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1997 Annual Radioactive Effluent Release Rept, for TMI
	ML20217M719
Person / Time
Site:	Three Mile Island
Issue date:	12/31/1997
From:	; GENERAL PUBLIC UTILITIES CORP.
To:	;
Shared Package
ML20217M698	List: ML20217M694; ML20217M719; ML20217M725;
References
	NUDOCS 9805050095
	Download: ML20217M719 (37)
	v • d • e

l Attachment 1 - '

1997 Annual Radioactive Efiluent Releases Report for TMI 1920-98-20209 1

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l SUPPLEMFNTALINFORMATION FACI!JTY: TM1 UNIT 1 LJCENSE: DPR 50-289 I REOULATORY LIMITS . . . REFER TO 1MI OFTSITE DOSE cal.CULATION HANUAL A FISSION AND ACTIVATION GASES.

B. IODINES. -

C. PARTICULATES, HALF LIVES > 8 DAYS.

D. LIQUID EIRUENTS.

2. MAXIMUM EFFLUENT CONCENTRATIONS . . 17.N TIMES 10 CFR 20, ATTEND 1X B TABLE 2 PROVIDE T1E MAXIMUM EFFLUEhrf CONCENTRATIONS USED IN DETERMINING ALLOWABLE RELEASE RATES OR CONCENTRATIONS

. A FISSION AND ACTIVATIONGASES:

B IODINES' C. PARTICULATES,ilALF-LIVES > 8 DAYS.

D. LIQUID FIFLUENTS.

3. AVERAGE ENEROY

- PROVIDE Tile AVERAGE ENEROY (E-BAR)OF T}E RADIONUCLIDE MIXTURE IN RELEASES OF FISSION AND ACTIVATION OASES,IF APPLICABLE

. E-BAR BETA = 2 93E41 E-BAR OAMMA = 4 97E41 E-BAR BETA AND OAMMA = T90E-01 4 MEASUREMENTS AND APPROXIMATIONS OF TOTAL RADIOACTIVITY PROVIDE 111E METilODS USED TO AEASURE OR APPRr XIMATE Tt!E TOTAL RADIOACTIVTTY IN EFTLUENTS AND THE METHODS USED TO DETT,RMAN'E RADIONUCLIDE COMPOSITION.

A. FISSION AND ACTIVATION GASES HPOE SPECTROMETRY, LIQUID SCINTILLATION B IODINES HPOE SPECTROMETRY C. PARTICULATES ID'OE SPECTROME1RY, OAS FLOW PROPORTIONAL, BETA SPECTROMETRY D. LIQUID EFFLUENTS: HTOE SPECTROMETRY, LIQUID SCINTILLATION 5 BATCH kELEASES PROVIDE Tim FOLLOW 1NO INFORMATION RELATING TO BATCH RELEASES OF RADIOACTIVITY MATERIALS IN LIQUID AND GASEOUS EFFLUENTS.

A LfQUID (ALL TIMES IN MIN 11TES) QUARTERI OUARTER 2 QUARTER 3 QUARTER 4

1. NUMBER OF BATCH RELEASES $ 25 29 20

2. TOTAL TIME PERIOD FOR BAT CH RELEASES: 2815 8843 8388 6026 3 MAXIMUM TIME PERIOD FOR A BATCH RELEASE. 675 817 427 370 4 AVERAGE TIME PERIOD FOR BATCH RELEASES: 563 354 289 301 5 MINIMUM TIME PERIOD FOR A BATCH RELEASE. 490 100 10 255

6. AVERACE STREAM FLOW DURING PERIODS OF RELEASE OF El FLUENT INTO A FLOWING S TREAM. (CnD l 2 6uE+07l 1.41 E+07l 3 33E+N 106E+07 B OASEOUS (ALL TIMES IN MINtTIES)

1. NUMBER OF BATCH RELEASES 9 14 22 23 2 TOTAL TIME PERIOD FOR BATCH RELEASES. 142450 152830 365806 299513

3. MAXIMUM TIME PERIOD FOR A BATCH RELEASE 4400 4400 50'XX) 50300 4 AVERAGE TIME PERIOD FOR BATCH RELEASES 15828 10916 16628 13022 5 MINIMUH TIME PERIOD FOR A HATCH RELEASE' 5 0 81 17

6. ABNORMALRELEASES A LIQUID

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1. NUMBER OF EELEASES & 4 4 l

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Attachment 2 1997 Annual Radioactive Efiluent Releases Report for TMI

'1920-98-20209 e

I Solid Waste Shipped Offsite during 1997 for TMI-l ~

. (No Solid Waste was shipped from TMI-2 during 1997)

~

TABLE 3A EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 01/01/97 - 12/31/97 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS I I l A. Solid waste shipped off-site for burial or disposal (not irradiated fuel)

1. Type of waste UNIT 12 month EST. Total period Error %

a. Spent resins, filter sludges, m' N/A : N/A Evaporator bottoms, etc. Ci 3

b. Dry compressible waste, contaminated m' 58.9m 5%

equipment, etc. Ci .827Ci

c. Irradiated components, control m' N/A N/A rods, etc. Ci 3

d. Other(describe) m N/A N/A Ci

2. Estimate of major nuclide composition (by type of waste)

a. N/A %

b. Co 58 29.9 %

Cs 137 - 29.0 %

Ni 63 21.1 % ~

Fe 55 8.2%

Co 60 3.21%

c.N/A %

d.N/A %

3, Solid Waste Disposition Mode of Transportation Destination Number of Shipments See attached B. hradiated Fuel Shipments (Disposition) '

l Number of Shipments Mode of Transportation Destination l One (1) shipment Cask ( NLI-1/2 ) GE Nuclear-Pleasanton, CA ,

l I I

TABLE A.3.b l

No. of Shioments MODE OF TRANSPORTATION DESTINATION a One (1) shipment Tractor- Flatbed GTS- Duratek- Oak Ridge, TN '

I WASTE SHIPPED AS FOLLOWS i

TABLE A.1.b

]

Two (2) Steel Boxe as 1040 Ft' each - Noncompacted DAW i

?

l

Material shipped to Waste Processor for volume reduction. Shipment was Type A - LSA II i

i j

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Attachment 3

.1997 Annual Radioactive Effluent Releases Report for TMI 1920-98-20209 Summary of Unplanned Releases from the TMI Site During 1997 There were no unplanned releases from either TMI-1 or TMI-2 site to unrestricted areas during 1997.

W

.1 1

Attachment 4

1997 Annual Radioactive Effluent Releases Report for TMI 1920-98-20209 1 l

Changes to the Process Control Program and the

^ Offsite Dose Calculation Manual during 1997, 1 And a listing of new locations for dose calculations and/or environmental monitoring identified by the land use census

1. There were no changes made to Procedure 1104-281,;" Process Control Program," in' 1997.

)

j However, a Special Temporary Procedure (STP) was issuedo~ n April 23,1997 to solidify and

-l stabilize' waste phosphoric acid.: The STP provided instmetions to the operator in the sequence

- of operations necessary to safely and adequately neutralize and implement the Process Control Program for Stabilization and Solidification of TMI Phosphoric Acid waste using ~Aquaset II-H Solidification Media.

.i

2. The Offsite Dose Calculation Manual (ODCM) was modified two' times during 1997. These changes did not reduce the accuracy or reliability of dose calculations or setpoint determinations. The level of effluent control required by 10 CFR 20.1301,'40 CFR 190,10 CFR 50.36a, and Appendix I to 10 CFR 50 was not reduced and the~ accuracy or reliability of cfiluent, dose or setpoint calculations was not adversely impacted for the reasons stated-below. j Revision 15 of the ODCM was issued on January 17,1997. Revision 15 made the following changes to the ODCM-

1. Incorporated Figure 5-3 of the TMI Technical Specifications into the ODCM so that it would i still be available following implementation of TSCR #257 that would remove this figure from 1 the Technical Specifications. i l

2. Eliminated Section 4.0 of the ODCM Part II since this was not an ODCM effluent controls <

section pet NUREG 1301. The definition _of the site boundary formerly specified in this

.sectie was placed in the Part II, Section 1 definitions per the guidance of NUREG 1301.

Revision 16 of the ODCM was issued on June 30,1997. Revision 16 made the following changes to i the ODCM:

1, Changed the sampling and collection frequency for sediment and fish by eliminating the requirement that the interval not exceed 184 days. This change still requires that the samples be collected twice a year. As a result, it will not change the numbers of samples that are

l l

Attachment 4 L 1997 Annual Radioactive Effluent Releases Report forTMI 1920-98-20209 L L collected and analyzed. - The change enhances personnel safety by eliminating the need to

?

collect samples during adverse river conditions.:

1' s 2. Eliminated requirements for sampling and analysis of fmits and vegetables since no irrigation of by water is practiced _in the area proximal to TMI.- This practice _ is consistent L with the recommendations of USNRC Branch Technical Position (BTP) and NUREG 1301.

3. Deleted several stations for air particulate and iodine sampling, raw water sampling, l ,

environmental TLD sampling, aquatic sediment sampling, milk sampling, since the ODCM requirements for the TMINS REMP ccn be met or exceeded with the remaining sampling e stations?

4. ' Revised REMPlocation maps to reflect the above changes.

5. ' Added a bioaccumulation factor (per Reg Guide 1.109) for Ag-110m to permit liquid

- effluent (lose calculations for this isotope.

3. In accordance with Part III, Section 8.2 of the Three Mile Island NuclearfStation (TMINS) Offsite Dose Calculation Manual (ODCM), a land use census was conducted in 1997. The purpose of the census was to identify the location of the nearest milk animal, the nearest residence and the nearest garden of greater than 50 m2 .(500 fiz) producing broad leaf v9sation within a distance of 8km (5 miles) in each of the 16 meteorological sectors. The resuks of the 1997 land use census were included in the 1997 TMINS

- Annual Radiological Environmental Operating Report pursuant to Part IV, Section 1.2 of the TMINS ODCM. !

The 1997 land use census did not identify a location (s)'that yields a calculated dose or dose commitment (via the same exposure pathway) 20% greater than at a location from L which samples are currently being obtained in accordance with Table 8.1. Therefore, no new locations were required to be added to the 1997 TMINS Radiological Environmental

Monitoring Program (REMP).

Additionally, the 1997 land use census did not identify a location (s) that yields a calculated

. dose or dose commitment greater than those identified in the 1996 land use census.

However, during the preparation of the 1997 Annual Radioactive Efiluent Release Report, it was determined that a change identified in the 1991 land use census was not reported in b

L I

a

\.

. Attachment 4--

/ 1997 Annual Rhdioactihe Efiluent Releases Report for TMI 1920-98-20209 the Semi-annual Radioactive Efiluent Release Report for the second half of 1991. The change that was identified in 1991 is as follows:

The closest residence was changed from 1710 meters in the SE sector to 1140 meters in' the SE sector.

Following the 1991 land use census, the change was incorporated into the model that calculates doses based on TMINS effluents. As a result, the offsite doses reported in the -

Semi-annual and Annual Radioactive Efiluent Release Reports for the period of 1991 to the present are correct and no revisions to these reports are required. 'I l

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Attachment f 1997 Annual Radioactive Efiluent Releases Report for TMI -

1920-98-20209-Instrumentation not returned to Operable status within 30 days during 1997 l

There was no instmmentation not retumed to operable status within 30 days per the TMI ODCM Part 1, Sections 2.1.1.b and 2.1.2.h and Part.2, Section 2.1.2.b during 1997.

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, Attachment 6 :

(1997 Annual Radioactive Effluent ReleasesR' eport for TMI 1920-98-20209.'

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' Annual Summary of Hourly Meteorological Data for 1997

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TABLE K-1 !

Meteorological Data

1997.loint Frequency Tables l Hours at Each Wind Speed and Direction Period ofRecord: 97010100 97123123 Stability Class: A Sensor Height: 100 ft.-

Wind Speed (mph)

Winds

, From 1-3 4-7 8-12 13-18 19-24 >24 TOTAL N- 16 39' 4 3 0 0 62 -

L NNE 6 7 3 0 0 0 16 l NE 6 3 2 0 0 3 11 ENE 3 10 2 0 0 0 15 E 1 19 4 0 0 0 24 l ESE 3 9 6 2 0 0 20 SE 10 4 3 0 0 0 17 SSE 6 6 3 0 0 0 15 S. 4 12 3 1 0 0 20 SSW 10 48 31 '4 0 0 93 SW 14 58 22 3 0 0 97 l WSW 19 36 12 5 0 0 72 l W 23 22 17 2 1 0 65 WNW 31 43 30 5 0 0 109 NW 65 112 64 18 7 0 266 1

NNW 53 147 40 9 1 0 250 l l

! TOTAL 270 575 246 52 9 0 1152 I

)

I l

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' TABLE K-1

'(Continued)

Meteorological Data 1997 Joint Frequency Tables Hours at Each Wind Speed and Direction Period of Record: 97010100 - 97123123 Stability Class: B Sensor Height: 100 ft.

Wind Speed (mph)

Winds From - 1-3 4-7 8-12 13-18 19-24 >24 TOTAL N 2 7 0 0 0 0 9 NNE 1 5 0 0 0 0 6 NE O 3 1 0 0 0 4 ENE- 2 4 2 0 0 0 8 E 5 10 5 0 0 0 20 ESE 3 3 13 3 0 0 22 SE 5 5 3 2 0 0 15 SSE' 2 5 2 0 0 0 9 S .5 4 6 0 0 0 15 SSW 4 19 18 3 0 0 44 SW 5- 5 6- 0 0 0 16

-WSW 3 5 3 2 0 0 13 .

W 6 5 9 19 1 0 40 WNW 2 13 12 15 0 0 42 NW- 7 17 29 40 3 0 96 NNW 6 12 6 3 3 1 31 I TOTAL 58 122 115 87 7 1 390 l

TABLE K-1 (Continued)

Meteorological Data 1997 Joint Frequency Tables ;

Hours at Each Wind Speed and Direction Period of Record: 97010100 - 97123123 Stability Class: C

- Sensor Height: 100 ft.

1 Wind Speed (mph)

Winds From 1-3 4-7 8-12 13-18 19-24 >24 TOTAL- 1

-N 2 5 0 0 -0 0 7 NNE 1 2 1 0 0 0 4 NE 1 0 0 0 0 0 1 ENE 4 0' 8 1 0 0 13

)

E. 5 5 4 0 0 0 14 ESE 0 3 4 0 0 0 7 SE -2 2 3 0 0 0 7 SSE 2 3 0 0 'O O 5 4 S 1 2 3 0 0 0 6 SSW J- 10 3 0 0 0 14 'I SW 2 7 5 0 0 0 .14 WSW 1 1 1 1 0 0 4

)

W 0 3 10 7 1 0 21 WNW- 2 10 10 20 1 0 43 NW.. 7 15. 17 18 10 3 70 NNW 7 9 7 6 1 4 34 l

TOTAL 38 85 69 52 13 7 264 J 1

j I

L 1

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L TABLE K-1 (Continued) l Meteorological Data

~

{ 1997 Joint Frequency Tables

[ _ Hours at Each Wind Speed and Direction Period ofRecord: '97010100 - 97123123 l Stability Class: D Sensor Height: 100 ft.:

Wind Speed (mph)

Winds From 1-3 4-7 8-12 13-18 19-24 >24 TOTAL N 33 58 20 4 0 2 117 i NNE 20 35 3 0 0 0 58' NE 27 41 4 0 0 0 72 l

ENE 23 50 7 0 0 0 80 I E 30 82 63 2 0 0 177 ESE 32 53 101 5 0 0 191- )

SE 20 54 48 2 0 0 124 t

)

SSE 23 59 18 0 0 0 100

]

S 11 45- 46 7 0 0 109 SSW 10 54 36 12 0 1 113 l l SW 16 39 21 5 0 0 81

j. WSW 17 52 22 4 0 0 95 VV 20 81 100 42. 6 1 250 l

WNW '25 88 219 164 24 7 527 l.

I NW. 24 106 172 173 59 7 541 NNW 33 80 72 29 11 10 235 TOTAL 364 977 952 449 100 28 2870

f. ,

i l

i TABLE K-1 (Continued)

Meteorological Data 1997 Joint Frequency Tables Hours at Each Wind Speed and Direction Period ofRecord: 97010100 - 97123123 Stability Class: E -!

Sensor Height: 100 ft.

Wind Speed (mph)

Winds From 1-3 4-7 8-12 13-18 19-24 >24 TOTAL

,N- 42 97 14 0 0 0 -153 NNE 24 44 0 0 0 0 68 i

NE 41 46 3 'O 0 0 90' ENE 42 48 5 0 0 0 95 E 59 63 31 2 0 .0 155 ESE 56 37 31 1 0 0 125 SE 37. 32 13 0- 0 0 82 SSE 33 46 5 0 0 0 84 S 37 83 27 3 0 0 150 j SSW 30 100 45 19 1 0 195 SW 42 77 37 5 2 0 163 !

WSW 54 91 11 1 0 0 157 VV 51 128 35 18 4 1 237 WNW 58 83 73 43 4 1 262 ;

NW 54 73 65 42 10 0 244 .l NNW 46 88 25 11 4 1 175 c

TOTAL 706 1136 420 145 25 3 2435 .

I i

TABLE K-1 (Continued) .

'1 Meteorological Data f

4 1997 Joint Frequency Tables

]

Hours at Each Wind Speed and Direction Period of Record: 97010100 - 97123123 Stability Class: F I Sensor Height: 100 ft.

Wind Speed (mph)

]

j Wir l

Fre 1-3 4-7 8-12' 13 .19-24 >24 TOTAL l' .N 26' 39 1 0 0 0 66 NNE' 17 4 0- 0 0 0 21

-NE .13 3 0 0 0 0 16 l ENE 21 '9 0 0 0 0 30 ;

E 52 20 0 0 0 0 72 ESE 67 12 2 0 0 0 81 'I SE ~45 8 0 0 0 0 53 SSE 53 7 0 0 0 0 60 )

S 41 13 1 0 0 0 55

' SSW 35 29 1 0 0 0 65 -

SW 60 19 1 0 0 0 80 WSW 74 20 0 0 0 0 94 W 77 32 1 0 0 0 110 WNW 60. 21 2 1 0 0 84

NW 54 16 1 1 1 0 73 NNW 51 33 3 4 0 0 91 TOTAL 746 285 13 6 1 0 1051 l

L l

j

1 l

I TABLE K-1 (Continued)

Meteorological Data 1997 Joint Frequency Tables Hours at Each Wind Speed and Direction Perio'd of Record: 97010100 - 97123123 Stability Class: G Sensor Height: 100 ft.

Wind Speed (mph)

Winds From 'l-3 4-7 8-12 13-18 19-24 >24 TOTAL l Na 7 4 0 0 0 0 11 NNE 6 2 0 0 0 0 8 NE- 10 4 0 0 0 0 14 ENE. 9 4 0 0 0 0 13 E 16 8 0 0 0 0 24 ESE 24 6 1 0 0 0 31 l

SE 19 1 0 0 0 0 20 l SSE 19 2 0 0 0 0 21 S 17 1 0 0 0 0 18

!. SSW 31 17 1 0 0 0 49 l SW 47 9 0 0 0 0 56

!- WSW 33 6 0 0 0 0 39

.W 31 11 1 0 0 0 43 WNW 23 12 0 0 0 0 35 NW 14 7 1 0 0 0 22 NNW 15 11 0 0 0 0 26 TOTAL 321 105 4 0 0 0 430

TABLE K-1

~ (Continued)

Meteorological Data 1997 Joint Frequency Tables Hours at Each Wind Speed and Direction Period ofRecord: 97010100 - 97123123 Stability Class: ALL Sensor Height: 100 ft.

I Wind Speed (mph)

Winds From 1-3 .-4-7 8 13-18 19-24 >24 TOTAL j

-N 128 249 39 7 0 2 425

.NNE 75 99 7 0 0 0 181

'NE ,98 100 10 0 0 0 208 ENE 104 133 17 0 0 0 254 E 168 207 107 '4 0 0 486' ESE 185 123- 158 11 0 0 477 SE 138 106 70 4 0 0 318 SSE 138 -128 28 0 0 0 294 S 116 160 86 11 0 0 373 SSW 121 277 135 38 1 1 573 SYV 186 214 92 13 2 0 507 WSW 201 211 49 13 0 0 474 W 208 282 173 88 13 2 766 WNW 201 270 346 248 29 8 1102 NW 225 346 349 292 90 10 1312 NNW 211 380 153 62 20 16 842 TOTAL 2503 3285 1819 791 155 39 8592 HOURS OF MISSING / INVALID DATA : 168 l

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' Attachment 7 1997 Annual Radioactive Effluent Releases Report for TMI 1920-98-20209' l

l L

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Assessment of Radiation Doses Due to Radioactive Liquid and Gaseous Emuents Released from TMI during 1997 TMI-l ne attached table presents the maximum hypothetical doses to an individual and the general population resulting from' 1997 TMI-l releases of gaseous and liquid effluents. Pmvided below is a brief explanation of the table. !

I A. Liauid (Individual)

L Calculations were performed on the four age groups and eight organs recommended in Regulatory Guide 1.109. He pathways considenxl for TMI-1 were the consumption of drinking water and fish and standing on the shoreline influenced by TMI-1 emuents.

. The latter two pathways are considenxl to be the primary recreational activities associated with the Susquehanna River in the vicinity of TMI. He " critical receptor" or i Receptor 1 was that individual who 1) consumed Susquehanna River water from the -

i nearest downstmam drinking water supplier (Wrightsville Water Supply), 2) consumed I fish residing in the vicinity of the TMI-1 liquid discharge outfall and 3) occupied an area of shoreline influenced by the TMI-l liquid discharge.

For 1997, the calculated maximum whole body dose fmm TMI-l liquid effluents was 1.32E-1 mrem to an adult (line 1). The maximum organ dose was 1.88E-1 miem to the liver of a teen (line 2).'

B. Gaseous (Individual) l Here were six major pathways considered in the dose calculations for TMI-1 gaseous effluents. These were: (1) plume exposure (2) inhalation, consumption of; (3) cow milk, (4) vegetables and fmits, (5) meat, and (6) standing on contaminated gmund.

Real-time metcomlogy was used in all dose calculations for gaseous effluents.

Lines 3 and 4 present the maximum plume exposure at or beyond the site boundary.

. The notation of " air dose" is interpreted to mean that these doses are not to an individual, but are considered to be the maximum doses tlutt would have occurnxl at or beyond the site boundary. The table presents the distance in meters to the location in the affected sector (compass point) where the theoretical maximum plume exposures '

l

occurmd. He calculated maximum plume exposures would have been 3.23E4 mrad and 5.36E-4 mrad for gamma and beta, respectively.

Lines 5 and 6 present the doses which could actually be received by an individual fmm the noble gas effluents for 1997. De calculated maximum whole body dose received by anyone from noble gases would have been 1.74E-4 mrem and the maximum dose to the skin would have been 3.47E-4 mrem.

He maximum organ dose due to the release ofiodines, particulates and tritium fmm TMI-l in 1997 was 8.95E-3 mrem to the thyroid of a child residing 2150 meters fmm the site in the NNE sector (line 7). This dose again reflects the maximum exposed organ for the appmpriate age gmup.-

C. ' Liquid 'and Gaseous (Pooulation) -

Lines 8 - 11 present the person-mm doses resulting fmm 1997 TMI-l liquid and gaseous ,

effluents. These doses were summed over all pathways and the affected populations. l The person-rem doses fmm liquid effluents were based upon the population encompassed within the mgion fmm the TMI-l outfall extending down to the Chesapeake Bay (appmximately 5,000,000 people). The person-rem doses from gaseous effluents were 1 based upon the 1980 population and considenxi the population out to a distance of 50 miles around TMI (appmximately 2,200,000 people). Population doses were summed -l over all distances and sectors to give an aggregate dose. l The calculated maximum whole body dose to the affected population from TMI-l liquid effluents was 8.71E0 person-rem. The maximum critical organ population dose fmm liquid effluents was 8.75E0 person-rem to the liver. TMI-l gaseous effluents resulted in ,

a whole body population dose of 3.98E-1 person-rem and a maximum critical organ population dose of 3.98E-1 person-rem to the liver, thyroid, kidney, lung and GI tract.

For 1997, TMI-l liquid and gaseous effluents resulted in maximum hypothetical doses that were a small fraction of the quarterly and yearly 10 CFR 50 Appendix I dose limits.

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.1 The attached table presents the maximum hypothetical doses to an individual and the general population -

resulting fmm 1997 TMI-2 mieases of gaseous and' liquid effluents. Provided below is a brief explanation of the table. I A.' Liquid (Individual) -

.I Calculations were perfonned on the'four age groups and eight organs recommended in J Regulatory Guide 1.109. The pathways considered for TMI-2 were the. consumption of )

drinking water and fish and standing on the shoreline influenced by TMI-2 effluents.

l 'Ihe latter~ two pathways are considered to be the ' primary recreational activities associated with the Susquehanna River in the vicinity of TMI. The " critical meeptor" or Receptor 1 was that individual who 1). consumed Susquehanna River water from the ,

nearest downstmam drinking water supplier (Wrightsville Water Supply), 2) consumed. l fish residing in the vicinity of the TMI-2 liquid discharge outfall and 3) occupied an area l of shomline influenced by the TMI-2 liquid discharge.

For 1997, the calculated maximum whole body dose fmm TMI-2 liquid effluents was 4.92E-4 mrem to an adult (line 1). The maximum organ dose was 8.07E-4 miem to the bone of a child (line 2).

B. Gaseous (Individuan There were six major pathways considenxi in the dose calculations for TMI-2 gaseous effluents. These were: (1) plume exposure (2) inhalation, coasumption of; (3) cow I

milk, (4) vegetables and fruits, (5) meat, and (6) standing on contaminated gmund.

l Real-time meteorology was used in all dose calculations for gaseous effluents.

l Since thue were no noble gases released from TMI-2 during 1997, the gamma and beta l air doses (lines 3 and 4, respectively) wem zem.

The maximum organ dose due to the release of particulates and tritium fmm TMI-2 in 1997 was 1.49E-4 mrem to the liver of a child residing 2000 meters fmm the site in the l- SE sector (line 5).

C. Liould and Gaseous (Pooulation)

Lines 6 - 9 present the person-rem doses msulting from 1997 TMI-2 liquid and gaseous L effluents. These doses were summed over all pathways and the affected populations.

l. The person-rem doses fmm liquid effluents were based upon the population encompassed within the region fmm the TMI-2 outfall extending down to the Chesapeake Bay (approximately 5,000,000 people). The person-rem doses from gaseous effluents were based upon the 1980 population and considemd the population out to a distance of 50 miles amund TMI (approximately 2,200,000 people). Population doses were summed over all distances and sectors to give an aggmgate dose.

' The calculated maximum whole body dose to the affected population fmm TMI-2 liquid

. effluents was 1.12Pe3 person-mm. The maximum critical organ population dose fmm liquid effluents was 4.24E-3 person-mm to the bone. TMI-2 gaseous effluents msuhed in a whole body 'Jopulation dose of 7.10E-3 person-rem and a maximum critical organ population dose of 7. 20E-3 person-mm to the liver.

For 1997, TMI-2 liquid and gaseous effluents msulted in maximum hypothetical doses that wem a small fraction of the quatterly and yearly 10 CFR 50 Appendix I dose limits.

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i Attachment 8 l_ _1997 Annual Radioactive Effluent Releases Report for TMI l 1920-98-20209 l

l l

l Assessment of Radiation Doses from Liquid and Gaseous Emuents Reisases to Members of i l the Public within the TMI Site Boundaries dairing 1997 i

l' The Offsite Dose Calculation Manual requires an assessment of the radiation doses from radioactive

liquid and gaseous effluents to members of public due to their activities inside the site boundary during l the reporting period. The public did not have unrestricted access to the TMI site during 1997.

Therefore no assessment of this dose is applicable.

l i

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e Attachment 9 1997 Annual Radioactive Effluent Releases Report for TM1 1920-98-20209 Assessment of Radiation Dose to Most Likely Exposed Real Individual per 40 CFR 190 Dose calculations were performed to demonstrate compliance with 40 CFR 190 (ODCM Part IV Section 2.10). Gaseous and liquid effluents released fmm TMI-1 and TMI-2 in 1997 would have msulted in maximum individual doses (regardless of age gmup) of 2.36E-2 miem to the thyroid and 1.98E-1 miem to any other organ including the whole body. The direct radiation component was' determined using the highest 1997 fenceline exposure rate as measured by a TLD and subtracting from it the lowest TLD exposure rate. 'Ihis method more accurately determines the exposure fmm TMINS by subtracting out the exposute rate fmm other sourees of radiation in the environment. Based on the maximum exposure rate of 6.72E0 mR/standani month, a person residing at the fenceline for 67 hours7.75463e-4 days <br />0.0186 hours <br />1.107804e-4 weeks <br />2.54935e-5 months <br /> (shoreline exposure fmm Reg. Guide 1.109) would have received an exposure of 6.17E-1 mR. Based on the lowest exposure rate of 2.88E0 mR/ standard month and converting it by the same method gives a backgmund exposme of 2.64E-1 mR.

Therefore, the net exposure fmm direct radiation fmm TMI is 3.53E-1 mR. Combining the direct radiation exposure (assumed to be equal to dose) with the maximum organ doses fmm liquid and gaseous releases, the maximum potential (total) dose would have been 3.77E-1 mrem to the thymid and 5.51E-1 miem to any other organ. Both doses are well below the limits specified in 40 CFR 190.

l

' Attachment 10 1997 Annual Radioactive Emuent Releases Report for TMI 1920-98-20209 Deviation from the ODCM Effluent Sampling and Analysis Regime during 1997 There were no deviations from the emuent sampling and analysis regime specified in the TMI Offsite Dose Calculation Manual during 1997.

/

)

l 1997 Annual Radioactive Efiluent Releases Report for TMI 1920-98-20209-1 I

1 l

TMI Offsite Dose Calculation Manual, Revision 16 6610-PLN-4200.01 (Revisions 15 and 16 were implemented on January 17,1997 and June 30,1997 respectively) l 1

l i

i l

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