ML20073R106

Forwards Rev 1.01 to Sar,Response to NRC Questions,Per 910222 Request for Addl Info & List of Matl Subj to License Request

ML20073R106
Person / Time
Site:	University of Texas at Austin
Issue date:	05/24/1991
From:	Bauer T, Wehring B TEXAS, UNIV. OF, AUSTIN, TX
To:	Alexander Adams NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
Shared Package
ML20073R108	List: ML20073R106 ML20073R110
References
NUDOCS 9106050240
Download: ML20073R106 (13)

Text

,-

3

'U N DEPARTMENT OF MECll ANICAL ENGINEERING 5%%s (L C-W -

!c/it y 3G :s ,j )i.d) + THE UNIVERSITY OF TEXAS AT AUSTIN -- -

~'W- &&' Nadur Engineing Te. ding 1.dwatny

• 10100 Burnct Rul Auain, Tew 78758 (Sl2)4715787 ' FAX ($12)471-tS89 Document Control Desk May 24, 1991 U. S. Nuclear Regulatory Commission Washington, D. C. 20555

Subject:

Letter of February 22, 1991 Request for additional information Docket 50-602 Attn: Al Adams Froject Manager Nonpower Reactor, Deco:mi ssioning and Environmental Directorate Four enclosures are submitted for the docket 50-602 license as per 10CFR part 50.4 (b) 2i and 50.4 (b) 6. These enclosures supplement the license request by revision of the Safety Analysis Report and response to the U. S. NRC questions (letter of 2/22/91). The enclosures are

1) The University of Texas Safety Analysis Report, Revision 1.01 (5/91).

2) Compilation of changes to the previous SAR submittal (11/89).

3) Specific response to letter 2/22/91.

4) List of material subject to license request.

A request to extend the CPRR-123 permit for an additional 4 months (expiration date 6/31/91) has been sent by separate letter.

Sincerely, j ,s l} b"*"

Thomas L. Bauer Assistant Director Nuclear Engineering Teoching Laboratory AP PROVD):

b h.

Bernard W. Wehring, D 3ctor Nuclear Engineering Teaching Laboratory cc: G. Fonken H. Woodson K. C.ller H. C. Lott A. B. Beach, Pegion IV w/ enclosures 0 00** A <,

V 9106050240 910524 PDR ADOCK 05000602 1 n'P V

^

A PDR

\\

L_ _ _ _ _ _ _ _ _ _ _ _ - _ _

UNITED STATES OF AHERICA NUCLEAR REGULATORY COMMISSION In the Matter of (

The University of Texas &

at Austin Docket No, 5 0 - f,0 2 k

Balcones Research Center (

Nuclear Engineering Teaching (

Laboratory (NE TL) (

AFFIDAVIT Gerhard J. Fonken being duly sworn, hereby deposes and says that he is Executive Vice President and Provost, The University of Texas at Austin; that he is duly authorized to sign and file with the Nuclear Regulatory Cor. mission the correcticas to The University of Texas Safety Analysis Report (Revision 1.01, May 1991) and supplemental material for docket 50-602 and Construction Permit CPRR-123; that he is familiar with the content thereof; and that the matters set forth therein are t rue and correct to the best of his knowledge and belieZ.

/%b%0 .

Ger ~ -d J . Fonken Ex utive Vice President and Provost STATE of TEXAS $

Subscribed and sworn to before me, a Notary Public in and for the State of Texas, this 28th day of May , 19 91.

i /* ,

_t NOTARY PUBLIC in and for the' State o! Texas 1

V

. ,e '

EMCLoSURE #2 Response to Questions Letter 2/22/91

1. Chapler_3, sectica 3.L_Iacc_l-12 Wording has been revised to remove the reference to the shield st ructure and storage pits as engineering safety features.

2. Chapter 4, s e cticn_44_p agn_4-1 Add reference (#34) to Simnad Report GA-117-833, and to page 4-76.

Se:Licn. AAA The analysis of this section calculates the clad stresses of the standard element in the limiting operating conditions. Equation (2) demonstrates the relationship of the clad stress to the internal pressure. Section 4.1.2 extends the analysis to the evolution of gases by the diffusion of gases int.o and out of the fuel material. This analysis does not specifically reference the fuel follower control elements because the salient features of the analysis do not exceed any of the parameters for the standard fuel element. In fact, feature differences of the control rod design improve the margin of safety. The following conditions demonstrate this fact. (1) The dimension of the control element is slightly less (94%) than the standard element. Since the clad thickness remains the same the allowable clad st ress actually increases. (2)

Heat transfer and hydrogen diffusion rates improve with the larger surface to volume ratio. Both of these conditions improve the margin of safety. (3) The dehydride-rehydride process (section 4.1.2) and ultimately the stress on the clad is directly related to the air volume with the element. Assumptions for the amount of volume within the ends of a standard element and the amount of gas absorption available within the graphite end pieces are equally applicable to the control element. In the control elements, the proportionate space for expansion and absorption is substantially larger.

No change to the text of section 4.1.1 has been made since the design parameters of the control elements are within the parameters of the standard element as shown in Tables 4-10 and 4-11. Table 4-11 has been corrected to show the proper dimensions, l

Enciion 4.2. eags 4-47 Table 4-3 Table values previously listed at 1 MW have been recalculated for the license condition of 1.1 MW.

1

~

7 < .

~

EeC11CIL_L21.,JAgC 4-El The pulse data of table 4-7 represent nominal values of

$3 and $5 pulses and are for comparative purposes to relate the results of two pulse magnitudes. The data represent the result of measurements and in the case of a 3;-dollar pulse the results are similar to that expected for the University of Texas TRIGA. The values of Table 4-7 represent typical results at TRIGA installations similar to the University of Texas facility. However, the actual peak power is strongly dependent on the number of fuel elements within a reactor core configuration. The fuel temperature which is a safety limit is a function of the reactivity irsettion and other fuel parameters but not the peak pc'rer. For these reasons Table 4-7 represents measurements that demonstrate the pulse results for two reactivity insertions ($3, ard $5) , one case is a typical pulse, the other case exceeds the limiting design conditions. Calculations with a specific core configuration (i.e. 90 elements) for a $3.14 (2.2% Ak/k) pulse project a peak power of about 1700 MW. Note that the peak pulse _ power dependence is roughly proportional to the number of fuel elements. Thus the assumption of core-configuration (core burnup) can substantially change the projected peak power. For example, a 25%

change in peak power occurs in a 100 element versus ar.

80 element core. The fuel temperature does not vary subs **7tial'ly-with the core configuration. Section 11.1 of L. Safety Analysis Report considers pulse values up to $9, (the limiting transient rod design condition) to demonstrate that fuel element temperatures will not exceed design values or safety limits.

Section 4.3.1, page 4-53 The values of Table 4-8 are nominal values not maximum values. Analysis conditions for design limits

. demonstrate that acceptable conditions in excess of 1.5 MW are possible, page 4-44, although limits on the time at power-and availability of cooling may be necessary.

At the normal operating conditions, 1100 kW, the data of Table 4-8 represent the typical conditions of operation.

An increase of the power by 10% to the license limit of 1100 kW does not cause any parameter within the table to approach a significant limit.

Section 4.4.. pages_4-55, 4-50 51 The Figures 4-25,_26 and 27 have been replaced to show as built conditions and correct readability.

2

_a_ _ _ _ . ~

l SeCticn_3il 6.A,_P39LA _73 Maximum worth of t ransient rod is 2.B% Ak/k, maximum transient condition is 2.2% Ak/k. Wording of sectten 4.4.8.4 has been revised to distinguish the maximum design limit and the maximum insertion limit .

3. Chaptn_L_ cil n_la E132_E-la_T.tbic12 Flow areas and units corrected to show " squares".

4. Chager 6, resilcn 6.1.4.ra y r,- 12 Revisions have been made to the text to be consistent with the figure and as-built conditions.

EeCLicn 6 1 4.4._ Sage _1-12 Reference to automatic control rod and use of bank rods has been revised. The regulating control rod is the cnly automatic control rod.

5. Chapter 7 (page numbering has been revised)

SsrLicas 7 4 L 7 L2 and 7. L t (pages 15-28) have been revised and relabeled

&ccLLcn 1sA ls ED22 1-2F.t The calculations of this section, see 7.4.3, have been revised. Results demonstrate that the factor of 10 is not necessary (see page 7-28) and that the release conditions are within the release limits.

Ect ion 7,._IAGell_1rsinS:nce 1 The list of references has been corrected.

l

6. Chapter __2 Several section cf chapter have been revised to identify key detector locations. A new section 9.5 has been added to evaluate a typical detector type and identify detection criteria.

7. Chan cr_11 Scctica_lL.l 14._Sacc_ll-1 The rupture pressure of 1800 psi represents the internal gas pressure not the yield stress limit for the clad.

The clad stress is related to the internal stress by equation (32) page 11-18. At 1800 psi the clad stress is 66000 psi, which ccmpares to the rupture strength of 304 stainless steel at 400*C of 63000 psi (Fig. 11-4).

At lower temperatures the ultimate tensile strength increases slightly. In reference (2) of chapter 11 page 4-2 the rupture pressure at 138'C is 68000 psi.

3 i

l

ENCLOCUF1 #3 1

i Sutt. mary of Revisions Version 1.01 5/91 Safety Analysis Report The University of Texas at Austin 1

L Summary of Changt.g l'aE,t (prrectfoD Chapter 1 Chapter 2 pg 6, par. 3, line 2 add sentence: Eit.ima t e s o f tiz 1940 c ensus PInjrs t the 1900 AUS.tjn_ppnth lion to be 465.600m pg. 6, par. 3, line 10 change to . . .0.2 persons per 1000 square meters pg. 6, par. 3, line 12 change to ...densit 0.2 to 0.3 persons per 1000 squa. s iles pg. 20 revise site location on figure 2 12 to 12.5mm northeast Chapter 3 pg. 12, par. 5, line 68 revise wording to identify only one engineering safety feature pg. 13, par. 7, line 2 create new paragraph, add sentence:

Control patttyys for ..  ;

pg. 15, par. 2, line 10 create new paragraph revise wording and add additional sentence Chapter 4 '

pgy 1, par. 3, line 8, add sentence to provide reference to CA report by Simnad pg. 47, table 3 revise temperature references to 1,lMW pg. 4 7, table 4 revise table tcference to control rods shtml. shim?. regulating pg. 51, par. 3, revise paragraph ,

pg. 52, par.1, line 3 revise 1000kV to 1100kW pg. 55, revise Figure 4-25 pg. 56, revise Figure 4 26 pg, 58, revise Figure 4 27 l pg. 56, par. 1, line 3 revise 1DQQty to JJ00kW

! - pg. 58, par. 1, line 3 revise 1000];2- to 1100kW l pg. 61, revise location of section 4.4.5 1 <2 pg. 62, revise location of section 4.4.5.2 <1 pg. 64, section 4.4.8 revise control rods to shtml, shim 2,.,

pg. 64, par. 5. 1ine 1 revise wording to . regulating and-thim rods... 1 pg. 65, par. 1. line 1 revise wordio t o. . regulating and shim rody. >

pg. 65, table 11 delete referet :e to 3; titty rod in table pg.-67, par. 2, 11ne-3 change motion for rod from 11 to le pg. 67, par. 2, revise par. break and wording to delete previous refer ence to safrty rod e+-y-D' + e- evw e w ggw -<gy+g--cy-#6g> g-----ww=.y++-+-y , p-w g-=,vw -

"'ww'w*T*'etyp'PW-%*WW v-'tese-- 1y w**+gW-*t7-++pg-&MwirwM*g *'*t *W4+P'ftw-

2 Ente CDIstsktnu Chapter 4 cont.

p6, 73, par. 3, line 3 revise (a) to clarify, (a) and (b)

Chapter 5 pg. 1, par. 2, line 3 revise voedin6 of part (b) pg. 6 par. 1, line 3 correct eq. number to 13 pg.13, tahic 5 2 move to page 5 1.'

revise units severai places Chapter 6 pg. 12, par. 2, line 4 change C.0ETZ0:1 to AILMA0XEI pg. 12, par. 2, line 5 change 01Lindir. alar to en_indicatino pg. 12, par. 3, line 11 change the word AETEMIls to AMIQ pg. 12, par, 4, line 2 change the word 611T_036Tls to Atl.g pg. 12, par. 5, line 9 revise by deleting sentence pg. 13-, par. 1, line 2 change the word Elea!.lydlaie to MAR!ni, pg. 13, par. 1, line 5 change the word d,0RlLSRf.CI91Lsw11sh to fiODf: selection tulichts pg. 13, par. 2, line 3 change t.he word altml3 -stnin to E.anual pg. 13, par. 3, line 4 add NM1000, and Npp1000 pg. 13, par. 3, line 5 add Np1000, and Npp1000 pg. 13, par, 3, line 10 add . . U nt czner_imenisi pg. 13, par. 3, line 11 move clarification in (h) and paragraph 4 to page 6-14, revise words pg. 13, par. 3, line 12 add section (i) for watchdog timers pg. 13, par. 5, add paragraph for digital processing description pg. 14, par. 2, line 3 remove the word ... level pewer pg. 15, Figure 6-7 revise details of figure pg. 16, par. 2, lino 2 change 1000'c to ft003 pg. 16, par. 5 reword para 6raph pg.17, par.1, line 10 change translator to centrnL51&nnLnnshtls pg. 17, par. 2, add description for enclosure 4 pg. 17, par. 3, lino 1 add references I M 11 p r, . 18, par. add references 6,7,8 Chapter 7 pg, 5, par. 5, add one sentence for Figure 7-$

pg, 14, par. 3, line 1 insert . . ambient ,algspittrig_ pimm,Ie pg. 14, par. 3, line 2 insert . ,-. building is _a neg1LLXLpIcEnure difference. The dif ferential . ..

pg 15, section 7.4.1.1. renumber and relocate from 7.4.1.2 ,

pg. 19 section 7.4.1.2. revise section as per amendment j letter to previous questions, includes correction to the original submittal pg. 25, section 7.4.1.3. revise calculations pg. 26, section 7.4,1.3. revise table 72 pg. 27 section 7.4.2 revise conclusion for analysis in 7.4.1. 3 l

}

fact CMIee t12D Chapter 8 f pg. 7, section 8.1.5 add new section for experit.ent materials ,

pg. 10, section 8.2 add sections 8.2.2.1 and 8.2.2.2 for .

analysis of cobalt 60 irradiator  !

Chapter 9 pg. 9. section 9.5 add new section to present evaluation of radiation monitors Chapter 10 pg. 10 section 10.2 add section operator requalification plan replaces previous sections 10.2.1 10.2.4 delete previous section 10.2.5 information is in section 10.3.5 ,

, pg. 10 section 10.1.$ 3 revise paragraph wording pi,. 18, par. 2 and 5 change . . . Re ac t oL_CrcrinLLLtc i to_J!pelear Reactor Cornmittee pg. 10 section 10.1.5.3 revise paragraph wording Chapter 11 L pg. 1, par. 5, line 10 move 5 lines from 2 and split paragraph  ;

pg. 2, par. 1, line 1 add sentence to start of paragraph '

pg.- 5 par. 1, eq. 4 change C1 to C1 I b

I l

l l

l l

I l

u ,

1 1

e k +' e -

=,

11_Su:.-,ry oLTypocopMcal_atd bliterlal.11ung"s fact '? e rie tt. i en Chapter 1 pages 1-5 tevise paragraph i t uh' n t a t l otu.

pg, 1, par. 1, line 1 capitalire lhe pg. 1, par 1, line 4.s delete .tn and itu.e t hdwr e n _1? M a pit _19 8 pg 1, par. 1, line B delete Eale capitalize Operation pg. 1, par, 1, line 4 capitalize lhe pg. 1, par. 4, line 2 add hyphen to steady; state pg. 2 line 5 add . Lot 31cn_L31%'l pg. 2, line 8 add delete htl pg. 2, line 23 change to follower pg. 2, line 24 change to follower pg 2, line 23,24 s w a ;> lines 23 and 2r.

pg. 2, line 26,27 delete blank line pg. 3, par. 9, line 1 add a fuel.

Chapter 2 pages 1 28 revise pa ragt aph indent at inte, pg. 1, par 1, line 1,? revise wording pg. 1, par. 1, line 6 revine s li t t o Rec.1 ) _13 y pg. 1, par. 5, add 2 lines from page n pg. 6, par. 3, line 1 change sr_ta t to region pg. 6, par 3. line 9 change to . M pernotu. per 1%9 sipiare neters pg 10, par. 2, line 11,12 revise wording pg. 13, par. 5. line 4 change to drainare_ ways pg. 19,23 change paragraph break point pg. 22 change location of figure ? 14 to page 22 pg. 23 revise table 2.4 iormat pg. 24 revise format of table 25 pg. 24 change locatton of ' age from page 26 pg. 25 27 changen page locations of figures 15 16 Chapter 3 pages 1 2? revise paragraph indentations pg. 1, par. 5, move 2 lines to page 3-3

- pg. 3, par. 4, line 5 add the word 91. standard.

pg. 3, par. 1, line 11,12 revise sentence wording pg. 3, par. 1, line 3 change reference to ! 2, 3,4,3  !

pg, 3, par. 3, line i delete the word ille pg. 3, par. 5, line 9 change yen to y1.

pg. 4, par 5, lino 11 change block to blocki pg 7, par. 1, line 4 delete the word 1.he pg. 7. par. 1, line 7 delete the word a revise ent ryway t o ent ry_way pg. 7, par. 1, line 8 change Entryway to Fntry_way pg. 7, par. 1, IIne 10 delete t he word netwal pg. ?, par. 5, line 2 c h.m ge Inuchl.y to ahoot pg. 12, par. 7, line 4 a the word the

, ,n.~ . . . . - _ - . - - - . - - - ~ - - - - _ . . . - . ~ . .

c. , , ,

f. S

, nce Ce ucctinu

! Chapter 3 cont, pg. 13, par. 1, line 3 revise entryway to entry way '

j pg. 13, par. 4, line 6 ch.mge att.Ei t o inchn!c 1

pg. 16, par. 4, no. 4 add the word Mrnitents i

Chapter 4 pages 1+74 revise paragraph indentatlutis pages 1 74 revise page breah points. several places pages 1 74 revise equation formats, several places pg. 1, par 5, line 3 change designbases to design _ bases '

pg. 1, par. 6 move par, and title frorn page 2 pg. 7, par. $, line 4 sepa rat e hea t.,,t rans f e r pg. 16, par. 3, line 2,10 correct 11tu/hr fti *F pg. 16, par. 5, revin par. wording Pg. 16, par. 4, line 10 correct Btu /hr fti *F pg. 21, par. 4, line 3 change symbol Z to {

pg. 21, par. 4, line 9 add missing symbolA cy(orarv 3 47(n er 5  :

pg. 37, par. 2, line 13 change fig, referenees. 3 20,21 to 't - 20,21 '

pg. 40, equation 29 add rnissing c. 2 places

, pg. 41, par. 7, line 3,4 add missing t, 2 places i pg. 43, equation 40 add missing c, 2 places pg. 43, equation 43 ado missing c, 1 place pg, 44, par. 2, line 4 correct spelling of sopiirate pg. 47, table 3 revise table format pg. 61,62 revise paragraphs and table locations pg. 61,62 change refernces to table 4 9 to 4 10 pg. 65, table 11 revise table locatlon to this page pg. 67, sec t ion 4.4. 8. 2 change t i t le Erg. . .. t o Ettttlin ing. .

pg. 65, table 11 correct dirnension 0.20 in. (.0.031 cm) .

pg. 67, par. 6,7 combino two paragraphs into one pg. 73, par. 3, line 3 relabel (h) to (c)

Chapter 5  !

pages 1 13 reviso paragraph indentations pg. 1, par. 3, line 4 change 2d to two by thtte pg. 1, par. 7, line 4,5 move lines from pago 5 2 pg, 2 par. 5 line 6,7 move lines from page 5 3 pg. 3, capitalize W/m four places pg, 3, par, 1, line 8 change units to s'C pg. 3, par, 1, line 10 change units to *C pg. 3, par. 1, line 12 delete square in units of k pg. 3, par. 2, line 6 add space after period in sentence pg. 4, par. 1, line 11 capitalize Humber <

pg. 4, eq. 7,8,9,10,11 add commas and periods pg. 5,-par. 1, linc 1 move line from previous page pg. 5, par.1, line 5-6 add commas and periods t.o several line--

pg. 5, eq. 12,13,14,15 add commas and periods to equations pg. 5, eq. 16,17,18 add commas and periods to equations pg. 5, eq. 17,18 revise format of equation pg. 6 par. 4, lino 6 change Figure to Figures pg. 9 par. 1, line 2 change room from 1.104 to 1.104b pg 9 table 5 1 change reference from 5.1 to 5 1 .

- - -,..,--..w.-,_,-_,_-_.- - _ .-,. - . - . _ . _ _ - -

hce corntt ten Chapter 5 cont.

pg. 10, par. 2, line 6 change E13 to g;g pg. 10, par. 4, line 1 change th e to t bni pg. 10, par. 5, line 4 change Figur., to Figutts pg. 12, par. 1, line 2 change probe to probes pg. 12, par , 5, line 4.5,8 remove the word the pg. 12, par. 6, line 7 renove the word r ed Chapter o pages 1 17 revise paragraph indentations pg, 1, par. 1, line 8 add conca . vendor.

pg. 2, par. 3, line 2 i n s.e r t the word 11at delivet pg. 2, par. 3, line 5 change Figure re f e rence to 62 pg. 2, par. 5, line 10 insert umicolon in sent ence pg. 5, par. 1, line 2 change the word btm to Luc pg. 6, par. 2, line 1 insert quotation narks . "nv" pg. 6, par. 4, line 2 change t he wo rd ni t o Lor pg. 8, par. 7, mo"e paragraph from page 6 12 Chapter 7 pages 1 13 revise paragraph indentation-pg. $, par. 4, linell changes p.erls t o parn pg. 5, par. 4, line 4 remove apostrophe in i t '. s pg. 8, par. 3 move start of section 7.2.') to page 10 pg. 10, par. 2, line 5 add . inches wM e pg. 10, section 7,2.4 change demonstrate to demonstrates pg. 11, par. 1, line 4 remove apostrophe '

in it's pg. 11, par. 6, line 4 capitalize the word Mat erial pg. 12, par. 4, line 3 change conaa t o _

pg. 13, par. 4, line pg. 14, par. 1, line 3 delete the word. . fum pg. 14, par. 1, line 4 delete the word .e tuj pg. 14, par. 1, line 5 delete of the_lnithiing pg. 14, par. 1, line 9 delete the word the pg. 14, par. 1, line 9 ituiert the words .

the_re ac t or pg. 14, par. 1, line 10 delete .

of the_rearler pg. 14, par. 3, line 2 change 11 to air Chapter 8 pages 1 13 revise paragraph indentations pg. 4, par. 6, line 4-8 revise sentences for clarity pg. 4, par. 6, con.bino part (c) and (d) into (c) pg. 6, par. 1, line 11 add sentence for graphite encasement pg. 6, par. 4, line 14 revise paragraph split, reviso first sentence of par 5 Chapter 9 pages 1 22 revise ;)aragraph indenrat ionn 6

7 I

t -

E.agt C2 u tLLLUD Chapter 10 t pages 1 32 revine paragraph indentations  ;

pages 1 32 revise pagtn; breaks throughout chapt er i pg. 1, par. 1, line 4 chahCe A W HEW hy to p1 pg. 1, par. 3, line 5 change llelentstuLnfJrdatttgal 1 Entluctting to MethanicaL1DnintrI1ng DtNLIERLtL PC. 4, par. 5, line 1 remove section title (only) 10.1.2.1 revise numbers of following sections ,

pg. 6, par. 5, line 3 revise order of words pg.17, par. 5, line 2 add comma for clarity Chapter 11

• pages 1 30 revise paragraph Indentations pg. 1, par. 2, line 2-4 add periods to each line pg. 4, par. 2, line 14,17 capitalize V see, pg. 5, par. 1, eq. $ delete last 1 pg. 5, par. 1, eq. 6 delete last 1 p6 5 par. 1, e q . 8 capitalice W sec in 3 places pg. 7, par. 2 eq. 22 change equation format pg, 7, par. 3, eq. 23 change equation format pg. 7, par. 4, eq. 24 chat te equation format pg, 8, par. 4, line 3 revise last sentence into two.

pg. 10, par. 2, line 1 capitalice Chapter pg. 10, par. 5, line 2 correct misplane to midplane pg, 11, par. 3, line 2 change is to arr pg. 1$, par. 1, niove to section (c) to gage 11 pg. 15, reviso chapter pagination from page 15 on k

l

c --

Enclosure #4 List of Materialsi Docket 50-602 License Part 70tyg gnd; h quantity c;rne m uranium-235 <20% 5800 g. fuel elements uranium-235 all 20 g detectors Part 30 americium-beryllium 2 C1 reactor neutron source polonium-beryllium 6 Ci reactor neutron source califorium-252 1200 mg neutron source for experiments 2 Part 70 uranium-233 -

10 mg foils uranium-235 -

50 mg foils

_ plutonium-239 -

40 mg. foils

_ plutonium-240 - 10 mg foils plutonium-241 -

10 mg foils Part 70 uranium-235 -

10 g reference matetlels plutonium-239 -

19 reference .natorials Part 40 uranium-236 -

8 mg foils material uranium-238 - 150 g foils material Part 30 cobalt-60 10,000 Ci multiple source irradiator in reactor pool (1) Foils'and reference materials are-for use with the reactor for I

measurement and experiment purposes.

(2) The californium-252 is for urn as a reactor neutron source for

! experiment purposes. Licensing of the californium-252 is with the i Texas agreement state license.

1 I

L 5/29/91

( ..