ML20138N390

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Semiannual Radioactive Effluent Release Rept,Supplemental Info,Jan-June 1985
ML20138N390
Person / Time
Site: Diablo Canyon Pacific Gas & Electric icon.png
Issue date: 06/30/1985
From:
PACIFIC GAS & ELECTRIC CO.
To:
Shared Package
ML20138N384 List:
References
NUDOCS 8511050177
Download: ML20138N390 (12)
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DIABLO CANYON POWER PLANT SEMIANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT SUPPLEMENTAL INFORMATION l

JANUARY 1 - JUNE 30,1985 4

l PGwE l DR D CK 275 R PDR

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PART TliREE RADIATION DOSE DUE TO GASEOUS AND LIQUID EFFLUENTS DC00A9 I _

RADIATION DOSES I. Radiation doses elue to radioactive liquid effluents The radiation do.e contributions due to releases of radioactive liquid effluents to the total body and each individual organ for the maximum exposed adult ha.ve been calculated in accordance with the methodology in the Offsite Dose Calculation Procedure. Dose contributions, listed in Table 7, show conformance with technical specification 4.11.1.2.

II. Radiation doses due to radioactive gaseous effluents The radiation dose contributions due to radioactive gaseous effluents at the site boundary for the land sectors have been calculated in accordance with the methodology in the Offsite Dose Calculation Procedure. The meteorology concurrent with the time of discharge were used in'these calculations. In addition to the site boundary doses, the dose to all age groups at the nearest residence within the low population zone for each of the land sectors and a five mile infant milk dose in each of the land sectors is included. Dose contributions, listed in Table 8, for the first and second quarters show conformance with technical specifications 4.11.2.2 and 4.11.2.3.

III. 40 CFR 190 Considerations The releases of radioactivity in liquid and gaseous effluents during 1985 resulted in doses that are small percentages of the technical specification limits as shown in Tables 9 and 10. This coupled with the fact that there are no other uranium fuel cycle sources within eight kilometers of the Diablo Canyon Nuclear Power Plant shows conformance with 40 CFR 190.

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t DIABLO CANYON NUCLEAR POWER PLANT SEMIAlEAL RADI0 ACTIVE EFFLUENT RELEASE REPORT 1985 TABLE 7 RADIATION DOSE DUE TO'TE RELEASE OF RADI0 ACTIVE LIQJID E:FLUENTS millirem ORGAN 1st Quarter 2nd Quarter Total Body 6.97 E-3 1.46 E - Bone ,

1.21 E-1 1.14 E-1 r Liver 1.26 E-2 1.31 E-2 Thyroid 1.99 E-5 1.06 E-3 Kidney 5.82 E-5 1.10 E-4 Lung 1.34 E-3 4.84 E-4 G. I. LLI 3.45 E-2 1.03 E-1 DC00A9 I DIABLO CANYON NUCLEAR RMER PLANT SEMIAMJAL RADI0 ACTIVE EFFLUENT RELEASE REPORT 1985

. TABLE 8 RADIATION DOSE DUE TO TE RELEASE OF.RADI0 ACTIVE GASE0US EFFLlENTS1  ;

FIRST GUARTER SECOND QUARTER SECTOR 2 DOSE SECTOR DOSE 1 Sita Boundary '

i' Noble Gas Gama air dose mrad ESES 1.23 E-4 ESE 3.00 E-3

, Beta air dose mrad ESE 4.90 E-5 ESE 5.77 E-3 j

I,P,T3 Teen * (Thyroid) . mrem NW 5.71 E-5 ESE 4.82 E-5

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R=sidence Noble Gas 1 Gamma air dose mrad ESE 2.21.E-5 ESE 9.51 E-4 Bata air dose mrad ESE 9.01 E-6 ESE 2.43 E-3 P,T I, Child 6 (Thyroid) mrem ESE 2.57 E-6 ESE 1.62 E-4 Five Mile Dairy ,

ant (Thyroid) mrem .ESE 2.00 E-5 ESE 1.31 E-4 i

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DIABLO CANYON MJCLEAR POWER PLANT SEMIAfMJAL RADI0 ACTIVE EFFLUENT RELEASE REPORT 1985 TABLE 8 (CONTINUED)

NOTES:

1. This represents the maximum dose of age groups, organs, and geographic locations.
2. The ocean sectors SSE, S, SSW, SW, WSW, W, and WNW, are not included.
3. Radiofodines, Radioactive Material in Particulate Form and Radionuclides Other Than Noble Gases With Half-lives Greater Than Eight Days.
4. The inhalation, ground plane and animal-meat pathways are included in this dose calculation.
5. This location is a vegetable farm located tnroughout the ESE sector starting at 2 miles.
6. The inhalation, ground plane, animal-meat and vegetable pathways are included for this location. An occupancy factor of 0.5 was used for the inhalation and ground plane pathways. The child age group had the highest calculated dose for this location.

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l DIABLO CANYON NUCLEAR POWER PLANT SEMIANNUAL RADI0 ACTIVE EFFLUENT ELEASE REPORT 1985 TABLE 9 PERCENT OF TE0iNICAL SPECIFICATION LIMITS FOR RADI0 ACTIVE LIQUID EFFLUENTS PERCENT ORGAN 1st Quarter 2nd Quarter Total Body 4.65 E-1 9.73 E-1 Bone 2.42 E-0 2.28 E-0 Liver 2.52 E-1 2.62 E-1 Thyroid 3.98 E-4 2.12 E-2 Kidney 1.16 E-3 2.20 E-3 Lung 2.68 E-2 9.68 E-3 G. I. LLI 6.90 E-1 2.06 E-0 4

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DIABLO CANYON NUCLEAR F0WER PLANT SEMIAMUAL RADI0 ACTIVE EFFLUENT RELEASE REPORT 1985 TABLE 10 ERCENT OF TECmICAL SPECIFICATION LIMITS FOR RADI0 ACTIVE GASEOUS EFFLUENTS FIRST QUARTER SECOND- QUARTER

% 0F  %&

SECTOR T.S. LIMIT SECTOR T.S. LIMIT Site Boundary Noble Gas Gasuna air dose ESE 2.46 E-3 ESE 6.00 E-2 Beta air dose ESE 4.90 E-4 ESE 5.77 E-2 n NW 7.61 E-4 ESE 6.47 E-4 ,

7 Residence Noble Gas Gansna air dose ESE 4.42 E-4 ESE 1.90 E-2 Beta air dose ESE 9.01 E-5 ESE 2.43 E-2 Id ESE 3.43 E-5 >

ESE 2.16 E-3 Five Mile Dairy ant ESE 2.67 E-4 ESE 1.75 E-3 DC00A9 I PGandE Lctt:r No.: DCL-85-328 ENCLOSURE 2 l

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, DIABLO CAN10N POWER PLANT SEMIANNUAL RADI0 ACTIVE EFFLUENT RELEASE REPORT 1985 TABLE 1 GASE0US EFFLUENTS - SUMMATION OF ALL RELEASES Units 1st 2nd Est. Total Quarter Quarter Error,%

A. Fission & activation gases

1. Total release Ci 3.95 E-1 6.21 E+1 5.0 El
2. Average release rate for period uCf/sec 5.08 E-2 7.90 E+0
3. Percent of technical specification limite  % 8.90 E-4 2.66 E-2 B. Iodines
1. Total fodine-131 Ci MDAl 1.54 E-5 2.3 El
2. Average release rate for period uCi/sec MDA 1.96 E-6
3. Percent of technical specification limit 2  % 0.0 1.75 E-2 l C. Perticalates
1. Particulates with half-lives > 8 days Ci MDA 5.54 E-10 2.3 El
2. Average release rate for period uCi/sec MDA 7.05 E-11
3. Percent of technical specification limit 2  % 0.0 5.58 E-8
4. Gross alpha radioactivity Ci MDA MDA D. Tritium _
1. Total release Ci 9.43 E-1 1.61 E-1 1.2 El
2. Average release rate for period pCi/sec 1.21 E-1 2.05 E-2
3. Percent of technical specification limit 2  % 3.30 E-4 5.63 E-5 NOTE:

1 MDA = the "a posteriori" minimum detectable activity (microcuries per unit mass or volume) '

2 Technical Specification 3.11.2.1 Limit CC00A9 I j - ...

, DIABLO CAWON POWER PLANT b

SEMIAMUAL RADI0 ACTIVE EFFLUENT RELEASE REPORT 1985 '

TABLE 2 l GASEOUS EFFLlENTS - GR0lND-LEVEL RELEASES IST QUARTER 2ND QUARTER CONTINUOUS BATCH CONTINUGU3 BATCH !

Nuclides Released Unit MODE MODE MODE MODE

1. Fission gases-krypton-85 Ci MDA MDA MDA MDA krypton-85m Ci MDA 1.76 E-4 MDA 1.37 E-2 krypton-87 Ci MDA MDA MDA MDA krypton-88 Ci MDA MDA MDA MDA xenon-131m Ci MDA MDA MDA 2.70 E-2 xenon-133 Ci MDA 2.76 E-1 3.08 E+1 2.93 E+1 xenon-133m Ci MDA MDA MDA 3.41 E-1 xenon-135 Ci MDA 8.88 E-3 5.59 E-2 3.06 E-1 xenon-135m Ci MDA MDA MDA MDA xenon-138 Ci MDA MDA MDA MDA argon-41' Ci MDA 1.10 E-1 5.26 E-1 7.30 E-1 TOTAL FOR PERIOD Ci 0 3.95 E-1 3.14 E+1 3.07 E+1
2. Iodines
iodine-131 Ci MDA 1.54 E-5 iodine-133 Ci MDA MDA iodine-135 Ci HDA MDA TOTAL FOR PERIOD Cf. . 0.0 1.54 E-5 DC00A9 I 10

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-DIABLO CANYON FOdER PLANT SEMIAMJAL RADI0 ACTIVE EFFLUENT RELEASE EPORT 1985 TABLE 2 (CONTINUED)

GASEDUS EFFLLENTS - GR0lMD-LEVEL ELEASES CONTINU0US MODE Nuclides Released . Unit 1st Quarter 2nd Quarter

3. Particulates cerium-141 Ci MDA MDA cerium-144 Ci MDA MDA cesium-134 Ci MDA MDA cesium-137 Ci MDA MDA cobalt-58 Ci MDA MDA cobalt-60 Ci MDA MDA iron-59 'Ci MDA MDA manganese-54 Ci MDA MDA molybdenum-991 Ci MDA MDA strontium-89 Ci MDA 5.54 E-10 strontium-901 Ci MDA MDA zinc-65 Ci MDA MDA TOTAL FOR PERIOD Ci 0 5.54 E-10 NOTES:

1 Includes Daughters DC00A9 I t

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