IR 05000610/2009012
| ML20203D002 | |
| Person / Time | |
|---|---|
| Site: | 04006659, Abilene Christian University |
| Issue date: | 04/10/1986 |
| From: | Brich R, Pettengill H NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| NUDOCS 8604210333 | |
| Download: ML20203D002 (3) | |
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DISTRIBUTION Docket File 40-6659 PDR/DCS DBangart, RIV 40-C659/RFB/86/03/26/0 RBrich-1-GKonwinski WDEQ (2)
APR 10 EE6 JHaes, RCPD, WY LLW Branch, WMLU URF0 r/f
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URF0:RFB Docket No. 40-6659 04006659420E f
MEMORANDUM FOR:
Docket File No. 40-6659 FROM:
Randall F. Brich, Project Manager Licensing Branch 1 Uranium Recovery Field Of# ice, Region IV SUBJECT:
REVIEW 0F PETR0T0MICS MILL DECOMMISSIONING SUMMARY
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Background e
In accordance with License Condition No. 25 of Source Material License
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SUA-551, Petrotomics Company submitted, on February 27, 1986, a summary
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report of the decommissioning and demolition activities conducted at the
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Shirley Basin Mill during the period from June 10 to September 12, 1985.
The decommissioning involved demolition of the mill buildings and associated ancillary facilities, as well as onsite burial. The mill tailings impoundment will be reclaimed at a future date.
A special construction inspection conducted on October 22-23, 1985, of the activities conducted in accordance with License Condition No. 25, as s
they relate to interim cover placement, indicated that 2 feet of clean overburden had been r'. aced over the entire millsite disposal area. The inspector also notaa that the interim reclamation cover elevations were approximately # feet lower than indicated on Figure 2 of the licensee's June 4, 1985 submittal.
In accordance with the inspector's recommendat'on and License Condition No. 25, the licensee submitted as-built drawings of the disposal areas ar.d cross-sections of the interim cover (F'gures 3 and 4, respectively, of the February 27, 1986 submittal). The licensee also submitted Figure 1 with their February 27, 1986 ieport which indicates actual interim cover elevations. The f llowing staff review of the licensee's submittal assesses the adequacy of the decommissioning in compliance with the requirements of Source Material License SUA-551.
OFC :
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NAME :
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PDR ADOCK 04006659-DATE :86/04/09
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40-6659/RFB/86/03/26/0
_2-APR 101986 Discussion The licensee's typical method of demolition included segregation of all components and materials destined for res' tricted area disposal, from those that were considered salvageable.
Salvageable items were contained within a special control area until decontamination procedures were complete and the items were transferred from the site.
An estimated 50,000 cubic yards of unsalvageable contaminated components and materials were buried either onsite or within the tailings impoundment. All foundations were either broken into pieces and buried or buried intact and subsequently covered with 2 feet of overburden. A similar situation existed for all materials associated with the mill.
The only system which remains intact at the facility is the tailings distribution lines which will be utilized in the tailings impoundment for l
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the enhanced evaporation system.
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All components and materials released for unrestricted use were decontaminated in accordance with Attachment No. 1 to SUA-551.
Additionally, there were several pieces of contaminated equipment and associated components that were transferred to the holder of another
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source material license. Supporting documentation indicates that these items were packaged and shipped in accordance with applicable Department of Transportation regulations.
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Significant items of concern, committed to in the report and associated with the mill decommissioning are as follows:
The security fence will be maintained until radiation surveys and associated soil cleanup indicate that certain portions may be
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removed. Additionally, a manned guard station will be maintained;
therefore, site security will be assured.
- A bond, sufficient to cover the remaining decontamination and reclamation activities is being maintained with the State of Wyoming.
All accountable source material has been transferred off-site.
Documentation of all decommissioning activities including radiation surveys and materials transportation forms have been completed and remain on file at the site office.
The next routine inspection will be utilized to verify that the required documentation has been conducted.
OFC :
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NAME :
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DATE :86/04/09
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i APR 10 msg 40-6659/RFB/86/03/26/0-3-
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All liquids used in cleaning out the mill circuit and decontamination
efforts during decommissioning were disposed of in the tailings impoundment. Nonradioactive solid waste was placed in a state permitted sanitary landfill which has been utilized throughout the period of milling. Radioactive solid waste was handled according to two methods.
A portion of the material (i.e., steel catwalks, pump stands and other
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open framework structures) was placed in the tailings impoundment in accordance with License Condition No. 46, while the remainder was buried on-site, in trenches up to 20 feet deep, in the immediate vicinity of the mill. All areas receiving radioactive solid waste will ultimately become a portir 'f the permanent disposal area. The primary and secondary crushe are dump pocket and conveyors were surveyed and found to be free cf contcmination. Therefore, these items were placed in Pit 33-1 and covered with a minimum of 6 feet of overburden.
As noted previously, after the October inspection, 2 feet of clean s
overburden was placed on the mill site area to serve as an interim reclamation cover. As shown on Figure 1 of the February 27, 1986 submittal, final elevations of the mill site disposal area are approximately 5 feet lower than those predicted in the approved Decomissioning Plan. The lower elevation is a result of better than predicted compaction of the debris as wdll as utilization of a drainage sump north of the mill complex for disposal. A minimum of 2 feet of clean interim reclamation cover has been placed over the mill site area to provide surface water drainage. Because the topography resulting from initial burial efforts was rather uneven, numerous locations within the
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mill site disposal area have more than 5 feet of clean cover over them.
Conclusion The staff review of the decomissioning sumary reveals that decomissioning activities were conducted in accordance with Source Material License SUA-551. An interim reclamation cover of a minimum 2-foot depth has been placed over the entire mill site disposal area, and the required documentation has been submitted as required by License Condition No. 25. The staff therefore recommends that Petrotomics Company incorporate the revised contours as shown in Figure 1 of their February 27, 1986 submittal into their pending reclamation plan.
Randall F. Brich, Project Manager Licensing Branch 1 Uranium Recovery Field Office Region IV Approved by:
Harry J. Pettengill, Chief Licensing Branch 2 Uranium Recovery Field Office, Region IV CASE c t.ssc e : e ssoo urg gynd 0FC :URF0
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NAME]Brich/1v Konwins
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