05000368/LER-1980-062-03, /03L-0:on 800801:during Startup Test Procedures Review for RCS Calorimetric Flow Rate Test,Power Uncertainty Bias Terms in Core Protection Calculators Revealed Calibr Tolerance Less Constant than Tech Spec Requirements

From kanterella
(Redirected from ML19344F428)
Jump to navigation Jump to search
/03L-0:on 800801:during Startup Test Procedures Review for RCS Calorimetric Flow Rate Test,Power Uncertainty Bias Terms in Core Protection Calculators Revealed Calibr Tolerance Less Constant than Tech Spec Requirements
ML19344F428
Person / Time
Site: Arkansas Nuclear Entergy icon.png
Issue date: 09/09/1980
From: Shively C
ARKANSAS POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19344F424 List:
References
LER-80-062-03L, LER-80-62-3L, NUDOCS 8009150261
Download: ML19344F428 (1)


LER-1980-062, /03L-0:on 800801:during Startup Test Procedures Review for RCS Calorimetric Flow Rate Test,Power Uncertainty Bias Terms in Core Protection Calculators Revealed Calibr Tolerance Less Constant than Tech Spec Requirements
Event date:
Report date:
3681980062R03 - NRC Website

text

r-..-

.;(g i -

'%_p.

, 7 '.

NRC F ORM 366 -

U 5 NUCLf AR Rf GUL ATO'tY COuuicsON

- 8 (7 771 LICENSEE EVENT REPORT EXHIBIT A -

CONTROL BLOCK: l - l 'l 1 l l]h (PLE ASE PRINT OR TYPE ALL RE QUIRf D INFORM Af tONI 8

6 W l A l RI Al N l 012 l@%l 0101-10 l 0!0 l 0l 0l-l 0l 0 l@[4 l 1 1 l 1 l1 l@l l lg 1

7 4

b.

. LsCEN1(E CQD(

I4 (4CEN$i N,,VSLR OS 26 L eC(NSE I V,f Ju b7 CAI du CON'T A

= LL_)@l015101010l 3 l6 18 l@l018 I 01118 -10 l@l0 l 910191810 l@

I 8

60 Et

. DOCKET hUMBER 66 M.

. EVENT DATE 14

.h REPORT DAT E

    • G EVENT DESCRIPTION AND PAOBABLE CONSECUCNCES h IWhi'le reviewing the.startup testing procedure for the RCS calori... tric floy Ioi2 10: 21 trate test, a study of the basis for the power uncertainty bias tems in the i

nrr71 i ore Protection Calculators

.PC) revealed that a calibration tolerance of C

i t o isi 10.2% power was assumed'b'etween the CPC neutron power &

power compared i io is i Iwith secondary calorimetric power level. This allowed CPC power uncertain,ty Lo LU lbias terms ~ to be less conservative than that established by T.S. Table 4 3;-l l o u l INote '(2), but' did not prevent the fulfillment of' the CPC functional requirements.

i

.Ho simi la,r,gccurr,eges. R,egortaole per T.5. 6.9-h9.o.

c s;mi, cc:s ceci sv. coot m n~isfeco, II A IO @@ 'l C l@ (I l N J Sl T lR l U g, mg g

M i

i O

  • lea,no hest-Ian y'..

PEP a T *-0 e

r s27; I,8101

[=j [0 1 6, 2; g

io l 3 ;

g g

~ '

='

2-34

.6 21 28,

g 3;

^0,^S.g;',;?P, ";;t, coy Joypg;,

EN 'AY'##

c'.'A'A

$Wdn*

h@h@ h@ l[@

1 O!010@10 I

.x.s 3

p@

[N_JO LNJ@ lC l4l 91 0lg 3,

'2 CcaRECnvE ACTiOuS @ -

CAusE DESCRiPnON N:

f ilo t IThe power uncertainty bias addressable CPC constants were increased by 1.8;%

li li! Ito make the calibration constants equal the Tech. Spec. Value of 25.

i 11 171 l g

it 131 l l

li1A 1l~

i e s

$TA scQwtm CNim $T ATU$

SCC R

<,, y s. gg. gy p y 4.,

2 a LEj@ 1110l- 0@! NA
LAj@l Start up test procedure Yeview.

1

' s

'- -

  • drivir c#re~r.

NA 7.ousi c, Activer, @ "

e.3,oso,,,,uas,@

's w

.iu Asco o,..u Ass l' la i LzJ @ LZj@l.

I I NA l

",a.so~,2 o,o 'l s

'u>

1.,,i a s:.,,,,o~ @

w

.m

- 11121 1 01 Of Ol@ LZj @l' NA l

' '.insown',,J.ts-u ciumr.,s@

o. a 12 bIl 01 d Ol@lNA l

7 8 9 It 17 LC OF OR uauac io,A.ittyv U

. LLLJ LZJ@! NA.

l 7

a 9 to ~

8' PVat*CI T Y sssugo OESCR*PTION O P.M. USE. Lt.L Y

- ' E Luj@l NA -

li,;;;;;;,;,l 8o

'o -

.c, o

. NAME OF PREPARER Chris N.- Shively 501-968-2519

,E M0 0 91150.2N i