ML19341D125
| ML19341D125 | |
| Person / Time | |
|---|---|
| Site: | 07106581 |
| Issue date: | 01/02/1981 |
| From: | SIEMENS POWER CORP. (FORMERLY SIEMENS NUCLEAR POWER |
| To: | |
| Shared Package | |
| ML19341D121 | List: |
| References | |
| 18272, NUDOCS 8103041011 | |
| Download: ML19341D125 (5) | |
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IflTRODUCTI0ft The Exxon fluclear Company has a ccMeact to return two fresh fuel assemblies plus 36 fuel rods from a reactor site to Exxon iluclear's facility for recovery of the contained uranium.
This is to request anendment of Certificate of Compliance Number 6581 for the Model_ 51032-1 and 51032-la shipping containersII) to allow the transport of the two fuel elements (75 inches long each) and 36 fuel rods in a single shipping container as a Fissile Class III shipment.
The two fuel elements will be secured in place end-to-end in one compartmsnt of the shipping container and the 36 fuel rods, bound with metal straps and placed in a wooden container, will be placed in the adjacent compartment of the same chipping container.
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DESCRIPTION OF FUEL TO BE SHIPPED l
Table 1 lists fuel assembly parameters describing the two Juel bundles to be shipped in the Model 51032-1 shipping container.
Table 2 lists fuel rod parameters by group for the 36 rods.
The average fuel assembly enrichments are 3.25 w/o for Fuel Element X and 2.59 w/o for Fuel Element Y.
For all 36 rods to be shipped the maximum enrichment of any single rod is 2.90 w/o.
I*I. CRITICALITY SAFETY AilALYSIS OF SHIPMEilT A fuel shipment consisting of a single shipping container containing Fuel Elements X and Y and the 36 fuel rods (as defined in Tables 1 and 2 and packaged as depicted in Figure 1) will be adequately subcritical for 8103041oll -
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. Table 1 Fuel Assembly Parameters Fuel Element X Fuel Element Y Type:
BWR BWR Rod Array 7x7 8x8 Length, in.
75.0 75.0 235 Enrichment, Ave. wtt U
3.25 2.59 Fuel Rod OD, in.
0.70 0.57 Pellet 00, in.
0.61
.489 Pitch, in.
0.931
.814 Clad fiaterial Zr-2 Zr-2 Clad Thickness, in.
0.04 0.04 Eff. Cross-Sectional Area, in.
6.52 x 6.52 6.di x 6.51 V /V Ratio 1.91 2.40 g p k= (CCELL) 1.421 1.360 Table 2 Fuel Rod Parameters Group A Group B Group C (28 Rods)
(7 Rods)
(1 Rcd)
Fuel Rod OD, in.
.563 0.428
.563 235 Enrichment, wtt U
2.51 2.70 2.90 Clad fiaterial Zr-2 SS Zr-2 Clad Thickness, in.
0.04 0.01 0.04 Pellet CD, in.
.503 0.402 0.503 Length of Rods, in.
75 75 75
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X'l-301,901, Rev.1 (see
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Figure 12.12 of Reference 1).
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T-I Figure 1 Model 51032 Shipping Container Internal Arrangement of Fuel Elements and 36 rods I
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both the damaged and undamaged shipping container conditions. As defined in Reference 1 (see Table 12-XIV, page 12-35), XN Fuel Type F fuel assemblies may be shipped Fissile Class III in the Model 51032 shipping 1 container. XN Fuel Type F assemblies generally are limited to an assembly
. a'.'erage enrichment of < 5.0 wt." 235U and cross-sectional area of < 8.0 inches. The calculated maximum infinite multiplication factor (k=) of a Type F assembly at a moderator-to-fuel volume ratio of 2.1 and pellet 00
, of 0.5 inches is about 1.52 (see Figure 12.1 of Reference 1). As shown in Table 1, the calculated k= values of Fuel Elements X and Y are well below 1.52.
Hence, based on the comparisons summarized in Table 3, the
[ criticality safety analysis of XN Fuel Type F as a Fissile Class III shipment is conservatively valid for the proposed two fuel assembly /36 rod arrangement.
i Table 3 1
i Comparison of XN Fuel Type F and Fuel Bundles X and Y and Rods (36)
Fuel Bundle 36 l
XN Fuel Type F X
Y Rods Enrichment, w/o 5.0 3.25 2.59 2.90 (max. rod)
FuelAssemblyCrosj-Sectional Area, in 8.0 6.52 6.51 i
Fuel Pellet OD, in.
0.50
- 0. 61 0.49 0.50 V /V Ratio 2.1 1.9 2.4 g p K-1.52( )
1.42 1.36
< l.41(3) (CCELL)
(2) See Figure 12.1, Reference 1, page 12-37.
(3) This represents the maximum fuel assembly k= value for 0.50" pellet 00 (max.) unciad fuel enriched to 3.0 w/o.
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REFERENCES 1)
Xil-52, Rev.1, "Consol1 dated License Application For Exxon !!uclear Company, !nc. tiodel 51032-1 and -la Shipping Container, Exxon iluclear Company, June 1979.
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DOCKET NO. 71-6581 FEB %
G31 Exxon Nuclear Company. Inc.
Re:earch and Technology Center ATTN:
Mr. Leo E. Hansen Staff Specialist 2955 George Washington Way P.ichland, Washington 99352 Gentleaen:
We received your letter of January 2,1981, and check for $150 for an amendment to Certifica te of Compliance No. 6581.
Your request has been classified by the Licensing staff as requiring a minor amendment to the certificate since the review will involve consideration of safety issues.
Therefore, a minor amendment fee of $E90 is required, as specified in fee Category 11C of Section 170.31 of Part 170, copy enclosed.
Payment of the additional $540 should be made to the U.S. Nuclear Regulatory Conmission and mailed to my attention.
When submitting the fee, please refer to CONTROL NUMBER 18272.
If you have any cuestions, please contact us.
Sincerely.
Original Sig::ed 3y J. D. Weiss Douglas Weiss License Fee Management Branch Silver Spring Of fice Office of Administration
Enclosure:
10 CFR 170 DISTRIBUTION:
L30cket File PDR Matis. License Fee File LFMB R/F (SS) t LFMB R/F (Beth)
ASCabell, LFMB l
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