ML072120145

NRC Response to 4/16/2007 Submittal of TSTF-493, Revision 2, Clarify Application of Setpoint Methodology for LSSS Functions, Enclosure 5a - CEOG_3.3.01a_B for TSTF-493R2eITSB

ML072120145
Person / Time
Site:	Technical Specifications Task Force
Issue date:	07/25/2007
From:	Kobetz T J NRC/NRR/ADRO/DIRS/ITSB
To:	Technical Specifications Task Force
Schulten C. S., NRR/DIRS, 415-1192
Shared Package
ML072070202	List: ML072050146 ML072070251 ML072070260 ML072070269 ML072070355 ML072070358 ML072120059 ML072120076 ML072120083 ML072120091 ML072120096 ML072120100 ML072120105 ML072120111 ML072120119 ML072120145 ML072120153 ML072120162 ML072120164 ML072120165 ML072120168
References
TAC MD5249, TSTF-493, Rev 2
Download: ML072120145 (44)

Text

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-1 R ev. 3.0, 03/31/04 B 3.3 I NS TRU ME NTA TI ON B 3.3.1 React or Pr ot ect i v e Sy st em (R PS) I nst r um ent at i on - O per at i ng (Anal og)BAS ES B A C K G R O U N D T he R eact or P r ot ect i v e S y st em (R P S) i ni t i at es a r eact or t r i p t o pr ot ect agai nst v i ol at i ng t he c or e sp eci f i ed ac cept abl e f uel des i gn l i m i t s an d br each i ng t he r eact or coo l ant pr ess ur e bound ar y (R C PB) dur i ng ant i ci pat ed oper at i onal occ ur r ence s (AO O s). By t r i ppi ng t he r eact or , t he R P S a ls o a s s is ts th e E n g in e e re d S a f e ty F e a tu re s (E S F) s ys te m s in m i t i gat i ng a cci den t s.T h e p ro te c ti o n a n d m o n i to ri n g s y s te m s h a v e b e e n d e s i g n e d to e n s u re saf e oper at i on of t he r eact or. T hi s i s ac hi ev ed by spe ci f y i ng l i m i t i ng saf et y sy st em set t i ngs (LSS S) i n t er m s of par am et er s di r ect l y m oni t or ed by t he RP S, as we l l as L C O s on ot her r eact or sy st em par am et er s an d equ i pm ent per f or m ance. T he su bset of LS S S t hat di r ect l y pr ot ect aga i nst v i ol at i ng t he Rr eact or C cor e Saf et y Li m i t s an d or t he React or C ool ant Sy st em (R C S) Ppr ess ur e bound ar y Ssaf et y Ll i m i t s du r i ng ant i ci pat ed o p e r a t i o n a l o c c u r r e n c e s (AOOs) a r e r e f e r r e d t o a s Sa f e t y L i m i t L SSS (S L-L S S S).Te c h n i c a l Sp e c i f i c a t i o n s a r e r e q u i r e d b y 1 0 CFR 5 0.3 6 t o c o n t a i n L SSS d e fi n e d b y t h e r e g u l a t i o n a s "...s e t t i n g s for a u t o m a t i c p r o t e c t i ve dev i ces...so c hose n t hat aut om at i c pr ot ect i v e ac t i ons wi l l cor r ect t he ab no r m al s i t ua t i on be f or e a Saf et y Li m i t (SL) i s ex c ee de d." 10 CFR 5 0.3 6 (c)(1)(i i)(A) r e q u i r e s t h a t T S s i n c l u d e L S S S s for va r i a b l e s t h a t h a ve si gni f i cant saf et y f unct i ons. For v ar i abl es o n whi ch a SL has bee n p la c e d , th e L S S S m u s t b e c h o s e n to in iti a te a u to m a tic p ro te c tiv e a c tio n to cor r ect abnor m al si t uat i ons bef or e t he SL i s ex ceed ed. T he Anal y t i cAnal y t i cal Li m i t i s t he l i m i t of t he pr oces s v ar i abl e at whi ch a s a fe ty a c ti o n i s i n i ti a te d , a s e s ta b l i s h e d b y th e s a fe ty a n a l y s i s , t o e n s u re t hat an SLa SL i s no t ex ceed ed. Any aut om at i c pr ot ect i on ac t i on t hat occ ur s on r each i ng t he Anal y t i cAnal y t i cal Li m i t t her ef or e ens ur es t hat t he SL i s no t ex ceed ed. H owev er , i n pr act i ce, t he ac t ual set t i ngs f or a u t o m a t i c p r o t e c t i ve d e vi c e s m u s t b e c h o s e n t o b e m o r e c o n s e r va t i ve t han t he Anal y t i cAnal y t i cal Li m i t t o ac coun t f or i nst r um ent l oop u n c e r t a i n t i e s r e l a t e d t o t h e s e t t i n g a t w h i c h t h e a u t o m a t i c p r o t e c t i ve a c ti o n w o u l d a c tu a l l y o c c u r.T he t r i p se t poi nt i s a p r edet er m i ned s et t i ng f or a pr ot ect i v e dev i ce c hose n t o ens ur e aut om at i c ac t uat i on pr i or t o t he pr oces s v ar i abl e r each i ng t he An a l y t i c L i m i t a n d t h u s e n s u r i n g t h a t t h e SL w o u l d n o t b e e x c e e d e d. As such, t he t r i p set poi nt accou nt s f or unce r t ai nt i es i n set t i ng t he d evi ce (e.g., c a l i b ra ti o n), u n c e rta i n ti e s i n h o w th e d e v i c e m i g h t a c tu a l l y p e rfo rm (e.g., re p e a ta b il ity), c h a n g e s in th e p o in t o f a c tio n o f th e d e v ic e o v e r tim e (e.g., dr i f t dur i ng s ur v ei l l ance i nt er v al s), and an y ot her f act or s whi ch m ay in f lu e n c e its a c tu a l p e rf o rm a n c e (e.g., h a rs h a c c id e n t e n v iro n m e n ts). In R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-2 R ev. 3.0, 03/31/04 t hi s m anner , t he t r i p se t poi nt pl ay s an i m por t ant r ol e i n ens ur i ng t hat SLs ar e not ex ceed ed. As suc h, t he t r i p se t poi nt m eet s t he def i ni t i on of an LSS S (R ef. 1) and c oul d be us ed t o m eet t he r equi r em ent t hat t hey be cont ai ned i n t he T echn i cal S peci f i cat i ons.-------------------------------- R E V IE W E R'S N O T E ------------------------------------

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-3 R ev. 3.0, 03/31/04 T he t er m " Li m i t i ng T r i p Set poi nt (LT SP)" i s ge ner i c t er m i nol ogy f or t he set poi nt v al ue c al cul at ed by m eans of t he pl ant-spec i f i c s et poi nt m e th o d o lo g y d o c u m e n te d in a d o c u m e n t c o n tro ll e d u n d e r 1 0 C F R 5 0.5 9. T he t er m Li m i t i ng T r i p Set poi nt i ndi cat es t hat no add i t i onal m ar gi n has b e e n a d d e d b e tw e e n th e A n a ly tic a l L im it a n d th e c a lc u la te d trip s e ttin g. W h e re m a rg in is a d d e d b e tw e e n th e A n a ly tic a l L im it a n d trip set poi nt LT SP , t he t er m N om i nal T r i p Set poi nt (N T SP) i s pr ef er r ed. T he t r i p se t poi nt (f i el d se t t i ng) m ay be m or e co nser v at i v e t han t he Li m i t i ng or N o m i n a l T ri p S e tp o i n t. W h e re th e [L T S P] i s n o t i n c l u d e d i n T a b l e 3.3.1-1 fo r th e p u rp o s e o f c o m p l i a n c e w i th 1 0 C F R 5 0.3 6 , t h e p l a n t-s p e c i fic te rm f o r th e L im iti n g o r N o m in a l T rip S e tp o in t m u s t b e c ite d in N o te b o f T a b le 3.3.1-1. T he br ack et s i ndi cat e pl ant-spec i f i c t er m s m ay appl y , as r ev i ewed and appr ov ed by t he NR C. T he as-f ound an d as-l ef t t ol er ance s wi l l app l y t o t he a ct ual set poi nt i m pl em ent ed i n t he S ur v ei l l ance p ro c e d u re s to c o n f irm c h a n n e l p e rf o rm a n c e. Li cens ees ar e t o i nser t t he nam e of t he doc um ent (s) con t r ol l ed unde r 10 C FR 50.59 t hat con t ai n t he [LT SP] and t he m et hodol ogy f or cal cul at i ng t he as-l ef t and as-f ound t ol er ance s, f or t he phr ase "[a doc um ent cont r ol l ed u nde r 10 C FR 50.59]" i n t he sp eci f i cat i ons.--------------------------------------------------------------------------------------------------T h e [L i m i ti n g T ri p S e tp o i n t (L T S P)] i s a p re d e te rm i n e d s e tt i n g fo r a pr ot ect i v e dev i ce c hose n t o ens ur e aut om at i c ac t uat i on pr i or t o t he pr oces s v ar i abl e r each i ng t he Anal y t i cal Li m i t and t hus ensu r i ng t hat t he SL woul d not be ex ceed ed. As suc h, t he [LT SP] acc ount s f or unce r t ai nt i es i n se t t i ng t he dev i ce (e.g., cal i br at i on), unc er t ai nt i es i n how t he dev i ce m i ght act ual l y per f or m (e.g., r epeat abi l i t y), cha nges i n t he poi nt of act i on o f t he d evi ce over t i m e (e.g., dr i f t dur i ng su r v ei l l ance i nt er v al s), and an y ot her f act or s whi ch m ay i nf l uenc e i t s ac t ual per f or m ance (e.g., har sh a cc i dent env i r onm ent s). I n t hi s m anner , t he[L T S P] e n s u re s th a t S L s a re n o t e x c e e d e d. A s s u c h , th e [L T S P] m e e ts th e d e fin i ti o n o f a n S L a S L-L S S S (R e f. 1).BAS ES BA C KG R O U N D (cont i nued)T echn i cal Speci f i cat i ons cont ai n v al ues r el at ed t o t he O PE R AB I LI T Y of e q u ip m e n t re q u ire d f o r s a f e o p e ra tio n o f th e f a c il ity. O P E R A B L E is d e f in e d in T e c h n ic a l S p e c ific a tio n s a s "...b e in g c a p a b le o f p e rf o rm in g its s a f e ty fu n c tio n (s)." F o r a u to m a tic p ro te c tiv e d e v ic e s , th e re q u ire d s a f e ty f unct i on i s t o ens ur e t hat a SL i s no t ex ceed ed and t her ef or e t he LSSS as def i ned by 10 C FR 50.36 i s t he sa m e as t he O P E R A B I LI T Y l i m i t f or t hese d e v i c e s. Ho w e v e r , u s e o f t h e t r i p s e t p o i n t[L TS P] t o d e f i n e OP E RA B I L I TY i n T echn i cal Speci f i cat i ons and i t s c or r espo ndi ng des i gnat i on as t he L S S S r e q u i r e d b y 1 0 C F R 5 0.3 6 w o u l d b e a n o ve r l y r e s t r i c t i ve r equi r em ent i f i t wer e appl i ed as an O PE R AB I LI T Y l i m i t f or t he " as -f ound" v a lu e o f a p ro te c tiv e d e v ic e s e ttin g d u rin g a S u rv e il la n c e. T h is w o u ld re s u lt i n T e c h n ic a l S p e c ific a tio n c o m p li a n c e p ro b le m s , a s w e ll a s re p o rts R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-4 R ev. 3.0, 03/31/04 a n d c o rre c tiv e a c tio n s re q u ire d b y th e ru le w h ic h a re n o t n e c e s s a ry to ensu r e sa f et y. For ex am pl e, an aut om at i c pr ot ect i v e dev i ce wi t h a s et t i ng th a t h a s b e e n f o u n d to b e d iff e re n t fr o m th e trip s e tp o in t[L T S P] d u e to som e dr i f t of t he s et t i ng m ay st i l l be O PE R AB LE si nce dr i f t i s t o be ex pect ed. T hi s ex pect ed dr i f t woul d hav e been spec i f i cal l y acc ount ed f or i n t he s et poi nt m et hodol ogy f or cal cul at i ng t he t r i p se t poi nt[LT SP] and t h u s t h e a u t o m a t i c p r o t e c t i v e a c t i o n w o u l d s t i l l h a v e e n s u r e d t h a t t h e SL w o u l d n o t b e e xc e e d e d w i t h t h e " a s -fou n d" s e t t i n g o f t h e p r o t e c t i ve d e v ic e. T h e re f o re , th e d e v ic e w o u ld s til l b e O P E R A B L E s in c e it w o u ld hav e per f or m ed i t s s af et y f unct i on and t he onl y cor r ect i v e ac t i on r equi r ed w o u l d b e t o re s e t t h e d e vi c e t o t h e t ri p s e t p o i n t t o a c c o u n t fo r fu rt h e r d ri ft d u rin g th e n e x t s u rv e il la n c e in te rv a l.U s e o f th e trip s e tp o in t to d e f in e "a s f o u n d" O P E R A B IL IT Y a n d its desi gnat i on as t he LSSS under t he ex pect ed c i r cum st ance s de sc r i bed abov e woul d r esul t i n ac t i ons r equi r ed by bot h t he r ul e and Techni cal S peci f i cat i ons t hat ar e cl ear l y not wa r r ant ed. H ow ever , t her e i s al so s o m e p o i n t b e y o n d w h i c h th e d e v i c e w o u l d h a v e n o t b e e n a b l e to p e rfo rm i t s f unct i on due, f or ex am pl e, t o gr eat er t han ex pect ed dr i f t. T hi s v al ue needs t o be s peci f i ed i n t he T echn i cal Speci f i cat i ons i n or der t o def i ne O PE R AB I LI T Y of t he dev i ces and i s de si gnat ed as t he Al l owabl e Val ue w h i c h , a s s t a t e d a b o v e , i s t h e s a m e a s t h e L SSS.H o w e ve r , t h e r e i s a l s o s o m e p o i n t b e y o n d w h i c h t h e d e vi c e w o u l d h a ve not been a bl e t o per f or m i t s f unct i on due, f or ex am pl e, t o gr eat er t han expect ed d r i f t. T he A l l ow abl e V al ue sp eci f i ed i n T abl e 3.3.1-1 i s t he l east c o n s e r va t i ve va l u e o f t h e a s-fou n d s e t p o i n t t h a t a c h a n n e l c a n h a ve d u rin g te s tin g s u c h th a t a c h a n n e l i s O P E R A B L E if th e trip s e tp o in t is f ound c onse r v at i v e wi t h r espe ct t o t he Al l owabl e Val ue dur i ng t he T he A l l ow abl e V al uab l e spe ci f i ed i n T abl e 3.3.1-1 ser v es as t he L S S S such t hat a ch annel i s O PE R AB LE i f t he t r i p se t poi nt i s f ound no t t o ex ceed t he Al l o w a b l e Va l u e d u r i n g t h e CHANNEL FUNCTI ONAL TEST (CFT). As suc h, t he Al l owabl e Val ue di f f er s f r om t he t r i p se t poi nt by an am ount pr i m ar i l y equal t o t he ex pect ed i nst r um ent l oop unc er t ai nt i es, suc h as dr i f t , dur i ng t he s ur v ei l l ance i nt er v al. I n t hi s m anner , t he ac t ual set t i ng of t h e d e v i c e w i l l s t i l l mee t t h e L SSS d e f i n i t i o n a n d CHANNEL FU N C T I O N AL T ES T (C FT). As suc h, t he Al l owabl e Val ue di f f er s f r om t he [LT SP] by an am ount [gr eat er t han or] equal t o t he ex pect ed i nst r um ent chan nel unce r t ai nt i es, such a s dr i f t , dur i ng t he su r v ei l l ance i nt er v al. I n t hi s m anner , t he ac t ual set t i ng of t he dev i ce wi l l ens ur e t hat an SLa SL i s no t ex ceed ed at any gi v en poi nt of t i m e as l ong as t he dev i ce h as R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-5 R ev. 3.0, 03/31/04 BAS ES BA C KG R O U N D (cont i nued)not dr i f t ed bey ond t hat ex pect ed dur i ng t he s ur v ei l l ance i nt er v al. I f t he a c tu a l s e ttin g o f th e d e v ic e is f o u n d to h a v e e x c e e d e d th e A ll o w a b le Val ue t he dev i ce wou l d be c onsi der ed i noper abl e f r om a T echn i cal S peci f i cat i on p er spect i v e. T hi s r equ i r es cor r ect i v e act i on i ncl udi ng t hose act i ons r equi r ed by 10 CF R 50.36 when a ut om at i c pr ot ect i v e dev i ces do n o t f u n c t i o n a s r e q u i r e d. No t e t h a t , a l t h o u g h t h e c h a n n e l i s " OPERAB L E" under t hese ci r cum st ance s, t he t r i p se t poi nt sho ul dm ust be l ef t adj ust ed t o a val ue w i t hi n t he e st abl i shed t r i p set poi nt cal i br at i on a s-l ef t t ol er ance band, i n ac cor danc e wi t h unc er t ai nt y ass um pt i ons st at ed i n t he r ef er ence d se t poi nt m et hodol ogy (as-l ef t cr i t er i a), and c onf i r m ed t o be o p e ra ti n g w i th i n th e s ta ti s ti c a l a l l o w a n c e s o f th e u n c e rta i n ty te rm s a s s ig n e d. (a s-f o u n d c rite ria). I f t he a ct ual set t i ng o f t he d evi ce i s f oun d t o be conse r v at i v e w i t h r espe ct t o t he Al l owabl e Val ue but i s be y ond t he as-f ound t ol er ance band, t hen t hi s c ondi t i on i ndi cat es t hat t he i nst r um ent i s de gr aded an d i s no t p e rf o rm in g in a c c o rd a n c e w ith th e s e tp o in t m e th o d o lo g y a s s u m p tio n s. Th i s c o n d i t i o n mu s t b e e n t e r e d i n t o t h e p l a n t c o r r e c t i v e a c t i o n p r o g r a m, t h e t ri p s e t p o i n t m u s t b e l e ft a d j u s t e d t o a va l u e w i t h i n t h e a s-l e ft t ol er ance band, and an i m m edi at e det er m i nat i on of oper abi l i t y dec i si on m u s t b e m a d e. If th e a c tu a l s e ttin g o f th e d e v ic e is f o u n d to b e n o n-c o n s e rv a tiv e w ith r espe ct t o t he Al l owabl e Val ue, t he dev i ce c hannel woul d be c onsi der ed i noper abl e f r om a T echn i cal Speci f i cat i on per spec t i v e. T hi s r equi r es cor r ect i v e ac t i on i ncl udi ng t hose act i ons r equi r ed by 10 CF R 50.36 when a u to m a tic p ro te c tiv e d e v ic e s d o n o t fu n c tio n a s re q u ire d. D u ri n g A O O s , w h i c h a re th o s e e v e n ts e x p e c te d to o c c u r o n e o r m o re t i m es d ur i ng t he pl ant l i f e, t he ac cept abl e l i m i t s ar e:*

The de parture from nucle ate boiling ratio (DN BR) sha ll be maintained a bo ve the Sa fe ty L imi t (SL) v a lue to p re ve nt d e pa rt ur e fr om n uc le a te b o i l i n g,*

Fue l center line melting sha ll not occur, a nd*

The Rea ctor Coolant Sy stem (RCS) pressure SL of 2750 psia shall not be excee ded.M ai nt ai ni ng t he par am et er s wi t hi n t he abov e v al ues ensu r es t hat t he of f si t e dos e wi l l be wi t hi n t he 10 CFR 50 (R ef. 2) and 10 C FR 100 (R ef. 3)cr i t er i a du r i ng A O O s.Acci dent s ar e ev ent s t hat ar e anal y z ed ev en t hough t hey ar e not ex pect ed t o oc cur dur i ng t he pl ant l i f e. T he ac cept abl e l i m i t dur i ng a c c id e n ts is th a t th e o f f s ite d o s e s h a ll b e m a in ta in e d w ith in a n a c c e p ta b le R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-6 R ev. 3.0, 03/31/04 f r act i on of 10 CF R 100 (R ef. 3) l i m i t s. D i f f er ent acc i dent cat egor i es a l l ow a d iff e re n t fr a c tio n o f th e s e li m its b a s e d o n p ro b a b il ity o f o c c u rre n c e. M eet i ng t he ac cept abl e dos e l i m i t f or an ac ci dent cat egor y i s c onsi der ed hav i ng ac cept abl e co nseq uenc es f or t hat ev ent. H owev er , t hese v al ues t he ac cept abl e dos e l i m i t f or an ac ci dent cat egor y and t hei r ass oci at ed[LT SP s] ar e not con si der ed t o be LSSS as d ef i ned i n 10 CFR 50.36.T he R P S i s segm ent ed i nt o f our i nt er conn ect ed m odu l es. T hese m odul es a r e:*

Me a su re me nt c ha nn e ls, R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-7 R ev. 3.0, 03/31/04 BAS ES BA C KG R O U N D (cont i nued)*

B ist a ble tr ip u nit s,*

RPS L og ic, and*

Reac tor trip circ uit breake rs (RTCBs)

.T h is L C O a d d re s s e s m e a s u re m e n t c h a n n e ls a n d b is ta b le trip u n its. It a ls o a d d re s s e s th e a u to m a tic b yp a s s re m o v a l fe a tu re f o r th o s e trip s w ith o p e ra tin g b yp a s s e s. T h e R P S L o g ic a n d R T C B s a re a d d re s s e d in L C O 3.3.3 , "R e a c to r P ro te c tiv e S ys te m (R P S) L o g ic a n d T rip In iti a tio n." T he r ol e of eac h of t hese m odul es i n t he RP S, i ncl udi ng t hose ass oci at ed wi t h t he l og i c an d RTC Bs , i s di s c us s ed be l ow.M e a s u re m e n t C h a n n e ls M easu r em ent chan nel s, consi st i ng o f f i el d t r ansm i t t er s or pr ocess s e n s o rs a n d a s s o c ia te d in s tru m e n ta tio n , p ro v id e a m e a s u ra b le e le c tro n ic si gnal bas ed upon t he phy si cal cha r act er i st i cs of t he par am et er bei ng m easu r ed.T he ex cor e nuc l ear i nst r um ent at i on and t he anal og c or e pr ot ect i on cal cul at or s (C PC s) ar e co nsi der ed c om ponent s i n t he m easu r em ent chan nel s. T he wi de r ange nu cl ear i nst r um ent s (N I s) pr ov i de a Power R at e of C hange - H i gh T r i p. T hr ee RP S t r i ps u se a power l ev el desi gnat ed as Q power as a n i nput. Q power i s t he hi gher of N I power a n d p rim a ry c a lo rim e tric p o w e r ( T p o w e r) b a s e d o n R C S h o t le g a n d c o ld le g te m p e ra tu re s. T rip s u s in g Q p o w e r a s a n in p u t in c lu d e th e V a ria b le H i g h P o w e r T ri p (V H P T) - H i g h , T h e rm a l M a rg i n/L o w P re s s u re (T M/L P), and t he A x i al P ow er D i st r i but i on (A P D) - H i gh t r i ps.T h e a n a lo g C P C s p ro v id e th e c o m p le x s ig n a l p ro c e s s in g n e c e s s a ry to c a lc u la te th e T M/L P trip s e tp o in t, A P D trip s e tp o in t, V H P T trip s e tp o in t, and Q power cal cul at i on.Th e e x c o r e NI s (w i d e r a n g e a n d p o w e r r a n g e) a n d t h e a n a l o g CP Cs (T M/LP and AP D cal cul at or s) ar e m ount ed i n t he RP S cabi net , wi t h one chan nel of each i n ea ch of t he f our R P S bay s.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-8 R ev. 3.0, 03/31/04 BAS ES BA C KG R O U N D (cont i nued)F o u r i d e n t i c a l me a s u r e me n t c h a n n e l s , d e s i g n a t e d c h a n n e l s A t h r o u g h D, wi t h el ect r i cal and ph y si cal sep ar at i on ar e pr ov i ded f or eac h par am et er used i n t he di r ect gener at i on of t r i p si gnal s. T hese ar e des i gnat ed chan nel s A t hr ough D. Measur em ent cha nnel s pr ov i de i nput t o one o r mo r e R P S b i s t a b l e s w i t h i n t h e s a me R P S c h a n n e l. I n a d d i t i o n , s o me m e a s u re m e n t c h a n n e ls m a y a ls o b e u s e d a s in p u ts to E n g in e e re d S a f e ty Feat ur es Act uat i on Sy st em (ES FA S) bi st abl es, and m ost pr ov i de i ndi cat i on i n t he c ont r ol r oom. Measur em ent cha nnel s us ed as an i nput t o t he R P S ar e ne v er used f or cont r ol f unct i ons.W hen a c hannel m oni t or i ng a pa r am et er ex ceed s a p r edet er m i ned set poi nt , i ndi cat i ng an u nsaf e co ndi t i on, t he bi st abl e m oni t or i ng t he par am et er i n t hat cha nnel wi l l t r i p. T r i ppi ng t wo or m or e ch annel s of bi st abl es m oni t or i ng t he sa m e pa r am et er de-ene r gi z es M at r i x Log i c, whi ch i n t ur n de-ener gi z es t he I ni t i at i on Logi c. T hi s c ause s al l ei ght R T C Bs t o open, i nt er r upt i ng power t o t he c ont r ol el em ent ass em bl i es (C EA s), al l owi ng t hem t o f al l i nt o t he c or e.T h re e o f th e f o u r m e a s u re m e n t a n d b is ta b le c h a n n e ls a re n e c e s s a ry to m e e t t h e r e d u n d a n c y a n d t e s t a b i l i t y o f G D C 2 1 i n 1 0 C F R 5 0 , A p p e n d i x A (R ef. 2). T he f our t h ch annel pr ov i des addi t i onal f l ex i bi l i t y by al l owi ng one chan nel t o be r em ov ed f r om ser v i ce (t r i p ch annel by pass) f or m ai nt enanc e or t est i ng whi l e st i l l m ai nt ai ni ng a m i ni m um t wo-out-of-t hr ee lo g ic. T h u s , e v e n w ith a c h a n n e l i n o p e ra b le , n o s in g le a d d iti o n a l fa il u re in th e R P S c a n e ith e r c a u s e a n in a d v e rte n t trip o r p re v e n t a re q u ire d trip f r om occ ur r i ng.Si nce no s i ngl e f ai l ur e wi l l ei t her cau se o r pr ev ent a pr ot ect i v e sy st em a c tu a tio n , a n d n o p ro te c tiv e c h a n n e l fe e d s a c o n tro l c h a n n e l, th is ar r angem ent m eet s t he r equi r em ent s of I EE E S t andar d 279-1971 (R e f. 4).M any of t he RP S t r i ps a r e gener at ed by com par i ng a s i ngl e m easu r em ent t o a f i x ed b i st abl e set poi nt.[LT S P]. C er t ai n F unct i ons, how ever , m ake use of m or e t han one m easu r em ent t o pr ov i de a t r i p. T he f ol l owi ng t r i ps use m ul t i pl e m easu r em ent chan nel i npu t s:*

Steam Gene rator L evel - L ow T hi s t r i p us es t he l ower of t he t wo st eam gener at or l ev el s as an i nput t o a c om m on bi st abl e.BAS ES BA C KG R O U N D (cont i nued)*

Steam Gene rator Pre ssure - L ow R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-9 R ev. 3.0, 03/31/04 T hi s t r i p us es t he l ower of t he t wo st eam gener at or pr ess ur es a s an i nput t o a c om m on bi st abl e.*

Va ri ab l e H i gh P o we r T ri p (V HP T) - Hi gh T he VH PT use s Q power as i t s on l y i nput. Q power i s t he hi gher of N I p o w e r a n d T p o w e r. It h a s a trip s e tp o in t th a t tra c k s p o w e r le v e ls downwar d so t hat i t i s al way s wi t hi n a f i x ed i ncr em ent abov e cu r r ent power , sub j ect t o a m i ni m um v al ue.O n power i ncr ease s, t he t r i p se t poi nt [Li m i t i ng T r i p Set poi nt] r em ai ns f i x ed unl ess m anual l y r eset , at whi ch p oi nt i t i ncr ease s t o t he new s e tp o in t, a f ix e d in c re m e n t a b o v e Q p o w e r a t th e tim e o f re s e t, s u b je c t to a m a x im u m v a lu e. T h u s , d u rin g p o w e r e s c a la tio n , th e trip set poi nt m ust be r epeat edl y r eset t o av oi d a r eact or t r i p.*

Therma l Marg in/L ow Pressure (TM/L P) and Steam Ge nera tor Pressure D iffer ence Q p o w e r is o n ly o n e o f s e v e ra l i n p u ts to th e T M/L P trip. O th e r in p u ts i ncl ude i nt er nal AS I and c ol d l eg t em per at ur e bas ed on t he hi gher of tw o c o ld le g re s is ta n c e te m p e ra tu re d e te c to rs. T h e T M/L P trip set poi nt i s a com pl ex f unct i on o f t hese i npu t s and r epr esen t s a mi n i mu m a c c e p t a b l e RC S p r e s s u r e t o b e c o mp a r e d t o a c t u a l RC S p re s s u re in th e T M/L P trip u n it.S te a m g e n e ra to r p re s s u re is a ls o a n in d ire c t in p u t to th e T M/L P trip v i a t he St eam G ener at or Pr ess ur e D i f f er ence. T hi s Func t i on pr ov i des a r eact or t r i p when t he s econ dar y pr ess ur e i n ei t her st eam gener at or ex ceed s t hat of t he ot her gener at or by gr eat er t han a f i x ed am ount. T he t r i p i s i m pl em ent ed by bi asi ng t he T M/LP t r i p se t poi nt upwar d so as t o ens ur e T M/LP t r i p i f an as y m m et r i c s t eam gener at or t r ansi ent i s de t ect ed.*

Ax i al P o we r D i s t ri b u t i o n (A P D) - H i gh Q P o w e r a n d A S I a re in p u ts to th e A P D trip. T h e A P D trip s e tp o in t is a f u n c tio n o f Q p o w e r, b e in g m o re re s tric tiv e a t h ig h e r p o w e r le v e ls. It p ro v id e s a re a c to r trip if a c tu a l A S I e x c e e d s th e A P D trip s e tp o in t.BAS ES BA C KG R O U N D (cont i nued)B is ta b le T rip U n its Bi st abl e t r i p uni t s, m ount ed i n t he RP S cabi net , r ecei v e an an al og i nput f ro m th e m e a s u re m e n t c h a n n e ls , c o m p a re th e a n a lo g in p u t to trip set poi nt s, and pr ovi de co nt act out put t o t he M at r i x Log i c. T hey al so pr ov i de l ocal t r i p i ndi cat i on and r em ot e annun ci at i on.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-10 R ev. 3.0, 03/31/04 T her e ar e f our cha nnel s of bi st abl e t r i p uni t s, des i gnat ed A t hr ough D, f or each R PS Funct i on, one f or eac h m easu r em ent cha nnel. Bi st abl e out put r el ay s de-ene r gi z e w hen a t r i p occu r s.T he co nt act s f r om t hese bi st abl e r el ay s ar e ar r ang ed i nt o si x coi nci den ce m at r i ces , com pr i si ng t he Mat r i x Logi c. T he Mat r i x Logi c wi l l gener at e a r e a c t o r t r i p (t w o-o u t-o f-f o u r l o g i c), i f I f b i s t a b l e s mo n i t o r i n g t h e s a me par am et er i n at l east t wo cha nnel s t r i p,. t he Mat r i x Logi c wi l l gener at e a re a c to r tr i p (tw o-o u t-o f-fo u r l o g i c).Som e of t he RP S m easu r em ent cha nnel s pr ov i de c ont act out put s t o t he R PS , so t he c om par i son of an ana l og i nput t o a t r i p se t poi nt i s no t nece ss ar y. I n t hese cas es, t he bi st abl e t r i p uni t i s r epl aced wi t h an auxi l i ar y t r i p un i t. T he a uxi l i ar y t r i p un i t s pr ovi de co nt act m ul t i pl i cat i on so th e s in g le in p u t c o n ta c t o p e n in g c a n p ro v id e m u lti p le c o n ta c t o u tp u ts to t he c oi nci denc e l ogi c as wel l as t r i p i ndi cat i on and annunc i at i on.T r i ps e m pl oy i ng aux i l i ar y t r i p uni t s i ncl ude t he Los s of Load t r i p and t he A P D - H i g h tri p. T h e L o s s o f L o a d tri p i s a c o n ta c t i n p u t fro m th e E l e c tro H y dr aul i c Cont r ol Sy st em con t r ol oi l pr ess ur e on ea ch o f t he f our hi gh pr essur e st op val v es.T he AP D t r i p, des cr i bed abo v e, i s a c om pl ex f unct i on i n whi ch t he ac t ual t r i p co m par i son i s pe r f or m ed wi t hi n t he CP C. T her ef or e t he AP D - H i gh t r i p u n i t e mp l o y s a c o n t a c t i n p u t f r o m t h e CP C.Al l R PS t r i ps, wi t h t he ex cept i on of t he Los s of Load t r i p, gener at e a pr et r i p al ar m as t he t r i p se t poi nt i s ap pr oach ed.T he t r i p se t poi nt s us ed i n t he bi st abl e t r i p uni t s ar e bas ed on t he a n a ly tic a l l im its s ta te d in R e f e re n c e 5. T h e s e le c tio n o f th e s e trip set poi nt s i s s uch t hat adequa t e pr ot ect i on i s pr ov i ded when al l sen sor and pr oces si ng t i m e del ay s ar e t aken i nt o ac coun t. T o al l ow f or cal i br at i on t ol er ance s, i nst r um ent at i on unc er t ai nt i es, i nst r um ent dr i f t , and s e v e re e n v iro n m e n t e rro rs - f o r th o s e R P S c h a n n e ls th a t m u s t fu n c tio n in h a rs h e n v iro n m e n ts , a s d e f in e d b y 1 0 C F R 5 0.4 9 (R e f. 6) - A ll o w a b le Val ues spec i f i ed i n T abl e 3.3.1-1, i n t he ac com pany i ng LCO , ar e BAS ES BA C KG R O U N D (cont i nued)cons er v at i v el y adj ust ed wi t h r espe ct t o t he anal y t i cal l i m i t s. A det ai l ed descr i pt i on o f t he m et hod ol ogy used t o cal cul at e t he t r i p set poi nt s, i ncl udi ng t hei r ex pl i ci t unc er t ai nt i es, i s pr ov i ded i n t he " Pl ant Pr ot ect i on S ys te m S e le c tio n o f T rip S e tp o in t V a lu e s" (R e f. 7). T h e n o m in a l trip set poi nt ent er ed i nt o t he bi st abl e i s no r m al l y st i l l m or e co nser v at i v e t han t hat spe ci f i ed by t he Al l owabl e Val ue, t o ac coun t f or cha nges i n r andom m e a s u re m e n t e rro rs d e te c ta b le b y a C H A N N E L F U N C T IO N A L T E S T. O ne ex am pl e of suc h a c hange i n m easu r em ent er r or i s dr i f t dur i ng t he R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-11 R ev. 3.0, 03/31/04 i nt er v al bet we en su r v ei l l ance s. A chan nel i s i nop er abl e i f i t s act ual as-f ound s et poi nt i s no t wi t hi ncon ser v at i v e wi t h r espe ct t o i t s r equi r ed Al l owabl e Val ue.Set poi nt s i n ac cor danc e wi t h t he Al l owabl e Val ue wi l l ens ur e t hat SLs of Ch a p t e r 2.0 a r e n o t v i o l a t e d d u r i n g AOOs a n d t h e c o n s e q u e n c e s o f DBAs wi l l be ac cept abl e, pr ov i di ng t he pl ant i s op er at ed f r om wi t hi n t he LCO s at t he ons et of t he AO O or D BA and t he equi pm ent f unct i ons as d esi gned.[LT SP s] i n ac cor danc e wi t h t he Al l owabl e Val ue wi l l ens ur e t hat SLs of Ch a p t e r 2.0 a r e n o t v i o l a t e d d u r i n g AOOs a n d t h e c o n s e q u e n c e s o f DBAs wi l l be ac cept abl e, pr ov i di ng t he pl ant i s op er at ed f r om wi t hi n t he LCO s at t he ons et of t he AO O or D BA and t he equi pm ent f unct i ons as d esi gned.N ot e t hat i n t he ac com pany i ng LCO 3.3.1, t he Al l owabl e Val ues of T abl e 3.3.1-1 ar e t he LSSS.l east con ser v at i v e v al ue of t he as-f ound s e t p o i n t t h a t a c h a n n e l c a n h a v e d u r i n g a p e r i o d i c CHANNEL C A L IB R A T IO N o r C H A N N E L F U N C T IO N A L T E S T , s u c h th a t a c h a n n e l i s oper abl e i f t he as-f ound s et poi nt i s c onse r v at i v e wi t h r espe ct t o t he A ll o w a b le V a lu e. R P S L o g ic T he RP S Logi c, addr ess ed i n LCO 3.3.3, con si st s of bot h Mat r i x and I ni t i at i on Logi c an d em pl oy s a s chem e t hat pr ov i des a r eact or t r i p when bi st abl es i n any t wo out of t he f our cha nnel s s ense t he s am e i nput par am et er t r i p. T hi s i s c al l ed a t wo-out-of-f our t r i p l ogi c. T hi s l ogi c an d t he RT C B conf i gur at i on ar e sh own i n Fi gur e B 3.3.1-1.B is ta b le re la y c o n ta c t o u tp u ts f ro m th e f o u r c h a n n e ls a re c o n f ig u re d in to si x l ogi c m at r i ces. Each l ogi c m at r i x che ck s f or a co i nci dent t r i p i n t he sam e par am et er i n t wo bi st abl e ch annel s. T he m at r i ces ar e des i gnat ed th e A B , A C , A D , B C , B D , a n d C D m a tric e s to re f le c t th e b is ta b le c h a n n e ls bei ng m oni t or ed. Each l ogi c m at r i x con t ai ns f our nor m al l y ener gi z ed m at r i x r el ay s. W hen a c oi nci denc e i s de t ect ed, con si st i ng of a t r i p i n t he s a m e F u n c t i o n i n t h e t w o c h a n n e l s b e i n g m o n i t o r e d b y t h e l o g i c m a t r i x, al l f our m at r i x r el ay s de-ener gi z e.T he m at r i x r el ay con t act s ar e ar r anged i nt o t r i p pat hs, wi t h one o f t he f our m a trix re la ys in e a c h m a trix o p e n in g c o n ta c ts in o n e o f th e f o u r trip p a th s. Each t r i p pat h pr ov i des power t o one o f t he f our nor m al l y ener gi z ed R T C B c o n t r o l r e l a y s (K 1 , K 2 , K 3 , a n d K 4). T h e t r i p p a t h s t h u s e a c h h a ve s i x c o n t a c t s i n s e r i e s , o n e f r o m e a c h ma t r i x , a n d p e r f o r m a l o g i c a l OR f unct i on, openi ng t he RT C Bs i f any one or m or e of t he s i x l ogi c m at r i ces i ndi cat e a c oi nci denc e co ndi t i on.BAS ES BA C KG R O U N D (cont i nued)

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-12 R ev. 3.0, 03/31/04 Each t r i p pat h i s r espo nsi bl e f or openi ng one set of t wo of t he ei ght R T C Bs. T he RT C B cont r ol r el ay s (K-r el ay s), when de-ener gi z ed, i nt er r upt power t o t he br eake r under v ol t age t r i p at t achm ent s an d si m ul t aneous l y appl y power t o t he s hunt t r i p at t achm ent s on eac h of t he tw o b re a k e rs. A c tu a tio n o f e ith e r th e u n d e rv o lta g e o r s h u n t trip at t achm ent i s s uf f i ci ent t o open t he RT C B and i nt er r upt power f r om t he mo t o r g e n e r a t o r (M G) s e t s t o t h e c o n t r o l e l e me n t d r i v e me c h a n i s ms (C E D M s).W h e n a c o in c id e n c e o c c u rs in tw o R P S c h a n n e ls , a ll f o u r m a trix re la ys in t h e a f f e c t e d ma t r i x d e-e n e r g i z e. Th i s i n t u r n d e-e n e r g i z e s a l l f o u r RTC B cont r ol r el ay s, whi ch s i m ul t aneous l y de-ener gi z e t he unde r v ol t age and ener gi z e t he s hunt t r i p at t achm ent s i n al l ei ght R T C Bs, t r i ppi ng t hem open.M at r i x Log i c r ef er s t o t he m at r i x pow er supp l i es, t r i p cha nne l by pass c o n ta c ts , a n d i n te rc o n n e c ti n g m a tri x w i ri n g b e tw e e n b i s ta b l e a n d a u x i l i a ry t r i p uni t s, up t o but not i ncl udi ng t he m at r i x r el ay s. C ont act s i n t he b is ta b le a n d a u x il ia ry trip u n its a re e x c lu d e d f ro m th e M a trix L o g ic d e f in iti o n , s in c e th e y a re a d d re s s e d a s p a rt o f th e m e a s u re m e n t c h a n n e l.T h e In itia tio n L o g ic c o n s is ts o f th e tr ip p a th p o w e r s o u r c e , m a tr ix re la ys a n d th e ir a s s o c ia te d c o n ta c ts , a ll in te rc o n n e c tin g w irin g , a n d s o li d s ta te (aux i l i ar y) r el ay s t hr ough t he K-r el ay con t act s i n t he RT C B cont r ol c ir c u itr y.I t i s p o s s i b l e t o c h a n g e t h e t w o-o u t-o f-fo u r R P S L o g i c t o a t w o-o u t-o f-th re e lo g ic f o r a g iv e n in p u t p a ra m e te r in o n e c h a n n e l a t a tim e b y trip chan nel by pass i ng s el ect por t i ons of t he Mat r i x Logi c. T r i p ch annel by pass i ng a bi st abl e ef f ect i v el y sho r t s t he bi st abl e r el ay con t act s i n t he th re e m a tric e s a s s o c ia te d w ith th a t c h a n n e l. T h u s , th e b is ta b le s w il l f u n c tio n n o rm a ll y, p ro d u c in g n o rm a l trip in d ic a tio n a n d a n n u n c ia tio n , b u t a re a c to r trip w il l n o t o c c u r u n le s s tw o a d d iti o n a l c h a n n e ls in d ic a te a trip cond i t i on. T r i p ch annel by pass i ng c an be s i m ul t aneous l y per f or m ed on any num ber of par am et er s i n an y num ber of chan nel s, pr ovi di ng e ach par am et er i s by passe d i n on l y one chan nel at a t i m e. A n i nt er l ock p re v e n ts s im u lta n e o u s trip c h a n n e l b yp a s s in g o f th e s a m e p a ra m e te r in m or e t han one cha nnel. T r i p ch annel by pass i ng i s no r m al l y em pl oy ed dur i ng m ai nt enanc e or t est i ng.BAS ES BA C KG R O U N D (cont i nued)For t hose pl ant s t hat hav e dem onst r at ed s uf f i ci ent cha nnel t o ch annel in d e p e n d e n c e , tw o-o u t-o f-th re e lo g ic is th e m in im u m th a t is re q u ire d to p ro v id e a d e q u a te p la n t p ro te c tio n , s in c e a f a il u re o f o n e c h a n n e l s til l ensu r es a r eact or t r i p woul d be ge ner at ed by t he t wo r em ai ni ng O PE R AB LE channel

s. T wo-out-of-t hr ee l ogi c al so p r ev ent s i nadv er t ent t r i ps c ause d by any si ngl e ch annel f ai l ur e i n a t r i p co ndi t i on.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-13 R ev. 3.0, 03/31/04 I n addi t i on t o t he t r i p ch annel by pass es, t her e ar e al so o per at i ng by pass es o n se l ect R PS t r i ps. Som e of t hese by pass es a r e enabl ed m anual l y , ot her s au t om at i cal l y , i n al l f our R PS cha nnel s when pl ant cond i t i ons do not war r ant t he s peci f i c t r i p pr ot ect i on. Al l oper at i ng by pass es a r e aut om at i cal l y r em ov ed when e nabl i ng by pass con di t i ons ar e no l onger sat i sf i ed. T r i ps wi t h oper at i ng by pass es i ncl ude Power R at e of C hange - H i gh, R eact or C ool ant Fl ow - Low, St eam G ener at or P re s s u re - L o w , A P D - H i g h , T M/L P , a n d S te a m G e n e ra to r P re s s u re D i f f er ence. [T he Los s of Load t r i p, Power R at e of C hange - H i gh, and A P D - H ig h o p e ra tin g b yp a s s e s a re a u to m a tic a ll y e n a b le d a n d d is a b le d.]R eact or T r i p C i r cui t B r eake r s (R T C B s)T h e re a c to r trip s w itc h g e a r, a d d re s s e d in L C O 3.3.3 a n d s h o w n in F ig u re B 3.3.1-1 , c o n s is ts o f e ig h t R T C B s , w h ic h a re o p e ra te d in f o u r s e ts o f tw o b re a k e rs (f o u r c h a n n e ls). P o w e r in p u t to th e re a c to r trip swi t chge ar com es f r om t wo f ul l cap aci t y MG set s op er at ed i n par al l el s u c h th a t th e lo s s o f e ith e r M G s e t d o e s n o t d e-e n e rg ize th e C E D M s. T her e ar e t wo sep ar at e C ED M power sup pl y bus es, eac h bus power i ng h a lf o f th e C E D M s. P o w e r is s u p p li e d f ro m th e M G s e ts to e a c h b u s v ia tw o re d u n d a n t p a th s (trip le g s). T rip le g s 1 A a n d 1 B s u p p ly p o w e r to C E D M b u s 1. T rip le g s 2 A a n d 2 B s u p p ly p o w e r to C E D M b u s 2. T h is ensu r es t hat a f aul t or t he open i ng of a br eake r i n one t r i p l eg (i.e., f or t est i ng p ur pose s) wi l l not i nt er r upt pow er t o t he C E D M buse s.Eac h o f t he f ou r t r i p l eg s c on s i s t s of t wo RT CBs i n s er i es. The t wo R T C B s wi t hi n a t r i p l eg a r e act uat ed b y sepa r at e i ni t i at i on ci r cui t s.T he ei ght R T C Bs ar e oper at ed as f our set s of t wo br eake r s (f our chan nel s). For ex am pl e, i f a br eake r r ecei v es a n open si gnal i n t r i p l eg A (f o r C E D M b u s 1), a n id e n tic a l b re a k e r in trip le g B (f o r C E D M b u s 2) w il l a ls o re c e iv e a n o p e n s ig n a l. T h is a rra n g e m e n t e n s u re s th a t p o w e r is i nt er r upt ed t o bot h C ED M bus es, t hus pr ev ent i ng t r i p of onl y hal f of t he C EA s (a hal f t r i p). Any one i noper abl e br eake r i n a c hannel wi l l m ake t he ent i r e ch annel i noper abl e.BAS ES BA C KG R O U N D (cont i nued)Each se t of R T C Bs i s op er at ed by ei t her a Manual T r i p pus h but t on or an R P S act uat ed K-r el ay. T her e ar e f our M anu al T r i p pu sh bu t t ons, ar r anged i n t wo set s of t wo, as s hown i n Fi gur e B 3.3.1-1. D epr ess i ng bot h pus h but t ons i n ei t her set wi l l r esul t i n a r eact or t r i p.W hen a Manual T r i p i s i ni t i at ed us i ng t he c ont r ol r oom pus h but t ons, t he R PS t r i p pat hs a nd K-r el ay s ar e by pass ed, and t he RT C B under v ol t age a n d s h u n t t r i p a t t a c h m e n t s a r e a c t u a t e d i n d e p e n d e n t o f t h e RPS.M anual T r i p ci r cui t r y i ncl udes t he pus h but t on and i nt er conn ect i ng wi r i ng to b o th R T C B s n e c e s s a ry to a c tu a te b o th th e u n d e rv o lta g e a n d s h u n t trip R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-14 R ev. 3.0, 03/31/04 at t achm ent s bu t ex cl udes t he K-r el ay con t act s an d t hei r i nt er conn ect i ng wi r i ng t o t he R T C B s, wh i ch ar e con si der ed p ar t of t he I ni t i at i on L ogi c.Funct i onal t est i ng of t he ent i r e R PS , f r om bi st abl e i nput t hr ough t he openi ng of i ndi v i dual set s of R T C Bs, can be per f or m ed ei t her at power or s h u td o w n a n d is n o rm a ll y p e rf o rm e d o n a q u a rte rly b a s is. F S A R , S e c tio n [7.2] (R e f. 8), e x p la in s R P S te s tin g in m o re d e ta il.AP PLI C AB LE Each of t he anal y z ed ac ci dent s an d t r ansi ent s c an be d et ect ed by one SA FE T Y or m or e R PS Funct i ons. T he ac ci dent anal y si s c ont ai ned i n R ef er ence 5 A N A L Y S E S ta k e s c re d it fo r m o s t R P S trip F u n c tio n s. F u n c tio n s n o t s p e c ific a ll y c re d ite d in t he ac ci dent anal y si s ar e par t of t he NR C appr ov ed l i cens i ng bas i s f or t he pl ant. T hese Funct i ons m ay pr ov i de pr ot ect i on f or con di t i ons t hat do not re q u ire d yn a m ic tra n s ie n t a n a ly s is to d e m o n s tra te F u n c tio n p e rf o rm a n c e. O t her Funct i ons, suc h as t he Los s of Load t r i p, ar e pur el y equi pm ent pr ot ect i v e, and t hei r use m i ni m i z es t he pot ent i al f or equi pm ent dam age.T ri p S e tp o i n ts th a t d i re c tl y p ro te c t a g a i n s t vio l a ti n g th e R re a c to r C c o re S a fe ty L i m i ts o r th e R e a c to r C o o l a n t S y s te m (R C S) p P re s s u re b o u n d a ry S a fe ty L i m i ts d u ri n g a n ti c i p a te d o p e ra ti o n a l o c c u rre n c e s (A O O s) a re S a fety L i m i t-L i m i t i n g S a fety S y s t e m S e t t i n g s (S L-L S S S). P e r m i s s i ve and i nt er l ock set poi nt s al l ow by pass of t r i ps whe n t hey ar e not r equi r ed by t he Saf et y Anal y si s. T hese per m i ss i v es a nd i nt er l ock s en sur e t hat th e s ta rti n g c o n d i ti o n s a re c o n s i s te n t w i th th e s a fe ty a n a l y s i s , b e fo re pr ev ent at i v e or m i t i gat i ng ac t i ons occ ur. Becaus e t hese per m i ss i v es o r i nt er l ock s ar e onl y one of m ul t i pl e co nser v at i v e st ar t i ng as sum pt i ons f or t he ac ci dent anal y si s, t hey ar e gener al l y con si der ed as nom i nal v al ues w ith o u t re g a rd to m e a s u re m e n t a c c u ra c y, (i.e. th e v a lu e in d ic a te d is suf f i ci ent l y cl ose t o t he nec ess ar y v al ue t o ens ur e pr oper oper at i on of t he s af et y sy st em s t o t ur n t he AO O). T her ef or e per m i ss i v es a nd i n t e r l o c k s a r e n o t c o n s i d e r e d t o b e SL-L SSS.T h e s p e c i fic s a fe ty a n a l y s e s a p p l i c a b l e to e a c h p ro te c ti v e F u n c ti o n a re i de nt i f i ed be l ow: 1.

Var i abl e H i gh Power T r i p (VH PT) - H i gh T h e V H P T p ro v id e s re a c to r c o re p ro te c tio n a g a in s t p o s iti v e re a c tiv ity ex cur si ons t hat ar e t oo r api d f or a Pr ess ur i z er Pr ess ur e - H i gh or TM/L P t r i p t o p r o t e c t a g a i n s t. Th e f o l l o w i n g e v e n t s r e q u i r e VHPT pr ot ect i on:*

Un c on tr oll e d CE A w ith dr a wa l e ve nt,*

Ex cess load, BAS ES AP PLI C AB LE S AF ET Y AN ALY SE S (cont i nued)*

Exc e ss f e e dw a te r h e a t r e mov a l e ve nt, R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-15 R ev. 3.0, 03/31/04*

CEA ejec tion event, and

• Main steam line bre ak (MSL B) (outside containment)

.T he f i r st t hr ee ev ent s ar e AO O s, and f uel i nt egr i t y i s m ai nt ai ned. T he fo u rth a n d fifth a re a c c i d e n ts , a n d l i m i te d fu e l d a m a g e m a y o c c u r.2.

Power R at e of C hange - H i gh T he Power R at e of C hange - H i gh t r i p i s us ed t o t r i p t he r eact or when e x c o re [lo g a rith m ic] p o w e r in d ic a te s a n e x c e s s iv e ra te o f c h a n g e. T he Power R at e of C hange - H i gh Func t i on m i ni m i z es t r ansi ent s f or ev ent s s uch as a con t i nuous C EA wi t hdr awal or a bor on di l ut i on ev ent f r om l ow power l ev el s. T he t r i p m ay be by pass ed when T H E R M A L P O W E R i s < 1E-4% R T P , wh en p oor coun t i ng st at i st i cs m a y l e a d t o e r r o n e o u s i n d i c a t i o n. I t i s a l s o b y p a s s e d a t > 1 5% RTP, w h e re m o d e ra to r te m p e ra tu re c o e ff i c i e n t a n d fu e l te m p e ra tu re coef f i ci ent m ake hi gh r at e of cha nge of power unl i kel y. W i t h t he R T C B s o p e n , th e P o w e r R a te o f C h a n g e - H ig h trip is n o t re q u ire d to be O PE R AB LE; howev er , t he i ndi cat i on and al ar m Funct i ons of at l east t wo cha nnel s ar e r equi r ed by LC O 3.3.13, "[Logar i t hm i c] Power M oni t or i ng Channel s," t o be OP ER AB LE. LCO 3.3.13 ens ur es t he[lo g a rith m ic] c h a n n e ls a re a v a il a b le to d e te c t a n d a le rt th e o p e ra to r to a b o ro n d il u tio n e v e n t.3.

R eact or C ool ant Fl ow - Low T he React or C ool ant Fl ow - Low t r i p pr ov i des pr ot ect i on dur i ng t he f ol l ow i ng e v ent s:*

L oss of RCS flow,*

L oss of nonemer g ency AC power,*

Re a c tor c oo la nt p ump (R CP) se ize d s ha ft ,*

RCP shear ed shaf t, and*

Ce rt a in M SL B e ve nts.T h e lo s s o f R C S f lo w a n d o f n o n e m e rg e n c y A C p o w e r e v e n ts a re A O O s w h e re f u e l i n te g rity i s m ai nt ai ned. T he RC P sei z ed s haf t , she ar ed s haf t , and MS LBs ar e ac ci dent s wher e f uel d a m a g e m a y re s u lt.BAS ES AP PLI C AB LE S AF ET Y AN ALY SE S (cont i nued)4.

Pr ess ur i z er Pr ess ur e - H i gh R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-16 R ev. 3.0, 03/31/04 T he Pr ess ur i z er Pr ess ur e - H i gh t r i p, i n co nj unct i on wi t h pr ess ur i z er saf et y v al v es a nd m ai n st eam saf et y v al v es (M SS Vs), pr ov i des pr ot ect i on agai nst ov er pr ess ur e co ndi t i ons i n t he RC S dur i ng t he f ol l ow i ng e v ent s:*

L oss of conde nser va cuum with a conc urre nt loss of offsite power

,*

L oss of conde nser va cuum with a conc urre nt loss of one 6.9 kV bu s,*

I solation of turbine at 102% pow er,*

Fe edwa ter Sy stem pipe brea ks betwee n the steam g ener ator a nd chec k valve,*

CEA withdrawa l, and*

L oss of fee dwater flow.5.

C ont ai nm ent Pr ess ur e - H i gh T he Cont ai nm ent Pr ess ur e - H i gh t r i p pr ev ent s ex ceed i ng t he c o n ta in m e n t d e s ig n p re s s u re d u rin g c e rta in lo s s o f c o o la n t a c c id e n ts (L O C A s) o r f e e d w a te r lin e b re a k a c c id e n ts. It e n s u re s a re a c to r trip pr i or t o, or con cur r ent wi t h, a LO C A, t hus ass i st i ng t he ES FA S i n t he ev ent of a LO C A or MS LB. Si nce t hese ar e ac ci dent s, SLs m ay be v i ol at ed. H owev er , t he c onse quenc es o f t he ac ci dent wi l l be acc ept abl e.6.

St eam G ener at or Pr ess ur e - Low T he S t eam G ene r at or P r essur e - Low t r i p pr ovi des p r ot ect i on a gai nst an e x cessi v e r at e of hea t ext r act i on f r om t he st eam gen er at or s, w h ic h w o u ld re s u lt i n a ra p id u n c o n tro ll e d c o o ld o w n o f th e R C S. T h is t r i p i s ne eded t o sh ut down t he r eact or and as si st t he ES FA S i n t he e v e n t o f a n M S L B. S in c e th e s e a re a c c id e n ts , S L s m a y b e v io la te d. H owev er , t he c onse quenc es o f t he ac ci dent wi l l be ac cept abl e.BAS ES AP PLI C AB LE S AF ET Y AN ALY SE S (cont i nued)7.a, 7.b.

St eam G ener at or A and B Lev el - LowT he St eam G ener at or A Lev el - Low and St eam G ener at or B Lev el - Low t r i ps a r e r equi r ed f or t he f ol l ow i ng e v ent s:*

Ste a m Sy ste m pi pin g fa ilu re s,*

F e e dw a te r S y ste m pi pe br e a ks ,

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-17 R ev. 3.0, 03/31/04*

I nadver tent opening of a stea m ge nera tor atmospheric dump valve (ADV),*

L oss of normal fe edwa ter, a nd*

Asy mmetric loss of fe edwa ter.T he St eam G ener at or Lev el - Low t r i p ens ur es t hat l ow D N BR , hi gh l ocal power dens i t y , and t he RC S pr ess ur e SLs ar e m ai nt ai ned dur i ng nor m al oper at i on and AO O s, and, i n co nj unct i on wi t h t he ES FA S, t he c onse quenc es o f t he Feedwat er Sy st em pi pe br eak acc i dent wi l l be ac cept abl e.8.

Ax i al Power D i st r i but i on (AP D) - H i gh T he AP D - H i gh t r i p ens ur es t hat ex ces si v e ax i al peak i ng, suc h as th a t d u e to a x ia l x e n o n o s c il la tio n s , w il l n o t c a u s e f u e l d a m a g e. It ensu r es t hat nei t her a DN BR l ess t han t he SL nor a peak l i near heat r at e t hat cor r espo nds t o t he t em per at ur e f or f uel cen t er l i ne m el t i ng wi l l occ ur. T hi s t r i p i s t he pr i m ar y pr ot ect i on agai nst f uel cen t er l i ne m el t i ng.9.

T h e rm a l M a rg in a.

Th e r m a l Ma r g i n/L o w Pr e s s u r e (TM/L P)Th e TM/L P t r i p p r e v e n t s e x c e e d i n g t h e DN B R S L d u r i n g A OOs and ai ds t he ES FA S dur i ng c er t ai n ac ci dent s. T he f ol l owi ng ev ent s r equi r e T M/LP pr ot ect i on:

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-18 R ev. 3.0, 03/31/04 BAS ES AP PLI C AB LE S AF ET Y AN ALY SE S (cont i nued)*

Ex cess load (inadver tent opening of a stea m ge nera tor ADV),*

RCS depre ssurization (inadvertent saf ety or powe r oper ated relief valves (PORVs) ope ning),*

Steam g ener ator tube r upture, a nd*

L OC A a c c ide nt.T h e f irs t tw o e v e n ts a re A O O s , a n d f u e l i n te g rity i s m a in ta in e d. T he t hi r d and f our t h ar e ac ci dent s, and l i m i t ed f uel dam age m ay occ ur al t hough o nl y t he LO C A i s ex pect ed t o r esul t i n f uel dam age. T he t r i p i s i ni t i at ed whene v er t he RC S pr ess ur e si gnal m in var d ro p s b e l o w a m i n i m u m v a l u e (P) o r a c o m p u te d v a l u e (P)a s d e s c rib e d b e lo w , w h ic h e v e r is h ig h e r. T h e c o m p u te d v a lu e is a F u n c tio n Q p o w e r, A S I, a s d e te rm in e d f ro m th e a x ia ll y s p li t ex cor e det ect or s, r eact or i nl et (col d l eg) t em per at ur e, and t he num ber of R C Ps oper at i ng.T he m i ni m um v al ue of r eact or coo l ant f l ow r at e, t he m ax i m um Q T , and t he m ax i m um C EA dev i at i on per m i t t ed f or con t i nuous o p e ra tio n a re a s s u m e d in th e g e n e ra tio n o f th is trip F u n c tio n. In addi t i on, C EA gr oup s equenc i ng i n ac cor danc e wi t h LCO 3.1.6,"R e g u la tin g C o n tro l E le m e n t A s s e m b ly (C E A) In s e rtio n L im its ," i s as sum ed. Fi nal l y , t he m ax i m um i nser t i on of C EA bank s t hat can occ ur dur i ng any AO O pr i or t o a VH PT i s as sum ed.b.

S t eam G ene r at or P r essur e D i f f er ence T he St eam G ener at or Pr ess ur e D i f f er ence pr ov i des pr ot ect i on f or t hose AO O s as soc i at ed wi t h se cond ar y sy st em m al f unct i ons t hat r esul t i n as y m m et r i c pr i m ar y coo l ant t em per at ur es. T he m ost l i m i t i ng ev ent i s c l osur e of a si ngl e m ai n st eam i sol at i on v al v e. St eam G ener at or Pr ess ur e D i f f er ence i s pr ov i ded by c o m p a rin g th e s e c o n d a ry p re s s u re in b o th s te a m g e n e ra to rs in th e T M/L P c a lc u la to r. If th e p re s s u re in e ith e r e x c e e d s th a t in th e o th e r b y th e trip s e tp o in t, a T M/L P trip w il l re s u lt.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-19 R ev. 3.0, 03/31/04 BAS ES AP PLI C AB LE S AF ET Y AN ALY SE S (cont i nued)10.

Loss of Load T h e L o s s o f L o a d (tu rb in e s to p v a lv e (T S V) c o n tro l o il p re s s u re) trip i s an t i ci pat or y f or t he l oss of heat r em ov al cap abi l i t i es o f t he s e c o n d a ry s ys te m f o ll o w in g a tu rb in e trip. T h e L o s s o f L o a d trip p re v e n ts li f tin g th e p re s s u rize r s a f e ty v a lv e s , P O R V s , a n d M S S V s in t he ev ent of a t ur bi ne gene r at or t r i p. T hus, t he t r i p m i ni m i z es t he p re s s u re a n d te m p e ra tu re tra n s ie n ts o n th e re a c to r b y i n iti a tin g a trip wel l bef or e r each i ng t he Pr ess ur i z er Pr ess ur e - H i gh t r i p and pr ess ur i z er saf et y v al v e se t poi nt s. T he f our R PS Los s of Load r eact or t r i p ch annel s r ecei v e t hei r i nput f r om sen sor s m ount ed on t he h i g h p re s s u re T S V a c tu a to rs. S i n c e th e re a re fo u r h i g h p re s s u re T S V s, one act uat or per v al v e an d on e sen sor per act uat or , each sens or sen ds i t s s i gnal t o a di f f er ent R PS cha nnel. W hen t he t ur bi ne t r i ps, con t r ol oi l i s du m ped f r om t he hi gh pr ess ur e T SV s. W hen t he c o n tro l o il p re s s u re d ro p s to th e a p p ro p ria te s e tp o in t, a re a c to r trip si gnal i s ge ner at ed.I nt er l ock s/By pass es T h e b yp a s s e s a n d th e ir A ll o w a b le V a lu e s a re a d d re s s e d in f o o tn o te s to T a b le 3.3.1-1. T h e y a re n o t o th e rw is e a d d re s s e d a s s p e c ific T a b le ent r i es.T h e a u to m a tic b yp a s s re m o v a l fe a tu re s m u s t fu n c tio n a s a b a c k u p to m a n u a l a c ti o n s fo r a l l s a fe ty re l a te d tri p s to e n s u re th e tri p F u n c ti o n s a re not oper at i onal l y by pass ed when t he s af et y anal y si s as sum es t he F u n c tio n s a re n o t b yp a s s e d. T h e R P S o p e ra tin g b yp a s s e s a re: Zer o power m ode by pass (ZP M B) r em ov al on t he T M/LP, St eam G ener at or Pr ess ur e D i f f er ence , and r eact or coo l ant l ow f l ow t r i ps whe n T H ER M AL P O W ER i s < 1E-4% R T P. T hi s by pass i s m anual l y enabl ed bel ow t he s peci f i ed s et poi nt t o per m i t l ow power t est i ng. T he wi de r ange N I Lev el 1 bi st abl e i n t he wi de r ange dr awer per m i t s m anual by pass i ng b e lo w th e s e tp o in t a n d re m o v e s th e b yp a s s a b o v e th e s e tp o in t.Power r at e of cha nge by pass r em ov al. T he Power R at e of C hange - H i gh t r i p i s au t om at i cal l y by pass ed at < 1E-4% R T P, as s ense d by t he wi de r ange NI Lev el 2 bi st abl e, and at > 12% R T P by t he power r ange N I L e v e l 1 b is ta b le , m o u n te d in th e ir re s p e c tiv e N I d ra w e rs. A u to m a tic b y p a s s re m o v a l i s a l s o e ff e c te d b y th e s e b i s ta b l e s w h e n c o n d i ti o n s a re no l onger sat i sf i ed.BAS ES AP PLI C AB LE S AF ET Y AN ALY SE S (cont i nued)

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-20 R ev. 3.0, 03/31/04 Loss of Load a nd AP D - H i gh by pass r em ov al. T he Los s of Load a nd AP D - H i gh t r i ps a r e aut om at i cal l y by pass ed when a t < 15% R T P as s e n s e d b y th e p o w e r ra n g e N I L e v e l 1 b is ta b le. T h e b yp a s s is aut om at i cal l y r em ov ed by t hi s bi st abl e abov e t he s et poi nt. T hi s s am e bi st abl e i s us ed t o by pass t he Power R at e of C hange - H i gh t r i p.St eam G ener at or Pr ess ur e - Low by pass r em ov al. T he St eam G ener at or Pr ess ur e - Low t r i p i s m anual l y enabl ed bel ow t he pr et r i p se t poi nt. T he per m i ss i v e i s r em ov ed, and t he by pass aut om at i cal l y r em ov ed, when t he S t eam G ene r at or P r essur e - Low pr et r i p cl ear s.T h e R P S i n s tru m e n ta ti o n s a ti s fie s C ri te ri o n 3 o f 1 0 C F R 5 0.3 6 (c)(2)(i i).LC O T he LCO r equi r es a l l i nst r um ent at i on per f or m i ng an RP S F unct i on t o be O PE R AB LE. Fai l ur e of any r equi r ed por t i on of t he i nst r um ent cha nnel r ender s t he af f ect ed c hannel (s) i noper abl e and r educ es t he r el i abi l i t y of t he af f ect ed Func t i ons. T he s peci f i c c r i t er i a f or det er m i ni ng c hannel O P E R A B IL IT Y d i ff e r s l i g h tl y b e tw e e n F u n c ti o n s. T h e s e c ri te ri a a re di s c us s ed on a F un c t i on by Fu nc t i on ba s i s be l ow.A ct i ons a l l ow m ai nt ena nce (t r i p cha nne l) by pass o f i ndi v i dua l chan nel s, but t he by pass act i v at es i nt er l ock s t hat pr ev ent oper at i on wi t h a s econ d c h a n n e l i n th e s a m e F u n c ti o n b y p a s s e d. P l a n ts a re re s tri c te d to 4 8 h o u rs in a trip c h a n n e l b yp a s s c o n d iti o n b e f o re e ith e r re s to rin g th e F u n c tio n to f o u r c h a n n e l o p e ra tio n (tw o-o u t-o f-f o u r lo g ic) o r p la c in g th e c h a n n e l i n trip (one-out-of-t hr ee l ogi c). At pl ant s wher e adequ at e ch annel t o ch annel i ndepen denc e has been d em onst r at ed, spe ci f i c ex cept i ons m ay be a p p ro v e d b y th e N R C s ta f f to p e rm it o n e o f th e tw o-o u t-o f-f o u r c h a n n e ls t o be by pass ed f or an ex t ended p er i od of t i m e.O nl y t he Al l owabl e Val ues ar e sp eci f i ed f or eac h R PS t r i p Funct i on i n t he LC O. T he [LT SP] and t he m et hodol ogi es f or cal cul at i on of t he as-l ef t and as-f ound t ol er ance s ar e des cr i bed i n [a doc um ent con t r ol l ed unde r 10 C FR 50.59]. T he [LT SP s] ar e se l ect ed t o ens ur e t hat t he s et poi nt m easu r ed by C H AN N EL FU N C T I O N AL T ES T S does not ex ceed t he A ll o w a b le V a lu e if th e b is ta b le is p e rf o rm in g a s re q u ire d. T h e A ll o w a b le V al ue sp eci f i ed i n T abl e 3.3.1-1 i s t he l east conse r v at i v e val ue o f t he a s-f o u n d s e tp o in t th a t th e c h a n n e l c a n h a v e w h e n te s te d , s u c h th a t a c h a n n e l i s O P E R A B L E if th e a s-f o u n d s e tp o in t is c o n s e rv a tiv e w ith r e s p e c t t o t h e Al l o w a b l e Va l u e d u r i n g t h e CHANNEL FUNCTI ONAL TEST (C FT). Each Al l owabl e Val ue s peci f i ed i s m or e co nser v at i v e t han i nst r um ent unce r t ai nt i es ap pr opr i at e t o t he t r i p F unct i on. T hese u n c e rta in tie s a re d e f in e d in th e "P la n t P ro te c tio n S ys te m S e le c tio n o f T rip Set poi nt Val ues" (R ef. 7). As suc h, t he Al l owabl e Val ue di f f er s f r om t he[LT SP] by an am ount [gr eat er t han or] equal t o t he ex pect ed i nst r um ent c h a n n e l u n c e rta in tie s , s u c h a s d rif t, d u rin g th e s u rv e il la n c e in te rv a l. In t hi s m anner , t he ac t ual set t i ng of t he dev i ce wi l l ens ur e t hat a SL i s no t ex ceed ed at any gi v en poi nt of t i m e as l ong as t he dev i ce h as n ot dr i f t ed b e yo n d th a t e x p e c te d d u rin g th e s u rv e il la n c e in te rv a l.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-21 R ev. 3.0, 03/31/04 N ot e t hat , al t hou gh t he ch ann el i s O P E R A B LE und er t hese ci r cum st ance s, t he t r i p se t poi nt m ust be l ef t adj ust ed t o a v al ue wi t hi n t he a s-le f t to le ra n c e , in a c c o rd a n c e w ith u n c e rta in ty a s s u m p tio n s s ta te d in t he r ef er ence d se t poi nt m et hodol ogy (as-l ef t cr i t er i a), and c onf i r m ed t o be o p e ra ti n g w i th i n th e s ta ti s ti c a l a l l o w a n c e s o f th e u n c e rta i n ty te rm s a s s ig n e d (a s-f o u n d c rite ria). If th e a c tu a l s e ttin g o f th e d e v ic e is f o u n d to be co nser v at i v e w i t h r espe ct t o t he A l l ow abl e V al ue b ut i s bey ond t he a s-f o u n d to le ra n c e b a n d , th e n th is c o n d iti o n in d ic a te s th a t th e in s tru m e n t is degr aded an d i s no t per f or m i ng i n ac cor danc e wi t h t he s et poi nt m et hodol ogy ass um pt i ons. T hi s c ondi t i on m ust be ent er ed i nt o t he pl ant cor r ect i v e ac t i on pr ogr am , t he t r i p se t poi nt m ust be l ef t adj ust ed t o a v al ue wi t hi n t he as-l ef t t ol er ance band, and an i m m edi at e det er m i nat i on o f o p e ra b il ity d e c is io n m u s t b e m a d e. If th e a c tu a l s e ttin g o f th e d e v ic e is f ound t o be no n-cons er v at i v e wi t h r espe ct t o t he Al l owabl e Val ue, t he c h a n n e l d e vi c e w o u l d b e c o n s i d e r e d i n o p e r a b l e. T h i s r e q u i r e s c o r r e c t i ve a c tio n in c lu d in g th o s e a c tio n s re q u ire d b y 1 0 C F R 5 0.3 6 w h e n a u to m a tic pr ot ect i v e dev i ces do not f unct i on as r equi r ed.O nl y t he Al l owabl e Val ues ar e sp eci f i ed f or eac h R PS t r i p Funct i on i n t he LC O. N om i nal t r i p se t poi nt s ar e sp eci f i ed i n t he pl ant spe ci f i c s et poi nt c a lc u la tio n s.[L im iti n g T rip S e tp o in ts a n d th e m e th o d o lo g ie s to c a lc u la te t he as-l ef t and as-f ound t ol er ance s ar e sp eci f i ed i n [a doc um ent c o n tro ll e d u n d e r 1 0 C F R 5 0.5 9]. T h e n o m in a l s e tp o in ts a re s e le c te d to ensu r e t he s et poi nt s m easu r ed by C H AN N EL FU N C T I O N AL T ES T S do not ex ceed t he ar e co nser v at i v e wi t h r espe ct t o t he Al l owabl e Val ue i f t he bi st abl e i s per f or m i ng a s r equ i r ed. O per at i on w i t h a t r i p set poi nt l ess cons er v at i v e t han t he nom i nal t r i p se t poi nt , Li m i t i ng T r i p Set poi nt but wi t hi ncon ser v at i v e wi t h r espe ct t o i t s Al l owabl e Val ue, i s ac cept abl e, pr ov i ded t hat oper at i on and t est i ng ar e co nsi st ent wi t h t he as sum pt i ons of th e p la n t s p e c ific s e tp o in t c a lc u la tio n s. E a c h A ll o w a b le V a lu e s p e c ifie d is m o re c o n s e rv a tiv e th a n th e a n a ly tic a l l im it a s s u m e d in th e s a f e ty a n a ly s is in o rd e r to a c c o u n t fo r in s tru m e n t u n c e rta in tie s a p p ro p ria te to th e trip Funct i on. T hese unc er t ai nt i es a r e def i ned i n t he " Pl ant Pr ot ect i on S y s te m S e l e c ti o n o f T ri p S e tp o i n t V a l u e s" (R e f. 7).

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-22 R ev. 3.0, 03/31/04 BAS ES LC O (cont i nued)T h e f o ll o w in g B a s e s f o r e a c h trip F u n c tio n id e n tify th e a b o v e R P S trip Funct i on c r i t er i a i t em s t hat ar e appl i cabl e t o es t abl i sh t he t r i p Funct i on O P E R A B I L I T Y.1.

Var i abl e H i gh Power T r i p (VH PT) - H i gh T h is L C O re q u ire s a ll f o u r c h a n n e ls o f th e V H P T to b e O P E R A B L E in M O D ES 1 and 2.T he Al l owabl e Val ue i s hi gh enou gh t o pr ov i de an o per at i ng env el ope t hat pr ev ent s un nece ss ar y Li near Power Lev el - H i gh r eact or VH PT - H i gh t r i ps d ur i ng nor m al pl ant oper at i ons. T he A ll o w a b le V a lu e is lo w e n o u g h f o r th e s ys te m to m a in ta in a m a rg in to unac cept abl e f uel cl addi ng dam age s houl d a CE A ej ect i on ac ci dent o c c u r.T he VH PT set poi nt i s op er at or adj ust abl e and c an be s et at a f i x ed i ncr em ent abov e t he i ndi cat ed T H ER M AL P O W ER l ev el. O per at or a c t i o n i s r e q u i r e d t o i n c r e a s e t h e t r i p s e t p o i n t a s THERMAL POW ER i s i ncr ease d. T he t r i p se t poi nt i s au t om at i cal l y dec r ease d as T H E R M A L P O W E R decr ease s. T he t r i p set poi nt[LT S P] has a m a x im u m a n d a m in im u m s e tp o in t. A d d in g to th is m a x im u m v a lu e th e p o s s ib le v a ria tio n in trip set poi nt[LT SP] due t o ca l i br at i on and i nst r um ent er r or s, t he m ax i m um act ual st eady st at e T H ER M AL P O W ER l ev el at whi ch a t r i p woul d be ac t uat ed i s 11 2% R T P, whi ch i s t he v al ue us ed i n t he saf et y ana l y ses.T o a c c o u n t fo r th e s e e rro rs , th e s a f e ty a n a ly s is m in im u m v a lu e is 4 0% R T P. T h e 1 0% s te p is a m a x im u m v a lu e a s s u m e d in th e s a f e ty anal y si s. T her e i s no unc er t ai nt y appl i ed t o t he s t ep.2.

Power R at e of C hange - H i gh T h is L C O re q u ire s f o u r c h a n n e ls o f P o w e r R a te o f C h a n g e - H ig h to be O PE R AB LE i n MO D ES 1 and 2 , as we l l as i n MO D ES 3, 4, and 5 when t he RT C Bs ar e cl osed and t he CE A D r i v e Sy st em i s c apabl e of C E A w ith d ra w a l.T he hi gh power r at e of cha nge t r i p se r v es a s a b ack up t o t he adm i ni st r at i v el y enf or ced st ar t up r at e l i m i t. T he Func t i on i s no t cr edi t ed i n t he ac ci dent anal y ses; t her ef or e, t he Al l owabl e Val ue f or t he t r i p or by pass F unct i ons i s not der i v ed f r om ana l y t i cal l i m i t s.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-23 R ev. 3.0, 03/31/04 BAS ES LC O (cont i nued)3.

R eact or C ool ant Fl ow - Low T hi s LCO r equi r es f our cha nnel s of R eact or C ool ant Fl ow - Low t o be O PE R AB LE i n MO D ES 1 and 2.T h e trip m a y b e m a n u a ll y b yp a s s e d w h e n T H E R M A L P O W E R f a ll s bel ow 1E-4% R T P. T hi s by pass i s par t of t he Z P M B ci r cui t r y , wh i ch a ls o b yp a s s e s th e T M/L P trip a n d p ro v id e s a T p o w e r b lo c k s ig n a l to t he Q pow er sel ect l ogi c. T hi s ZP M B al l ow s l ow pow er phy si cs t es t i ng at r ed uc ed RC S t emper at ur es an d p r es s ur es. I t al s o a l l ow s heat up and cool down wi t h sh ut down CE As wi t hdr awn.T hi s t r i p i s s et hi gh enou gh t o m ai nt ai n f uel i nt egr i t y dur i ng a l oss of f l ow con di t i on. T he s et t i ng i s l ow enoug h t o al l ow f or nor m al o p e ra tin g f lu c tu a tio n s f ro m o f f s ite p o w e r. T o a c c o u n t fo r a n a ly s is u n c e r t a i n t y , t h e v a l u e i n t h e s a f e t y a n a l y s i s i s 9 3% RTP.4.

Pr ess ur i z er Pr ess ur e - H i gh T hi s LCO r equi r es f our cha nnel s of Pr ess ur i z er Pr ess ur e - H i gh t o be O PE R AB LE i n MO D ES 1 and 2.T h e A l l o w a b l e V a l u e i s s e t h i g h e n o u g h to a l l o w fo r p re s s u re i ncr ease s i n t he R C S dur i ng n or m al ope r at i on (i.e., pl ant t r ansi ent s)n o t i n d i c a t i ve o f a n a b n o rm a l c o n d i t i o n. T h e s e t t i n g i s b e l o w t h e l i ft set poi nt of t he pr ess ur i z er saf et y v al v es a nd l ow enoug h t o i ni t i at e a r eact or t r i p w hen an a bno r m al cond i t i on i s i ndi cat ed. T he d i f f er ence b e tw e e n th e A ll o w a b le V a lu e a n d th e a n a ly s is s e tp o in t o f 2 4 7 0 p s ia in c lu d e s a ll o w a n c e f o r h a rs h e n v iro n m e n t.T he Pr ess ur i z er Pr ess ur e - H i gh t r i p co ncur r ent wi t h PO R V oper at i on avoi ds un nece ssar y ope r at i on o f t he p r essur i z er saf et y v al v es.5.

C ont ai nm ent Pr ess ur e - H i gh T h is L C O re q u ire s f o u r c h a n n e ls o f C o n ta in m e n t P re s s u re - H ig h to be O PE R AB LE i n MO D ES 1 and 2.T h e A l l o w a b l e V a l u e i s h i g h e n o u g h to a l l o w fo r s m a l l p re s s u re in c re a s e s in c o n ta in m e n t e x p e c te d d u rin g n o rm a l o p e ra tio n (i.e., pl ant heat up) t hat ar e not i ndi cat i v e of an abn or m al con di t i on. T he set t i ng i s l ow enoug h t o i ni t i at e a r eact or t r i p t o pr ev ent con t ai nm ent p r e s s u r e f r o m e x c e e d i n g d e s i g n p r e s s u r e f o l l o w i n g a DBA.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-24 R ev. 3.0, 03/31/04 BAS ES LC O (cont i nued)6.

St eam G ener at or Pr ess ur e - Low T hi s LCO r equi r es f our cha nnel s of St eam G ener at or Pr ess ur e - Low per st eam gener at or t o be OP ER AB LE i n MO D ES 1 and 2.T he Al l owabl e Val ue i s s uf f i ci ent l y bel ow t he f ul l l oad ope r at i ng v al ue f or st eam pr ess ur e so as n ot t o i nt er f er e wi t h nor m al pl ant oper at i on, but st i l l hi gh enou gh t o pr ov i de t he r equi r ed pr ot ect i on i n t he ev ent of ex ces si v e st eam dem and. Si nce ex ces si v e st eam dem and c ause s t he RC S t o co ol down, r esul t i ng i n pos i t i v e r eact i v i t y addi t i on t o t he c o re , a re a c to r trip is re q u ire d to o f f s e t th a t e f f e c t.T h e d iff e re n c e b e tw e e n th e A ll o w a b le V a lu e a n d th e s a f e ty a n a ly s is v al ue o f 600 psi a i ncl ude s har sh en v i r onm ent unce r t ai nt i es.T he Func t i on m ay be m anual l y by pass ed as st eam gener at or pr essur e i s r edu ced d ur i ng co nt r ol l ed p l ant shut dow ns. T hi s by pass is p e rm itte d a t a p re s e t s te a m g e n e ra to r p re s s u re. T h e b yp a s s , in conj unct i on wi t h t he ZPM B, al l ows t est i ng at l ow t em per at ur es a nd p r e s s u r e s , a n d h e a t u p a n d c o o l d o w n w i t h t h e s h u t d o w n CEAs wi t hdr awn. Fr om a by pass con di t i on t he t r i p wi l l be r ei nst at ed aut om at i cal l y as s t eam gener at or pr ess ur e i ncr ease s ab ov e t he pr eset pr ess ur e.7.a, 7.b.

St eam G ener at or Lev el - Low T hi s LCO r equi r es f our cha nnel s of St eam G ener at or Lev el - Low per st eam gener at or t o be OP ER AB LE i n MO D ES 1 and 2.T he Al l owabl e Val ue i s s uf f i ci ent l y bel ow t he nor m al oper at i ng l ev el f or t he s t eam gener at or s s o as not t o ca use a r eact or t r i p dur i ng nor m al pl ant oper at i ons. T he t r i p se t poi nt i s hi gh enou gh t o ens ur e a r eact or t r i p si gnal i s ge ner at ed bef or e wat er l ev el dr ops bel ow t he t op of t he f eed r i ng. T he di f f er ence bet ween t he Al l owabl e Val ue and t he m e a s u re m e n t v a lu e in c lu d e s 1 0 in c h e s o f m e a s u re m e n t u n c e rta in ty. T h e s p e c i fie d s e tp o i n t e n s u re s th e re w i l l b e s u ff i c i e n t w a te r i n v e n to ry t o pr ov i de a 10 m i nut e m ar gi n bef or e aux i l i ar y f eedwat er i s r equi r ed f o r th e re m o v a l o f d e c a y h e a t.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-25 R ev. 3.0, 03/31/04 BAS ES LC O (cont i nued)8.

Ax i al Power D i st r i but i on (AP D) - H i gh T h is L C O re q u ire s f o u r c h a n n e ls o f A P D - H ig h to b e O P E R A B L E in M O D E 1 $ 1 5% RTP.T he Al l owabl e Val ue c ur v e was der i v ed f r om an ana l y si s of m any ax i al power sha pes wi t h al l owanc es f or i nst r um ent at i on i nacc ur aci es a n d t h e u n c e r t a i n t y a s s o c i a t e d w i t h t h e e x c o r e t o i n c o r e ASI r el at i onsh i p.T he AP D t r i p i s au t om at i cal l y by pass ed at < 15% R T P, wher e i t i s no t r equi r ed f or r eact or pr ot ect i on.9.

T h e rm a l M a rg in a.

Th e r m a l Ma r g i n/L o w Pr e s s u r e (TM/L P)T h is L C O re q u ire s f o u r c h a n n e ls o f T M/L P to b e O P E R A B L E in M O D ES 1 and 2.T he Al l owabl e Val ue i ncl udes al l owanc es f or equi pm ent re s p o n s e ti m e , m e a s u re m e n t u n c e rta i n ti e s , p ro c e s s i n g e rro r, and a f ur t her al l owanc e t o co m pens at e f or t he t i m e del ay associ at ed w i t h pr ovi di ng e f f ect i v e t er m i nat i on o f t he o ccur r ence t hat ex hi bi t s t he m ost r api d dec r ease i n m ar gi n t o t he SL.Th i s t r i p may b e man u a l l y b y p a s s e d w h e n THERMAL POW ER f a l l s b e l o w 1 E-4% RTP. Th i s b y p a s s i s p a r t o f t h e ZP MB ci r cui t r y , whi ch a l so b y pass es t he React or C ool ant Fl ow - Low t r i p an d pr ovi des a T pow er bl ock si gna l t o t he Q pow er sel ect l ogi c. T hi s ZPM B al l ows l ow power phy si cs t est i ng at r educ ed R C S t em per at ur es a nd pr ess ur es. I t al so a l l ows he at up and cool down wi t h sh ut down CE As wi t hdr awn.b.

S t eam G ene r at or P r essur e D i f f er ence T h i s L C O re q u i re s fo u r c h a n n e l s o f S te a m G e n e ra to r P re s s u re D i f f er ence t o be OP ER AB LE i n MO D ES 1 and 2.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-26 R ev. 3.0, 03/31/04 BAS ES LC O (cont i nued)T he Al l owabl e Val ue i s hi gh enou gh t o av oi d t r i ps c ause d by n o r m a l o p e r a t i o n a n d mi n o r t r a n s i e n t s , b u t e n s u r e s DNBR pr ot ect i on i n t he e v ent of D esi gn B asi s E v ent s. T he d i f f er ence bet ween t he Al l owabl e Val ue and t he 175 psi a anal y si s s et poi nt a llo w s f o r 4 0 p s ia o f m e a s u r e m e n t u n c e r ta in ty.T he t r i p m ay be by pass ed when TH ER M AL P O W ER f al l s be l ow 1 E-4% R T P. T h e S te a m G e n e ra to r P re s s u re D iff e re n c e is s u b je c t to th e Z P M B , s in c e it i s a n in p u t to th e T M/L P trip a n d is not r equ i r ed f or pr ot ect i on a t l ow pow er l evel s.10.

Loss of Load T he LCO r equi r es f our Los s of Load t r i p ch annel s t o be OP ER AB LE i n MO D E 1 ³ 1 5% RTP.Th e L o s s o f L o a d t r i p may b e b y p a s s e d w h e n THERMAL POW ER f al l s be l ow 15%, si nce i t i s no l onger needed t o pr ev ent l i f t i ng of t he p r e s s u r i z e r s a f e t y v a l v e s , s t e a m g e n e r a t o r s a f e t y v a l v e s , o r PORVs i n t he ev ent of a Los s of Load. T he Nucl ear St eam Suppl y Sy st em and t he St eam D um p Sy st em ar e ca pabl e of acc om m odat i ng t he L o s s o f L o a d w ith o u t re q u irin g th e u s e o f th e a b o v e e q u ip m e n t.I nt er l ock s/By pass es T he LCO on by pass per m i ss i v e r em ov al cha nnel s r equi r es t hat t he a u to m a tic b yp a s s re m o v a l fe a tu re o f a ll f o u r o p e ra tin g b yp a s s c h a n n e ls be O PE R AB LE f or eac h R PS Funct i on wi t h an op er at i ng by pass i n t he M O D E S add r essed i n t he sp eci f i c LC O f or each Fu nct i on. A l l f our by pass r em ov al cha nnel s m ust be O PE R AB LE t o ens ur e t hat none o f t he f our R PS cha nnel s ar e i nadv er t ent l y by pass ed.T he L C O app l i es t o t he b y pass r em oval f eat ur e on l y. I f t he b y pass enabl e Funct i on i s f ai l ed s o as t o pr ev ent ent er i ng a by pass con di t i on, oper at i on m ay con t i nue.T he i nt er l ock Al l owabl e Val ues ar e bas ed on a nal y si s r equi r em ent s f or t h e b y p a s s e d f u n c t i o n s. Th e s e a r e d i s c u s s e d a b o v e a s p a r t o f t h e L CO di scussi on f or t he a f f ect ed F unct i ons.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-27 R ev. 3.0, 03/31/04 BAS ES AP PLI C AB I LI T Y T hi s LCO i s ap pl i cabl e i n ac cor danc e wi t h T abl e 3.3.1-1. Most R PS t r i ps a re re q u ire d to b e O P E R A B L E in M O D E S 1 a n d 2 b e c a u s e th e re a c to r is cr i t i cal i n t hese MO D ES. T he t r i ps a r e des i gned t o t ake t he r eact or s u b c ritic a l, m a in ta in in g th e S L s d u rin g A O O s a n d a s s is tin g th e E S F A S in p ro v i d i n g a c c e p ta b l e c o n s e q u e n c e s d u ri n g a c c i d e n ts. E x c e p ti o n s a re a d d r e s s e d i n f o o t n o t e s t o t h e t a b l e. E x c e p t i o n s t o t h i s A P P L I CA B I L I TY ar e:*

Th e APD - H ig h T ri p a nd L os s o f L oa d a re on ly a pp lic a ble in MODE 1 $ 15% RTP beca use they may be automatica lly by passed a t< 15% RTP, wher e they are no longe r nee ded.*

The Power Rate of Chang e - H igh tr ip, RP S L og ic, RTCBs, and Man ual Tri p are als o req ui red i n M ODE S 3, 4, and 5, wi th th e R TC Bs closed, to provide pr otection for bor on dilution and CEA withdrawal events. The Power Rate of Chang e - H igh tr ip in these lower MO DES is a dd re sse d in L CO 3.3.2, " Re a c tor Pr ote c tiv e Sy ste m (RPS)I nstrumentation - Shutdown." The RPS L og ic in MODES 1, 2, 3, 4, and 5 is addre ssed in L CO 3.3.3.M o s t trip s a re n o t re q u ire d to b e O P E R A B L E in M O D E S 3 , 4 , a n d 5. In M O D E S 3 , 4 , a n d 5 , th e e m p h a s is is p la c e d o n re tu rn to p o w e r e v e n ts. Th e r e a c t o r i s p r o t e c t e d i n t h e s e MODES b y e n s u r i n g a d e q u a t e SDM.AC T I O N S T he m ost com m on c ause s of cha nnel i noper abi l i t y ar e out r i ght f ai l ur e or dr i f t of t he b i st abl e or pr ocess m odu l e suf f i ci ent t o exceed t he t ol er ance al l owed by t he pl ant spe ci f i c s et poi nt anal y si s. T y pi cal l y , t he dr i f t i s f ound t o be s m al l and r esul t s i n a del ay of act uat i on r at her t han a t ot al l oss of f unct i on. T hi s de t er m i nat i on i s ge ner al l y m ade dur i ng t he per f or m ance of a C H AN N EL FU N C T I O N AL T ES T when t he pr oces s i nst r um ent i s s et up f or adj ust m ent t o br i ng i t t o w i t hi n spe ci f i cat i on. I f t he t r i p set poi nt i s l ess non-cons er v at i v e t hanwi t h r espe ct t o t he Al l owabl e Val ue i n T abl e 3.3.1-1 , th e c h a n n e l i s d e c la re d in o p e ra b le im m e d ia te ly , a n d th e a p p ro p ria te C o n d itio n (s) m u s t b e e n te r e d im m e d ia te ly.In th e e v e n t a c h a n n e l's trip s e tp o in t is f o u n d n o n-c o n s e rv a tiv e w ith r espe ct t o t he Al l owabl e Val ue, or t he t r ansm i t t er , i nst r um ent l oop, si gnal pr oces si ng el ect r oni cs , or R PS bi st abl e t r i p uni t i s f ound i noper abl e, t hen al l af f ect ed Func t i ons pr ov i ded by t hat cha nnel m ust be dec l ar ed i noper abl e, and t he pl ant m ust ent er t he Condi t i on f or t he par t i cul ar pr ot ect i on Func t i on af f ect ed.W hen t he num ber of i noper abl e ch annel s i n a t r i p Funct i on ex ceed s t hat spec i f i ed i n any r el at ed Condi t i on as soc i at ed wi t h t he s am e t r i p Funct i on, th e n th e p la n t is o u ts id e th e s a f e ty a n a ly s is. T h e re f o re , L C O 3.0.3 is i m m edi at el y ent er ed i f appl i cabl e i n t he c ur r ent MO D E of oper at i on.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-28 R ev. 3.0, 03/31/04 BAS ES AC T I O N S (cont i nued)A N ot e has been a dded t o t he AC T I O N S t o cl ar i f y t he appl i cat i on of t he C om pl et i on T i m e r ul es. T he Condi t i ons of t hi s Speci f i cat i on m ay be ent er ed i nde pen den t l y f or each Fu nct i on. T he C om pl et i on T i m es of each i noper abl e Funct i on wi l l be t r ack ed s epar at el y f or eac h Funct i on, st ar t i ng f r om t he t i m e t he Condi t i on was ent er ed.A.1 , A.2.1 , a n d A.2.2 Co n d i t i o n A a p p l i e s t o t h e f a i l u r e o f a s i n g l e c h a n n e l i n a n y RPS a u t o m a t i c t ri p F u n c t i o n. R P S c o i n c i d e n c e l o g i c i s n o rm a l l y t w o-o u t-o f-fo u r.If o n e R P S b is ta b le trip u n it o r a s s o c ia te d in s tru m e n t c h a n n e l i s i noper abl e, st ar t up or power oper at i on i s al l owed t o co nt i nue, pr ov i di ng t he i noper abl e t r i p uni t i s pl aced i n by pass or t r i p wi t hi n 1 hou r (R equi r ed Act i on A.1). W i t h one c hannel i n by pass , no add i t i onal r andom f ai l ur e of a si ngl e ch annel cou l d sp ur i ousl y t r i p t he r eact or and a v al i d t r i p si gnal can st i l l t r i p t he r eact or. W i t h one c hannel i n t r i p, an add i t i onal r andom f a il u re o f a s in g le c h a n n e l c o u ld s p u rio u s ly trip th e re a c to r. T h e re f o re , it i s pr ef er abl e t o pl ace an i noper abl e ch annel i n by pass r at her t han t r i p.T he Com pl et i on T i m e of 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> al l ot t ed t o r est or e, by pass , or t r i p t he chan nel i s s uf f i ci ent t o al l ow t he oper at or t o t ake al l appr opr i at e ac t i ons f or t he f ai l ed c hannel whi l e ens ur i ng t hat t he r i sk i nv ol v ed i n oper at i ng wi t h t he f ai l ed c hannel i s ac cept abl e.T h e f a il e d c h a n n e l i s re s to re d to O P E R A B L E s ta tu s o r is p la c e d in trip w ith in [4 8] h o u rs (R e q u ire d A c tio n A.2.1 o r R e q u ire d A c tio n A.2.2). R equi r ed Act i on A.2.1 r est or es t he f ul l cap abi l i t y of t he Func t i on.[ R equi r ed Act i on A.2.2 pl aces t he Func t i on i n a one-out-of-t hr ee conf i gur at i on. I n t hi s c onf i gur at i on, com m on c ause f ai l ur e of depend ent c h a n n e ls c a n n o t p re v e n t trip. ]T he Com pl et i on T i m e of [48] hour s i s ba sed on oper at i ng ex per i ence , whi ch h as d em onst r at ed t hat a r andom f ai l ur e of a se cond cha nnel o c c u rrin g d u rin g th e [4 8] h o u r p e rio d is a lo w p ro b a b il ity e v e n t.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-29 R ev. 3.0, 03/31/04 BAS ES AC T I O N S (cont i nued)B.1 a n d B.2 C o n d iti o n B a p p li e s to th e f a il u re o f tw o c h a n n e ls in a n y R P S a u to m a tic t r i p Funct i on.R e q u ire d A c tio n B.1 p ro v id e s f o r p la c in g o n e in o p e ra b le c h a n n e l i n b yp a s s a n d th e o th e r c h a n n e l i n trip w ith in th e C o m p le tio n T im e o f 1 h o u r. T h is C o m p le tio n T im e is s u f f ic ie n t to a ll o w th e o p e ra to r to ta k e a ll app r opr i at e act i ons f or t he f ai l ed ch ann el s wh i l e en sur i ng t hat t he r i sk i nv ol v ed i n oper at i ng wi t h t he f ai l ed c hannel s i s ac cept abl e. W i t h one c h a n n e l o f p ro te c tiv e in s tru m e n ta tio n b yp a s s e d , th e R P S is in a tw o-o u t-of-t hr ee l ogi c; but wi t h anot her cha nnel f ai l ed, t he RP S m ay be ope r at i ng i n a t wo-out-of-t wo l ogi c. T hi s i s ou t si de t he as sum pt i ons m ade i n t he anal y ses and s houl d be c or r ect ed. T o co r r ect t he pr obl em , t he s econ d c h a n n e l i s p la c e d in trip. T h is p la c e s th e R P S in a o n e-o u t-o f-tw o lo g ic. If any of t he ot her O PE R AB LE channel s r ecei v es a t r i p si gnal , t he r eact or wi l l t r i p.O n e c h a n n e l s h o u l d b e re s to re d to O P E R A B L E s ta tu s w i th i n [4 8] h o u rs f or r easo ns s i m i l ar t o t hose st at ed unde r C ondi t i on A. Af t er one c hannel is re s to re d to O P E R A B L E s ta tu s , th e p ro v is io n s o f C o n d iti o n A s til l a p p ly to th e re m a in in g in o p e ra b le c h a n n e l. T h e re f o re , th e c h a n n e l th a t is s til l in o p e ra b le a f te r c o m p le tio n o f R e q u ire d A c tio n B.2 m u s t b e p la c e d in trip i f m or e t han [48] hour s ha v e el apse d si nce t he i ni t i al cha nnel f ai l ur e.C.1 a n d C.2 T he ex cor e det ect or s ar e us ed t o gener at e t he i nt er nal AS I use d as an i n p u t t o th e T M/L P a n d A P D - H i g h tri p s. I n c o re d e te c to rs p ro v i d e a m o re acc ur at e m easu r em ent of AS I. I f one or m or e ex cor e det ect or s c annot be cal i br at ed t o m at ch i ncor e det ect or s, power i s r est r i ct ed or r educ ed dur i ng s u b s e q u e n t o p e ra tio n s b e c a u s e o f in c re a s e d u n c e rta in ty a s s o c ia te d w ith usi ng u ncal i br at ed e x cor e de t ect or s.T h e C o m p le tio n T im e o f 2 4 h o u rs is a d e q u a te to p e rf o rm th e S R w h il e m i ni m i z i ng t he r i sk of oper at i ng i n an un saf e co ndi t i on.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-30 R ev. 3.0, 03/31/04 BAS ES AC T I O N S (cont i nued)D.1 , D.2.1 , D.2.2.1 , a n d D.2.2.2 C o n d iti o n D a p p li e s to o n e a u to m a tic b yp a s s re m o v a l c h a n n e l i n o p e ra b le. I f t he by pass r em ov al cha nnel f or any oper at i ng by pass can not be r est or ed t o O PE R AB LE st at us, t he as soc i at ed RP S channel m ay be cons i der ed O PE R AB LE onl y i f t he by pass i s no t i n ef f ect. O t her wi se, t he a f f e c t e d RPS c h a n n e l mus t b e d e c l a r e d i n o p e r a b l e , a s i n Co n d i t i o n A, a n d th e b yp a s s e ith e r re m o v e d o r th e b yp a s s re m o v a l c h a n n e l re p a ire d. T he Bases f or R equi r ed Act i ons and Com pl et i on T i m es a r e t he s am e as d i s c u s s e d f o r Co n d i t i o n A.E.1 , E.2.1 , a n d E.2.2 C ondi t i on E appl i es t o t wo i noper abl e aut om at i c by pass r em ov al c h a n n e ls. If th e b yp a s s re m o v a l c h a n n e ls c a n n o t b e re s to re d to O PE R AB LE st at us, t he as soc i at ed RP S channel m ay be c onsi der ed O PE R AB LE onl y i f t he by pass i s no t i n ef f ect. O t her wi se, t he af f ect ed R PS cha nnel s m ust be dec l ar ed i noper abl e, as i n C ondi t i on B, and t he by pass ei t her r em ov ed or t he by pass r em ov al cha nnel r epai r ed. Al so, R equi r ed Act i on E.2.2 pr ov i des f or t he r est or at i on of t he one af f ect ed aut om at i c t r i p ch annel t o O PE R AB LE st at us wi t hi n t he r ul es o f C o m p l e ti o n T i m e s p e c i fie d u n d e r C o n d i ti o n B. C o m p l e ti o n T i m e s a re c o n s i s t e n t w i t h Co n d i t i o n B.F.1 C ondi t i on F i s en t er ed when t he Requi r ed Act i on and ass oci at ed C om pl et i on T i m e of C ondi t i ons A, B, C , D , or E ar e not m et f or t he Ax i al P ow er D i st r i but i on a nd L oss of Loa d T r i p F unct i ons.I f t he Requi r ed Act i ons ass oci at ed wi t h t hese C ondi t i ons cann ot be com pl et ed wi t hi n t he r equi r ed Com pl et i on T i m es, t he r eact or m ust be br ought t o a MO D E i n whi ch t he Requi r ed Act i ons do not appl y. T he a ll o w e d C o m p le tio n T im e o f 6 h o u rs to re d u c e T H E R M A L P O W E R to< 15% R T P i s r easo nab l e, base d on ope r at i ng e x per i ence , t o de cr ease power t o < 1 5% R T P f r om f ul l power con di t i ons i n an or der l y m anner and wi t hou t chal l eng i ng p l ant sy st em s.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-31 R ev. 3.0, 03/31/04 BAS ES AC T I O N S (cont i nued)G.1 C ondi t i on G i s en t er ed when t he Requi r ed Act i on and ass oci at ed C o m p le tio n T im e o f C o n d iti o n s A , B , C , D , E , o r F a re n o t m e t.I f t he Requi r ed Act i ons ass oci at ed wi t h t hese C ondi t i ons cann ot be com pl et ed wi t hi n t he r equi r ed Com pl et i on T i m es, t he r eact or m ust be br ought t o a MO D E i n whi ch t he Requi r ed Act i ons do not appl y. T he al l owed Com pl et i on T i m e of 6 hour6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> s t o be i n MO D E 3 i s r easo nabl e, b a s e d o n o p e ra tin g e x p e rie n c e , fo r re a c h in g th e re q u ire d M O D E f ro m f u ll power con di t i ons i n an or der l y m anner and wi t hout cha l l engi ng pl ant sy st em s.S U R V E I L L A N C E T h e S R s fo r a n y p a rt i c u l a r R P S F u n c t i o n a re fo u n d i n t h e S R c o l u m n o f REQUI REMENTS Ta b l e 3.3.1-1 f o r t h a t Fu n c t i o n. Mo s t Fu n c t i o n s a r e s u b j e c t t o CHANNEL CH E CK , CH A NN E L F UN CTI ONA L TE S T, CH A NN E L CA L I B RA TI ON, and r espo nse t i m e t est i ng.-----------------------------------R E V IE W E R'S N O T E-----------------------------------I n or der f or a pl ant t o t ake cr edi t f or t opi cal r epor t s as t he bas i s f or j u s t i fy i n g F re q u e n c i e s , t o p i c a l re p o rt s m u s t b e s u p p o rt e d b y a n N R C s t a ff SE R t hat est abl i shes t he ac cept abi l i t y of eac h t opi cal r epor t f or t hat pl ant (R e f. 9).---------------------------------------------------------------------------------------------------------------------------------- R E V IE W E R'S N O T E ------------------------------------T he Not es i n T abl e 3.3.1-1 r equi r i ng r eset of t he c hannel t o a pr edef i ned a s-le f t to le ra n c e a n d th e v e rif ic a tio n o f th e a s-f o u n d to le ra n c e a re o n ly a s s o c ia te d w ith S L-L S S S v a lu e s. T h e re f o re , th e N o te s a re a p p li e d to spec i f i c SR s f or t he as soc i at ed f unct i ons i n t he SR col um n onl y. T he N ot es m ay be pl aced at t he t op of t he Al l owabl e Val ue c ol um n i n t he T abl e and a ppl i ed t o al l Funct i ons wi t h al l owabl e v al ues i n t he t abl e.---------------------------------------------------------------------------------------------------------------------------------- R E V IE W E R'S N O T E ------------------------------------N o te s 1 a n d 2 a re a p p li e d to th e s e tp o in t v e rif ic a tio n S u rv e il la n c e s f o r a ll S L-L S S S F u n c tio n s u n le s s o n e o r m o r e o f th e f o llo w in g e x c lu s io n s a p p ly: 1.

N o te s 1 a n d 2 a re n o t a p p l i e d to S L-L S S S F u n c ti o n s w h i c h u ti l i ze m echa ni cal com ponent s t o se nse t he t r i p se t poi nt or t o m anual i ni t i at i on c i r cui t s (t he l at t er ar e not ex pl i ci t l y m odel ed i n t he ac ci dent ana l y si s). E x am pl es of m echa ni cal com pon ent s ar e l i m i t swi t ches, f l oat swi t ches , pr ox i m i t y det ect or s, m anual act uat i on s wi t ches , and ot her suc h dev i ces t hat ar e nor m al l y onl y che ck ed on a " go/no go" basi s. N ot e 1 r equ i r es a co m par i son o f t he p er i odi c sur v ei l l ance r equi r em ent r esul t s t o pr ov i de an i ndi cat i on of cha nnel (or i ndi v i dual devi ce) per f or m ance. T hi s com par i son i s not v al i d f or m ost R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-32 R ev. 3.0, 03/31/04 m e c h a n ic a l c o m p o n e n ts. W h il e it i s p o s s ib le to v e rif y th a t a li m it s w itc h f u n c tio n s a t a p o in t o f tra v e l, a c h a n g e in th e s u rv e il la n c e re s u lt pr obabl y i ndi cat es t hat t he s wi t ch h as m ov ed, not t hat t he i nput/out put r el at i onsh i p ha s chan ged. T her ef or e, a com par i son o f sur v ei l l ance r equi r em ent r esul t s woul d not pr ov i de an i ndi cat i on of t he c hannel or com ponent per f or m ance.2.

N ot es 1 and 2 a r e not appl i ed t o T echn i cal Speci f i cat i ons ass oci at ed wi t h m echa ni cal l y oper at ed s af et y r el i ef v al v es. T he per f or m ance of t hese com ponent s i s al r eady con t r ol l ed (i.e., t r ended wi t h as-l ef t and a s-f o u n d l i mi t s) u n d e r t h e A S M E S e c t i o n X I t e s t i n g p r o g r a m.3.

N ot es 1 and 2 a r e m ay not appl y i ed t o SL-LSS S F unct i ons and Sur v ei l l ance s whi ch t est onl y di gi t al com ponent s. For pur el y di gi t al com pon ent s, such a s act uat i on l ogi c ci r cui t s and associ at ed r el ay s, t her e i s no e x pect ed ch ang e i n r esul t bet we en su r v ei l l ance per f or m ance s ot her t han m easu r em ent and t est er r or s (M&T E) and, t her ef or e, j ust i f i cat i on i s ne eded t o co nf i r m t hat com par i son of Sur v ei l l ance r esul t s do es n ot pr ov i de an i ndi cat i on of cha nnel or com ponent per f or m ance.An ev al uat i on of t he pot ent i al SL-LSS S F unct i ons r esul t ed i n N ot es 1 and 2 be i ng a ppl i ed t o t he F unct i ons sh ow n i n t he T S m ar kups. E ach l i cens ee pr opos i ng t o f ul l y adopt t hi s TS T F m ust r ev i ew t he pot ent i al SL-L SSS Fu n c t i o n s t o i d e n t i f y w h i c h o f t h e i d e n t i f i e d f u n c t i o n s a r e SL-L SSS a c c o rd in g to th e d e f in iti o n o f S L-L S S S a n d th e ir p la n t s p e c ific s a f e ty anal y si s. T he t wo T ST F N ot es a r e not r equi r ed t o be ap pl i ed t o any of t he l i st ed Func t i ons whi ch m eet any of t he ex cl usi on c r i t er i a or ar e not SL-L S S S b a s e d o n th e p la n t s p e c ific d e s ig n a n d a n a ly s is..-------------------------------------------------------------------------------------------------S R 3.3.1.1 Per f or m ance of t he CH AN N EL C H EC K once ev er y 12 hou r s en sur es t hat g r o s s f a i l u r e o f i n s t r u me n t a t i o n h a s n o t o c c u r r e d. A CH A NN E L CH E CK i s no r m al l y a co m par i son of t he par am et er i ndi cat ed on o ne c hannel t o a si m i l ar par am et er on ot her cha nnel s. I t i s ba sed on t he as sum pt i on t hat i nst r um ent cha nnel s m oni t or i ng t he s am e par am et er sho ul d r ead ap pr ox i m at el y t he s ame v al ue. Si gn i f i c an t de v i at i on s be t we en t he t wo in s tru m e n t c h a n n e ls c o u ld b e a n in d ic a tio n o f e x c e s s iv e in s tru m e n t d rif t in o n e o f t h e c h a n n e l s o r o f s o m e t h i n g e v e n mor e s e r i o u s. CHANNEL C H EC K wi l l det ect gr oss cha nnel f ai l ur e; t hus, i t i s k ey t o v er i f y i ng t hat t he i nst r um ent at i on co nt i nue s t o op er at e pr ope r l y bet we en e ach CH A NN E L CA L I B RA TI ON.Agr eem ent cr i t er i a ar e det er m i ned by t he pl ant st af f bas ed on a com bi nat i on of t he c hannel i nst r um ent unc er t ai nt i es, i ncl udi ng i ndi cat i on and r eadabi l i t y. I f a ch annel i s ou t si de t he c r i t er i a, i t m ay be an i ndi cat i on t hat t he t r ansm i t t er or t he s i gnal pr oces si ng equi pm ent has dr i f t ed out si de i t s l i m i t s.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-33 R ev. 3.0, 03/31/04 R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-34 R ev. 3.0, 03/31/04 BAS ES SU R VE I LLAN C E R EQ U I R EM EN T S (cont i nued)T he F r equ ency , abo ut once ever y shi f t , i s base d on ope r at i ng e x per i ence t hat dem onst r at es t he r ar i t y of cha nnel f ai l ur e. Si nce t he pr obabi l i t y of tw o ra n d o m f a il u re s in re d u n d a n t c h a n n e ls in a n y 1 2 h o u r p e rio d is ex t r em el y l ow, t he CH AN N EL C H EC K m i ni m i z es t he c hanc e of l oss of p r o t e c t i v e f u n c t i o n d u e t o f a i l u r e o f r e d u n d a n t c h a n n e l s. Th e CHANNEL C H EC K suppl em ent s l ess f or m al , but m or e f r equent , che ck s of cha nnel O PE R AB I LI T Y dur i ng nor m al oper at i onal use of t he di spl ay s as soc i at ed wi t h t he L C O r equ i r ed ch ann el s.S R 3.3.1.2 A d a i l y c a l i b r a t i o n (h e a t b a l a n c e) i s p e r f o r m e d w h e n THERMAL POW ER i s $ 20%. T he dai l y cal i br at i on s hal l con si st of adj ust i ng t he " nucl ear power cal i br at e" pot ent i om et er s t o agr ee wi t h t he c al or i m et r i c c al cul at i on i f t he abs ol ut e di f f er ence i s > 1.5%. T he " T power cal i br at e" p o te n ti o m e te rs a re th e n u s e d to n u l l th e "n u c l e a r p o w e r - T p o w e r" in d ic a to rs o n th e R P S R e a c to r P o w e r C a li b ra tio n a n d In d ic a tio n p a n e l. Per f or m ance of t he dai l y cal i br at i on ens ur es t hat t he t wo i nput s t o t he Q pow er m easu r em ent ar e i ndi cat i ng a ccur at el y wi t h r espe ct t o t he m uch m or e ac cur at e se cond ar y cal or i m et r i c c al cul at i on.T he Fr equenc y of 24 hou r s i s ba sed on pl ant oper at i ng ex per i ence and ta k e s in to a c c o u n t in d ic a tio n s a n d a la rm s lo c a te d in th e c o n tro l ro o m to d e te c t d e v ia tio n s in c h a n n e l o u tp u ts. T h e F r e q u e n c y is m o d if ie d b y a N ot e i ndi cat i ng t hi s Sur v ei l l ance m ust be per f or m ed wi t hi n 12 ho ur s af t er T H E R M A L P O W E R i s $ 2 0% R T P. T h e s e c o n d a ry c a lo rim e tric is in a c c u ra te a t lo w e r p o w e r le v e ls. T h e 1 2 h o u rs a ll o w s tim e re q u ire m e n ts f or pl ant st abi l i z at i on, dat a t aki ng, and i nst r um ent cal i br at i on.A secon d N ot e i ndi cat es t he dai l y cal i br at i on m ay be s uspe nded du r i ng PH Y SI C S T ES T S. T hi s en sur es t hat cal i br at i on i s pr oper pr eced i ng and f ol l owi ng phy si cs t est i ng at eac h pl at eau, r ecog ni z i ng t hat dur i ng t est i ng, chan ges i n power di st r i but i on and R C S t em per at ur e m ay r ender t he cal or i m et r i c i nacc ur at e.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-35 R ev. 3.0, 03/31/04 BAS ES SU R VE I LLAN C E R EQ U I R EM EN T S (cont i nued)S R 3.3.1.3 I t i s ne ces sar y t o ca l i br at e t he ex cor e power r ange c hannel upper and l ower sub chan nel am pl i f i er s s uch t hat t he i nt er nal AS I use d i n t he T M/LP and APD - H i gh t r i ps r ef l ect s t he t r ue c or e power di st r i but i on as det er m i ned by t he i ncor e det ect or s. A N ot e t o t he Fr equenc y i ndi cat es th e S u rv e il la n c e is re q u ire d w ith in 1 2 h o u rs a f te r T H E R M A L P O W E R is$ [20]% R T P. U ncer t ai nt i es i n t he ex cor e and i ncor e m easu r em ent p ro c e s s m a k e it i m p ra c tic a l to c a li b ra te w h e n T H E R M A L P O W E R is< [20]% R T P. T he Com pl et i on T i m e of 12 hou r s al l ows t i m e f or pl ant s ta b i l i za ti o n , d a ta ta k i n g , a n d i n s tru m e n t c a l i b ra ti o n. I f th e e x c o re det ect or s ar e no t pr ope r l y cal i br at ed t o ag r ee w i t h t he i ncor e de t ect or s, power i s r est r i ct ed dur i ng s ubse quent oper at i ons beca use of i ncr ease d unce r t ai nt y ass oci at ed wi t h us i ng unc al i br at ed ex cor e det ect or s. T he 31 day Fr equenc y i s ad equat e, bas ed on o per at i ng ex per i ence of t he e x c o re l i n e a r a m p l i fie rs a n d th e s l o w b u rn u p o f th e d e te c to rs. T h e e x c o re r eadi ngs ar e a s t r ong f unct i on of t he power pr oduc ed i n t he per i pher al f u e l b u n d le s a n d d o n o t re p re s e n t a n in te g ra te d re a d in g a c ro s s th e c o re. Sl ow cha nges i n neut r on f l ux dur i ng t he f uel cy cl e ca n al so b e det ect ed at th is F r e q u e n c y.S R 3.3.1.4 A C H AN N EL FU N C T I O N AL T ES T i s pe r f or m ed on e ach R PS i nst r um ent c h a n n e l, e x c e p t L o s s o f L o a d a n d P o w e r R a te o f C h a n g e , e v e r y [9 2] d a ys t o ens ur e t he ent i r e ch annel wi l l per f or m i t s i nt ended f unct i on when needed. A succ ess f ul t est of t he r equi r ed c ont act (s) of a ch annel r el ay m a y b e p e rf o rm e d b y th e v e rif ic a tio n o f th e c h a n g e o f s ta te o f a s in g le c o n t a c t o f t h e r e l a y. Th i s c l a r i f i e s w h a t i s a n a c c e p t a b l e CHANNEL FU N C T I O N AL T ES T of a r el ay. T hi s i s ac cept abl e bec ause al l of t he ot her r equi r ed c ont act s of t he r el ay ar e v er i f i ed by ot her T echn i cal Speci f i cat i ons and non-T echn i cal Speci f i cat i ons t est s at l east onc e per r ef uel i ng i nt er v al wi t h ap pl i cabl e ext ensi ons.I n a d d i t i o n t o p o w e r s u p p l y t e s t s , Th e RPS CHA NNEL FUNCTI ONAL T E S T c o n s is ts o f th re e o v e rla p p in g te s ts a s d e s c rib e d in R e f e re n c e 8. T hese t est s v er i f y t hat t he RP S i s c apabl e of per f or m i ng i t s i nt ended f unct i on, f r om bi st abl e i nput t hr ough t he RT C Bs. T hey i ncl ude:

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-36 R ev. 3.0, 03/31/04 BAS ES SU R VE I LLAN C E R EQ U I R EM EN T S (cont i nued)B is ta b le T e s ts T he b i st abl e set poi nt m ust be f oun d t o t r i p w i t hi ncon ser v at i v e w i t h r espe ct to th e A ll o w a b le V a lu e s s p e c ifie d in th e L C O a n d le f t s e t c o n s is te n t w ith t he as sum pt i ons of t he pl ant spe ci f i c s et poi nt anal y si s (R ef. 7). As -f ound[and as -l ef t] v al ues m ust al so be r ecor ded and r evi ew ed f or consi st ency wi t h t he as sum pt i ons of t he f r equenc y ex t ensi on anal y si s. T he r equi r em ent s f or t hi s r ev i ew ar e out l i ned i n R ef er ence 10.A te s t s ig n a l i s s u p e rim p o s e d o n th e in p u t in o n e c h a n n e l a t a tim e to v er i f y t hat t he bi st abl e t r i ps wi t hi n t he s peci f i ed t ol er ance ar ound t he set poi nt. T hi s i s do ne wi t h t he af f ect ed RP S channel t r i p ch annel by pass ed. Any set poi nt adj ust m ent sha l l be c onsi st ent wi t h t he assum pt i ons o f t he cu r r ent pl ant speci f i c set poi nt ana l y si s.SR 3.3.1.4 f or SL-LSS S F unct i ons i s m odi f i ed by t wo N ot es a s i dent i f i ed i n T abl e 3.3.1-1. T he f i r st N ot e r equi r es e v al uat i on of cha nnel per f or m ance f or t he c ondi t i on wher e t he as-f ound s et t i ng f or t he c hannel s e tp o in t is o u ts id e its a s-f o u n d to le ra n c e b u t c o n s e rv a tiv e w ith re s p e c t to t he Al l owabl e Val ue. Ev al uat i on of i nst r um ent per f or m ance wi l l v er i f y t hat th e in s tru m e n t w il l c o n tin u e to b e h a v e in a c c o rd a n c e w ith s a f e ty a n a ly s is s e tp o in t m e th o d o lo g y a s s u m p tio n s. T h e p u rp o s e o f th e a s s e s s m e n t is to ensu r e co nf i denc e i n t he i nst r um ent per f or m ance pr i or t o r et ur ni ng t he i nst r um ent t o se r v i ce. T hese cha nnel s wi l l al so b e i dent i f i ed i n t he C o rre c tiv e A c tio n P ro g ra m. E n try in to th e C o rre c tiv e A c tio n P ro g ra m w il l ensu r e r equi r ed r ev i ew and do cum ent at i on of t he c ondi t i on f or con t i nued O PE R AB I LI T Y. T he s econ d N ot e r equi r es t hat t he as-l ef t set t i ng f or t he in s tru m e n t b e re tu rn e d to w ith in th e a s-le f t to le ra n c e o f th e [L T S P]. W her e a s et poi nt m or e co nser v at i v e t han t he [LT SP] i s us ed i n t he pl ant sur v ei l l ance pr oced ur es, t he as-l ef t and as-f ound t ol er ance s, as a p p li c a b le , w il l b e a p p li e d to th e s u rv e il la n c e p ro c e d u re s e tp o in t. T h is w il l e n s u re th a t s u f f ic ie n t m a rg in to th e S a f e ty L im it a n d/o r A n a ly tic a l L im it i s m ai nt ai ned. I f t he as-l ef t i nst r um ent set t i ng c annot be r et ur ned t o a set t i ng wi t hi n t he as-l ef t t ol er ance of t he [LT SP], t hen t he i nst r um ent chan nel sha l l be dec l ar ed i noper abl e.T he s econ d N ot e al so r equi r es t hat [LT SP] and t he m et hodol ogi es f or cal cul at i ng t he as-l ef t and t he as-f ound t ol er ance s be i n [a doc um ent c o n tro ll e d u n d e r 1 0 C F R 5 0.5 9]. M a trix L o g ic T e s ts M at r i x Logi c t est s ar e addr ess ed i n LCO 3.3.3. T hi s t est i s pe r f or m ed one m at r i x at a t i m e. I t v er i f i es t hat a co i nci denc e i n t he t wo i nput c h a n n e ls f o r e a c h F u n c tio n re m o v e s p o w e r f ro m th e m a trix re la ys. D u rin g te s tin g , p o w e r is a p p li e d to th e m a trix re la y te s t c o il s a n d p re v e n ts R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-37 R ev. 3.0, 03/31/04 th e m a trix re la y c o n ta c ts f ro m a s s u m in g th e ir d e-e n e rg ize d s ta te. T h is t est wi l l det ect any sho r t ci r cui t s ar ound t he bi st abl e co nt act s i n t he c o in c id e n c e lo g ic , s u c h a s m a y b e c a u s e d b y fa u lty b is ta b le re la y o r trip chan nel by pass co nt act s.T rip P a th T e s ts T rip P a th (In iti a tio n L o g ic) te s ts a re a d d re s s e d in L C O 3.3.3. T h e s e te s ts a re s im il a r to th e M a trix L o g ic te s ts , e x c e p t th a t te s t p o w e r is w ith h e ld f r om one m at r i x r el ay at a t i m e, al l owi ng t he i ni t i at i on c i r cui t t o de-ener gi z e, openi ng t he af f ect ed s et of R T C Bs. T he RT C Bs m ust t hen be c lo s e d p rio r to te s tin g th e o th e r th re e in iti a tio n c irc u its , o r a re a c to r trip m a y re s u lt.T he Fr equenc y of [92] day s i s ba sed on t he r el i abi l i t y anal y si s pr esen t ed i n t opi cal r epor t C EN-327, " R PS/ES FA S E x t ended Test I nt er v al E v a l u a ti o n" (R e f. 1 0).

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-38 R ev. 3.0, 03/31/04 BAS ES SU R VE I LLAN C E R EQ U I R EM EN T S (cont i nued)S R 3.3.1.5 A C H A N N E L C A L IB R A T IO N o f th e e x c o re p o w e r ra n g e c h a n n e l s e v e ry 9 2 d a ys e n s u re s th a t th e c h a n n e ls a re re a d in g a c c u ra te ly a n d w ith in t ol er ance. T he Sur v ei l l ance v er i f i es t hat t he c hannel r espo nds t o a m e a s u re d p a ra m e te r w ith in th e n e c e s s a ry ra n g e a n d a c c u ra c y. C H AN N EL C ALI BR AT I O N l eav es t he c hannel adj ust ed t o ac coun t f or i nst r um ent dr i f t bet ween s ucc ess i v e ca l i br at i ons t o ens ur e t hat t he c h a n n e l r e m a i n s o p e r a t i o n a l b e t w e e n s u c c e s s i v e t e s t s. CHANNEL C A L IB R A T IO N S m u s t b e p e rf o rm e d c o n s is te n t w ith th e p la n t s p e c ific set poi nt ana l y si s.T he as -f ound an d as -l ef t v al ues m ust al so b e r ecor ded and r ev i ewed f or c o n s is te n c y w ith th e a s s u m p tio n s o f th e f re q u e n c y e x te n s io n a n a ly s is. T h e re q u ire m e n ts f o r th is re v ie w a re o u tli n e d in R e f e re n c e [1 0].A N ot e i s ad ded s t at i ng t hat t he neut r on det ect or s ar e ex cl uded f r om C H A N N E L C A L IB R A T IO N b e c a u s e th e y a re p a s s iv e d e v ic e s w ith m i ni m al dr i f t and be caus e of t he di f f i cul t y of si m ul at i ng a m eani ngf ul si gnal. Sl ow cha nges i n det ect or sen si t i v i t y ar e co m pens at ed f or by p e rf o rm in g th e d a il y c a lo rim e tric c a li b ra tio n (S R 3.3.1.2) a n d th e m o n th ly l i near sub chan nel gai n ch eck (SR 3.3.1.3). I n addi t i on, ass oci at ed c ont r ol ro o m in d ic a tio n s a re c o n tin u o u s ly m o n ito re d b y th e o p e ra to rs. SR 3.3.1.5 f or SL-LSS S F unct i ons i s m odi f i ed by t wo N ot es a s i dent i f i ed i n T abl e 3.3.1-1. T he f i r st N ot e r equi r es e v al uat i on of cha nnel per f or m ance f or t he c ondi t i on wher e t he as-f ound s et t i ng f or t he c hannel s e tp o in t is o u ts id e its a s-f o u n d to le ra n c e b u t c o n s e rv a tiv e w ith re s p e c t to t he Al l owabl e Val ue. Ev al uat i on of i nst r um ent per f or m ance wi l l v er i f y t hat th e in s tru m e n t w il l c o n tin u e to b e h a v e in a c c o rd a n c e w ith s a f e ty a n a ly s is s e tp o in t m e th o d o lo g y a s s u m p tio n s. T h e p u rp o s e o f th e a s s e s s m e n t is to ensu r e co nf i denc e i n t he i nst r um ent per f or m ance pr i or t o r et ur ni ng t he i nst r um ent t o se r v i ce. T hese cha nnel s wi l l al so b e i dent i f i ed i n t he C o rre c tiv e A c tio n P ro g ra m. E n try in to th e C o rre c tiv e A c tio n P ro g ra m w il l ensu r e r equi r ed r ev i ew and do cum ent at i on of t he c ondi t i on f or con t i nued O PE R AB I LI T Y. T he s econ d N ot e r equi r es t hat t he as-l ef t set t i ng f or t he in s tru m e n t b e re tu rn e d to w ith in th e a s-le f t to le ra n c e o f th e [L T S P]. W her e a s et poi nt m or e co nser v at i v e t han t he [LT SP] i s us ed i n t he pl ant sur v ei l l ance pr oced ur es, t he as-l ef t and as-f ound t ol er ance s, as a p p li c a b le , w il l b e a p p li e d to th e s u rv e il la n c e p ro c e d u re s e tp o in t. T h is w il l e n s u re th a t s u f f ic ie n t m a rg in to th e S a f e ty L im it a n d/o r A n a ly tic a l L im it i s m ai nt ai ned. I f t he as-l ef t i nst r um ent set t i ng c annot be r et ur ned t o a set t i ng wi t hi n t he as-l ef t t ol er ance of t he [LT SP], t hen t he i nst r um ent chan nel sha l l be dec l ar ed i noper abl e.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-39 R ev. 3.0, 03/31/04 T he s econ d N ot e al so r equi r es t hat [LT SP] and t he m et hodol ogi es f or cal cul at i ng t he as-l ef t and t he as-f ound t ol er ance s be i n [a doc um ent c o n tro ll e d u n d e r 1 0 C F R 5 0.5 9].T he Fr equenc y of 92 day s i s ac cept abl e, bas ed on p l ant oper at i ng ex per i ence , and t akes i nt o ac coun t i ndi cat i ons and al ar m s av ai l abl e t o t he o p e r a t o r i n t h e c o n t r o l r o o m.S R 3.3.1.6 A C H A N N E L F U N C T IO N A L T E S T o n th e L o s s o f L o a d a n d P o w e r R a te of C hange c hannel s i s pe r f or m ed pr i or t o a r eact or st ar t up t o ens ur e t he ent i r e ch annel wi l l per f or m i t s i nt ended f unct i on i f r equi r ed. A succ ess f ul t est of t he r equi r ed c ont act (s) of a ch annel r el ay m ay be per f or m ed by t he v e rif ic a tio n o f th e c h a n g e o f s ta te o f a s in g le c o n ta c t o f th e re la y. T h is c la rif ie s w h a t is a n a c c e p ta b le C H A N N E L F U N C T IO N A L T E S T o f a re la y. T hi s i s ac cept abl e bec ause al l of t he ot her r equi r ed c ont act s of t he r el ay ar e v er i f i ed by ot her T echn i cal Speci f i cat i ons and non-T echn i cal S p e c ific a tio n s te s ts a t le a s t o n c e p e r re f u e li n g in te rv a l w ith a p p li c a b le ex t ensi ons. T he Los s of Load p r ess ur e se nsor can not be t est ed dur i ng re a c to r o p e ra tio n w ith o u t c lo s in g th e h ig h p re s s u re T S V , w h ic h w o u ld r esul t i n a t ur bi ne t r i p or r eact or t r i p. T he Power R at e of C hange - H i gh t r i p Funct i on i s r equi r ed dur i ng s t ar t up oper at i on and i s by pass ed when s h u t d o w n o r > 1 5% RTP.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-40 R ev. 3.0, 03/31/04 BAS ES SU R VE I LLAN C E R EQ U I R EM EN T S (cont i nued)S R 3.3.1.7 SR 3.3.1.7 i s a CH AN N EL FU N C T I O N AL T ES T si m i l ar t o SR 3.3.1.4, e x c e p t S R 3.3.1.7 is a p p li c a b le o n ly to b yp a s s F u n c tio n s a n d is per f or m ed onc e wi t hi n 92 da y s pr i or t o eac h st ar t up. A succ ess f ul t est of t he r equi r ed c ont act (s) of a ch annel r el ay m ay be per f or m ed by t he v e rif ic a tio n o f th e c h a n g e o f s ta te o f a s in g le c o n ta c t o f th e re la y. T h is c la rif ie s w h a t is a n a c c e p ta b le C H A N N E L F U N C T IO N A L T E S T o f a re la y. T hi s i s ac cept abl e bec ause al l of t he ot her r equi r ed c ont act s of t he r el ay ar e v er i f i ed by ot her T echn i cal Speci f i cat i ons and non-T echn i cal S p e c ific a tio n s te s ts a t le a s t o n c e p e r re f u e li n g in te rv a l w ith a p p li c a b le ex t ensi ons. Pr oper oper at i on of by pass per m i ss i v es i s c r i t i cal dur i ng pl ant st ar t up bec ause t he by pass es m ust be i n pl ace t o al l ow st ar t up oper at i on and m ust be r em ov ed at t he appr opr i at e poi nt s du r i ng power a s c e n t to e n a b le c e rta in re a c to r trip s. C o n s e q u e n tly , th e a p p ro p ria te tim e to v e rif y b yp a s s re m o v a l fu n c tio n O P E R A B IL IT Y is ju s t p rio r to s ta rtu p. T he al l owanc e t o co nduc t t hi s t est wi t hi n 92 da y s of st ar t up i s ba sed on t h e r e l i a b i l i t y a n a l y s i s p r e s e n t e d i n t o p i c a l r e p o r t CEN-3 2 7 , " RPS/ESF AS Ex t ended Test I nt er v al Ev al uat i on" (R ef. 10). O nce t he oper at i ng by pass es a r e r em ov ed, t he by pass es m ust not f ai l i n su ch a way t hat t he a s s o c ia te d trip F u n c tio n g e ts in a d v e rte n tly b yp a s s e d. T h is f e a tu re is v e rif ie d b y th e trip F u n c tio n C H A N N E L F U N C T IO N A L T E S T , S R 3.3.1.4. T h e re f o re , fu rth e r te s tin g o f th e b yp a s s f u n c tio n a f te r s ta rtu p is u n n e c e s s a r y.S R 3.3.1.8 S R 3.3.1.8 i s th e p e rfo rm a n c e o f a C H A N N E L C A L IB R A T IO N e v e ry[18] m ont hs.C H AN N EL C ALI BR AT I O N i s a c om pl et e ch eck of t he i nst r um ent cha nnel i ncl udi ng t he s enso r. T he Sur v ei l l ance v er i f i es t hat t he c hannel r espo nds to a m e a s u re d p a ra m e te r w ith in th e n e c e s s a ry ra n g e a n d a c c u ra c y. C H AN N EL C ALI BR AT I O N l eav es t he c hannel adj ust ed t o ac coun t f or i nst r um ent dr i f t bet ween s ucc ess i v e ca l i br at i ons t o ens ur e t hat t he c h a n n e l r e m a i n s o p e r a t i o n a l b e t w e e n s u c c e s s i v e t e s t s. CHANNEL C A L IB R A T IO N S m u s t b e p e rf o rm e d c o n s is te n t w ith th e p la n t s p e c ific set poi nt ana l y si s.T he as -f ound [and as -l ef t] v al ues m ust al so b e r ecor ded and r ev i ewed f o r c o n s is te n c y w ith th e a s s u m p tio n s o f th e f re q u e n c y e x te n s io n a n a ly s is. T h e re q u ire m e n ts f o r th is re v ie w a re o u tli n e d in R e f e re n c e [1 0].SR 3.3.1.8 f or SL-LSS S F unct i ons i s m odi f i ed by t wo N ot es a s i dent i f i ed i n T abl e 3.3.1-1. T he f i r st N ot e r equi r es e v al uat i on of cha nnel R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-41 R ev. 3.0, 03/31/04 per f or m ance f or t he c ondi t i on wher e t he as-f ound s et t i ng f or t he c hannel s e tp o in t is o u ts id e its a s-f o u n d to le ra n c e b u t c o n s e rv a tiv e w ith re s p e c t to t he Al l owabl e Val ue. Ev al uat i on of i nst r um ent per f or m ance wi l l v er i f y t hat th e in s tru m e n t w il l c o n tin u e to b e h a v e in a c c o rd a n c e w ith s a f e ty a n a ly s is s e tp o in t m e th o d o lo g y a s s u m p tio n s. T h e p u rp o s e o f th e a s s e s s m e n t is to ensu r e co nf i denc e i n t he i nst r um ent per f or m ance pr i or t o r et ur ni ng t he i nst r um ent t o se r v i ce. T hese cha nnel s wi l l al so b e i dent i f i ed i n t he C o rre c tiv e A c tio n P ro g ra m. E n try in to th e C o rre c tiv e A c tio n P ro g ra m w il l ensu r e r equi r ed r ev i ew and do cum ent at i on of t he c ondi t i on f or con t i nued O PE R AB I LI T Y. T he s econ d N ot e r equi r es t hat t he as-l ef t set t i ng f or t he in s tru m e n t b e re tu rn e d to w ith in th e a s-le f t to le ra n c e o f th e [L T S P]. W her e a s et poi nt m or e co nser v at i v e t han t he [LT SP] i s us ed i n t he pl ant sur v ei l l ance pr oced ur es, t he as-l ef t and as-f ound t ol er ance s, as a p p li c a b le , w il l b e a p p li e d to th e s u rv e il la n c e p ro c e d u re s e tp o in t. T h is w il l e n s u re th a t s u f f ic ie n t m a rg in to th e S a f e ty L im it a n d/o r A n a ly tic a l L im it i s m ai nt ai ned. I f t he as-l ef t i nst r um ent set t i ng c annot be r et ur ned t o a set t i ng wi t hi n t he as-l ef t t ol er ance of t he [LT SP], t hen t he i nst r um ent chan nel sha l l be dec l ar ed i noper abl e.T he s econ d N ot e al so r equi r es t hat [LT SP] and t he m et hodol ogi es f or cal cul at i ng t he as-l ef t and t he as-f ound t ol er ance s be i n [a doc um ent c o n tro ll e d u n d e r 1 0 C F R 5 0.5 9].T he Fr equenc y i s ba sed upon t he as sum pt i on of an 18 m ont h ca l i br at i on in te rv a l fo r th e d e te rm in a tio n o f th e m a g n itu d e o f e q u ip m e n t d rif t.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-42 R ev. 3.0, 03/31/04 BAS ES SU R VE I LLAN C E R EQ U I R EM EN T S (cont i nued)T he Sur v ei l l ance i s m odi f i ed by a Not e t o i ndi cat e t hat t he neut r on d e te c to rs a re e x c l u d e d fro m C H A N N E L C A L IB R A T IO N b e c a u s e th e y a re pass i v e dev i ces wi t h m i ni m al dr i f t and be caus e of t he di f f i cul t y of s i m u l a ti n g a m e a n i n g fu l s i g n a l. S l o w c h a n g e s i n d e te c to r s e n s i ti v i ty a re com pens at ed f or by per f or m i ng t he dai l y cal or i m et r i c c al i br at i on (S R 3.3.1.2) a n d th e m o n th l y l i n e a r s u b c h a n n e l g a i n c h e c k (S R 3.3.1.3).S R 3.3.1.9 T hi s S R ensu r es t hat t he R P S R E S P O N S E T I M E S ar e ver i f i ed t o be l ess th a n o r e q u a l to th e m a x im u m v a lu e s a s s u m e d in th e s a f e ty a n a ly s is. In d iv id u a l c o m p o n e n t re s p o n s e tim e s a re n o t m o d e le d in th e a n a ly s e s. T he anal y ses m odel t he ov er al l or t ot al el apse d t i m e f r om t he poi nt at whi ch t he par am et er ex ceed s t he t r i p se t poi nt v al ue at t he s enso r t o t he poi nt at whi ch t he RT C Bs open. R espo nse t i m es a r e co nduc t ed on a n[18] m ont h ST AG G ER ED T ES T BA SI S. T hi s r esul t s i n t he i nt er v al bet we en su ccessi v e sur v ei l l ance s of a gi v en ch ann el of n x 18 m ont hs, w h e re n i s t h e n u m b e r o f c h a n n e l s i n t h e fu n c t i o n. T h e F re q u e n c y o f [18] m ont hs i s ba sed upon op er at i ng ex per i ence , whi ch h as s hown t hat r and om f ai l ur es of i nst r um ent at i on co m pon ent s causi ng se r i ous r espo nse tim e d e g ra d a tio n , b u t n o t c h a n n e l fa il u re , a re in f re q u e n t o c c u rre n c e s. Al so, r espo nse t i m es c annot be det er m i ned at power , si nce equi pm ent oper at i on i s r equi r ed. T est i ng m ay be per f or m ed i n one m easu r em ent or i n ov er l appi ng s egm ent s, wi t h v er i f i cat i on t hat al l com ponent s ar e t est ed.-----------------------------------R E V IE W E R'S N O T E-----------------------------------A p p l i c a b l e p o r t i o n s o f t h e f o l l o w i n g TS Ba s e s a r e a p p l i c a b l e t o p l a n t s a d o p t i n g C EO G T op i c a l Re po r t CE NPSD-11 67-1, " El i mi n a t i on of Pr e s s u r e S e n s or Re s po n s e T i me T e sting R e q u ire m e n ts."--------------------------------------------------------------------------------------------------R espo nse t i m e m ay be v er i f i ed by any ser i es o f seq uent i al , ov er l appi ng or t ot al cha nnel m easu r em ent s, i ncl udi ng al l ocat ed s enso r r espo nse t i m e, such t hat t he r espo nse t i m e i s v er i f i ed. A l l ocat i ons f or senso r r espo nse t i m es m ay be obt ai ned f r om r ecor ds o f t est r esul t s, v endor t est dat a, or v e n d o r e n g i n e e r i n g s p e c i f i c a t i o n s. To p i c a l Re p o r t CE NPS D-1 1 6 7-A,"E li m in a tio n o f P re s s u re S e n s o r R e s p o n s e T im e T e s tin g R e q u ire m e n ts ," (R ef. 11) pr ov i des t he bas i s an d m et hodol ogy f or usi ng al l ocat ed s enso r r espo nse t i m es i n t he ov er al l v er i f i cat i on of t he c hannel r espo nse t i m e f or s p e c i f i c s e n s o r s i d e n t i f i e d i n t h e To p i c a l R e p o r t. R e s p o n s e t i me v er i f i cat i on f or ot her sen sor t y pes m ust be dem onst r at ed by t est. T he al l ocat i on of sen sor r espo nse t i m es m ust be v er i f i ed pr i or t o pl aci ng a new co m ponent i n oper at i on and r ev er i f i ed af t er m ai nt enanc e t hat m ay adv er sel y af f ect t he s enso r r espo nse t i m e.

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C EO G ST S B 3.3.1-43 R ev. 3.0, 03/31/04 BAS ES SU R VE I LLAN C E R EQ U I R EM EN T S (cont i nued)A N ot e i s ad ded t o i ndi cat e t hat t he neut r on det ect or s ar e ex cl uded f r om R P S R E S P O N S E T IM E te s tin g b e c a u s e th e y a re p a s s iv e d e v ic e s w ith m i ni m al dr i f t and be caus e of t he di f f i cul t y of si m ul at i ng a m eani ngf ul si gnal. Sl ow cha nges i n det ect or sen si t i v i t y ar e co m pens at ed f or by p e rfo rm i n g th e d a i l y c a l o ri m e tri c c a l i b ra ti o n (S R 3.3.1.2).R EF ER EN C ES 1.

R egul at or y G ui de 1.105, R ev i si on 3, " Set poi nt s f or Saf et y-R el at ed In s tru m e n ta tio n."2.

10 CF R 50, Appendi x A, G D C 21.3.

10 CF R 100.4.

I EEE Standard 279-1971, April 5, 1972.

5.

F S A R , C h a p te r [1 4].6.

10 CF R 50.49.7.

"P la n t P ro te c tio n S ys te m S e le c tio n o f T rip S e tp o in t V a lu e s."8.

F S A R , S e c tio n [7.2].9.

N R C S a f e ty E v a lu a tio n R e p o rt, [D a te].10.

C EN-327, Jun e 2, 1986, i ncl udi ng Suppl em ent 1, Mar ch 3 , 1989.11.

CEOG Topica l Report CE NPSD-1167-A, " Elimination of Pressure Sensor Response Time Te sting Require ments."

R PS I nst r um ent at i on - O per at i ng (Anal og)B 3.3.1 C B E O 3.G 3. 1 S-T 4S 4 R ev. 3.0, 03/31/04 BAS ES