ML19274E872
| ML19274E872 | |
| Person / Time | |
|---|---|
| Site: | 07001359 |
| Issue date: | 03/15/1979 |
| From: | Mortz R IRT CORP. |
| To: | Rouse L NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| NUDOCS 7904280209 | |
| Download: ML19274E872 (2) | |
Text
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" '"=NM Instrumentation l Research l Technology
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March 15, 1979
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United States Nuclear Regulatory Commission Division of Fuel Cycle S Material Safety Office of Nuclear Material Safety 5 Safeguards Washington, D. C. 20555 o
Attention:
Mr. L. C. Rouse, Chief
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.l Fuel Processing 5 Fabrication Branch
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Gentlemen:
Reference:
Docket 70-1359; SNM 1405 Amendment No. 8 to the referenced license set specific limits on materials procession limit for 1RT's Convoy Court facilities. A recently acquired experimental program will involve the use of components which contain fully enriched in 23g in excess of the presently specified limitation.
It is therefore requested that the possession limits for U-235 be modified as given below and that the limits for plutonium and U-233 remain the same.
Enri chment
- o Mass (grams)
Form
<4 1400 Metal, oxides, car-bides, rods, pellets plates or powder
>1 500 Metal, oxides, car-bides, rods, pellets plates or powder For any combination thereof the total quantity of U-235 shall not exceed the amount defined by the following equation:
mass of U-235 <4% enriched ma s s o f U -235 >4"o enriched ey 1400 500
'Ihe mass limitation defined by the above equation when coupled to the maximum weighted mass of Pu and U-233 (weighting factor of 2.5) is below critical mass for homogenized systems of various enrichments with optinum moderation and full reflection as given in Figure 13 of TID-7028.
7650 Convoy Court e P O Box 80817 e San n. ego, Ca!dornia 92138 714: 565-7171
- Te!er 69-5412 a a r <y n c D.. n w J eg 9 0 4 o 8 0 %@
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IRT b
Corporation Page 2 Mr. L. C. Rose Except for those materials described in our amendment Number 9 dated November 13, 1978, the materials will be encapsulated as scaled sources; Pu in amounts exceeding 1 milligram will be doubly encapsulated.
It is also requested that the exemption from the requirements of 10 CFR
- 70. 24 remain in effect.
No massive moderators or reflectors of beryllium, heavy water, or graphite are present in the storage area or work area.
It is believed that this modification of the mass limits constitutes an administrative amendment and a check for $150.00 is enclosed.
If you have any questions or need additional information please call K. L. Crosbic at (714) 565-7171, Ext. 378.
Thank you for your cooperation.
Yourw1 ly
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- b Robert L. Mert:
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President