ML20248H128

Revised Effluent Release Rept for Jan-Dec 1997

ML20248H128
Person / Time
Site:	Oyster Creek
Issue date:	12/31/1997
From:	GENERAL PUBLIC UTILITIES CORP.
To:
Shared Package
ML20248H122	List: ML20248H121 ML20248H128
References
NUDOCS 9806080070
Download: ML20248H128 (7)

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(n EXECUTIVE

SUMMARY

. Oyster Creek Nuclear Station Efiluent and Off Site Dose Report l January 1,1997 through December 31,1997

[ Revised 04/23/98 This report summarizes the radioactive liquid and gaseous releases (effluents) from Oyster Creek and the calculated maximum hypothetical radiation exposure to the public resulting from these releases. This report covers the period of operation from January 1,1997 through December 31,1997.

Radiological releases from the plant are monitored by installed plant radiation monitors which survey the plant stack for gaseous releases to the atmosphere and outfall pipes for liquid discharges to the cooling water discharge canal. These monitors and associated sample analyses provide a means to accurately determine the type and quantities of radioactive materials being released to the environment.

, - Utilizing gaseous effluent data, the maximum hypothetical dose to any individual in the vicinity of the plant is

calculated. Similarly, liquid effluent data are used to calculate a maximum hypothetical dose to an individual from liquid eflhients for any shoreline exposure. Doses to the public from consumption of shellfish and fish withdrawn from the canal are also calculated.

Calculations of the maximum hypothetical dose to an individual from liquid and gaseous effluents are performed using a mathematical model which is based on the methods defined by the U.S. Nuclear Regulatory Commission.

The maximum hypothetical doses are conservative overestimates of the actual off site doses which are likely to occur. For example, the dose does not take into consideration the removal of radioactive material from the salt water by precipitation ofinsoluble salts, absorption onto sediment, or biological removal.

Dewatering is currently being performed in lieu of solidification.

Liquid discharges made during 1997 consisted of 0.01 curies of tritium from flushing of the fire service system.

Airborne discharges made during this same time period consisted of 135 curies of tritium,0.00184 curies of particulate,' O.0154 curies ofIodines, and 21.9 curies of noble gases. This includes 17 curies of tritium from the isolation condensers.-

The maximum hypothetical calculated organ dose to any individual due to gaseous efiluents was about 0.031 millirem to the thyroid. The maximum hypothetical calculated whole body dose to any individual due  ;

to gaseous effluents was 0.027 mrem. i The maximum hypothetical calculated organ dose to any individual due to liquid effluents was about 0.0000001 mrem to the liver. The maximum hypothetical calculated whole body dose to any individual due to liquid effluents was 0.0000001 mrem.

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EXECUTIVE

SUMMARY

Oyster Creek Nuclear Station Efiluent and OfTSite Dose Report Jan'uary 1,1997 through December 31,1997 Page 2 The total maximum hypothetical whole body dose of 0.027 mrem received by any individual from effluents from the Oyster Creek Nuclear Station for the reporting period is about 11,000 times lower than the dose the average individual in the Oyster Creek area received from natural background radiation including that

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from radon (300 mrem) during the same time period. Natural background radiation dose averages about 100 millirem whole body per year in the central New Jersey area. In addition, the average equivalent dose to the whole body from naturally occurring radon is about 200 millirem per year.

The maximum dose which could be received by a hypothetical individual from any effluent stream is about 0.3 percent of the annual guidelines established by the Nuclear Regulatory Commission.

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, OYSTER CREEK NUCLEAR GENERATING STATION FIRST QUARTER 1997 GASEOUS EFFLUENT GROUND-LEVEL RELEASES j C FISSION GASES QUANTITY

• l (ci )

Total Fission Gases Released: 0.00E+00 ci Average Rate of Release: 0.00E+00 uCi/sec IODINES QUANTITY (ci )

I131 1.10E-05 Total Iodines Released: 1.10E-05 ci Average Rate of Release: 1.41E-06 uCi/sec PARTICULATE QUANTITY (ci )

GROSSA 4.87E-07 Total Particulate Released: 4.87E-07 ci Average Rate of Release: 6.26E-08 uCi/sec RADIONUCLIDES QUANTITY (ci )

H3 1.23E+00 Avg. Rate of Release for H3: 1.58E-01 uCi/sec

• Quantity of noble gases derived from gross activity.

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, OYSTER CREEK NUCLEAR GENERATING STATION I SECOND QUARTER 1997 I

GASEOUS EFFLUENT GROUND-LEVEL RELEASES FISSION GASES QUANTITY *

(ci )

Total Fission Gases Released: 0.00E+00 ci Average Rate of Release: 0.00E+00 uCi/sec IODINES QUANTITY (ci )

l I133 2.14E-06 1

Total Iodines Released: 2.14E-06 ci Average Rate of Release: 2.72E-07 uCi/sec l

PARTICULATE QUANTITY (ci )

SR90 5.09E-07 GROSSA 4.51E-07 l

Total Particulate Released: 9.60E-07 ci Average Rate of Release: 1.22E-07 uCi/sec RADIONUCLIDES QUANTITY (ci )

H3 1.24E+00 Avg. Rate of Release for H3: 1.58E-01 uC1/sec

• Quantity of noble gases derived from gross activity.

, OYSTER CREEK NUCLEAR GENERATING STATION THIRD QUARTER 1997 GASEOUS EFFLUENT GROUND-LEVEL RELEASES FISSION GASES QUANTITY *

(ci )

Total Fission Gases Released: 0.00E+00 ci Average Rate of Release: 0.00E+00 uCi/sec l

IODINES QUANTITY (ci )

I131 6.70E-07 I133 5.23E-06 Total Iodines Released: 5.90E-06 ci Average Rate of Release: 7.43E-07 uCi/sec PARTICULATE QUANTITY (ci )

GROSSA 5.33E-07 Total Particulate Released: 5.33E-07 ci Average Rate of Release: 6.71E-08 uCi/sec RADIONUCLIDES QUANTITY (ci )

H3 1.09E+01 Avg. Rate of Release for H3: 1.38E+00 uCi/sec

• Quantity of noblo gases derived from gross' activity.

,.' OYSTER CREEK NUCLEAR GENERATING STATION FOURTH QUARTER 1997 GASEOUS EFFLUENT GROUND-LEVEL RELEASES FISSION GASES QUANTITY (ci )

Total Fission Gases Released: 0.00E+00 ci Average Rate of Release: 0.00E+00 uCi/sec IODINES QUANTITY (ci )

Total Iodines Released:- 0.00E+00.ci Average Rate of Release: 0.00E+00 uCi/sec J PARTICULATE QUANTITY (ci.)

GROSSA 8.33E-07 ,

Total Particulate Released: 8.33E-07 ci Average Rate of Release: '1.05E-07 uCi/sec )

RADIONUCLIDES QUANTITY (ci )

H3 3.89E+00 Avg. Rate of Release for H3: 4.89E-01 uCi/sec

• Quantity of noble gases derived from gross activity.

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