ML13107A053

From kanterella
Jump to navigation Jump to search

Pre-Submittal Meeting MSIV Actuators Slides
ML13107A053
Person / Time
Site: Byron, Braidwood  Constellation icon.png
Issue date: 04/23/2013
From:
Exelon Generation Co
To:
Plant Licensing Branch III
Joel Wiebe, NRR/DORL 415-6606
References
Download: ML13107A053 (18)
v • d • e


Text

IIal I

I I

ct elan Gene tio pa y, LLC Byro ril 3, 1

Exelon Generati

o o

"'C 0....,

1 w

£1

Backgrou

.~_~___,_.____

~__,_.~_.,__"___

_~__ '_~_'~""~_~_____________"""'_"__ ~~_~_____~_~_.w..."*,.'.....__,_____ __,,_.

~

er 1

, I t

(

)

m I ne NRC interp results i cia 9

V one r trai I

rabl It I he exi Seetio Valves (MSIVs),"

oletion of 8 h I MSI e to I

pe bl tor train i w

th safety,

ca t

conditi

  • I'\\Jew C S, Req Ion,

mpleti imes for inoperabl atar

( ) re 0 Dosed

'
0 Exelon

cl 1\\1I****d \\I H\\Jfl r':ll II I,.. U I an II nd SIV Hydraul Actu rSystem rat n

~..

___ ~"""-........ ",,,_~

,,0~

Ii r

e rovi rapl r

as I t an n ant a r n

ator is pable perto ing its fa u

fun with eron two train ctuator I

I powe glne Safety eatu (ES )

IVISI a

a inde de t tio signal

  • An a nnel r

on m

uatio rela at provide in uts to val r train

SIV Hydraul Actuator System Configuration

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

ESF Div 2 MSlV 150 Signal r-----

ESF Div 1 MSIV lso~ation Signal I,

DC ESf power l'

I raulic Actuator DC ESF Power 2

S.tandbv Active Act uator c=--~> Actuator Tra~n (Typical of each MSIV)

  • Each actuator train contains fully redundant and independent skid mounted components Exelon

Overview of Proposed license endment Request pee I

t 519 r

r

~ t:HJI TS n 3.7.2.

ain Stea latio

(

IVs):

In rpo MSIVa r trai e Lim ndition r

ratio (

) and p e assocI.

Condition nd Requi d Actions to add Inope ble MSIV actuator ise SR,..2 to i n

that MSI actuator trai are to be tested

'th t e S ExeLon

Overview of Proposed License endment Request

__ "~____

,"_~"_'M_"""~

~-~-~~'~,-,-~,,--.,.

"",,""~'--~"-----'~~."~--"-"'",'---'~~-~---.

.-,--""-""--... ~..,."-"~-,-

r ing 0 clos on ema

  • Decla ' 9 an MSI I

rabl a ntering diti n )

Requi d Action )

nina SIV u to a The p posed Co on 1m r i operabl SIVactu r

train on istent with r

Ba n a hi ra of Cond n

ch that s mpl uld be inaly degra nditions Inc IV r

In conngu Inn r',c;.l nnlHI r'IT (",\\nQ no two Ea r,

actu In

="- Exelon

Overview of Proposed License Amen ment Request

____~_~,~___,_~_________,___ ~_~_e itia d

for re Ing pe r t iti Id tl i ne p DOS chan as foil

-

  • CO 3.. to include act atar trai in th LeO
  • Leo

.2 to state:"

ur MSI nd their a r

actu r trains sn I OPERAB 1

ew itions A th h E to add inopera I MSIV actuator t ins in configu ons

- Existin nditions th address ina rable MSIVs a relabel becam n ions F rough I Exelon

I Overview of Proposed License Amendment Request II r trai r

act J

'. In s

e r

an no nrnposed

  • Condition A: on

- P ed mpl on II asea n I e

nSI ney oth r TS rabl for a ingle ired on Id re th i operabl actu r trai Ti design

unaancy,

, ana low pro r re

  • n ble ility a desl basis ccid ng du IS pen ble for diffe en of two M IVs)

SIVaetu I

r are

,In m

SF divi ion.

s Exelon act r trai re one ator in to

/I Overview of Proposed License Amendment Request

-~------.~----.--".-...-"-~~,~--

11/1:

(

1 u

r trai Conditio

two MSI ator trai Ino ra I r diffe MSIVs a Ino ra ctuator t a

both i t e ame ESF di Prop Requi waul restorin one actu I to 0 statu in 24 nou ro ompletlo IS perm to ining OPE ator In on dema I.nn IQTOnT \\AlITn I

~nnrllnnn (... nT 4,

applica to u

4.

llrr'("'d,nH~ Tnr nnn/ nno ~rTllator In on arrected n close Logic ng one actuator train to

~i¥:':

Overview of Proposed License Amendment Request

~--,-~-,~-.

  • ( nnnition D: b ctuator for ne Inope Ie posed R d Action require I iately decl n tne i operable posed Co letion Time is a ropriate I

having both ctuator trains inope I would consti te th e affected SIV incapable of losing on d d

  • C dition E: th or more M actuator t Ins InoperaDI or R

uired Actio nd Completi Time of o ditions A, B or C be m Proposed Req ired Action wo Id require i !l1ediately decla 'ng each affected MSI j operable Proposed Com letion Time i r the Condi on and Requi Actions of the inoperable MSIVs to be entered and is consistent with other TS and the fOrtllat of the Improved Sta dard Technical cations (NUREG-1431)

"
Exelon ';0'iC:clL

'"' \\.-

-~-

Overview of Proposed License Amendment Request

  • s clearly i that t SIVa r

train a tested i rd the S S

to rifyea r trai tes the r

the i alation pasi of an actual imulated a atian signal.

I CONDITION REQUIRED ACTION COMPLETION TIME A.

One MSIV actuator train inoperable.

A.1 Restore MSIV actuator train to OPERABLE status.

7 days B.

Two MSIV actuator trains inoperable on different MSIVs and in different separation groups.

B.1 Restore one MSIV actuator train to OPERABLE status.

72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> C.

Two MSIV actuator trains inoperable on different MSIVs in the same separation group.

C.1 Restore one MSIV actuator train to OPERABLE status.

24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> D.

Two MSIV actuator trains inoperable on the same MSIV.

D.1 Declare the affected MSIV inoperable.

Immediately E.

Three or more MSIV actuator trains inoperable.

OR Required Action and associated Completion Time of Condition A, B, or C not met.

E.1 Declare each affected MSIV inoperable.

Immediately

" Exelon

Relevant Precedent e

I ne N roved i11111 r lice n en t

e VI r

I stea latia Iv r t as Callaway lant, June 16, (ADAM Accession Nu r

0608101 Wolf C Generating on, Novem r 12006 (ADAM Accession ber ML 10085)

Palo Ve clear G n Station mber 1,

(ADAMS Accessl m r MLO 10505)

II I

"::'!- Exelon

PRA Input

~ PRA ided in tne Calla luation will e provlaed si ilar to d alo Verae r l:iene Pia....,

If reek Generating I

on LAR submittals e

I lll-~ not risk-i ed submittal o

PRA evaluatio Its will be for informatio nl

  • PRA evaluation is ot used to establish the p posed Completion Times (for propose Conditions A, B, and C)l instead PRA evaluation will be performed to evaluate and bound the risk associated with the proposed Completion Times for the inoperable MSIV actuator trai
  • PRA evaluation will e used to gauge the acceptability of tne proposed Completi Times that were developed based on engineering judgment and consistency with other TS
ExeLon

PRA Input

  • p luatio rite a:

D fro latary Gui es 1.174 a 1.177 elude latary Guide 1.200 requi ments ults subnlitted as infor ation onl ill be for the foil

  • PRA evaluatio 9 risk met' L~CDF

- "LERF

- ICCDP

- ICLERP

  • PRA informatio rovided will be for the II Power Internal Events model I

.:::~:; Exelon at le)[!

PRA Input xte I

MSI nerator ptures m/Feedli reaks

  • M

- Stea Ruptures Brea not sig nt contrib rat~r ts re I In t Main IFeedline to exte I

nt risk

fA C

1 0 I 1

ml

II u

enlie

~

C

.. o 1;)

Q)

s a
Retrieved from "https://kanterella.com/w/index.php?title=ML13107A053&oldid=5239125"