Text

1987 Annual Rept - Primary Coolant Iodine Spikes
	ML20147E237
Person / Time
Site:	Robinson
Issue date:	02/29/1988
From:	Morgan R; CAROLINA POWER & LIGHT CO.
To:	; NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
	RNPD-88-0757, RNPD-88-757, NUDOCS 8803070007
	Download: ML20147E237 (8)
	v • d • e

p gpgg Carolina Power & Light Compt.ny ROBINSON NUCLEAR PROJECT DEPARTMENT POST OFFICE BOX 790 HARTSVILLE, SOUTH CAROLINA 29550 E 2 91989 Robinson File No 11720 Serial RNPD/88-0757 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555 H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET No. 50-261 LICENSE NO. DPR-23 1987 ANNUAL REPORT - PRIMARY COOLANT IODINE SP:KES Dear Sir As required by Plant Technical Specification 6.9.1.6.2 this submittal provides the results of specific analyses in which the primary coolant exceeded 1.0 uCi/ gram dose equivalent I-131. This occurred on one occasion during 1987 on March 17, immediately following a plant shutdown. On that occasion dose equivalent iodine rose to 1.04 E 00 pCi/ gram but was below the limit of 1.0 pCi/ gram on the sample collected just I hour 38 minutes later.

The following information is included:

(a) Reactor power history starting 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months prior to the first sample in which the limit was exceeded (in graphic and tabular format).

Enclosures 1 and 2 (b) Results of the last isotopic analysis for radiciodine performed prior to exceeding the limit, results of analysis while limit was exceeded and results of one analysis after the radioiodine activity was reduced to less than limit, including the dates and times of sampling and the radioiodine concentrations. Enclosure 3 (c) Regarding clean-up flow history starting 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months prior to the first sample in which the limit was exceeded, Reactor Coolant System (RCS) Letdown remained a constant 45 gpm for the period.

This flow was directed through demineralizers (Chemical and Volume Control System) the entire period.

(d) Craphs of the I-131, I-133 and dose equivalent iodine concentrations (uci/gm) as a function of time for the duration e,f the specific activity above the steady-state level. Enclosures 4, 5, 6

~

I 8803070007 880'229' v PDR ADOCK 05000261 h R DCD \

G L;ttcr to Stricti RNPD/88-0757

Pcg]'2 (e) The time duration when the specific activity of the primary coolant exceeded the radioiodine limit. Enclosure 3 If you have any questions regarding this submittal, please contact my staff.

Very truly yours,

'?' &

R. E. Ho an General Manager H. B'. Robinson S. E. Plant DAS/lko Enclosures cca Dr. J. N. Grace Hr. L. W. Carner

c Gf -

-Encicsur toL5aric1388-0757-

P:g]'1 cf 1 ENCLOSUREL1 REACTOR POWER HISTORY (48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months prior to sample)

(Average of 4.NIS Power Rang 2 Channels - % Power)

Hour' March'15 March 16 March 17 0100 83.9 82.9 25~.5 0200 83.9 82.5 20.5 0300 83.9 81.5 1, 5 0400 83.9 80.5 0.0

.0500 83.9 79.5 0.0

'0600' 83.9 78.5 0.0 0700 83.9 77.5 -0.0 0800 83.9 77.0 0.0 0900- 83.9 76.8- 0.0 1000 83.8 76.8 0.0 1100, 84.0 76.8' O.0 1200 83.8 77.0 0.0 1300 83.8 77.0 0.0' 1400 83.7 77.0 0.0 1500 83.7 77.0 0.0 1600 83.6 77.0 0.0 1700 83.6 77.0 0.0-1800 83.6 77.0 0.0 1900 83.7 77.1 0.0 2000 83.6 74.1 0.0 2100 83.5 64.2 0.0 2200 83.5 53.9 0.0 2300 83.4 45.0 0.0 2400 83.3 32.3 0.0 t _

P 3

REACTOR POWER HISTORY v.. - .- AVERAGE OF 4 NIS POWER RANGE CHANNELS 100 90 1 : ::::: :: m:::::::::::: y 8

N=======m __

70 i n 60-a v

I 6 50 -

it

~R O

s' S 40 30 ,

s

,- 2o u .--

tp' u- 7 ,. '.

"l 10 ,

C4 M

p. O iii i3iiii: iiii 3iii3i i;i,ii3i iiiiii;ii;ii i$';:;:;;:;:;:;:;:;:;:;;:;:;:;:;;:;:;:;r;I 3~ 3/15/87; 3/1s/87 3/17/87 00 e it. -- '0100 - 2400 HOURS PER DAY D % REACTOR POWER

,4

-1 ,' M75 f ~

4ip f@i.p?:fi:1 jf T ^ ~ ~

~.Enclo:uro 3:tc Sarisit:RNPD/88-0757.- 4 -

'u

]

E jf'~ T*MPaga,1Xof,1- oI ..

3

, g WV w L -

i , f, -

f ;;.y l ; 1 , ,;-U

) - s .,y _ - >

j ,H:Q

+

ENCLOSURE'3-4

p );/' ~RCS' IODINE ~

SUMMARY

MARCH-1987-m+ g t

]- -

r

.[ 4

DATE < . ' j , ' SAMP1-fh i'IME REACTOR POWER (%)' . IODINE- 131' ' IODINE-133 ,I,0 DINE 131 DE' '

4 .. .. _

t .

. 03/13/87- . , . . -1005- 84 3.86E-03 6.09E-03 -6.37E 03/14/87J // ' '~-0418 '84'

. 4.80603' 6.11E-03: 7.34E 03/15/87 1146 84 4.29E-03. 6.53E-03 7.03E-03!

.03/16/87 '0821- 'p 7Is {, '5.11E-03 7.08E-03 7.86E '03/17/87 0031- 26 '

1.51Ff 2 ' 1.13E-02 1.73E-02 ,

' 03/17/87 0252 0 ;",47E-01 4.52E-01: 17.00E-01 03/17/87 :0442- 0 8.32E-01 6.63E-01' 1.04E 0(>

03/17/87. l0620 0 7.70E-01 .5.82E-01 ' 9. 55E-01*

-.03/17/87 0732 0- 7.68E-01 5~.68E-01 9.'?E-01.

03/17/877 1035 -Of j 6.67E-01 4.46E-01 8.04E 03/18/8',1 0120- 0 2.02E-01 8. 62E- 02 :2.29E '03/19/6 0220 0- 4.74E-02 9.77E-03. 5.26E-02 03/20/8/' :0250! 0 1.21E-02 1.32E-03 1.42E-02 03/21/87. 0304 29 6.23E-03 5.82E-04 7.02E-03 03/21/87 0802 5.53E-03

/ .8.29E-03 p '31.5 2.67E-03 03/22/87. 0240 49 2.58E-03 2. 77E -03 3.87E-03 7 ,

., - - *The time duration when:the specific activity of the primary coolanr exceeded the radiciodinelimitfwas1Ets,tpan98 minutes. -

'/f I'

, i 1

'. 3 / ,

, .I

[

)\ ,

1 -

(-

I

/

i h

1 1

f'

~

Enclosure4 to' Serial: RNPD/83-0757 l Page 1 of 1 1 o, X l

i. X l

s

/ X 9 X

- X

. X X

/

X O

O

,s /

(f) t M

g ' 4-3 O z

N'l O

~7 W

w 2 R

.. O u-3

}- J' y

m N

.1

.s, /./ '[f)

_7 c) W /, 2 O

>-~ ]+- 1

/ . f- __ __-

~a D

O ~

d LO g

's1 3 N, 2 M D I l

s m- v' a i y s1 7 IN Dx A O

4 O m- g.

llp w CD Q

w 3) l l

Ca ><

') N l I) X

! p -

X

! < Lo X 1 O n- y n

A X l

s

! N) N l

tv Q

A) s.

3 h.s 1 I i e i 4 4 i i i X

x X-cc, .1 l - m u a m m y e o -

O O O O n-* .O .O . . .O . O. O. O. O y, O O O O O O O O O

A O O

.!. X SYSTEM STRTUS X 1

l

Enclosute a to Serial: RNPD/88-1757 I' age 1 of 1 0 X X

<R-in X-cmm,-

M I131RCT >~

CE.

crj m X .

m m m m X

to a o o o o" X I, ,,,,,,d , , ,,,,,,A,,,,,,,,d , , , ,,,,,i y

x

$ X X

-_ X X

h X

O CD a co- -

3 O N

es O

O 2 M

~

Z Er3

.. O u-2 w -

(f)

N # c cn ')

~a

/,/. ~Z co 2 U z 3

g -

+-

,__ _ . / ' Y __#

I 7

s en g

=

u) /f 2

s

- /, z

>< J m- / I

~, cf x 2

sa o

oa /o I L1 $. / u N

3 n> e-o cr

/ CD

-: 00 O, o N r / X l X

$ u~) / X

07) 'i -

/ X

.. ? x

.v X N X

." N

/

X O

c) d -

to u a

on m y co o -

X

P P P P P P P P P 8 X

~

g o o o o e o o o o .

, X

X SYSTEt1 STRTUS X

I . . ,

EO!E e ai, -!; E3g?E E% ~T-

' o '

X L

b X

VG , X 6E . ORg X LN 2 x X UD E 3 1 1 S

1 0 0 0 0' X

~_ i =2 - - : i _ - - :

X X

c X

X X

X 1,

._ X X

c .

R C

S 2, 1 D

A .

0 T

E c 0 N : ]

e 1

N - N

D 3, E R

f .

N S 5

. Z \

1, U 8 E \ \ M 2 R M x O \

1 4,

?

\ .

A R

51 I,li 0, I S

Y 3 g M / \

M A

X 1

3

\g A 5,

/ R 8

7 ' C 6

H

. x 6 x \ 1 3

D 6,

\ 9 x R c\

1 Y 8 0_ i q 7 9 X X

A V

E I

S 3

7, N

N'\ X X

X 2

/

N X 1

4 2

/

8 7

/N - -

i X

X 8

7 2 3 5 6 7 s 9 X -

x 1

0 0 0 3

0 0 0 0 o 0

1 0

0 X .

X 1

0 0 o 0 o 0 0 0 o 0 . _

0

, X _

ygoz haC X

ML20147E237

Text

SUMMARY

Navigation menu

Search