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fa02 - NPREIME 302 Nuclear ower Eu'ueerin Oé Fa112002...

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Unformatted text preview: NPREIME 302 Nuclear ower Eu 'ueerin Oé Fa112002 Second Test [6&1 Please answer all questions Use the back of the answer sheet as no Name:ll 112 F355 (4:11ng Eat“: 0 > t‘. ‘2 Ba. 5 WdE) llthe following acronyms for nuclear reactor concepts stand for? 35% H 3‘ O WKBolu-‘ia Nate/o Rea do #1. evasive... New m m . L m Amt. as can (A. am (on. .1 - 4 €- c 5 Lli/IFBR‘ “L45 fipifia‘. fdét liaCtOJL ¢ ‘5 a“ M tram mm Fast bum mews, Lfl— o; 0 Compare thevaluesoftheneinronfluxatadisianceof 100 cmsfi’omaueutmnsourceofstrength S = 10 (mg, tum [neuu’ons / sec] in the following moderators materials: i. Moderator Density [gm/cm’] Diffusion Length Macroscopic Diffusion I (L), [cm] absorption cross coefficient, Q.__—-119—- 2. ’76 2.2x10' "Vi/L (H10) Walk «to/‘1. {b _-_ 53 Heavy water Edi—1955 z 100 8.5‘x10‘5 0.85 #111) )1, (as 99.75 % n10) miniature“, Beryllium (Be) W 0 1c. 21 1.2x10” 0.54 Carbon (C) as a; o 0 at. 54 2 3.2x10“ 0.94 /w__ we 3 a [fag/"Tr .m HQOI g —;00/ - :00 W LI 4 cp— (”JP-C ”3 fiL/d“ (M “34> LEE...“ 045297 trflbiflCiOO) ‘tfl L- flSJLioaJ *"L‘mwo‘fl WWI” ' = fiaélklO—BEM:%'L - fill-1f, (no New—£42"; :iR-g‘iifi Ncwbtons : I33'?}‘5 3 ,. sues on'fll Ste—flea, 566 5mm 9“ Considerareactorconsisfingofz.54cmdiameternac' urani metalrodsmspcndedinacylindiical tankfilledwithheavywater (D20) asamoderatorandooolant Therodsarear—rangcdina squarelattice withapitch spacing of15.2 cm 'I'heheightto diameterratiomnk) ofthe cylinderis 1.2. 'I'heinfiuite medium multiplication fiictor of sucha lattice ls km— - l 25 2The difl‘usion area for thermal neutrons is L2= 175 cmz, andthe Fermiageforfnstneuirons is t 5120 emz. 1. Calculate the migration area M2 for this lattice configuiation. 2. Calculate the material buckling for such a system using the modified one grmiptheory for a large reactor. 3. Calcifiate the uitical radius andthe critical height ofthe reactor. 4 Calculate thenumberoffiielrodsmthe core 5. Calcu31]atfi the volume and weight in metric tonnes of the uranium metal In the core if its density is 19 [gm/cm 6. Calculate the volume am! weight in metric tonnes ofthe D20 in the core ifits density is 1.1 [gin/cmal ® M1: Llil :7 /'i’5'tm1+ i305m7': ® 6;: -1 m ML = (-Rfi—l : fit‘f'fil'S‘Mcf‘ L/H @ (3ft (oi-#0573 “7 ~. my“ = W m :a L a 1 a 272“ i ' a . 7 Ii 50 a“ 5m (:th . r ' .11.. )&+ 4&2; at q H é)’ gg 4km zeTAL R; J = infirm ,0' Ha Ruflsemm i , mm k/q ...
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