ML20050C108

From kanterella
Jump to navigation Jump to search
Ro:During Low Power Physics Testing for Cycle 4,moderator Temp Coefficient in Hot Zero Power,Beginning of Cycle Condition Measured Greater than Required by Tech Spec. Control Rod Withdrawal Limits Established
ML20050C108
Person / Time
Site: Farley Southern Nuclear icon.png
Issue date: 03/12/1982
From: Clayton F
ALABAMA POWER CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
NUDOCS 8204080144
Download: ML20050C108 (2)


Text

y, Malling Addr:ss Alab:ma Power Company 60r ?! orth 18th Street Post Office Box 2641 thrmingham, Alabame 35291 A

felephone 205 783-6081 F. L Clayton, Jr.

G.

C;7ld!3"";g"'

s Alabama Power S

^

tte souttun doctrc system k '

March 12,1982 C'y

~ j;f- :a" ja y

Docket No. 50-348 4

Mr. J.

P.

O'Reilly o

U.

S.

Nuclear Regulatory Commission Region II Suite 3100 101 Ma rietta St reet, N.W.

Atlanta, GA 30303

Subject:

J.M. Farley Nuclea r Plant Special Report-Unit 1

Reference:

Technical Specification 3.1.1.4

Dear Mr. O'Reilly:

This report is being submitted as required by Unit 1 Technical Specification 3.1.1.4.A.3.

During the low power physics testing of Unit 1 Cycle 4,

the moderator temperature coefficient (MTC) in the hot zero power (HZP), all rods out (ARO), beginning of cycle life (BOL) condition was measured to be +.78 pcm/*F.

Technical Specification 3.1.1.4 requires the moderator temperature coefficient to be less positive that 0 4K/K F for the HPZ, AR0 xenon free condition.

In accordance with action statement 3.1.1.3.A.1, con-trol rod withdrawal limits have been established that will insure a negative MTC.

(Attachment)

A core average burnup of approximately 1500 MWD /MTU is the predicted value racuired to restore the MTC to a value of -1 pcm/ F f or the MZP, AR0, xenon free condi-tion.

This prediction includes an assumed error of 1 pcm/*F.

You rs very tmly,

Y Q v

F.

L. Cl ayt on, J r.

f%

FLC/KWM:nac gMT.,

$CKohhh12 x +%{I L

w

r..

l N

RE. ACTOR POWER (*/*,)

2AC H7R

/p */.

2p*/.

3 o*/,

mIT 1 voLUrs 1 CURVE 68 2Ac

{

j j

\\

CYCLE 4 BANK D WITHDRAWAL LIMITS VS

\\

g BORON CONCENTRATION TO INSURE A NEGATIVE MODERATOR TEMPERATURE COEFFICIENT l

' REV. 4 3/05/82 WSM/RHM

\\

\\

~

180 b

k C.O.

3 FA C

\\

\\

\\

TECilNICAL SUPERINTENDENT DATE

{

A jgg E

\\, \\ \\

\\

l

=

m4; i

!40

\\

)

(3 X

\\

k

~i

~

\\

. _\\

f 8

\\..

\\

\\

(

i l

l' N

T X

\\i

\\

\\

\\

\\

s s

s s

s t

RO.> TA'SbTO L h4IT y

..b /.

l

( TH is tuMV2 l$ REGUIMAP

\\-.

\\---

E UNriL A 4EukNUP of T'

l 12 IS00 MW Mrt).)

l f

o

. s Icoo lloo 1100 1300 1400 1500 IGOO I?Oo' I100 Mcs monoN CO NCE.NTRATI O N (ppw)

INSTR UCTIO NS:

cnoosiNs TH E cunvE. WHi H RE.FLECTS THE. CURRENT POWER Lh.VE.L (INTER PoLATlNG BETWEEN C U R V E.S, IF REQ UIR s U S E. ~l'H E ExisTIM G DAMK-D POSITION To FINb THE. C ORR E.5 P o ND ING LIMITING (MAX MU M) 150RoN CON < E NTR ATIO N.

i

.