Text

Effluent & Waste Disposal Semiannual Rept for Third & Fourth Quarters,1988 Including Annual Radiological Impact on Man for 1988, Supplemental Rept
	ML20244D578
Person / Time
Site:	Vermont Yankee
Issue date:	12/31/1988
From:	Capstick R; VERMONT YANKEE NUCLEAR POWER CORP.
To:	; NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
	BVY-89-37, NUDOCS 8904240016
	Download: ML20244D578 (43)
	v • d • e

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SUPPLEMENTAL REPORT EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT FOR THIRD AND FOURTH QUARTERS, 1988 I INCLUDING ANNUAL RADIOLOGICAL IMPACT ON MAN FOR 1988 I &

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I In the Vermont Yankee Effluent and Waste Disposal Semiannual Report covering

, the first and second quarters of 1988, the following corrections should be ll -made: !

-None.

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TABLE OF CONTENTS fage ERRATA........................................................... ii

1.0 INTRODUCTION

..................................................... 1 2.0 METEOROLOGICAL DATA.............................................. 2 3.0 DOSE ASSESSMENT.................................................. 3 3.1 Doses From Liquid Effluents................................ 3 3.2 Doses From Noble Gases..................................... 3 3.3 Doses from Iodine-131. Iodine-133, Tritium and l I 3.4 Radionuclides in Particulate Form With Half-Lives Greater Than 8 Days................................................

Whole Body Doses in Unrestricted Areas From Direct 3

Radiation.................................................. 5 REFERENCES....................................................... 8 TABLES........................................................... 9 APPENDIX A - SUPPLEMENTAL INFORMATION.................................. A-1 APPENDIX B - LIQUID HOLDUP TANKS....................................... B-1 I APPENDIX C - RADI0 ACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION............-.............................. C-1 APPENDIX D - RADI0 ACTIVE GASEOUS EFFLUENT MONITORING I INSTRUMENTATION...........................................

APPENDIX E - RADIOL 0uICAL ENVIRONMENTAL MONITORING PROGRAM.............

D-1 E-1 APPENDIX F - LAND USE CENSUS........................................... F-1 APPENDIX G - PROCESS CONTROL PR0 GRAM................................... G-1 APPENDIX H - 0FF-SITE DOSE CALCULATION MANUAL.......................... H-1 I APPENDIX I - RADI0 ACTIVE LIQUID, GASEOUS AND SOLID WASTE TREAIMENT SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 E

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I JJST OF TABLES Eumher Iltle Ease Gaseous Effluents - Summation Of All Releases 9 I 1A 1B 10 Gaseous Effluents - Elevated Releases Gaseous Effluents - Ground Level Releases 10 11 12 1D Gaseous Effluents - Nonroutine Releases I 2A 2B Liquid Effluents - Summation Of All Releases Liquid Effluents - Nonroutine Releases 13 14 3 Solid Waste and Irradiated Fuel Shipments 15

! 4 Maximum Off-Site Doses and Dose Commitments to Members of the Public 16-17 5A to SH Annual Summary of Upper Level Joint Frequency Distribution 18-25 I

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I VERMONT YANKEE NUCLEAR POWER GTATION SEMIANNUAL EFFLUENT RELEASE REPORT JULY - DECEMBER 1988

1.0 INTRODUCTION

Tables 1 through 3 list the recorded radioactive liquid and gaseous effluents and solid waste for the second six months of the year, with data summarized on a quarterly basis. Table summarizes the estimated radiological dose commitments from all radioactive liquid and gaseous effluents released during the year 1988. Tables SA through 5H report the I cumulative joint frequency distributions of wind speed, wind direction, and atmospheric stability for the 12-month period, January to December 1988.

I Radioactive effluents reported in the Semiannual Effluent Report covering the first six months of the year were used to determine the resulting doses for the first half of 1988.

As required by Technical Specification 6.7.C.1 dose commitments resulting from the release of radioactive materials in liquids and gases were estimated in accordance with the " Vermont Yankee Nuclear Power Station I Off-Site Dose Calculation Manual" (ODCM). These dose estimates were made using a " Method II" analysis as descrioed in the ODCM. A " Method II" analysis I incorporates the methodology of Regulatory Guide 1.109 (Reference 1) and actual measured meteorological data recorded during the reporting period.

As required by Technical Specification 6.7.C.1.b, this report shall also include an assessment of the radiation doses from radioactive effluents to member (s) of the public due to allowed recreational activities inside the i

g site boundary during the year. However, for this reporting period no

" recreational activities inside the site boundary were permitted, and, as a result, no dose assessments are required.

Assessment of radiation doses (including direct radiation) to the l

likely most exposed real member (s) of the public for the calendar year for the l

purposes of demonstrating conformance with 40CFR190, " Environmental Radiation Protection Standards for Nuclear Power Operations," are also required to be

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I included in this report if the conditions indicated in Technical g Specification 3.8.M.1, " Total Dose " have been exceeded during the year.

E Since the conditions indicated in the action statement under Technical Specification 3.8.M.2 were not entered into during the year, no additional radiation dose assessments are required.

All calculated dose estimates for this reporting period are well below the dose criteria of 10 CFR Part 50, Appendix I.

E Appendices B through H indicate the status of reportable items per the requirements of Technical Specif1 cations 6.7.C.1 and 6.14.A.

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I 2.0 MEIEQR0 LOGICAL DATA Meteorological data was collected during this reporting period from the site's 300-foot met tower located approximately 2,200 feet northwest of the I

l I reactor building, and about 1,400 feet f rom the plant stack. The 300-foot tower is approximately the same height as the primary plant stack (94 meters) and is designed to meet the requirements of Regulatory Guide 1.23 for l meteorological monitoring.

X/Q and D/Q values were derived for all receptor points from the site meteorological record for each quarter using a straight-line airflow model.

I All dispersion factors have been calculated employing appropriate source configuration considerations, as described in Regulatory Guide 1.111

.I (Reference 1). A source depletion model as described in ' Meteorology and Atomic Energy - 1968" (Reference 2) was used to generate deposition factors, assuming a constant deposition velocity of 0.01 m/sec. Changes in terrain elevations in the site environment were also factored into the meteorological models, b

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I' 3.0 POSE ASSESSMENI 3.1 Doses From Liquid Effluents There were no routine or accidental liquid releases from Vermont Yankee during 1988. As a result, no receiving water exposure pathways could contribute to any whole body or organ doses to individuals in unrestricted areas.

I 3.2 Doses From Noble GaERS Technical Specification 3.8.F.1 limits the gamma air dose (5 mrad per quarter, and 10 mrad per year) and beta air (10 mrad per quarter, and 20 mrad per year) dose from noble gases released in gaseous effluents from the site to areas at and beyond the site boundary to those specified in 10 CFR Part 50, Appendix I. By implementing the requirements of 10 CFR Part 50, Appendix I, Technical Specification 3.8.F.1 assures that the releases of radioactive noble gases in gaseous effluents will be kept "as low as is reasonably achievable."

Dose estimates due to the release of noble gases to the atmosphere are I typically calculated at the site boundary, and nearest resident in each of the sixteen prine,iple compass directions, as well as the point of highest off-site ground level air concentration of radioactive materials, and for each of the milk animal locations located within five miles of the plant. However, since no noble gases were reported as being above their lower limit of detectability (LLD) for this reporting period, no gamma and beta air doses were determined.

I 3.3 Doses From Iodine-131. Tritium and Radionuclides in Particulate Form With

' Half-Lives Greater Than 8 Days l

Technical Specification 3.8.G.1 limits the organ dose to a member of the public from iodine-131, iodine-133, tritium and radionuclides in l5 1 4436R I

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particulate form with half-lives greater than 8 days (hereafter called iodines and particulate) in gaseous effluents released from the site to areas at and beyond the site boundary to those specified in 10 CFR Part 50, Appendix I (7.5 mrem per quarter, and 15 mrem per year). By implementing the requirements of 10 CFR Part 50, Appendix I, Technical Specification 3.8.G.1 assures that the releases of iodines and particulate in gaseous effluents will be kept "as low as is reasonably achievable."

Exposure pathways that'could exist as a result of the release of iodines and particulate to the atmosphere include external irradiation from activity deposited onto the ground surface, inhalation, and ingestion of vegetables, meat and milk. Dose estimates were made at the site boundary and nearest resident in each of the sixteen principle compass directions, as well as all milk animal locations within five miles of the plant. The nearest resident and milk animals in each sector were identified by the most recent Annual Land Use Census as required by Technical Specification 3.9.D.

Conservatively, a vegetable garden was assumed to exist at each milk animal and nearest resident location. Furthermore, the meat pathway was assumed to exist at each milk animal location. Doses were also calculated at the point of maximum ground level air concentration of radioactive materials in gaseous effluents and included the assumption that the inhalation, vegetable garden, and ground plane exposure pathways exist for an individual with a 100 percent occupancy factor.

It is assumed that milk and meat animals are free to graze on open pasture during the second and third quarters with no supplemental feeding.

This assumption is conservative since most of the milk animals inventoried in the site vicinity are fed stored feed throughout the entire year with only l

limited grazing allowed during the growing season. It has also been assumed l

/ that only 50 percent of the iodine deposited from gaseous effluent is in elemental form (1 ) and is available for uptake (see p. 26, Reference 4).

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{ During the first and fourth quarters, the milk animals are assumed to receive only stored feed.

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I The resultant organ doses were determined after adding the contributions from all pathways at each location. Doses were calculated for the whole body, GI-tract, bone, liver, kidney, thyroid, lung and skin for adults, teenagers, children and infants. The maximum estimated quarterly and

{I annual organ doses to any age group due to iodines and particulate at any of the off-site receptor locations are reported in Table 4. These estimated organ doses are well below the 10 CFR Part 50, Appendix I dose criteria of Technical Specification 3.8.G.I.

3.4 Whnic-Endy Doses in Unrestricted arnas From Direct Radiation lI The major source of dose, consisting of direct radiation and sky shine, from the station is due to N-16 decay in the turbine building. Because of the g

5 orientation of the turbine building on the site, and the shielding effects of the adjacent reactor building, only the seven westerly sectors (SSW to NNW) see any significant direct radiation.

High Pressure Ionization Chamber (HPIC) measurements have been made in the plant area in order to estimate the direct radiation from the station.

The chamber was located at a point along the west site boundary which has been determined to receive the maximum direct radiation from the plant. Using measurements of dose rate made while the plant operated at different power I levels, from shutdown to 100 percent, the total integrated dose from direct radiation over each three month period was determined by considering the quarterly gross megawatts generated. Field measurements of exposure, in units of Roentgen, were modified by multiplying by 0.6 to obtain whole-body dose equivalents, in units of rem, in accordance with recommendations of HASL Report 305 (Reference 5) for radiation fields resulting from N-16 photons.

I Another source of dose, including direct radiation and sky shine, to the site boundary is from low level radioactive waste temporarily stored in the north warehouse. The annual dose is based on a dose per unit curie of waste stored in the north warehouse and determined at the same most restrictive site bounc'ary dose location as that for N-16 shine from the Turbine Building.

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The estimated direct radiation dose from all major sources combined for g the most limiting site boundary location is listed on Table 4 for each

quarter. These site boundary doses assume a 100 percent occupancy factor, and take no credit for the shielding effect of any structure.

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I I REFERENCES l I 1. Regulatory Guide 1.111. " Methods for Estimating Atmospheric Transport and I Dispersion of Gaseous Effluents in Routine Releases from Light-Water-Cooled Reactors", U.S. Nuclear Regulatory Commission, Office of Standards Development, March 1976.

I 2. Meteorology and Atomic Energy, 1968, Section 5-3.2.2, " Cloud Depletion",

pg. 204. U. S. Atomic Energy Commission, July 1968.

3. C. A. Pelletier, and J. D. Zimbrick, " Kinetics of Environmental I Radiciodine Transport Through the Milk-Food Chain", Environmental SurveA11ance in the Vicinity of Nuclear Facilities, Charles D. Thomas Publishers, Springfield, Illinois,1970.

4. Regulatory Guide 1.109, " Calculation of Annual Doses to Man From Routine Release of Reactor Effluents for the Purpose of Evaluating Compliance with 10CFR Part 50, Appendix I", U. S. Nuclear Regulatory Commission, Office of Standards Development, Revir, ion 1, October 1977.

I 5. W. M. Lowder, P. D. Raft, and G. dePlanque Burke, " Determination of N-16 Garama Radiation Fields at BWR Nuclear Power Stations", Health and Safety i Laboratory, Energy Research and Development Administration, Report No.

305, May 1976.

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_p TABLE 1A Vermont Yankee Effluent and Waste Disposal Samiannumi Report Third and Fourth Oniarters. 1988 Gaseous Effluents - Si - -tion of All Releases Unit : Quarter Quarter Est. Total 3 4 Error. 1

'A. Fission and Activation Gases

1. Total release C1 ND ND *1.00E+02

2. Average release rate for oeriod uC1/see- ND ND

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

B. Iodines

1. Total Iodine-131 C1 2.68E-03 1.37E-04 e5.00E+01

2. Averane release rate for period uC1/sec 3.41E-04 1.74E-05

3. Percent of Tech. Spec.' limit (2) 1 1.33E+00 3.45E-02 h

C. Particulate

1. Particulate with T-1/2 > 8 days 01 6.17E-04 8.65E-05 *5.00E+01

2. Average release rate for period uC1/sec 3.92E-05 5.50E-06

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

4. Gross alpha radioactivity 01 3.20E-06 3.27E-06 D. Tritium

1. Total release C1 1.38E+01 1.55E+01 e5.00E+01

2. Averane release rate fgr_ period uC1/see 1.76E+00 1.97E+00

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

9. (1) Technical Specification 3.8.F.1.a for gasuna air dose. Percent values for Technical Specification 3.8.F.1.a not applicable since no noble gases were detected.

.(2). Technical Specification 3.8.G.1 for dose from I-131. I-133 Tricium, and radionuclides in particulate form.

(3) Per Technical Specification 3.8.G.1, dose contribution from Tritisse and particulate are included with I-131 above in Part B.

ND Not Detected.

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7ABLE LB yermont Yankee Effluent and Waste Disposal Semiannual Report

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Third and Fourth Ouarters. 1988 Gaseous Effluents - Elevated Relegge (1)

Continuous Mode Batch Mode Nuclides Released Unit _ Quarter Quarter Quarter Quarter 3 4 3 4

1. Fission Gases I __Eryplon-85 Krypton-85m Ci C1 Ci ND ND ND ND ND Jtypton-87 ND Kryplan-88 Ci ND ND I Xenon-133 Ci ND ND Xenon-135 Ci ND ND Ci I __Xennn-135m ND ND Xenon-138 Ci ND ND Ci Unidentified Ci Total for period Ci ND ND i

2. Iodines _

Iodine-131 Ci 2.67E-03 1.37E-04 I Iodine-133 Ci 6.18E-04 3.64E-03 Indine-135 Cl ND ND Total for oeriod C1 3.29E-03 3.78E-03 3_._ Particulate J ir0Atium-89 Ci 3.72E-05 4.28E-05 I Strontium-90 Cesium-134 Cesium-137 Ci C1 Ci ND 2.78E-05 6.49E-05 2.08E-06 ND 3.08E-05 I Barium-Lanthanum-140 Manganese-54 Zine-65 C1 C1 C1 ND 1.98E-05 1.48E-05 ND 7.94E-06 ND Cobalt-58 C1 9.78E-07 ND Cobalt-60 01 4.52E-04 2.85E-06 I

(1) There were no batch mode gaseous releases for this reporting period.

ND - Not detected at the plant stack.

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I' TABLE E Vermont Yankee Effluent and Waste Disposal Semiannual Report Third and Fourth Ouarters 1988 Gaseous Effluents - Ground Level Releases There were no routine measured ground level continuous or batch mode gaseous I

releases during the third or fourth quarters of 1988.

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I TABLE ID Vermont Yanken Effluent and Waste Disposal Semiannual Report Third and Fourth Ouarters 1988

""""""""""'"~"-""""""~"

I B .... .... .. _ _ u.. .. . 1e..to .... _ . 1..... .s.,t,. m ,e , , _ ts

, ,_ t... ,1,ee.

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I TABLE 2A Vermont Yankee Effluent and Waste Disposal Semiannual Report Third and Fourth Ouarters 1933 Liquid Effluento - Nonroutine Releases l 1s... .. . . 11,.ie . 1..... e. 1.,t,. tsi,e . ,...ts , .t... .f 1,ee.

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I TABLE 2B Vermont Yankee Effluent and Waste Disposal Semiannual Report Third and Fourth Ouarters 1988 Liquid Effluents - Nonroutine Releases There were no nonroutine or accidental releases during the third or fourth quarters of 1988.

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I TABLE 3 Vn mont Yankee Effluent and Waste Disposal Sec,lannual Report Third and Fourth Ouarters. 1988 Solid Waste and Irradiated Fuel Shloments

" A. Solid Waste Shipped Off-Site for Burial or Disposal (Not Irradiated Fuel)

Unit 6-Month Est. Total Period Error. %

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1. Type of Waste

! a. Spent resins, filter sluages, evaporator m3 4.35E+01 batioma. etc. C1 2.51E+02 7.10E+01

!= b. Dry compressible waste, contaminated m3 4.72E+01 equipmEn u te. C1 3.29E+00 7.50E+01

c. Irradiated components, control rods, m3 I etc. Ci

2. Estimate of Major Nuclide Composition (By Type of Waste)

n. Zinc-65 % 2.72E101 Zirconium-95 % 2.58E-03 Iron-55 % 2.3BE+01 Transuranic % 1.35E-03 Cobalt-60 % 1.99E+01 Curium-242 % 6.17E-05

.I Cesium-137 Cesium-134

% 1.31E+01

% 5.63E+Q0

b. Cobalt-60 Iron-55

% 4.91E+01

% 4.00E+01 Manganese-54 % 5.21E+00 Cesium-137 % 5.05E+00

% 2.56E+00 5 Nickel-63 Cohnit-53

% 2.32E+00

% 1.13E+00 Manganese-54 Zine-65 % 2d6E+00 Silver-110m % 7.58E-01 Cesium-134 % 3.46E-01 Chromium-51 % 4.25E-01 Hydrogen-3 % 3.30E-01 I Iron-59 % 1.62E-01 Plutonium-241 % 2.49E-01 Niobium-95 % 1.27E-01 Strontium-90 % 5.90E-02 I flydrogen-3 Pi tttonium-241 Carhoo-14

% 1.03E-01

% 7.57E-02

% 7.47E-02 Cobalt-58 Zirconium-95 Technetium-99

% 5.33E-02

% 4.97E-02

% 1.54E-02 Strontium-90 % 5.21E-02 Carbon-14 % 1.25E-02 i Iodine-131 Technetium-99 Iodine-129

% 2.51E-02

% 8.90E-03

% 5.14E-03 Transuranic Iodine-129 Curium-242

% 1.20E-02

% 1.67E-03

% 1.83E-04

3. Solid Waste Disposition Number of Shloments Mode of Transportation Destination i 11 Truck Barnwell, SC B. Irradiated Fuel Shipments (Disposition): None C. Supplemental information

1) Class of solid waste containers shipped: 4A, 5B, 2A (unstable)

I 2) Types of containers used: 9 Type A, 2 Strong-tight-container

3) Solidification agent or absorbent: None TABLE 4 Vermont Yankee Effluent and Waste Disposal Semiannual Report Third and Fourth Ouarters. 1988 Maximum

Off-Site Doses and Dose Commitments to Members of the Public Dose (mrem)***

ist 2nd 3rd 4th Year **

I __Egntce Ouarter Ouarter Quarter Ouarter Liquid Effluents (a) - - -

l Airborne Effluents Iodines and Particulate 4.59E-03 2.42E-02 1.00E-01 2.59E-03 1.31E-01 (1) (2) (3) (4)

'I Noble Cases Beta Air (mrad) (b) - -- -- -- -

I Gamma Air (mrad) (b) -- -- -- -- --

Whole Body Dose from Facility Direct Radiation (mrem) 4.40E+00 4.01E+00 3.75E+00 4.37E+00 1.65E+01

" Maximum" means the largest fraction of corresponding 10CFR50, Appendix I, dose I design objectise.

- " Maximum" dose for the year is the sum of the maximum doses for each quarter.

I This results in a conservative yearly dose estimate, but still well within the limits of 10CFR50.

- - The numbered footnotes indicate the location of the dose receptor, age group, I and organ, where appropriate.

(1) Teen /GI-III, NW-2900 meters.

I (2) Infant / Thyroid, NW-4700 meters.

(3) Infant / Thyroid, NW-4700 meters.

(4) Child / Thyroid, NW-2900 meters.

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I TABLE 4 (Continued)

I (a) There were no liquid releases during this reporting period.

(b) There were no detectable noble gases above the lower limit of detection for effluents released from the cite during this reporting period.

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t TABLE 5A B

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VERMONT YANKEE JAN88-DEC88 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION ,'

297.0 FT WIND DATA STABILITY CLASS A CLASS 'REQUENCY (PERCENT) = .63 l

WIND DIRECTION FROM SPEED (MPH) N NNE NE ENE E ESE SE SSE S SSW SW WSW W W.! 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 5 (2) 00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ,

0 0 0 0 0 0 I

C-3 1 0 0 0 0 0 0 0 0 0 0 1 (1) 2.38 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 2.38 (2) .02 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 47 0 0 0 0 0 2 1 1 0 0 0 0 0 0 0 0 0 4 5 (1) .00 .00 .00 .00 .00 4.76 2.38 2.38 .00 .00 .00 .00 .00 .00 .00 .00 .00 9.52 (2) .00 .00 .00 .00 .00 .03 .02 .02 .00 .00 .00 .00 .00 .00 .00 .00 .00 .06 g 8 12 4 0 0 0 0 0 2 2 8 2 0 0 3 1 1 0 0 23 (1) 9.52 .00 .00 .00 .00 .00 4.76 4.76 19.05 4.76 .00 .00 7.14 2.38 2.38 .00 .00 54.76 (2) .06 .00 .00 .00 .00 .00 .03 .03 .12 .03 .00 .00 .05 .02 .02 .00 .00 .35 13 18 1 0 0 0 0 0 0 0 4 0 0 0 0 2 0 1 0 8 (1) 2.38 .00 .00 .00 .00 .00 .00 .00 9.52 .00 .00 .00 .00 4.76 .00 2.38 .00 19.05 (2) .02 .00 .00 .00 .00 .00 .00 .00 .06 .00 .00 .00 .00 .03 .00 .02 .00 .12 19-24 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 3 0 5 (1) .00 .00 .00 .00 .00 .00 .00 .00 2.38 .00 .00 .00 .00 .00 2.38 7.14 .00 11.90 5 (2) .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .00 .00 .00 .02 .05 .00 .08 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 2.38 .00 2.38 w (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .02 ALL SPEEDS 6 0 0 0 0 2 3 3 13 2 0 0 3 3 2 5 0 42 i (1) 14.29 (2) .09

.00

.00 4.76 7.14 7.14 30.95 4.76

.00 .03 .05 .05 .20 .03

.00

.00 7.14 7.14 4.76 11.90

.00 .05 .05 .03 .08

.00 100.00

.00 .63 (1): PERCENT OF ALL 0000 NJSERVATIONS FOR THIS PAGE (2): PERCENT OF ALL C000 OBSERVAil0NS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .60 MPH)

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I l VERMONT YANKEE JAN88 DEC88 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION y

297.0 FT WIND DATA STABILITY CLASS B CLASS FREQUENCY (PERCENI) = 1.15 WIND DIRECTION FROM SPEED (MPH) N NNE NE ENE E ESE SE SSE S $$W SW WSW W WNW NW NNW VR8L 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 2 0 0 0 0 0 0 0 0 0 6 I

1 1 1 1 (1) .00 1.32 .00 1.32 .00 1.32 2.63 1.32 .00 .00 .00 .00 .00 .00 .00 .00 .00 7.89 ,

(2) .00 .02 .00 .02 .00 .02 .03 .02 .00 .00 .00 .00 .00 .00 .00 .00 .00 .09 47 2 1 1 0 1 3 1 2 0 0 1 0 1 1 . 0 0 15

'l m (1) 2.63 1.32 1.32 .00 1.32 3.95 1.32 2.63 .00 .00 1.32 .00 1.32 1.32 1.32 .00 .00 19.74 (2) .03 .02 .02 .00 .02 .05 .02 .03 .00 .00 .02 .00 .02 .02 .02 .00 .00 .23 i 8 12 4 1 1 0 0 0 0 1 4 1 1 0 3 2 0 4 0 22 (1) 5.26 1.32 1.32 .00 .00 .00 .00 1.32 5.26 1.32 1.32 .00 3.95 2.63 .00 5.26 .00 28.95 (2) .06 .02 .02 .00 .00 .00 .00 .02 .06 .02 .02 .00 .05 .03 .00 .06 .00 .33 I 13-18 (1) 2 2.63 2.63 2

.00 0

.00 0 0 4

.00 5.26 1.32 1

.00 0

.00 0 0 1

.00 1.32 1.32 3.95 1 3

.00 0

18.42 14 (2) .03 .03 .00 .00 .00 .00 .00 .00 .06 .02 .00 .00 .00 .02 .02 .05 .00 .21 19-24 5 0 0 0 0 0 0 0 1 0 0 0 0 2 2 6 0 16 9 (1) 6.58 .00 .00 .00 .00 .00 .00 .00 1.32 .00 .00 .00 .00 2.63 2.63 7.89 .00 21.05 I GT 24 (2) .08 1

.00 0

.02 0

.00 0

.03 0

.09 2

.00 0

.24 3

(1) 1.32 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 2.63 .00 3.95 I (2) .02 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .03 .00 .05 ALL SPEEDS 14 5 2 1 1 4 3 4 9 2 2 0 4 6 4 15 0 76 (1) 18.42 6.58 2.63 1.32 1.32 5.26 3.95 5.26 11.84 2.63 2.63 .00 5.26 7.89 5.26 19.74 .00 100.00 I (2) .21 .08 .03 .02 .02 .06 .05 .06 .14 .03 .03 .00 .06 .09 .06 .23 .00 1.15 e

1)= PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE E (2)sPERCENT OF ALL C000 OBSERVATIONS

( FOR C= CALM THl$

(WIND SPEEDPERIOD LESS THAN OR EQUAL TO .60 MPH)

I

TABLE SC I

I I

VERMONT YANKEE JAN88 DEC88 METEOROLOGICAL DATA JolNT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS C CLASS FREQUENCY (PERCENT) = 2.87 WIND DIRECTION FROM SPEED (MPH) N NNE NE ENE E ESE SE SSE $ SSW SW WSW W WNW NW NNW VRBL TOTAL CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 I (1)

(2)

.00

.00 I C-3 1 0 2 0 1 1 3 1 0 1 1 0 0 0 0 1 0 12 (1) .53 .00 1.05 .00 .53 .53 1.58 .53 .00 .53 .53 .00 .00 .00 .00 .53 .00 6.32 (2) .02 .00 .03 .00 .02 .02 .05 .02 .00 .02 .02 .00 .00 .00 .00 .02 .00 .18 4-7 3 1 1 0 1 2 6 5 3 1 0 1 0 0 2 3 0 29 (1) 1.58 .53 .53 .00 .53 1.05 3.16 2.63 1.58 .53 .00 .53 .00 .00 1.05 1.58 .00 15.26 (2) .05 .02 .02 .00 .02 .03 .09 .08 .05 .02 .00 .02 .00 .00 .03 .05 .00 .44 8-12 5 5 1 0 0 1 1 4 12 6 3 2 5 3 4 8 0 60 (1) 2.63 2.63 .53 .00 .00 .53 .53 2.11 6.32 3.16 1.58 1.05 2.63 1.58 2.11 4.21 .00 31.58 (2) .08 08 .02 .00 .00 .02 .02 .06 .18 .09 .05 .03 .08 .05 .06 .12 .00 .91 13 18 9 4 0 0 0 0 1 1 6 5 3 0 6 8 2 14 0 59 (1) 4.74 2.11 .00 .00 .00 .00 .53 .53 3.16 2.63 1.58 .00 3.16 4.21 1.05 7.37 .00 31.05 (2) .14 .06 .00 .00 .00 .00 .02 .02 .09 .08 .05 .00 .09 .12 .03 .21 .00 .89 19-24 3 0 0 0 0 0 0 0 1 1 0 0 2 1 6 11 0 25 I (1)

(2) 1.58

.05

.00

.53

.02

.53

.02

.00

.00 1.05

.00 .03

.53 3.16 5.79

.02 .09 .17

.00

.00 13.16

.38 GT 24 2 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 5 (1) 1.05 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .53 .53 .53 .00 2.63 i (2) 03 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .02 .02 .00 .08 ALL SPEEDS 23 10 4 0 2 4 11 11 22 14 7 3 13 13 15 38 0 190 I (1) 12.11 5.26 2.11 .00 1.05 2.11 5.79 5.79 11.58 7.37 3.68 1.58 6.84 6.84 7.89 20.00 .00 100.00 (2) .35 15 .06 .00 .03 .06 .17 .17 .33 .21 .11 .05 .20 .20 .23 .57 .00 2.87 (1) PERCENT OF ALL C000 OBSERVATIONS FOR THIS PAGE (2)= PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND UTFn LESS THAN OR EQUAL TO .60 MPH)

I TABLE SD E

I I

I VERMONT YANKEE JAN88 DEC88 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND CATA STABILITY CLASS D CLASS FREQUENCY (PERCENT) = 47.10 l

WIND DIRECTION FROM l

l SPEED (MPH) N NNE NE ENE E ESE SE SSE S LSW SW WSW W WNW NW NNW VRBL TOTAL l

' " 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 35 14 19 17 17 2$ 26 29 21 14 11 7 7 10 15 25 0 292 (1) 1.12 45 .61 .54 .54 .80 .83 .93 .67 45 .35 .22 .22 .32 48 .80 .00 9.36 (2) .53 .21 .29 .26 .26 .38 .39 44 .32 .21 .17 .11 .11 .15 .23 .38 .00 4.41 I '

47 92 46 32 21 18 43 73 89 84 37 20 12 20 18 30 84 0 719 (1) 2.95 1.47 1.03 .67 .58 1.38 2.34 2.85 2.69 1.19 .64 .38 .64 .58 .96 2.69 .00 23.04 I (2) 1.39 .69 .48 .32 .27 .65 1.10 1.34 1.27 .56 .30 .18 .30 .27 .45 1.27 .00 10.85 8 13 143 68 25 24 15 17 23 67 162 70 32 29 48 87 81 130 0 1021 4.58 2.18 .00 32.72 I (1)

(2) 2.16 1.03

.80

.38

.77

.36

.48

.23

.54

.26

.74 2.15 5.19 2.24 1.03

.35 1.01 2.45 1.06 .48

.93 1.54 2.79 2.60 4.17 44 .72 1.31 1.22 1.96 .00 15.41 I 13 18 (1)

(2) 113 3.62 1.38 1.71 43

.65

.13

.06 4

16

.08 5

.10

.05 3

.16

.08 5 8

.26

.12 13 79

.42 2.53 1.38

.20 1 19 .65 43

.26

.12 8

.08 5 51 154 107 119

.16 1.63 4.94 3.43 3.81

.77 2.32 1.62 1.80

.00

.00 0 760 24.36 11.47 19 24 26 6 2 1 0 0 1 1 26 12 8 0 11 57 40 62 0 253 (1) .83 .19 .06 .03 .00 .00 .03 .03 .83 .38 .26 .00 .35 1.83 1.28 1.99 .00 8.11 (2) .39 09 .03 .02 .00 .00 .02 .02 .39 .18 .12 .00 .17 .86 .60 .94 .00 3.82 CT 24 6 2 1 0 0 0 0 0 3 2 0 0 3 21 15 22 0 75 (1) .19 06 .03 .00 .00 .00 .00 .00 .10 .06 .00 .00 .10 .67 45 .71 .00 2.40 (2) .09 .03 .02 .00 .00 .00 .00 .00 .05 .03 .00 .06 .05 .32 .23 .33 .00 1.13 ALL SPEEDS 415 179 83 68 53 90 131 199 3 75 178 79 53 140 347 288 442 0 3120 (1) 13.30 5.74 2.66 2.18 1.70 2.88 4.20 6.38 12.02 5.71 2.53 1.70 4.49 11.12 9.23 14.17 .00 100.00 B (2) 6.27 2,70 1.25 1.03 .80 1.36 1.98 3.00 5.66 2.69 1.19 .80 2.11 5.24 4.35 6.67 .00 47.10 (1)= PERCENT OF ALL G000 OBSERVATIONS FOR TH15 PACE (2)sPERCENT OF ALL C000 OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .60 MPH)

I I

TABLE SE I

E I

l VERMONT VANKEE JAN88-DECM METEOROLOGICAL DATA JolNT FREQUENCY DISTRIBUTION i

W 297.0 FT WIND DATA $fABILITY CLASS E CLASS FREQUENCY (PERCENT) = 33.97 WIND DIRECTION FROM SPEED (MPH) N NNE 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 59 55 38 31 30 57 66 59 33 25 11 12 18 16 24 43 0 577 (1) 2.62 2.44 1.69 1.38 1.33 2.53 2.93 2.62 1.47 1.11 .49 .53 .80 .71 1.07 1,91 .00 25.64 I (2) .89 .83 57 .47 .45 .86 1.00 22 119 128

.89 .50 84

.38 39

.17 19

.18 .27 21

.24 19

.36 .65 33 133

.00 0

8.71 794 47 92 42 9 6 14 14 I (1)

(2) 4.09 1.87 1.39 .63 40 14

.27

.09

.62

.21

.98 5.29 5.69 3.73 1.73

.33 1.80 1.93 1.27 .59

.84

.29

.62

.21

.93

.32

.84 1.47 5.91

.29 .50 2.01

.60

.00 35.29 11.99 I 8 12 77 19 4 0 0 1 21 58 64 37 14 9 34 75 69 91 0 5 73 (1) 3.42 .84 .18 .00 .00 .04 .93 2.58 2.84 1.64 .62 .40 1.51 3.33 3.07 4.04 .00 25.47 (2) 1.16 .29 .06 .00 .00 .02 .32 .88 .97 .56 .21 .14 .51 1.13 1.04 1.37 .00 8.65 13-18 25 5 0 0 0 0 4 12 26 23 5 3 13 32 46 55 0 249 (1) 1.11 .22 .00 .00 .00 .00 .18 .53 1.16 1.02 .22 .13 .58 1.42 2.04 2.44 .00 11.07 (2) .38 .08 .00 .00 .00 .00 .06 .18 .39 .35 .08 .05 .20 .48 .69 .83 .00 3.76 19 24 7 2 0 0 0 0 0 0 9 9 1 0 0 4 7 13 0 52 (1) .31 .09 .00 0 .00 .00 .00 .00 .40 40 .04 .00 .00 .18 .31 .58 .00 2.31 (2) .11 .03 .00 .00 .00 .00 .00 .00 .14 .14 .02 .00 .00 .06 .11 .20 .00 .79 GT 24 2 0 0 0 0 0 0 0 0 1 0 0 0 0 0 2 0 5 (1) .09 .00 .00 .00 .00 .00 .00 .00 .00 .04 .00 .00 .00 .00 .00 .09 .00 .22 (2) .03 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .00 .00 .00 .03 .00 .08 ALL SPEEDS 262 123 51 37 44 80 210 257 216 134 50 38 86 146 179 ";37 0 2250 I (1) 11.64 5.47 2.27 1.64 1.96 3.56 9.33 11.42 9.60 5.96 2.22 1.69 3.82 6.49 7.96 14.98 00 100.00 (2) 3.96 1.86 .77 .56 .66 1.21 3.17 3.88 3.26 2.02 .75 .57 1.30 2.20 2.70 5.09 .00 33.97 I ((1)=

2)sPERCENT PERCENT OF ALLFOR OF ALL C000 OBSERVAfl0NS C00D OBSERVATIONS THis PERIOD C= CALM (WIND FOR THis SPEED LESS PAGE THAN OR EQUAL To .60 MPH) t TABLE 5F I

I VERMONT YANKEE JAN88-DEC88 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLAST F CLASS FREQUENCY (PERCENT) = 12.39 W WIND DIRECTION FROM SPEED (MPH) N NNE NE ENE E ESE SE $$E S $$V SW VSW W WNW 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

'I (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 I C-3 34 31 30 16 20 32 20 23 31 15 4 7 11 14 12 32 0 332 (1) 4.14 3.78 3.65 1.95 2.44 3.90 2.44 2.80 3.78 1.83 .49 .85 1.34 1.71 1.46 3.90 .00 40.44 (2) .51 .47 .45 .24 .30 48 .30 .35 .47 .23 .06 .11 .17 .21 .18 48 .00 5.01 47 42 16 0 5 2 16 47 58 42 12 13 12 16 7 18 57 0 363 (1) 5.12 1.95 .00 .61 .24 1.95 5.72 7.06 5.12 1.46 1.58 1.46 1.95 .85 2.19 6.94 .00 44.21 (2) .63 .24 .00 .08 .03 .24 .71 .88 .63 .18 .20 .18 .24 .11 .27 .86 .00 5.48 8 12 10 2 0 0 0 3 10 13 8 8 4 2 7 7 4 36 0 114 (1) 1.22 .24 .00 .00 .00 .37 1.22 1.50 .97 .97 .49 .24 .85 .85 ' .49 4.38 .00 13.89 (2) .15 .03 .00 .00 .00 .05 .15 .20 .12 .12 .06 .03 .11 .11 .06 .54 .00 1.72 13-18 1 0 0 0 0 0 0 1 0 0 2 0 2 1 1 3 0 11 (1) .12 .00 .00 .00 .00 .00 .00 .12 .00 .00 .24 .00 .24 .12 .12 .I7 .00 1.34 (2) .02 .00 .00 .00 .00 .00 .00 .02 .00 .00 .03 .00 .03 .02 .02 .05 .00 .17 19 24 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 I (1)

(2)

.00

.03

.00

.12

.02

.00

.12

.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 I (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 I ALL SPEEDS (2) 1.31 87 49 74 30

.45 21

.32 22

.33 51 77 95 81 35 23 (1) 10.60 5.97 3.65 2.56 2.68 6.21 9.38 11.57 9.87 4.26 2.80 2.68 4.38 3.53 4.26 15.59

.77 1.16 1.43 1.22 .53 .35 .33 .54 22 36 29 44 35 128

.53 1a93 0 821

.00 100.00

.00 12.39 (1}sPE2 CENT OF ALL C000 OBSERVATIONS FOR THIS PAGE (2)= PERCENT OF ALL C000 OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .60 MPH) i I

I TABLE SG I

I VERMONT YANKEE JAN88 DEC88 METEOROLOGICAL DATA JolNT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS C CLASS FREQUENCY (PERCENT) s 1.89 WIND DIRECTION FROM SPEED (MPH) N NNE NE ENE E ESE SE SSE S SSW SW WSW W WWW NW NNW VRBL TOTAL CALM 0 0 0 0 0 0 0 C 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 C3 2 2 1 4 1 1 3 5 2 4 2 0 5 2 2 5 0 41 1.60 1.60 .80 3.20 .00 32.80 I

(1) .80 .80 2.40 4.00 1.60 3.20 1.60 00 4.00 1.60 1.60 4.00 (2) .03 .03 .02 .06 .02 .0i AS .08 .03 .06 .03 .00 .08 .03 .03 .08 .00 .62 4-7 3 2 0 0 1 3 6 9 6 3 3 4 4 6 2 4 0 56 (1) 2.40 1.60 .00 .00 . 80 2.40 4.80 1.20 4.80 2.40 2.40 3.20 3.20 4.80 1.60 3.20 .00 44.80 I (2) .05 .03 .00 .00 .02 .05 .09 .14 .09 .05 .05 .06 .06 .09 .03 .06 .00 .85 ..

8 12 0 0 0 0 1 1 4 3 2 4 0 2 2 3 1 1 0 24 I (1) .00

.00

.00 .00 .00

.00

.80

.02

.80 3.20 2.40 1.60 3.20

.02 .06 .05 .03 .06

.00 1.60 1.60 2.40

.00 .03 .03 .05

.80

.02

.80

.02

.00

.00 19.20

.36 (2) .00 .00 13-18 0 0 0 0 0 0 0 0 1 1 0 0 0 0 2 0 0 4 (1) .00 .00 .00 .00 .00 .00 .00 .00 .80 .80 .00 .00 .00 .00 1.60 .00 .00 3.20 (2) .00 .00 .00 .00 .00 .00 .00 .00 .02 .02 .00 .00 .00 .00 .03 .00 .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 .00 .00 .00 .00 .00 B 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 5 4 1 4 3 5 13 17 11 12 5 6 11 11 7 10 0 125 6 I (1)

(2) 4.00 3.20

.08 .06

.80 3.20 2.40 4.00 10.40 13.60 8.80 9.60 4.00 4.80 8.80 8.80 5.60 8.00

.02 .06 .05 .08 .20 .26 .17 .18 .08 .0v .17 .17 ,11 .15

.00 100.00

.00 1.89 (1): PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)= PERCENT OF ALL GOOD OBSERVATIONS FOR THl$ PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL TO .60 MPH)

I . _

I .-

i

= TABLE SH I

I I

VERMONT YANKEE JAN88 DEC88 METEOROLOGICAL DATA J0lNT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS ALL CLASS FREQUENCY (PERCENT) = 100.00 WIND DIRECTION FROM SPEED (MPH) N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW VRBL TOTAL CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 I (1)

(2)

.00

.00 69 117 120 118 At 53 106 I

C3 132 103 90 69 87 59 29 26 42 0 1261 (1) '1.99 1.55 1.36 1.04 1.04 1.77 1.81 1.78 1.31 .89 .44 .39 .62 .63 .80 1.60 .00 19.04 (2) 1.99 1.55 1.36 1.04 1.04 1.77 1.81 1.78 1.31 .89 .44 .39 .62 .63 .80 1.60 .00 19.04 I 47 (1)

(2) 234 108 3.53 1.63 3.53 1.63

.65

.65 43

.48 32 48 37 91 253 292 219

.56 1.37 3.82 4.41 3.31 1.39

.56 1.37 3.82 4.41 3.31 1.39 92 56

.85

.85 43

.65

.65 62

.94

.94 51 86 281

.77 1.30 4.24

.00

.00 0 1980 29.89 29.89 8-12 243 95 31 24 16 23 61 148 260 128 54 44 102 178 160 270 0 1837 (1) 3.67 1.43 .47 .36 .24 .35 .92 2.23 3.93 1.93 .82 .66 1.54 2.69 2.42 4.08 .00 27.73 (2' 3.67 1.43 .47 .36 .24 .35 .92 2.23 3.93 1.93 .82 .66 1.54 2.69 2.42 4.08 .00 27.73 I 13-18 (1) 151 2.28 54

.82 .06 4

.08 5

.05 3

.08 5 13

.20 27 120

.41 1,81 1.10 73 18

.27 8 72 198 159 195

.12 1.09 2.99 2.40 2.94 .00 0 1105 16.68 (2) 2.28 .82 .06 .08 .05 .08 .20 .41 1.81 1.10 .27 .12 1.09 2.99 2.40 2.94 00 16.68 19 24 41 8 2 1 0 0 1 1 38 22 9 1 13 64 56 95 0 352

.85 1.43 5.31 I (1) .62 .12 .03 .02 .00 .00 .02 .02 .57 .33 .14 .02 .20 .97 .00 (2) .62 .12 .03 .02 .00 .00 .02 .02 .57 .33 .14 .02 .20 .97 .85 1.43 00 5.31 GT 24 11 2 1 0 0 0 0 0 3 3 0 0 3 22 16 28 0 89 I (1)

(2)

.17

.03

.02

.00

.05

.00

.05

.05 33

.33

.24

.24 42 4

.00

.00 1.34 1.34 I ALL SPEEDS 812 370 171 131 125 236 448 586 727 377 166 122 293 555 530 975 (1) 12.26 5.59 2.58 1.98 1.89 3.56 6.76 8.85 10.98 5.69 2.51 1.84 4.42 8.38 8.00 14.72 (2) 12.26 5.59 2.58 1.98 1.89 3.56 6.76 8.85 10.98 5.69 2.51 1.84 4.42 8.38 8.00 14.72 0 6624

.00 100.00

.00 100.00 ,

(1): PERCENT OF ALL C000 OBSERVATIONS FOR THIS PAGE (2)= PERCENT OF ALL GOOD OBSERVATIONS COR THl$ PERIOD C. CALM (WIND SPEED LESS THAN OR E00AL TO .60 MPH)

I APPENDIX A EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT Supplemental Information Third and Fourth Quarters, 1988 lI l

Facility: Vermont Yankee Nuclear Power Station lI Licensee: Vganont Yankee Nuclear Power Corporation lI 1A. Technical Spe::ification Limits - Dose and Dose Rate Technical Specification and Category Limit

a. Ugh 11_ Gangs 500 mrem /yr I 3.8.E.1 3.8.E.1 Total body dose rate Skin dose rate 3000 mrem /yr 3.8.F.1 Gamma air dose 5 mrad in a quarter I 3.8.F.1 3.8.F.1 Gamma air dose Beta air dose 10 mrad in a year 10 mrad in a quarter 3.8.F.1 Beta air dose 20 mrad in a year

b. Iodine-131. Iodine-133. Tritium and Radionuclides in Particulate Form With Half-Lives Greater Than 8 Daya 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. Li2uids I 3.8.B.1 Total body dose 1.5 mrem in a quarter 3.8.B.1 I 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 A-1 4436R I - - -_

I 2A. Technical Specification Limits - Concentration I Iechnical Specification and Category Limit

a. Noble Gases No M2C limits

b. Iodine-131. Iodine-133. Tritium and Radionuclides in Particulate Form M Half-Lives Greater Than 8 Days: No MFC limits

c. Liquida 8'^' ' '" ** " ' "" s E

B excluding noble gases (10CFR20, Appendix B, Table II, Column 2): 11.0 3.8.A.1 Total noble gas concentration: 12E-04 uCi/cc a

3. Average Energy Provided below are the average energy (E) of the radionuclides mixture in releases of fission and activation gases, if applicable.

a. Average ganna energy: 3rd Quarter 8.17E-01 MeV/ dis 4th Quarter 9.52E-01 MeV/ dis

b. Average beta energy: Not Applicable

4. Measurements and Approximations of Total Radioactivity Provided below are the methods used to measure or approximate the total I radioactivity in effluents and the methods used to determine radionuclides composition.

4436R I

I

I a. Fission and Activation Gases t

Daily samples are drawn at the discharge of the air ejector.

Isotopic breakdown of the releases are determined from these I samples. A logarithmic chart of the stack gas monitor is read daily to determine the gross release rate. At the very low release rates nornially encountered during operation with the augmented off-gas system the error of release rates may be approximately 1100 percent.

b. Iodines Continuous isokinetic samples are drawn from the plant stack I through a particulate f11ter and charcoal cartridge. The f11ters and cartridge are removed weekly (if releases are less than 4 percent of the Tech Spec limit), or daily (if they are greater than 4 percent of the limit), and are analyzed for radioiodine 131, 132, 133, 134, and 135. The iodines found on the filter are added to those on the charcoal cartridge. The error involved in these steps may be approximately 150 percent.

c. Particulate 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. Liquid Effluents I Radioactive liquid effluents released from the facility are continuously monitored. Measurements are also made on a I 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/mi) of gross I A-3 4436R I

I radioactivity, volume (liters), and approximate total quantity of l- water (liters) used to dilute the liquid effluent prior to release to the Connecticut River.

Each batch of radioactive liquid effluent released is ana?fzed for gross gamma and gamma isotopic radioactivity. A monthly proportional composite sample, comprising an aliquot of each batch released during a month, is also analyzed for tritium, SR-89, SR-90, gross beta and gross alpha radioactivity, in addition to gamma spectroscopy.

I There were no liquid releases during the reporting period.

5. Batch Releases

a. Liquid There were no routine liquid batch releases during the reporting period.

b. Gaseous There were no routine gaseous batch releases during the reporting period.

6. Abnormal Releases I a. Liquid There were no nonroutine liquid releases during the reporting period.

b. Gaseous I There were no nonroutine gaseous releases during the reporting period.

I 4436R A-4 I

l l .

APPENDIX B l

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

I Reapnnan: The limits of Technical Specification 3.8.D.1 were not exceeded during this reporting period.

I I

I I 4436R B-1 I

I

l I APPENDIX C 1'

RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION l

Requirement: Radioactive liquid effluent monitoring instrumentation channels 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 explanation in the next Semiannual Effluent Release Report of the reason (s) for delay in correcting the inoperability are ;

required per Technical Specification 6.7,0.1. l Response: Since the requirements of Technical Specification Table 3.9.1 governing the operability of radioactive liquid effluent I monitoring instrumentation were met for this reporting period, no response is required.

I I

I I C-1 4436R l

I

APPENDIX D RADI0 ACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION

-Requirement: . Radioactive gaseous effluent monitoring instrumentation channels 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 5 of Table 3.9.2, an explanation in the next Semiannual Effluent Release Report of the reason (s) for the delay in correcting the inoperability is required per Technical Specification 6.7 C.1.

Response: Since the requirements of Technical Specification Table 3.9.2 governing the operability of radioactive gaseous effluent monitoring instrumentation were met for this reporting period, m response is required.

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l I APPENDIX E i

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RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ,

I Requirement: The radiological environmental monitoring program is conducted in accordance with Technical Specification 3.9.C. With milk l

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samples no longer available from one or more of the sample locations required by Technical Specification Table 3.9.3, Technical Specification 6.7.C.1 requires the following to be included in the next Semiannual Effluent Release Report:

(1) identify the cause(s) of the sample (s) no longer being available, (2) identify the new location (s) for obtaining available replacement samples and (3) include revised ODCM I figure (s) and table (s) reflecting the new location (s).

Respsna.c: All required milk samples were available during this reporting period.

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I APPENDIX F 1

l I LAND USE CENSUS i

Requirement: A land use census is conducted in accordance with Technical l 1

I Specification 3.9.D. With a land use census identifying a location (s) which yields at least a 20 percent greater dose or dose commitment than the values currently being calculated in 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. ,

Respana.e: No locations 'ere w identified by the 1988 land use rensus that would yield at least a 20 percent greater dose or dose l

commitment than the values currently being calculated pursuant I to Technical Specification 4.8.G.1. i l

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I APPENDIX G l

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

Reappnag: There was no licensee initiated change (s) to the Process Control Program during this reporting period.

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I APPENDIX H OFF-SITE DOSE CALCULATION MANUAL I Requirement: Technical Specification 6.13.A.1 requires that licensee initiated changes to the Off-Site Dose Calculation Manual (ODCM) be submitted to the Commission in the Semiannual Radioactive Effluent Release Report for the period in which the change (s) was made effective.

Reapmln : There were no licensee initiated changes to the Off-Site Dose Calculation Manual during this reporting period.

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APPENDIX I' RADIOACTIVE LIQUID, GASEOUS, AND SOLID WASTE TREATMENT SYSTEMS Enguirement: Technical Specification 6.14.A requires that liesnsee initiated major changes to the radioactive waste systems (liquid, gaseous, and solid) be reported 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.

Responge: There were no licensee initiated major changes to the radioactive waste' systems (liquid, gaseous, and solid) during this reporting period.

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VERMONT YANKEE

BVY 89-37 NUCLEAR POWER CORPOi1ATION RD 5, Box 169. Ferry Road, Brattleboro, VT 05301 ENGINEERING OFFICE April 13, 1989 g [o$8"[7So ,o

. (508)779-6711 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555

Reference:

(a) Licensa N . DPR-28 (Docket No. 50-271)

(b) Lettet. W:NPC to USNRC, BVY 89-023, dated March 1, 1989

Subject:

Vermont Yankee Supplemental Report, Effluent and Waste Disposal Semiannual Report for Third and Fourth Quarters, 1988 Including Annual Radiological Impact on Man for 1988.

Dear Sir:

By letter cated March 1, 1989 [ Reference (b)], Vermont Yankee submitted the Effluent and Waste Disposal Semiannual Report for Third and Fourth Quarters 1988. At that time, Vermont Yankee committed to submit the 1988 radiological impact on man information in a supplemental report pursuant to Technical Specification 6.7.C.1.b. Accordingly, enclosed please find one copy of the supplemental Report.

The enclosed supplemental Report contains all the effluent and waste disposal totals for the third and fourth quarters of 1988 previously submitted in Reference (b). The supplemental Report also includes the 1988 radiological impact on man information and may therefore be fully substituted for the Report submitted with Reference (b).

We trust that the enclosed information is satisfactory; however, should you have any questions, please contact me Very truly yours, VERMONT YANKEE RJCLEAR POWER CORPORATION d

R. W. Capstick Licensing Engineer RWC/sv Enclosure

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cc: USNRC Region I USNRC Resident Inspector, VYNPS h

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ML20244D578

Contents

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ML20244D578

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Dear Sir:

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