ML20083P535

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Test Rept:Tensile Properties of Facility Fuel Element 1-2415
ML20083P535
Person / Time
Site: Fort Saint Vrain Xcel Energy icon.png
Issue date: 09/23/1983
From: Price R
GENERAL ATOMICS (FORMERLY GA TECHNOLOGIES, INC./GENER
To:
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ML20083P530 List:
References
907057, NUDOCS 8404200060
Download: ML20083P535 (21)
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i< s tn ev. ices 23 FsV80-2221 A ISSUE

SUMMARY

l TITLE TEST REPORT: TENSILE PROPERTIES OF FORT O R & D APPROVAL LEVEL 2 ST. VRAIN FUEL ELEMENT 1-2415 El DV & S O DESIGN DISCIPLINE SYSTEM DDC. TYPE PROJECT DOCUMENT NO.

  • N 18 RTE 7400 907057 ISSUE N0/LTR. A QUALITY ASSURANCE LEVEL SAFETY CLASSIFICATION SEISMIC CATEGORY ELECTRICAL CLASSIFICATION I SC-1 CAT-I N/A APPROVAL PREP ^" DESCRIPTION /

ISSUE DATE FUNDING APPLICABLE BY ENGINEERING QA CWBS NO.

g PROJECT PROJECT A R.J. G.B. D.S. Initial Release SEP SI N Price Engle Brus 7415020206.

e.nu e.a.uc f 9/9/u > PE p) gy/J siNn CONTIN'UE ON GA FORM 14851 NEXT INDENTUR ED DOCUMENTS

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906770 ROR-CONTROLLED COPY VERIFY ISSUE STATUS WITH DOCUMENT CONTROL Fato" " "

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GA Techn Irgies Inc.

G A-1484 (REV.10/82)

, TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No. I*'

907057 A TARLE OF CONTENTS Page

1. INTRODUCTION------------------------------------ 4 E 2. MATERIAL---------------------------------------- 4 5

o, j 2.1 Unirradiated Companion Material------------ 4 j 2.2 Irradiatta Material------------------------ 4

@ 3. T ES T ME TH O D ------------------------------------ 5 5

e 4. RESULTS- ------------------------------------- 5 i!

8 4.1 Unirradiated Specimens--------------------- 5

,j 4.2 Irradiated Specimens----------------------- 5

?

5.

SUMMARY

AND CONCLUSIONS------------------------- 6 E

o 3 6. RE F E REN CES ------------------------------------- 6

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TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document N '

907057 A I I

LIST OF TABLES

1. Test Specimens Machined from Fuel Element 1-2415--- 7
2. Tensile Properties of Unirradiated B-327 Graphite-- 8
3. Tensile Properties of Irradiated B-327 Graphite---- 10 i 4. Tensile Properties of Coupon Specimens from Fort E

St. Vrain Fuel Element 1-2415 (B-327 graphite)----- 16

$ t a

I a

h LIST OF FIGURES 5

5m 1. Sectioning of FSV S/N: 1-2415---------------------- 17

$ 2a. Coring Plan - Faces A, B, and C'-------------------- 18 e

,5 2b. Coring Plan - Faces D, E, and F--

E

19

$ 3. Tensile Strength of Graphite f rom Fuel Element

,s 1-2415 f or Each Face of the Block------------------

s 20 5 4. Young's Modulus of Graphite from Fuel Element E l-2415 for Each Face of the Block --------------- 21

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GA Techn logies Inc.

G A-1484 (REV.10/82) i

, TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No. 907057 I"8 A

1. INTRODUCTION As a part of the destructive examination of the cracked Fort St. Vrain Fuel Element 1-2415 [1] , tensile tests were performed on coupon specimens machined from the graphite block af ter the f uel had been removed in the hot cell. Tests were also perf ormed on companion specimens of unirradiated B-327 graphite as a check on the machining and test techniques. The test results are given in this report.
2. MATERIAL 4

E 2.1 Unirradiated Companion Material Unirradiated companion specimens were machined from Great i Lakes Carbon Corp. . grade B-327 graphite, billet number 6484-136, t manufactured lot number 56, piece number 5612. Specimens were y, taken about 1 inch from the edge of a 6 inch deep slab cut perpen-j dicular to the billet axis at the midlength location. Specimens t

with even identification numbers were oriented axially, and speci-i mens with odd identification numbers were oriented transverse to the billet axis.

I 4 2.2 Irradiated Material

.s i Fort St. Vrain fuel element 1-2415, made from B-327 graphite, f" was found to have a hairline crack running axially down the center of one of its hexagonal faces when it was removed from the reactor 5 in April The accumulated fast fluence was approximately

.s 1.55 x 10 2{982.n/cm2 (E > 0.18 MeV, HTGR) and the time- and volume-E averaged temperature was 6500C [1] . Af ter removal of the fuel in j the GA Hot Cell, the element was section as shown in' Figure 1. The 3

  • 6 inch deep section whose f aces were located 8 in. and 14 in. t above mens.

the bottom of the element was used f or the tensile speci- '

The hexagonal faces of the section were identified as shown in Figure 1; the cracked face was designated B. i A slab of graphite approximately 0.44-in. thick was cut ad-jacent to each of the six faces and cores were taken as shown in Figure 2.

The small diameter cores measured 0.270 in. diameter x 4 in. long, and the large diameter core measured 0.40-in. diameter x 0.44-in. long. Several of the small diameter transverse cores broke during coring, as indicated on Figure 2, and additional cores were taken so that four full length transverse cores and '

four f ull length axial cores were available f rom each f ace. The cores were machined into test specimens as shown in Table 1, using a lathe enclosed in a glove box. The specimens were identified by the core number followed by A, B, or C, with the A cores being Page 4

i GA Technologies inc, G A-1484 (R EV.10iE2) l

+ TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No. 907057 I"8 A

taken f rom the sawn surf ace of the slab. The specimens for ther-mal property measurements were held for later tests, and the ten-sile specimens were tested as described below.

3. TEST METHOD ,

i The specimens were cemented between aluminum end pieces using alignment fixtures and mounted in an Instron testing machine.

Chain linkage were used to apply the load. Two 0.5-in. gauge j length extensometers were clipped onto opposite sides of the l specimen. A glove box enclosure exhausted through an absolute 1 i filter was used. The stress on the specimen was increased to 1000  ;

E psi, reduced to 100 psi, and then increased until the specimen 1 2

5 fractured. The extensometer and load cell signals were processed by a MINI 11 laboratory computer which calculated the ultimate i tensile strength, Young's modulus over the 100 psi to 1000 psi t reloading part of the curve, and the fracture strain. Further gi details of the test method appear in Ref. 2.

E

% 4. RESULTS 4.1 Unirradiated Specimens 15 g The test results for the unirradiated companion specimens are

shown in Table 2 (a and b). The mean tensile strength of 19.5 MPa e (axial) and 10.3 MPa (transverse) are about 17% higher than the

-g nominal strengths for B-327 graphite (midlength edge location)

.e given the Graphite Design Data Manual [3]. The mean Young's s moduli (13.2 MPa axial and 5.1 MPa transverse) are 9% and 13% ,

.5 respectively, higher than the nominal handbook values. These g small differences are within the normal log-to-log scatter for j H-327 graphite.

4.2 Irradiated Specimens The test results for the irradiated specimens taken from Fuel Element 1-2415 are shown in Table 3 (a-f). The data are summari-zed in Table 4. The handbook values are the mean of the unirra-diated midlength-edge and end-edge properties given in Ref. 3, multiplied by factors of 1.93 for Young 's modulus, 1.55 f or the axial tensile strength, and 1.30 for the radial tensile strength.

These f actors allow for the stiffening and strengthening effects of a neutron fluence of 1.55 x 1021 n/cm2 at 6500C [3]. The ten-sile strength data are plotted for each face of the block in Fig-ure 3, and the Young's modulus data are plotted in Figure 4.

There is no systematic face-to-face trend in property values.

Data f rom the cracked f ace B f all in about the center of the band in all cases. Furthermore, the measured values are in good agree-ment with the values given in the Graphite Design Data Manual.

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+ TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No. I"'

907057 A

5.

SUMMARY

AND CONCLUSIONS As part of the destructive examination of Fort St. Vrain fuel element 1-2415. tensile tests in both axial and transverse direc-tions were performed on coupon specimens machined f rom the block.

There was no systematic variation in either tensile strength and Young's modulus between material from the six hexagonal faces.

The measured property values were in good agreement with the Graphite Design Data Manual. Thus, there is no evidence that the material near the cracked f ace B was abnormally weak, or that fuel

, element 1-2415 had properties different f rom the general popula-i tion of B-327 graphite billets.

E

! 6. REFERENCES I [1] F. McCord, " Test Procedure for the Destructive Examination of f Fort St. Vrain Fuel Element 1-2415," Document No. 906770, E Issue A (Feb. 25,1983) .

2

$ [2] " Test Method: Tensile Properties of Graphite." Document No.

2 904252, Issue A (Sept. 12, 1979).

s

$ [3] Graphite Design Data Manual, Document No. 906374, Issue 1 i (May 19, 1983).

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, TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No. I"'

907057 A i

Table 1. Test Specimens Machined from Fuel Element 1-2415 I Specimen Specimen Number of Diameter Length Specimens

Type of Test (in.) (in.) Orientation per Face
g Tensile 0.25 1.25 Axial 6 '

! E

Tensile 0.25 1.25 Transverse 6

^

! Thermal 0.25 1.00 Axial 3 Expansivity g,

a Thermal 0.25 1.00 Transverse f Expansivity 3

i Thermal 0.40 0.10 Radial 3 g Diffusivity b

i 3

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GA Technslogies inc, GA-1484 (REV.10/82)

-> TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 t

l Document No. 3 8'"'

907057 A l i i Table 2(a)

TENSILEPROPERTIESOFUNIRRADIATEDH-327 GRAPHITE OREINTATION--AXIAL LOCATION--MLE j BILLETNO. SPECIMENNO. TENSILE YOUNG'S FRACTURE j STRENGTH (MPa) MODULUS (GPa) STRAIN (%)

J 6484-136- 4A 20.0189 14.1412 .209049 g, 6484-136- 4B 21,8558 14.4721 .22485 4 6484-136- 6A 20,1744 14.541 .204025 j

j 6484-136- 6B 19.8328 13,2793 .226434

g 6484-136- 8A 20.0868 11.8728 .262964 i 1 6484-136- 8B 18.2153 13.6516 .183056

_i 6484-136- 80 21.115 13,1483 .240143

)j i 6484-136 10B 19,5545 13,8636 .231916

! I 6484-136 12A 18.8799 12.068 .212472 i 6484-136 12B 19,1816 12.2803 .245149 '

i 6484-136 14A 16.0547 12.9771 .165259

6484-136 14B 18.4784 11.8074 .242569

~

MEAN 19.454 13.1752 .220657

! STD DEV.- 1.48831 .992045 .0276151 l

1 ->

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+ TITLE:

TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No.

907057 '"' A Table 2(b)

TENSILEPROPERTIESOFUNIRRADIATEDH-327 GRAPHITE OREINIATION--RADIAL LOCATION--MLE

.: BILLETNO. SPECIMENNO. TENSILE YOUNG'S FRACTURE

! STRENGTH (MPa) MODULUS (GPa) STRAIN (%)

j 6484-136 1A 10.1486 5.0056 .262183 3 6484-136- IB . 8.78889 5.26553 .201887 E 6484-136- 3A 10.2851 4.76083 .23226 -

l 6484-136- 3B 9.11611 5.63991 .226764 3 6484-136- 5A 10.2466 4.74704 .282838 i 6484-136- 5B 11.0578 5.32069 .275014 j 6484-136- 7A 10.8582 5.60889 .273386 ii 6484-136- 7B 9.21512 4.44023 .272313 i 6484-136- 70 9.44617 4.81254 .245948 i 6484-136 9A 9.79121 4.9273 .233485 j

6484-136 9B 12.4144 5.16982 .361324 6484-136 liA 10.6829 5.4128 .282394 6484-136 lib 11.1707 4.8659 .309738 6484-136 13A 11.4563 5.66474 .310042 6484-136 13B 10.0838 4.74008 .307536 MEAN 10.3175 5.09213 .271808 STD DEV." .982589 .380594 .040663

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GA-1484 (REV.10/82)

, TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No. 907057 issue A Table 3(a)

TENSILEPROPERTIESOFIRRADIATEDH-327 GRAPHITE  :

OREINTATION--AXIAL LOCATION--A BILLETNO. SPECIMENNO. TENSILE YOUNG'S FRACTURE STRENGTH (HPa) MODULUS (GPa) STRAIN (%)

i 1-2415 2A 24.4069 21.7676 .12724 i 1-2415 2B 26.8594 22.2542 .152931 1 1-2415 4A 23.7426 19.2478 ,147947 1 1-2415 4B 24.1272 17.535 .126846 2: 1-2415 6A 24.3219 17.7113 .134686 j 1-2415 6B 23.6499 16.7272 .146269 5

i HEAN 24.518 19.2072 .13932 i

li STD,DEV.- 1.18664 2.3249 .0112332

$ OREINTATION--AXIAL LOCATION--B

.E

~

j BILLETNO. SPECIMENNO. TENSILE YOUNG'S FRACTURE STRENGTH (HPa) MODULUS (GPa) STRAIN (%)

1-2415 2A 24.6017 15.9591 .133313 1-2415 2B 22.9112 16.1096 .142872 1-2415 4A 21.9886 18,9884 .133482 1-2415 4B 23.3126 21.2437 .133069 i-2415 6A 26,4886 20.1634 .159527 1-2415 6B 25,7015 23.0018 .13967 HEAN 24.1674 19.2444 .140322 STD, DEV.- i.7312 2.81587 .0102397 l

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M Technologies Inc.

G A-1484 (REV.10/82)

, TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No. I"'

907057 A Table 3(b)

TENSILEPROPERTIESOFIRRADIATEDH-327 GRAPHITE OREINTATION--AXIAL LOCATION--C BILLETNO. SPECIMENNO. TENSILE YOUNG'S FRACTURE STRENGTH (MPa) MODULUS (GPa) STRAIN (%)

j 1-2415 8A 22.2162 19.5733 .124686 g 1-2415 2B 22.8262 17.0391 .154669 1 1-2415 4A ~ 23.2825 21.1071 .12268 1 1-2415 4B 21.3045 19.0565 .122834

.i 1-2415 6A 22.2937 19.3451 .129177 j 1-2415 6B 23.2304 20.639 .13548 h MEAN -

22.5256 19.46 .131588 i STD. DEV. .748371 1.42498 .0123071

.j OREINTATION--AXIAL LOCATION--D i

! BILLETNO. SPECIMENNO. TENSILE YOUNG'S FRACTURE STRENGTH (MPa) MODULUS (GPa) STRAIN (%) ,

1-2415 2A 22.2086 17.9031 .135371  ;

i-2415 2B 20.9293 20.6709 .117263 l 1-2415 4A 20.8551 21.3614 .107408 1-2415 4B 22.6955 20.5435 .118113 I i-2415 6A 24.1655 22.7706 .128064 1-2415 8A 22.1456 19.2234 .231266 MEAN 22.1666 20.4122 .139581

. STD.DEV.- 1.22708 1.68857 .0459358 Page 11

GA Techn:logies inc, G A-1484 (REV.10/82)

+ TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No. 907057 Ime A Table 3(c)

TENSILE PROPERTIES OF IRRADIATED H-327 GRAPHITE OREINTATION--AXIAL LOCATION--E BILLETN0, SPECIMENNO, TENSILE YOUNG'S FRACTURE STRENGTH (MPa) MODULUS (GPa) STRAIN (%)

j 1-2415 2A 26,4924 22,6485 .137974 g 1-2415 2B 25,7052 21.2453 ,141422 i 1-2415 4A 23,1157 20,8749 .118351 1 1-2415 4B 27,4565 21.657 .147115 i 1-2415 6A 24,8276 24,6311 .111315

_j 1-2415 8A 22.9728 20,4890 .131214 h '

MEAN -

25.095 21.9244 ,131232

_i STD,DEV.- 1,81079 1,51942 .0138865 j OREINTATION--AXIAL LOCATION--F j BILLETN0, SPECIMENN0, TENSILE YOUNG'S FRACTURE i

STRENGTH (MPa) MODULUS (GPa) STRAIN (%)

1-2415 2A 22,9659 22.9062 .126203 1-2415 2B 21,4681 20.7642 ,118723 1-2415 4A 26.6497 16,8403 .161692 1-2415 4B 18,8052 21.6348 .108402 1-2415 6A 21.1616 23,3944 .11322 1-2415 6B 23,8749 20.9881 .129292 HEAN -

22,5042 21.088 .126255 STD,DEV.- 2,64971 2.32731

~

.0190284 OVERALLMEAN - 23 m1 2o.2227 134717

+ OVERALLSTD,DEV~ 1.929o 2. iss7 .olists Page 12

GA Techn logies Inc.

GA-1484 (REV.10 82)

, TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No. 907057 I"' A Table 3(d)

TENSILEPROPERTIESOFIRRADIATEDH-327 GRAPHITE 4

OREINTATION--TRANSVERSE LOCATION--A 4 9

BILLETNO. SPECIMENNO. TENSILE YOUNG'S FRACTURE STRENGTH (MPa) MODULUS (GPa) STRAIN (%)

I i-2415 1A 9.2857 7.93721 .112458 I i-2415 iB 11.0073 7.66576 .169076 3 1-2415 7A 12.7421 7.59403 .196043 i-2415 7A 11.4003 7.92561 .165746

}P

. 1-2415 9A 10.5606 8.30074 .147659 I i-2415 9B 12.2288 7.21106 .189278 3 l l } MEAN -

11.2041 7.7724 j STD DEV.- 1.23181 .37095

.163377

.0303836

! j OREINTATION--TRANSVERSE LOCATION--B g

j BILLETNO. SPECIMENNO. TENSILE YOUNG'S FRACTURE STRENGTH (MPa) MODULUS (GPa) STRAIN (%)

i-2415 1A 8.88635 8.51609 .115529

i-2415 iB 12.1151 7.69831 .182041 1-2415 3A 11.8946 8.51065 .160248 i

1-2415 3B 13.0714 7.58388 .198502 1-2415 7A 14.1619 8.10343 .2C3983 l i-2415 7B 12.4116 8.99743 .166588 i -

MEAN 12.0902 8.23497 .171982 STD. DEV.- i 76983 .541396 .0332484

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GA-1484 MEV.10/82) 4 TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No. 907057 I"' A Table 3(e)

TENSILEPROPERTIESOFIRRADIATEDH-327 GRAPHITE OREINTATION--TRANSVERSE LOCATION--C BILLETNO. SPECIMENNO. TENSILE YOUNG'S FRACTURE

. STRENGTH (MPa) MODULUS (GPa) STRAIN (%)

li 1-2415 1A 14.0114 9.53675 .160396

.! i-2415 iB 14.0002 8.77258 .177843 3 1-2415 3A 15.1607 8.78818 .210088 i

} i-2415 3B 13.2439 8.48645 .182357 1 1-2415 5A 14,7816 8,64084 .199035 i 1-2415 5B 9.08823 8.94309 .17995

.i  :

} HEAN -

13.381 8.86131 ,184945 l

?; STD.DEV.- 2,20712 .364761 .0174095 I OREINTATION--TRANSVERSE LOCATION--D

.i

! BILLETNO. SPECIMENN0, TENSILE YOUNG'S FRACTURE I STRENGTH (MPa) MODULUS (GPa) STRAIN (%)

1-2415 1A 12.0504 8.56207 .158447 i-2415 3B 8.2404 7,92974 .0969362 1-2415 5A 11.3146 8.46677 ,142726 1-2415 5B 12,9649 8.30199 ,192079 i-2415 7A 12.425 7,71043 .188924 1-2415 7B 11.694 8.06893 .158921 MEAN -

11.4482 8,17332 .156339 STD,DEV.- 1.67246 .328116

. .0348259 Page 14

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GA-1484 (REV.10/82)

+ TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No. I"'

907057 A Table 3(f)

TENSILE PROPERTIES OF IRRADIATED H-327 GRAPHITE l'

OREINTATION--TRANSVERSE LOCATION--E BILLETNO. SPECIMENNO.~ TENSILE YOUNG'S FRACTURE STRENGTH (MPa) MODULUS (GPa) STRAIN (%)

, 1-2415 1A 13.9167 8.92454 .185836
3 1-2415 iB 12.1287 8.53567 .178462 l } i-2415 3A 7.20397 7.09947 .100369 j 1-2415 3B 12.577 8.32427 .131553

!l

{ 1-2415 5A 11.2562 7.48047 .172757 e 1-2415 5B 10.1736 7.91046 .134257 l } MEAN 11.2094 8.04581 .150539 j STD DEV.- 2.33081 .681642 .0336504

! OREINTATION--TRANSVERSE LOCATION--F 3

! $ BILLETNO. SPECIMENNO. TENSILE YOUNG'S FRACTURE

! .i STRENGTH (MPa) MODULUS (GPa) STRAIN (%)

j 1-2415 5A 15.2905 9.31854 .198197

i-2415 12.7525 8.2764 5B .180043 l i-2415 7A 10.3877 8.83729 .12623  ;

i-2415 3A 13.5747 8.55807 .178736 i-2415 3B 15.7659 8.8322 .214284

, 1-2415 30 11.7079 7.80718 .166459 l NEAN 13.2465 8.60495 .177325 ,

STD DEV.- 2.06964 .521802 .0301322 OVERALLMEAN

12. 0 W  %.2S2.1 .l6 4 tt

+

OVERALL STD DEV.- 2..oooo o. sus . osont '

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dOgles lnC.

J G A-1484 (REV.10/82;

+ TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No. '"'

907057 A 1

Table 4. Tensile Properties of Coupon Specimens from Fort St. Vrain Fuel Element 1-2415 (B-327) Graphite Tensile Strength, Young's Modulus,

MPa GPa Orientation Face (i std. dev.) (i std. dev.)

E

{ Axial A 24.5 1 1.2 19.2 1 2.3 B 24.2 1 1.7 19.2 1 2.8 I C 22.5 1 0.7 19.5 i 1.4 i D 22.2 1 1.2 20.4 1 1.7 g

f E F

25.1 i 1.8 22.5 i 2.6 21.9 1 1.5 21.2 1 2.3 e

i j All faces 23.5 i 1.9 20.2 i 2.2

$ Handbook value 25.2 1 2.6 23.0 1 7.9 C '

5 Transverse A 11.2 1 1.2 7.8 1 0.4 3 B 12.1 1 1.8 8.2 1 0.5

.e 5

C 13.4 1 2.2 8.9 1 0.4 D 11.4 1 1.7 8.1 1 0.3 y E 11.2 1 2.3 8.0 1 0.7

,g F 13.2 1 2.1 8.6 1 0.5 s

~

  • All faces 12.1 1 2.0 8.3 1 0.6 l Handbook value 12.1 i 1.3 8.8 2.6 1

1 Pg 16

l G A-1484 (REV.10/82)

+ TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT l-2415 Domment No. 907057 laue A i

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GA Technologies Inc.

GA_1484 (REV.10/82)

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GA-1484 (REV.10/82) ,

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- -A C C 4 m. - E - + - m.. .41.*. 7 Figure 3. Tensile Strength of Graphite f rom Fuci Element 1-2415 for Each Pace of the Block Page

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G A-1484 (REV.10/87)

, TITLE: TENSILE PROPERTIES OF FORT ST. VRAIN FUEL ELEMENT 1-2415 Document No. 907057 I" A

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