ML20248B368
| ML20248B368 | |
| Person / Time | |
|---|---|
| Site: | 07000734 |
| Issue date: | 12/21/1988 |
| From: | Asmussen K GENERAL ATOMICS (FORMERLY GA TECHNOLOGIES, INC./GENER |
| To: | Thomas R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| Shared Package | |
| ML20248B373 | List: |
| References | |
| 696-1318, NUDOCS 8908090215 | |
| Download: ML20248B368 (2) | |
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Decuder 21pp98pll, J, i 696-1318 Mr. Robert D. Thmas, Chief Nuclear Materials Safety Section U.S. Nuclear Regulatory Ccmnission Region V 1450 Maria Lane, Suite 210 Walnut Creek, CA 94596
Subject:
Docket 70-734: SNM-696; Request for Release of Selected Laboratories to Unrestricted Use (Group 3)
Dear Mr. Thomas:
General Atomics (GA) has been involved in the process of decontaminating and otthg the release to unrestricted use of selected laboratories and associated offices in GA's Building 2 (also known as the Science Laboratories Building).
Thirty-eight (38) such laboratories were released earlier this year in two groups designated as " Group 1" and " Group 2. "
Group 1 involved the release of 25 laboratories and Group 2 involved the release of 13 laboratories.
GA has recently decontaminated another group of laboratories in Building 2.
This grcnp consists of 15 laboratories (12 of these laboratories have mezzanines) and 9 other mezzanines located above laboratories which are not being released at this time. These latter laboratories are currently occupied; however, none of the activities involve the use of radioactive material.
This group of laboratories and associated offices are designated as " Group 3."
GA has no plans for conducting any future activities involving radioactive materials in the laboratories and/or mezzanines included in " Group 3" and would like to lease same, or all, of these laboratories to outside campanies. The offices across the hall fram these laboratories, which have never been used for work involving radioactive materials, may also be leased to outside campanies. Accordingly, GA is requesting the release of these laboratories and/or mezzanines and their associated offices to unrestricted use.
'Ib assist you in planning for the confirmatory survey and the subsequent release of the subject facilities to unrestricted use, the results of GA's final radiation and contamination surveys are provided
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in the enclosed report.
The 15 laboratories (12 have mezzanines) and 9 other mezzanines in
" Group 3" consist of a total area of about 8,704 fts. A brief history of the use of these laboratories is provided.
The primary radio-nuclides previously used in these laboratories were Cs-137, Co-60, u2as, depleted.or natural uranium, and thorium.
Only one laboratory (Lab 323) required decontamination beyond the removal / decontamination g{
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10955 JONNUAY HOPKINS DRIVE, SAN DIEGO.CA 92121-1194 PO. BOX 85608. SAN DIEGO. CA 92138-5608 (619)455 3300
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of sources and contaminated equipnent (including drain pipes, Icods, filter plenums and associated ducting).
This involved the scabbling of about 20 ft8 of concrete on the floor and the wall of Lab 323. The primary contaminants found during the decontamination efforts were Cs-137 and uranium (including 1F85 ).
GA has decontaminated equignent and facilities consistent with the State of California's and U.S.
Nuclear Regulatory Co:: mission's i
guidelines for release of facilities and equipnent to unrestricted j
use.
The results of GA's final surveys (provided in the enclosed report) demonstrate compliance with these guidelines.
GA has tenants who are desirous of occupying the subject laboratories.
and associated offices as soon _ as they are released.
-Itis, therefore, inportant to GA to obtain the requested release as soon as possible.
Concurrent with subnitting this request to you, we are naking a similar request to the State of California Depart 2nent of i
Health Services.
I Appro-imately five rocrns in GA's Experimental Building (i.e., Building
- 9) are also being decontaminated in preparation for release to
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unrestricted use.
These roams occupy an area where TRIGA' fuel fabrication operations were performed prior to about 1976. A report documenting GA's final survey of this area is in preparation and will be sent to you in January 1989.
If you should have any questions regarding our request or the enclosed report, please contact ne at (619) 455-2823.
Very truly yours,
)
QUArtb kulwh Keith E. Asmussen, Manager I
Licensing, Safety and Nuclear Compliance I
Mmh Enclosure i
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