ML19289D349

Semi-annual Operating Rept of Radioactive Effluent Releases from Jul-Dec 1978

ML19289D349
Person / Time
Site:	Duane Arnold
Issue date:	12/31/1978
From:	IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:
Shared Package
ML19289D348	List: ML19289D346 ML19289D349
References
NUDOCS 7903050369
Download: ML19289D349 (8)

Text

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SEMI-ANNUAL REPORT Radioactive Effluent Releases July 1,1978 thru December 31, 1978 e

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RADIATION EFFLUENT REPORT July 1,1978 thru December 31, 1978 ITEM UNITS 3RD QUARTER 1978 4TH QUARTER 1978 A. Gaseous Effluents

1. Gross Radioactivity curies 2.76 E01 1.71 E01 .

2. Maximun 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> Release Rate pCi/sec 1.77 E01 2.17 E00

3. Nuclides Released Xe-138 curies Kr-87 curies Kr-88 curies Kr-85m curies Xe-135 curies Xe-133 curies < l .02 E01 Kr-85 curies < l .74 E01 < l .71 E01 Xe-135m curies

4. Tritium Released curies 1.04 E-01 4.35 E-01

5. Percent of ETS (16% Limit) Note 1  % 2.02 E-02 3.38 E-03 a

i M M e g e g P *=y

The Duane Arnold Energy Center was shutdown on June 17, 1978 as a result of increased drywell leakage. That leakage was determined to originate from a recirculation riser safe end. The plant was shutdown during the remainder of the year, while replacing all recirculation riser safe ends.

Because of the shutdown condition, gaseous effluents decreased below the lower limit of detection for most radionuclides and could not be accurately measured. The quantities reported are based on calculated values, utilizing the following assumptions:

1) Production of gaseous radionuclides ceased with the plant shut-down on June 17, 1978.

2) Concentrations of gaseous radionuclides decrease as function of the nuclides half-life only.

3) An individual nuclide could be considered as not present if the concentration was below its lower limit of detection.

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RADIATION EFFLUENT REPORT July 1, 1978 thru December 31, 1978 ITEM UNITS 3RD QUARTER 1978 4TH QUARTER 1978 B. Iodine Releases

1. Total I-131 Released curies <l.85 E-03 <6.71 E-05

2. Total I-133 Released curies <l.54 E-03 <3.65 E-03

3. Total I-135 Released curies <7.99 E00 <l.29 E01

4. Percent ETS Limit 5.66 E-02

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(I-131) Note 2  % 1.62 E00 C. Particulate Releases

1. Total Release curies 6.25 E-04 ci <7.48 E-04 ci

2. Gross Alpha Released curies <l.08 E-06 <2.35 E-06

3. Nuclides Released Co-60 curies 3.84 E-04 5.43 E-04 Mn-54 curies 1.33 E-04 1.54 E-04 Co-58 curies 1.30 E-05 6.53 E-07 Fe-59 curies 1.72 E-06 ---------

Cs-137 curies 5.19 E-06 1.58 E-05 Cs-134 curies 6.72 E-06 3.27 E-05 Cr-51 curies --------

1.22 E-06 Sr-89 curies <1.74 E-07 <3.84 E-07 Sr-90 curies <l.02 E-07 <2.19 E-07 Unidentified curies 7.99 E-05 -------

4. Percent ETS Limit

- (Part) Note 3  % 5.41 E-01 5.58 E-01

5. Percent ETS Limit (I-131 & Part) Note 4  % 2.16 E00 6.14 E-01

NOTE 1 OS OV 0.21 (1.4 X 103)(MPC)

% ETS = 0.16 X 100 NOTE 2 Q3 Qy

=

1.3 X 10 100

%ETS(I-131) 08 NOTE 3 Q3 Qy

+ -

1.3 X 106 1.8 X 10 7 100

%ETS(PART)

= 0.08 NOTE 4 Oy Os +

1.3 X 10 6 1.8 X 107 X 100

%ETS(P&I-131) = 0.08

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RADIATION EFFLUENT REPORT July 1, 1978 thru December 31, 1978 LIQUID EFFLUENTS UNITS 3RD QUARTER 1978 4TH OUARTER 1978 A. Gross Radioactivity curies 8.51 E-03 2.01 E-03 B. Average Concentration pCi/ml 6.81 E-08 2.01 E-08 C. Maximum Concentration pCi/ml 1.31 E-07 1.86 E-07 D. Tritium

1. Total Activity curies 6.49 E01 5.40 E01

2. Average Concentration pCi/ml 5.19 E-04 5.41 E-04 E. Alpha

1. Total Activity curies <3.54 E-05 2.67 E-05

2. Average Concentration pCi/ml <2.83 E-10 2.67 E-10 F. Noble Gases

1. Total Activity curies 0 0 --

2. Average Concentration pCi/ml 0 0 G. Volume

1. Tank liters 3.97 E05 7.67 E05

2. Dilution liters 1.25 E08 9.92 E07

3. Total liters 1.25 E08 9.99 E07 H. Nuclides Released Cr-51 curies 2.17 E-04 0 Cs-134 -

curies 7.62 E-05 6.71 E-05 Ag-110m curies 1.41 E-04 1.09 E-05 Cs-137 curies 3.81 E-05 1.33 E-04 Nb-95 curies 1.96 E-05 0 Co-58 curies 1.82 E-04 5.74 E-05 Mn-54 curies 4.16 E-04 3.37 E-04 Fe-59 curies 1.18 E-04 3.89 E-05 Zn-65 curies 0 1.36 E-05 Co-60 curies 1.05 E-03 1.26 E-03 ,

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RADIATION EFFLUENT REPORT July 1, 1978 thru December 31, 1978 LIQUID EFFLUENTS UNITS 3RD QUARTER 1978 4TH QUARTER 1978 Nuclides Released (Con't)

Unidentified Beta curies 5.19 E-03 8.63 E-05 Sr-89 curies <6.67 E-04 <5.53 E-04 Sr-90 curies <6.67 E-04 <5.53 E-04 Na-24 curies 1.34 E-06 1.28 E-06 I-1 31 curies 7.56 E-04 0 I. ETS  % 47.43 E00 22.57 E00 8

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SOLID RADI0 ACTIVE WASTE July thru September 1978

a. Solid radioactive waste

1. Total amount of solid radioactive ~ waste packaged (in cubic feet).

10,834.6 cubic feet

2. Total estimated gross radioactivity (in curies) of packaged material.

307.41 curies

3. Disposition of material including date and destination if shipped off-site.

Date Disposition 7/3/78- CHEM NUC - Barnwell, S.C.

7/3/78 CHEM NUC - Barnwell, S.C.

7/5/78 CHEM NUC - Barnwell, S.C. ..

7/7/78 CHEM NUC - Barnwell, S.C.

7/7/78 CHEM NUC - Barnwell, S.C.

7/26/78 CHEM NUC - Barnwell, S.C.

7/27/78 CHEM:NUC - Barnwell, S.C.

8/1/78 CHEM NUC - Barnwell, S.C.

8/7/78 CHEM NUC - Barnwell, S.C.

8/11/78 CHEM NUC - Barnwell, S.C.

8/11/78 CHEM NUC - Barnwell , S.C.

8/17/78 CHEM NUC - Barnwell, S.C.

8/17/78 CHEM NUC - Barnwell, S.C.

8/25/78 CHEM NUC - Barnwell, S.C.

8/29/78 CHEM NUC - Barnwell, S.C.

8/30/78 CHEM NUC - Barnwell, S.C.

9/9/78 CHEM NUC - Barnwell, S.C.

9/14/78 CHEM NUC - Barnwell, S.C.

9/14/78 CHEM NUC - Barnwell, S.C.

9/18/78 CHEM NUC - Barnwell, S.C.

9/21/78 CHEM NUC - Barnwell, S.C.

9/25/78 CHEM NUC - Barnwell, S.C.

9/26/78 CHEM NUC - Barnwell, S.C.

9/28/78 CHEM NUC - Barnwell, S.C.

SOLID RADI0 ACTIVE WASTE October thru December 1978

a. Solid radioactive waste

1. Total amount of solid radioactive waste packaged (in cubic feet).

10,029.2 cubic feet. .

2. Total estimated gross radioactivity (in curies) of packaged material.

89.81145 curies

3. Disposition of material including date and destination if shipped off-site.

Date Disposition 10/2/78 CHEM NUC - Barnwell, S.C.

10/5/78 CHEM NUC - Barnwell, S.C.

10/19/78 CHEM NUC - Barnwell, S.C.

10/31/78 CHEM NUC - Barnwell , S.C. ~

11/3/78 CHEM NUC - Barnwell, S.C.

11/3/78 CHEM NUC - Barnwell , S.C.

11/7/78 CHEM NUC - Barnwell , S.C.

11/8/78 CHEM NUC - Barnwell, S.C.

11/16/78 CHEM NUC - Barnwell, S.C.

11/21/78 CHEM NUC - Barnwell, S.C.

12/5/78 CHEM NUC - Barnwell, S.C.

12/12/78 CHEM NUC - Barnwell, S.C.

12/18/78 CHEM NUC - Barnwell, S.C.

12/19/78 CHEM NU ' - Barnwell, S.C.

CHEM NUC - Division of Chem Nuclear Services, Inc.

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