ML20087G677

Revised Proposed Disposal Procedures for Radioactively Contaminated Fuel Oil

ML20087G677
Person / Time
Site:	FitzPatrick
Issue date:	02/29/1984
From:	POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:
Shared Package
ML20087G671	List: ML20087G667 ML20087G677
References
JPN-84-17, PROC-840229, NUDOCS 8403200096
Download: ML20087G677 (6)

Text

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ATTACHMENT No. 2 TO JPN-84-17 s

NEW YORK POWER AUTHORITY JAMES A. FITZPATRICK NUCLEAR POWER PLANT Proposed Disposal Procedures for Radioactively Contaminated Fuel Oil

1.0 INTRODUCTION

In accordance with the provisions of 10 CFR 20.302(a), this document describes procedures proposed by the New York Power Authority for the incineration of radioactively contaminated fuel oil at the James A. FitzPatrick Nuclear Power Plant.

2.0 DESCRIPTION

OF LICENSED MATERIAL Seven 55-gallon drums filled with #6 tuel oil have become contaminated with very low levels of Co-60 and Cs-137. The i total activity of these drums is approximately 51 micro Ci. l This contaminated fuel oil was recovered from the Auxiliary l Boiler Room Floor Drain Oil Separator. (Refer to Table 1.) l l

2.1 Other Radioactive Material Involved No other radioactive material will be involved.

2.2 Proposed Manner and Conditions of Disposal The oil will be incinerated in the auxiliary boilers at the Authority's James A. FitzPatrick Nuclear Power Plant. The contaminated oil will be transferred from seven, fifty-five gallon drums to underground auxiliary boiler storage tank 1A where it will be used as fuel for the boilers. The auxiliary boiler storage tank has a capacity of 30,000 gallons which will further dilute the contaminated fuel oil. The average burn rate of fuel oil in an auxiliary boiler is 165 gal /hr (the maximum burn rate is 496.2 gal /hr). The gases are vented through a boiler outlet equipped with a dust collector and a fly-ash collection system.

No special conditions will be imposed on auxiliary. boiler operation.

The release of the particulates will be included in the appropriate seminannual report as a batch release occurring on the day that the drum's contents were added to the fuel oil tank.

8403200096 840315 PDR ADOCK 05000333 P PDP

' Revised 2/84

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l Alternate Disposal Costs 1

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Disposal of fuel oil by this method will save approximately l

$25,000 in burial costs (including absorbant material, preparation and nandling time and transportation fees) and will save approximately 250 cubic feet of space in a commercial waste-disposal site.

Table 2 describes our estimate of the disposal costs associated with burial.

2.3 Analysis and Evaluation Radiological Effects Using the current Technical Specification formula for particulate and halogen airborne releases to the environment, a 51 micro Ci release would result in a maximum of 20.5% of Technical Specifications limits. Based upon actual quarterly releases, this release would result in an average percentage increase of 0.007% percent.

No credit is taken for treatment of releases in the exhaust l

path and the assumption is that the contaminated oil would be burned and the total activity released in approximately three-quarters of an hour.

The instantaneous release rate to the environs of I-131 equivalent halogen and particulates witn half-lives greater than eight days is limited by Environmental Technical Specification Section 2.3.B.2. The portion of the formula limiting ground level releases from FitzPatrick is:

--- + --- + (QvFITZ/8.9E-8) =1 and the estimated duration of the release assuming no dilution and boiler at maximum firing rate is:

(385 gals y496.2 gal /hr) x 3600 sec/hr = 2793 see therefore, assuming no dilution and coiler operating at maximum firing rate, tne maximum instantaneous release is:

51E-6 Ci/2.79E+3 sec =

0.205 8.9E-8 or approximately 20.5% for 0.78 hours9.027778e-4 days <br />0.0217 hours <br />1.289683e-4 weeks <br />2.9679e-5 months <br />.

When averaged over a calendar quarter in accordance with semiannual radiological effluent reporting requirements, that average is:

SlE-6 Ci/7.78E+6 sec =

7.36E-5%

6.9E-u or approximately 0.007%.

Revised 2/84

FitaPatrick Tecnnical Specifications currently limit

[ , tne dose to persons witnin unrestricted areas to 500 mrem /yr. Tnis limit applies to whole body or any organ

s doses from airborne halogens and particulates witn

!, half-lives greater than eight days. Tnis limit applies to releases from tne main stack and vents of uuth FitzPatrick and Nine Mile Point' Unit 1. Tne dose L attrioutanle to tne proposed con'taminated oil is calculated as follows:

L S00 mrem /yr. x 7.368-S4 = 3.6.88-2 or-approximately 0.04 I mrem /yr.

A second calculation using tne draft ODCM (Offsite Dose Calculation Manual) metnodology agreed with tne wnole bodyoranyorgandoseof0.Opmremwitnin+25%.

The following is an estimation of residual radioactive

,. material of tne tank assuming.tnat tne 3dSNgallons is thoroughly mixed with tne contents of a full Fuel Oil Tank 1A.

t Activity of tank = b l ,4JCi (Co-60 + Cs-137) 30,000 gal x 3,785 ml/ gal ,

5 =

4.498-7 ALCi/ml s

If the content of the tank is completely used (ourned)

, assume that oil 1 cm thick will cling to the tank Walls.

Contamination = 4.498-7 4Ci/cc x 2.22E+6 dpm/ A(, Ci x 100 cm

= 9.97E+1 dpm/100 cm2 x Disc smears are approximately 203 efficient; tuerafore measurable smearable activity would be:

Smearable contamination ^= 100 dpm/100 cm 2 x 0.20

~% y s -

= 20 dpm/100 cm 2 Tne plant's unrestricted area smearaole contamination limit is 1,000 dpm/100 cm2, ,

?

Nature of Environment Refer to the James A. FitzPatrick Final Safety Analysis Report (FSAR), Cnapter 2 (Site and. Environment) for pertinent information as to tne nature of tne environment, including topographical'(Section 2.1.1), geological (Section 2.5), meteorological (section 2.2), nydrological (Section 2,4) cnaracteristics;' usage of ground and surface waters in tne general area (Sections 2.1.2, 2.4.lJand 2.4.2 ) and location of otner potentially affected facilities (Section 2.1.'3 ) . ,

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Revised 2/84

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, 2.4 Ptocedures to Minimize Risk of Unexpected or Hazardous l Exposures  !

Prior to transferring the contents of the seven fuel oil drums to Fuel Oil Tank 1A, a sample from each drum l will be taken. These samples will be subjected to i Ge"Li" isotopic analysis. Analysis results uill be  !

compared with prior samples to ensure accuracy and consistency.

Other than this analysis, the Authority does not propose using any special procedures related to the incineration of this fuel oil. The analysis presented in Section 2.3 of this document clearly shows that the incineration of this fuel oil represents an insignificant change in the amount of radioactive effluents released and no significant environmental impact can be attributed to the proposed action.

Therefore no special procedures are proposed.

3.0 REFERENCES

1. Code of Federal Regulations, Title 10, Part 20.302,

" Method for obtaining approval of proposed disposal proceaures."

2. 10 CFR 20.305, " Treatment or disposal by incineration."

3. USNRC Office of Inspection and Enforcement Information Notice No. 83-05, " Obtaining Approval for Disposing of Very-Low-Level Radioactive Waste - 10 'R Section 20.302," dated February 24, 1983.

4. NRC Policy Statement on Low-level Waste Volume Reduction, Octouer 16, 1981 - 46 FR 51100.

5. 10 CFR 61, " Licensing Requirements for Land Disposal of Radioactive Waste," July 24, 1981 - 46 FR 38031.

6. James A. FitzPatrick Nuclear Power Plant Environmental Technical Specifications, Section 2.3.B, " Airborne Effluents."

7. James A. FitzPatrick Nuclear Power Plant Final Safety Analysis (FSAR), Revision 0 dated July 1982, Chapter 2,

" Site and Environment."

Revised 2/84

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TABLE 1 i r /

w 66 PUEL OIL SAMPLE AND ANALYSIS  !

JANUARY 11, 195J l

Waste Oil' ACi/ml Total Activity in mci l Labeled As co-60 Cs-137 Co-60 Cs-137 il 3.37E-5 ND* 7.02 ND

1. 3 3.44E-5 HD 7.16 ND 2

(4 -3.77E-5 ND 7.85 ND  ;

I5 1.49E-5 ND 3;10 ND i i 66 5.31E-5 ND 11.05 ND

#7 4.70E-6 ND 0.98 ND 98 6.14E-5 4.40E-6 12.78 0.92 i TOTAL 49.94 0.92 4

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• ND-Not Detected

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Revised 2/84

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i . TABLE 2 COST OF BURIAL DISPOSAL OF SEVEN DRUMS OF HUMBER 6 FUEL OIL j i

5 Solidification 7 drums of 36 oil x 10 solidified drums x $130/ drum = $ 9,100 i Cost drum or 96 011 Burial Cost 70 drums x 7.5 cu. ft. x $18.97/cu ft = 9,960 drum .

Labor Cost 20 hours2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br /> x $ 15.60 = 300 nour Transportation = 5,000

. TOTAL $24,360 4

1 Notes for Table 2:

a. Because of the viscosity of 96 fuel oil, " Speedy Dry" type absorbants cannot be used. Instead, contractors are retained to perform the required solidification. Based upon previous experience, the cost for solidifying #6 oil using concrete, soaps, etc., is approximately

$130 per solidified drum.

b. Por the purpose of estimation, a 10:1 solidification factor is used.

c. The current cost of burial is $18.97/ cubic foot.

d. 20 man-hours would be expended.for preparing the lead for shipment at an average rate of $15.60/hr.

e. Transportation cost is approximately $5,000.

Revised 2/84.

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