ML20034F515

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Effluent & Waste Disposal Semiannual Rept for Third & Fourth Quarters 1992
ML20034F515
Person / Time
Site: Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date: 12/31/1992
From: Tremblay L
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-93-21, NUDOCS 9303030340
Download: ML20034F515 (41)
v • d • e


Text

{{#Wiki_filter:_ VERMONT YANKEE NUCLEAR POWER COhtPORATION .f3 Ferry Road, Brattleboro, VT 05301-7002 ) N\\ ENGINEERING OFFICE 560 t/A;N STREET [ DOLTOt4. MA 01740 4508; 779U11 February 26,1993 BVY 93 - 21 United States Nuclear Regulatory Commission ATfN: Document ControlDesk Washington, DC 20555

References:

a. License No. DPR-28 (Docket No. 50-271) l

Subject:

Vermont Yankee Effluent and Waste Disposal Semiannual Repon for the Third and Fourth Quarters,1992

Dear Sir:

Enclosed herewith please find one copy of the Vermont Yankee Nuclear Power Corporation subject report. This report covers the period beginning July 1,1992 and ending December 31, 1992 and is submitted in accordance with our Technical Specification 6.7.C.1 and 10CFR50.36a(a)(2). The annual dose summary to man for 1992 will be submitted in a supplemental report in accordance with Technical Specification 6.7.C.I.b. We trust that the enclosed information is satisfactory; however, should you have any questions, please contact this office. Very truly yours, VE MONT YANKEE NUCLEAR POWER CORPORATION MDY Lim (r Leonard A.Tremblay,Jr. Q Senior Licensing Engineer cc: USNRC Region I Administrator USNRC Resident Inspector-VYNPS USNRC Project Manager-VYNPS 030054 gi pom any pi

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1 ? i EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT FOR i THIRD AND FOURTH OUARTERS,1992 b t J W t i I 4 I i i Vermont Yankee Nuclear Power Station t i bbkh L f s

p TABLE 1A Vermont Yankee Effluent and Waste Disposal Semiannual Report I Third and Fourth Ouarters. 1992 i Gaseous Effluents - Summation of All Releases z Unit Quarter Quarter Est. Total 3 4 Error. % i i A. Fission and Activation Gases i

1. Total release Ci 1.46E+03 1.08E+03 1.00E+02

{

2. Averace release rate for period uCi/sec 1.86E+02 1.37E+02
3. Percent of Tech. Spec. limit (11 B. Iodines h

i

1. Total lodine-131 Ci 4.96E-03 2.19E-03 5.00E+01 4
2. Averace release rate for period uCi/sec 6.31E-04 2.78E-04

{

3. Percent of Tech. Spec. limit (1)

+ j i f C. Particulates t k

1. Particulates with T-1/2 > 8 davs Ci 3.34E-03 2.88E-03 5.00E+01
2. Averace release rate for period uti/sec 4.25E-04 3.66E-04
3. Percent of Tech. Spec. limit (1) g
4. Gross alpha radioactivity Ci 2.66E-06 2.76E-06 I

i D. Tritium j

1. Total release Ci 5.11E+00 5.7]E+00 5.00E+01
2. Averace release rate for period uCi /sec 6.50E-01 7.26E-01
3. Percent of Tech. Spec, limit (1)

(1) Percent of Technical Specification limit will be provided in the Supplemental Effluent and Waste Disposal Report to be submitted per Technical Specificaticn l 6.7.C.1. j 4 ,mue i

i TABLE IB l i Vermont Yankee 1 Effluent and Waste Disposal Semiannual Report Third and Fourth Ouarters.1992 Gaseous Effluents - Elevated Releases II) Continuous Mode Batch Mode Nuclides Released Unit Quarter Quarter Quarter Quarter 3 4 3 4

1. Fission Gases Krypton-85 Ci ND ND

[ Krvpton-85m Ci 5.90E400 3.86E+00 l Krypton-87 Ci 4.39E+01 2.87E+01 i Krypton-88 Ci 2.23E+01 1.44E+01 [ Xenon-133 Ci 2.48E+00 1.66E+00 Xenon-135 Ci 3.54E+01 2.35E+01 t Xenon-135m Ci 2.44E+02 1.62E+02 Xenon-138 Ci 1.06E+03 7.03E+02 Unidentified Ci l Total for period Ci 1.41E+03 9.37E+02

2. Todines

[ lodine-131 Ci 4.61E-03 1.79E-03 I lodine-133 C1 2.13E-02 9.32E-03 l Iodine-135 Ci ND ND Total for period C1 2.59E-02 1.11E-02

3. Particulates Strontium-89 Ci 3.06E-04 9.49E-04 l

Strontium-90 Ci 2.84E-05 2.60E-05 Cesium-134 Ci ND ND Cesium-137 Ci 1.22E-05 . 1.69E-05 Barium-lanthanum-140 Ci 2.22E-03 1.3BE-03 Mancanese-54 Ci ND 6.49E-06 i l Chromium-51 Ci ND ND l Cobalt-58 Ci ND ND Cobalt-60 Ci 1.29E-05 5.06E-05 Cerium-141 Ci ND 3.16E-06 i 21nc-65 Ci ND ND Total for period Ci 2.58E-03 2.43E-03 j (1) There were no batch mode gaseous releases for this reporting period. ND - Not detected at the plant Stack. l RJh60 I

l TABLE 1C Vermont Yankee t Effluent and Waste Disposal Semiannual Report Third and Fourth Ouarters 1992 I Gaseous Effluents - Ground level Releases (2) II) Continuous Mode Batch Mode Nuclides Released Unit Quarter Quarter Ouarter Quarter I 3 4 3 4

1. Fission Gases i

Krypton-85 Ci ND ND Krypton-85m Ci 2,10E-01 5.77E-01 Krvpton-87 Ci 1.56E+00 4.29E+00 Krypton-88 Ci 7.90E-01 2.16E+00 Xenon-133 Ci 8.84E-02 2.51E-01 Xenon-135 Ci-1.26E+00 3.52E+00 Xenon-135m Ci 8.68E+00 2.43E+01 Xenon-138 Ci 3.75E+01 1.05E+02 Unidentified Ci Total for period Ci 5.01E+01 1.40E+02

2. TodinesI2)

Iodine-131 Ci 3.54E-04 4.01E-04 Iodine-133 Ci 2.07E-03 2.47E-03 Iodine-135 Ci ND ND l Total for period Ci 2.42E-03 2.87E-03

3. Particulates I2)

Strontium-89 Ci 4.30E-04 1.22E-04 j Strontium-90 Ci 1.94E-06 6.48E-07 Cesium-134 Ci ND ND l Cesium-137 Ci ND ND i Barium-lanthanum-140 Ci 3.31E-04 3.22E-04 3 Mancanese-54 Ci ND ND l Chromium-51 Ci ND ND f Cobalt-58 Ci ND ND i Cobalt-60 Ci ND ND Cerium-141 Ci ND 1.3BE-06 7 int-65 Ci ND ND l Total for period Ci 7.63E-04 4.46E-04 i l l (1) There were no batch mode gaseous releases for this reporting period. l (2) Effluent sampling of the turbine roof ventilators as a ground level release l L point was initiated at the beginning of the fourth quarter 1991. ND - Not detected at the Turbine Building roof. i nn., I

TABLE 10 Vermont Yankee l Effluent and Waste Disposal Semiannual Report I Third and Fourth Quarters 1992 i Gaseous Effluents - Nonroutine Releases l I f There were no nonroutine or accidental gaseous releases during this reporting period. t I t i l I i I r I I h h t 5 l i l l i R12\\60 i f l i I r

I TABLE 2A I Vermont Yankee r Effluent and Waste Desposal Semiannual Report Third and Fourth Ouarters 1992 i Licuid Effluents - Summation of All Releases I Unit Guarter Quarter Est. Total l A. Fission and Activation Products 3 4 Error. % i

1. Total release (not including tritium, cases, alphai Ci 2.66E-05 1.00E+02 i
2. Average diluted concentration

[ durino period uCi/ml 3.80E-09 l

3. Percent of applicable limit (1) l B. Tritium

~~

1. Total release Ci 4.02E-05 1.00E+02
2. Average diluted concentration j

durino period uCi/ml 5.74E-09 q

3. Percent of applicable limit (1)

-[ t i C. Dissolved and Entrained Gases

1. Total release Ci 8.14E-06 1.00E+02
2. Average diluted concentration f

durino period uCi/ml 1.16E-09 l

3. Percent of applicable limit (2) 1 D. Gross Alpha Radioactivity

[ l

1. Total release Ci

+1.00E+02 l E. Volume of waste released (prior to dilution) liters 3.79E+03 +2.50E+01 F. Volume of dilution water used durino period liters 7.00E+06 +2.50E+01 i (1) Concentration limits specified in 10CFR, Part 20. Appendix B Table II, j Column 2 (Technical Specification 3.8. A.1). The percent of applicable } limit reported is based on the average diluted concentration during the period. l At no time did any release exceed the concentration limit. (2) Concentration limits for dissolved and entrained noble gases is 2E-04 l t l microcuries/ml (Technical Specification 3.8.A.1). The percent of applicable limit reported is based on the average diluted concentration during the period. l At no time did any release exceed the concentration limit. t i f U240 l

I i I l TABLE 2B Vermont Yankee 'f Effluent and Maste Disposal Semiannual Report Third and Fourth Ouarters 1992 l ticuid Effluents - Nonroutine Releases Continuous Mode Batch Mode I Nuclides Released Unit Quarter Quarter Quarter Guarter 3 4 3 4 Strontium-89 Ci ND Strontium-90 C1 ND Cesium-134 Ci ND i Cesium-137 Ci ND Iodine-131 Ci 3.46E-06 Cobalt-58 Ci ND Cobalt-60 Ci ND l Iron-59 Ci ND Zint-65 Ci ND [ Mancanese-54 Ci ND I Chromium-51 Ci ND i Zirconium-Niobium-95 Ci ND l Molvbdenum-99 Ci ND 4 Technetium-99m Ci 1.26E-07 l Barium-Lanthanum-140 Ci 1.17E-06 Cerium-141 Ci 2.39E-07 i f Iodine-132 Ci 1.58E-06 Iodine-133 Ci 6.63E-06 Iodine-134 Ci 1.06E-06 l Iodine-135 Ci 7.27E-06 St ronti um-91 Ci 1.28E-07 6 Strontium-92 Ci 3.90E-07 5 Yttrium-91m Ci 7.80E-07 Ruthenium-106 Ci 1.58E-06 2 Barium-139 Ci 2.23E-06 r -j Unidentified Ci Total for period (above) Ci 2.66E-05 l [ Xenon-133 Ci 4.96E-07 1 Xenon-135 Ci B.06E-07 i Xenon-135m Ci 3.22E-06 l ) Xenon-131m Ci 3.62E-06 j Total for period Ci 8.14E-06 I ND - Not detected in the Turbine Building sump. t i l Rtrun I

l l TABLE 3 i Vermont Yankee i Effluent and Waste Disposal Semiannual Report Third and Fourth Ouarters. 1992 Solid Waste and Irradiated Fuel Shipments A. Solid Waste Shipped Off-Site for Burial or Disposal (Not Irradiated fuel): l Unit 6-Month Est. Total

1. Type of Waste Period Error. I
a. Spent resins, filter sludges, evaporator m) 3.39E+01 bottoms. etc.

Ci 1.96E+02 +7.50E+01 l

b. Dry compressible waste, contaminated nf 2.93E+02 See Note 1 i

eouipment. et c. Ci 4.44E+01 7.50E+01 I i

c. Irradiated components. control rods.

nP 3.25E+00 j etc. Ci 2.00E+04 7.50E+01 f l' i l 2 Estimate of Major Nuclide Composition (By Type of Waste)- I a. Zint-65 i 6.26E+01 c. Iron-55 % 5.07E+01 Cesium-137 % 9.81E+00 Cobalt-60 % 4.41E+01 r Cobalt-60 i 9.48E+00 Nickel-63 1 3.53E+00 f Iron-55 1 5.16E400 I Cesium-134 -1 3.41E+00 [ b. Iron-55 1 6.01E+01 Cobalt-60 % 1.70E+01 Zinc-65 % 8.96E+00 j Mancanese-54 % 5.43E+00 f i i 4 j'

3. Solid Waste Disposition:

I ) Number of Shipments Mode of Transportation Destination l l 8 Truck Barnwell SC' [ 1 Truck Wampum, PA Note 2 [ 3 Truck Oak Ridge TN Note 2 i B. Irradiated fuel Shipments (Disposition): None i C. Supplemental information

1) Class of solid waste containers shipped:

9 A (unstable). ISA. 5B. 2C { j

2) Types of containers used:

8 Strong-tight Containers. 21 Type A, 2 Type B

3) Solidification agent or absorbent:

None i 1 i i ? t i niua I f

I Note 1: The DAW volume and activity includes all waste shipped off-site. All but 105 ft' and 44.06 Ci were sent to processors. See the attached data for the burial information on this waste. Note 2: These were shipments to processors. } r h \\ I + 6 f t i i i f i i i 't i i I i i i I l \\- l h Rit\\60 - f

i TABLE 3 ADDENDUM Of the waste shipped to processors, the following data is given with regard to its ultimate disposal. Volume disposed 1.82E+01

n' Activity disposed 1.82E-01 Ci i

No. of shipments 4 destination Barnwell (hote 3) 15 destination Beatty (Note 3) 1 Class of containers 74 Class A (Unstable) i Type of containers 74 Strong tight containers Solidification Agent: None Note 3: These are partial shipments along with other generators' waste. i { i 't t F r W t 1 1 r i f L i i l i nzuo 3 F

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TABLE SB VERMONT YANKEE JAN 92 - OLC 92 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND OATA STABILITY CLASS S CLASS FFIDUENCY (PERCENT) = .53 W!dD DIRECTION FROM SPEED (MPM) N WhE NE ENE E ESE SE SSE S SSW SW WSW W WWW NW NNW VRBL TOTAL CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C-3 0 0 0 0' O O 0 0 1 0 0 0 0 0 0 0 0 1 (1) .00 .00 .00 .00 .00 .00 .00 .00 2.22 .00 .00 .00 .00 .00 .00 .00 .00 2.22 (2) .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .01 4-7 0 0 0 0 1 0 2 0 0 0 0 0 0 0 0 3 0 6 l (1) .00 .00 .00 .00 2.22 .00 4.44 .00 .00 00 .00 .00 .00 .00 .00 6.67 .00 13.33 (2) .00 .00 .00 .00 .01 .00 .02 .00 .00 .00 .00 .00 .00 .00 .00 .D4 .00 .07 8-12 1 0 0 0 0 0 2 1 0 0 0 0 0 1 0 11 0 16 l (1) 2.22 .00 .00 .00 .00 .00 4.44 2.22 .00 .00 .00 .00 .00 2.22 .00 24.44 .00 35.55 (2) .01 .00 .00 .0C .00 .00 .02 .01 .00 .00 .00 .00 .00 .01 .00 .13 .00 .19 13-18 4 0 0 0 0 0 0 0 0 0 0 0 0 0 2 13 0 19 (1) 8.89 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 4.44 28.89 .00 42.22 (2) . D5 .00 .00 .00 .00 .00 .00 .00 .00 00 .00 .00 .00 .00 .02 .15 .00 .22 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 3 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 6.67 .00 6.67 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .D4 .D0 . D4 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .D0 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 5 0 0 0 1 0 4 1 1 0 0 0 0 1 2 30 0 45 (1) 11.11 .00 .00 .00 2.22 .00 B.89 2.22 2.22 .00 .00 .00 .00 2.22 4.44 66.67 .00 100.00 (2) .D6 .00 .00 .00 .01 .00 .05 .01 .01 .00 .00 .00 .00 .01 .D2 .35 .00 .53 (1)= PERCENT OF ALL GOOD OBSERVATIONS FDR THIS PAGE (2)= PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PER100 C= CALM (WIND SPEED LESS THAN OR EQUAL TO.95 MPH) __

TABLE SC VERM3WT YANKEE JAN 92 - DEC 92 METEOROLOG3 CAL DATA J0!WT FRE7JENCY DISTRIBUTION 297.0 FT W!uD CA1A STABILITY CLASS C CLASS FREQUENCY (PERCENT) = 2.18 WIND DIRECT 10W FROM SPEED (MPN) N khE bE EWE E ESE SE SSE S SSW SW WSW W WWW WW WWW VRBL TOTAL CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .D0 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C-3 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 (1) .00 .00 .00 .00 .00 .00 .00 .54 .00 .00 .00 .00 .00 .00 .00 .00 .00 .54 (2) .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 4-7 0 2 2 0 1 1 1 2 1 0 0 0 0 0 1 11 0 22 (1) .00 1.DB 1.D8 .00 .54 .54 .54 1.08 .54 .00 .00 .00 .00 .00 .54 5.95 .00 11.89 (2) .00 .02 .02 .00 .01 .01 .01 .02 .01 .00 .00 .00 .00 .00 .01 .13 .00 .26 8-12 21 0 0 0 0 2 5 12 9 0 0 0 1 4 4 17 0 75 (1) 11.35 .00 .00 .00 .00 1.08 2.70 6.49 4.86 .00 .00 .00 .54 2.16 2.16 9.19 .00 40.54 (2) .25 .00 .00 .00 .00 .02 .06 .14 .11 .00 .00 .00 .01 .05 .05 .20 .00 .88 13-18 8 1 0 0 0 0 0 0 2 2 0 1 2 9 6 21 0 52 (1) 4.32 .54 .00 .00 .00 .00 00 .00 1.08 1.08 .00 .54 1.08 4.B6 3.24 11.35 .00 28.11 (2) .09 .01 .00 .00 .00 .00 .00 .00 .02 .02 .00 .01 .02 .11 .07 .25 .00 .61 19-24 1 0 0 0 0 0 0 0 0 0 0 0 2 3 4 15 0 25 (1) .54 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 1.08 1.62 2.16 8.11 .00 13.51 (2) .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 . D4 .05 .18 .00 .29 CT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 8 0 10 (1) .00 .00 00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .54 .54 4.32 .00 5.41 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .01 .D9 .00 .12 ALL SPEEDS 30 3 2 0 1 3 6 15 12 2 0 1 5 17 16 72 0 185 (1) 16.22 1.62 1,08 .00 .54 1.62 3.24 8.11 6.49 1.08 .00 .54 2.70 9.19 8.65 38.92 .00 100.00 (2) .35 .D4 .02 .00 .01 . D4 .07 .18 .14 .J2 .00 .01 .D6 .20 .19 .85 .00 2.18 (1)= PERCENT OF ALL GOOD OBSERVATIDAS FOR THIS PACE (2)=PERCEhT OF ALL GOOD DESERVAT!DNS FOR THIS PERIOD C= CALM.WIWD SPEED LESS THAN DR EDUAL 70.95 MPH) _ _ _ _ _

TABLE SD VERMONT YANKEE JAN 92 - DEC 92 METEDROLOGICAL DATA JolkT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS 0 CLASS FREQUENCY (PERCENT) = 51.10 VIND DIRECT!DW FROM l SPEED (MPH) N hkE WE ENE E ESE SE SSE S SSW CW WSW W WWW WW bWW VRSL TOTAL l CALM 0 0 0 0 0 1 0 0 1 0 1 1 0 0 0 2 0 6 (1) .00 .00 .00 .00 .00 .02 .00 .00 .02 .00 .02 .02 .00 .00 .00 .05 .00 .14 (2) .00 .00 .00 .00 .00 .01 .00 .00 .01 .00 .01 .01 .00 .00 .00 .02 .00 .07 C-3 52 39 33 34 41 55 72 52 35 19 20 13 16 25 36 54 0 596 (1) 1.20 .90 .76 .78 .94 1.27 1.66 1.20 .81 44 46 .30 .37 .58 .83 1.24 .00 13.73 (2) .61 46 .39 .40 .48 .65 .85 .61 .41 .22 .24 .15 .19 .29 .42 .64 .00 7.02 4-7 126 52 24 28 54 83 130 116 114 31 19 17 10 32 44 203 0 1D83 (1) 2.90 1.20 .55 .65 1.24 1.91 3.00 2.67 2.63 .71 .44 .39 .23 .74 1.01 4.68 .00 24.95 (2) 1.48 .61 .28 .33 .64 .98 1.53 1.37 1.34 .37 .22 .20 .12 .38 .52 2.39 .00 12.75 8-12 148 44 15 13 14 40 76 127 251 72 27 32 79 112 71 262 0 1383 (1) 3.41 1.01 .35 .30 .32 .92 1.75 2.93 5.78 1.66 .62 .74 1.82 2.58 1.64 6.04 .00 31.87 (2) 1.74 .52 .'8 .15 .16 47 .89 1.50 2.96 .85 .32 .38 .93 1.32 .S4 3.08 .00 16.28 13-18 116 28 3 10 3 5 10 18 1 44 21 12 26 66 162 94 147 0 865 (1) 2.67 .65 .07 .23 .07 .12 .23 .41 3.32 48 .28 .50 1.52 3.73 2.17 3.39 .00 19.93 (2) 1.37 .33 .D4 .12 .D4 .D6 .12 .21 1.70 .25 .14 .31 .78 1.91 1.11 1.73 .00 10.18 19-24 31 7 0 1 0 0 1 2 23 6 0 7 14 72 47 SB D 299 (1) .71 .16 .00 .02 .00 .00 .02 .05 .53 .14 .00 .16 .32 1.66 1.08 2.03 .D0 6.89 (2) .37 .D8 .00 .01 .00 .00 .01 .02 .27 .07 .00 .DS .16 .85 .55 1.D4 .D0 3.52 GT 24 0 0 0 0 0 0 0 0 0 2 0 0 2 22 23 59 0 108 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .05 .00 .00 .05 .51 .53 1.36 .00 2.49 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .02 .26 .27 .69 .00 1.27 ALL SPEEDS 4 73 170 75 66 112 1 84 289 315 568 151 79 96 187 425 315 815 0 4340 (1) 10.90 3.92 1.73 1.98 2.58 4.24 6.66 7.26 13.D9 3.48 1.82 2.21 4.31 9.79 7.26 18.78 .00 100.00 (2) 5.57 2.00 .88 1.01 1.32 2.17 3.40 3.71 6.69 1.78 .93 1.13 2.20 5.00 3.71 9.60 .00 51.10 (1)=PERCEWT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)tPERCENT OF ALL GOOD DBSERb ATIONS FDR THIS PER100 C= CALM (WIND SPEED LESS THAN OR EDUAL TO.95 MPH). _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _

TAELE SE VERC40NT YAWKEE JAN 92 - DEC 92 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT 'tND DATA STABILITY CLASS E CLASS FREDUENCY (PERCEWT) = 34.72 s WIND DIRECTIDW FROM SPEED (MPH) N WWE WE ENE E ESE SE SSE S SSW SW WSW W WWW NV NWW VRBL TOTAL CALM 0 2 0 0 2 2 2 2 3 0 1 2 0 1 0 3 0 20 (1) .00 .07 .00 .00 .07 .07 .07 .07 .10 .00 .03 .07 .00 .03 .00 .10 .00 .68 (2) .00 .02 .00 .00 .02 .02 .02 .02 .04 .00 .01 .02 .00 .01 .00 .04 .00 .24 C-3 100 54 42 44 70 57 91 70 30 20 15 19 14 22 46 71 0 765 (1) 3.39 1.83 1.42 1.49 2.37 1.93 3.09 2.37 1.02 .68 .51 .64 .47 .75 1.56 2.41 .00 25.94 (2) 1.18 .64 49 .52 .82 .67 1.07 .82 .35 .24 .18 .22 .16 .26 .54 .84 .D0 9.01 4-7 181 19 18 12 19 36 149 134 1C3 36 21 19 21 26 38 253 0 1D85 (1) 6.14 . 64 .61 .41 .64 1.22 5.05 4.54 3.49 1.22 .71 .64 .71 .BB 1.29 8.58 .00 36.79 (2) 2.13 .22 .21 .14 .22 42 1.75 1.58 1.21 42 .25 .22 .25 .31 .45 2.98 .00 12.78 8-12 95 6 1 0 2 9 42 92 81 42 13 to 25 64 54 222 0 758 (1) 3.22 .20 .03 .00 .07 .31 1,42 3.12 2.75 1.42 .44 .34 .85 2.17 1.83 7.53 .00 25.70 (2) 1.12 .07 .01 .00 .02 .11 .49 1.08 .95 .49 .15 .12 .29 . 75 .64 2.61 .00 8.92 l 13-18 28 0 0 0 1 2 7 17 34 13 4 13 14 43 38 67 0 281 (1) .95 .00 .00 .00 .03 .07 .24 .58 1.15 44 .14 .44 .47 1.46 1.29 2.27 .00 9.53 (2) .33 .00 .00 .00 .01 .02 .08 .20 .40 .15 .05 .15 .16 .51 .45 .79 .D0 3.31 19-24 0 0 0 0 0 0 3 3 6 0 1 0 2 4 6 6 0 31 (1) .00 .00 .00 .00 .00 .00 .10 .10 .20 .00 .03 .00 .07 .14 .20 .20 .00 1.05 (2) .00 .00 .00 .00 .00 .00 .04 .D4 .07 .00 .01 .00 .02 .05 .07 .07 .00 .37 GT 24 0 0 0 0 0 0 0 0 5 0 0 0 1 1 0 2 0 9 (1) .00 .00 .00 .00 .00 .00 .00 .00 .17 .00 .00 .00 .03 .03 .00 .07 .00 .31 (2) .00 .00 .00 .00 .00 .00 .00 .00 .D6 .00 .00 .00 .01 .01 .00 .02 .00 .11 ALL SPEEDS 4 04 81 61 56 94 1D6 294 318 262 111 55 63 77 161 1S2 624 0 2949 (1) 13.70 2.75 2.07 1.90 3.19 3.59 9.97 10.78 8.88 3.76 1.87 2.14 2.61 5.46 6.17 21.16 .00 100.00 (2) 4.76 .95 .72 .66 1.11 1.25 3.46

3. 74 3.D8 1.31

.65 .74 .91 1.90 2.14 7.35 .00 34.72 (1)= PERCENT OF ALL GOOD DBSERVATIONS FDR THIS PACE (2)= PERCENT OF ALL GOOD DBSERbAT!DNS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL 70.95 MPH). _ _.

l TABLE 5F VERMONT YANKEE JAN 92 - DEC 92 METEOROLOGICAL DATA JOINT FREQUENCY O!STRIBJTION 297.0 FT WIKO DATA STABILITY CLASS F CLASS FREQUENCY (PERCEnF) = 10.00 VIND DIRECTIDW FROM SPEED (MPH) N kWE NE ENE E ESE SE SSE S SSW SW VSW W WWW NW kNW VRBL TOTAL CALM 1 2 1 0 0 1 0 0 0 0 0 0 0 0 1 0 0 6 (1) .12 .24 .12 .00 .00 .12 .00 .00 .00 .00 .00 .00 .00 .00 .12 .00 .00 .71 (2) .01 .02 .01 .00 .00 .01 .00 .00 .00 .00 .00 .00 . D0 .00 .01 .00 .00 .07 C-3 18 29 20 18 22 24 29 30 23 6 7 7 7 to 17 36 0 323 (1) 4.48 3.42 2.36 2.12 2.59 2.23 3.42 3.53 2.71 .71 .82 . E2 .52 1.18 2.00 4.24 .00 18.04 (2) .45 .34 .24 .21 .26 .28 .34 .35 .27 07 .08 .08 .08 .12 .20 42 .00 3.B0 4-7 53 7 4 4 6 13 51 65 27 13 7 11 8 14 26 65 0 3 74 (1) 6.24 .E2 47 .47 .71 1.53 6.01 7.66 3.18 1.53 .E2 1.30 .94 1.65 3.D6 7.66 .00 44.05 (2) .62 .08 .05 .05 .07 .15 .60 .77 .32 15 .08 .13 .09 .16 .31 .77 .00 4.40 8-12 18 1 0 0 0 0 7 14 7 4 8 3 11 17 6 37 0 133 (1) 2.12 .12 .00 .00 .00 .00 .E2 1.65 .E2 47 .94 .35 1.30 2.00 .71 4.36 .00 15.67 (2) .21 .01 .00 .00 .00 .00 .08 .16 .08 .05 .09 .D4 .13 .20 .07 .44 .00 1.57 13-18 2 0 0 0 0 0 0 1 2 1 0 0 0 4 1 2 0 13 (1) .24 .00 .00 .00 .00 .00 .00 .12 .24 12 .00 .00 .00 .47 .12 .24 .00 1.53 (2) .02 .00 .00 .00 .00 .00 .00 .01 .02 .01 .00 .00 .00 .05 .01 .02 .00 .15 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .D0 .00 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 112 39 25 22 28 3B 87 110 59 24 22 21 26 45 51 140 0 849 (1) 13.19 4.59 2.94 2.59 3.30 4.48 10.25 12.96 6.95 2.E3 2.59 2.47 3.06 5.30 6.01 16.49 .00 100.00 (2) 1.32 46 .29 .26 .33 .45 1.02 1.30 .69 .28 .26 .25 .31 .53 .60 1.65 .00 10.00 (1)* PERCENT OF ALL GOOD DBSERVAT!DNS FOR THIS PAGE (2)= PERCENT OF ALL GOOD DBSERbATIDNS FDR THis PER100 C= CALM (VIND SPEED LESS TRAN OR EcuAL TO.95 MPH) -

TABLE SG VERMONT TAkrEE JAN 92 - DEC 92 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS C CLASS FRE3UENCY (PERCEWT) = 1.34 WIND DIRECT 10N FROM SPEED (MPH) N WWE NE eke E ESE SE SSE S SSW SW WSW W WNW WW WWW VRBL TOTAL CALM 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 (1) .00 .00 .00 .00 .00 .88 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .88 (2) .00 .00 .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 C-3 4 3 0 0 1 3 2 2 3 0 2 2 0 0 3 3 0 28 (1) 3.51 2.63 .00 .00 .88 2.63 1.75 1.75 2.63 .00 1.75 1.75 .00 .00 2.63 2.63 .00 24.56 (2) .05 .04 .00 .00 .01 .D4 .02 .02 . D4 .00 .02 .02 00 .00 .D4 . D4 .00 .33 4-7 6 1 2 1 0 1 2 7 4 2 3 2 1 2 3 9 0 46 (1) 5.26 .68 1.75 .88 .00 .88 1.75 6.14 3.51 1.75 2.63 1.75 .B8 1.75 2.63 7.89 .00 40.35 (2) .07 .01 .02 .01 .00 .01 .02 .DB .05 .02 .04 .02 .01 .02 .D4 .11 .00 .54 8-12 2 1 0 0 0 0 1 1 3 3 3 2 6 7 2 4 0 35 (1) 1.75 .88 .00 .00 .00 .00 .88 .88 2.63 2.63 2.63 1.75 5.26 6.14 1.75 3.51 .00 30.70 (2) .02 .01 .00 .00 .00 .00 .01 .01 .D4 .04 .04 .02 .07 .D8 .02 .05 .00 41 13-18 0 0 0 0 0 0 0 1 1 1 0 0 0 1 0 0 0 4 (1) .00 .00 .00 .00 .00 .00 .00 .88 .88 .88 .00 .00 .00 .BS .00 .00 .00 3.51 (2) .00 .00 .00 .00 .00 .00 .00 .01 .01 .01 .00 .00 .00 .01 .00 .00 .00 .05 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 0T 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 ,00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 00 ALL SPEEDS 12 5 2 1 1 5 5 11 11 6 8 6 7 10 8 16 0 114 (1) 10.53 4.39 1.75 .88 .88 4.39 4.39 9.65 9.65 5.26 7.02 5.26 6.14 8.77 7.02 14.D4 .00 100.00 (2) .14 .06 .02 .01 .01 .D6 .06 .13 .13 .07 .D9 .07 .08 .12 .09 .19 .00 1.34 (1)= PERCENT OF ALL GOOD DBSERVAT!DNS FOR THIS PAGE (2)=PERCEWT OF ALL GOOD DBSEWVATIONS FOR 1his PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL To.95 MPH) 24-

TABLE SH VERMONT YANKEE JAN 92 - DEC 92 METEDROLOGICAL DATA JolNT FREQUEbCY DISTRIBUTioW 297.0 FT WIND DATA STABILITY CLASS ALL CLASS FREQUENCY (PERCENT) = 100.00 WIND DIRECTION FROM SPEED (MPM) W kNE NE ENE E ESE SE SSE $ SSW FW WSW W WNW NW kNW VRBL TOTAL CALM 1 4 1 0 2 5 2 2 4 0 2 3 0 1 1 5 0 33 (1) .01 .05 .01 .00 .02 .D6 .02 .02 .05 .00 .02 .04 .00 .01 .01 .D6 .00 .39 (2) .01 .05 .01 .00 .02 .D6 .02 .02 .05 .00 .02 .04 .00 .01 .01 .D6 .00 .39 C-3 194 125 95 96 134 139 194 155 92 45 44 41 37 57 102 1 64 0 1714 (1) 2.28 1.47 1.12 1.13 1.58 1.64 2.28 1.E3 1.D8 .53 .52 48 44 .67 1.20 1.93 .00 20.18 (2) 2.28 1.47 1.12 1.13 1.58 1.64 2.28 1.E3 1.D8 .53 .52 .48 .44 .67 1.20 1.93 .00 20.18 4-7 366 81 50 45 81 134 336 324 249 B2 50 49 40 74 112 544 0 2617 (1) 4.31 .95 .59 .53 .95 1.58 3.96 3.81 2.93 .97 .59 .58 47 .87 1.32 6.41 .00 30.81 (2) 4.31 .95 .59 .53 .95 1.58 3.96 3.81 2.93 .97 .59 .58 47 .87 1,32 6.41 .00 30.81 8-12 285 52 16 13 16 51 133 247 351 121 51 47 122 205 138 553 0 2401 (1) 3.36 .61 .19 .15 .19 .60 1.57 2.91 4.13 1.42 .60 .55 1.44 2.41 1.62 6.51 .00 28.27 (2) 3.36 .61 .19 .15 .19 .60 1.57 2.91 4.13 1.42 .60 .55 1.44 2.41 1.62 6.51 .00 28.27 13-18 158 29 3 10 4 7 17 37 1E3 38 16 40 82 219 142 255 0 1240 (1) 1.B6 .34 . D4 .12 .05 .08 .20 .44 2.15 45 .19 .47 .97 2.58 1.67 3.00 .00 14.60 (2) 1.B6 .34 .D4 .12 .05 .08 .20 44 2.15 .45 .19 .47 .97 2.58 1.67 3.00 .00 14.60 19-24 32 7 0 1 0 0 4 5 29 6 1 7 18 79 57 115 0 361 (1) .38 .08 .00 .01 .00 .00 .05 .06 .34 .07 .01 .08 .21 .93 .67 1.35 .00 4.25 (2) .38 .08 .00 .01 00 .00 .05 .D6 .34 .07 .01 .08 .21 .93 .67 1.35 .00 4.25 GT 24 0 0 0 0 0 0 0 0 5 2 0 0 3 24 24 69 0 127 (1) .00 .00 .00 .00 .00 .00 .00 .00 .D6 .02 .00 .00 .D4 .28 .28 .81 .00 1.50 (2) .00 .00 .00 .00 .00 .00 .00 .00 .D6 .02 .00 .00 .D4 .28 .28 .81 .00 1.50 I l ALL SPEEDS 1036 298 165 165 237 336 6S6 770 913 294 164 187 302 659 576 1705 0 S493 (1) 12.20 3.51 1.94 1.94 2.79 3.96 8.08 9.07 10.75 3.46 1.93 2.20 3.56 7.76 6.78 20.08 .00 100.00 (2) 12.20 3.51 1.94 1.94 2.79 3.96 8.08 9.07 10.75 3.46 1.93 2.20 3.56 7.76 6.78 20.D8 .00 100.00 C1) PERCENT OF ALL G7JD OBSERVATIONS FOR THIS PAGE (2)= PERCENT OF ALL GOOD DBSERVATIONS FOR THIS PER100 C= CALM (WIND SPEED LESS THAN OR EDUAL To.95 MPH) _. _.

TABLE 6A VERMONT YAWKEE JAN 92 - DEC 92 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS A CLASS FREQUEkCY (PERCEWT) = 1.26 WIND DIRECTION FROM SPEED (MPH) N NNE WE ENE E ESE SE SSE S SSW SW WSW W WWW WW WWW VRBL TOTAL CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .D0 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C-3 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 3 (1) .00 .93 .93 .00 .00 .00 .00 .00 .00 .93 .00 .00 .00 .00 .00 .00 .00 2.78 (2) .00 .01 .01 .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .00 .00 .00 .00 .D4 4-7 6 0 0 1 2 2 3 2 0 0 0 0 1 1 6 19 0 43 (1) 5.56 .00 .00 .93 1.85 1.85 2.78 1.85 .00 .00 .00 .00 .93 .93 5.56 17.59 .00 39.81 (2) .07 .00 .00 .01 .02 .02 . D4 .02 .00 .00 .00 .00 .01 .01 .07 .22 .00 .50 8-12 14 0 0 0 0 0 1 0 2 1 0 0 3 1 7 28 0 57 (1) 12.96 .00 .00 .00 .00 .00 .93 .00 1.c5 .93 .00 .00 2.78 .93 6.48 25.93 .00 52.78 (2) .16 .00 .00 .00 .00 .00 .01 .00 .02 .01 .00 .00 .D4 .01 .08 .33 .00 .67 13-18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 4 0 5 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .93 3.70 .00 4.63 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .05 .00 .06 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .0G .00 .00 .00 .00 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .D0 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 20 1 1 1 2 2 4 2 2 2 0 0 4 2 14 51 0 108 (1) 18.52 .93 .93 .93 1.85 1.85 3.70 1.85 1.85 1.85 .00 .00 3.70 1.85 12.96 47.22 .00 1DO.00 (2) .23 .01 .01 .01 .02 .02 .05 .02 .02 .02 .00 .00 .05 .02 .16 .60 .00 1.26 (1)zPERCENT OF ALL GOOD OBSERVATIONS FOR THIS FAGE (2)= PERCENT OF ALL G000 DESERVATIONS FOR THIS PERICC C= CALM (WIND SPEED LEss THAN OR EQUAL To.95 MPH) _

TABLE 6B VERMONT YAkKEE JAN 92 - DEC 92 METEOROLOGICAL DATA J01NT FREQUENCY DISTRIBJTION 35.0 FT W!ND DATA STABILITY CLASS B CLASS FREQUEWCY (PERCEWT) = 1.90 VINO DIRECTION FROM SPEED (MPH) N WWE WE ENE E ESE SE ESE S SSW SW WSW W WWW WW WWW VRBL TOTAL CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1? .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (21 .00 .D0 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C-3 1 0 0 0 1 0 1 0 0 0 0 0 0 0 0 2 0 5 (1) .61 .00 .00 .00 .61 .00 .61 .00 .00 .00 .00 .00 .00 .00 .00 1.23 .00 3.07 (2) .01 .00 .00 .00 .01 .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .06 4-7 7 2 2 0 1 5 5 7 2 0 0 0 0 1 9 31 0 72 (1) 4.29 1.23 1.23 .00 .61 3.07 3.07 4.29 1.23 .00 .00 .00 .00 .61 5.52 19.02 .00 64.17 (2) .08 .02 .02 .00 .01 .06 .D6 .08 .02 .00 .00 .00 .00 .01 .11 .36 .00 .84 B-12 15 1 0 0 1 2 1 6 5 1 0 2 1 5 6 20 0 66 (1) 9.20 .61 .00 .00 .61 1.23 .61 3.68 3.07 .61 .00 1.23 .61 3.07 3.68 12.27 .00 40.49 (2) .18 .01 .00 .00 .01 .02 .01 .07 .D6 .01 .00 .02 .01 .D6 .07 .23 .00 .77 13-1B 1 0 0 0 0 0 0 0 2 0 0 0 2 3 2 8 0 18 (1) .61 .00 .00 .00 .00 .00 .00 .00 1.23 .00 .00 .00 1.23 1.84 1.23 4.91 .00 11.04 (2) .01 .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .00 .02 . D4 .02 .09 .D0 .21 19 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 1.23 .00 .00 1.23 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .02 CT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 24 3 2 0 3 7 7 13 9 1 0 2 3 9 19 61 0 163 (1) 14.72 1.84 1.23 .00 1.84 4.29 4.29 7.98 5.52 .61 .00 1.23 1.B4 5.52 11.66 37.42 .00 100.00 (2) .28 . D4 .02 .00 .D4 .D8 .D8 .15 .11 .01 .00 .02 .04 .11 .22 .71 .00 1.90 (1)sPERCENT OF ALL C000 OBSERVA110NS FOR THIS FAGE (2)= PERCENT OF ALL GOOD OBSERVATIONS FOR TH15 PERIOD Ca CALM (WIND SPEED LES3 ThAN OR EQUAL To.95 MPH) _

TABLE 6C VERMONT YANKEE JAN 92 - DEC 92 METEOROLOGICAL DATA J0lWT FREWUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS C CLASS FREDUENCY (PERCENT) = 3.31 WIND DIRECTION FROM SPEED (MPM) N WWE WE ENE E ESE SE SSE S SSW SW WSV W WNW NW WNW VRBL TOTAL CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 C-3 5 1 1 1 2 2 4 1 3 0 0 0 0 0 1 2 0 23 (1) 1.77 .35 .35 .35 .71 .71 1.41 .35 1.D6 .00 .00 .00 .00 .00 .35 .71 .00 8.13 (2) .06 .01 .01 .01 .02 .02 .05 .01 .D4 .00 .00 .00 .00 .00 .01 .02 .00 .27 4-7 25 4 2 2 7 9 12 18 7 2 1 0 2 2 6 25 0 124 (1) 8.E3 1.41 .71 .71 2.47 3.18 4.24 6.36 2.47 .71 .35 .00 .71 .71 2.12 B.E3 .00 43.E2 (2) .29 .05 .02 .02 .08 .11 .14 .21 .D8 .02 .01 .00 .02 .02 .07 .29 .00 1.45 8-12 25 6 0 0 1 3 0 3 16 3 2 3 4 15 5 17 0 103 (1) 8.E3 2.12 .00 .00 .35 1.D6 .00 1.06 5.65 1.D6 .71 1.06 1.41 5.30 1.77 6.01 .00 36.40 (2) .29 .07 .00 .00 .01 .04 .00 . D4 .19 .D4 .02 .D4 .05 18 .D6 .20 .00 1.20 13-18 1 0 0 0 0 0 0 0 2 0 0 0 2 7 7 12 0 31 (1) .35 .00 .00 .00 .00 .00 .00 .00 .71 .00 .00 .00 .71 2.47 2.47 4.24 .00 10.95 (2) .01 .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .00 .02 .D8 .08 .14 .00 .36 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .71 .00 .00 .71 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .D0 .02 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL $PEEDS 56 11 3 3 10 14 16 22 28 5 3 3 8 24 21 56 0 2E3 (1) 19.79 3.89 1.06 1.D6 3.53 4.95 5.65 7.77 9.89 1.77 1.06 1.06 2.83 8.48 7.42 19.79 .00 100.00 (2) .65 13 .04 .D4 .12 .16 .19 .26 .33 .D6 .04 .04 .09 .28 .25 .65 .00 3.31 (1)= PERCENT OF ALL C000 DBSERVATIDNS FOR THIS PAGE (2)= PERCENT OF ALL GOOD DBSERVATIONS FOR THIS PERIDD C= CALM (WIND SPEED LESS THAN DR EDUAL 70.95 MPM) - - -

TABLE 6D VERMONT YANKEE JAN 92 - DEC 92 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS D CLASS FREQUENCY (PERCENT)

  • 46.D6 WIND DIRECTION FROM SPEED (MPH)

N khE NE ENE E ESE SE SSE S SSW SW WSW W WWW WW WWW VRBL TOTAL CALM 1 0 0 0 0 0 0 0 3 0 0 1 0 1 1 0 0 7 (1) .03 .00 .00 .00 .00 .00 .00 .00 .D8 .00 .00 .03 .00 .03 .03 .00 . D0 18 (2) .01 .00 .00 .00 .D0 .00 .00 .00 .D4 .00 .00 .01 .00 .01 .01 .00 .D0 .D8 C-3 1D6 67 61 71 57 53 84 72 56 42 24 24 28 53 86 153 0 1037 (1) 2.69 1.70 1.55 1.80 1.45 1.34 2.13 1.83 1.42 1.D6 .61 .61 71 1.34 2.18 3.88 . 00 26.29 l (2) 1.24 .78 .71 .83 .67 .62 .9t .84 .65 49 .28 .28 .33 .62 1.00 1.79 .D0 12.11 1 4-7 171 67 39 60 83 103 100 197 181 46 30 37 78 79 160 299 0 1730 (1) 4.34 1.70 .99 1.52 2.10 2.61 2.54 4.99 4.59 1.17 .76 .94 1.98 2.00 4.06 7.58 .00 43.86 (2) 2.00 .78 46 .70 .97 1.20 1.17 2.30 2.11 .54 .35 .43 .91 .92 1.87 3.49 .00 20.21 8-12 112 39 9 3 6 19 3 32 1 62 23 27 39 88 133 99 123 0 917 (1) 2.84 .99 .23 .08 .15 48 .08 .81 4.11 .58 .68 .99 2.23 3.37 2.51 3.12 .00 23.25 (2) 1.31 46 .11 .04 .07 .22 . D4 .37 1.89 .27 .32 46 1.03 1.55 1.16 1.44 .00 10.71 13-18 19 5 0 1 0 0 0 1 20 5 3 6 21 78 42 30 0 231 (1) .48 .13 .00 .03 .00 .00 .00 .03 .51 .13 .08 .15 .53 1.98 1.06 .76 .00 5.86 (2) .22 .D6 .00 .01 .00 .00 .00 .01 .23 .D6 .D4 .07 .25 .91 49 .35 .00 2.70 19-24 0 0 0 0 0 0 0 0 0 1 0 0 1 9 11 0 0 22 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .03 .00 .00 .03 .23 .28 .00 .00 .56 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .01 .11 .13 .00 .00 .26 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .D0 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 00 .00 .00 .00 .00 .00 ALL SPEEDS 4D9 178 109 135 146 1 75 187 302 422 117 84 107 216 353 399 605 0 3944 (1) 10.37 4.51 2.76 3.42 3.70 4.44 4.74 7.66 10.70 2.97 2.13 2.71 5.48 8.95 10.12 15.34 .00 100.00 (2) 4.78 2.08 1.27 1.58 1.71

2. 04 2.18 3.53 4.93 1.37

.98 1.25 2.52 4.12 4.66 7.07 .00 46.06 (1)rPERCENT OF ALL GOOD OBSERVATIONS FDR THIS FACE (2)* PERCENT OF ALL GOOD OBSERVATIDNS FDR THIS PERIOD Ca CALM (WIND SPEED LESS THAN OR EDuAL TO.95 MPH) -

TABLE 6E VERMONT YANKEE JAN 92 - DEC 92 METEOROLOGICAL DATA JolNT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS E CLASS FREQUENCY (PERCENT) = 32.52 WINO DIRECTION FROM SPEED (MPH) N NkE NE ENE E ESE SE $$E S SSW SW WSW W WWW NW WWW VRBL TOTAL CALM 2 0 0 1 0 0 2 1 1 4 1 4 4 3 1 0 0 24 (1) .07 .00 .00 .D4 .00 .00 .07 .04 . 04 .14 .04 14 .14 .11 . D4 .00 .00 .B6 (2) .02 .00 .00 .01 .00 .00 .02 .01 .01 .05 .01 .05 .05 .D4 .01 .00 .00 .28 C-3 79 42 30 36 41 36 61 90 110 125 189 144 133 171 180 159 0 1626 (1) 2.84 1.51 1.08 1.29 1.47 1.29 2.19 3.23 3.95 4.49 6.79 5.17 4.78 6.14 6.47 5.71 .00 58.41 (2) .92 49 .35 .42 48 .42 .71 1.05 1.28 1.46 2.21 1.68 1.55 2.00 2.10 1.86 .00 18.99 4-7 50 8 6 3 9 34 35 122 113 34 22 35 58 86 135 198 0 948 (1) 1.80 .29 .22 .11 .32 1.22 1.26 4.38 4.06 1.22 .79 1.26 2.DS 3.D9 4.85 7.11 .00 34.05 (2) .58 .09 .07 . D4 .11 .40 .41 1.42 1.32 .40 .26 41 .68 1.00 1.58 2.31 .00 11.07 8 12 18 0 0 1 1 4 4 12 25 1 6 3 11 38 27 14 0 165 (1) .65 .00 .00 . D4 .04 .14 .14 43 .90 .D4 .22 .11 40 1.36 .97 .50 .00 5.93 (2) .21 .00 .00 .01 .01 .05 .05 .14 .29 .01 .07 .04 .13 44 .32 16 .00 1.93 13 18 0 0 0 0 0 0 0 1 2 0 1 0 2 8 4 1 0 19 (1) .00 .00 .00 .00 .00 .00 .00 .D4 .07 .00 .D4 .00 .07 .29 .14 .04 .00 .68 (2) .00 .00 .00 .00 .00 .00 .00 .01 .C2 .00 .01 .00 .02 .09 .05 .01 .00 .22 l 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 2 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .07 .00 .00 .00 .07 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .00 .02 l GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .D0 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 149 50 36 41 51 74 102 226 251 1 64 219 1B6 2DB 308 347 3 72 0 2784 (1) 5.35 1.80 1.29 1.47 1.E3 2.66 3.66 8.12 9.02 5.89 7.87 6.68 7.47 11.06 12.46 13.36 .00 100.00 (2) 1.74 .58 .42 .48 .60 .86 1.19 2.64 2.93 1.92 2.56 2.17 2.43 3.60 4.05 4.34 .00 32.52 (1)= PERCENT OF ALL GOOD DBSERVATIONS FOR THIS FACE (2)= PERCENT OF ALL GOT, OBSERVAllokS FOR THIS PERIOD Cs CALM (WIND SPEED LESS ThAN OR EQUAL To.95 MPN) _ _ _ - _ _ _ _ _ ____ _ _ _ _ - - _ - _ _ _ _

TABLE 6I VERMONT YANKEE JAN 92 - DEC 92 METEOROLOGICAL DAT A JOINT FREQUENCY O!STRIS'JTION 35.0 FT WINO DATA STABILITY CLASS F CLASS FREQUENCY (PERCENT) = 12.21 WINO DIRECTION FROM $ PEED (MPH) N kNE NE EhE E ESE SE SSE S SSW SW WSW W WWW NW NWW VRBL TOTAL CAL M 2 0 0 0 0 0 0 0 0 1 1 0 1 1 0 0 0 6 (1) .19 .00 .00 .00 .00 .00 .00 .00 .00 .10 .10 .00 .10 .1C .00 .00 .00 .57 (2) .02 .00 .00 .00 .00 .00 .00 .00 .00 .01 .01 .00 .01 .01 .00 .00 .00 .07 C-3 18 16 6 12-11 8 14 16 43 99 202 152 116 96 61 29 0 899 (1) 1.72 1.53 .57 1.15 1.05 .77 1.34 1.53 4.11 9.47 19.33 14.55 11.10 9.19 5.B4 2.78 . D0 86.03 (2) .21 .19 .07 .14 .13 .09 .16 .19 .50 1.16 2.36 1.78 1.35 1.12 .71 .34 .00 10.50 4-7 5 0 1 0 0 0 2 7 7 10 27 7 15 18 17 21 0 137 (1) 48 .00 .10 .00 .00 .00 .19 .67 .67 .96 2.58 .67 1.44 1.72 1.63 2.01 .00 13.11 (2) .06 .00 .01 .00 .00 .00 .02 .08 .08 .12 .32 .D8 .18 .21 .20 .25 .00 1.60 B-12 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 0 0 3 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .10 .00 .10 .00 .10 .00 .00 .00 .29 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .01 .00 .01 .00 .00 .00 . D4 13 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 19-24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .D0 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 25 16 7 12 11 8 16 23 50 111 230 160 132 116 78 50 0 1045 (1) 2.39 1.53 .67 1.15 1.05 .77 1.53 2.20 4.78 10.62 22.01 15.31 12.63 11.10 7.46 4.78 .00 100.00 (2) .29 .19 .08 .14 .13 .09 .19 .27 .58 1.30 2.69 1.87 1.54 1.35 .91 .58 .00 12.21 (3)= PERCENT OF ALL GOOD DBSERVATIONS FOR THIS PAGE (2)= PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PER100 C= CALM (WINO SPEED LESS THAN OR EQUAL 70.95 MFH). _ _ _ _ _

l l TABLE 6G VERMONT YAWKEE JAN 92 - DEC 92 METEOROLOGICAL DATA JOINT FREQ'JENCY DISTRIBUTION 35.0 FT WIND DAT A STABILITY CLASS G CLASS FREQUENCY (PERCEWT) = 2.74 WIND DIRECTIDW FROM SPEED (CtPH) N WWE kE EEE E ESE SE $$E S SSW SW WSW W WWW NW WWW VREL TOTAL CALM 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 2 (1) .00 .00 .00 .00 .00 .00 .00 .00 43 .00 .00 .43 .00 .00 .00 .00 .00 .85 (2) .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .01 .00 .00 .00 .00 .00 .02 C-3 7 3 1 6 2 3 2 4 9 18 41 22 25 23 14 9 0 189 (1) 2.98 1.28 .43 2.55 .85 1.28 .85 1.70 3.83 7.66 17.45 9.36 10.64 9.79 5.96 3.83 .00 80.43 (2) .08 .04 .01 .07 .02 .04 .02 .05 .11 .21 .48 .26 .29 .27 .16 .11 .00 2.21 4-7 0 0 0 1 0 0 1 0 3 9 11 3 1 1 7 7 0 44 (1) .00 .00 .00 .43 .00 .00 43 .00 1.28 3.83 4.68 1.28 43 43 2.98 2.98 .00 18.72 (2) .00 .00 .00 .01 .00 .00 .01 .00 .04 .11 .13 .04 .01 .01 .08 .08 .00 .51 8-12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 00 .00 .00 00 .00 00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 13-18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 00 00 .00 .00 .00 .00 00 00 .00 .00 .00 00 00 00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 00 .00 00 00 .00 .00 00 00 00 .00 19 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) 00 00 .00 .00 00 .00 .00 .00 00 .00 00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 00 00 .00 .00 .00 .00 00 .00 .00 00 .00 .00 00 .00 00 .00 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 00 .00 .00 .00 .00 .00 .00 .00 .00 .00 00 .00 00 00 00 00 .00 (2) .00 .00 .00 .00 .00 00 .00 .00 .00 .00 .00 00 00 .00 00 .00 .00 .00 ALL_ SPEEDS 7 3 1 7 2 3 3 4 13 27 52 26 26 24 21 16 0 235 (1) 2.98 1.28 43 2.98 .85 1.28 1.28 1.70 5.53 11.49 22.13 11.06 11.06 10.21 8.94 6.81 .00 100.00 (2) .08 .04 .01 .08 .02 .04 04 05 15 .32 .61 .30 .30 .28 .25 19 .00 2.74 (1)= PERCENT OF ALL 000D OBSERVATIONS FOR 1HIS PAGE CALM (WIND SPEED LESS THAN OR EQUAL TO.95 MPH) (2)sPERCENT OF ALL 000D DBSERVA110NS FOR THis PERIOD Cs --

Jh4BLE 6H VERMONT YANKEE JAN 92 - DEC 92 NETEOROLOC; CAL DATA J0lWT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILIT. CLASS ALL class FREQUENCY (PERCENT) = 100.00 VIND DIRECTION FROM SPEED (MPH) N WNE NE ENE E ESE SE SSE S SSW SV WSW W WWW NW NNW VREL TOTAL CALM 5 0 0 1 0 0 2 1 5 5 2 6 5 5 2 0 0 39 (1) .D6 .00 .00 .01 .00 .00 .02 .01 .D6 .D6 .02 .07 .D6 .D6 .02 .00 .00 46 (2) .06 .00 .00 .01 .00 .00 .02 .01 .D6 .06 .02 .07 .06 .D6 .02 .00 .00 .46 l C-3 216 130 100 126 114 102 166 1 83 221 285 456 342 302 343 342 354 0 3782 l (1) 2.52 1.52 1.17 1.47 1.33 1.19 1.94 2.14 2.58 3.33 5.33 3.99 3.53 4.01 3.99 4.13 .00 44.17 (2) 2.52 1.52 1.17 1.47 1.33 1.19 1.94 2.14 2.58 3.33 5.33 3.99 3.53 4.01 3.99 4.13 .D0 44.17 4-7 264 81 50 67 102 153 158 353 313 101 91 E2 155 188 340 600 0 3098 (1) 3.08 .95 .58 .78 1.19 1.79 1.85 4.12 3.66 1.18 1.06 .96 1.81 2.20 3.97 7.01 .00 16.18 (2) 3.08 .95 .58 .78 1.19 1.79 1.85 4.12 3.66 1.18 1.D6 .96 1.51 2.20 3.97 7.01 .D0 36.18 B-12 1 84 46 9 4 9 28 9 53 210 30 35 48 107 193 144 202 0 1311 (1) 2.15 .54 .11 .05 .11 .33 .11 .62 2.45 .35 .41 .56 1.25 2.25 1.68 2.36 .00 15.31 (2) 2.15 .54 .11 .05 .11 .33 .11 .62 2.45 .35 .41 .56 1.25 2.25 1.68 2.36 .00 15.31 13-18 21 5 0 1 0 0 0 2 26 5 4 6 27 96 56 55 0 3 34 (1) .25 .06 .00 .01 .00 .00 .00 .02 .30 .06 .05 .07 .32 1.12 .65 .64 .00 3.55 (2) .25 .D6 .00 .01 .00 .00 .00 .02 .30 06 .05 .07 .32 1.12 .65 .64 .00 3.55 19-24 0 0 0 0 0 0 0 0 0 1 0 0 1 11 15 0 0 28 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .01 13 .18 .00 .00 .33 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .01 .13 .18 .00 .00 .33 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 690 262 159 199 225 2E3 335 592 775 427 588 484 597 E36 899 1211 0 8562 (1) 8.06 3.D6 1.86 2.32 2.63 3.31 3.91 6.91 9.05 4.99 6.87 5.65 6.97 9.76 10.50 14.14 .00 100.00 (2) 8.D6 3.06 1.86 2.32 2.63 3.31 3.91 6.91 9.05 4.99 6.87 5.65 6.97 9.76 10.50 14.14 .00 100.00 (1)= PERCENT OF ALL GOOD DBSERVATIONS FOR TH!$ PAGE (2)= PERCENT OF ALL GOOD DBSERVATIDNS FDR THis PERIOD C= CALM (WIND SPEED LESS THAN OR EDUAL To.95 MPH). _ _ _ _m_____

APPENDIX A EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT Supplemental Information Third and Fourth Quarters, 1992 Facility: Vermont Yankee Nuclear Power Station Licensee: Vermont Yankee Nuclear Power Corporation IA. TECHN] CAL SPECIFICATION LIMITS - DOSE AND DOSE RATE Technical Specification and Cateoorv Limit a. Noble Gases 3.8.E.1 Total body dose rate 500 mrem /yr l 3.8.E.1 Skin dose rate 3000-mrem /yr l 3.8.F.1 Gamma air dose 5 mrad in a quarter l 3.8.F.1 Gamma air dose 10 mrad in a year 3.8.F.1 Beta air dose 10 mrad in a quarter 3.8.F.1 Beta air dose 20 mrad in a year i b. Todine-131. lodine-133. Tritium and Radionuclides in Particulate Form With Half-lives Greater Than 8 Davs 3.8.E.1 Organ dose rate 1500 mrem /yr 3.8.G.1 Organ dose 7.5 mrem in a quarter 3.8.G.1 Organ dose 15 mrem in a year c. Licuids 3.8.B.1 Total body dose 1.5 mrem in a quarter 3.8.B.1 Total body dose 3 mrem in a year 3.8.B.1 Organ dose 5 mrem in a quarter 3.8.B.1 Organ dose 10 mrem in a year urao A-1

APPENDIX A (Continued) EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT 2A. TECHNICAL SPECIFICATION LIMITS - CONCENTRATION Technical Specification and Catecory limit a. Noble Gar,el No MPC limits b. lodine-131, lodine-133, Tritium and Radionuclides in Particulate Form With Half-lives Greater Than 8 Days No MPC limits C. Liouids 3.8.A.1 Total fraction of MPC excluding noble gases (10CFR20, Appendix B. Table II, Column 2): 11.0 3.8.A.1 Total noble gas concentration: 12E-04 uCi/cc 3. AVERAGE ENERGY Provided below are the average energy (E) of the radionuclide mixture in releases of fission and activation gases, if applicable. 2. Average gamma energy: 3rd Quarter 1.11E+00 MeV/ dis 4th Quarter 1.11E+00 MeV/ dis D. Average beta energy: Not Applicable 4. MEASUREMENTS AND APPROXIMATIONS OF TOTAL RADIDACTIVITY Previded below are the methods used to measure or approximate the total radioactivity in effluents and the methods used to determine radionuclide Composition. A-2 uzua

I' APPENDIX A (Continued) EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT P a. Fission and Activation Gases Continuous stack monitors monitor gross Noble Gas radioactivity I released from the plant stack. Total Noble Gas release rates are i calculated using this monitor. To determine the isotopic breakdown of the release, samples are taken of the Steam Jet Air Ejector, which is the source gas for the releases. These samples are analyzed by gamma spectroscopy to determine the isotopic composition. The isotopic composition is then proportioned to the f gross releases determined from the stack monitor to quantify the individual isotopic releases. These are indicated in Table IB and the totals of Table IA. Beginning in the fourth quarter of 1991. grab samples were obtained from the Turbine Building roof vents. In July only Xe-135m was detected in the samples. The remainder of the gases indicated were calculated by ratioing the indicated Xe-135m to the other gases using the Steam Jet Air Ejector samples. In September, only Xe-135 was detected in the samples. The remainder of the gases indicated were calculated by ratioing the indicated Xe-135 to the other gases using the Steam Jet Air Ejector samples. For the remainder of this reporting period, only Cs-138 was detected in the samples. The remainder of the gases indicated were calculated by assuming Cs-138 solely from the decay of Xe-138 and then ratioing Xe-138 to the other gases using the Steam Jet Air Ejector samples. These results are indicated in Table IC and the totals of Table 1A. The error involved in these steps may be approximately +100 percent. b. Iodines Continuous isokinetic samples are drawn from the plant stack through a particulate filter and charcoal cartridge. Beginning in the fourth quarter of 1991. continuous particulate and charccal samples were also taken at the Turbine Building roof vents. The filters and cartridges are normally removed weekly and are analyzed for A-3 cruo

.~ i APPENDIX A (Continued) l EFFLUENT AND WASTE' DISPOSAL SEMIANNUAL REPORT i Iodine-131, 132. 133, 134, and 135. The error-involved in these steps may be approximately 150 percent. c. Particulates l The particulate filters described in b. above are also counted for particulate radioactivity. The error involved in this sample is } also approximately 150 percent. i d. Liouid Effluents ~ Radioactive liquid effluents released from the facility are l continuously monitored. Measurements are also made on a l representative sample of each batch of radioactive liquid effluents released. For each batch, station records are retained of the total { activity (mci) released, concentration (uCi/ml) of gross radioactivity, volume (liters), and approximate total quantity of water (liters) used to dilute the liquid effluent _ prior to- 'elease f to the Connecticut River. t i Each batch of radioactive liquid effluent releases is analyzed for gross gamma and gamma isotopic radioactivity, A monthly proportional composite sample, comprising an aliquot of each batch released during a month, is analyzed for tritium and' gross alpha radioactivity. A quarterly proportional composite sample, comprising an aliquot of each batch released during a quarter, is analyzed for Sr-89. Sr-90, and Fe-55. 1 5. BATCH RELEASES a. Licuid i l There were no routine liquid batch releases during the reporting i period. I i 4 m

-6 i APPENDIX A (Continued) I EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT f b. Gaseous 9 r There were no routine gaseous batch releases during the reporting period. 6. ABNORMAL RELEASES l a. Liouid On August 14, 1992, the Turbine Building sump water was contaminated with radioactivity by an accidental overflow of the Condensate Demineralizer Backwash Receiving Tank and was inadvertently pumped to the discharge structure for approximately 45 minutes. The total. activity of released radioactive materials was 7.49E-05 curies. The activity values are included in Tables 2A and 2B. b. Gaseous i There were no nonroutine gaseous releases during the reporting period. i i I I i i l A-5 cruc

APPENDIX B LIQUID HOLDUP TANKS Reovirement: Technical Specification 3.8.D.1 limits the quantity of l radioactive material contained in any outside tank. With the quantity of radioactive material ~in any outside tank exceeding i the limits of Technical Specification 3.8.D.I. a description of the events leading to this condition is required in the next Semiannual Effluent Release Report per Technical Specification l 6.7.C.I.

Response

The limits of Technical Specification 3.8.D.1 were not exceeded l during this reporting period. j l l 4 i f i I I h -i i t I i { i i A i nzac B-1 L i m.

.'i i i APPENDIX C .t RADI0 ACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION t Requirement: Radioactive liquid effluent monitoring instrumentation channels l are required to be operable in accordance with Technical Specification Table 3.9.1. If an inoperable radioactive liquid effluent monitoring instrument is not returned to operable status prior to a release pursuant to Note 4 of Table 3.9.1, an i explanation in the next Semiannual Effluent Release Report of the [ reason (s) for delay in correcting the inoperability are required f I per Technical Specification 6.7.C.I.

Response

Since the requirements of Technical Specification Table 3.9.1 [ l governing the operability of radioactive liquid effluent monitoring instrumentation were met for this reporting period, no l response is required. l [ I l I i y i [ i I I i l t i 1 L l m,eo C-1 l \\

i APPENDIX D J l RADIDACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION f Recuirement: Radioactive gaseous effluent monitoring instrumentation channels j are required to be operable in accordance with Technical-Specification Table 3.9.2. If inoperable gaseous effluent ~ monitoring instrumentation is not returned to operable status within 30 days pursuant to Note S of Table 3.9.2, an explanation in the next Semiannual Effluent Release Report of the reason (s) i for the delay in correcting the inoperability is required per l Technical Specification 6.7.C.I. f

Response

Since the requirements of Technical Specification Table 3.9.2 i governing the operability of radioactive gaseous effluent j monitoring instrumentation were met for this reporting period, no j response is required. L i f i [ i ( P I m2ao D-1 i t w

i APPENDIX E t RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM I i 'Recuirement: The radiological environmental monitoring program is conducted in l l accordance with Technical Specification 3.9.C. With milk samples j no longer available from one or more of the sample locations [ required by Technical Specification Table 3.9.3. Technical I Specification 6.7.C.1 requires the following to be included in the next Semiannual Effluent Release Report: (1) identify the f cause(s) of the sample (s) no longer being available. (2) identi fy the new location (s) for obtaining available replacement samples f and (3) include revised ODCM figure (s) and table (s) reflecting [ the new location (s).

Response

Milk samples were available at all locations identified in i Table 4.1 of the ODCM during the third and fourth quarters of i 1992. I I i f 5 t 1 t l 1 I i I } I l l 1 l l E-1 l uruo i i

i APPENDIX F ) LAND USE CENSUS i Recuirement: A land use census is conducted in accordance with Technical Specification 3.9.D. With a land use census identifying a location (s) which yields at least a 20 percent greater dose or l dose commitment than the values currently being calculated in l Technical Specification 4.8.G.1, Technical Specification 6.7.C.1 requires the identification of the new location (s) in the next Semiannual Effluent Release Report. ResDonse: No locations were identified by the 1992 land use census that would yield at least a 20 percent greater dose or dose commitment than the values currently being calculated pursuant to Technical Specification 4.8.G.I. l r i i 9 F I i l l I f a m so p.1 i r f

6 APPENDIX G PROCESS CONTROL PROGRAM i Recuirement: Technical Specification 6.12. A.1 requires that licensee initiated l changes to the Process Control Program (PCP) be submitted to the j Commission in the Semiannual Radioactive Effluent Release Report l i for the period in which the change (s) was made.

Response

There were no licensee initiated changes to the Process Control Program during this reporting period. I i l t k ? 2 4 I i ,i r e f I d ? h i i ) b l t l l I. 5 l b l i i i l ntao G-1 i i l

l i APPENDIX H l i 0FF-SITE DOSE CALCULATION MANUAL j Recuirement: Technical Specification 6.13. A.1 requires that licensee initiated [ changes to the Off-Site Dose Calculation Manual (0DCM) be submitted to the Commission in th'e Semiannual Radioactive Effluent Release Report for the period in which the change (s) was made effective.

Response

There were no revisions to the Off-Site Dose Calculation Manual during this reporting period. 4 \\ t L t t niac H-1 I I

APPENDIX 1 RADICACTIVE LIOUID, GASEOUS AND SOLID WASTE li: iT SYSTEMS Recuirement: Technical Specification 6.14. A requires that licensee initiated major changes to the racioactive waste systems (liquid, gaseous, and solid) be : eported to the Commission in the Semiannual Radioactive Effluent Release Report for the period in which the evaluation was reviewed by the Plant Operation Review Committee.

Response

There were no licensee initiated major changes to the radioactive waste systems (liquid, gasecus, and solid) during this reporting period. un6o 1-1

APPENDIX J ON-SITE DISPOSAL OF SEPTIC WASTE Reovirenent: Off-Site Dose Calculational Manual. Appendix B requires that the dose impact due to on-site disposal of septic waste during the reporting year and from previous years be reported to the Commission in the Semiannual Radioactive Effluent Report filed after January 1, if disposals occur during the reporting year.

Response

There was one on-site disposal of septic waste during the reporting year. The total volume of Septage spread was approximately 8,000 gallons. The total activity spread on the 1.9 acres (southern) on-site disposal field during 1992 and from previous years was: Nuclide Activitv (Ci) Mn-54 2.77E-07 Co-60 1.20E-05 Zn-65 1.08E-06 Cs-134 9.EBE-08 Cs 137 1.60E-06 Ce-141 2.66E-14 The projected hypothetical dose from on-site disposals of Septic waste is 1.63E-02 mrem / year. This dose was calculated according to the model and the assumptions of Off-Site Dose Calcula?.icnal Manual. Appendix B. oruo J-1 ___}}

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