ML012980209

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Safety Evaluation for a Request to Dispose of Contaminated Dredged Sediment at the Oyster Creek Generating Station Pursuant Top CFR 20.2002
ML012980209
Person / Time
Site: Oyster Creek
Issue date: 10/30/2001
From: Gibson K
NRC/NRR/DIPM/IOLB
To: Raghavan L
NRC/NRR/DLPM/LPD1
Klementowicz S, NRR/DIPM/IRSB, 415-1084
References
-nr, FOIA/PA-2005-0293, TAC MB1088
Download: ML012980209 (4)


Text

October 30, 2001 MEMORANDUM TO: Lakshminaras Raghaven, Acting Chief Section 1 Project Directorate I-1 Division of Licensing Project Management Office of Nuclear Reactor Regulation FROM: Kathy Halvey Gibson, Chief /RA/

Emergency Preparedness and Health Physics Section Reactor Safeguards, Radiation Safety, and Emergency Preparedness Branch Division of Inspection Program Management Office of Nuclear Reactor Regulation

SUBJECT:

SAFETY EVALUATION FOR A REQUEST TO DISPOSE OF CONTAMINATED DREDGED SEDIMENT AT THE OYSTER CREEK GENERATING STATION PURSUANT TO 10 CFR 20.2002 The Emergency Preparedness and Health Physics Section has completed its review of the AmerGen Energy Companys (the licensee) request, pursuant to 10 CFR 20.2002, dated December 29, 2000, as supplemented on September 25, 2001, to dispose of previously dredged material which contains licensed radioactive material onto licensee owned property.

Based on our review, we find that the licensee has provided adequate justification to support its request. The attachment to this memorandum provides our evaluation of the licensees application.

This completes our review under TAC No. MB1088.

Docket No. 50-219

Attachment:

Safety Evaluation CONTACT: Stephen Klementowicz, NRR/DIPM/IRSB/EP/HP (301) 415-1084

SAFETY EVALUATION BY THE EMERGENCY PREPAREDNESS AND HEALTH PHYSICS SECTION OFFICE OF NUCLEAR REACTOR REGULATION OYSTER CREEK GENERATING STATION DOCKET NO. 50-219 1.0 Introduction By letter dated December 29, 2000, as supplemented on September 25, 2001, AmerGen Energy Company (the licensee), submitted a request, pursuant to 10 CFR 20.2002, to dispose of approximately 180,000 cubic yards of previously dredged material which contains licensed radioactive material onto the Finninger Farm property immediately to the east of Oyster Creek.

This property is owned by the licensee but is not considered part of the Oyster Creek Plant site as defined in the Updated Final Safety Analysis Report. The material was generated as a result of dredging portions of the Oyster Creek and Forked river in 1978, 1984, and 1997. The licensees dredging of these waterways was performed in accordance with the final environmental statement for the Oyster Creek Generating Station and the New Jersey Board of Public Utilities to remove sediment from the creek and river bottom, which was causing shoaling. The disposal method consisted of pumping the dredge material to a dewatering basin, allowing the material to dry.

2.0 Evaluation The licensee performed a comprehensive radiological evaluation of the dredged material located in a 17.5 acre area on the 600 acre Finninger Farm property. The evaluation included data from the radiological analyses of the sediment performed prior to the last dredging in 1997.

These samples were analyzed for gamma emitting radionuclides in accordance with the licensees Radiological Environmental Monitoring Program. The maximum concentrations of radionuclides in the sediment attributable to effluents from the Oyster Creek Station were 0.08 picocuries per gram for Cobalt 60 and 0.270 picocuries per gram for Cesium 137. Sampling and analyses performed on the 1978 and 1984 dredged material showed the radionuclide activity to be less than that of the 1997 material.

The licensee calculated the potential annual dose to the average member of the critical group (i.e., a resident farmer) from the probable exposure pathways (i.e., direct exposure, inhalation, consumption of crops and water) based on the volume of disposed material, the radionuclide

composition, and the activity. The assessment is conservative because: no background activity has been subtracted, radionuclide concentration averages are based only on the positive sample results, and no adjustment for radioactive decay to the present date was included. The resultant calculated annual dose to a member of the public is less than 1 mrem.

3.0 Conclusion The staff finds the licensee's application to dispose of approximately 180,000 cubic yards of dredged sediment will result in a potential annual dose to a member of the public of less than 1 mrem. This calculated dose is well within the 10 CFR Part 20 annual dose limit of 100 mrem and less than the decommissioning criteria for unrestricted use of 25 mrem in a year. The staff finds the licensees application, pursuant to 10 CFR 20.2002, will not have an adverse impact on the public and is acceptable.

2

October 30, 2001 MEMORANDUM TO: Lakshminaras Raghaven, Acting Chief Section 1 Project Directorate I-1 Division of Licensing Project Management Office of Nuclear Reactor Regulation FROM: Kathy Halvey Gibson, Chief /RA/

Emergency Preparedness and Health Physics Section Reactor Safeguards, Radiation Safety, and Emergency Preparedness Branch Division of Inspection Program Management Office of Nuclear Reactor Regulation

SUBJECT:

SAFETY EVALUATION FOR A REQUEST TO DISPOSE OF CONTAMINATED DREDGED SEDIMENT AT THE OYSTER CREEK GENERATING STATION PURSUANT TO 10 CFR 20.2002 The Emergency Preparedness and Health Physics Section has completed its review of the AmerGen Energy Companys (the licensee) request, pursuant to 10 CFR 20.2002, dated December 29, 2000, as supplemented on September 25, 2001, to dispose of previously dredged material which contains licensed radioactive material onto licensee owned property.

Based on our review, we find that the licensee has provided adequate justification to support its request. The attachment to this memorandum provides our evaluation of the licensees application.

This completes our review under TAC No. MB1088.

Docket No. 50-219

Attachment:

Safety Evaluation CONTACT: Stephen Klementowicz, NRR/DIPM/IRSB/EP/HP (301) 415-1084 DISTRIBUTION EPHP Reading File K. Gibson H. Pastis S. Klementowicz ADAMS Accession Number: ML012980209 Document Name: C:\Program Files\Adobe\Acrobat 4.0\PDF Output\Oyster Creek 20.2002.wpd OFFICE DIPM/NRR DIPM/NRR NAME SKLEMENTOWICZ KGIBSON DATE 10/ 29 /2001 10/ 30 /2001 OFFICIAL RECORD COPY