ML20236D190

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Requests Approval to Routinely Dispose of Slightly Contaminated Used Oil/Solvents W/O Concern for Radiological Hazards.Justification for Request & EA-TAH-87-02, Max Allowable Radioisotope Concentrations... Encl.Fee Paid
ML20236D190
Person / Time
Site: Big Rock Point File:Consumers Energy icon.png
Issue date: 10/23/1987
From: Frisch R
CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML20236D193 List:
References
NUDOCS 8710280060
Download: ML20236D190 (11)
v • d • e


Text

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October 23, 1987

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o Nuclear Regulatory Commission Document Control Desk' Washington, DC 20555 l

DOCKET 50-155'- LICENSE DPR BIG ROCK POINT PLANT -

REQUEST TO ROUTINELY DISPOSE OF SLIGHTLY CONTAMINATED USED OILS / SOLVENTS IN ACCORDANCE WITH 10CFR20.302 The Code of Federal Reg.latione, Title 10, Section 20.302 allows for' approval I of proposed procedures to dispose of licensed material in a manner not otherwise authorized in the regulations. Big Rock Point Plant produces three to five 55 gallon drums of slightly radioactively contaminated used oils, solvents and oil / solvent mixtures per year. At present, there are approximately 25 drums stored on site. These wastes contain sufficiently low concentrations or quantities of radionuclides that they do not need to be managed or disposed of as radioactive. waste. Justification for this request is in the the attachment to this letter. Pending NRC approval that, radio-

. logically, these wastes are below regulatory concern, Consumers Power Company will dispose of these wastes in the same manner as ary other hazardous worte.

Disposing of these used oils, solvents and oil / solvent mixtures as non-radioactive hazardous waste will result in no discernable impact on either the environment or on occupational or public health. Therefore, Consumers Power Company requests NRC approval to dispose of these wastes without concern for radiological hazards.

The US Environmental Protection Agency, Region V, Radiation and Hazardous

By advising these agencies our intent is to keep all parties which may have concerns regarding the disposal of these wastes abreast of Consumers Power Company's plans. In addition, the Michigan Department of Public Health has 1

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p OC1087-0191-NLO2-NLO4 I I c, cge,cu Q.0g I

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  • a Nuclear Regulatory Commission 2 l Big Rock Point Plant l 10CFR20.302 Disposal Request )

October 23, 1987 l reviewed this request and has not expressed any dissenting concerns provided i NRC approval is granted.

Pursuant to 10CFR170.12(c) a check in the amount of $150.00 is enclosed. 3 l

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, 1 UA Mbb Ralpi R Fri ch Senior Licensing Analyst  ;

CC Administrator, Region 111, NRC NRC Resident Inspector - Big Rock Point Plant Attachment i

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OC1087-0191-NLO2-NLO4 t

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ATTACHMENT Consumers Power Company Big Rock Point Plant -

Docket 50-155 i

JUSTIFICATION FOR REQUEST TO ROUTINELY DISPOSE OF I SLIGHTLY CONTAMINATED USED OILS / SOLVENTS IN l' ACCORDANCE WITH 10CFR20.302 October 23, 1987 i

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38 Pages l

OC1087-0191-NLO2-NLO4

Introduction Big Rock Point Nuclear Power Plant produces three to five 55 gallon drums of radioactively. contaminated waste oil / solvent (waste oil, solvent or a mixture of the two) per year. This oil / solvent is only slightly contaminated yet it must be solidified for disposal at a licensed low level radioactive waste burial ground. At present, approximately 25 drums of slightly contaminated oil / solvent are stored on site. This will produce 50 drums of low level dry radioactive waste when solidified prior to shipment for burial. Disposal of this oil / solvent into a low level radioactive waste burial site is not consistent with utilizing the limited burial space efficiently. An evaluation of dose consequences due to the contaminated oil / solvent has been prepared by assuming worst case conditions for each exposure pathway and for disposal site hydrology.

Based on the results of this evaluation and the commitments made herein, Consumers Power. Company hereby requests authority under 10CFR20.302 to routinely dispose of slightly contaminated waste oil / solvent in the same manner as non-radioactively contaminated waste oil / solvent. It is felt there will be no discernible impact on either the environment or on occupational and public health.

Waste Stream Description Big Rock Point has approximately 25 barrels of slightly radioactively contaminated waste oil / solvent in storage in the radioactive waste storage building. Three to five barrels (the bulk of which is turbine oil) are produced each year. In preparation for shipment of non-radioactively contaminated waste oil / solvent, a quart-sample from each drum is sent off-site to Consumers Power Company's Lab and Field Technical Services Department for analysis to aid in determining the type of hazardous waste and in choosing the proper hazardous waste disposal site to ship to. Since the Lab and Field Technical Services Department is not a licensed facility, the mixtures of contaminated waste oil / solvent are assumed the same as the mixtures of non-contaminated waste oil / solvent analyzed in the past. Major types of oils and solvents deposited in the waste oil drums are listed in Table Three. Table Four records waste oil / solvent sample analysis results provided by the Lab and Field Technical Services Department. j Results of isotopic analysis of contaminated waste oil / solvent are given in Table Five.

Description of Proposed Disposal Method It is proposed that slightly contaminated waste oil / solvent be routinely disposed of in the same manner as non-r.dioactively contaminated waste oil /

solvent. To define "slightly contamina:ed", the following criteria is proposed:

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MIO387-0100A-BX01 l

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a. Individual concentrations of radioisotopes do not exceed the limits given in Table One.

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TABLE ONE: MAXIMUM CONCENTRATIONS [pCi/ml]

Isotope l Concentration *[pCi/ml]l Mn 54 2E-04 Co 60 2E-04 Fe 59 2E-04 Cs 137 2E-05 Cs 134 2E-05 Ag 110m 2E-04 Nb 95 2E-04

  • Conservative estimate of the concentration which will result in an annual dose of 1 mrem. Refer to Appendix One for development of these limits.
b. The total estimt.ted annual dose to a hypothetical maximally exposed individual does not exceed 1 mrem. This can be determined by ensuring the sum of the ratios of actual radioisotope concentrations to the limiting concentrations does not exceed 1.0.

y concentration max. concentration -<1.0 Af ter performing an isotopic analysis on a represen'.ative sample froc each waste oil / solvent drum and determining that the radioactivity concentrations are within the limits defined above. A sample from each drum will be sent to the Lab and Field Technical Services Department for analysis and a hazardous waste disposal site will be selected.

Evaluations of the Radiological Impacts of Waste Disposal Evaluations of the radiological impact due to disposal of the contaminated waste oil / solvent into a non-radioactive materials hazardous waste disposal site have been prepared by assuming worst case conditions for the maximally exposed individual. The evaluations (EA-TAH-87-02 and EA-TAH-87-04) provide conservative dose estimates to all individuals involved with the contaminated MIO387-0100A-BX01

e 4-3 waste oil / solvent - whether they are plant employees, Lab and Field Technical Services technicians, truck drivers, disposal site employees or members of the general public. The~ worst case conditions evaluated include standing in an  !

oil spill, being submerged in oil, ingesting oil, inhaling effluents created '

in the event the oil is burned, and handling oil / solvent during analysis. The graatest radiological impact was found to be due to ingestion of the contaminated oil / solvent. The evaluation was also used to determine the activity concentration limits (Table One) by selecting the most limiting concentrations for each isotope from among the results of each exposure pathway. Average. radioisotope concentrations and resulting doses expected to be encountered at Big Rock Point are presented in Table Two.

TABLE TWO: AVERAGE RADIOISOTOPE CONCENTRATIONS [pCi/ml] AND RESULTING DOSES [arem} TO THE MAXIMALLY EXPOSED INDIVIDUAL Isotope Average Concentration [pci/ml] Annual Dose *[arem]

Ha 54 2.3E-06 1.2E-02 Co 60 6.5E-06 3.3E-02 Fe 59 1.2E-07 6.0E-04 Cs 137 1.4E-06 7.0E-02 Cs 134 1.9E-07 9.5E-03 Ag 110m 6.7E-08 3.4E-04 Nb 95 1.6E-08 8.0E-05 max conc =0.12<<1.0 I

Total = 0.13 arem

  • per 55 gallon drum of waste oil / solvent For the. shipment of 25 barrels of contaminated waste oil, the annual dose to the maximally exposed individual is expected to be 3.3 mrem. After the initial shipment of waste oil, Big Rock Point Plant is expected to ship less than 5 barrels of waste oil / solvent per year resulting in a maximum annual dose of .65 mrem.

Cost Analysis A cost comparison for shipment of 25 barrels of oil to a non-radioactive hazardous waste disposal site rather than to a solid radioactive waste disposal site is presented below:

MIO387-0100A-BX01 L__-__--_-

4 Solid Non-Radioactive. ,

Radioactive Waste

! Hazardous Waste l Disposal Disposal. i l Number of barrels of oil 25 25 Cost of solidifier per barrel $200. NA Solidification Labor Cost per bt.rrel $ 20* NA l 011 sample analysis NA _, $250t Total preparation cost $5,500 $6,250 Ratio (barrels solidified / barrel' oil) .2 NA Total Number of Barrels to ship 50 25 i Waste Disposal Ground Cost / Barrel $ 263** $ 54 Freight Cost $1,500*** $ 562 Total Shipping Cost $14,650 $1,912 Preparation of NRC Exemption Request NA $2,500 NRC Review and~ Approval NA $ 150 Total Cost for Disposal $20,150 $10,812 ,

  • - Solidification labor cost per barrel ~15 min / barrel ($25/hr)(2 maintenance -i men +-1 Rad Pro Technician)

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Disposal Ground Cost = (25 $/cu.ft of space + 10 $ surcharge /cu.ft) (7.5  ;

cu.ft/ barrel)

      • 70 barrel full load. i

't Cost for oil sample analysis of Lab and Field Technical Services between i

$200 and $300 per sample.

Environmental Impact Assessment l

The disposal of the slightly contaminated waste oil / solvent into a non-radioactive materials hazardous waste disposal site will have no significant impact on the quality of the human environment. Hazards related to the transport and disposal of waste oil / solvent will not be changed or increased by approval of j this request - shipment of non-radioactively contaminated waste oil / solvent will continue whether these barrels are added to the shipment or not. Also the number of (or noise from) trucks will not be increased by approval of this request.

l License Amendment Information 1

No changes to the Big Rock Point Plant Operating License will be required as a '

result of approval of this request. l l

Summary The estimated total cost for solidification and transportation of the contaminated waste oil / solvent to an approved disposal facility is estimated to be twice the cost of disposal to a non-radioactive materials- hazardous waste disposal site. Shipment of the drums containing radioactivity concentrations much less than necessary to be considered " radioactive material" as defined in transportation regulations 49CFR Part 173.403 and less than exempt concentration limits given MIO387-0100A-BX01

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! l l =in 10CFR Part 30.70 schedule A, would. result in inefficient use of limited l

available burial space at a licensed facility.

Handling of the waste-oil / solvent in the same manner as non-radioactively contaminated waste oil / solvent would result in no discernable impact on either the environment or on occupational and public health.

Conclusion We request to dispose of slightly contaminated waste oil / solvent in the same I manner as non-radioactively contaminated waste oil / solvent for the above mentioned reasons. The impact on both the environment and occupational and public health will be negligible.

Appendices EA-TAH-87-02 " Maximum Allowable Radioisotope Concentrations in Waste Oil / Solvent" EA-TAH-87-04 " Doses During Analysis of Radioactively Contaminated. Waste 011/ Solvent by Lab and Technical Services"

[ References

1. Code of Federal Regulations, Title 10, 1985.
2. Code of Federal. Regulations, Title 49
3. IE Information Notice 83-05, " Obtaining Approval for Disposing of Very Low-Level Radioactive Waste - 10CFR20.302."
4. IE Information Notice 86-90, " Request to Dispose of Very Low-Level Radioactive Waste Pursuant to 10CFR20.302."
5. USNRC Regulatory Guide 1.109, " Calculation of Annual Doses to Man from

. Routine. Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10CFR Part 50, Appendix I," Revision 1, 1977.

6. "A Guide for-Obtaining Regulatory Approval to Dispose of Very Low-Level

' Wastes From Nuclear Power Facilities By Alternative Means," GP-R-211013, Rev 1; General Physics Corporation, March 1986.

7. Big Rock Point Administrative Procedure Volume 17, " Quality List (Q-List)",

Chapter 11 - Control of Chemicals or Consumables In or In Contact With Q-List Systems, Structures or Components; Rev 47.

8. Consumers Power Company Internal Correspondence to RLBurdette from PSZombo dated October 2, 1986. File Index numbers 528617-510-248-1 and 2.

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