ML19221A679
| ML19221A679 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/09/1979 |
| From: | Amy Snyder SANDIA NATIONAL LABORATORIES |
| To: | Mattson R Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19221A678 | List: |
| References | |
| NUDOCS 7905300061 | |
| Download: ML19221A679 (3) | |
Text
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4.w.s u.,
i Sardia Laboratories _
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, p._, c,m estme. N~ u.wo an n I
April 9, 1979 r
i Roger J. Mattson, Director Diviolon of Syctems Safety Of fice of truclear Reactor Regulation s
U. S.'. Nuclear Regulatory Co;taissia Three Mile Is]and Electrical G3neratien Station Harrisburg, Pennsylvania
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Lear P.oger:
N Folleving are brief bynopsos of infor:".ation' furniShea d Sandia Iahoratories personnel to NRC pe"sonnel relative to the Three Mile Island accident.
Su. :. aries furnished by the princ.ipal _
investigators are attached.
The Sandia contact for these requests ha s been D. J. McCloakey, (505)264-8970, FIS 475-8870, Bone (5 0f,) 2 81-1678.
Principal investigators may be contacted' by co=mercial (50 5) 26 4-ext. or FTS 475-ext.
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1.
ORJGEN Calculations of Core Inventory
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g Sandia Principal Investigator David E.
PAnnott
's Extension 3119
.s NRC Requester Joseph M 'hurp.hy.~ ~ ~~
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Several calculati.one were perforred with the Sandia
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version of ORICDi to determine the radionuclide
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inventory of the core and the decay heat rato as a-function of tina during operation and folleving the f
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accident.
Core input data and operating data vere
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obt=h%d frer:: Li ck Mur aM.c,.. CMPA, - N..C, and Cack Crooks, MIPC, NRC.
Ceeputer printouts have peen furnished to Joe Murphy.
2 Vulnerability of Cc=ponents to Radiation and Sux.ergenc e
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$andia Principal Investiga tor s Bob L. Gregory
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Extension 1912 Mn;,::on Lloyd L.
166 0
Extension 1912 a
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,, ' Charles F. Hiller
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79053000Q
In f ormation an d ecapon e.n t acht-2.aties were ebtained rela-tive to the vulnerability of the Foxboro Mcdol EllGH Pressure Transmitter and the B.iley Differential Proscure Transmitter Type SY to 107 rada and submargonco conditions.
Inforation obtained was phoned to Charlos Millor,_and Red Satterfield on April 3, 1979 ( s c o repo rt) '..
1 Hydrogen Burning / Explosion Potential Sandin Principal Investigator Nnnis B.
FJyes Extension 3449 NRC Reques ter a Saul Levine Joseph A. Morphy Mark A. Cunningham Literature aurveys varo :. ado of the limits of f1m*111ty and deton&bilit.y for hydrogen and orfgen mixtures at 1000 pai and 280CP.
Consideration was givcin to experirontal efforts that could obtain thia informatien on a rapid time-Scale.
Thece efforts voro halted since adequate data van obtained by NEC (Saul Levine) frca KAPL.
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Simple analytic calculations were made to determine ths thermal and pressure loading produced by burning or deto-nation of a 1500 cu ft gas bubble of hydresen and oxygen initially at 1000 pai and 2800F.
Constant volume equili-brium conditions were assumed.
Estimates, b.aaed on ideal gas detonation thoory, were made of peak dotonation pressures and ref'ect.ed pressures, ono-dinensional calcu-lations vero cade with the CSO obock-hydredynanics coda which verified these predictions and yielded a valuo of 1: pulse delivered to the structure.
Si...ple calculations were cade to predict the magnitudo of impulse required to fail the vessel at the vessel head bolts, flange, or control rod penetrations.
It was concluded that. burning of the oxygen-hydrogen mixture at the f1-bility limit would nrebably ba contained, but that the detonation at the detocability limit would likely lead to vessel f ailure.
'1W-di xansional calculations were perfomed with CSQ to
' predict the. pressure loading as a function of tina and -
vessel head location for h 200 cu f t bubble at threo dif-ferent crygon/hydrcson gas ratica.
Detailed investigation of the structural responce of the vessel was not carried out' due to the decrezae in tho" bubble volunee.
4.
Hydrogen _ Solubility and Chemistry Sandia Principal Investigatora ' R. ' Glen' ],ehler
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Extension 7520 i
Ruth E.
Whan Extension 8904 166 33f
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Data vaa provided on hydrogna solubility and dergasifica-I --
tion times.
Tho generation of Ug due to radiolysis ' as considorod nogligible.
Information uw provided on Sr-E2 and Zr-H O reactions,. Msed..on TG.C estimatea of" --- -
2 the H2 inventory, about 36 percent of the zirconium- '
reacted with water.
A recm *ndation vaa e.sde again.3t adding R2 2 to the reactor ecolant water to reducs I!2 0
concentration.
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Sincerely,
.y
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w A. M:n. Snyder
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Director Nuclear Fuel Cycle Programn --
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banaa L@oetones ~
u.... n n s April 4, 1979 Mr. Joseph Murphy Prol;abilistic Analyala Staf f office of Nuclear Regulatory Research U.
S.
Nuclear Regulatory Corraission Mauhington, CC 20555 TMar Joe:
I vcul ike to st=marize the assumptions made in the SANDIA-ORIGEN 1 calculationa delivered tc-day via Dave Ericson.
Tha operating history of Tnree Mile Island-Unit 2 was basod' on data supplied by Dick Muranha and Jack Crocks of NRC (phonet 492-7735).
The now fuel composition" L: c.s follown:
Uranit=1 - 2.66 v/o nominal enrichment:
S U
0.03 w/o 235 0
2.66 236 U
0.29 U
97.02 CladdLng:
kg/M':U Zircaloy 4 281.1 S5-309 21.67 Inconel 11.92 Core Sizes 73.0 MTU*
b Licensed Povor 2772 Mh7 ther7ul Tho rea a7: operaEing history la su==arized in Table 1.
The coltran labeled "Cunulative dcys" corresponds to the time -
cteps u od in the first and second burnup phases in the code runs.
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DUPLICATE DOCUMENT
'ccre size has been revised to cccputer output was eent by F4 Entire document previously entered en April 9, 1979..
into system under:
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790s % s
^No 79 0 314 0032.
No. of pages:
k
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