- - ) r i d A i R Z ? O R T O N THE USE OF TXE

FOR TR,E N-REACT9R PRO13ABILISTIC RISK ASSESSMENT 14 ODU LAR - io G I C - NOM EN 2 LA TU R E A PPR 0 AC li

P r e p a r e d f o r

Los Alamos N a t i o n a l L a b o r a t o r y Los Alamos, NIVI

P r e p are d by

I n t e r n a t i o n a l Energy A s s o c i a t e s L i m i t e d 1717 L o u i s i a n a N E , S u i t e 202

Albuquerque , NM 87 I10

J u n e 1 0 , 1986

DISCLAIMER

This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsi- bility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Refer- ence herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recom- mendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

. '

ASTERV

DISCLAIMER

Portions of this document may be illegible in electronic image products. Images are produced from the best available original document.

I N T R O D U C T I O N

T h e N-Reactor 2 r o S a b i i i s t i c r i s k a s s e s s n i e n t a d z p t i o n o f t n e modular i o g i c approach f o r f a u l t t r e e model ing nas l e d t o t h e u p c k t e of t h e r i s t e r l o g i c diagram (PI-3) nomencla ture t o confo rn w i ch a s t r nde nd EO du l a r-1 o Q i c -nod e 1- n3 me nc l a t u re fo r m t . report a e s c r i b e s t h e ML3 nomencla ture sys t em and p r o v i d e s a l i s t i n g of r;he u p h t e d Ma l a b e l c o d e s , along wi th t h e o r i g i n a l codes .

T h is

-1-

. N- REACTOR M U ) NOMENCLATURE DOCUMEXTATION

Tne f o r m t t h a t was u s e d t o i n c o r p o r s t e modular - log ic-model (b<i.,X) nomencla ture i n t o tne m a s t e r l o g i c d iagram ( W B ) is con- ze?tuz. i ly c o n s i s t e n t w i t h t h e format d e v e h p e d f o r l i g h t - m c e r

r e a c t w s . I n g e n e r a i , e v e n t l a b e l s f o r t h e N-Reactor MU now f o l l o w t h e f o r m a t :

COMPIDEN-TY P-FM

w i t h a maximum s t r i n g o f 15 characters . (When n e c e s s a r y , dashes are s u p p r e s s e d i n o r d e r t o l i m i t s t r i n g l e n g t h t o 15 charac- t e rs . )

"COMPIDEN"

The f i r s t p o r t i o n o f t h e e v e n t l a b e l f o r most of t h e bas i c e v e n t s i n t h e f a u l t t r ee modular l o g i c has t h e g e n e r a l fo rm lTOMPIDEN1l. Th i s e i g h t ( 8 ) c h a r a c t e r code is used t o d e f i n e t h e system, t h e component number, and t h e e l e c t r i c a l l o a d group a s s o c i a t e d w i t h t h e component.

T h e first th ree l e t t e r s o f t h i s code , llCOM1l, are used t o d e s i g - n a t e t h e s y s t e m t o which t h e component b e l o n g s . Examples o f s u b s t i t u t i o n s t h a t car. b e made f o r t he code V O M 1 l a re shown i n T a b l e 1 . Note t h a t Table 1 a l s o i n c l u d e s s y s t e m c o d e s f rom t h e o r i g i n a l M L D .

- 2-

T h e n e x t f o u r l e t t e r s , l l P I D E 1 l , are u s e d t o d e s i g m t e t n e component number. T h i s nilrrber c a n b e e x t r a c t e d d i r e c t l y f rom t h e systerr! p i p i r , ~ ana i n s t r u m e n t a t i o n d r a w i n g s (?&IDS) or o t h e r p l a n t draw- i n g s . I n some czses , r=:r:,nyns m u s t b e u s e d t o i d e n t i f y compo- n e n t s . For example , t h e l lPIDE1l s u b s t i t u t i o n f o r D r i v e T u r b i n e Purnp 1 is l lODT1l l b e c a u s e t h e p l a n t P & I D s do n o t y i e l d a u n i q u e i d e n t i f i c a t i o n number f o r t h a t pump. T a b l e 2 is a l i s t o f c o d e s f o r IIPIDE1l ( c a l l e d l l subsys t em d e s i g n a t o r s " ) .

The l a s t l e t t e r i n the code, rtN" 9 is used t o designate the load group or t h e p o r t i o n o f t h e e l e c t r i c power s y s t e m a s s o c i a t e d w i t h t h e component. t h e l e t t e r X is u s e d t o s i g n i f y t h i s f a c t . L e t t e r s u s e d t o i d e n t i f y l o a d g r o u p s s h o u l d b e A o r B.

I f no load group is a s s o c i a t e d w i t h t h e component,

EXAMPLE, "COMPIDEN"

As a n example, llCOMPIDEN1t f o r c o n d e n s a t e and feedwater motor- o p e r a t e d v a l v e number HV4312 which is powered by l o a d group rlBll o f t h e e l e c t r i c power s y s t e m would be:

COM = CFW (see Tab le 1 ) PIDE = 4312 (component number)

N = B ( e l e c t r i c a l l o a d g roup)

COMPIDEN = CFW4312B

S i m i l a r l y , a manual v a l v e number HV4021 i n t h e same s y s t e m would have a COMPIDEN s u b s t i t u t i o n o f :

CFw4021 X

- 3-

The i d e n t i f i e r COMPIDEN d o e s no t i n d i c a t e t h e t y p e o f component , buc o n l y its s y s t e m , component number, and l o a d group. Ano the r code is i n c l u d e d i n t h e e v e n t l a b e l s t o s u p p l y component i n f o r - ma t io E.

The code , l lTY?' t , is t n e g e n e r a l form of t h e component t y p e code

a n d . it appears i n t h e e v e n t l abe ls i n c o n j u n c t i o n w i t h t h e c o d e COMPIDEN a s f o l l o w s :

COMPIDEN-TYP

"TYP" is a three-charac te r code i d e n t i f y i n g t h e c l a s s of component t h a t has f a i l e d . TFM. For some components , rrTYP*l s p e c i f i e s f a u l t i n f o r m a t i o n a s w e l l a s component c lass . o p e r a t e d v a l v e is MXX, where M i n d i c a t e s t ha t t h e component is a moto r -ope ra t ed v a l v e and XX a re d e s i g n a t o r s i n d i c a t i n g t h e normal and f a i l e d p o s i t i o n s o f t h e v a l v e . r e p r e s e n t r topenll and * l c l o s e d , l l r e s p e c t i v e l y , and are s u b s t i t u t e d a s a p p r o p r i a t e i n t h e TYP code f o r t h e d e s i g n a t o r s XX. p r e v i o u s l y d e scr i b ed a u x i l i a ry-f eedwate r-mo t o r -op e r a t e d v a l v e number HV4312 which is normal ly c l o s e d and f a i l s c l o s e d would t h u s be i d e n t i f i e d as f o l l o w s :

F o r example, t h e TYP code f o r a t r a n s f o r m e r is

T h e g e n e r i c ItTYP" code f o r a motor-

The l e t t e r s ltOtl and I T T t

The

AF W 4 3 1 2B- MCC

A l i s t of ItTYPtl c o d e s is g i v e n i n Tab le 3.

-4-

The f i n a l p o r t i o n of the event l a b e l , 1rF14ff, is a two-character CGCS :h?at i n d i c a t e s t h e f a i i u r e mode of t h e equipment . Examples o f lIFS1t codes t h z t appear i n t h e M L D bzse even ts are ttFLtt ( f a i l s ) , I I O i Y < operaLor e r r c r ) , and tV:Ftt (mechanical f a i i u r e ) . A list of rrFMft codes t h a t are used f o r M L D basic events is p r o v i d e d i n Tzble 4 .

TABLE I

rrCOM1l Codes f o r Basic Event Labe l s

UPDATED CODE

A 4 1 A 48 AH R BLC * BSS* C AE CFV* C FW CH&l C NF C PA CRH* C RW c sv* DC * DCN * DCW* DHP DLB* DMW DOS* D ST* DTL ECC ESF FCF FW 1 FW2 G I C * G SC G ST HCC HC R H P I H PP I BH I N A M SH MSS NCS* PCF* PC P PL c

SY ST EX

73.8 kV Ons i t e A2 Power 4160 v o l t O n s i t e AC Power 480 v o l t O n s i t e AC Power Af t e r Heat Removal Bottom I n s u l a t i o n Layer Coo l ing Bail S a f e t y Diesel S t a r t i n g A i r Confinement F i l t e r e d Vent Condensa te & Feedwater RC Chemical A d d i t i o n Confinement Compressed A i r C o n t r o l Room H a b i t a b i l i t y C i r c u l a t i n g R a w Water Confinement Steam Vent O n s i t e DC Power Dump Condensers Diese l Engine Cool ing Water De aera t o r Heater Pressure C o n t r o l Diesel L u b r i c a t i o n Demine ra l i zed Water Diese l F u e l S t o r a g e & Transfer Diesel S t a r t i n g D e a e r a t o r Tank L e v e l C o n t r o l Eme r g e ncy Core Coo li ng E n g i n e e r e d S a f e t y F e a t u r e s A c t u a t i o n F u e l C ladd ing F a i l u r e Detect i o n Low P r e s s u r e F i l t e r e d Water High P r e s s u r e F i l t e r e d Water GSC I n s t r . & C o n t r o l G r a p h i t e & S h i e l d Coo l ing G r a p h i t e S t r u c t u r e HCR Coo l ing H o r i z o n t a l C o n t r o l Rod High P r e s s u r e I n j e c t i o n H P I Pump C o n t r o l I n t e r b u i l d i n g Header I n s t rume n t A i r Mainstream Header Main Steam Supply Non S a f e t y C o n t r o l Pr imary C o o l a n t Flow C o n t r o l Pr imary Coo lan t P r e s s u r e C o n t r o l P r e s s u r i z e r Level Co n t r o l

OR IG INAL CODE

A C 1 4 AC 4 AC 480 Ad R LC BSS C A E CFV CF CHEM CONF C A C RH C Rd csv D C DC N DCW DH PC DLU B DW DO S DS DTLC EC C ESF A FC FD FW- I FW -2 GSC I C G SC GS HC RC HC R H P I HPIC I BH I A M SH M SS NC S PCF PC P PL

* = These a b b r e v i a t i o n s do n o t a p p e a r i n b a s i c e v e n t s .

-6 -

UPDATED CODE

3 1 4 0 2 3 PMS * PSB'f TSP R C T RGS* R SS R TR RN 1 RW2 SBF * SC A SG L S LM s PC SSE

ST L ST P svc W TG

TABLE 1 ( C o n t . ) I1COMIr Codes f o r

Basic Event Labels

SY ST EPI OR I G I N A L

CODE

13.8 kV O f f s i t e AC ,Power 230 kV O f f s i t e AC Power Pony Motor S t a r t P i a n t S e r v i c e B o i l e r s P r imary S p i l l R e a c t o r C o o l a n t Re ac t o r Gas R a w S e r v i c e Water System Reac to r T r i p Low P r e s s u r e 3aw Water High P r e s s u r e Raw Water PSB F u e l S e r v i c e A i r Steam G e n e r a t o r Level C o n t r o l Secondary Loop Makeup Secondary P r e s s u r e C o n t r o l Secondary Surge Tank Emergency

Secondary Surge Tank L e v e l C o n t r o l Secondary Surge Tank P r e s s u r e C o n t r o l C o n s t a n t S p i l l Valve C o n t r o l Chain WPPSS TG

F i .11 C o n t r o l

CACl4

PMS PS R PS RC RG R S i S R T RW S- 1 RWS-2 Si3F SA SG LC SLM s PC SSTEF

SSTLC SST PC sv c W TG

OAC 2 30

* = These a b b r e v i a t i o n s do n o t appear i n basic e v e n t s .

- 7 -

TABLE 2

l 'PIDE1l Codes f o r Basic Event Labels

( S u b s y s t e n d e s i g n a t o r c o d e s t h a t are r e q u i r e d f o r conponen t s F i thouL u n i q u e component numbers.

UPDATED C O D E

ALPX M LPX OBF X OD TX OTGX

SU BSY ST EM

A u x i l i a r y Lube Pump X Main Lube Pump X B o i l e r Feedwa te r Component X

, D r i v e T u r b i n e Component X Tu r b og en era t o r Co mp o nen t X

OR I G I N AL COD E

AUXLU B MLU B BF DT TG

TABLE 3

r l T Y P * l Codes f o r Basic Even t Labels

UPDATED CODE:

A C

H M R S X vi V v

Y! 5

ASM * AUX* BU s BXX

C BL CND CNT* COMP C TR D E A E N " DOR * DSL* EMX

HDR H TR HTX * I N H I N R LSW* LX T MCC** MISC

A i r Ope ra t ed Manual C h e c k E x p l o s i v e H y d r a u l i c Opera t ed Mo t o r Ope r a t e d Rel ief S a f e t y Ma nu a1 Valves ( General) Valves (Unkmwn Type)

O T H E R COMPONENTS

OR I G I N A L CODE

A s s e mb li e s kuxi 1 ia r y Bus C i r c u it Bre a k e r ( XX = nor mal /

f a i l e d s t a t e ) Cab le Condenser C o n t a c t s Components ( G e n e r a l ) Co n t r o 1 l e r De ae ra t o r Diesel G e n e r a t o r Do o r D i e se 1 ( w i t h o u t g e n e r a t o r ) Compressor (X: R = f a i l t o

r u n , fail t o s t a r t ) He ade r Heater He a t Exchang er In l e t Header I n l e t Riser Level Switch C r o s s t i e Motor C o n t r o l C e n t e r M i s c e l l a n e o u s

* = These a b b r e v i a t i o n s do not appea r i n b a s i c e v e n t s . ** = T h e s e a b b r e v i a t i o n s were used i n o r i g i n a l l abe l s b u t have no t been u s e d i n p r e s e n t basic e v e n t l abe l s .

-9-

A C E i-i M R S X VLVS V

A S S Y S AUX BS C B

CAB CND CONT COMP CONT DEAR DG DR D CMP

HD R H TR HX I N H D R INRIS LS X T I E MCC MISC

U PD ATE2 CS3 E

I.: ST OUR O U R P I P PM P PIG

PRI * PR Z PT B REL* RFL * SEAL SJE S PR SRG* STG * STR * Si G T FM TWK TR B V T R * ZBT*

r tTYPr l Codes f o r Basic Event L a b e l s

3 ~ i i E R COMPCINTNTS ( C o n t . )

No t o r St a r t = r Out i e t Header O u t l e t Riser P i p e P urn? Pum:, Motor ( X : R = f a i l t o

r u n , S = f a l l t o s t a r t ) P r i m e r Pre s s u r i z er P r e s s u r e Tube Re l a y R e f l e c t o r Se a1 Steam Je t A i r E j e c t o r Spray S u r g e Tank Steam G e n e r a t o r S t r a i n e r Switchgear Bus T ra 11s f o r mer Tank T u r b i n e V o t e r B a t t e r y

OR IG I N AL COD i2

MST A OUTHDR OUTRIS PP P PM

PR I PR Z PRT B RY RFLT SEAL SJAE S PR SRG S G STR SW GR TR T TRB VT BT

* = These a b b r e v i a t i o n s do n o t a p p e a r i n basic e v e n t s .

-10-

TABLE 4

trFMtt Codes f o r Basic Even t Labe l s

FAILURE MODES ( G E N E R A L ) U PD ATZD

COD E

hL ic jy, 3 R C E* CG CEI * CS” DF* E J E C T FL G D GS HDO E

HI0 E

IN L** LA LC LH LK LS LW MF MN** OE OF** ON** OUT** PR R E RN** SF** SG ** SH** SP ST** TM

R l i g r, 3 l O C k B r e zch Cal ibra te Clog Coromon Mode Clo s e a Decrease Flow F u e i E j e c t i o n F a i l u r e ( c a t c h - a l l c a t e g o r y ) G r ou nd G r a p h i t e S h r i n k s H y d r a u l i c a l l y Opera t ed Valve F a i l s Because

H y d r a u l i c a l l y Opera t ed Valve F a i l s Because

Improper Loss ( c a t c h - a l l ) Loss of A i r Loss o f Coo l ing Loss of H y d r a u i i c s L e a k Loss of S u p p o r t System Loss of Water Hardware /Mechanic a1 F a i l u r e Manual Op era t o r E r r o r O f f On O u t s i d e Confinement Power F a i l u r e t o R e s t o r e After Tes t /Main tenance Run S h i f t S i g n a l Short S p u r i o u s S t a r t Te s t /Ma i n t e nanc e

o f O E and Decreases Heat Removal

of O E and I n c r e a s e s Heat Removal

OR I G I N AL COD E

ALGN 3LK s C A L I B c LS CM 2iS DC R E J E C T F GND

IM P L A I 3 COOL HY D R LK su P WTR SllPPLY ilF M A N OE OFF O N OU T PW R TMO E R N SF T S I G SHT SPUR ST TM

* = These a b b r e v i a t i o n s do not appea r i n basic e v e n t s . ** = These a b b r e v i a t i o n s were used i n o r i g i n a l l abe l s b u t have nQt b e e n u s e d i n p r e s e n t bas i c e v e n t l abe l s .

-11-

U P D A T E D

cc CO oc 99 FO

rjoruialiy C losed , F a i i e d Ciosed Normally C l o s e d , Failed Open N o r m i l y Open, F a i l e d C l c s e d XcrmaiIjr Open, F a i l e d Open 14ormiLy P a r t i a l l y Open; O p e r a t o r F u l l y Opens

O R I G I N A i

2 C co oc 00 aOz

-12-