ML20005D875
| ML20005D875 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 12/07/1989 |
| From: | Clark J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | Tenbrook W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| CCF-89-601, NUDOCS 9001020129 | |
| Download: ML20005D875 (7) | |
Text
U
\\
C=
J gituun SACRAMENTO MUNICIPAL UTILITY DISTRICT O P. O. Box 15830, Sacramento CA 95852 183o,(916) 452 3211-AN ELECTRIC SYSTEM SERVING THE HEART OF CALIFORNIA CCF 89-601
. December 7, 1989 6
cN
~
v.
Nb '
'r V. S. Nuclear Regulatory Commission o
Attn: Harren Tenbrook
- fojt C"o Region V g
1450 Maria Lane, Suite 210 Halnut Creek, CA 94596
.c-Docket No. 50-312 Rancho Seco Nuclear Generating Station License No. DPR-54 RANCHO SECO COOLING T0HER BASIN SLUDGE SAMPLE L
1
Dear Mr. Tenbrook:
Enclosed is the sludge sample you requested from the cooling tower basin at Rancho Seco.
Based on gamma spectroscopy and tritium analysis performed on site (copies enclosed) the activity has been determined to be confined to natural isotopes and Cs-137 at a level of 2.058E-7 pCi/gm.
It has been determined through various studies that the average background soll Cs-137 values in the northern California area are approximately 3E-7 to SE-7 pCi/gm.
It would be expected that Cs-137 levels in the cooling tower sediment would be equivalent to or greater than these levels due to the concentrating effects of the cooling tower system.
Members of your staff with questions requiring additional information or clarification may contact Bruce Woodward at (209) 333-2935, extension 4944.
Sincerely, Jim Clark Nuclear Chemistry Manager Enclosure cc w/o enc 1: J. B. Martin, NRC, Halnut Creek A. D'Angelo, NRC, Rancho Seco Document Control Desk, Washington DC L
9001020129 891207 J
l' PDR ADOCK 05000312
\\(
P PDC DISTRICT HEADQUARTERS O 62o1 S Street, Sacramento CA 95817-1899 t
p;pNg;;,,y nnmg' 3
i
^
Vt,
g t
UAX/VMb Peak Search Report V1.5 Generated 29-NOV-1989 16:52:07-
)
.C:nfiguration
- . GAM $ DISK:ECONFIG]5651_27NOVS91330.CNP;.]
- Arc ly n e s tiy
-: PEAR V3S.3
}
D ple title
- -EAGT CIRC LAGIN TECH: RKH LCc ple:date
- 27-NOV-1909 13:30:00 Acquinttion hte : 29-NOVn1909 12:41:5S_.
/
D ple ID
.: 5651;27NOV893320; Sample quantity.: ~1099.0 GM S3mple type
- 5.01 L.
% ple geometry
- SDIL MART.1L 1
D;tector n3mo
-: TOT _5N1627 Detector geometry: SDIL_MAVI,IL El~psed live time: 0 0.1:06:40.00 Elapsed real time: 0 01:06:41.33 0.0%
I
.Stant energy 0.45
.End energy 2049.79
'O nsitivity 5.00 Gaussian 10.00 t
i
- Fk 'It Energy Area Bkgnd FWHM Channel Left Pw Cts /Sec ::Er r fit t
1 0
6 4. 2 0W'
- 50 188 0.98 328.44-123 11 1.26E-02 53.2 3
4 7 4. 0 4 f% '18S' 04 66 0.74 149.72 145 19 2.11E-02 16.6 9.41E-0.1 3'
4 77.00 6-1.1 110 78 0.87 154.04 345 19 2.76E-02 15.0
. 4 5
i 4
0 93.29TH-7W 116 125 2.70 186.60 182 9 2.91E-02 22.5 5
0-
.1R5.79 6 A t6 109 99 1.49 371.53 366 13 2.73E-02 21.6 6.
0 209.57TH 212 -34 65 1.32 419.05 416 8'O.42E-03 48.6 7
-0 238.92 #4-10176 03 1.04 477.73 475 7 4.39E-02 11.9 O' 2 96. 02 8e'lb 90 49 1 37 500.87 583 15 2.2SE-02 21.6 9
0 338.93TR-717 4'
'9 1.00 G 7 7. C 'i 674 9 1.0GE-02 30.5
]O: 0 352.10 A-14 92 34 0.79 704.10 700 9 2.29E-02 15.3 11
-0 4 77. 34 4-11T 36 13-1.06 955.30 951 9 8.99E-03 20.5 12-0 SS3.3 3 Tk 7)* C?
O 1.15 1166.10 1161 10 2,19E-02 13.8 13 0.
609. 3S /Lu-t % 8 0 -
.21 1.15 1218.16 1211 14-2.01E-02 14.6
' # 14 0
661.72 W 'd!86 24 1.41 1322.83 1317'
.12 4.GLE-07 9.5
.[
15 0'
91 'O. 0 4 TH & 51 0
1.25 1830.60 1815 12-1.27E"02 15.2
~
16 0
969.57-78 21*' 16 14 1.01 1930.05 1931 11 3.98E-03 51.D 17 0
14 60. 76 k.a/ 0 ll?
O 2.39 2919.46 2913 16 2.80E-02 10, "
r
'k
$i 4
i e
i be M,
m__.m_.-~-
w i
7 VAOVMS Huclide Identification Report V2.2 Gener ated 29-NOV-1989 16:52:35 I
GAM $DISM:ECONFIG35651 27NOVS91020.CNF;1 C oni;i su r a t i on Analyset'by
- PEAK VIS;8,PEAKErr V$1,NID V?.L Sample title
- EAST CIRC LASIN TECH:-RKH
_ Sample date
- 27-NOV-1909'13:30:00 A c q u i s i t i o r.,
date : 29-NOV-1909 12:41:55 Samp1e ID
- 5651_27NOVB91330 San ple quantity
- 1099.0 GM'
- Sample type
- iG0ll Sample gronetry
- 7501L_MARI_1L
-Detector name
- IGT_SN1627 Detector geometry: SDIL_MARI.1L El a p t.e d live time: 0 01:0G:40.00 Elapsed real time: 0 01:06:41.13 0.0%
Eriersy toler ance :
1.00-Half life ratio.:
10.00 Errors prepa9ated: No Syst.ematic Error :
0.00 %
Efficione) type
- E ru p 1 r i c s 1 Efficiencies at
- . Peak Ener9y
- Abundance lamit 75.00 Nuclide_ Line Activity Poport.
.Nuclide Type: activation Uncorrected Decay Cort 2-Sigma Nuclide Energy Area
%Abn
%Eff uti/GM uCi/GM
% Error
.7 4-2 6 ^77,59 35 10.43A O 914E--01 2.000E-07 2.442E-07 56.91 pt4 vrelk Nuclide Type: natural Uncorrected Decay Corr 2-Sigma.
Nuclide Energy Area
%Abn
%Eff uCi/GM uCi/GM
%Errer K-40 1460.01 112 10.67A 3.295E-01 1.959E-06
-1.959E-06 23.43 TH 232 238.59 175 43.00 1.679E+00 1.495E-07 1.495E-07 23.72 593.14 87
'31.10A 7.350E-01 2.353E-07 2.3S3E-07 25.69-911.20 51 27.00' 4.891E-01 2.374E-07 2.374E-07 30.30 4.70 4.655E-01
~~----
Line Not Found 964.40 968.80 15 16.30 4.634E-01 1.295E-07 1.295E-07 103.51 LNyclido Type: fission Uncorrected Decay Cort 2-519ma
- Nuclido Energy Area
%Abn
%Eff uCi/GM uCi/GM
% Error
'C S - 13 7 661.65 385 95.12A 6.524E-01 2.05BE-07 2.050E-07 10.91 e
i
[m"[M{; s ~ 3k-1l. "h h
i f4
+ 'I
>%s
$.P
_.A a
<D%
+
t
~
y ;:
q.
tcI
- s e
4 4
9
~
,s y
i.~
/h_
,@yfQ*
< y.,
a;;
M j - -
N; '
i,.+
y f.
y f%
$: 1b s4,'(p y
+i
_s[. l R' '
1 t
x
+
h
[,
MN7 s
9' an kQ lYf&Yk B.C4
~
x
- L, C.. my,&Hk7
^
)-
J' g-
'b y
,$. vk 'y;.hh w-p C ;:-
~
}
f.:p ?g \\ W
~
- f.
r-1 Y l','j 4
3 y
%7 ci
. vz b i #
s k
n j
l
.PAGE :L1 t
z N '.,
-WEDi-061DECJ1989'12:332
!r USER::~1 LID:58011H3'+!GB PRESET. TIME:'20.00-
-:W l SAMPLE REPEAT: L1 CYCLE REPEATan1 SCRsN RS232:N-
~
- "y gH# ".1 AOCsN~QCF:N RCM Yq2 PHASEiMONITOR:N ft " " ~RCM-TIME : :0.10; INT:' 2.OOf 9
! CHANNEL.1-LLar.O UL: ( 350 :.2 SIGMA: O.20-BKG SUB:-
O.00 BK'G 2SIG
.O.00: L'SR:
iOg 4
V 4CHANNELT2-LL:350!UL:1000.2 SIGMA:JO.20 BKG SUB:i
'O.00 BKG'2SIG:J-O.00 LSR:
i O'
^
j-D TA CALC:TCPM, UNKNOWN REPLICATES: :1 :
NORM FACTOR:Q l'.00000f F
.HALFmLIFE(DAYS):Ni p
_ ISAM; POS
CH l CPM:
2EIG%
TIME EL TIME; AVG'HH
! RCM% ::
UERR 4
M g,~.1N**-il..
..=1 11'.10 13.42' 20.00 20.87
-79.0 0.14-fU J 2 -.
35.10 7.55 RCMatO.'1B JO.09~~O.59, 0.08, 0.28,.0.55,.0.26, 0.07,10.08,.O.1*
11' 13.75.12.06 20.00
.41.93-78.0 1.51 iM5 h **(( 2. 12 -.
32.05' 7.90
~2!
- l
' 1 RCM 3:0.; 88 ' L 1.' 18, 0. 67',
0.42, 0.84,*****,11.66, 0.55, 1.57, 1.51; J-r b:'3
- "37.1 11.80-13.02: 26.00 63.02 92.0 1.04 7
'2:
33.05 (7.78 n
'Y.N RCM '2.60,.=0.77, 0.80,T0.74,~4.44, 1. 0 7, 1. 1 0',J O. 7 4',
1.01, 1.04 e = og7(
h
1 1
5...
t
- S:.
I.h.
7 t 4 a
m 11 Oi,cW
- m..
- ,:NQ w
n.
1
'q(a m
~
i % ;h n
c_,..s
-~
- $f /RQ ete;dERegio'rt
'Psge I L2g ;i c,m THs11ttife-
. _. Bisma i
iNueIide H91th11.f
. R a t i -o -!.
" Energy..%Abund.: J Ac t ivity... %Er r or Rejecte'dibys
- ~ RLHJ031 '
' [39'.351F:
- OLOS, 497.00MG9.50 -- <Not found:- -' Abunf j
610c331 5.60
-1 294En06 29.25'
.?
f-il L Abundances-round ='
7... ;.-
5489::
_ f.
J 7:...+. ~
.~
- 21.00-m-m Not-found'---t ecay[Abun;
~/
- JTEV134 E41J80M 68,55;
,79.44 180.89.:18.00J--- No1 found 1-
~
,z E'"
210.46 21.90 24100E+13 107.18' 377.95 121.30?---.Not fou'nd_-[
4
'435,06 18;60 -- 'Not found L-~-
461.00' 10;90 --. Not four; -
5 65. 9 9 A = 18 90 --- LN ot.f g;/nd 7
4
,14.70'-- lNot3 0. 0 0 ' -
- N c ' f'o u n d ' - ~
1
-p 742,59 1
767;20 found
-~-
% Abundarices round % 12.50~
l 3RA 526 I600,00E 0'00.
186.21-3.28 f.039E-06 43.16. Abun.
L
.241.92 7.60 -~- Not found:- -
+
(295.22
--10.c
'2.076E207: 43.21 '
351.99'_~16 JO 1.297E-07: 30.58 o
y C
G09.31A J,8 0.'-
1 635E-07
.29.25.
11338.;l [14.O_0;- - Not._found ----
-1120.29
-5.52 --- Not found ---
1764.30 14.70 --- Not-.found' -
4
% Abunddnces Fou dc 70170'-
i JIHr234;
-24.10D 0,00 07.01' 2.78 --- Not found>---
'Abun;.
4.
~
92.30 2.72 1.523E-06
~45.03 h
92.80A. 2.69 1.540E-06
'45'.03
%;Abur
,c e s' F o u n d-' z ' 66.06
- NP-239.
2.3GD 0.84-106 73 22,70
.- ;Not found --- ' Aben -
209.75 3,24 '6'240E-07 z97.18 L
f-
- 228.18 10.70)--- Not'found ---
/
= 277. 60 A ~ 14.-10 --- Not f ound --
315.88 1.59:--- N o t: found --
334.30 2.03 --- Not'found'--
A
- %-Abundancen'round'=
5.196-J' r
i =
, / -
.t
.7 i
i w
I
~i.
f$:
's
'l
,1.
.j Lt -
Q
..ngp, d
w y
-1 1
.i
.Uriid en(i f i d Energy. Lines
- Pc3e 1 -l
~-
i i'L. It Ener gy'.
Area Sk9pd. FUHM Channel Left Pw Cts /See % Err
%Cff f
t 1
- n:
1: O G4.20 50 180 0.90 128 44 123 11 1.26E-02 5^.2 1.03E400 4
=2' '4 74.04 On 66 0.74 149.72 145
'19~2.11E-02 16.6' 1.30E,00-3-
4; 77.00' 110-70 0.07 154.04 145 -19 2.76E-02 15.3-1.45B+00.
P N
3'_
O 33D.93-42 39 1.00 677.65 674 9 1.06E 02 30.5 1.24E+00-1 4
-!4
~?
.= %
1
.. {
a 3
-5 1-t
- i l
J Bq u
.k 4
,.I a
l.
f I
a 1
-1 t
I l
j 1
1 e
I i
)
h
)
i A
s LRa hmm G
myr:s;;eww eq G uy ' #ry, o f tN e l i d '. Activity Page :
4 4 -
a T' tel n u nib e r of linea-$n spectroni 17 Nu nib e r of unidentified linen 4
.Nurnbe r 'o f lines tentatively _idtentified by N1D 13 76.47%
Nuclide Type.:: setivation r
Uncor r ected Decay Corr.
Decay Corr 2-Sigma 4
Nuclide.
Hlife Decay uCi/GM uti/GM 2-Sigma Frror
% Error Flags k
W/. u oJCb3.44D.
1.026 2,300E-07 2.44TE-07 1.390E 5G.91.
Y Nuclide~ Type : natura2 Uncorrected Docuy Corr Decay Corr 2-S i g nia Nuclide.
Hlife Decay u C i / O ti uCi/GM 2-Sigma' Error
% Error Flagn M 40 1 2DE+09Y
.000 1.959E-06
- 1. 9 5 9 E --0 6 0.400E 21.43
'i TH-202 1.41E+10Y 1.000
'2.353E-07 2.352E-07 0.604E-07 2b.69 Nuclice Type : fissaan Uncor ected Decay Cort Decay Corr 2-Sigma Nuclide Hli-fe Decay uCi/GM uCi/GM 2-Sigma Error
% Error f l a g t. '
3 CS-137 30.17Y 1.000 2.050E-07~
2.050E-07' O.309E-07 18.91 l.
l 1
Keyline not. found; "h'
1 hanually accepted:
'E'
=
Hanually edited F1ags:
'K*
9 l
f
- n l
1 t
.]
1