ML20202H404

From kanterella
Revision as of 11:22, 1 January 2021 by StriderTol (talk | contribs) (StriderTol Bot change)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search
Informs That Land Use Census Identified Location Which Yields Calculated Dose Greater than Values Currently Calculated,Per Section 5.2.1,Action B.1 of ODCM
ML20202H404
Person / Time
Site: San Onofre Southern California Edison icon.png
Issue date: 12/05/1997
From: Medling E
SOUTHERN CALIFORNIA EDISON CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9712100272
Download: ML20202H404 (2)


Text

_ __ _- --

T

' if A!M tWN (AlIICHN14

.' $f EDISON "", r""egulahn by 7 l'rojM, As I:n IvrIIMim Al? G qq l

December 5, 1997 U. S Nuclear Regulatory Commission Attention: Document Contrul Desk Washington, D.C. 20555 Gentlemen:

Sub,iect: Docket No. 50-206 Special 30-Day Report P.adiological Environmental Opeiating Report San Onofre Nuclear Generating Station, Unit 1 Offsite Dose Calculation Manual (ODCM), Section 5.2.1, Action B.1 for San Onofre Unit 1 Facility Operating (Possession Only) License No. DPR-13 requires a 30-day written report'when the land use census identifies a location which yields a calculated dose greater than the values currently calculated.

The analysis of land use census data performed on November 18, 1997 indicated a dose greater than the dcse currently calculated. Tho newly identtfied location, where outage support workers resided in campers, is Parking Lot 4A in Sector Q at 0.5 miles from the Unit I release point. The calculated annual radiation dose was 1.2 x 10 mrem due to Unit 1 airborne effluents. This was an increase of 22% over the value currently calculated for the receptor at San I

Onofre Mobile Home Park (9.87 x 105 mrem), at 1.2 miles in the same Sector, Q. The increased dose resulted from the combination of the occupancy for Parking Lot 4A-(due to the long duration of the Unit 2 and Unit 3 Cycle 9 jU refueling outages) and the close proximity of the Parking Let to Unit 1. The I calculated dose at Parking tot 4A duo to Units 2/3 airborne releases did not exceed the currently calculated dose at Saa Onofre Mobile Home Park.

Detailed' dose calculations indicated there is no need to add any sampling locationsaccordingto00CMrequirementsforUnit1orUnits2/3.

9712100272 971205 PDR ADOCK 05000206' P

San Omfre Nudear Getwrating Statko fa 3 & m\V r O. Ikn i22t a n- e CA 92tilb0128 ww-m

l '

1 . *5 e

Documer,t Control Desk. .

If you require any- additional infortnation, please advise.

Sincerely, jf v Y cc: E. W. Merschoff, Regional Administrator .NRC Region IV K. E. Perkins, Jr., Director, Walnut Creek Field Office, NRC Region IV M. K. Webb, NRC Project Manager, San Onofre Unit 1 H. B. Fields, NRC Project Manager, San Onofre Units 2 and 3 L. C. Carson, Regional Project Inspector, San Onofre Unit 1 J. A. Sloan, NRC Senior Resident Inspector, San Onofre Units t & 3 S. S. Bajwa, Section Chief, Deconnissioning Section L. Brown, California Department of Health Services

.