ML20154L375

Forwards Proprietary Rev a to N001SRR140087, Radiation Survey for Release for Unrestricted Use - L-85 Reactor Facility, Including Improved Measurements from Scintillation Detector.Rept Withheld

ML20154L375
Person / Time
Site:	05000375
Issue date:	03/06/1986
From:	Remley M ROCKWELL INTERNATIONAL CORP.
To:	Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML19276D291	List: ML20154L375
References
86RC03345, 86RC3345, NUDOCS 8603110460
Download: ML20154L375 (3)

Text

r-o, e Rocketdyne Division Rockwell lnternational Corporation Rockwell cene.e. M.IJn'!;To* International Telex: 698478 ROCKETDYN CNPK

!! arch 6,1986 In reply refer to 86RC03345 Mr. Harold Denton c/o PWR-B/SSPD U.S. Nuclear Regulatory Commission Washington, DC 20555

Subject:

Radiation Survey Report of the L-85 Reactor Facility Following Dismantlement and Decontamination of the Facility, Docket No. 50-375

Reference:

Rockwell International Letter 86RC00316 dated January 8, 1986, M. E. Remley to Harold Denton,

" Radiation Survey Report of the L-85 Reactor Facility Following Dismantlement and Decontamination of the Facility, Docket No. 50-375"

Dear fir. Denton:

The Rockwell International L-85 nuclear examination reactor covered by Facility License No. R-118 has been dismantled and decontaminated in accord with dismantling plans previously transmitted to the Nuclear Regulatory Commission. With our letter of January 8, 1986, referenced above, we submitted a report of the final radiation survey of the facility which presented data to show that the radiation levels in the facility met the requirements described in the dismantling plans.

In subsequent discussions with the staff in t.ie Region V office of

.NRC, concerns were expressed regarding the appropriateness of using NaI (TI) scintillation detectors for measuring the radiation fields in the facility. To provide higher quality data and result in more accu-rate measurements of the radiaticn fields, the scintillation detectors were calibrated with two Reuter-Stokes high-pressure ion chambers, and the fields were comprehensively remeasured with those calibrated scintillation detectors.

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flarc 1986 Rockwell Page 2 International The report of the final radiation survey has been revised to include the results of these improved measurements, and we are now confident that the decontaminated facility meets the requirements described in the dismantling plans. Seven copies of the revised report are enclosed for your information and review. Following your review, we request that the facility be inspected by representatives of the Nuclear Regulatory Commission, that License No. R-118 be terminated, and the facility be released for unrestricted use.

If you have questions or need further information, please call me at (818) 700-4270.

Sincerely yo M. E. e ey, Dire r NuclearSafetyand(L" censing Rocketdyne Division 1743A/emh

Enclosure:

Revised Radiation Survey Report for L-85 Nuclear Examination Reactor (7) cc w/ enclosure:

Mr. Frank A. Wenslawski Region V Office, NRC Mr. Joseph 0. Ward Radiologic Health Section California Department of Health Services Mr. Kim Wong Radiation Health Unit California Division of Operational Safety and Health

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