ML20247A284
| ML20247A284 | |
| Person / Time | |
|---|---|
| Site: | 07000920 |
| Issue date: | 02/22/1989 |
| From: | Ryan R RENSSELAER POLYTECHNIC INSTITUTE, TROY, NY |
| To: | Pennington W NRC |
| Shared Package | |
| ML20247A287 | List: |
| References | |
| 25246, NUDOCS 8903290088 | |
| Download: ML20247A284 (4) | |
Text
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Mr.
ennington s\\ y, DOCKET CLERK Uranium Fuel Section United. States Nuclear Regulatory'Co Washington 25, D.C.
Reference:
SNM - 910
Subject:
Request for admendment Gentlemen:
Please amend the above referenced license to include the use of sixty four (64) enriched uranium SPERT F-1 fuel rods at Rens:>91aers' Linear
' Accelerator Laboratory. The following information is be.ng applied in support of the application.
1.
Fuel Description 2.
Transportation 3.
Intended use.
4.
Storage 5.
Radiological 6.
Criticality 1.
L,tel: Rensselaer received under license number CX-22, at our. Critic 51 Reactor Facility in Schenectady, NY, 592 SPERT fuel pins from ANL in December 1987.
497 of these were loaded in Rensselaers' Critical Facility-reactor core and are in use at the present time.
The remaining 95 are stored in the fuel vault at that facility.
Each of these fuel pins contain UO2 fuel pellet's with a 4.81 w/o enrichment of U235 to give a U235 content per pin of about 35.2 grams.
The attached figure 1 shows the SPERT fuel pin.
The total U235.
content in the 64 pins that we would like to use at Rensselaers' Linear Accelerator Facility in Troy, New York is 2252.8 grams.
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W.
Scott Pennington February 22, 1989 pg. 2 1
l 2.
Transportation: The 64 fuel rods will be transferred to Rensselaers' Linear Accelerator Laboratories using a 110 Gal shipping cask, previously used by ANL to transfer the fuel to RPI.
The shipping cask is at the RPI Critical Facility, along with packing naterials.
The actual shipping will be performed by an RPI truck with a lift on the rear end for easy loading and unloading.
l Total weight of the shipping cask will be less than 500 lbs.
Following the use of the fuel pins at the Linear Accelerator Laboratory the fuel will be returned to the Critical Facility Laboratory. The SPERT fuel pins will be loaded back into the shipping container and conveyed to the Critical Facility by truck.
The pins will then be removed form the shipping container and placed in a designated storage location in the vault.
3.
Intended use:
The fuel rods will be used for fuel assay by pulsed neutron interrogation. We plan to use an aluminum structure called Euel Assembly Eor Eissile Assay (FAFFA) shown in the enclosed blueprint.
The pitch of the fuel assembly is 0.64" (1.63 cm), and the fuel rod OD is 0.466" (1.1836 cm).
This pitch is very close to that used in commercial 8 x 8 BWR assemblies.
Thirteen instrumentation channels (5/16" OD) are available in the FAFFA to place miniature fission chambers. We intend to use the same location in the Rensselaer Intense Neutron Spectrometer (RINS), used by E.C. Vanterpool in his -
doctoral thesis at Rensselaer (1988).
4.
Storace: The fuel pins will be loaded into the " Full Assembly for Fissile Assay" (FAFFA) from the shipping container when they arrive at Rensselaers' Linear Accelerator Laboratory (LINAC).
The FAFFA will be stored in the LINAC target room (see figure 2) during its stay at the laboratory.
It will bowever be moved from its experimental position within the lead spectrometer during pulsed neutron interrogation to a storage location when deemed necessary and not in use.
The Material will be accounted for as required in all material balance sheets.
5.
Radiological Conditions:
During the pitched neutron interrogation experiments the FAFFA will not become radioactive by activation or by fission of the uranium isotopes to restrict access to the assembly.
Levels are expected to be below 5 mr/hr. as measured at 1 meter which would require to be labeled a " hot spot".
Handling without additional shielding is expected.
We do not expect any air borne contamination as the fuel is contained, nor do we expect any tramp contamination as the assembly and fuel will be swiped and counted for alpha-beta prior to assembly.
Periodic swipes will also be made.
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Mr. W.
Scott Pennington February 22, 1989 P9 3 6.
Criticality:
Since the FAFFA is well below criticality and it is not going to be used with any other special nuclear materials, nor is it going to be used in conjunction with any other experiment or other special nuclear materials we do not for see a criticality hazard..
However we will place a criticality monitor in close proximity to the FAFFA while it is in storage.
The criticality monitor will be "on" when the LINAC is not operating and personnel can enter the area.
Sincerely, 4
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Robert M. Ryan, Director Office of Radation and Nuclear Safety cc R.
C. Block D. Harris F. Rodriguez l
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