ML041200057
| ML041200057 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 10/02/2003 |
| From: | Entergy Operations |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| 2D12-1989, Rev 2 | |
| Download: ML041200057 (10) | |
Text
8.1.20 Record t h e " A s Found" reading on Data Sheet 1.
8.1.21 I f any s i n g l e reading i s questionable, l h e n move t h e "Forward/Revers " l e J e r t o "Rev and average the two readings, If n o t ,
- mark t h i s s t e p NIB.
Then 8.1.22 Repeat Steps 8.1.16 through 8.1.21 f o r each c e l l connection i n t h e b a t t e r y . .,&?
1 -
NOTE I The micro-ohm t e s t i s f o r t h e i n t e r c e l l s t r a p s an co~cctions I c a b l e connections need t o be measured from the b a t t e r y p o s t t o t 8.1.23 Wicro-ohm t h e i n t e r - t i e r c t e r m i n a l t o b a t t e r y termin 6.1.24 -
I f the8tAsFound11r exceeds 150 micro-o
- i n i t i a t e a Condition Then Report and n o t i f y t h Cognizant Supervisor f o r f u r t h e r i n s t r u c t i o n s ,
If n o t ,
- mark t h i s s t e p Then c a l c u l a t m n t o ver 9.2.1 clou and on i:
r i f i e r s h a l l rep average c e l l t e ten c e l l s l i s t e d o 2
8.2.3 and record be1 (K Fact Factor :
8.2.4 tion factor a (K Factor) based in Step 8 . 2 . 2 an 8.2.5 Calculate the actual discha
Independent v e r i f i e r s h a l l v e r i f y t h a t t h e load t e s t e r i s s e t up c o r r e c t l y f o r a 9 h a t t h e c u r r e n t value c a l c h a t e d i n V e r i f i c a t i o n of c a l c u l a t i o n s p e r f o Cognizant Supervisor and permis start test.
Close 2052 disconnect switch.
S t a r t the discharge t e s t .
Record t h e S t a r t time on Data Shee Attachment 3 .
Adjust and maintain c u r r e n t throu o u t t h e t e s t t o t h e c a l c u l a t e d value + 1%of s e t p Displayed Value s e t p o i n t by + 1%, t h an a d d i t i o n a l +
I I Extra d a t a may be taken and a t t a c h e d I r a t e and t h e b a t t e r y v o l t a g e should b I
I The p r i n t o u t from t h e I accompany the f o l l o w i n I
8.2.1 i n t e r v a l s esr 8.2.15 -
IF th i s c h a r g t i s stop t h a n a low voltage c e i f ,
8.2.16 -If an i n d i v i d u a l c e l l approaching 1.0 v o l t s or cells ar Then record t h e c e l l ( s ) n t h e Cognizant Supervisor t e s t c l o s e l y monitoring t h e c e l l voltage t o v t h a t no c e l l goes below - 7 5 vdc, I f not, Then mark t h i s s t e p C e l l number: Volts:
Volts :
C e l l number: Volts:
8.2.17 -
If at anytime d u r i n g t h e t e s t a e e l l ( s ) v o l t a drops below .75 vdc, Then s t o p t h e discharge Cognizant Supervisor and r e c o r and on A t t a c b e n t 3, and go t o A t I f not, Then mark t h i s s t e p Discharge Stop Time:
7 I The f i n a l readings need t o be r a p i d l y ta I v o l t a g e approaches and goes below t h e 10 I
8.2.18 Read t h e i n d i 8.2.20 Turn off t
8.2.23 De-energize load tester.
8.2.24 Unbolt remove the load t e s t c 8.2.25 Disconnect any remaining battery load t e s t s e t nitoring cables cornect 8.3 8.3.1 I n s t a l l the 800. tin Restore the battery t o senrice w i t h the help of operations.
fuses Fn 2W2 8.3.2 Close the Battery 2D52 Disco 8.3.3 Verify that the e l c t r i c a l lineup is restore the charger i s wor ing properly.
8.3.4 Record below th Charger used:
8.3.7 Record below the a f t e r IS hours f r Heasuring m d T e s t E
+
'i C a l i b r a t i o n due d a t e :
8.3.8 Place t h e charger on f l o a t a f t e r co hours of e q u a l i z i n g charge.
8.3.9 Record t 3 e v o l t Voltage 8.4 B a t t e r y Capacity C 8.4.1 I f Attachment 2 was used, Then use t h e new c a l c u l a t e d T from s t e p 15 of I f not,
-obtain T Then from Data Sheet 2 ,
IF - NOT, af c i t y a t ?'?OF = (T
INDEPENDENT VERIFIER An independent v e r i f i e r s h a l l r e p e a t t h e c a l c u l a t i o n s o r determining the c a p a c i t y of the b a t t e r y .
8.4.4 Repeat the c a l c u l a t i o n s f o r determining the c a p a c i t y of the b a t t e r y (Independent V e r i f i e r ) .
TA (minutes) 590 x 100 =
480 minutes 8.4.5 I f t h e c a p a c i t y c a l c u l t e d i s l e s s than 90%.
Then n o t i f y maintenanc engineer f o r e v a l u a t i o n ,
I f t h e c a p a c i t y is g r e a t e r than o r equal t o 90%
Then mark t h i s s t e p N/A. .
J 8.5 B a t t e r y Maintenance I -
NOTE 1 When t i g h t e n i n g t h e terminal connectors, two i n s u l a t d wrenches should be c I applying one a s counter-torque t o prevent damage t o he t e m h a l p o s t . If I checking t h e torque of a 5/16 inch s t a i n l e s s b o l t connection t h a t was not d I assembled then 125 i n / & i s t h e proper value. I f t h e conn I o r disassembled then torque t o 165 i n / l b s . Step 8.5.1 t h r I accomplished a t any time a f t e r Step 8.3.5 has been accompli I through 8.5.10 may be acco l ~ s h e da f t e r equalize charge cu I a low enough l e v e l such t h charge c u r r e n t does not a f f e c t r e s i s t a n c I readings.
8.5.1 Verify t h a t a l l 'b t t e r y connections 8.5.2 Torque value: 13
- 8.5.3 Check the rack nuts, t;e rod nuts,
~ i t tho r q u e v r e n c h e r orque wrench n
Factor K t Cell No. Temp.
1 6
12 18 7Li(
24 7%-
30 36 43 43 54 TOTAL Temp
DATA SHEET 2 Page 1 o f "
Performance Discharge l e s t B a t t e r y Bank and Cell Volta
DATA SHEET 2 Page 2 Performance Discharqe Test Battery Bank and cell-voltages Battery Bank 2012 Test E q u q : dcT-d70/
DATA SHEET 2 Page 3 of Performance Discharge T e s t Battery Bank and C e l l Voltages Battery Bank 2012 15 Haws I 16 Hours l 17 Hours l l a Hours1 ,
Performed by Date I NOTE !
1 Terminal v o l t a g e of 105 v o l t s may be reached before a hour o r % hour r e I can be taken. I n d i c a t e the number of m n u t e s p a s t the hour o r h a l f hsur I i above the column where the l a s t readrnq was t a k e n a t test mxlpletron, I 1
DATA SHEET 2 Page 4 of 4 Performance Dis charge T e s t Battery Bank and C e l l Voltages S T / r r T Bn u K u G.,pc Bank Voltage: /0 5 .
S t a r t Time: / Y Y %
l a t t e r y Bank 2012 Stop Tlme: 3343