ML081900169

June 05000390/2008301 Exam Final Ro/Sro Written Exam References

ML081900169
Person / Time
Site:	Watts Bar
Issue date:	06/03/2008
From:	NRC/RGN-II
To:
References
Download: ML081900169 (6)

See also: IR 05000390/2008301

Text

Final Submittal

(Blue Paper)

FINAL RO/SRO WRITTEN

EXAMINATION REFERENCES

AOI*30.2

WBN FIRE SAFE SHUTDOWN Rev. 27

Pace 17 of 1291

4.5 Safe Shutdown Logic Diagram

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(1) INInATING EVENT IS AN APP ENDIX R FIRE

(2) REFER TO SECTION 4.3 FOR A COMPLETE

DESCRIP TION OF THE S Hu m OW N KEYS. THEIR

"q

f' \

FUNCTIONS AND COMPO NENTS.

(3) LEGEND FOR DIAGRAM SYMBOLS AS FOLLOW S *

DESCRIPTION OF KEY

I _~ ',"~M~'.~"'"

KEY NUM BER ,

< 3' SAFETY FUNCTION OR E.ND

STATE TO BE ATTAINED

(4) OFFSITE POW ER NOT CREDITED FOR ALTERNA W E SHUIDOW N.

(5) RCP THERMA L BARRIER COOLI NG REQUIRES SUPPORT OF

ERCW (KEY 1C) & CCS (KEY lB)

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Ba tt ery Ce l l Pa ra met ers

3 .8 .6

3 .8 ELECTRI CAL POWER SYSTEMS

3.8 .6 Ba tte r y Ce l l Pa ra meters

LCO 3. 8. 6 Batter y cell parameter s for 1 25 V v it al batter ies a n d 1 2 5 V

di esel g e ne r a tor (DG) b a t t eri es sha ll be wi t hin t he l i mi ts

o f Table 3 . 8 .6 - 1 .

APPLICABILITY: When ass ociated DC electrical p ower s u b s ys t e ms and DGs are

required t o be OPERABLE .

ACTI ONS

-- - - - - - - --- -- -- ---- - - - ----- - -- - - - -- --N OTE- - - - - -- -- - - - - - - - - - -- - - - - - - - - - - - -- -- - -

Se p a r a t e Con d i t i o n entry i s all owed f or each batter y bank.

CONDI TIO N REQUIRE D ACTION COMPLET ION TIME

A. On e o r more A.l Ve r i f y pilot cel ls I h our

batteries wi t h one electrolyte leve l and

o r more batt e r y fl oat vo l t a g e me e t

cel l parameter s n ot Table 3. 8 .6 -1

wi t h i n Ca t e go r y A Category C limits .

o r B limit s.

AND

A .2 Ve r i f y battery c el l 2 4 h ours

parameters meet

Table 3. 8 . 6-1 AND

Category C limit s.

Onc e per 7 d ays

t her e aft er

AND

A. 3 Rest ore batter y c e l l 3 1 d ays

parameters to

Ca t e go ry A and B li mit s

o f Tabl e 3 . 8.6 -1 .

(cont inued )

Wat t s Ba r -Un i t 1 3. 8- 3 3

Battery Cell Parameters

3.8 .6

ACTIONS (c ontinued)

CONDITION REQUIRED ACTION COMPLETION TIME

B. Required Actio n B.1 Declare ass ociated Immediately

and associated battery in operable.

Completi on Time of

Condition A n ot

met .

OR

One o r more

batteries with

average

electrolyte

temperature of the

representative

cells < 60°F for

vital batteries

and < 50°F for DG

batteries.

OR

One o r more

batteries with one

o r more battery

cell parameters

not within

Category C values.

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3 .8 . 6 . 1 Verify battery cell parameters meet 7 days

Table 3 .8 .6 -1 Categor y A limits .

(co n t i n u e d )

Wa tt s Bar -Un it 1 3 .8-34

Batter y Cel l Pa r ame t e rs

3 .8 . 6

SURVEILLANCE REQUIREMENTS (co n t inu e d )

SURVEI LLANC E FREQUENCY

SR 3 .8 . 6.2 Ve r i fy batte ry c e l l parameters meet 92 da y s

Tab le 3 . 8 .6 - 1 Ca t e go ry B limits .

AND

Onc e within

2 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> after a

batt e r y

dis charge

< 11 0 V for

v i t a l batteri e s

(113.5 V f or

vital battery V)

or 106 .5 V f or

DG batterie s

AND

Onc e within

2 4 hou r s after a

battery

overcharge

> 150 V f or

v i t a l batter i es

(155 V f or vi t a l

batter y V) o r

145 V f or DG

batteries

SR 3.8.6.3 Verify average ele ctrolyte temperatu re 92 days

o f representati ve cells is ~ 60°F f or

vital batteries and ~ 50° F for the DG

batteries .

Watt s Bar - Uni t 1 3 .8 -3 5

Battery Cell Parameters

3 .8 .6

Table 3 .8 .6 - 1 (page 1 o f 1)

Bat tery Cell Parame te rs Requ irements

CATEGORY A: CATEGORY B: CATEGORY C :

PARAMETER LI MIT S FOR EACH LI MITS FOR EACH ALLOWABLE LIMIT

DES IGNATED PILOT CONNECTED CELL FOR EACH

CELL CONNECTED CELL

Electrolyte Level > Min i mum level > Minimum level Above top of

i nd i c a t i o n mark , indicat ion mark , plates, a nd n ot

and $ 1 / 4 i n c h and ~ 1 /4 i n c h o v er f l o wi ng

a b o v e maximum above ma x i mum

le ve l ind icat ion level indicati on

mark (a ) ma r k (a )

F loa t Vol t age ~ 2 . 13 V ~ 2 . 13 V > 2 . 07 V

Spec if ic Gr av i ty ~ 1. 2 0 0 ~ 1.195 Not mo r e than

(b ) ( c) 0 .020 bel ow

-AND- a v er a ge of all

c on nected cell s

Aver age o f all

co n ne cted cells AND

> 1.205

- -

Average o f a ll

c o n n e c t e d cells

~ 1 .1 9 5

(a ) I t is ac cep ta ble f or the elec trolyte level t o t emp o r a r i l y increase abo ve

the s pecif ie d maximum le vel during equal i zing charges prov ided i t i s no t

over flo wing.

(b) Co rrec ted f or elec troly te t e mpe r a t u r e and level . Level co r r ec t io n is

not r equi re d , ho wever , wh en b a tt e r y c h a r g i ng i s < 2 a mps wh e n o n float

charge f or v it al b atteries and < 1 . 0 amp f or DG batteries.

(c l A battery c h a r g i ng cu rren t o f < 2 a mps wh e n on f l oat charge f o r v i t a l

batte ries and < 1 . 0 a mp f o r DG b a tt e r i e s is ac cept a ble f o r meeting

s pecific gr avity li mi ts fo llowing a ba ttery rech arge , f or a maximum o f

31 days . When cha rging current is u s e d t o satis fy s p e c i f ic gra vit y

requ irement s , speci f ic g ravity of each co n ne c t e d cel l s h a l l be mea s ur ed

p r i or t o e xp i ration o f the 31 day a l l owa n c e .

Wa t t s Bar -U nit 1 3 . 8- 36

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