ML19220C688
| ML19220C688 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/04/1979 |
| From: | Bennett D SANDIA NATIONAL LABORATORIES |
| To: | Jerome Murphy NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| References | |
| NUDOCS 7905140032 | |
| Download: ML19220C688 (3) | |
Text
50-320 Sandia Laboratories
~
Albuqueraue, New Mo,sa ts/11b April 4, 1979 Mr. Joseph Murphy Probabilistic Analysis Staff Office of Nuclear Regulatory Research U.
S.
Nuclear Regulatory Commission Washington, DC 20555
Dear Joe:
I would like to summarize the assumptions made in the SANDTA-ORIGEN(1) calculations delivered today via Dave Ericson.
The operating history of Three Nile Island-Unit 2 was based on data supplied by Dick Muranka and Jack Crooks of NRC (rncne:
492-7735).
Th3 new fuel composition is as follows:
Uranium - 2.66 w/o nominal enrichment:
234 U
0.03 w/o U
2.66 6
U 0.29 0
U 97.02 Cladding:
kg/MTU Zircaloy 4 281.1 SS-309 21.67 Inconel 11.92 Bl.
Core Size:
EE.0 MTU Licensed Power:
2772 MW thermal The reactor operating history is summarized in Table 1.
The column labeled "Cumula tive days " corresponds to the time steps used in the first and sclcond burnup phases in the code runs.
7905140032_
gg
Mr. Joseph Murphy April 4, 1979 The decay phames start with the radionuclide inventory at the time of reactor shutdown (corresponds to cumulative days = 186.1) and calculates the inventory at 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> intervals.
To provide long term data, I have made another run, two copies of which are enclosed.
The two burnup subcases are not printed, simply to save paper; the data would be the same as you already have.
Three decay subcases provide the inventory out to 10 days in 1 day steps, to 100 days in 10 day steps and to 1000 days in 100 day steps.
I hope this will assist in your analyses.
Please do not hesitate to call (day or night) if there is anything further you need (work:
FTS-475-3119, home:
505-298-1142).
V truly "ours, Mf Dr. _ David E.
Bennett, III Nuclear Facility Analysis Division 4414 Copy to:
4231 S.
A.
Dupree 4400 A.
W.
Snyder 4410 D.
J.
McCloskey Attn:
G.
B.
Varnado, 4414 P. S.
Also enclosed are:
2 micro-fiche copies o f the runs delivered by Ericson.
2 micro-fiche copies o f the enclosed runs
} copy of the IEC article on the soluability o f 11 in w ter.
2
References:
1.
D.
E. Bennett, SANDIA-ORIGEN Users Manual, SAND 79-0299, Sandia Laboratories, Albuquerque, NM, to be published April 1979.
99 3no co
l TADLE 1.
REACTOR OPERATING
SUMMARY
CALC.
ACTUAL LENGTH CUMULnTIVE
% POWER POWER BURNUP BURNUP
(.WD)
(. ND) piTES OF PERIOD DAYS ON/OFF (APPROX.)
, '1W )
M M
35PT 23-30 8
8 ON 30 830 6640 6902 2CT l-13 13 21 OFF 3CT 14-27 14 35 ON 71 1980 27720 27720 3CT 29 51 4
39 OFF
'!OV l-4 4
43 ON 90 2500 10000 10117
- OV 5-30 26 69 OFF 3
JEC 1-10 10 79 ON 90 2500 25000 JEC 11-21 11 90 OFF 49904
)EC 22-31 10 100 ON 90 2500 25000 I
i IAN 1-2 2
102 OFF
>1AN 3-14 12 114 ON 90 2500 30000 30436 JAN 15-31 17 131 OFF
'EB l-10 10 141 ON 92 2550 25500 1
68940
-EB 11 1
142 OFF
?EB 12-28 17 159 ON 92 2550 43350
)
'4AR l-28 27.1 186.1 ON 92 2550 69105 UNKNOWN (4 AM) 262225 MWD so
'u PJ x0
.