ML19337B602

Annual Rept for 1979. Describes Status of Decommissioning Facility

ML19337B602
Person / Time
Site:	Saxton File:GPU Nuclear icon.png
Issue date:	09/25/1980
From:	SAXTON NUCLEAR EXPERIMENTAL CORP.
To:
Shared Package
ML19337B601	List: ML19337B599 ML19337B602
References
NUDOCS 8010070488
Download: ML19337B602 (11)

Text

{{#Wiki_filter:. t' 3 ~ V l SAX' ION NUCIEAR EXPERUEGE QRPORATION ( MMJAL REPORT For thd Period l January 1,1979 - Deccrrber 31, 1979 8 030070 gg

Annual Report in coupliance with Paragraph B.S.b of the Technical Specifications: 1. Information relating to changes in those staff positions that are designated as being responsible for the deactivated facility: There have been no changes during this report period. 2. A sunnary of entries into the Containment Vessel or Radioactive Waste Disposal 1 1 Facility and reasons for entry: Quarterly inspections which required entry into the Containment Vessel and Radioactive Waste Disposal Facility were conducted on March 29, June 29, Septaber 20 and Decertber 27, 1979 i The NRC Region 1 Office of Inspection and Enforement conducted an inspection i of the facility on September 20, 1979. See Attachment.A for details of Inspection. 1 3. A sununry of maintenance and design changes made to the deactivated facility: There have been no changes during this report period. Minor repairs were made to sheet metal roof on the Safety Injection Pump House and flashing between Safety Injection Punp abuse and the Refueling Water Storage Tank. 1 4. Results of surveys of radioactive levels and of water sanple analyses: Four surveys of the facility were made during this report period. Radiation levels at the exclusion fence were less than 0.1 mr/hr.; radiation levels inside the Containment Vessel, above elevation 812, were generally less than _0.1 mr/hr; radiation levels o. the breather pipe filter were less than 0.1 mr/hr; radiation surveys of the 20 permanently marked survey points were less than O.3 mr/hr. Analyses of the resident water in the RWDF and the tunnel in general indicates that the gross Beta-Ganma activity is about 4.0 x 10-7 uCi/cc.

Inspection of the Containment Vessel lower levels indicates the vessel is dry and free of water. 5. A sunmary of the perfonnance of security and surveillance measures: There have been no attempted break-ins, vandalism, or other unusual events at the facility since deconmissioning.

SAXION NUCLFAR EXPERIMENTAL (DRPORATION Annual Report For the Period January 1, 1979 - December 31, 1979 i A'IT.ONENT A On September 20, 1979, an NRC inspector identified an area outside the SNEC perimeter fence (See Figure 1), but inside the PEtELEC perimter fence having detectable radiation levels on the surface of the soil. The w ntaminated area was roped off with warnino signs and on September 21, 1979, cleanup of the contaminated area was initiated. The attached Figure 2 shows the as-found condition in the area. 'IWenty-three (23) 55 gal. drums of contaminated soil were renoved from the area on Septcnnber 21, 1979, and noved to the SNEC Control and Auxiliary Equipment Building for temporary storage. The results of this decontamination effort are shown on Figure 3, 4 and 5. Except for two small areas shown on Figure 5, the radiation levels were reduced to less thaa 0.1 mr/hr at ground level. The contaminated area was allowed the weather until October 14, 1979, at which l j time a sem nd survey was made of the area. Seven smaller areas within the roped off area were identified as having radiation levels greater than 0.1 mr/hr. One additional 55 gal. drum of contaminated soil was renoved from the area to reduce I radiation levels to less than 0.1 mr/hr. Surveillance of the area will be continued to verify that the contamination is not the result of mitigation of radioisotopes frun the filled drum storage area or from the SIEC site. On October 14, 1979, a survey was made of the area shown in Figure 6. The area i shown is on PENELEC property but outside the PENELEC perimeter fence. The survey identified four (4) small areas; A, B, C and D having radiation levels above background. On Decenter 27,- 1979, three (3) 55 gal. drums of soil were renoved from the four u

areas identified on Figure 6. Following removal of the contaminated soil, radiation levels were reduced to less than 0.1 mr/hr. at ground Icvel. Surveillance of the four areas will be continued to verify that the contamination is not the result of migration if radioisotopes from the SNEE site. The above background radiation IcVels identified by the September 20, and October 14, 1979 surveys is due to surface contaminatim of the soil by the radioisotopes 137 l34 Cs g and to sme extent Co It is felt that the presence of these radio-isotopes is the result of decormissioning activities conducted at the Saxton site during 1972 and 1973. The contaminated areas were not previously identified b2cause no surveys, or inadequate surveys were made of the areas outside the SNEC perireter fence following completion of decomnissioning activities in 1973. l

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