t inued 1 PBAPS U N I T 3 B 3.3-100 R e v i s i o n No.

E C C S I n s t r u ~ e n t a ton i

B 3.3.5.1 BASES APPLICABLE The s p e c i f i c A p p l i c a b l e S a f e t y A n a l y s e s , LCO, and SAFETY A~ALYSES, A p p l i c a b i l i t y d i s c u s s i o n s a r e l i s t e d b e l o w on a F u n c t i o n b y LCO, and Function basis.

APPLICA5ILITY

( c o n t inued 1 Low r e a c t o r p r e s s u r e v e s s e l ( R P V ) w a t e r l e v e l i n d i c a t e s t h a t t h e c a p a b i l i t y t o c o o l t h e f u e l may b e t h r e a t e n e d . S h o u l d RPV w a t e r l e v e l d e c r e a s e t o o f a r , f u e l damage c o u l d r e s u l t .

The l o w p r e s s u r e ECCS and a s s o c i a t e d DGs a r e i n i t i a t e d a t R e a c t o r V e s s e l Water L e v e l -Low Low Low ( L e v e l 1) t o e n s u r e t h a t c o r e s p r a y and f l o o d i n g f u n c t i o n s a r e a v a i l a b l e t o p r e v e n t o r m i n i m i z e f u e l damage. The DGs a r e i n i t i a t e d f r o m F u n c t i o n 1.a s i g n a l s . T h i s F u n c t i o n , i n c o n j u n c t i o n w i t h a Reactor Pressure-Low ( I n j e c t i o n Permissive) s i g n a l , a l s o i n i t i a t e s t h e c l o s u r e o f t h e R e c i r c u l a t i o n Discharge Valves t o e n s u r e t h e LPCI subsystems i n j e c t i n t o t h e p r o p e r RPV l o c a t i o n . The R e a c t o r V e s s e l Water L e v e l -Low Low Low

( L e v e l 1) i s one o f t h e F u n c t i o n s assumed t o b e OPERABLE and c a p a b l e o f i n i t i a t i n g t h e ECCS d u r i n g t h e t r a n s i e n t s a n a l y z e d i n R e f e r e n c e s 1 and 3. I n a d d i t i o n , t h e R e a c t o r V e s s e l Water L e v e l -Low Low Low ( L e v e l 1) F u n c t i o n i s d i r e c t l y assumed i n t h e a n a l y s i s o f t h e r e c i r c u l a t i o n l i n e b r e a k ( R e f . 4 ) and t h e c o n t r o l r o d d r o p a c c i d e n t ( C R D A )

a n a l y s i s . The c o r e c o o l i n g f u n c t i o n o f t h e ECCS, a l o n g w i t h t h e scram a c t i o n o f t h e R e a c t o r P r o t e c t i o n System ( R P S ) ,

e n s u r e s t h a t t h e f u e l peak c l a d d i n g t e m p e r a t u r e r e m a i n s b e l o w t h e l i m i t s o f 10 CFR 50.46.

R e a c t o r V e s s e l Water L e v e l - L o w Low Low ( L e v e l 1) s i g n a l s a r e i n i t i a t e d f r o m f o u r l e v e l t r a n s m i t t e r s t h a t sense t h e d i f f e r e n c e b e t w e e n t h e p r e s s u r e due t o a c o n s t a n t c o l u m n o f w a t e r ( r e f e r e n c e l e g ) and t h e p r e s s u r e due t o t h e a c t u a l water l e v e l ( v a r i a b l e l e g ) i n t h e vessel.

The R e a c t o r V e s s e l Water L e v e l -Low Low Low ( L e v e l 1)

A l l o w a b l e V a l u e i s chosen t o a l l o w t i m e f o r t h e low p r e s s u r e c o r e f l o o d i n g s y s t e m s t o a c t i v a t e and p r o v i d e a d e q u a t e c o o l ing.

F o u r c h a n n e l s o f R e a c t o r V e s s e l Water L e v e l - L o w Low Low

( L e v e l 1) F u n c t i o n a r e o n l y r e q u i r e d t o b e OPERA5LE when t h e ECCS a r e r e q u i r e d t o b e OPERABLE t o e n s u r e t h a t no s i n g l e i n s t r u m e n t f a i l u r e can p r e c l u d e ECCS I PBAPS UNIT 3 B 3.3-101 R e v i s i o n No.

ECCS I n s t r u m e n t a t i o n B 3.3.5.1 BASES APPLICABLE SAFETY ANALYSES, (continued)

LCO, and APPLICABILITY i n i t i a t i o n . P e r F o o t n o t e ( a > t o T a b l e 3 . 3 . 5 . 1 - 1 , t h i s ECCS F u n c t i o n i s o n l y r e q u i r e d t o b e OPERABLE i n MODES 4 and 5 whenever t h e a s s o c i a t e d E C C S i s r e q u i r e d t o b e OPERABLE p e r LCO 3 . 5 . 2 . R e f e r t o LCO 3 . 5 . 1 and LCO 3 . 5 . 2 , " E C C S -

Shutdown," f o r A p p l i c a b i l i t y Bases f o r t h e l o w p r e s s u r e ECCS s u b s y s t e m s ; LCO 3.8.1, "AC S o u r c e s - O p e r a t i n g " ; and LCO 3 . 8 2 , " A C S o u r c e s - S h u t d o w n , " f o r A p p l i c a b i l i t y Bases f o r t h e DGs.

1.b. 2.b. Drvwe 1 1 P r e s s u r e - H i u h High pressure i n t h e drywell could i n d i c a t e a break i n t h e r e a c t o r c o o l a n t p r e s s u r e b o u n d a r y (RCPB). The low p r e s s u r e E C C S and a s s o c i a t e d DGs a r e i n i t i a t e d upon r e c e i p t o f t h e Drywell Pressure-High Function w i t h a Reactor Pressure-Low

( I n j e c t i o n Permissive) i n order t o minimize t h e p o s s i b i l i t y o f f u e l damage. The DGs a r e i n i t i a t e d f r o m F u n c t i o n 1 . b signals. This Function also i n i t i a t e s the closure o f the r e c i r c u l a t i o n d i s c h a r g e v a l v e s t o e n s u r e t h e LPCI subsystems i n j e c t i n t o t h e p r o p e r RPV l o c a t i o n . The D r y w e l l Pressure-High Function w i t h a Reactor Pressure-Low

( I n j e c t i o n P e r m i s s i v e ) , a l o n g w i t h t h e Reactor Water L e v e l - L o w Low Low ( L e v e l 1) F u n c t i o n , i s d i r e c t l y assumed i n t h e a n a l y s i s o f t h e r e c i r c u l a t i o n l i n e break (Ref. 4).

The c o r e c o o l i n g f u n c t i o n o f t h e ECCS, a l o n g w i t h t h e scram a c t i o n o f t h e RPS, e n s u r e s t h a t t h e f u e l peak c l a d d i n g t e m p e r a t u r e r e m a i n s b e l o w t h e l i m i t s o f 1 0 CFR 50.46.

High drywell pressure signals are i n i t i a t e d from f o u r p r e s s u r e t r a n s m i t t e r s t h a t sense d r y w e l l p r e s s u r e . The A l l o w a b l e V a l u e was s e l e c t e d t o b e as l o w a s p o s s i b l e and b e i n d i c a t i v e o f a LOCA i n s i d e p r i m a r y c o n t a i n m e n t .

The D r y w e l l P r e s s u r e - H i g h F u n c t i o n i s r e q u i r e d t o b e OPERABLE when t h e ECCS o r DG i s r e q u i r e d t o b e OPERABLE i n c o n j u n c t i o n w i t h t i m e s when t h e p r i m a r y c o n t a i n m e n t i s r e q u i r e d t o be OPERABLE. Thus, f o u r c h a n n e l s o f t h e CS and LPCI D r y w e l l P r e s s u r e - H i g h F u n c t i o n a r e r e q u i r e d t o b e OPERABLE i n MODES 1, 2, and 3 t o e n s u r e t h a t no s i n g l e i n s t r u m e n t f a i l u r e can p r e c l u d e ECCS and DG i n i t i a t i o n . I n MODES 4 and 5, t h e D r y w e l l P r e s s u r e - H i g h F u n c t i o n i s n o t required, since t h e r e i s i n s u f f i c i e n t energy i n t h e r e a c t o r t o p r e s s u r i z e t h e primary containment t o Drywell Pressure-H i g h s e t p o i n t . R e f e r t o LCO 3 . 5 . 1 f o r A p p l i c a b i l i t y Bases f o r t h e l o w p r e s s u r e ECCS subsystems and t o LCO 3 . 8 , l f o r A p p l i c a b i l i t y Bases f o r t h e DGs.

PBAPS UNIT 3 B 3.3-102 R e v i s i o n No.

ECCS I n s t r u m e n t a t i o n B 3.3.5.1 BASES APPLICABLE 1.c. 2.c. R e a c t o r Pressure-Low ( I n j e c t i o n Permissive)

SAFETY ANALYSES, LCO, and Low r e a c t o r p r e s s u r e s i g n a l s a r e used as p e r m i s s i v e s f o r t h e APPLICABILITY l o w p r e s s u r e ECCS subsystems. T h i s ensures t h a t , p r i o r t o (continued) o p e n i n g t h e i n j e c t i o n v a l v e s o f t h e l o w p r e s s u r e ECCS subsystems o r i n i t i a t i n g t h e l o w p r e s s u r e ECCS subsystems on a D r y w e l l P r e s s u r e - H i g h s i g n a l , t h e r e a c t o r p r e s s u r e has f a l l e n t o a v a l u e b e l o w t h e s e subsystems' maximum d e s i g n p r e s s u r e and a b r e a k i n s i d e t h e RCPB has o c c u r r e d respectively . T h i s F u n c t i o n a1 so p r o v i d e s permi s s i ve f o r t h e c l o s u r e o f t h e r e c i r c u l a t i o n discharge valves t o ensure t h e LPCI subsystems i n j e c t i n t o t h e p r o p e r R P V l o c a t i o n ,

The R e a c t o r Pressure-Low i s one o f t h e F u n c t i o n s assumed t o be OPERABLE and c a p a b l e o f p e r m i t t i n g i n i t i a t i o n o f t h e ECCS d u r i n g t h e t r a n s i e n t s a n a l y z e d i n References 1 and 3. In a d d i t i o n , t h e R e a c t o r P r e s s u r e - Low F u n c t i o n is d i r e c t l y assumed i n t h e a n a l y s i s o f t h e r e c i r c u l a t i o n l i n e b r e a k

( R e f . 4 ) . The c o r e c o o l i n g f u n c t i o n o f t h e ECCS, a l o n g w i t h t h e scram a c t i o n o f t h e RPS, ensures t h a t t h e f u e l peak c l a d d i n g t e m p e r a t u r e remains b e l o w t h e 1 i m i t s o f 10 CFR 50.46.

The R e a c t o r P r e s s u r e - Low s i g n a l s a r e in i ti a t e d f r o m f o u r p r e s s u r e t r a n s m i t t e r s t h a t sense t h e r e a c t o r dome p r e s s u r e .

The A l l o w a b l e Value i s l o w enough t o p r e v e n t o v e r p r e s s u r i n g t h e equipment i n t h e low p r e s s u r e ECCS, b u t h i g h enough t o e n s u r e t h a t t h e ECCS i n j e c t i o n p r e v e n t s t h e f u e l peak c l a d d i n g temperature f r o m exceeding t h e l i m i t s o f 10 CFR 50.46.

Four c h a n n e l s o f R e a c t o r Pressure-Low F u n c t i o n a r e o n l y r e q u i r e d t o be OPERABLE when t h e ECCS i s r e q u i r e d t o be OPERABLE t o ensure t h a t no s i n g l e i n s t r u m e n t f a i l u r e can p r e c l u d e ECCS i n i t i a t i o n . Per f o o t n o t e ( a ) t o T a b l e 3.3.5.1-1, t h i s ECCS F u n c t i o n i s o n l y r e q u i r e d t o be OPERABLE i n MODES 4 and 5 whenever t h e a s s o c i a t e d ECCS i s r e q u i r e d t o be OPERABLE p e r LCO 3 . 5 . 2 , R e f e r t o LCO 3 . 5 . 1 and LCO 3 . 5 . 2 f o r A p p l i c a b i l i t y Bases f o r t h e l o w p r e s s u r e ECCS subsystems.

1 . d . 2 . s . Core Sprav and Low P r e s s u r e C o o l a n t I n j e c t i o n Pump D i s c h a r s e Flow-Low (Bvpass)

The minimum f l o w i n s t r u m e n t s a r e p r o v i d e d t o p r o t e c t t h e a s s o c i a t e d l o w p r e s s u r e ECCS pump f r o m o v e r h e a t i n g when t h e pump i s o p e r a t i n g and t h e a s s o c i a t e d i n j e c t i o n v a l v e i s n o t f u l l y open. The minimum f l o w l i n e v a l v e i s opened when l o w f l o w i s sensed, and t h e v a l v e i s a u t o m a t i c a l l y c l o s e d when t h e f l o w r a t e i s adequate t o p r o t e c t t h e pump. The LPCI and (continued)

PBAPS U N I T 3 B 3.3-103 R e v i s i o n No.

ECCS I n s t r u ~ e n t a t i o n B 3.3.5.1 BASES APPLICABLE 1 . d . 2 , s . Core S p r a y and Low P r e s s u r e C o o l a n t I n j e c t i o n SAFETY ANALYSES Pump D i s c h a r q e Flow-Low ( B y p a s s ) ( c o n t i n u e d )

LCO, and APPLICA~ILITY CS Pump D i s c h a r g e Flow-Low F u n c t i o n s a r e assumed t o b e OPERABLE and c a p a b l e o f c l o s i n g t h e minimum f l o w v a l v e s t o e n s u r e t h a t t h e l o w p r e s s u r e ECCS f l o w s assumed d u r i n g t h e t r a n s i e n t s and a c c i d e n t s a n a l y z e d i n R e f e r e n c e s 1, 2, and 3 a r e m e t . The c o r e c o o l i n g f u n c t i o n o f t h e ECCS, a l o n g w i t h t h e s c r a m a c t i o n o f t h e RPS, e n s u r e s t h a t t h e f u e l peak c l a d d i n g temperature remains below t h e l i m i t s o f 1 0 CFR 50.46.

One d i f f e r e n t i a l p r e s s u r e s w i t c h p e r ECCS pump i s u s e d t o d e t e c t t h e a s s o c i a t e d s u b s y s t e m s ' f l o w r a t e s , The l o g i c i s a r r a n g e d s u c h t h a t each s w i t c h c a u s e s i t s a s s o c i a t e d minimum f l o w v a l v e t o open. The l o g i c w i l l c l o s e t h e minimum f l o w v a l v e o n c e t h e c l o s u r e s e t p o i n t i s exceeded. The LPCI minimum f l o w v a l v e s a r e t i m e d e l a y e d such t h a t t h e v a l v e s w i l l n o t open f o r 10 seconds a f t e r t h e s w i t c h e s d e t e c t l o w f l o w . The t i m e d e l a y i s p r o v i d e d t o l i m i t r e a c t o r v e s s e l i n v e n t o r y l o s s d u r i n g t h e s t a r t u p o f t h e RHR shutdown c o o l in g mode. The Pump D i s c h a r g e F1 ow- Low A1 1 owabl e V a l u e s a r e h i g h enough t o e n s u r e t h a t t h e pump f l o w r a t e i s s u f f i c i e n t t o p r o t e c t t h e pump, y e t l o w enough t o e n s u r e t h a t t h e c l o s u r e o f t h e mini mu^ f l o w v a l v e i s i n i t i a t e d t o a l l o w f u l l f l o w i n t o t h e core.

Each c h a n n e l o f Pump D i s c h a r g e Flow-Low F u n c t i o n ( f o u r CS c h a n n e l s and f o u r LPCI c h a n n e l s ) i s o n l y r e q u i r e d t o b e OPERABLE when t h e a s s o c i a t e d ECCS i s r e q u i r e d t o b e OPERABLE t o e n s u r e t h a t n o s i n g l e in s t r u m e n t f a i 1 u r e c a n p r e c l ude t h e ECCS f u n c t i o n . Per f o o t n o t e ( a ) t o T a b l e 3 . 3 . 5 . 1 - 1 , t h i s ECCS F u n c t i o n i s o n l y r e q u i r e d t o b e OPERABLE i n MODES 4 and 5 whenever t h e a s s o c i a t e d ECCS i s r e q u i r e d t o b e OPERABLE p e r LCO 3.5.2. R e f e r t o LCO 3 . 5 . 1 and LCO 3.5.2 f o r A p p l i c a b i l i t y Bases f o r t h e l o w p r e s s u r e ECCS s u b s y s t e m s .

1.e. 1.f. C o r e S p r a y Pump S t a r t - T i m e Delay Relay The p u r p o s e o f t h i s t i m e d e l a y i s t o s t a g g e r t h e s t a r t o f t h e CS pumps t h a t a r e i n each o f D i v i s i o n s I and 11 t o p r e v e n t o v e r l o a d i n g t h e power s o u r c e , T h i s F u n c t i o n i s n e c e s s a r y when power i s b e i n g s u p p l i e d f r o m t h e o f f s i t e s o u r c e s o r t h e s t a n d b y power s o u r c e s (DG). The CS Pump S t a r t - T i m e D e l a y R e l a y s a r e assumed t o b e OPERABLE i n t h e a c c i d e n t and t r a n s i e n t a n a l y s e s r e q u i r i n g ECCS i n i t i a t i o n .

T h a t i s , t h e a n a l y s e s assume t h a t t h e pumps w i l l i n i t i a t e when r e q u i r e d and excess l o a d i n g w i l l n o t cause f a i l u r e o f t h e power s o u r c e s .

(continued)

PBAPS UNIT 3 B 3.3-104 R e v i s i o n No.

ECCS I n s t r u m e n t a t i o n B 3.3.5.1 BASES APP L I CABLE 1.e. 1.f. Core Spray Pump S t a r t - T i m e Delay Relay SAFETY ANALYSES? ( c o n t i n u e d )

LCO, and APP~ICABILITY There a r e e i g h t Core Spray Pump S t a r t - T i m e Delay R e l a y s ,

two i n each o f t h e CS pump s t a r t l o g i c c i r c u i t s ( o n e f o r when o f f s i t e power i s a v a i l a b l e and one f o r when o f f s i t e power i s n o t a v a i l a b l e ) . One o f each t y p e o f t i m e d e l a y r e l a y i s d e d i c a t e d t o a s i n g l e pump s t a r t l o g i c , such t h a t a s i n g l e f a i l u r e o f a Core Spray Pump S t a r t - T i m e D e l a y Relay w i l l n o t r e s u l t i n t h e f a i l u r e o f more t h a n one CS pump. I n t h i s c o n d i t i o n , t h r e e o f t h e f o u r CS pumps w i l l r e m a i n OPERABLE; t h u s , t h e s i n g l e f a i l u r e c r i t e r i o n i s met (i.e.,

l o s s o f one i n s t r u m e n t does n o t p r e c l u d e ECCS i n i t i a t i o n ) .

The A l l o w a b l e Value f o r t h e Core Spray Pump S t a r t - T i m e D e l a y Relays i s chosen t o be l o n g enough so t h a t t h e power s o u r c e w i l l n o t be o v e r l o a d e d and s h o r t enough so t h a t ECCS o p e r a t i o n i s n o t degraded.

Each channel o f Core Spray Pump S t a r t - T i m e D e l a y R e l a y F u n c t i o n i s r e q u i r e d t o be OPERABLE o n l y when t h e a s s o c i a t e d CS subsystem i s r e q u i r e d t o be OPERABLE. Per f o o t n o t e ( a )

t o T a b l e 3 . 3 . 5 . 1 - 1 , t h i s ECCS F u n c t i o n i s o n l y r e q u i r e d t o be OPERABLE i n MODES 4 and 5 whenever t h e a s s o c i a t e d ECCS i s r e q u i r e d t o be OPERABLE p e r LCO 3 . 5 . 2 . R e f e r t o LCO 3.5.1 and LCO 3 . 5 . 2 f o r A p p l i c a b i l i t y Bases f o r t h e C S subsystems.

2 .d. R e a c t o r Pressure-Low Low ( R e d r c u l a t i o n D i s c h a r q e Valve Permissive)

Low r e a c t o r p r e s s u r e s i g n a l s a r e used as p e r m i s s i v e s f o r r e c i r c u l a t i o n d i s c h a r g e v a l v e c l o s u r e . T h i s ensures t h a t t h e L P C I subsystems i n j e c t i n t o t h e p r o p e r RPV l o c a t i o n assumed i n t h e s a f e t y a n a l y s i s . The R e a c t o r Pressure-Low Low i s one o f t h e F u n c t i o n s assumed t o be OPERABLE and capable o f c l o s i n g t h e v a l v e d u r i n g t h e t r a n s i e n t s analyzed i n References 1 and 3. The c o r e c o o l i n g f u n c t i o n o f t h e ECCS, a l o n g w i t h t h e scram a c t i o n o f t h e RPS, ensures t h a t t h e f u e l peak c l a d d i n g t e m p e r a t u r e remains below t h e l i m i t s o f 10 CFR 50.46. The Reactor Pressure-Low Low F u n c t i o n i s d i r e c t l y assumed i n t h e a n a l y s i s o f t h e r e c i r c u l a t i o n l i n e break (Ref. 4 ) .

The Reactor Pressure-Low Low s i g n a l s a r e i n i t i a t e d f r o m f o u r p r e s s u r e t r a n s m i t t e r s t h a t sense t h e r e a c t o r p r e s s u r e .

The A l l o w a b l e Value i s chosen t o e n s u r e t h a t t h e v a l v e s c l o s e p r i o r t o commencement of LPCI i n j e c t i o n f l o w i n t o t h e c o r e , as assumed i n t h e s a f e t y a n a l y s i s .

( c o n t inued)

PBAPS U N I T 3 B 3.3-105 R e v i s i o n No.

ECCS I n s t r u m e n t a t i o n B 3.3.5.1 BASES APPLICABLE (continued)

SAFETY ANALYSES, LCO, and Two c h a n n e l s o f t h e R e a c t o r V e s s e l Shroud L e v e l - L e v e l 0 A P P L ~ C A BLITY I F u n c t i o n a r e o n l y r e q u i r e d t o b e OPERABLE i n MODES 1, 2, and 3 . I n MODES 4 and 5 , t h e s p e c i f i e d i n i t i a t i o n t i m e o f t h e LPCI subsystems i s n o t assumed, and o t h e r a d m i n i s t r a t i v e c o n t r o l s a r e adequate t o c o n t r o l t h e valves associated w i t h t h i s F u n c t i o n ( s i n c e t h e systems t h a t t h e v a l v e s a r e opened f o r a r e n o t r e q u i r e d t o b e OPERABLE i n MODES 4 and 5 and a r e normally n o t used).

The p u r p o s e o f t h i s t i m e d e l a y i s t o s t a g g e r t h e s t a r t o f t h e LPCI pumps t h a t a r e i n e a c h o f D i v i s i o n s I and 11, t o p r e v e n t o v e r l o a d i n g t h e power s o u r c e . T h i s f u n c t i o n i s o n l y n e c e s s a r y when power i s b e i n g s u p p l i e d f r o m o f f s i t e s o u r c e s .

The LPCI pumps s t a r t s i m u l t a n e o u s l y w i t h n o t i m e d e l a y as soon as t h e s t a n d b y s o u r c e i s a v a i l a b l e . The LPCI Pump S t a r t - T i m e D e l a y R e l a y s a r e assumed t o b e OPERABLE i n t h e a c c i d e n t and t r a n s i e n t a n a l y s e s r e q u i r i n g ECCS i n i t i a t i o n .

T h a t i s , t h e a n a l y s e s assume t h a t t h e pumps w i l l i n i t i a t e when r e q u i r e d and e x c e s s l o a d i n g w i l l n o t c a u s e f a i l u r e o f t h e power s o u r c e s .

T h e r e a r e e i g h t LPCI Pump S t a r t - T i m e D e l a y R e l a y s , t w o i n e a c h o f t h e RHR pump s t a r t l o g i c c i r c u i t s . Two t i m e d e l a y r e l a y s a r e d e d i c a t e d t o a s i n g l e pump s t a r t l o g i c . B o t h t i m e r s i n t h e RHR pump s t a r t l o g i c w o u l d have t o f a i l t o p r e v e n t an RHR pump f r o m s t a r t i n g w i t h i n t h e r e q u i r e d t i m e ;

t h e r e f o r e , t h e l o w p r e s s u r e ECCS pumps w i l l r e m a i n OPERABLE; t h u s , t h e s i n g l e f a i l u r e c r i t e r i o n i s met ( L e . , l o s s o f one i n s t r u m e n t does n o t p r e c l u d e ECCS i n i t i a t i o n ) . The A l l o w a b l e V a l u e s f o r t h e LPCI Pump S t a r t - T i m e D e l a y R e l a y s a r e chosen t o b e l o n g enough so t h a t most o f t h e s t a r t i n g t r a n s i e n t o f t h e f i r s t pump i s c o m p l e t e b e f o r e s t a r t i n g t h e second pump on t h e same 4 kV emergency bus and s h o r t enough so t h a t ECCS o p e r a t i o n i s n o t d e g r a d e d .

Each ~ h a n n e lo f LPCI Pump S t a r t - T i m e D e l a y R e l a y F u n c t i o n i s r e q u i r e d t o b e OPERABLE o n l y when t h e a s s o c i a t e d LPCI s u b s y s t e m i s r e q u i r e d t o b e OPERABLE. Per f o o t n o t e ( a ) t o T a b l e 3 . 3 . 5 . 1 - 1 , t h i s ECCS F u n c t i o n i s o n l y r e q u i r e d t o b e OPERABLE i n MODES 4 and 5 whenever t h e a s s o c i a t e d ECCS i s r e q u i r e d t o be OPERA~LE p e r LCO 3 . 5 . 2 . R e f e r t o LCO 3 . 5 . 1 and LCO 3.5.2 f o r A p p l i c a b i l i t y Bases f o r t h e LPCI subsystems.

I c o n t inued 1 PBAPS U N I T 3 B 3.3-107 R e v i s i o n No,

Primary Containment I s o l a t i o n Instrumentation B 3.3.6.1 BASES BAC K G R O U ~ D 5. Reactor Water Cleanup Svstem I s o l a t i o n (continued)

System I s o l a t i o n Function receives input from two channels with each channel in one t r i p system using a one-out-of-one l o g i c . When e i t h e r SLC pump i s s t a r t e d remotely, one channel t r i p s the inboard i sol a t i on valve a n d one channel i sol a t e s t h e o u t b o a r d i sol a t i on valves.

The RWCU I s o l a t i o n Function i s o l a t e s the inboard a n d o u t b o a r d R W C U pump suction penetration a n d t h e outboard valve a t t h e RWCU connection t o r e a c t o r feedwater,

6. S h u t d o w n Coolins System I s o l a t i o n The Reactor Vessel Water Level -Low (Level 3 ) Function receives input from four r e a c t o r vessel water level channels. The outputs from t h e channels a r e connected t o a one-out-of-two taken twice l o g i c , which i s o l a t e s b o t h valves on the R H R shutdown cooling pump suction p e n e t r a t i o n . The Reactor Pressure-Hi gh Functi on recei ves input from two channels, with each channel in one t r i p system using a one-out-of-one l o g i c . Each t r i p system i s connected t o b o t h valves on the R H R shutdown cooling pump suction p e n e t r a t i o n .

7. Feedwater Recirculation I s o l a t i o n The Reactor Pressure-High Function receives inputs from four channels. The outputs from the four channels a r e connected i n t o a one-out-of-two taken twice l o g i c which i s o l a t e s t h e feedwater r e c i r c u l a t i o n valves.

8. Traversinq Incore Probe S~ystemI s o l a t i o n The Reactor Vessel Water Level-Low, Level 3 I s o l a t i o n Function receives input from two r e a c t o r vessel water level channels. The outputs from the r e a c t o r vessel water level channels a r e connected i n t o one two-out-of-two l o g i c t r i p system. The Drywell Pressure-High I s o l a t i o n function receives input from two drywell pressure channels. The outputs from t h e drywell pressure channels a r e connected i n t o one two-out-of-two l o g i c t r i p system.

When e i t h e r I s o l a t i o n Function a c t u a t e s , the T I P d r i v e mechanisms will withdraw the TIPs, i f i n s e r t e d , a n d c l o s e t h e T I P system i s o l a t i o n ball valves when t h e TIPs a r e f u l l y withdrawn. The redundant T I P system i s o l a t i o n valves a r e manual shear valves.

T I P System I s o l a t i o n Functions i s o l a t e the Group I I ( D ) T I P valves ( i s o l a t i o n b a l l v a l v e s ) .

(continued) I PBAPS UNIT 3 8 3.3-145 Revision No.

Primary Containment Isolation Instrumentation B 3.3.6.1 BASES APPLICABLE The i s o l a t i o n s i g n a l s generated by the primary containment SAFETY A N A L Y S E S , i s o l a t i o n instrumentation are i m p l i c i t l y assumed in the LCO, a n d s a f e t y analyses of References 1 a n d 3 t o i n i t i a t e closure A P P L I CAB I L ITY of valves t o l i m i t o f f s i t e doses, Refer t o LCO 3.6.1.3, "Primary Containment Isolation Valves (PCIVs) ," Applicable Safety Analyses Bases f o r more d e t a i l of the s a f e t y analyses.

Primary containment i s o l a t i o n instrumentation s a t i s f i e s Criterion 3 of the NRC Policy Statement. Certain instrumentation Functions are retained f o r other reasons a n d a r e described below i n the individual Functions discussion.

The O P E R A B I L I T Y of the primary containment instrumentation i s dependent on the OPERABILITY of the individual instrumentation channel Functions specified in Table 3.3.6.1-1. Each Function must have a required number of OPERABLE channels, with t h e i r s e t p o i n t s within t h e specified Allowable Values, where appropriate. A channel i s inoperable i f i t s actual t r i p s e t t i n g i s n o t within i t s requi red A1 1 owabl e Val ue. The actual setpoi n t i s cal i brated consistent with applicable s e t p o i n t methodology assumptions.

Allowable Values, where applicable, are specified f o r each Primary Containment Isolation Function specified in the t o i n t s are specified in the s e t p o i n t TRe t r i p s e t p o i n t s a r e selected t o ensure n t s do n o t exceed the Allowable Value between ion w i t h a t r i p s e t t i n g l e s s t p o i n t , b u t within i t s e . Trip s e t p o i n t s a r e those predetermined values of o u t p u t a t which a n action s h o u l d take place. The s e t p o i n t s are compared t o the actual process parameter ( e . g , , reactor vessel water l e v e l ) , a n d when the measured o u t p u t value of t h e process parameter exceeds the s e t p o i n t , the associated device ( e . g . , t r i p u n i t ) changes s t a t e . The a n a l y t i c or design l i m i t s a r e derived from the l i m i t i n g values o f the process parameters obtained from the s a f e t y analysis or other appropriate documents. The Allowable Values are derived from t h e a n a l y t i c or design l i m i t s , corrected f o r c a l i b r a t i o n ,

process, a n d instrument e r r o r s . The t r i p s e t p o i n t s a r e determined from analytical or design l i m i t s , corrected for c a l i b r a t i o n , process, a n d instrument e r r o r s , as well a s ,

instrument d r i f t . I n selected cases, the Allowable Values a n d t r i p s e t o i n t s are determined by engineering judgement or hi s t o r i c a l y accepted p r a c t i c e re1 a t i ve t o the intended function of the channel. The t r i p s e t p o i n t s determined in t h i s manner provide adequate protection by assuring instrument a n d process u n c e r t a i n t i e s expected f o r t h e environments during the operating time o f the associated channels a r e accounted f o r .

Certain Emergency Core Cooling Systems ( E G C S ) a n d R C I C valves ( e . g . , minimum flow) also serve the d u a l function of automatic PCIVs. The s i g n a l s t h a t i s o l a t e these valves are a1 so associated wi t h the automatic i ni t i a t i on o f t h e ECCS (continued)

PBAPS UNIT 3 B 3.3-146 Revision No.

Primary Containment Isolation Instrumentation B 3.3.6.1 BASES APPLICABLE 6 . b . Reactor Vessel Water Level-Low (Level 3 ) (continued)

SAFETY ANALYSES ,

LCO, and The Reactor Vessel Water Level -Low (Level 3 ) A1 lowable APPLICABILITY Value was chosen t o be the same as the RPS Reactor Vessel Water Level-Low (Level 3 ) Allowable Value ( L C O 3 . 3 . 1 . 1 ) ,

since the c a p a b i l i t y t o cool the fuel may be threatened.

The Reactor Vessel Water Level -Low (Level 3 ) Function i s o n l y required t o be O P E R A B L E in MODES 3, 4 , a n d 5 t o prevent t h i s potential flow p a t h from lowering the reactor vessel level t o the t o p of the f u e l . I n MODES 1 a n d 2 , another i s o l a t i o n ( i . e . , Reactor Pressure-High) a n d administrative controls ensure t h a t t h i s flow p a t h remains i s o l a t e d t o prevent unexpected l o s s of inventory v i a t h i s flow p a t h .

This Function i s o l a t e s b o t h R H R shutdown cooling pump suction valves.

Feedwater Recirculation Isolation 7.a. Reactor Pressure-Hiqh The Reactor Pressure-High Function i s provided t o i s o l a t e the feedwater r e c i r c u l a t i o n l i n e . This interlock i s provided o n l y f o r equipment protection t o prevent a n intersystem LOCA scenario, a n d c r e d i t f o r the i n t e r l o c k i s n o t assumed in the accident or t r a n s i e n t analysis in the UFSAR.

The Reactor Pressure-High s i g n a l s are i n i t i a t e d from four t r a n s m i t t e r s t h a t a r e connected t o d i f f e r e n t taps on the RPV. Four channels of Reactor Pressure-High Function are available a n d are required t o be O P E R A B L E t o ensure t h a t no single i nstrument f a i 7 ure can precl ude the i sol ation function. The Function i s o n l y required t o be O P E R A B L E in MODES 1, 2 , a n d 3 , since these are the o n l y MODES i n which the reactor can be pressurized; thus, e q u i p ~ e n tprotection i s needed. The Allowable Value was chosen t o be low enough t o protect the system equipment from overpressurization.

Thi s Function i sol a t e s the feedwater reci rcul a t i on valves.

Traversinq Incore Probe S,ystem Is01 ation I 8.a. Reactor Vessel Water Level -Low, Level 3 I Low RPV water level indicates t h a t the capability t o cool the fuel may be threatened. The valves whose penetrations communicate with the primary contai nrnent are i sol ated t o (continued) I PBAPS UNIT 3 B 3.3-160 Revision No.

P r i m a r y ~ o n t a i n m e n tI s 0 1 a t i o n I n s t r u m e n t a t i o n B 3.3.6.1 BASES AP P L I CAB LE 8.a. R e a c t o r Vessel Water Level -Low, L e v e l 3 ( c o n t i n u e d )

SAFETY ANALYSES, LCO, and l i m i t t h e r e l e a s e o f f i s s i o n p r o d u c t s . The i s o l a t i o n o f t h e APPLICABILITY p r i m a r y c o n t a i n m e n t on L e v e l 3 s u p p o r t s a c t i o n s t o e n s u r e t h a t (continued) o f f s i t e dose l i m i t s o f 10 CFR 100 a r e n o t exceeded. The R e a c t o r Vessel Water Level -Low, L e v e l 3 F u n c t i o n a s s o c i a t e d w i t h i s o l a t i o n i s i m p l i c i t l y assumed i n t h e FSAR a n a l y s i s as t h e s e l e a k a g e p a t h s a r e assumed t o be i s o l a t e d p o s t LOCA.

R e a c t o r Vessel Water Level-Low, Level 3 s i g n a l s a r e i n i t i a t e d f r o m l e v e l t r a n s m i t t e r s t h a t sense t h e d i f f e r e n c e between t h e p r e s s u r e due t o a c o n s t a n t column o f w a t e r ( r e f e r e n c e l e g ) and t h e p r e s s u r e due t o t h e a c t u a l w a t e r l e v e l ( v a r i a b l e l e g ) i n t h e v e s s e l . Two c h a n n e l s o f R e a c t o r Vessel M a t e r L e v e l -Low, L e v e l 3 F u n c t i o n a r e a v a i l a b l e and a r e r e q u i r e d t o be OPERABLE t o e n s u r e t h a t no s i n g l e i n s t r u m e n t f a i l u r e can i n i t i a t e an i n a d v e r t e n t i s o l a t i o n a c t u a t i o n . The i s o l a t i o n f u n c t i o n i s e n s u r e d b y t h e manual shear v a l v e i n each p e n e t r a t i o n .

The R e a c t o r Vessel Water Level -Low, L e v e l 3 A1 l o w a b l e Value was chosen t o be t h e same as t h e RPS L e v e l 3 scram A l l o w a b l e Value (LCO 3 . 3 . 1 . 1 ) , s i n c e i s o l a t i o n o f t h e s e v a l v e s i s n o t c r i t i c a l t o o r d e r l y p l ant shutdown.

T h i s F u n c t i o n i s o l a t e s t h e Group I U D ) T I P v a l v e s .

8.b. Drywell Pressure-Hish H i g h d r y w e l l p r e s s u r e can i n d i c a t e a b r e a k i n t h e RCPB i n s i d e t h e p r i m a r y c o n t a i n m e n t . The i s o l a t i o n o f some o f t h e p r i m a r y c o n t a i n m e n t is o l a t i o n v a l v e s on h i g h d r y w e l l p r e s s u r e s u p p o r t s a c t i o n s t o e n s u r e t h a t o f f s i t e dose l i m i t s o f 10 CFR 100 a r e n o t exceeded The D r y w e l l P r e s s u r e - H i gh F u n c t i o n , a s s o c i a t e d w i t h i s o l a t i o n o f t h e primary containment, i s i m p l i c i t l y assumed i n t h e FSAR a c c i d e n t a n a l y s i s as t h e s e l e a k a g e p a t h s a r e assumed t o be i s o l a t e d p o s t LOCA.

High d r y w e l l pressure s i g n a l s a r e i n i t i a t e d f r o m pressure t r a n s m i t t e r s t h a t sense t h e p r e s s u r e i n t h e d r y w e l l . Two channels o f Drywell Pressure-High per Function a r e a v a i l a b l e and a r e r e q u i r e d t o be OPERABLE t o e n s u r e t h a t no s i n g l e i n s t r u m e n t f a i l u r e can i n i t i a t e an i n a d v e r t e n t a c t u a t i o n . The i s o l a t i o n f u n c t i o n i s ensured b y t h e manual shear v a l v e i n each penetration.

The a l l o w a b l e Value was s e l e c t e d t o be t h e same as t h e ECCS D r y w e l l P r e s s u r e - H i g h A l l o w a b l e Value (LCO 3.3.5.11, since t h i s may be i n d i c a t i v e o f a LOCA i n s i d e p r i m a r y c o n t a i n m e n t .

T h i s F u n c t i o n i s o l a t e s t h e Group I I ( D ) T I P v a l v e s .

(continued)

PBAPS UNIT 3 B 3.3-160a R e v i s i o n No. 1

Primary Containment Is01 ation Instrumentation B 3.3.6.1 BASES (continued)

ACTIONS The ACTIONS are modified by two Notes. Note 1 allows penetration flow path(s) t o be unisolated intermittently under administrative controls. These controls consist of stationing a dedicated operator a t the controls of the valve, who i s i n continuous communication with the control room. I n t h i s way, the penetration can be rapidly isolated when a need for primary containment isolation i s indicated. Note 2 has been provided t o modify the ACTIONS related t o primary containment isolation instrumentation channels. Section 1 . 3 , Completion Times, specifies t h a t once a Condition has been entered, subsequent di vi s i ons, subsystems, components, o r vari a b l es expressed i n the Condition, discovered t o be inoperable or n o t within l i m i t s , will n o t r e s u l t in separate entry i n t o the Condition.

Section 1.3 also specifies t h a t Required Actions of the Condition continue t o a p p l y for each additional f a i l u r e , with Completion Times based on i n i t i a l entry into the Condition.

However, the Required Actions for inoperable primary containment isolation instrumentation channels provide appropriate compensatory measures for separate inoperable channels. As such, a Note has been provided t h a t allows separate Condition entry for each inoperable primary containment isolation instrumentation channel.

Because o f the d i v e r s i t y of sensors available t o provide i s o l a t i o n s i g n a l s a n d the redundancy of the i s o l a t i o n design, a n allowable o u t of service time of 1 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months f o r Functions l . d , L a , a n d 2 . b a n d 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months f o r Functions other t h a n Functions l . d , 2 . a , a n d 2 . b has been shown t o be acceptable (Refs. 6 a n d 7 ) t o permit r e s t o r a t i o n o f any inoperable channel t o O P E R A B L E s t a t u s . This o u t of service time i s only acceptable provided the associated Function i s s t i l l maintaining i s o l a t i o n c a p a b i l i t y ( r e f e r t o Required Action B . l Bases). If the inoperable channel cannot be restored t o O P E R A B L E s t a t u s within the allowable o u t of service time, the channel must be placed in the tripped condition per Required Action A . 1 . P1 acing the inoperable channel in t r i p would conservatively compensate f o r the i noperabi 1 i t y , r e s t o r e capabi 1 i t y t o accommodate a s i ngl e f a i l u r e , a n d a l l o w operation t o continue with no f u r t h e r r e s t r i c t i o n s . Alternately, i f i t i s n o t desired t o place the channel in t r i p ( e . g . , as in the case where placing the inoperable channel i n t r i p would r e s u l t in a n i s o l a t i o n ) ,

Condition C must be entered a n d i t s Required Action taken.

(continued)

PBAPS UNIT 3 B 3.3-161 Revision No.

ECCS- O p e r a t i ng B 3.5.1 BASES APPLICABLE T h i s LCO h e l p s t o ensure t h a t t h e f o l l o w i n g acceptance SAFETY ANALYSES c r i t e r i a f o r t h e ECCS, e s t a b l i s h e d by 10 C F R 50.46 ( R e f . 81, (continued) w i l l be met f o l l o w i n g a LOCA, assuming t h e w o r s t case s i n g l e a c t i v e component f a i l u r e i n t h e ECCS:

a. Maximum f u e l e l e m e n t c l a d d i n g t e m p e r a t u r e i s I; 2200°F; b, Maximum c l a d d i n g o x i d a t i o n i s r; 0.17 t i m e s t h e t o t a l cladding thickness before oxidation;

c. Maximum hydrogen g e n e r a t i o n f r o m a z i r c o n i u m w a t e r r e a c t i o n i s I; 0.01 t i m e s t h e h y p o t h e t i c a l amount t h a t would be g e n e r a t e d i f a l l o f t h e m e t a l i n t h e c l a d d i n g surrounding the f u e l , excluding the cladding s u r r o u n d i n g t h e plenum volume, were t o r e a c t ;

d. The c o r e i s m a i n t a i n e d i n a c o o l a b l e geometry; and

e. Adequate 1 ong t e r m c o o l ing capabi 1 it y is m a i n t a i ned.

The l i m i t i n g s i n g l e f a i l u r e s a r e d i s c u s s e d i n Reference 7.

The r e m a i n i n g OPERABLE ECCS subsystems p r o v i d e t h e c a p a b i 1 it y t o a d e q u a t e l y c o o l t h e c o r e and p r e v e n t e x c e s s i v e f u e l damage.

The ECCS s a t i s f y C r i t e r i o n 3 o f t h e NRC P o l i c y S t a t e m e n t .

LCO Each ECCS i n j e c t i o n / s p r a y subsystem and f i v e ADS v a l v e s a r e r e q u i r e d t o be OPERABLE. The ECCS i n j e c t i o n / s p r a y subsystems a r e d e f i n e d as t h e two CS subsystems, t h e two LPCI subsystems, and one H P C I System. The l o w p r e s s u r e ECCS i n j e c t i o n / s p r a y subsystems a r e d e f i n e d as t h e two CS subsystems and t h e two LPCI subsystems.

W i t h l e s s t h a n t h e r e q u i r e d number o f ECCS subsystems OPERABLE, t h e p o t e n t i a l e x i s t s t h a t d u r i n g a l i m i t i n g d e s i g n b a s i s LOCA c o n c u r r e n t w i t h t h e w o r s t case s i n g l e f a i l u r e ,

t h e l i m i t s s p e c i f i e d i n Reference 8 c o u l d be exceeded. A l l ECCS subsystems must t h e r e f o r e be OPERABLE t o s a t i s f y t h e s i n g l e f a i l u r e c r i t e r i o n r e q u i r e d by Reference 8.

As n o t e d , LPCI subsystems may be c o n s i d e r e d OPERABLE d u r i n g a l i g n m e n t and o p e r a t i o n f o r decay h e a t removal when b e l o w t h e I

a c t u a l RMR shutdown c o o l i n g i s o l a t i o n p r e s s u r e i n MODE 3, i f capable o f being manually r e a l i g n e d (remote o r l o c a l ) t o t h e

( c o n t i nued)

PBAPS UNIT 3 B 3.5-5 R e v i s i o n No. i

ECCS - 0 p e r a t i ng B 3.5.1 BASES LCO LPCI mode and n o t o t h e r w i s e i n o p e r a b l e . A l i g n m e n t and (continued) o p e r a t i o n f o r decay h e a t removal i n c l u d e s when t h e r e q u i r e d RWR pump i s n o t o p e r a t i n g o r when t h e system i s r e a l i g n e d f r o m o r t o t h e RHR s h u t d o ~ nc o o l i n g mode. T h i s a l l o w a n c e i s necessary s i n c e t h e RHR System may be r e q u i r e d t o o p e r a t e i n t h e shutdown c o o l i n g mode t o remove decay h e a t and s e n s i b l e h e a t f r o m t h e r e a c t o r . A t t h e s e l o w p r e s s u r e s and decay h e a t 1eve1 s , a reduced compl ement o f ECCS subsystems s h o u l d provide the required core cooling, thereby allowing o p e r a t i o n o f RHR shutdown c o o l i n g when n e c e s s a r y .

A P ~ L I C A BLITY I A l l ECCS subsystems a r e r e q u i r e d t o be OPERABLE d u r i n g MODES 1, 2, and 3, when t h e r e i s c o n s i d e r a b l e e n e r g y i n t h e r e a c t o r c o r e and c o r e c o o l i n g would be r e q u i r e d t o p r e v e n t f u e l damage i n t h e e v e n t o f a b r e a k i n t h e p r i m a r y system p i p i n g . I n MODES 2 and 3, when r e a c t o r steam dome p r e s s u r e i s 5 150 p s i g , H P C I i s n o t r e q u i r e d t o be OPERABLE because t h e l o w p r e s s u r e E C C S subsystems can p r o v i d e s u f f i c i e n t f l o w below t h i s p r e s s u r e . I n MODES 2 and 3, when r e a c t o r steam dome p r e s s u r e i s S 100 p s i g , ADS i s n o t r e q u i r e d t o be OPERABLE because t h e l o w p r e s s u r e ECCS subsystems can p r o v i d e s u f f i c i e n t f l o w below t h i s p r e s s u r e . ECCS r e q u i r e m e n t s f o r MODES 4 and 5 a r e s p e c i f i e d i n LCO 3.5.2, I' ECC S - S h u t d own. I' ACTIONS A Note p r o h i b i t s t h e a p p l i c a t i o n o f LCO 3.0.4.b t o an i n o p e r a b l e H P C I subsystem, There i s an i n c r e a s e d r i s k a s s o c i a t e d w i t h e n t e r i n g a MODE o r o t h e r s p e c i f i e d c o n d i t i o n i n t h e A p p l i c a b i l i t y w i t h an i n o p e r a b l e H P C I subsystem and t h e p r o v i s i o n s o f LCO 3.0,4,b, w h i c h a l l o w e n t r y i n t o a MODE or other specified condition i n the Applicability with the LCO n o t met a f t e r performance o f a r i s k assessment a d d r e s s i n g i n o p e r a b l e systems and components, s h o u l d n o t be a p p l i e d i n t h i s circumstance.

I f any one l o w p r e s s u r e ECCS i n j e c t i o n / s p r a y subsystem i s i n o p e r a b l e , o r i f one LPCI pump i n each subsystem i s i n o p e r a b l e , a l l i n o p e r a b l e subsystems must be r e s t o r e d t o OPERABLE s t a t u s w i t h i n 7 days (e.g., i f one LPCI pump i n each subsystem i s i n o p e r a b l e , b o t h must be r e s t o r e d w i t h i n 7 days). I n t h i s C o n d i t i o n , t h e r e m a i n i n g OPERABLE subsystems p r o v i d e adequate c o r e c o o l i n g d u r i n g a LOCA.

However, o v e r a l l ECCS r e l i a b i l i t y i s reduced, because a s i n g l e f a i l u r e i n one o f t h e r e m a i n i n g OPERA~LE subsystems, c o n c u r r e n t w i t h a LOCA, may r e s u l t i n t h e ECCS n o t b e i n g a b l e t o p e r f o r m i t s i n t e n d e d s a f e t y f u n c t i o n . The 7 day C o m p l e t i o n Time i s based on a r e l i a b i l i t y s t u d y ( R e f . 9 )

t h a t e v a l u a t e d t h e i m p a c t on ECCS a v a i l a b i l i t y , assuming v a r i o u s components and subsystems were t a k e n o u t o f s e r v i c e .

The r e s u l t s were used t o c a l c u l a t e t h e average a v a i l a b i l i t y o f ECCS equipment needed t o m i t i g a t e t h e consequences o f a LOCA as a f u n c t i o n o f a l l o w e d outage t i m e s ( i . e . , C o m p l e t i o n Times).

(continued1 PBAPS U N I T 3 B 3.5-6 R e v i s i o n No,

ECCS - Operati ng B 3.5.1 BASES SURVEILLA~CE REQUIRE~E~TS (continued)

SR 3.5.1.3 V e r i f i c a t i o n every 31 d a y s t h a t ADS nitrogen supply header pressure i s 2 85 psig ensures adequate a i r pressure f o r r e l i a b l e A D S o p e r a t i o n . The accumulator on each ADS valve provides pneumatic pressure f o r valve a c t u a t i o n . The design pneumatic supply pressure requirements f o r t h e accumulator a r e such t h a t , following a f a i l u r e of t h e pneumatic supply t o t h e accumulator, a t l e a s t two valve a c t u a t i o n s can occur with the drywell a t 70% of design pressure (Ref. 1 0 ) . The E C C S s a f e t y a n a l y s i s assumes o n l y one a c t u a t i o n t o achieve t h e d e p r e s s u r i z a t i o n required f o r operation of t h e low pressure E C C S . This minimum required pressure of 2 85 p s i s i s provided by t h e ADS instrument a i r supply. The 31 day Frequency takes i n t o consideration a d m i n i s t r a t i v e c o n t r o l s over operation of t h e a i r system a n d alarms f o r low a i r pressure.

SR 3.5.1.4 V e r i f i c a t i o n every 31 days t h a t t h e L P C I c r o s s t i e valve i s closed a n d power t o i t s operator i s disconnected ensures t h a t each L P C I subsystem remains independent a n d a f a i l u r e of the flow p a t h in one subsystem will n o t a f f e c t t h e flow p a t h of the o t h e r L P C I subsystem. Acceptable methods of removing power t o t h e operator include de-energizing breaker control power or racking o u t or removing t h e breaker. If t h e L P C I c r o s s t i e valve i s open or power h a s n o t been removed from t h e valve o p e r a t o r , b o t h L P C I subsystems must be considered inoperable. The 31 day Frequency has been

( c o n t i nued 1 PBAPS UNIT 3 B 3.5-11 Revision No.

ECCS - Shutdown B 3.5.2 BASES LCO As n o t e d , one LPCI subsystem may be c o n s i d e r e d OPERABLE

( c o n t inued ) d u r i n g a l i g n m e n t and o p e r a t i o n f o r decay h e a t removal i f capable o f b e i n g manually r e a l i g n e d (remote o r l o c a l ) t o t h e LPCI mode and i s n o t o t h e r w i s e i n o p e r a b l e . A l i g n m e n t and o p e r a t i o n f o r decay h e a t r e m o ~ a l i n c l u d e s when t h e r e q u i r e d RHR pump i s n o t o p e r a t i n g o r when t h e system i s r e a l i g n e d f r o m o r t o t h e RHR shutdown c o o l i n g mode. T h i s a l l o w a n c e i s n e c e s s a r y s i n c e t h e RWR System may be r e q u i r e d t o o p e r a t e i n t h e shutdown c o o l i n g mode t o remove decay h e a t and s e n s i b l e h e a t f r o m t h e r e a c t o r . Because o f l o w p r e s s u r e and l o w t e m p e r a t u r e c o n d i t i o n s i n MODES 4 and 5 , s u f f i c i e n t t i m e w i l l be a v a i l a b l e t o m a n u a l l y a l i g n and i n i t i a t e LPCI subsystem o p e r a t i o n t o p r o v i d e c o r e c o o l i n g p r i o r t o p o s t u l a t e d f u e l uncovery.

APPLICABILITY OPERABILITY o f t h e l o w p r e s s u r e ECCS i n j e c t i o n / s p r a y subsystems i s r e q u i r e d i n MODES 4 and 5 t o e n s u r e a d e q u a t e c o o l a n t i n v e n t o r y and s u f f i c i e n t h e a t removal c a p a b i l i t y f o r t h e i r r a d i a t e d f u e l i n t h e c o r e i n case o f an i n a d v e r t e n t d r a i n d o w n o f t h e v e s s e l . Requirements f o r ECCS OPRABILITY d u r i n g MODES 1, 2, and 3 a r e d i s c u s s e d i n t h e A p p l i c a b i l i t y s e c t i o n o f t h e Bases f o r LCO 3.5.1. ECCS subsystems a r e n o t r e q u i r e d t o be OPERABLE d u r i n g MODE 5 w i t h t h e s p e n t f u e l s t o r a g e p o o l g a t e s removed, t h e w a t e r l e v e l m a i n t a i n e d a t 2 458 i n c h e s above r e a c t o r p r e s s u r e v e s s e l i n s t r u m e n t z e r o

( 2 0 f t 11 i n c h e s above t h e RPV f l a n g e ) , and no o p e r a t i o n s w i t h a p o t e n t i a l f o r d r a i n i n g t h e r e a c t o r v e s s e l (OPDRVs) i n progress. This provides s u f f i c i e n t coolant i n v e n t o r y t o a l l o w o p e r a t o r a c t i o n t o t e r m i n a t e t h e i n v e n t o r y loss p r i o r t o f u e l u n c o v e r y i n case o f an i n a d v e r t e n t d r a i n d o w n .

The A u t o m a t i c D e p r e s s u r i z a t i o n System i s n o t r e q u i r e d t o be OPERABLE d u r i n g MODES 4 and 5 because t h e RPV p r e s s u r e i s s 100 p s i g , and t h e CS System and t h e LPCI subsystems can p r o v i d e c o r e c o o l i n g w i t h o u t any d e p r e s s u r i z a t i o n o f t h e p r i m a r y system.

The H i g h P r e s s u r e C o o l a n t I n j e c t i o n System i s n o t r e q u i r e d t o be OPERABLE d u r i n g MODES 4 and 5 s i n c e t h e l o w p r e s s u r e ECCS i n j e c t i o n / s p r a y subsystems can p r o v i d e s u f f i c i e n t f l o w t o t h e vessel.

ACTIONS A . 1 and BJ.

I f any one r e q u i r e d l o w p r e s s u r e ECCS i n j e c t i o n / s p r a y subsystem i s i n o p e r a b l e , an i n o p e r a b l e subsystem must b e r e s t o r e d t o OPERABLE s t a t u s i n 4 h o u r s . I n t h i s C o n d i t i o n ,

t h e r e m a i n i n g OPERABLE subsystem can p r o v i d e s u f f i c i e n t v e s s e l f l o o d i n g c a p a b i l i t y t o r e c o v e r f r o m an i n a d v e r t e n t v e s s e l draindown. However, o v e r a l l system r e 1 ia b i 1 it y is r e d u c e d because a s i n g l e f a i l u r e i n t h e r e m a i n i n g OPERABLE (continued)

PBAPS UNIT 3 B 3.5-19 Rntiicinn htn

ECCS- Shutdown B 3.5.2 BASES SURVEILLANCE (continued)

REQUIREMENTS The 1 2 h o u r F r e q u e n c y o f t h e s e SRs was d e v e l o p e d c o n s i d e r i n g o p e r a t i n g experience r e l a t e d t o suppression pool water l e v e l and CST w a t e r l e v e l v a r i a t i o n s and i n s t r u ~ e n td r i f t d u r i n g t h e a p p l i c a b l e MODES. F u r t h e r m o r e , t h e 12 h o u r F r e q u e n c y i s considered adequate i n view o f o t h e r i n d i c a t i o n s a v a i l a b l e i n t h e c o n t r o l room t o a l e r t t h e o p e r a t o r t o an abnormal s u p p r e s s i o n p o o l o r CST w a t e r l e v e l c o n d i t i o n .

SR 3.5.2.3. SR 3.5.2.5. and SR 3.5.2.6 The Bases p r o v i d e d f o r SR 3.5.1.1, SR 3.5.1.7, and SR 3.5.1.10 a r e a p p l i c a b l e t o SR 3 . 5 . 2 . 3 , SR 3.5.2.5, and SR 3.5.2.6, r e s p e c t i v e l y .

SR 3.5.7.4 V e r i f y i n g t h e c o r r e c t a l i g n m e n t f o r manual, power o p e r a t e d ,

and a u t o m a t i c v a l v e s i n t h e ECCS f l o w p a t h s p r o v i d e s assurance t h a t t h e p r o p e r f l o w p a t h s w i l l e x i s t f o r ECCS o p e r a t i o n . T h i s SR does n o t a p p l y t o v a l v e s t h a t a r e locked, sealed, o r otherwise secured i n p o s i t i o n , s i n c e t h e s e v a l v e s were v i f i e d t o be i n t h e c o r r e c t p o s i t i o n p r i o r t o locking, sealing, o r securing. A valve t h a t r e c e i v e s an i n i t i a t i o n s i g n a l i s a l l o w e d t o be i n a nonaccident p o s i t i o n provided t h e v a l v e w i l l a u t o m a t i c a l l y r e p o s i t i o n i n t h e p r o p e r s t r o k e t i m e . T h i s SR does n o t r e q u i r e any t e s t i n g o r v a l v e m a n i p u l a t i o n ; r a t h e r , i t i n v o l v e s v e r i f i c a t i o n t h a t those valves capable o f p o t e n t i a l l y being mispositioned are i n the correct position.

T h i s SR does n o t a p p l y t o v a l v e s t h a t c a n n o t b e i n a d v e r t e n t l y m i s a l i g n e d , s u c h as c h e c k v a l v e s . The 3 1 day Frequency i s a p p r o p r i a t e because t h e v a l v e s a r e o p e r a t e d u n d e r p r o c e d u r a l c o n t r o l and t h e p r o b a b i l i t y o f t h e i r b e i n g mispositioned d u r i n g t h i s time p e r i o d i s low.

(continued)

PBAPS U N I T 3 B 3.5-22 R e v i s i o n No.

ECCS-Shutdown B 3.5.2 BASES REFERENCES 1. NED0-20566A, "General E l e c t r i c C o ~ p a n yA n a l y t i c a l Model f o r L o s s - o f - C o o l a n t A c c i d e n t A n a l y s i s i n Accordance w i t h 10 CFR 50 A p p e n d i x K," September 1986.

PBAPS UNIT 3 B 3.5-23 R e v i s i o n No.

Primary Containment Air Lock B 3.6.1.2 BASES SR 3.6.1.2.1 (continued) t e s t i n g . The periodic t e s t i n g requi rements verify t h a t the a i r lock leakage does n o t exceed the allowed f r a c t i o n of the overall primary containment leakage r a t e . The Frequency i s required by the Primary Containment Leakage Rate Testing Program.

The SR has been modified by two Notes. Note 1 s t a t e s t h a t a n inoperable a i r lock door does n o t i n v a l i d a t e the previous successful performance o f the overall a i r lock leakage t e s t .

Thi s i s considered reasonable since e i t h e r ai r 1 ock door i s capable of providing a f i s s i o n product b a r r i e r in the event o f a DBA. Note 2 requires the r e s u l t s o f a i r lock leakage t e s t s t o be evaluated against the acceptance c r i t e r i a of the Primary Containment Leakage Rate Testing Program, 5 . 5 . 1 2 .

This ensures t h a t the a i r lock leakage i s properly accounted f o r in determining the combined Type B a n d C primary containment leakage.

SR 3.6.1.2.2 The ai r 1 ock i n t e r l o c k mechani sm i s designed t o prevent simultaneous opening o f b o t h doors in the a i r lock. Since b o t h the inner a n d outer doors of a n a i r lock are designed t o withstand the maximum expected post accident primary containment pressure, closure of e i t h e r door will support primary Containment O P E R A B I L I T Y . Thus, the i n t e r l o c k f e a t u r e supports primary containment O P E R A ~ I L I T Y whi 1 e the a i r lock i s being used f o r personnel t r a n s i t in a n d o u t of the Containment. Periodic t e s t i n g of t h i s i n t e r l o c k demonstrates t h a t the interlock will function as designed a n d t h a t simultaneous inner a n d outer door opening will n o t inadvertently occur. Due t o the purely mechanical nature of t h i s i n t e r l o c k , a n d given t h a t the interlock mechanism i s n o t normally challenged when primary containment i s used f o r entry a n d e x i t (procedures require s t r i c t adherence t o s i n g l e door opening), t h i s t e s t i s o n l y required t o be performed every 24 months. The 24 m o n t h Frequency i s based on the need t o perform t h i s Surveillance under the conditions t h a t apply during a plant outage, a n d the potential f o r l o s s of primary containment O P E R B I L I T Y i f the Surveillance were performed with the reactor a t power.

Operating experience has shown these components u s u a l l y pass the Surveillance when performed a t the 24 m o n t h Frequency.

The 24 m o n t h Frequency i s based on engineering judgment a n d i s considered adequate given t h a t the interlock i s n o t challenged during use o f the a i r l o c k .

(conti nued 1 PBAPS UNIT 3 B 3.6-12 Revision No.

PCIVS B 3.6.1.3 BASES ACTIONS A . 1 and A.2 (continued) a l l o w s a p e r i o d o f t i m e t o r e s t o r e t h e M S I V s t o OPERABLE status given the f a c t t h a t MSIV closure w i l l r e s u l t i n i s o l a t i o n o f t h e main steam l i n e ( s ) and a p o t e n t i a l f o r p l a n t shutdown.

For a f f e c t e d p e n e t r a t i o n s t h a t have been i s o l a t e d i n accordance w i t h R e q u i r e d A c t i o n A . 1 , t h e a f f e c t e d p e n e t r a t i o n f l o w p a t h ( s ) must be v e r i f i e d t o be i s o l a t e d on a p e r i o d i c b a s i s . T h i s i s necessary t o ensure t h a t p r i m a r y c o n t a i n m e n t p e n e t r a t i o n s r e q u i r e d t o be i s o l a t e d f o l l o w i n g an a c c i d e n t , and no l o n g e r c a p a b l e o f b e i n g a u t o m a t i c a l l y i s o l a t e d , w i l l be i n t h e i s o l a t i o n p o s i t i o n s h o u l d an e v e n t o c c u r . T h i s R e q u i r e d A c t i o n does n o t r e q u i r e any t e s t i n g o r device m a n i p u l a t i o n . Rather, i t i n v o l v e s v e r i f i c a t i o n t h a t t h o s e d e v i c e s o u t s i d e c o n t a i n m e n t and c a p a b l e o f p o t e n t i a l l y b e i n g m i s p o s i t i o n e d a r e i n t h e c o r r e c t p o s i t i o n . The C o m p l e t i o n Time o f "once p e r 3 1 days f o r i s o l a t i o n d e v i c e s o u t s i d e p r i m a r y c o n t a i n m e n t " i s a p p r o p r i a t e because t h e d e v i c e s a r e o p e r a t e d under a d m i n i s t r a t i v e c o n t r o l s and t h e p r o b a b i l i t y o f t h e i r m i s a l i g n m e n t i s l o w . For t h e d e v i c e s i n s i d e primary containment, t h e time p e r i o d s p e c i f i e d " p r i o r t o e n t e r i n g MODE 2 o r 3 f r o m MODE 4, i f p r i m a r y c o n t a i n m e n t was d e - i n e r t e d w h i l e i n MODE 4, i f n o t p e r f o r m e d w i t h i n t h e p r e v i o u s 92 days" i s based on e n g i n e e r i n g judgment and i s considered reasonable i n view o f t h e i n a c c e s s i b i l i t y o f t h e d e v i c e s and o t h e r a d m i n i s t r a t i v e c o n t r o l s e n s u r i n g t h a t d e v i c e m i s a l ignment i s an u n l i k e l y p o s s i b i l i t y .

C o n d i t i o n A i s m o d i f i e d by a Note i n d i c a t i n g t h a t t h i s Condition i s o n l y a p p l i c a b l e t o those p e n e t r a t i o n f l o w paths w i t h two PCIVs. For p e n e t r a t i o n f l o w p a t h s w i t h one P C I V ,

C o n d i t i o n C p r o v i d e s t h e a p p r o p r i a t e Requi r e d A c t i o n s .

Required A c t i o n A.2 i s m o d i f i e d by two Notes. Note 1 a p p l i e s I t o i s o l a t i o n d e v i c e s l o c a t e d i n h i g h r a d i a t i o n a r e a s , and a l l o w s them t o be v e r i f i e d by use o f a d m i n i s t r a t i v e means.

A l l o w i n g v e r i f i c a t i o n by a d m i n i s t r a t i v e means i s c o n s i d e r e d a c c e p t a b l e , s i n c e access t o t h e s e areas i s t y p i c a l l y restricted. Note 2 a p p l i e s t o i s o l a t i o n d e v i c e s t h a t a r e l o c k e d , s e a l e d , o r o t h e r w i s e secured i n p o s i t i o n and a l l o w s t h e s e d e v i c e s t o be v e r i f i e d c l o s e d by use o f a d m i n i s t r a t i v e means. A l l o w i n g v e r i f i c a t i o n by a d m i n i s t r a t i v e means i s considered acceptable, since the f u n c t i o n o f l o c k i n g ,

s e a l i n g , o r s e c u r i n g components i s t o ensure t h a t t h e s e devices are n o t i n a d v e r t e n t l y repositioned. Therefore, t h e p r o b a b i l i t y o f m i s a l i g n m e n t , once t h e y have been v e r i f i e d t o be i n t h e p r o p e r p o s i t i o n , i s l o w .

( c o n t inued PBAPS UNIT 3 B 3.6-20 R e v i s i o n No.

PCIVs B 3 .6 .1 .3 BASES ACTIONS -

B.1 (continued)

With one or more penetration flow paths with two PCIVs inoperable except due t o MSIV leakage n o t within l i m i t ,

e i t h e r the inoperable PCIVs must be restored t o O P E R A B L E s t a t u s or the affected penetration flow p a t h must be i s o l a t e d within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months . The method of i s o l a t i o n must include the use of a t l e a s t one i s o l a t i o n b a r r i e r t h a t cannot be adversely affected by a s i n g l e a c t i v e f a i l u r e .

I s o l a t i o n b a r r i e r s t h a t meet t h i s c r i t e r i o n are a closed a n d de-activated automatic valve, a closed manual valve, a n d a blind flange. The 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months Completion Time i s c o n s i s t e n t with the ACTIONS of LCO 3.6.1.1.

Condition B i s modified by a Note indicating t h i s Condition i s o n l y applicable t o penetration flow paths with two PCIVs.

For penetration flow paths with one P C I V , Condition C provides the appropri a t e Requi red Actions.

C . 1 and C.2 With one or more penetration flow paths with one PCIV i noperabl e , the i noperabl e Val ve must be restored t o OPERABLE status or the affected penetration flow p a t h must be isolated. The method of isolation must include the use of a t l e a s t one isolation barrier t h a t cannot be adversely affected by a single active f a i l u r e . Isolation barriers t h a t meet t h i s c r i t e r i o n are a closed a n d de-activated automatic valve, a closed manual valve, a n d a blind flange.

A check valve may n o t be used t o i s o l a t e the affected penetration. The Completion Time of 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months i s reasonable considering the time required t o i s o l a t e the penetration and the r e l a t i v e importance of supporting primary containment OPERABILITY during MODES 1, 2 , a n d 3. The Completion Time of 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months for penetrations with a closed system i s reasonable considering the re1 ative stabi 1 i ty of the closed system (hence, r e l i a b i l i t y ) t o act as a penetration isolation boundary and the relative importance o f supporting primary containment OPERABILITY during MODES 1, 2 , a n d 3.

The closed system must a1 so meet the requi rements of Reference 6 . The Completion Time o f 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months i s also reasonable considering the instrument a n d the small pipe diameter of penetration (hence, r e l i a b i l i t y ) t o act as a penetration i sol a t i on boundary and the small p i pe di ameter of the affected penetrations.

For affected penetrations t h a t have been i s o l a t e d in accordance with Required Action C.1, the affected penetration flow path(s1 must be v e r i f i e d t o be i s o l a t e d on (continued)

PBAPS UNIT 3 B 3.6-21 Revision No.

PCIVS B 3.6.1.3 BASES ACT I ONS C.1 and C . 2 (continued) a p e r i o d i c basis. This i s necessary t o ensure t h a t primary c o n t a i n m e n t p e n e t r a t i o n s r e q u i r e d t o b e isol a t e d f o l 1 o w i n g an a c c i d e n t , and n o l o n g e r c a p a b l e o f b e i n g a u t o m a t i c a l l y i s o l a t e d , w i l l be i n t h e i s o l a t i o n p o s i t i o n s h o u l d an e v e n t o c c u r . T h i s R e q u i r e d A c t i o n does n o t r e q u i r e any t e s t i n g o r valve manipulation. Rather, i t i n v o l v e s v e r i f i c a t i o n ,

t h r o u g h a s y s t e m walkdown, t h a t t h o s e v a l v e s o u t s i d e c o n t a i n m e n t and c a p a b l e o f p o t e n t i a l l y b e i n g m i s p o s i t i o n e d a r e i n t h e c o r r e c t p o s i t i o n . The C o m p l e t i o n Time o f "once p e r 31 days f o r i s o l a t i o n d e v i c e s o u t s i d e p r i m a r y c o n t a i n m e n t " i s a p p r o p r i a t e because t h e v a l v e s a r e o p e r a t e d u n d e r a d m i n i s t r a t i v e c o n t r o l s and t h e p r o b a b i l i t y o f t h e i r misalignment i s low. For t h e valves i n s i d e p r i m a r y Containment, t h e t i m e p e r i o d s p e c i f i e d " p r i o r t o e n t e r i n g MODE 2 o r 3 f r o m MODE 4, i f p r i m a r y c o n t a i n m e n t was d e - i n e r t e d w h i l e i n MODE 4, i f n o t p e r f o r m e d w i t h i n t h e p r e v i o u s 92 d a y s " i s b a s e d on e n g i n e e r i n g j u d g m e n t and i s considered reasonable i n view o f t h e i n a c c e s s i b i l i t y o f t h e v a l v e s and o t h e r admi n i s t r a t i v e c o n t r o l s e n s u r i n g t h a t v a l v e m i s a l i g n m e n t i s an u n l i k e l y p o s s i b i 1 it y .

C o n d i t i o n C i s m o d i f i e d by a Note i n d i c a t i n g t h a t t h i s Condition i s only applicable t o penetration f l o w paths w i t h o n l y one P C I V . For p e n e t r a t i o n f l o w p a t h s w i t h two P C I V s ,

C o n d i t i o n s A and B p r o v i d e t h e a p p r o p r i a t e R e q u i r e d A c t i o n s .

Required A c t i o n C.2 i s m o d i f i e d by two Notes. Note 1 a p p l i e s I t o v a l v e s and b l i n d f l a n g e s l o c a t e d i n h i g h r a d i a t i o n a r e a s and a l l o w s them t o b e v e r i f i e d b y u s e o f a d m i n i s t r a t i v e means. A l l o w i n g v e r i f i c a t i o n b y a d m i n i s t r a t i v e means i s c o n s i d e r e d a c c e p t a b l e , s i n c e access t o t h e s e areas i s typically restricted. Note 2 a p p l i e s t o i s o l a t i o n d e v i c e s t h a t a r e l o c k e d , s e a l e d , o r o t h e r w i s e s e c u r e d i n p o s i t i o n and a l l o w s t h e s e d e v i c e s t o be v e r i f i e d c l o s e d b y u s e o f a d m i n i s t r a t i v e means. A l l o w i n g v e r i f i c a t i o n b y a d m i n i s t r a t i v e means i s c o n s i d e r e d a c c e p t a b l e , s i n c e t h e f u n c t i o n o f l o c k i n g , s e a l i n g , o r s e c u r i n g components i s t o ensure t h a t these devices are n o t i n a d v e r t e n t l y repositioned.

Therefore, t h e p r o b a b i l i t y o f misalignment o f these valves, once t h e y h a v e been v e r i f i e d t o be i n t h e p r o p e r p o s i t i o n , i s low.

W i t h any M S I V l e a k a g e r a t e n o t w i t h i n l i m i t , t h e a s s u m p t i o n s o f t h e s a f e t y a n a l y s i s a r e n o t met. T h e r e f o r e , t h e l e a k a g e must be r e s t o r e d t o w i t h i n l i m i t w i t h i n 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .

R e s t o r a t i o n can be accomplished b y i s o l a t i n g t h e p e n e t r a t i o n t h a t c a u s e d t h e l i m i t t o b e exceeded b y u s e o f one c l o s e d and d e - a c t i v a t e d a u t o m a t i c v a l v e , c l o s e d manual v a l v e , o r b l i n d f l a n g e . When a p e n e t r a t i o n i s i s o l a t e d , t h e l e a k a g e (continued)

PBAPS UNIT 3 B 3.6-22 R e v i s i o n No.

PCIVs B 3.6.1.3 BASES SURVEILLANCE SR 3.6.1.3.3 (continued)

~~UIRE~E~TS valves are capable o f c l o s i n g i n t h e environment f o l l o w i n g a LOCA. T h e r e f o r e , t h e s e v a l v e s a r e a l l o w e d t o b e open f o r l i m i t e d p e r i o d s o f t i m e . The 3 1 d a y F r e q u e n c y i s c o n s i s t e n t w i t h o t h e r P C I V r e q u i r e m e n t s d i s c u s s e d i n SR 3 . 6 . 1 . 3 . 4 .

SR 3.6.1.3.4 T h i s SR v e r i f i e s t h a t e a c h p r i m a r y c o n t a i n m e n t i s o l a t i o n manual v a l v e and b l i n d f l a n g e t h a t i s l o c a t e d o u t s i d e p r i m a r y c o n t a i n m e n t and i s n o t l o c k e d , s e a l e d , o r o t h e r w i s e s e c u r e d and i s r e q u i r e d t o b e c l o s e d d u r i n g a c c i d e n t c o n d i t i o n s i s c l o s e d . The SR h e l p s t o e n s u r e t h a t p o s t I

a c c i d e n t l e a k a g e o f r a d i o a c t i v e f l u i d s o r gases o u t s i d e t h e p r i m a r y containment boundary i s w i t h i n design l i m i t s .

T h i s SR does n o t r e q u i r e any t e s t i n g o r v a l v e m a n i p u l a t i o n .

R a t h e r , i t i n v o l v e s v e r i f i c a t i o n t h a t t h o s e PCIVs o u t s i d e p r i m a r y c o n t a i n m e n t , and c a p a b l e o f b e i n g m i s p o s i t i o n e d , a r e i n t h e c o r r e c t p o s i t i o n . Since v e r i f i c a t i o n o f v a l v e p o s i t i o n f o r PCIVs o u t s i d e p r i m a r y c o n t a i n m e n t i s r e l a t i v e l y e a s y , t h e 3 1 day F r e q u e n c y was chosen t o p r o v i d e added a s s u r a n c e t h a t t h e PCIVs a r e i n t h e c o r r e c t p o s i t i o n s . T h i s SR does n o t a p p l y t o v a l v e s t h a t a r e l o c k e d , s e a l e d , o r otherwise secured i n t h e closed p o s i t i o n , s i n c e these valves w e r e v e r i f i e d t o b e i n t h e c o r r e c t p o s i t i o n upon l o c k i n g ,

s e a l in g , o r s e c u r i n g .

T h r e e N o t e s h a v e b e e n added t o t h i s SR. The f i r s t N o t e a l l o w s v a l v e s and b l i n d f l a n g e s l o c a t e d i n h i g h r a d i a t i o n areas t o be v e r i f i e d b y use o f a d m i n i s t r a t i v e c o n t r o l s .

A l l o w i n g v e r i f i c a t i o n by a d m i n i s t r a t i v e c o n t r o l s i s considered acceptable since t h e primary containment i s i n e r t e d and a c c e s s t o t h e s e a r e a s i s t y p i c a l l y r e s t r i c t e d d u r i n g MODES 1, 2 , and 3 f o r ALARA r e a s o n s . T h e r e f o r e , t h e p r o b a b i l i t y o f m i s a l i g n m e n t o f t h e s e PCIVs, once t h e y have been v e r i f i e d t o b e i n t h e p r o p e r p o s i t i o n , i s l o w , A second N o t e has been i n c l u d e d t o c l a r i f y t h a t PCIVs t h a t a r e open u n d e r a d m i n i s t r a t i v e c o n t r o l s a r e n o t r e q u i r e d t o m e e t t h e SR d u r i n g t h e t i m e t h a t t h e PCIVs a r e open. A t h i r d N o t e s t a t e s t h a t p e r f o r m a n c e o f t h e SR i s n o t r e q u i r e d f o r t e s t t a p s w i t h a d i a m e t e r r; 1 i n c h . I t i s t h e i n t e n t t h a t t h i s SR m u s t s t i l l b e met, b u t a c t u a l p e r f o r m a n c e i s n o t r e q u i r e d f o r t e s t t a p s w i t h a d i a m e t e r SI 1 i n c h . The N o t e 3 allowance i s c o n s i s t e n t w i t h t h e o r i g i n a l p l a n t l i c e n s i n g basis (continued)

PBAPS UNIT 3 B 3.6-25 R e v i s i o n No.

PCIVs B 3.6.1.3 BASES SURVEILLANCE SR 3.6.1.3.5 REQUIREMENTS (continued) T h i s S R v e r i f i e s t h a t each p r i m a r y c o n t a i n m e n t manual i s o l a t i o n v a l v e and b l i n d f l a n g e t h a t i s l o c a t e d i n s i d e p r i m a r y c o n t a i n m e n t and n o t l o c k e d , s e a l e d , o r o t h e r w i s e s e c u r e d and i s r e q u i r e d t o b e c l o s e d d u r i n g a c c i d e n t c o n d i t i o n s i s c l o s e d . The S R h e l p s t o e n s u r e t h a t p o s t a c c i d e n t l e a k a g e o f r a d i o a c t i v e f l u i d s o r gases o u t s i d e t h e p r i m a r y c o n t a i n m e n t boundary i s w i t h i n d e s i g n l i m i t s . For PCIVs i n s i d e p r i m a r y c o n t a i n m e n t , t h e F r e q u e n c y d e f i n e d as

" p r i o r t o e n t e r i n g MODE 2 o r 3 f r o m MODE 4 i f p r i m a r y c o n t a i n m e n t was d e - i n e r t e d w h i l e i n MODE 4 , i f n o t p e r f o r m e d w i t h i n t h e p r e v i o u s 92 d a y s " i s a p p r o p r i a t e s i n c e t h e s e PCIVs a r e o p e r a t e d u n d e r a d m i n i s t r a t i v e c o n t r o l s and t h e p r o b a b i l i t y o f t h e i r m i s a l i g n m e n t i s l o w . T h i s SR does n o t apply t o valves t h a t are locked, sealed, o r otherwise secured i n t h e c l o s e d p o s i t i o n , s i n c e t h e s e v a l v e s were v e r i f i e d t o b e i n t h e c o r r e c t p o s i t i o n upon l o c k i n g ,

sealing, o r securing.

Two N o t e s h a v e been added t o t h i s SR. The f i r s t N o t e a l l o w s v a l v e s and b l i n d f l a n g e s l o c a t e d i n h i g h r a d i a t i o n a r e a s t o be v e r i f i e d b y use o f a d m i n i s t r a t i v e c o n t r o l s . A l l o w i n g v e r i f i c a t i o n by a d m i n i s t r a t i v e c o n t r o l s i s considered a c c e p t a b l e s i n c e t h e p r i m a r y c o n t a i n m e n t is in e r t e d and access t o t h e s e areas i s t y p i c a l l y r e s t r i c t e d d u r i n g ODES 1, 2 , and 3 f o r ALARA r e a s o n s , T h e r e f o r e , t h e p r o b a b i l i t y o f m i s a l i g n m e n t o f t h e s e PCIVs, once t h e y have been v e r i f i e d t o b e i n t h e i r p r o p e r p o s i t i o n , i s l o w . A second N o t e has been i n c l u d e d t o c l a r i f y t h a t PCIVs t h a t a r e open u n d e r a d m i n i s t r a t i v e c o n t r o l s a r e n o t r e q u i r e d t o meet t h e SR d u r i n g t h e t i m e t h a t t h e PCIVs a r e open.

SR 3.6.1.3.6 The t r a v e r s i n g i n c o r e p r o b e ( T I P ) s h e a r i s o l a t i o n v a l v e s a r e actuated by explosive charges. S u r v e i l l a n c e o f e x p l o s i v e charge c o n t i n u i t y provides assurance t h a t TIP v a l v e s w i l l a c t u a t e when r e q u i r e d . O t h e r a d m i n i s t r a t i v ~ c o n t r o l s , such as t h o s e t h a t l i m i t t h e s h e l f l i f e o f t h e e x p l o s i v e c h a r g e s ,

m u s t be f o l l o w e d , The 3 1 day F r e q u e n c y i s based on o p e r a t i n g e x p e r i e n c e t h a t has d e m o n s t r a t e d t h e r e l i a b i l i t y o f t h e expl o s i ve charge c o n t i n u i t y .

SR 3.6.1.3.7 V e r i f y i n g t h e c o r r e c t a l i g n m e n t f o r e a c h manual v a l v e i n t h e S G I G System r e q u i r e d f l o w p a t h s p r o v i d e s a s s u r a n c e t h a t t h e p r o p e r f l o w p a t h s e x i s t f o r system o p e r a t i o n . T h i s SR does n o t apply t o valves t h a t are locked o r otherwise secured i n (continued)

PBAPS UNIT 3 B 3.6-26 R e v i s i o n No.

PCIVS B 3.6.1.3 BASES SURVEILLAN~~ SR 3.6.1.3.7 (continued)

REQUIRE~E~TS p o s i t i o n , s i n c e t h e s e v a l v e s were v e r i f i e d t o be i n t h e c o r r e c t p o s i t i o n p r i o r t o l o c k i n g o r s e c u r i n g . T h i s SR does n o t r e q u i r e any t e s t i n g o r v a l v e m a n i p u l a t i o n ; r a t h e r , i t in v o l v e s v e r i f i c a t i on t h a t t h o s e v a l v e s c a p a b l e o f b e i ng m i s p o s i t i o n e d a r e i n t h e c o r r e c t p o s i t i o n . T h i s SR does n o t apply t o valves t h a t cannot be i n a d v e r t e n t l y misaligned, s u c h as c h e c k v a l v e s . The 31 day F r e q u e n c y i s b a s e d on e n g i n e e r i n g judgment, i s consi s t e n t w i t h t h e procedural c o n t r o l s g o v e r n i n g v a l v e o p e r a t i o n , and e n s u r e s c o r r e c t valve positions.

SR 3.6.1.3.8 V e r i f y i n g t h e i s o l a t i o n t i m e o f e a c h power o p e r a t e d I automatic P C I V i s w i t h i n l i m i t s i s r e q u i r e d t o demonstrate OPERABILITY. MSIVs may b e e x c l u d e d f r o m t h i s SR s i n c e M S I V f u l l c l o s u r e i s o l a t i o n t i m e i s d e m o n s t r a t e d b y SR 3.6.1.3.9.

The i s o l a t i o n t i m e t e s t e n s u r e s t h a t t h e v a l v e w i l l i s o l a t e i n a t i m e p e r i o d l e s s t h a n o r e q u a l t o t h a t assumed i n t h e s a f e t y a n a l y s e s . The i s o l a t i o n t i m e i s i n a c c o r d a n c e w i t h Reference 2 o r t h e requirements o f t h e I n s e r v i c e T e s t i n g Program w h i c h e v e r i s more c o n s e r v a t i v e . The F r e q u e n c y o f t h i s SR i s i n a c c o r d a n c e w i t h t h e r e q u i r e m e n t s o f t h e I n s e r v i c e T e s t i n g Program.

SR 3.6.1.3.9 V e r i f y i n g t h a t t h e i s o l a t i o n t i m e o f each M S I V i s w i t h i n t h e s p e c i f i e d l i m i t s i s r e q u i r e d t o d e m o n s t r a t e OPERABILITY.

The i s o l a t i o n t i m e t e s t e n s u r e s t h a t t h e M S I V w i l l i s o l a t e i n a t i m e p e r i o d t h a t does n o t e x c e e d t h e t i m e s assumed i n t h e DBA a n a l y s e s . T h i s e n s u r e s t h a t t h e c a l c u l a t e d r a d i o l o g i c a l consequences o f t h e s e e v e n t s r e m a i n w i t h i n 10 CFR 100 l i m i t s , The F r e q u e n c y o f t h i s SR i s i n accordance w i t h t h e requirements o f t h e I n s e r v i c e T e s t i n g Program.

SR 3.6.1.3.10 A u t o m a t i c PCIVs c l o s e on a p r i m a r y c o n t a i n m e n t i s o l a t i o n s i g n a l t o prevent leakage o f r a d i o a c t i v e m a t e r i a l from p r i m a r y c o n t a i n m e n t f o l l o w i n g a DBA. T h i s SR e n s u r e s t h a t each a u t o m a t i c P C I V w i l l a c t u a t e t o i t s i s o l a t i o n p o s i t i o n on a p r i m a r y c o n t a i n m e n t i s o l a t i o n s i g n a l . The LOGIC SYSTEM PBAPS UNIT 3 B 3.6-27 R e v i s i o n No.

PCIVS B 3.6.1.3 BASES SURVE~LLANCE SR 3.6.1.3.16 REQUIRE~ENTS (continued) The i n f l a t a b l e s e a l o f each 6 i n c h and 18 i n c h p r i m a r y c o n t a i n m e n t p u r g e v a l v e and e a c h 18 i n c h p r i m a r y c o n t a i n m e n t e x h a u s t v a l v e m u s t b e r e p l a c e d e v e r y 96 m o n t h s . T h i s w i l l a l l o w t h e o p p o r t u n i t y f o r replacement b e f o r e gross leakage f a i 1u r e o c c u r s .

REFERENCES 1. UFSAR, C h a p t e r 14.

2. UFSAR, T a b l e 7 . 3 . 1 .

3. 10 CFR 50, A p p e n d i x J , O p t i o n B.

4. UFSAR, T a b l e 7.3.1, N o t e 17.

5. UFSAR, T a b l e 5 . 2 . 2 .

6. UFSAR, T a b l e 7 . 3 . 1 , N o t e 14.

PBAPS UNIT 3 B 3.6-30 R e v i s i o n No.

Secondary Containment B 3.6.4.1 BASES (continued)

SURVEI~LANCE SR 3.6.4.1.1 and SR 3.6.4.1.2

~EQU~~~MENTS V e r i f y i n g t h a t secondary c o n t a i n m e n t equipment h a t c h e s and one access door i n each access o p e n i n g a r e c l o s e d ensures t h a t t h e i n f i l t r a t i o n o f o u t s i d e a i r o f such a magnitude a s t o p r e v e n t m a i n t a i n i n g t h e d e s i r e d n e g a t i v e p r e s s u r e does n o t o c c u r . V e r i f y i n g t h a t a l l such openings a r e c l o s e d p r o v i d e s adequate assurance t h a t e x f i l t r a t i o n f r o m t h e secondary c o n t a i n m e n t w i l l n o t o c c u r . I n t h i s application, t h e t e r m " s e a l e d " has no c o n n o t a t i o n o f l e a k t i g h t n e s s .

M a i n t a i n i n g secondary c o n t a i n m e n t OPERABILITY r e q u i r e s v e r i f y i n g one d o o r i n t h e access o p e n i n g i s c l o s e d . An access o p e n i n g c o n t a i n s one i n n e r and one o u t e r d o o r . In some cases, secondary c o n t a i n m e n t access openings a r e shared such t h a t a secondary c o n t a i n m e n t b a r r i e r may have m u l t i p l e i n n e r o r m u l t i p l e o u t e r d o o r s . The i n t e n t i s t o n o t b r e a c h secondary c o n t a i n m e n t a t any t i m e when secondary c o n t a i n m e n t i s r e q u i r e d . T h i s i s a c h i e v e d by m a i n t a i n i n g t h e i n n e r o r outer p o r t i o n o f t h e b a r r i e r closed a t a l l times. However, a l l secondary c o n t a i n m e n t access d o o r s a r e n o r m a l l y k e p t c l o s e d , e x c e p t when t h e access o p e n i n g i s b e i n g used f o r e n t r y and e x i t o r when maintenance i s b e i n g p e r f o r m e d on an access o p e n i n g . The 3 1 day Frequency f o r t h e s e SRs has been shown t o be adequate, based on o p e r a t i n g e x p e r i e n c e , and i s c o n s i d e r e d adequate i n v i e w o f t h e o t h e r i n d i c a t i o n s o f d o o r d hatch status t h a t are available t o the operator.

SR 3.6.4.1.3 and S R 3.6.4.1.4 The SGT System e x h a u s t s t h e secondary c o n t a i n m e n t atmosphere t o t h e e n v i r o n m e n t t h r o u g h a p p r o p r i a t e t r e a t m e n t equipment.

Each SGT subsystem i s d e s i g n e d t o draw down p r e s s u r e i n t h e secondary c o n t a i n m e n t t o 2 0.25 i n c h e s o f vacuum w a t e r gauge i n 2 120 seconds and m a i n t a i n p r e s s u r e i n t h e secondary c o n t a i n m e n t a t ;z 0.25 i n c h e s o f vacuum w a t e r gauge f o r 1 h o u r a t a f l o w r a t e 2 10,500 cfm. To e n s u r e t h a t a l l f i s s i o n p r o d u c t s r e l e a s e d t o t h e secondary c o n t a i n m e n t a r e t r e a t e d ,

SR 3.6.4.1.3 and SR 3.6.4.1.4 v e r i f y t h a t a p r e s s u r e i n t h e secondary c o n t a i n m e n t t h i s i s l e s s t h a n t h e l o w e s t p o s t u l a t e d p r e s s u r e e x t e r n a l t o t h e secondary c o n t a i n m e n t boundary can r a p i d l y be e s t a b l i s h e d and ~ a i n t a i n e d . hen t h e SGT System i s o p e r a t i n g as designed, t h e e s t a b l i s h m e n t and maintenance o f secondary c o n t a i n m e n t p r e s s u r e c a n n o t be accomplished i f t h e secondary c o n t a i n m e n t boundary i s n o t i n t a c t .

E s t a b l i s h m e n t o f t h i s p r e s s u r e i s c o n f i r m e d by SR 3.6.4.1.3 w h i c h demonstrates t h a t t h e secondary c o n t a i n m e n t can be drawn down t o 2: 0.25 i n c h e s o f vacuum w a t e r gauge i n 2 120

( c o n t i nued 1 PBAPS U N I T 3 B 3.6-76 R e v i s i o n No.

Secondary Containment B 3.6.4.1 BASES SURVEILLANCE SR 3.6.4.1.3 and SR 3.6.4.1.4 (continued)

~EQUIRE~ENTS seconds u s i n g one SGT subsystem. S R 3.6.4.1.4 demonstrates t h a t t h e p r e s s u r e i n t h e secondary c o n t a i n m e n t can be m a i n t a i n e d 2 0.25 i n c h e s o f vacuum w a t e r gauge f o r 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months u s i n g one SGT subsystem a t a f l o w r a t e I 10,500 cfm. The 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months t e s t p e r i o d a l l o w s secondary c o n t a i n m e n t t o be i n t h e r m a l e q u i l i b r i u m a t s t e a d y s t a t e c o n d i t i o n s . The p r i m a r y purpose o f t h e s e SRs i s t o e n s u r e secondary c o n t a i n m e n t boundary i n t e g r i t y . The secondary purpose o f t h e s e SRs i s t o e n s u r e t h a t t h e SGT subsystem b e i n g t e s t e d f u n c t i o n s as designed. There i s a S e p a r a t e LCO w i t h S u r v e i l l a n c e Requirements w h i c h s e r v e s t h e p r i m a r y purpose o f e n s u r i n g OPERABLITY o f t h e SGT System. These SRs need n o t be p e r f o r m e d w i t h each SGT subsystem. The SGT subsystem used f o r t h e s e S u r v e i l l a n c e s i s s t a g g e r e d t o ensure t h a t i n a d d i t i o n t o t h e r e q u i r e m e n t s o f LCO 3.6.4.3, e i t h e r SGT subsystem w i l l p e r f o r m t h i s t e s t . The i n o p e r a b i l i t y o f t h e SGT System does n o t n e c e s s a r i l y c o n s t i t u t e a f a i l u r e o f t h e s e S u r v e i l l a n c e s r e l a t i v e t o t h e secondary c o n t a i n m e n t OPERA~ILITY. O p e r a t i n g e x p e r i e n c e has shown t h e secondary c o n t a i n m e n t boundary u s u a l l y passes t h e s e S u r v e i l l a n c e s when p e r f o r m e d a t t h e 24 month Frequency. T h e r e f o r e , t h e Frequency was c o n c l u d e d t o be a c c e p t a b l e f r o m a r e l i a b i l i t y standpoint.

REFERENCES 1. UFSAR, S e c t i o n 14.6.3.

2. UFSAR, S e c t i o n 14.6.4.

PBAPS UNIT 3 B 3.6-77 R e v i s i o n No.

SCIVs B 3.6.4.2 BASES APP L I CABLE e s t a b l i s h e d b y SCIVs i s r e q u i r e d t o e n s u r e t h a t l e a k a g e f r o m SAFETY ANALYSES t h e p r i m a r y c o n t a i n m e n t i s p r o c e s s e d b y t h e S t a n d b y Gas

( c o n t inued 1 T r e a t m e n t (SGT) System b e f o r e b e i n g r e l e a s e d t o t h e environment.

M a i n t a i n i n g SCIVs OPERABLE w i t h i s o l a t i o n t i m e s w i t h i n l i m i t s ensures t h a t f i s s i o n products w i l l remain trapped i n s i d e s e c o n d a r y c o n t a i n m e n t so t h a t t h e y c a n be t r e a t e d b y t h e SGT System p r i o r t o d i s c h a r g e t o t h e e n v i r o n m e n t .

SCIVs s a t i s f y C r i t e r i o n 3 o f t h e NRC P o l i c y S t a t e m e n t .

LCO SCIVs f o r m a p a r t o f t h e s e c o n d a r y c o n t a i n m e n t b o u n d a r y .

The S C I V s a f e t y f u n c t i o n i s r e l a t e d t o c o n t r o l o f o f f s i t e r a d i a t i on r e 1 eases r e s u l t i n g f r o m DBAs.

The power o p e r a t e d a u t o m a t i c i s o l a t i o n v a l v e s a r e c o n s i d e r e d OPERABLE when t h e i r i s o l a t i o n t i m e s a r e w i t h i n l i m i t s and t h e v a l v e s a c t u a t e on an a u t o m a t i c i s o l a t i o n s i g n a l . The v a l v e s c o v e r e d b y t h i s LCO, a l o n g w i t h t h e i r a s s o c i a t e d s t r o k e t i m e s , a r e l i s t e d i n Reference 3.

The n o r m a l l y c l o s e d i s o l a t i o n v a l v e s o r b l i n d f l a n g e s a r e c o n s i d e r e d OPERABLE when manual v a l v e s a r e c l o s e d o r open i n accordance w i t h a p p r o p r i a t e a d m i n i s t r a t i v e c o n t r o l s ,

a u t o m a t i c SCIVs a r e d e - a c t i v a t e d and s e c u r e d i n t h e i r c l o s e d p o s i t i o n , and b l i n d f l a n g e s a r e i n p l a c e . These p a s s i v e i s o l a t i o n v a l v e s o r d e v i c e s a r e l i s t e d i n R e f e r e n c e 3.

APPLICABILITY I n MODES 1, 2, and 3, a DBA c o u l d l e a d t o a f i s s i o n p r o d u c t release t o t h e primary containment t h a t leaks t o t h e s e c o n d a r y c o n t a i n m e n t . T h e r e f o r e , t h e OPERABILITY o f S C I V s i s required.

I n MODES 4 and 5, t h e p r o b a b i l i t y and consequences o f t h e s e e v e n t s a r e r e d u c e d due t o p r e s s u r e and t e m p e r a t u r e l i m i t a t i o n s i n t h e s e MODES. T h e r e f o r e , m a i n t a i n i n g SCIVs OPERABLE i s n o t r e q u i r e d i n MODE 4 o r 5, e x c e p t f o r o t h e r s i t u a t i o n s under which s i g n i f i c a n t r a d i o a c t i v e r e l e a s e s can b e p o s t u l a t e d , s u c h as d u r i n g o p e r a t i o n s w i t h a p o t e n t i a l f o r d r a i n i n g t h e r e a c t o r v e s s e l (OPDRVs), d u r i n g CORE A ~ T E R ~ T I O ~ oSr, d u r i n g movement o f i r r a d i a t e d f u e l assemblies i n t h e secondary containment. Moving i r r a d i a t e d f u e l a s s e m b l i e s i n t h e s e c o n d a r y c o n t a i n ~ e n tmay a l s o o c c u r i n MODES 1, 2, and 3.

(continued)

PBAPS UNIT 3 B 3.6-79 R e v i s i o n No.

SCIVs B 3.6.4.2 BASES ACTIONS A . 1 and A . 2 (continued) containment penetrations required t o be i s o l a t e d following a n accident, b u t no longer capable of being automatically i s o l a t e d , will be in the i s o l a t i o n position should a n event occur. The Completion Time of once per 3 1 days i s appropriate because the i s o l a t i o n devices a r e operated under admi ni s t r a t i ve control s a n d the probabi 1 i t y of thei r misalignment i s low. This Required Action does n o t require any t e s t i n g or device manipulation. Rather, i t involves v e r i f i c a t i o n t h a t the affected penetration remains i s o l a t e d .

Required Action A . 2 i s modified by two Notes. Note 1 applies t o devices located in h i g h radiation areas a n d allows them t o be v e r i f i e d closed by use of administrative I

c o n t r o l s . Allowing v e r i f i c a t i o n by administrative c o n t r o l s i s considered acceptable, since access t o these areas i s t y p i c a l l y r e s t r i c t e d . Note 2 applies t o i s o l a t i o n devices t h a t a r e locked, sealed, or otherwise secured in position a n d a l l o w s these devices t o be v e r i f i e d closed by use o f administrative means. Allowing v e r i f i c a t i o n by administrative means i s considered acceptable, since t h e function of locking, s e a l i n g , or securing components i s t o ensure t h a t these devices are n o t inadvertently s i t i o n e d . Therefore, the probability of misalignment, they have been v e r i f i e d t o be in the proper p o s i t i o n ,

i s low.

With two SCIVs i n one or more penetration flow paths inoperable, the affected penetration flow p a t h must be i s o l a t e d within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months . The method of i s o l a t i o n must include t h e use of a t l e a s t one i s o l a t i o n b a r r i e r t h a t cannot be adversely affected by a s i n g l e a c t i v e f a i l u r e .

Isolation b a r r i e r s t h a t meet t h i s c r i t e r i o n a r e a closed a n d de-activated automatic valve, a closed manual valve, a n d a blind flange. The 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months Completion Time i s reasonable considering the time required t o i s o l a t e the penetration a n d the probability of a D B A , which requires the SCIVs t o c l o s e ,

occurring during t h i s short time, i s very low.

The Condition has been modified by a Note s t a t i n g t h a t Condition B i s o n l y applicable t o penetration flow paths with two i s o l a t i o n valves. This c l a r i f i e s t h a t only Condition A i s entered i f one SCIV i s inoperable in each of two penetrations.

(conti nued 1 PBAPS U N I T 3 B 3.6-81 Revision No.

SCIVS B 3.6.4.2 BASES ACTIONS (continued)

I f any R e q u i r e d A c t i o n and a s s o c i a t e d C o m p l e t i o n Time c a n n o t be m e t , t h e p l a n t m u s t be b r o u g h t t o a MODE i n w h i c h t h e LCO does n o t a p p l y . To a c h i e v e t h i s s t a t u s , t h e p l a n t m u s t be b r o u g h t t o a t l e a s t MODE 3 w i t h i n 12 h o u r s and t o MODE 4 w i t h i n 36 h o u r s , The a l l o w e d C o m p l e t i o n Times a r e r e a s o n a b l e , based on o p e r a t i n g e x p e r i e n c e , t o r e a c h t h e r e q u i r e d p l a n t c o n d i t i o n s f r o m f u l l power c o n d i t i o n s i n an o r d e r l y manner and w i t h o u t c h a l l e n g i n g p l a n t s y s t e m s .

9.1. 0.2. a n d 0.3 I f any R e q u i r e d A c t i o n and a s s o c i a t e d C o m p l e t i o n Time a r e n o t met, t h e p l a n t must be p l a c e d i n a c o n d i t i o n i n which t h e LCO does n o t a p p l y . I f a p p l i c a b l e , CORE ALTERATIONS and t h e movement o f i r r a d i a t e d f u e l a s s e m b l i e s i n t h e s e c o n d a r y c o n t a i n m e n t must b e i m m e d i a t e l y suspended. S u s p e n s i o n o f t h e s e a c t i v i t i e s s h a l l n o t p r e c l u d e c o m p l e t i o n o f movement o f a component t o a s a f e p o s i t i o n . A l s o , i f a p p l i c a b l e ,

a c t i o n s must b e i m m e d i a t e l y i n i t i a t e d t o suspend OPDRVs i n o r d e r t o m i n i m i z e t h e p r o b a b i l i t y o f a v e s s e l d r a i n d o w n and t h e subsequent p o t e n t i a l f o r f i s s i o n p r o d u c t r e l e a s e ,

A c t i o n s m u s t c o n t i n u e u n t i l OPDRVs a r e suspended.

R e q u i r e d A c t i o n D . 1 has been m o d i f i e d by a N o t e s t a t i n g t h a t LCO 3.0.3 i s n o t a p p l i c a b l e . I f m o v i n g i r r a d i a t e d f u e l a s s e m b l i e s w h i l e i n MODE 4 o r 5, LCO 3.0.3 w o u l d n o t s p e c i f y any a c t i o n . I f m o v i n g f u e l w h i l e i n MODE 1, 2 , o r 3 , t h e f u e l movement i s i n d e p e n d e n t o f r e a c t o r o p e r a t i o n s .

T h e r e f o r e , i n e i t h e r c a s e , i n a b i l i t y t o suspend movement o f i r r a d i a t e d f u e l assemblies would n o t be a s u f f i c i e n t reason t o r e q u i r e a r e a c t o r shutdown.

SURVEILLANCE SR 3.6. 4 . 2 . 1 REQUIREMENTS T h i s SR v e r i f i e s t h a t e a c h s e c o n d a r y c o n t a i n m e n t manual i s o l a t i o n v a l v e and b l i n d f l a n g e t h a t i s n o t l o c k e d , s e a l e d ,

o r o t h e r w i s e s e c u r e d and i s r e q u i r e d t o b e c l o s e d d u r i n g a c c i d e n t c o n d i t i o n s i s c l o s e d . The SR h e l p s t o e n s u r e t h a t I

p o s t a c c i d e n t l e a k a g e o f r a d i o a c t i v e f l u i d s or gases o u t s i d e o f t h e secondary containment boundary i s w i t h i n d e s i g n l i m i t s . T h i s SR does n o t r e q u i r e any t e s t i n g o r v a l v e manipulation. Rather, i t involves v e r i f i c a t i o n t h a t those SCIVs i n s e c o n d a r y c o n t a i n m e n t t h a t a r e c a p a b l e o f b e i n g mispositioned are i n the correct position.

PBAPS UNIT 3 B 3.6-82 R e v i s i o n No.

SCIVs B 3.6.4.2 BASES S~RVEILLA~CE SR 3.6 .4,2.3, (continued)

REQ~IREMENTS Since these SCIVs are r e a d i l y accessible t o personnel d u r i n g n o r m a l o p e r a t i o n and v e r i f i c a t i o n o f t h e i r p o s i t i o n i s r e l a t i v e l y e a s y , t h e 3 1 day F r e q u e n c y was c h o s e n t o p r o v i d e added a s s u r a n c e t h a t t h e SCIVs a r e i n t h e c o r r e c t p o s i t i o n s . T h i s S R does n o t a p p l y t o v a l v e s t h a t a r e l o c k e d ,

sealed, or o t h e r w i s e secured i n t h e c l o s e d p o s i t i o n , s i n c e t h e s e were v e r i f i e d t o be i n t h e c o r r e c t p o s i t i o n upon 1 o c k i ng, s e a l ing, o r s e c u r i ng.

Two N o t e s have been added t o t h i s SR. The f i r s t N o t e a p p l i e s t o v a l v e s and b l i n d f l a n g e s l o c a t e d i n h i g h r a d i a t i o n a r e a s and a l l o w s them t o b e v e r i f i e d b y u s e o f admi n i s t r a t i ve c o n t r o l s . A1 1 o w i n g v e r i f i c a t i o n b y a d m i n i s t r a t i v e c o n t r o l s i s considered acceptable, s i n c e access t o t h e s e areas i s t y p i c a l l y r e s t r i c t e d d u r i n g MODES 1, 2, and 3 f o r ALARA r e a s o n s . T h e r e f o r e , t h e p r o b a b i l i t y o f m i s a l i g n m e n t o f t h e s e SCIVs, once t h e y have been v e r i f i e d t o b e i n t h e p r o p e r p o s i t i o n , i s l o w .

A second N o t e has been i n c l u d e d t o c l a r i f y t h a t SCIVs t h a t a r e open u n d e r a d m i n i s t r a t i v e c o n t r o l s a r e n o t r e q u i r e d t o meet t h e SR d u r i n g t h e t i m e t h e SCIVs a r e open.

SR 3.6.4.2.2 V e r i f y i n g t h a t t h e i s o l a t i o n t i m e o f e a c h power o p e r a t e d automatic S C I V i s w i t h i n l i m i t s i s r e q u i r e d t o demonstrate OPERABILITY. The i s o l a t i o n t i m e t e s t e n s u r e s t h a t t h e S C I V I

w i l l i s o l a t e i n a t i m e p e r i o d l e s s t h a n o r equal t o that assumed i n t h e s a f e t y a n a l y s e s . The F r e q u e n c y o f t h i s SR i s i n a c c o r d a n c e w i t h t h e I n s e r v i c e T e s t i n g Program.

SR 3.6.4.2.3 V e r i f y i n g t h a t e a c h a u t o m a t i c S C I V c l o s e s on a s e c o n d a r y containment i s o l a t i o n s i g n a l i s r e q u i r e d t o prevent leakage o f r a d i o a c t i v e m a t e r i a l from secondary containment f o l l o w i n g a DBA or o t h e r a c c i d e n t s . T h i s SR e n s u r e s t h a t e a c h a u t o m a t i c S C I V w i l l a c t u a t e t o t h e i s o l a t i o n p o s i t i o n on a s e c o n d a r y ~ o n t a i n ~ e ni st o l a t i o n s i g n a l . The LOGIC SYSTEM FUNCTIONAL TEST i n LCO 3 . 3 . 6 . 2 , S e c o n d a r y C o n t a i n m e n t I s o l a t i o n I n s t r u m e n t a t i o n , o v e r l a p s t h i s SR t o p r o v i d e c o m p l e t e t e s t i n g of t h e s a f e t y f u n c t i o n . The 24 m o n t h F r e q u e n c y i s based on t h e need t o p e r f o r m t h i s S u r v e i l l a n c e (continuedl PBAPS UNIT 3 B 3.6-83 R e v i s i o n No.

AC Sources-Operating B 3.8.1 RASES SURVEILLANCE SR 3.8.1.9 (continued)

REQ~IRE~~~TS equipment powered by the DG. S R 3.8.1.9.a corresponds t o the ~aximumfrequency excursion, while SR 3.8.1.9.b a n d SR 3.8.1.9.c provide steady s t a t e voltage a n d frequency values t o which the system must recover following l o a d r e j e c t i o n . The 24 m o n t h Frequency takes i n t o consideration p l a n t conditions requi red t o perform the Survei 1 1 ance, a n d i s intended t o be consistent w i t h expected fuel cycle 1 engths.

This SR i s modified by two Notes. Note 1 ensures t h a t the DG i s t e s t e d under l o a d conditions t h a t are as close t o design basis conditions as possible. When synchronized with o f f s i t e power, t e s t i n g should be performed a t a power f a c t o r of 5 0.89. This power f a c t o r i s representative of the actual inductive loading a DG w ould see under design basis accident conditions. Under c e r t a i n condi t i ons, however, Note 1 a 1 1 ows the Surveillance t o be conducted a t a power f a c t o r other t h a n I 0.89. These conditions occur when grid voltage i s high, a n d the additional f i e l d e x c i t a t i o n needed t o get the power f a c t o r t o I0 . 8 9 r e s u l t s in voltages on the emergency busses t h a t are t o o high. Under these conditions, the power f a c t o r should be maintained as close as practicable t o 0.89 while s t i 11 mai ntai ni ng acceptabl e vol tage 1 imi t s on the emergency busses. I n other circumstances, the grid voltage may be such t h a t the DG e x c i t a t i o n l e v e l s needed t o obtain a power f a c t o r of 0.89 may n o t cause unacceptable voltages on the emergency busses, b u t the e x c i t a t i o n l e v e l s are in excess of those recommended f o r the DG. I n such cases, the power f a c t o r shall be maintained as close as practicable t o 0.89 without exceeding the DG e x c i t a t i o n l i m i t s .

To minimize t e s t i n g o f the DGs, Note 2 allows a s i n g l e t e s t

( i n s t e a d of two t e s t s , one f o r each u n i t ) t o s a t i s f y the requirements f o r b o t h u n i t s . This i s allowed since the main purpose of the Surveillance can be met by performing the t e s t on e i t h e r u n i t . I f the DG f a i l s one of these Survei 1 1 ances, the DG shoul d be considered inoperable on b o t h u n i t s , unless the cause of the f a i l u r e can be d i r e c t l y related t o only one u n i t .

(continued)

PBAPS UNIT 3 B 3.8-26 Revision No.

AC Sources-Operating B 3.8.1 BASES SURVEILLANCE SR 3.8.1.10 REQUIRE~ENTS Consistent with Regulatory Guide 1 . 9 (Ref. 31, paragraph C.2.2.8, t h i s Surveillance demonstrates the DG c a p a b i l i t y t o r e j e c t a f u l l l o a d without overspeed tripping or exceeding the predetermined voltage l i m i t s . The DG f u l l l o a d r e j e c t i o n may occur because of a system f a u l t or inadvertent breaker t r i p p i n g . This Surveillance ensures proper engine generator load response under the simulated t e s t conditions. This t e s t simulates the l o s s of the t o t a l connected l o a d t h a t the DG experiences following a f u l l l o a d r e j e c t i o n a n d v e r i f i e s t h a t the DG does n o t t r i p upon l o s s of the l o a d . These acceptance c r i t e r i a provide DG damage protection. While the DG i s n o t expected t o experience t h i s t r a n s i e n t during a n event, a n d continue t o be a v a i l a b l e ,

t h i s response ensures t h a t the DG i s n o t degraded f o r f u t u r e a p p l i c a t i o n , including reconnection t o the bus i f the t r i p ini t i a t o r can be corrected or i sol ated.

The 24 m o n t h Frequency takes i n t o consideration plant conditions requi red t o perform the Survei 1 1 ance, a n d i s intended t o be consistent with expected fuel cycle lengths.

This SR i s modified by two Notes. Note 1 ensures t h a t the DG i s t e s t e d under load conditions t h a t are as close t o design basi s conditions as possi b l e. When synchroni zed with o f f s i t e power, t e s t i n g should be performed a t a power f a c t o r of I0.89. This power f a c t o r i s representative of the actual inductive loading a DG would see under design basis accident conditions. Under c e r t a i n conditions, however, Note 1 allows the Surveillance t o be conducted a t a power f a c t o r other t h a n I0.89. These conditions occur when grid voltage i s high, a n d the additional f i e l d e x c i t a t i o n needed t o get the power f a c t o r t o I0.89 r e s u l t s in voltages on the emergency busses t h a t are t o o high. Under these conditions, the power f a c t o r should be maintained as close as practi cab1 e t o 0.89 whi 1 e s t i 11 mai ntai ni ng acceptabl e voltage l i m i t s on the emergency busses. In other circumstances, the grid voltage may be such t h a t the DG e x c i t a t i o n l e v e l s needed t o obtain a power f a c t o r of 0.89 may n o t cause unacceptable voltages on the emergency busses, (conti nued 1 PBAPS UNIT 3 B 3.8-27 Revision No.

AC Sources-Operating B 3.8.1 BASES S U R V E I LLANCE SR 3.8.1.10 (continued)

REQ~IRE~ENTS b u t the e x c i t a t i o n l e v e l s a r e i n excess of those recommended f o r the DG. I n such c a s e s , the power f a c t o r shall be maintained as close as p r a c t i c a b l e t o 0.89 without exceeding the DG e x c i t a t i o n l i m i t s . To minimize t e s t i n g o f the DGs, Note 2 allows a s i n g l e t e s t ( i n s t e a d of two t e s t s , one f o r each u n i t ) t o s a t i s f y the requirements f o r b o t h u n i t s . This i s allowed since the main purpose of the Surveillance can be met by performing the t e s t on e i t h e r u n i t . If the DG f a i l s one of these Surveillances, the DG should be considered inoperable on b o t h u n i t s , unless the cause of the f a i l u r e can be d i r e c t l y related t o o n l y one u n i t .

SR 3.8.1.11 Consistent with Regulatory Guide 1 . 9 (Ref. 31, paragraph C . 2 . 2 . 4 , t h i s Surveillance demonstrates the as designed operation of the s t a n d b y power sources during l o s s of the o f f s i t e source. This t e s t v e r i f i e s a l l actions encountered from the loss of o f f s i t e power, including shedding of a l l loads a n d energization of the emergency buses a n d respective loads from the DG. I t f u r t h e r demonstrates the c a p a b i l i t y of the DG t o automatically achieve the required voltage a n d frequency within the speci f i ed t i me.

The DG a u t o - s t a r t and energization o f the associated 4 kV emergency b u s time of 10 seconds i s derived from requi rements of the accident analysis f o r responding t o a design basis large break LOCA. The Surveillance should be continued f o r a mini~umof 5 minutes i n order t o demonstrate t h a t a l l s t a r t i n g t r a n s i e n t s have decayed a n d s t a b i l i t y has been achieved.

(continued)

PBAPS UNIT 3 B 3.8-27a Revision No.

AC Sources - 0 p e r a t i ng B 3.8.1 BASES SUR~EILLA~CE SR 3.8. 1.14 RE~UIRE~E~TS

( c o n t inued 1 C o n s i s t e n t w i t h R e g u l a t o r y Guide 1.9 ( R e f . 31, p a r a g r a p h C.2.2.9, t h i s S u r v e i l l a n c e r e q u i r e s d e m o n s t r a t i o n t h a t t h e DGs can s t a r t and r u n c o n t i n u o u s l y a t f u l l l o a d c a p a b i l i t y f o r an i n t e r v a l o f n o t l e s s t h a n 24 h o u r s .

However, l o a d v a l u e s may d e v i a t e f r o m t h e R e g u l a t o r y Guide such t h a t t h e DG o p e r a t e s f o r 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months a t a l o a d a p p r o x i m a t e l y e q u i v a l e n t t o 92% t o 108% o f t h e c o n t i n u o u s d u t y r a t i n g o f t h e DG, and 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months o f w h i c h i s a t a l o a d a p p r o x i m a t e l y e q u i v a l e n t t o 108% t o 115% o f t h e c o n t i n u o u s d u t y r a t i n g o f t h e DG. The DG s t a r t s f o r t h i s S u r v e i l l a n c e can be p e r f o r m e d e i t h e r f r o m standby o r h o t c o n d i t i o n s . The p r o v i s i o n s f o r p r e l u b e and warmup, d i s c u s s e d i n SR 3.8.1.2, and f o r g r a d u a l l o a d i n g , d i s c u s s e d i n SR 3.8.1.3, a r e a p p l i c a b l e t o t h i s SR.

T h i s S u r v e i l l a n c e v e r i f i e s , i n d i r e c t l y , t h a t t h e DGs a r e c a p a b l e o f s y n c h r o n i z i n g and a c c e p t i n g l o a d s e q u i v a l e n t t o p o s t a c c i d e n t l o a d s . The DGs a r e t e s t e d a t a l o a d approximately e q u i v a l e n t t o t h e i r continuous duty r a t i n g ,

even t h o u g h t h e p o s t a c c i d e n t l o a d s exceed t h e c o n t i n u o u s r a t i n g . T h i s i s a c c e p t a b l e because r e g u l a r s u r v e i l l a n x e t e s t i n g a t p o s t a c c i d e n t l o a d s i s i n j u r i o u s t o t h e DG, and i m p r u d e n t because t h e same l e v e l o f assurance i n t h e a b i l i t y o f t h e DG t o p r o v i d e p o s t a c c i d e n t l o a d s can be developed by m o n i t o r i n g e n g i n e parameters d u r i n g s u r v e i l l a n c e t e s t i n g .

The v a l u e s o f t h e t e s t i n g parameters can t h e n be q u a l i t a t i v e l y compared t o e x p e c t e d v a l u e s a t p o s t a c c i d e n t e n g i n e l o a d s . I n making t h i s comparison i t i s n e c e s s a r y t o c o n s i d e r t h e e n g i n e parameters as i n t e r r e l a t e d i n d i c a t o r s o f r e m a i n i n g DG c a p a c i t y , r a t h e r t h a n i n d e p e n d e n t i n d i c a t o r s .

The i m p o r t a n t e n g i n e parameters t o be c o n s i d e r e d i n making t h i s comparison i n c l u d e , f u e l r a c k p o s i t i o n , s c a v e n g i n g a i r p r e s s u r e , e x h a u s t t e m p e r a t u r e and p r e s s u r e , e n g i n e o u t p u t ,

j a c k e t w a t e r t e m p e r a t u r e , and l u b e o i l t e m p e r a t u r e . W i t h t h e DG o p e r a t i n g a t o r near c o n t i n u o u s r a t i n g and t h e observed v a l u e s o f t h e above parameters l e s s t h a n e x p e c t e d post a c c i d e n t values, a q u a l i t a t i v e e x t r a p o l a t i o n which shows t h e DG i s c a p a b l e o f a c c e p t i n g p o s t a c c i d e n t l o a d s can be made w i t h o u t r e q u i r i n g d e t r i m e n t a l t e s t i n g .

(~ontinue~)

PBAPS U N I T 3 B 3.8-31 R e v i s i o n No.

AC Sources-Operating B 3.8.1 BASES SURVEILLA~CE SR 3.8.1.14 (continued)

R E Q U I RENENTS A l o a d b a n d i s provided t o avoid r o u t i n e overloading of the DG. Routine overloading may r e s u l t in more frequent teardown i n s p e c t i o n s in accordance with vendor recommendations in order t o maintain DG O P E R A B I L I T Y .

The 24 m o n t h Frequency takes i n t o consideration p l a n t conditions required t o perform t h e S u r v e i l l a n c e ; a n d i s intended t o be c o n s i s t e n t with expected fuel c y c l e l e n g t h s .

This S u r v e i l l a n c e has been modified by t h r e e Notes. Note 1 s t a t e s t h a t momentary t r a n s i e n t s due t o changing bus loads d o n o t i n v a l i d a t e t h i s t e s t . S i m i l a r l y , momentary power f a c t o r t r a n s i e n t s above t h e l i m i t do n o t i n v a l i d a t e the t e s t . Note 2 ensures t h a t the DG i s t e s t e d under l o a d condit ons t h a t a r e as c l o s e t o design b a s i s c o n d i t i o n s as possib e . When synchronized with o f f s i t e power, t e s t i n g should be performed a t a power f a c t o r of I 0.89. This power f a c t o r i s r e p r e s e n t a t i v e of the actual inductive loading a DG wou d see under design b a s i s accident c o n d i t i o n s . Under c e r t a i n condi t i o n s , however, Note 2 a1 1 ows the Survei 11 ance t o be conducted a t a power f a c t o r o t h e r t h a n 5 0.89. These conditions occur when g r i d voltage i s high, a n d t h e additional f i e l d e x c i t a t i o n needed t o g e t t h e power f a c t o r t o 5 0.89 r e s u l t s i n voltages on the emergency busses t h a t a r e t o o h i g h . Under these c o n d i t i o n s , t h e power f a c t o r should be maintained as c l o s e as p r a c t i c a b l e t o 0.89 while s t i 11 maintaining acceptable voltage 1 imi t s on t h e emergency busses. I n other circumstances, t h e g r i d voltage may be such t h a t t h e DG e x c i t a t i o n l e v e l s needed t o obtain a power f a c t o r of 0.89 may n o t cause unacceptable voltages on t h e emergency busses, b u t t h e e x c i t a t i o n l e v e l s a r e i n excess of those recommended f o r the DG. I n such c a s e s , t h e power f a c t o r s h a l l be maintained as c l o s e as p r a c t i c a b l e t o 0.89 without exceeding t h e DG e x c i t a t i o n l i m i t s . To minimize t e s t i n g of the D G s , Note 3 allows a s i n g l e t e s t ( i n s t e a d of two t e s t s , one f o r each u n i t ) t o s a t i s f y the requirements f o r b o t h u n i t s . This i s allowed s i n c e t h e main purpose of the Surveillance can be met by performing the t e s t on e i t h e r u n i t . If the DG f a i l s one of these S u r v e i l l a n c e s , t h e DG should be considered inoperable on b o t h u n i t s , unless the cause of the f a i l u r e can be d i r e c t l y r e l a t e d t o o n l y one unit.

SR 3.8.1.15 This Surveillance demonstrates t h a t t h e d i e s e l engine can r e s t a r t from a h o t c o n d i t i o n , such as subsequent t o shutdown from normal S u r v e i l l a n c e s , a n d achieve the required voltage a n d frequency within 10 seconds. The minimum voltage a n d frequency s t a t e d in t h e S R a r e those necessary t o ensure t h e DG can accept DBA 1 oadi n g whi 1 e maintaining acceptable voltage a n d frequency l e v e l s . S t a b l e operation a t t h e nominal voltage a n d frequency values i s a 1 so e s s e n t i a l t o e s t a b l i s h i n g DG OPERABILITY, b u t a time c o n s t r a i n t i s n o t imposed. This i s because a typical DG will experience a

( c o n t i nued)

PBAPS UNIT 3 B 3.8-32 Revision No.

AC Sources - Shutdown B 3.8.2 BASES LCO o f f s i t e c i r c u i t . I n a d d i t i o n some equipment t h a t may be (continued) r e q u i r e d by U n i t 3 i s powered f r o m U n i t 2 s o u r c e s ( e . g . ,

Containment Atmospheric D i l u t i o n System, Standby G a s T r e a t m e n t System, Emergency S e r v i c e Water System, and Main C o n t r o l Room Emergency V e n t i l a t i o n System). T h e r e f o r e ,

qua1 i f i e d c i r c u i t s between t h e o f f s i t e t r a n s m i s s i o n n e t w o r k and t h e U n i t 2 o n s i t e Class 1 E AC e l e c t r i c a l power d i s t r i b u t i o n s u b s y s t e m W , and t h e DG(s) ( n o t n e c e s s a r i l y d i f f e r e n t DG(s) f r o m t h o s e b e i n g used t o meet LCO 3.8.2.b r e q u i r e m e n t s ) c a p a b l e o f s u p p l y i n g power t o t h e r e q u i r e d U n i t 2 subsystems o f each o f t h e r e q u i r e d components must a l s o be OPERABLE. T o g e t h e r , O P E R A B I L I T Y o f t h e r e q u i r e d o f f s i t e c i r c u i t ( s 1 and r e q u i r e d D G W ensures t h e a v a i l a b i l i t y o f s u f f i c i e n t AC sources t o o p e r a t e t h e p l a n t i n a s a f e manner and t o m i t i g a t e t h e consequences o f p o s t u l a t e d e v e n t s d u r i n g shutdown ( e . g . , f u e l h a n d l i n g a c c i d e n t s and r e a c t o r vessel d r a i n d o w n ) . A u t o m a t i c i n i t i a t i o n o f t h e r e q u i r e d DG d u r i n g shutdown c o n d i t i o n s i s s p e c i f i e d i n LCO 3.3.5.1, ECCS I n s t r u ~ e n t a t i o n , and LCO 3 . 3 . 8 . 1 , LOP I n s t r u m e n t a t i o n .

The q u a l i f i e d U n i t 3 o f f s i t e c i r c u i t must be c a p a b l e o f m a i n t a i n i n g r a t e d f r e q u e n c y and v o l t a g e w h i l e connected t o t h e r e s p e c t i v e U n i t 3 4 kV emergency b u s ( e s ) , and o f a c c e p t i n g r e q u i r e d l o a d s d u r i n g an a c c i d e n t . Q u a l i f i e d o f f s i t e c i r c u i t s a r e t h o s e t h a t a r e d e s c r i b e d i n t h e UFSAR, T e c h n i c a l S p e c i f i c a t i o n Bases S e c t i o n 3.8.1 and a r e p a r t o f the licensing basis f o r the u n i t . A Unit 3 o f f s i t e c i r c u i t c o n s i s t s o f t h e i n c o m i n g b r e a k e r and d i s c o n n e c t t o t h e s t a r t u p and emergency a u x i l i a r y t r a n s f o r m e r , t h e r e s p e c t i v e c i r c u i t p a t h t o t h e emergency a u x i l i a r y t r a n s f o r m e r and t h e c i r c u i t p a t h t o t h e U n i t 3 4 kV emergency buses r e q u i r e d by LCO 3.8.8, i n c l u d i n g f e e d e r b r e a k e r s t o t h e r e q u i r e d U n i t 3 4 kV emergency buses. A q u a l i f i e d U n i t 2 o f f s i t e c i r c u i t ' s r e q u i r e m e n t s a r e t h e same as t h e U n i t 3 c i r c u i t ' s requirements, except t h a t t h e c i r c u i t path, i n c l u d i n g t h e f e e d e r b r e a k e r s , i s t o t h e U n i t 2 4 kV emergency buses r e q u i r e d t o be OPERABLE by LCO 3.8.8.

The r e q u i r e d DGs must be capable o f s t a r t i n g , a c c e l e r a t i n g t o r a t e d speed and v o l t a g e , and c o n n e c t i n g t o t h e i r r e s p e c t i v e U n i t 3 emergency bus on d e t e c t i o n o f bus u n d e r v o l t a g e . T h i s sequence must be a c c o m p l i s h e d w i t h i n 10 seconds. Each DG must a l s o be c a p a b l e o f a c c e p t i n g r e q u i r e d l o a d s w i t h i n t h e assumed l o a d i n g sequence i n t e r v a l s , and must c o n t i n u e t o o p e r a t e u n t i l o f f s i t e power can be r e s t o r e d t o t h e 4 kV emergency buses. These c a p a b i l i t i e s a r e r e q u i r e d t o be met f r o m a v a r i e t y o f i n i t i a l c o n d i t i o n s such as DG i n standby w i t h e n g i n e h o t and DG i n standby w i t h e n g i n e a t ambient c o n d i t i o n s . A d d i t i o n a l PBAPS U N I T 3 B 3.8-42 RPviqinn Nn

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