ML20198R033
| ML20198R033 | |
| Person / Time | |
|---|---|
| Site: | 07001100 |
| Issue date: | 10/29/1997 |
| From: | Weber M NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | |
| Shared Package | |
| ML20198R023 | List: |
| References | |
| NUDOCS 9711130132 | |
| Download: ML20198R033 (3) | |
Text
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~ Ik UNITED STATES t- na 4 _-NUCLEAR REGULATORY COMMISSIOtt (s,, .
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- LICENSEE
- Combustion Engineering l Windsor. Connecticut l e
SUBJECT:
' SAFETY EVALUATION REPORT: APPLICATION DATED MARCH 29. 1996. REL OF BUILDING 21 a
BACKGROUND
-By application dated March 29. 1996, and supplements dated September 13.-1996.
. and April 15 -(letter submitted to Region I) and October 17. 1997. Combustion Engineering. -Inc. (CE) requested that Building 21 and its immediate environs -
be= removed as an authorized place for use of licensed material and be released for. unrestricted use. Building 21 was used for storing containers of UO powdersandfuelpelletswhenCE'suraniumfueloperationwasbeingcond[2cted from 1968 to 1993-. Af ter CE shut down its uranium fuel operation in 1993. CE started the decontamination and decommissioning activities of Building 21 in :
accordance with a decommissioning plan that was approved by the N M on February 22. 1995. The objective of deummissioning was to decontaminate the building and its immediate environs to levels that meet the NRC release ,
criteria as defined in Regulatory Guide 1.86. " Termination of Operating License for 'Dclear Reactors." and Option 1 of the Branch Technical Position.
" Disposal'or Onsite Storage of Thorium and Uranium Wastes from Past Operations." October 1981.
. DISCUSSION .
By letter dated March 29_. 1996. CE submitted the Final Status Survey Report (FSR) for Buildino 21 in support of a request to release Building 21 and its immediate environs for unrestricted use. The staff reviewed the FSR and determined that the radiological survey and methodology of the FSR are-
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consistent with NRC's guidelines and common practices. Staff comments on the FSR were transmitted to CE by letter dated July 18, 1996. CE's response to
> those comments was submitted by letter of September 13. 1996. Based on its review of this information. the staff reconmended that a confirmatory survey-
-be conducted for Building 21 in accordance with NRC's procedure for the unrestricted release of facilities and that the confirmatory survey include an investigationfof.-the prevalence of less' than background activities reported by CE in-the FSR for several survey locaticns.
On Aipril 14 through 17, 1997, an NRC confirmatory survey of Building 21 was '
- conducted by staff from Region 1. This survey consisted of measurements of fixed contamination, measurements of removable contamination, d
direct Jradiation measurements The measurements-were made both irr e, 2.id nutside of the building Additionally, soil-samples were taken around the perimeter of the building.
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- 2 In performing the confirmatory survey, the NRC staff investigated CE's ceported below background activity levels. For example.~50 percent of the areas which exhibited questionable below background activities, as reported in the FSR, were chosen by the staff as survey locations for fixed contamination. l NRC's confirmatory survey results were re)orted in NRC Inspection Report No. 070-100/97-01 dated June 10. 1997. T1e results of the survey indicated that no radiation levels above background were measured. In fact many measured values were less than measurements of background radiation, confirming CE's data. The confirmatory survey confirms the results documented in CE's FSR and demonstrates that CE meets the NRC criteria for release of Building 21 and its immediate environs for unrestricted use.
Following completion of decommicsioning actin: " submitted a supplement dated October 17, 1997, to remove references to tsu . ' .g 21 in License SNM-1067.
ENVIRONMENTAL GFVI G CE has decontaminated Building 21 and its immediate environs below the levels in Regulatory Guide 1.86. " Termination of Operating License for Nuclear Reactors." and Option 1 release criteria (30 pCi/ gram for enriched uranium) defined in the Branch Technical Position. " Disposal or Onsite Storage of Thorium and Uranium Wastes from Past Operations." October 1981. Therefore, release of Building 21 and its environs will meet the following conditions:
- 1. There is no significant change in the type or significant increase in the amount of any ef fluents tnat may be released offsite.
- 2. There is no significant increase in individual or cumulative occupational radiation exposure.
- 3. There is no significant construction impact.
- 4. There is no significant increase in the potential for, or consequences from, radiological accidents.
Therefore, in accordance with 10 CFR 51.22(c)(11), neither an Environmental Assessment nor an Environmental Impact Statement is warranted for this proposed action.
CONCLUSION The staff has reviewed CE's radiological survey results and NRC's confirmatory survey results for Building 21 and its immediate environs and has determined that the release of these areas will have no adverse effect on public health dnd safety or the environment. Therefore, the staff recommends that Building 21 and its immediate environs be released for unrestricted use.
The Region I project inspector has no objection to the proposed action.
The radiological criteria for license termination s)ecified ir,10 CFR Subpart E became effective on August 20. 1997 (62 F1 39058). As specified in 10 CFR 20.1401(b)(2). the criteria do not apply to Build-ing 21 and its
-immediate environs because CE submitted and received Commission approval on a decommissioning plan for these areas prior to the effective date of the rule
- 3 that is compatible with the Site Decommissioning Management Plan (SDMP) criterja.
The NRC docs not plan to take any further actions regarding these released areas and will not require any additional decommissioning in response to-future NRC '.riteria or standards, unless additional contamination is found, indicatmg a significant threat to public health.
Fr1ncinal Centributor; ii sean Soong Susan Chotoo ,
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