ML20206C073

1998 Annual Radioactive Effluent Releases Rept, for TMI-1 & TMI-2

ML20206C073
Person / Time
Site:	Three Mile Island
Issue date:	12/31/1998
From:	GENERAL PUBLIC UTILITIES CORP.
To:
Shared Package
ML20206C055	List: ML20206C052 ML20206C073 ML20206C091
References
NUDOCS 9904300174
Download: ML20206C073 (37)

Text

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1920-99-20177  !

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BUPPIEM ENTAL INFORMATION FACilJTYr TMlUNITl IJCENSE: DPR $0-289 l

1. REGULATOR Y LIMITS . . - REFER TO 11f1 OITSITE DOSE CALCULATION MANU AL A FISSION AND ACTIVATION GASES.

B IODINES' C. PARTICULATES. l{ALF. LIVES > B DAYS-D LIQUIDEFM.UENTS 2 MAXLNfUM EFFLUENT CONCENTRATIONS ~ . TEN TIMES 10 C1120. APPENDIX B TABLE 2 PROVIDE Tile MAXIMUM LFFLUENT CONCENTH ATIONS USED IN DETERMINING ALLOWA14LE RELEASE RATES OR CONCENTRATIONS.

A FISSION AND ACTIVATION 0ASES B IODINES C PARTICULATES, HALF-LIVES > 8 DAYS:

D. LIQUID EFFWENTS 3 AVERAGEENEROY PROVIDE Ti(E AVERAGE ENERGY (E-B AR) OF THE RADIONUCLIDE MIXTURE IN RELEASES OF FISSION AND ACTIVATION GASES,IF APPLICABLE E BAR BETA

• 190E41 E BAR OAMMA

• I 61E-01 E-BAR DETA AND OAMMA = 3 SIE41 4 MEASUREMENTS AND APPROXIMATIONS OFTOTAL RADIOACTIVITY PROVIDE THE METilODS USED TO MEASURE OR APPROXIMATE THE TOTAL RADIOACTIVITY IN EllLUENTS AND THE METHODS USED TO DFTERMINE RADIONUCLIDE COMPOSTTION.

A FISSION AND ACTIVATION GASES HPGE SPECTROMETRY, LIQUID SCINTILLATION B IODINES. IIPOE SPECTROMETRY C. PARTICULATES IIPOE SPECTROMETRY, GAS FLOW PROPORTIONAL, BETA SPECTROME11tY D LIQUIDEFFLUENTS, HPGE SPECTROMETRY. LIQUID SCINTILLATION

5. BATCll RELEASES PROVIDE THE FOLLOWING INFORMATION RELATING TO BATCH RELE ASES OF RADIOACT!YlTY MA1ERIALS IN LIQUID AND OASEOUS EITLUENTS l A LIQUID (ALLTIMESINMINUTES) QUARTER I QUARTER 2 QU/ATLR 3 QUAkTER 4 I NUMBER OF BA TCil kELEASES 13 0 il il J 210TAL TIMh PERIOD FOR B ATCll RELEASES 36U 0 , 3193 3722

.l. MAXIMUM TIMb PERIOD FOR A BATell RELEASh 325 0 395 425 4 AVERAGE TIME PEklOD FOR HATCll khLLASES. 280 0 290 335 3 MINWUM 1IME PLRIOD FOR A HATCil RELhASE. 253 0 19% 288 6 AVERAGE STREAM FLOW DURING PERIODS OF RELEASE OF EITLUEKI INTO A FLOWING STREAM (CFM) l 4 79h+0t>l 3 33h+0t l 606h+05 3$9E+05 B OASEOUS (ALL TIMES IN MINtTTES) i NUMBER OF HATCilkh1 EASES l 11  !! 14 13 2 TOTAL TIME PERIOD FOR 14Alrtl RELEASES I 176858 21 $476 262342 269455 1 MAXIMUM TIME PERIOD FOR A BATCil RELEASE 44600 44600 44600 $0600 4 AVER AGE TIME PERIOD FOR BATCH RELEASLS 16075 19589 15739 20727 3 MINIMUM TIME PhklOD FOR A 14ATCil RELhASE 146 9 662 283 6 ABNORMAL RELEASES A LIQUID l i NUM14ER OF RELEASES -u- 0 0- 4 l 2.1O'l AL ACTIVITY RELEASED (CUklLS) NA N<A NA NA B Gash 0US I NUMBLR OF RELEASES 0 0 o 0-2 TOTAL. ACTIVITY RELEASED (CURIES) N. A N. A N-A N< A l

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Attachment 2

> 1998 Annual Radioactive Effluent Releases Report for TMI 1920-99-20177 Solid Waste Shipped Offsite during 1998 i

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TABLE 3A EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SOLID WASTE AND IRRADIATED FUEL SHIPMENTS l l l A. Solid waste shipped ofi-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' 192.6 m' 5%

Evaporator bottoms, etc. Ci 13.14Ci l b. Dry compressible waste, m' 448.4m' 5%

l contaminated equipment, etc. Ci 1. lCi

c. Irradiated components, control m' N/A N/A l rods, etc. Ci l d. Other(describe): Solidified Liquid m' 19.1 m' 5%

Ci .08Ci

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

a. H3 42.4 %

Csl37 44.0 %

Ni63 5.3%

Cs 134 3.01%

b. Csl37 29.7 %

f CoS8 29.4 %

' Ni63 20.7 %

Fe55 8.1%

I Co60 3.2%

l c. N/A'  %

! d. Co60 - 95.7 %

Cs137 - 2.6%

CoS8 .84%

Cr51 .46%

3. Solid Waste Disposition Mode of Transportation Destination i Number of Shipments l See attached for this information j B. Irradiated Fuel Shipments (Disposition)  !

l  !

Number of Shipments Mode of Transportation Destination l None  !

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WASTE SillPPED AS FOLLOWS TABI E A.I.a l

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l Eight (8) Steel Liners at 160 Ft' each (evaporator bottoms) l Seven (7) Steel Boxes at 44 Ft'each (filter cake) j Five (5) Poly Liners at 57.5 Ft'each (sludge) l Three (3) Steel Boxes at 675 Ft' ench (filter cake) i Two (2) Steel Boxes at 500 Ft'ench (filter cake)

One (1) Steel Box at 550 Ft'(filter cake) l Two (2) Steel Liners at 191 Ft' each (powdex resin) l Two (2) Steel Liners at 199 Ft'ench (powdex resin)

One (1) Steel Liner at 201 Ft' (powdex resin) l One (1) Steel Liner at 196 Ft'(powdex resin) I One (1) Steel Liner at 175 Ft'(pawdex resin)

TABLE A.I.h Eighty Six (86) Steel Boxes at 92 Ft' each (uncompacted DAW) l T! irteen (13) Steel Boxes at 44 Ft'each (uncompacted DAW) l Seven (7) Steel Boxes at 1940 Ft'ench (uncompacted DAW)

! TABLE A.1.d Ninety (90) Steel Drums at 7.5 Ft'ench (solidified liquid) (solidified wiGi Aquaset 11-11) 1 l

I

! l NOTE: All shipments were Type A - LSA Il '

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r-TABl.E A.3.a )j No. of Shipments MODE OF TRANSPORTATION DESTINATION Eleven (1I) shipments Tractor- Flatbed ATG - Richland, WA Thirteen (13) shipments Tractor- Overpack GTS Duratek- Oak Ridge, TN l

TABl.E A.3.b No of Shioments MODE OF TRANSPORTATION DESTINATION Eleven (1I) shipments Tractor- Flatbed ATG - Richland, WA I

i l

TA Bl.E A.3.d I No. of Siiiuments MODE OF TRANSPORTATION DESTINATION l

Three (3) shipments Tractor- Closed Van ATG - Richland, WA l

l

rc Attachment 3 1998 Annual Radioactive Efiluent Releases Report for TMI 1920-99-20177 Summary of Unplanned Releases from the TMI Site During 1998 l

There were no unplanned releases to unrestricted areas from either the TMI-l or TMI-2 site during 1998.

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m Attachment 4 1998 Annual Radioactive Emuent Releases Report for TMI l 1920-99-20177 j Changes to the Process Control Program and the Offsite Dose Calculation Manual during 1998 And a listing of new locations for dose calculations and/or environmental monitoring identified by theland use census

1. Changes to the Process Control Program l

There were no changes made to Process Control Program (PCP) documents in 1998.

2. Changes to the Offsite Dose Calculation Manual during 1998 The OfTsite Dose Calculation Manual (ODCM) was modified once during 1998. These changes did not reduce the accuracy or reliability of dose calculations or setpoint determinations. The level of emuent control required by 10 CFR 20.1301,40 CFR 190,10 CFR 50.36a, and Appendix 1 to 10 CFR 50 was not reduced and the accuracy or reliability of emuent, dose or setpoint calculations was not adversely impacted for the reasons stated below.

Revision 17 of the ODCM was issued on September 1,1998. Revision 17 made the following changes to the ODCM:

i

1. Incorporated the highest sector annual average X/Q's and D/Q's for the site boundary and the critical receptor into the ODCM. Previously the site boundary X/Q's were in the ODCM for the calculation ofradiation monitor setpoints. The D/Q's were added to better control these i values. These values provide conservative offsite dose estimates to assure that ofTsite doses remain below ODCM limits as releases are made during the year. At the end of the year, release data is coupled with real-time meteorology to produce the doses published in the Armual Emuent Report. Inclusion of these parameters in the ODCM ensures they are properly documented and controlled.

2. Corrected a typographical error that referenced the wrong ODCM control in the description of the content of the Annual Emuent Report.

3. Specified NUREG 0172 as an additional source of dose conversion factors in the development

ofRi values.

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3. A listing of new locations for dose calculations and/or environmental monitoring identified by the land use census Based on the results of the 1998 Three Mile Island Nuclear Station land use census, there

! were no locations identified that yielded a calculated dose or dose commitment greater than l the values currently being calculated in ODCM Pan 1 Surveillance 3.2.2.3.1. Additionally, l there were no locations identified that yielded a calculated dose or dose commitment 20%

greater than at a location from which samples are currently being obtained in accordance with ODCM Part 111 Table 1.

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e-Attachment 5 1998 Annual Radioactive Efiluent Releases Report for TM1 1920-99-20177 I

Instrumentation not returned to Operable status within 30 days during 1998 There was no instrumentation not returned to operable status within 30 days per the TMI ODCM Part 1, Sections 2.1.1.b and 2.1.2.b and Part 2, Section 2.1.2.b during 1998.

I l

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c Attachment 6

! 1998 Annual Radioactive EfYluent Releases Repon for TMI 1920-99-20177 t

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I Annual Susninary of Hourly Meteorological Data for 1998 i.

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TMINS Meteer-i$el Data 1998 Joint Frequency Tables Hours at Each Wind Speed and Direction Peiiod of Record: 98010100 - 98123123 Stability Class: A SensorHeight: 100 ft, Wind Speed (mph)

Winds From 1-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 19 26 7 2 0 0 54 NNE 9 5 1 0 0 0 15 NE 8 11 1 0 0 0 20 ENE 8 12 4 0 0 0 24 E 10 20 3 0 0 0 33 ESE 7 29 15 1 0 0 52 SE 8 17 6 0 0 0 31 SSE 8 9 0 0 0 0 17 S 15 14 5 1 0 0 35 SSW 11 59 40 8 0 0 118 W 23 67 16 0 0 0 106 WSW 26 30 14 0 0 0 70 W 22 23 14 0 0 0 59 WNW 43 68 57 8 0 1 177 NW 73 120 130 22 3 0 348 NNW 75 120 57 9 2 0 263 TOTAL 365 630 370 51 5 1 1422

TMINS Meteorological Data 1998 Joint Frequency Tables (Continued)

Hours at Each Wind Speed and Direction Period of Recorti: 98010100 - 98123123 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 1 4 0 2 0 0 7 NNE 3 2 1 0 0 0 6 NE 2 5 1 0 0 0 8 ENE 2 2 2 0 0 0 6 E 3 3 1 0 0 0 7 ESE 1 11 6 0 0 0 18 SE 1 4 1 0 0 0 6 SSE 2 4 0 0 0 0 6 S 1 14 4 1 0 0 20 SSYV 1 13 12 3 0 0 29 SW 2 7 7 1 0 0 17 WSW 2 3 3 1 0 0 9 W 2 7 6 4 0 0 19 WNW 8 14 16 8 2 0 48 NW 6 20 30 16 3 1 76 NNW 7 8 12 10 3 0 40 TOTAL 44 121 102 46 8 1 322

7 i

I (TMINS Meteorological Data 1998 Joint Frequency Tables Continued)

Period of Record: 98010100 - 98123123 Stability Class: C Sensor Height: 100 ft.

1 Wind Speed (mph) I Winds i From 1-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 5 5 0 3 0 0 13 NNE O O 0 0 0 0 0 l

.NE 1 4 0 0 0 0 5 l

ENE 2 2 0 0 0 0 4 E O 2 1 0 1 0 4 ESE 3 4 9 0 0 0 16 SE 1 9 5 0 0 0 15 SSE 4 3 3 0 0 0 10- )

S 0 6 2 1 0 0 9 SSW 0 10 4 1 0 0 15

, SW l 8 2 0 0 0 11 WSW 2 2 1 0 0 0 5 W 0 2 6 1 1 0 10 WNW. 3 4 5 5 0 0 17 NW 3 8 18 7 2 0 38 NNW 3 6 8 4 0 0 21 i

TOTAL 28 75 64 22 4 0 193 l'

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! TMINS Meteomlogical Data 199( !!oint Frequency Tables (Continued) i Hours at Each Wind Speed and Direction Period of Reconi: 98010100 - 98123123 Stability Class: D Sensor Height: 100 ft.

Wind Speed (mph)

Winds From 1-3 4-7 8 13-18 19-24 > 24 TOTAL N 24 57 22 2 0 0 105 NNE 16 32 4 0 0 0 52 NE 26 35 13 1 0 0 75 ENE 21 64 14 0 0 0 99 E 19 85 49 6 0 0 159 1

ESE 18 82 74 1 0 0 175 SF 16 36 36 0 0 0 88 SSE 12 49 6 0 0 0 67 S 20 72 35 5 0 0 132 SSW 10 57 56 13 0 0 136 SW 22 44 19 3 0 0 88 WSW 17 40 11 3 0 0 71 W 20 52 41 10 0 0 123 WNW 24 86 108 70 7 1 296 NW 35 104 165 88 32 4 428 NNW 32 62 63 14 1 0 172 l

TOTAL 332 957 716 216 40 5 2266 l

r.

! TMB.S Meteorological Data 1998 Joint Frequency Tables (Continued)

Hours at Each Wind Speed and Direction Period of Record: 98010100 - 98123123 Stability Class: E Sensor Height: 100 ft.

Wind Speed (mph) l Winds .

From 1-3 4-7 8-12 13-18 19-24 > 24 TOTAL I N 64 112 18 1 0 0 195 NNE 52 38 14 2 0 0 106 1 NE 36 46 20 3 0 0 105 ENE 53 52 9 1 0 0 115 E 51 72 25 14 1 0 163 ESE 55 68 35 6 2 0 166 i

SE 37 40 7 1 0 0 85 SSE 30 62 3 0 0 0 95

S 26- 81 45 11 0 0 163 SSW 37 112 49 16 2 0 216 SW 54 87 23 3 0 0 167 -

WSW 47 84 15 0 0 0 146 W 70 138 37 5 0 0 250 WNW 70 140 81 14 1 0 306 NW 54 91 82 17 6 3 253 NNW 65 112 38 11 0 0 226 TOTAL 801 1335 501 105 12 3 2757 l

i i

1 TMINS Meteorological Data 1998 Joint Frequency Tables (Continued)

Hours at Each Wind Speed and Direction Period of Reand: 98010100 - 98123123 Stability Class: F Sensor Height: 100 ft.

Wind Speed (mph)

Winds From 1-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 42 42 0 0 0 0 84 NNE 33 8 0 0 0 0 41 NE 21 6 0 0 0 0 27 ENE 27 12 0 0 0 0 39 E 56 21 0 0 0 0 77 ESE 57 14 2 0 0 0 73 SE 36 3 1 0 0 0 40 SSE 29 5 0 0 0 0 34 S 36 8 4 0 0 0 48 SSW 42 33 3 2 0 0 80 SW 53 33 3 0 0 0 89 WSW 71 31 0 0 0 0 102 W 79 43 2 0 0 0 124 WNW 69 17 1 0 0 0 87 NW 73 17 5 0 0 0 95 NNW 52 53 1 0 0 0 106 TOTAL 776 346 22 2 0 0 1146 l

n

TMINS Meteorological Data 1998 Joint Frequency Tables (Continued)

Hours at Each Wind Speed and Direction Period of Record: 98310100 - 98123123 Stability Class: G Sensor Height: 100 ft.-

Wind Speed (mph)

Winds Fmm 1-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 19 13 0 0 0 0 32 NNE 11 0 0 0 0 0 11 NE 10 0 0 0 0 0 10 ENE 21 2 0 0 0 0 23 E 14 9 0 0 0 0 23 ESE 37 4 0 0 0 0 41 SE 23 0 0 0 0 0 23 SSE 25 1 0 0 0 0 26 S 17 3 1 0 0 0 21 SSW 33 26 0 0 0 0 59 SVV 39 18 0 0 0 0 57 WSW 39 12 1 0 0 0 52 W 54 17 1 0 0 0 72 WNW 42 17 0 0 0 0 59 NW 36 12 0 0 0 0 48 NNW 26 29 0 0 0 0 55 TOTAL 446 163 3 0 0 0 612

TMINS Meteornlogical Data 1998 Joint Frequency Tables (Continued)

Hours at Each Wind Speed and Direction Period of Record: 98010100 - 98123123 Stability Class: ALL Sensor Height: 100 ft.

Wind Speed (mph)

Winds From 1-3 4-7 8-12 13-18 19-24 > 24 TOTAL N 174 259 47 10 0 0 490 NNE 124 85 20 2 0 0 231 NE 104 107 35 4 0 0 250 ENE 134 146 29 1 0 0 310 E 153 212 79 20 2 0 466 ESE 178 212 141 8 2 0 541 SE 122 109 56 1 0 0 288 SSE 110 133 12 0 0 0 255 S 115 198 96 19 0 0 428 SSVV 134 310 164 43 2 0 653 SYV 194 264 70 7 0 0 535

\VSVV 204 202 45 4 0 0 455 YV 247 282 107 20 1 0 657 WNW 259 346 268 105 10 2 990 NW 280 372 /30 150 46 8 1286 NNW 260 390 179 48 6 0 883 TOTAL

• 2792 3627 1778 442 69 10 8718 HOURS OF MISSING / INVALID DATA : 42 i

m Attachment 7 1998 Annual Radioactive Emuent Releases Report for TMI 1920-99-20177 Assessment of Radiation Doses Due to Radioactive Liquid and Gaseous Emuents Released from TMI during 1998 TMI-l The attached table presents the maximum hypothetical doses to an individual and the general population resulting from 1998 TMI-l releases ofgaseous and liquid emuents. Provided below is a brief explanation of the table.

A. Liquid (Individual)

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

The latter two pathways are considered to be the primary recreational activities associated with the Susquehanna River in the vicinity ofTMI. The " critical receptor" or Receptor I was that individual who 1) consumed Susquehanna River water from the nearest downstream drinking water supplier (Wrightsville Water Supply),2) consumed fish residing in the vicinity of the TMI-1 liquid discharge outfall and 3) occupied an area of shoreline influenced by the TMl-1 liquid discharge.

For 1998, the calculated maximum whole body dose from TMI-1 liquid emuents was 3.25E-2 mrem to an adult (line 1). The maximum organ dose was 4 52E-2 mrem to the liver of an adult (line 2).

B. Daseous (Individu_al)a There were six major pathways considered in the dose calculations for TMI-l gaseous emuents. These were: (1) plume exposure (2) inhalation, consumption of; (3) cow milk, (4) vegetables and fruits, (5) meat, and (6) standing on contaminated ground. Real-time meteorology was used in all dose calculations for gaseous emuents.

Lines 3 and 4 present the maximum ph:me 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 that would have occurred 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 occurred. The calculated maximum plume exposures would have been 1.56E-4 mrad and 2.13E-4 mrad for gamma and beta, respectively.

Lines 5 and 6 present the doses which could actually be received by an individual from the noble gas effluents for 1998. The calculated maximum whole body dose received by anyone from noble gases would have been 5.33E-5 mrem and the maximum dose to the skin would have been 1.02E-4 mrem.

The maximum organ dose due to the release ofiodines, pa,1iculates and tritium from TMI-l in 1998 was 9.66E-3 mrem to the thyroid of a child residing 2000 meters from the site in the SE sector (line 7). This dose again reflects the maximum exposed organ for the appropriate age group. I C. Liquid and Gaseous (Populatioll)

Lines 8 - 11 present the person-rem doses resulting from 1998 TMI-l liquid and gaseous emuents. These doses were summed over all pathways and the affected populations.

The person-rem doses from liquid emuents were based upon the population encompassed within the region from the TMI-l outfall extending down to the Chesapeake Bay (approximately 5,000,000 people). The person-rem doses from gaseous emuents were based upon the 1990 population and considered the population out to a

. distance of 50 miles around TMI (approximately 2,200,000 people). Population doses were summed over all distances and sectors to give an aggregate dose.

The calculated maximum whole body dose to the affected population from TMl-1 liquid emuents was 7.31E0 person-rem. The maximum critical organ population dose from liquid emuents was 7.32E0 person-rem to the liver. TMI-I gaseous emuents resulted in L

a whole body population dose of 4.50E-1 person-rem and a maximum critical organ population dose of4.60E-1 person rem to the thyroid.

For 1998, TMI-l liquid and gaseous emuents resulted in maximum hypothetical doses that were a small fraction of the quarterly and yearly 10 CFR 50 Appendix I dose limits. l l

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TMI-2 The attached table presents the maximum hypothetical doses to an individual and the general population resulting from 1998 TMI-2 releases of gaseous and liquid emuents. Provided below is a brief explanation of the table.

A. Liquid (Individual)

Calculations were performed on the four age groups and eight organs recommended in 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 emuents.

. The latter two pathways are considered to be the primary recreational activities associated with the Susquehanna River in the vicinity of TMI. The " critical receptor" or Receptor I was that individual who 1) consumed Susquehanna River water from the nearest downstream drinking water supplier (Wrightsville Water Supply), 2) consumed fish residing in the vicinity of the TMI-2 liquid discharge outfall and 3) occupied an area of shoreline influenced by the TMI-2 liquid discharge.

For 1998, the calculated maximum whole body dose from TMI-2 liquid emuents was 8.30E-4 mrem to an adult (line 1). The maximum organ dose was 1.31E-3 mrem to the liver of a teen (line 2).

B. Gaseous (IndividuaD There were six major pathways considered in the dose calculations for TMI-2 gaseous ]

emuents. These were: (1) plume exposure (2) inhalation, consumption of; (3) cow milk, (4) vegetables and fruits, (5) meat, and (6) standing on contaminated ground. Real-time meteorology was used in all dose calculations for gaseous emuents.

Since there were no noble gases released from TMI-2 during 1998, the gamma and beta air doses (lines 3 and 4, respectively) were zero.

The maximum organ dose due to the release of particulates and tritium from TMI-2 in 1998 was 1.30E-4 mrem to the liver, total body, thyroid, kidney, lung and G1 tract of a child residing 2000 meters from the site in the SE sector (line 5).

C. Liauid and Gaseous (Population)

Lines 6 - 9 present the person-rem doses resulting from 1998 TMI-2 liquid and gaseous emuents. These doses were summed over all pathways and the affected populations.

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

i The calculated maximum whole body dose to the afTected population from TMI-2 liquid emuents was 6.48E-4 person-rem. The maximum critical organ population dose from liquid emuents was 2.10E-3 person-rem to the bone. TMI-2 gaseous emuents resulted in a whole body population dose of 9.07E-3 person-rem and a maximum critical organ population dose of 9. 07E-3 person-rem to the liver, thyroid, kidney, lung and GI tract. '

For 1998, TMI-2 liquid and gaseous emuents resulted in maximum hypothetical doses that were a small fraction of the quanerly and yearly 10 CFR 50 Appendix 1 dose limits.

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Attachment 8 1998 Annual Radioactive Effluent Releases Report for TMI 1920-99-20177 Assessment of Radiation Doses from Liquid and Gaseous Emuents Releases to Members of the Public within the TMI Site Boundaries during 1998 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 the reporting period. The public did not have unrestricted access to the TMI site during 1998. Therefore no assessment of this dose is applicable.

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p Attachment 9 1998 Annual Radioactive Efiluent Releases Repon for TMI 1920-99-20177 Assessment of Radiation Dose to Most Likely Exposed Real Individual per 40 CFR 190 Dose calculations were also performed to demonstrate compliance with 40 CFR 190 (ODCM Pan IV Section 2.10). Gaseous and liquid effluents released from TMI-l and TMI-2 in 1998 would have resulted in maximum individual doses (regardless of age group) of 1.75E-2 mrem to the thyroid and 5.60E-2 mrem to any other organ including the whole body. The direct radiation component was determined using the highest 1998 fenceline exposure rate as measured by a TLD and subtracting from it the lowest TLD exposure rate. This method more accurately determines the exposure from TMINS by subtracting out the exposure rate from other sources of radiation in the environment. Based on the max 62m exposure rate of 7.06E0 mR/ standard 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 from Reg. Guide 1.109) would have l received an exposure of 6.47E-1 mR. Based on the lowest exposure rate of 3.12E0 mR/ standard month and converting it by the same method gives a background exposure of 2.86E-1 mR.

Therefore, the net exposare from direct radiation from TMI is 3.61E-1 mR. Combining the direct l radiation exposure (assumed to be equal to dose) with the maximum organ doses from liquid and gaseous releases, the maximum potential (total) dose would have been 3.79E-1 mrem to the thyroid and 4.17E-1 mrem to any other organ. Both doses are well below the limits specified in 40 CFR 190.

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Attachment 10 1998 Annual Radioactive Emuent Releases Report for TM1 1920-99-20177 Deviation from the ODCM Sampling and Analysis Regime during 1998 There were no deviations from the emuent sampling and analysis regime specified in the TM1 OfTsite Dose Calculation Manual during 1998.

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Enclosure 1 -

1998 Annual Radioactive Efiluent Releases Report for TMI 1920-99-20177 l

TMI Offsite Dose Calculation Manual, Revision 17 l 6610-PLN-4200.01 l

t~ (Revision 17 was issued on September I,1998) l l

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