ML20196B287
| ML20196B287 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 12/31/1998 |
| From: | Sen G VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| BVY-99-81, NUDOCS 9906230141 | |
| Download: ML20196B287 (82) | |
Text
"
VERMONT YANKEIl~ I (y NUCLEAR POWER CORPORATION 185 Old Ferry Road, Brattleboro, VT 05301-7002 i (802) 257-5271 ]
June 16,1999 ,
{
United States Nuclear Regulatory Commission j ATTN: Document Control Desk j Washington, DC 20555
Subject:
Vermont Yankee Nuclear Power Station License No. DPR-28 (Docket No. 50-271)
VY Supplemental Annual Radioloeical Effluent Release Report for 1998 I The attached report is provided pursuant to Vermont Yankee Technical Specification 6.7.C.1 and 10CFR50.36a(a)(2).
We trust that the infonnation provided is acceptable; however, should you have any questions, please contact Mr. David P. Tkatch at 802-258-5500.
Sincerely, VERMONT YANKEE NUCLEAR POWER CORPORATION A%
/Gauedn Sen Licensing Manager /
Attachment cc: USNRC Region 1 Administrator USNRC Resident inspector - VYNPS USNRC Project Manager-- VYNPS VT Department of Public Service
[
Massachusetts Metropolitan District Commission Massachusetts Department of Public Health l Vermont Division of Occupational and Radiological Health A 4./ w' 9906230141 981231 PDR ADOCK 05000271 R PDR I
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A VEllMONT YANKEE NUCLEAR POWER CORPORATION VERMONT YANKEE NUCLEAlt POWER STATION VERNON, VERMONT
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SUPPLEMENTAL ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT I FOR 1998 INCLUDING ANNUALRADIOLOGICAL l ,
IMPACT ON MAN
- Vermont Yankee Nuclear Power Station i
[
ERRATA In past Vermont Yankee Effluent and Waste Disposal Annual Report (s), the following corrections should be made:
( The Annual Radioactive Effluent release Report for 1998 contains a typographical error in Table 3 Section A.I. The unit column should contain m' over Ci. Also, under "[ waste] Shipped from Processor (s) for Burial or Disposal", Row c. contains the number 3.37E-5. This is the number of Curies
[ of dry compressible waste, contaminated equipment, etc. shipped in the 1" and 2"d quarters, and should have been reported in Row b. The necessary corrections have been made in Table 3 of this report.
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1 TABLE OF CONTENTS Pace ERRATA.................................................................................................................................................ii
1.0 INTRODUCTION
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2.0 M ETEORO LOG ICAL D ATA . . . . . . . .. . . . . . ... . . . . .. .. . . . ... . . . . . . . . . . . . . . .. . . .. .. . ... . . . . . . . . .... . . .. ... . .. . . . .. . . . . . . . . . . . . . . . . . . . 2 f' 3.0 D O S E A S S E S S M ENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Do se s From Liq u i d E fflue n ts . . .. . .. . . . . . . . . . . ... . . . . . . . . . . . .. . . . . . .. . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 3
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3.2 Do s e s Fro m Nobl e G ase s . . . . . . . .. . . . . . . . .. . . . . . . . . . .. .. . . . . . . .. . .. . . . . . . . . . . . . . . . . .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3.3 Doses From Iodine-131, Iodine-133. Tritinm, and Radionuclides in Particulate
{ Form With Half-Lives Greater Than 8 Days ............................. ................... ... ................ 3 3.4 Whole-Body Doses in Unrestricted Areas From Direct Radiation .......... .............. ......... 4 3.5 . Doses From On-Site Disposal of Septic Waste and Cooling Tower Silt.. ...... .. . .... .5 3.6 On-S ite Recreation al Activities .. ...... ... ... .... ...... . .. ... . . .. . ... ...... ... . ........... ... . . ... ... .... .. . .. . . . . . 5 REFERENCES................................................................................................................. . .. . 6 APPENDIX A- S UPPLEMENTAL INFORM ATION .... . ....... ........... ... ..................... . .. ...... A- I b APPENDIX B - LIQ U ID H O LD U P TAN KS . . . . . . . .. . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . .. . . . . .
APPENDIX C - RADIOACTIVE LIQUID EFFLUENT MONITORING IN STR UM ENTATI ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .. . . . . . . . . . C- 1 APPENDIX D - RADIOACTIVE GASEOUS EFFLUENT MONITORING
[ IN STR UM ENTATION . . .. . . . . . .. . . . . . . . . . . .- . . . . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . . . . . D- 1
. APPENDIX E - RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ..... .. .. E-1 APPENDIX F - L AN D U S E C EN S U S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F- 1 APPENDIX G - PROCES S CONTROL PROG RAM ......... .. . .... ...... ............... . ........ .. ..... . ... ...... .. G- 1 APPENDIX H - OFF-SITE DOS E CALCULATION M ANUAL................................................. H- 1 APPENDIX I- RADIOACTIVE LIQUID, GASEOUS AND SOLID WASTE TREATM ENT S YSTEM S . .. . . . . . . .. . . . . . . . . . . . . ... . . . . . . . . . .. . . . ..... . . .. .. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . I- 1
- APPENDIX J -
. ON-SITE DISPOS AL OF S EPTIC WASTE ....................................................... J- 1 i
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I 111 L
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LIST OF TABLES Number Title Page IA. First and Second Quarters,1998 Gaseous Effluents - Summation of All Releases 7
'1A Third and Fourth Quarters,1998 Gaseous Effluents - Summation of All Releases 8 IB First and Second Quarters,1998
{ Gaseous Effluents - Elevated Releases .9 IB Third and Fourth Quarters,1998 Gaseous Effluents - Elevated Releases 10 l
IC First and Second Quarters,1998 Gaseous Effluents - Ground Level Releases
( 11 IC Third and Fourth Quarters,1998 Gaseous Effluents - Ground Level Releases 12
.lD Gaseous Effluents - Nonroutine Releases 13 2A Liquid Effluents - Summation of All Releases 14 2B Liquid Effluents - Nonroutine Releases 15 3 First and Second Quarters,1998 Solid Waste and Irradiated Fuel Shipments 16 3 Third and Fourth Quarters,1998 Solid Waste and Irradiated Fuel Shipments 18 j 4A' Maximum Off Site Doses / Dose Commitments to Members of the Public from Liquid and Gaseous Effluents for 1998 (10CFR50, Appendix I) 20 4B Maximum Annual Dose Commitments from Direct External Radiation, Plus Liquid and
- Gaseous Effluents for 1998W (40CFR190) 21 4C Receptor Locations for Vermont Yankee 22
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4D Usage Factors for Various Gaseous Pathways at Vermont Yankee 23 4E Environmental Parameters for Gaseous Effluents at Vermont Yankee 24 iv l
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5A to SH Annual Summary of Upper Level Joint Frequency Distribution 26-33 6A to 6H Annual Summary of Lower Level Joint Frequency Distribution 34-41 f
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l SUPPLEMENTAL j EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT FOR two l INCLUDING ANNUAL RADIOLOGICAL IMPACT ON MAN
1.0 INTRODUCTION
j Tables 1 through 3 list the recorded radioactive liquid and gaseous efnuents and solid waste for the year, with data summarized on a quarterly basis for both liquids and gases. Table 4A summarizes the estimated radiological dose commitments from all radioactive liquid and gaseous efnuents released during the year 1998 in response to the ALARA objectives of 10CFR50, Appendix I. Also included on Table 4A is the estimate of direct dose from fixed station sources along the limiting west site boundary line. Tables SA through 6H report the cumulative joint frequency distributions of wind speed, wind direction, and atmospheric stability for the 12-month period, January to December 1998. Radioactive efnuents reported in the Annual Ef0uent Report covering the year were used to determine the resulting doses for 1998.
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 Off-Site Dose Calculation Manual" (ODCM). These dose estimates were made f using a " Method II" analysis as described in the ODCM. A " Method II" analysis incorporates the methodology of Regulatory Guide 1.109 (Reference 3) and actual measured meteorological data recorded during the reporting period.
As required by Technical Specification 6.7.C.I.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 site boundary during the year. For this reporting period, the only recreational activity permitted was employee access to a boat launching ramp adjacent to the intake structure. The assessment of recreational activities is described in Section 3.6.
Assessment of radiation doses (including direct radiation) to the likely most exposed real member (s) of the public for the calendar year for the purposes of demonstrating conformance with 40CFR190, " Environmental Radiation Protection Standards for Nuclear Power Operations," are also required to be included in this report if the conditions indicated in Technical Specification 3.8.M.1,
" Total Dose," have been exceeded during the year. 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. However, Table 4B does provide the combination of doses and dose
[ commitments from plant effluents and direct radiation sources for the limiting member of the public off-site as a demonstration of compliance with the dose standards of 40CFR190.
All calculated dose estimates for this reporting period are well below the dose criteria of 10CFR Part 50, Appendix I, and 40CFR190.
Appendices B through H indicate the status of reportable items per the requirements of Technical Specifications 6.7.C.1 and 6.14.A.
I 1
2.0 METEOROLOGICAL 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 reactor building, and about 1,400 feet from the plant stack. The 300-foot tower is approximately the same height as the primary plant stack (94 meter.,) and is designed to meet the requirements of Regulatory Guide 1.23 for 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. All dispersion factors have been calculated employing appropriate source configuration considerations, as described in Regulatory Guide 1.111 (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 for all stack i (elevated) releases. Changes in terrain elevations in the site environment were also factored into the meteorological models as appropriate.
Table 4C lists the distances from the plant stack to the nearest site boundary, resident, and milk animal in each of the 16 principle compass directions as determined during the 1998 land use census.
. These locations were used in the calculation of atmospheric dispersica factors.
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t 3.0 DOSE ASSESSMENT
[ 3.1 Doses From Liauid Ef0uents Technical Specification 3.8.B.1 limits total body (1.5 mrem per quarter, and 3 mrem per year)
[ and organ doses (5 mrem per quarter, and 10 mrem per year) from liquid effluents to a member of the public to those specified in 10CFR Part 50, Appendix I. By implementing the requirements of 10CFR
[ Part 50, Appendix I, Technical Specification 3.8.B.1 assures that the release of radioactive material in t liquid effluents will be kept "as low as is reasonably achievable."
For periods in which liquid waste discharges actually occur, the exposure pathways that could
[ exist are fish, direct exposure from river shoreline sedimentation, milk and meat via animal ingestion of the Connecticut River water, and meat, milk and vegetable pathways via crop irrigation with water withdrawn from the Connecticut River. The drinking water and aquatic invertebrate pathways do not
{ exist downriver of the Vermont Yankee plant.
There were no recorded liquid radwaste discharges during the report period, and therefore, no
[
dose impact.
3.2 Doses From Noble Gases 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 10CFR Part 50, Appendix I. By implementing the requirements of 10CFR 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 typically calculated at the site boundary, nearest resident in each of the sixteen principal compass directions, 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.
3.3 Doses From Iodine-131. Iodine-133. Tritium, and Radionuclides in Particulate Form With
[ Half-Lives Greater Than 8 Days 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 particulate form with half-lives greater than 8 days (hereafter called iodines and p .iculates) in gaseous effluents released from the site to areas at and beyond the site
[ boundary to those specified in 10CFR Part 50, Appendix I(7.5 mrem per quarter, and 15 mrem per year). By implementing the requirements of 10CFR Part 50, Appendix I, Technical Specification 3.8.G 1 assures that the releases ofiodines and particulates in gaseous effluents will be kept "as low as is
( reasonably achievable."
3 i ~
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Exposure pathways that could exist as a result of the release ofiodines and particulates 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 principal 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.1 (see Table 4C).
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 cow location since this data category is not part of the annualland use census. Doses were also calculated at the point of maximum ground level air concentration of radioactive materials in gaseous effluents and included the assumption j 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 limited grazing allowed during the growing season. It has also been assumed that only 50 percent of the iodine deposited from gaseous effluent is in elemental form (12) and is available for uptake (see p. 26, Reference 3), During the first and fourth quarters, the milk animals are assumed to receive only stored feed. Usage factors for gaseous effluents are listed by age group and pathway in Table 4D. Table 4E provides other dose model parameter assumptions used in the dose assessments.
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 annual organ doses to any age group due to iodines and particulates at any of the off-site receptor locations are reported in Table 4A. These estimated organ doses are well below the 10CFR Part 50, Appendix I dose criteria of Technical Specification 3.8.G.I.
3.4 Whole-Body Doses in Unrestricted Areas From Direct Radiation The major source of dose, consisting of direct radiation and skyshine, from the station is due to N-16 decay in the turbine building. Because of the orientation of the turbine building on the site, and the i
- shielding effects of the adjacent reactor building, only the seven westerly sectors (SSW to NNW) see any significant direct radiation.
4 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 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 4) for radiation fields resulting from N-16 photons.
4 1
/
I The other sources of dose, including direct radiation and skyshine, to the site boundary are from low level radioactive waste stored in the north warehouse, the low level waste storage pad facility, and
[ old turbine rotors and casings in the turbine storage facility. The annual dose is based on dose rate measurements in these three storage facilities and determined at the same most restrictive site boundary dose location as that for N-16 shine from the Turbine Building.
The estimated direct radiation dose from all major sources combined for the most limiting site boundary location is listed on Table 4A . These site boundar;, .foses assume a 100 percent occupancy
[ factor, and take no credit for the shielding effect of any residential structure.
Table 4B list the combination of direct radiation and effluent release doses at the limiting nearest residence for the purpose of demonstrating compliance with the dose standards contained in 40CFR190.
For direct radiation, no credit for actual occupancy time is taken (i.e., occupancy is equal to 100%).
3.5 Doses From On-Site Disposal of Septic Waste and Cooline Tower Silt
[
Off-Site Dose Calculational Manual, Appendices B and F, require that all applications of septage and the cooling tower silt within the approved designated disposal areas be limited to ensure the dose to
[ a maximally-exposed individual be maintained at less than 1 mrem / year to the whole body and any organ, and the dose to the inadvertent intruder be maintained at less than 5 mrem / year. The projected dose from on-site disposals of septic waste and the cooling tower silt is given in Appendix J of this
[ report.
3.6 On-Site Recreational Activities During the summer of 1998, limited access to a boat launching ramp located on-site just north of the intake structure was permitted for employees, their families and guests. An assessment of the second and third quarter Thermoluminescent Dosimeters (TLDs) situated along that section of the river next to the boat ramp were used to estimate the direct radiation exposure rate for this recreational activity. The shoreline recreational usage factor of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> / year (8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> / day times 9 days - taken from security
{ access records as maximum usage for a single individual) was applied to the net TLD exposure rate value to generate a dose estimate for use of the boat ramp area. The resulting individual dose is estimated to be 0.9 mrem. This is considered conservative since most of the ramp area is shielded from
[ plar.t facilities by the river embankment and is below the plant fence line where the TLD measurements were taken. There was no significant gaseous contribution to dose since the close proximity of the ramp area to the 94 meter tall plant stack kept gaseous effluents well over head.
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REFERENCES f 1. Regulatory Guide 1.111, " Methods for Estimating Atmospheric Transport and Dispersion of Gaseous Effluents in Routine Releases from Light-Water-Cooled Reactors", U.S. Nuclear Regulatory Commission, Office of Standards Development, March 1976.
{
- 2. Meteorology and Atomic Energy,1968, Section 5-3.2.2, " Cloud Depletion", pg. 204. U. S.
Atomic Energy Commission, July 1968.
{
- 3. 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, Revision 1, October 1977.
- 4. W. M. Lowder, P. D. Raft, and G. dePlanque Burke, " Determination of N-16 Gamma Radiation Fields at BWR Nuclear Power Stations", Health and Safety Laboratory, Energy Research and Development Administration, Report No. 305, May 1976.
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TABLE 1 A Vermont Yankee Effluent and Waste Disposal Annual Report First and Second Ouarters.1998 Gaseous Effluents - Summation of All Releases Quarter Quarter Est. Total "I' 1 2 Error. 9c A. Fission and Activation Gases I. Total release Ci 2.10E+01 5.32E-01 2 2.30E+0 !
- 2. Average release rate for period pCi/sec 2.67E+00 6.77E-02
- 3. Percent of Tech. Spec. limit (1) 9c 5.26E-03 2.48E-04 B. Iodines
- 1. Total Iodine-131 Ci 1.16E-04 7.49E-06
- 1.80E+01
- 2. Average release rate for period pCi/see 1.48E-05 9.53E-07
- 3. Percent of Tech. Spec. limit (2) 9c 2.39E-02 1.12E-02 C. Particulates
- 1. Particulates with T-1/2 > 8 days Ci 8.41 E-05 5.22E-t3 21.80E+01
- 2. Average release rate for period pCi/sec 1.07E-05 6.64 E-06
- 3. Percent of Tech. Spec. limit (3) 9c (3) (3)
- 4. Gross alpha radioactivity Ci 3.14E-06 1.55E-06 D. Tritium
- 1. Total release Ci 6.86E+00 2.76E+00 *l.80E+0)
- 2. Average release rate for period pCi/sec 8.73E-01 3.51 E-01
- 3. Percent of Tech. Spec. limit (3) 9c (3) (3)
(1) Technical Specification 3.8.F.1.a for gamma air dose.
(2) Technical Specification 3.8.G.1 for dose from I-131, I-133, Tritium, and radionuclides in particulate form.
(3) Per Technical Specification 3.8.G.1, dose contribution from Tritium and particulates are included with I-131 above in Part B.
7 L
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TABLE l A (Continued)
Vermont Yankee p Efnuent and Waste Disposal Annual Report Third and Fourth Ouarters.1998 Gaseous Efnuents - Summation of All Releases I U".' Quarter 3
(uarter 4
Est. Total Error. %
A. Fission and Activation Gases
- 1. Total release Ci 0.00E+00 2.44E-01 2 2.30E+01 i 2. Average release rate for period pCi/sec 0.00E+00 3.10E-02
- 3. Percent of Tech. Spec. limit (1) % 0.00E+00 1.77E-06 B. Iodines
- 1. Total lodine-131 Ci 5.94 E-05 9.OsE-05 it.80E+01
- 2. Average release rate for period pCi/sec 7.56E-06 1.15 E-05
- 3. Percent of Tech. Spec. limit (2) % 6.29E-04 2.47E-04 C. Particulates
- 1. Particulates with T-1/2 > 8 days Ci 1.93E.04 3.7 I E-05 i1.80E+01
- 2. Average release rate for period pCi/sec 2.46E-05 4.72 E-06
- 3. Percent of Tech. Spec. limit (3) ~% (3) (3)
- 4. Gross alpha radioactivity Ci 3.48E-06 2.47E-06 D. Tritium
- 1. Total release Ci 6.79E+00 5.92E+00~ *1.50E+01
- 2. Average release rate for period pCi/sec 8.64E-01 7.53E-01
- 3. Percent of Tech. Spec. limit (3) % (3) (3)
(1) Technical Specification 3.8.F.1.a for gamma air dose.
I (2) Technical Specification 3.8.G.1 for dose from I-131,1-133, Tritium, and radionuclides in particulate form.
(3) Per Technical Specification 3.8.G.1, dose contribution from Tritium and particulates are 1 included with 1-131 above in Part B.
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TABLEIB Vermont Yankee Effluent and Waste Disposal Annual Report First and Second Ouarters.1998 Gaseous Effluents - Elevated Releases Continuous Mode Batch Mode (l)
Quarter Quarter Quarter Nuclides Released Unit 1 2 1 2
- 1. Fission Gases Krypton-85 Ci ND ND Krypton 85m Ci 3.25E-01 1.12E-02 Krypton-87 Ci 5.45E-02 ND Krypton-88 Ci ND ND Xenon-133 Ci 1.54E+01 3.48E-01 Xenon-133m Ci 5.86E-01 ND Xenon-135 Ci 4.42E+00 1.09E-01 Xenon-135m Ci 2.64E 01 6.41E-02 Xenon 138 Ci ND ND Unidentified Ci ND ND f Total for Period Ci 2.10E+01 5.32E-01 0.00E+00 0.00E+00
Iodine-135 Ci ND ND Total for Period Ci 1.16E-04 1.20E-04 0.00E+00 0.00E+00
- 3. Particulates Strontium-89 Ci 9.00E-06 ND Strontium-90 Ci ND ND Cesium-134 Ci ND ND Cesium-137 Ci 4.99E-06 4.65E 06 Barium-Lanthanum-140 Ci ND ND Manganese-54 Ci 4.40E-06 7.30E-06 Chromium-51 Ci 2.64E-05 ND Cobalt-58 Ci ND ND Cobalt-60 Ci 3.93E-05 2.70E-05 Cericam-141 Ci ND ND Zinc-65 Ci ND ND Total for Period Ci 8.41 E-05 S.90E-05 0.00E+00 0.00E+00 (1) There were no batch mode gaseous releases for this reporting period.
ND - Not detected at the plant stack.
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[
TABLEIB (Continued)
Vermont Yankee Effluent and Waste Disposal Annual Report Third and Fourth Ouarters.1998 j Gaseous Effluents - Elevated Releases Continuout Mode Batch Mode (1) j
[ Quarter Quarter Quarter Nuclides Released Unit 3 4 3 4
- 1. Fission Gases
[
t Krypton-85 Ci ND ND Krypton-85m Ci ND ND Krypton-87 Ci ND ND Krypton-88 Ci ND ND Xenon-133 Ci ND ND Xenon-133m Ci ND ND Xenon-135 Ci ND 2.44E-01 Xenon-135m Ci ND ND Xenon-138 Ci ND ND Unidentified Ci ND ND Total for Period Ci 0.00E+00 2.44E-01 0.00E+00 0.00E+00
- 2. Iodines f Iodine-131 Ci 5.94E-05 9.05 E-05 Iodine 133 Ci 2.02E-04 2.27 E-04 Iodine-135 Ci ND ND f 0.00E+00 0.00E+00 Total for Period Ci 2.61 E-04 3.18E-04
- 3. Particulates Strontium-89 Ci ND ND Strontium 90 Ci ND ND Cesium-134 Ci ND ND Cesium-137 Ci ND ND Barium-Lanthanum-140 Ci ND ND Mancanes 54 Ci ND ND Chromium-51 Ci 1.80E-04 3.71 E-05 Cobalt-58 Ci ND ND Cobalt-(o Ci ND ND Cerium-141 Ci ND ND Zinc-65 Ci 1.25E-05 ND Total for Period Ci 1.93E-04 3.7 IE-05 0.00E+00 0.00E+00 (1) There were no batch mode gaseous releases for this reporting period.
ND- Not detected at the plant stack.
10
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TABLEIC Vermont Yankee Efnuent and Waste Disposal Annual Report First and Second Ouarters.1998 12 Gaseous Efnuents - Ground Level Releases >
Continuous Mode Batch Mode (l)
Quarter Quarter Quarter 1
Nuclides Released Unit 1(1) 2 (3) 1(1) 2(1)
- 1. Fission Gases l Krypton-85 Ci ND Krypton-85m Ci ND l Krypton 87 Ci ND l Krypton 88 Ci ND Xenon-133 Ci ND I
Xenon 135 Ci ND i Xenon-135m Ci ND Xenon 138 Ci ND Unidentified Ci ND Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 2, lodines Iodine-131 Ci ND Iodine-133 Ci ND Iodine-135 Ci ND Total for Period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 l l
- 3. Particulates Strontium-89 Ci ND Strontium-90 Ci ND Cesium-134 Ci 9.88E-08 Cesium-137 Ci 4.24E-06 Barium-Lanthanum-140 Ci ND Manganese-54 Ci 6.87E-07 Chromium 51 Ci ND Cobalt-58 Ci ND Cobalt-60 Ci 7.64 E-06 Cerium-141 Ci ND Zinc-65 Ci 5.55E-07 Iron-55 CI ND Total for Period Ci 0.00E+00 1.32E-5 0.00E+00 0.00E+00 (1) There were no ground level gaseous releases of this type for the quarter.
(2) The North Warehouse stack was used as a ground level release point for burning of waste oil.
(3) Burning of waste oil was treated as a continuous release for the second quarter.
ND - Not detected in the waste oil sample, 11 l
l
TABLEIC (Continued)
Vermont Yankee Effluent and Waste Disposal Annual Report i Third and Fourth Ouarters.1998 Gaseous Effluents - Ground Level Releases Continuous Mode Batch Mode (l)
Quarter Quarter Quarter Nuclides Released Unit 3(1) 4(1) 3(1) 4(1) i 1. Fission Gases Krvoton-85 Ci i Krvnton-85m Kn oton-87 Krypton-88 Ci Ci Ci Xenon-133 Ci i Xenon-135 Xenon-135m Ci Ci Xenon-138 Ci I Unidentified Total for Period Ci Ci 0.00E+00 0.00E+00 0 00E+00 0 00E+00
- 2. Iodines I Iodine-131 Iodine-133 Ci Ci lodine-135 Ci I 3.
Tota 1 for Period Particulates Ci 0 00E+00 0 00E+00 0.00E+00 0 00E+00 Strontium-89 Ci Strontium-90 Ci Cesium-134 Ci Cesium-137 Ci Barium Lanthanum-140 Ci l Mancanese 54 Ci Chromium-S I Ci Cobalt 58 Ci l Cobalt-60 Ci Cerium 141 Ci Zine-65 Ci I fron-55 Cl Total for Period Ci 000E+00 0.00E+00 0 00E400 0.00E+00 (1) There were no ground level gaseous releases for this reponing period.
1 ND- Not detected in the waste oil sample.
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f TABLEID Vermont Yankee Effluent and Waste Disposal Annual Report
{
for 1998 Gaseous Effluents - Nonroutine Releases f
There were no nonroutine or accidental gaseous releases during this reporting period.
{.
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TABLE 2A Vermont Yankee Effluent and Waste Disposal Annual Report for 1998 Liauid Effluents - Summation of All Releases
(
There were no liquid releases during this reporting period, f
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14 f
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TABLE 2B Vermont Yankee Effluent and Waste Disposal Annual Report for 1998 Liauid Effluents - Nonroutine Releases I.
There were no nonroutine or accidental liquid releases during this reporting period.-
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l TABLE 3 Vermont Yankee Effluent and Waste Disposal Annual Report First and Second Ouarters.1998 Solid Waste and Irradiated Fuel Shioments A. Solid Waste Shipped Off-Site for Burial or Disposal (not iiradiated fuel)
- 1. Type of Waste I8l Shipped from VY for Burial or Disposal Unit Quatters 998 c
- a. Spent resins, filter sludges, evaporator bottoms, etc. m' None 2.50E+01 Ci
- b. Dry compressible waste, contaminated equipment, etc. m' None 2.50E+01
[ Ci 3
- c. Irradiated components, control rods, etc. m None 2.50E+01 Ci I
Shipped from Processor (s) for Burial or Disposal Unit '
Quar ers 9 8
- a. Spent resins, filter sludges, evaporator bottoms, etc. m' None 2.50E+01 Ci 8
- b. Dry compressible waste, contaminated equipment, etc. m 2.lE-01 2.50E+0!
Ci 3.37E-05
- c. Irradiated components, control rods, etc. m' None 2.50E+01 Ci m
- 2. Estimate of Major Nuclide Composition (By Type of Waste)
- u. Spent resins, filter sludges, eveporator bottoms, etc. b. Dry compressible waste, contaminated equipment, etc.
Isotope Percent (1) Isotope Percent (1)
Zinc 65 N/A Iron-55 % 7.40E+01 Cesium-137 N/A Zinc-65 % 2.99E+00 Cobalt-60 N/A Cobalt-60 % 1.23E+01 Cesium-134 N/A Manganese-54 % 4.55E+00 Manganese-54 N/A Cesium-137 % 1.21E+00 Iron-55 N/A Chromium-51 % 1.40E+00 Nickel-63 N/A Cerium-144 % l.06E+00 Cerium-144 N/A (1) Includes only those nuclides that are greater than 1% of the total activity
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c
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I TABLE 3 (Continued)
Vermont Yankee Effluent and Waste Disoosal Annual Reoort
[ First and Second Ouarters.1998 L Solid Waste and Irradiated Fuel Shipments
- 3. Disposition of Solid Waste Shipments (1st and 2nd Quarters)
Destination f No. of From VY From Mode of Processor Burial or Disposal Shipments Processor Transportation l X Truck MSC
[
L Oak Ridge, TN 1 X Truck CNS, Inc.
Barnwell, SC
{.
7 X Truck GTS Duratek Oak Ridge TN D. Irradiated Fuel Shipments (Disposition): None..
[ C. Additional Data (1st and 2nd Quarters)
[ . Supplemental Information Shipments from Shipments from VY Shipments from Processors i VY to Processors for Burial or for Burial or Disposal Disposal Class of Solid Waste Shipped 1A None A Type of Containers Used Strong Tight None Strong Tight r Solidification' Agent or Absorbent None None None
[
Note: Sections A.1 and A.2 above do not include the data for the waste shipments from VY to the processors that were not ultimately sent out for burial or disposal in 1998. The
( data for this waste will be included in the report that covers the year that this waste is shipped from the processor or VY for burial or disposal.
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TABLE 3 (Continued)
Vermont Yankee Effluent and Waste Disposal Annual Report Third and Fourth Ouarters.1998 Solid Waste and Irradiated Fuel Shipments A. Solid Waste Shipped Off-Site for Burial or Disposal (not irradiated fuel)
- 1. Type of Waste 3r Shipped from VY for Burial or Disposal Unit q arte s 1 98 Eo,
- a. Spent resins, filter sludges, evaporator bottoms, m3 None 2.50E+01 etc. Ci
- b. Dry compressible waste, contaminated equipment, m3 None 2.50E+01 etc. Ci
- c. Irradiated components, control rods, etc. m3 None 2.50E+01 Ci Unit 3 d a"d 4 o1 Shipped from Processor (s) for Burial or Disposal quane s g
- a. Spent resins, filter sludges, evaporator bottoms, m3 None 2.50E+01 etc. Ci
- b. Dry compressible waste, contaminated equipment, m3 4.4E+00 2.50E+01 etc. Ci 3.2E-02
- c. Irradiated components, control rods, etc. m3 None 2.50E+01 Ci
- 2. Estimate of Major Nuclide Composition (By Type of Waste)
- a. Spent resins, filter sludges, evaporator b. Dry compressible waste, contaminated I bottoms, etc. equipment, etc.
Isotope Percent (1) Isotope Percent (I)
Zine-65 N/A Iron-55 % 7.40E+01 Cesium-137 N/A Zine-65 % 2.99E+00 Cobalt-60 N/A Cobalt-60 % 1.23E+01 I Cesium-134 N/A Manganese-54 % 4.55E+00 Manganese-54 N/A Cesium-137 % 1.21E+00 Ironf5 N/A Chromium-51 % 1.40E+00 Nickel-63 N/A Cerium-144 % ) .06E+00 Cerium-144 N/A , __
(1) Includes only those nuclides that are greater than 1% of the total activity 18 u
h
TABLE 3 (Continued)
Vermont Yankee Effluent and Waste Discosal Annual Report Third and Fourth Ouarters.1998 Solid Waste and Irradiated Fuel Shioments
- 3. Disposition of Solid Waste Shipments (3rd ano 4th Quarters) l Destination l No. of From VY From Mode of Processor Burial or Shipments -Processor Transportation Disposal 8 X Truck Envirocare Clive, Utah 2 X Truck CNS, Inc.
Bemwell, SC 1 X Truck MSC Oak Ridge, TN 5 X Truck GTS Duratek, Oak Ridge, TN B. Irradiated Fuel Shipments (Disposition): None.
C. Additional Data (3rd and 4th Quarters)
SupplementalInformation Shipments from Shipments from VY Shipments from Processors for VY to Processors for Burial or Disposal Burial or Disposal Class of Solid Waste Shipped A Nane A Type of Containers Used Strong Tight None Strong Tight Solidification Agent or Absorbent None None None Note: Sections A.1 and A.2 above do not include the data for the waste shipments from VY to the
. processors that were not_ ultimately sent out for burial or disposal in 1998. The data for this I waste will be included in the report that covers the year that this waste is shipped from the i processor or VY for burial or disposal.
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TABLE 4A Vermont Yankee Maximum ** Off-Site Doses / Dose Commitments to Members of the Public from Liauid and Gaseous Effluents for 1998 (10CFR50, Appendix I)
Dose (mrem))
Source 1 Ouarter 2" Quarter 3 Ouarter 4"' Ouarter Year (**
Liquid Effluents Total Body Dose Footnotes (c) (c) (c) (c) (c)
Organ Dose Footnotes (c) (c) (c) (c) (c)
A!rborne Effluents lodines and 1.79E 3 8.41 E-4 4.72E-3 1.85E-3 9.20E-3 Particulates Footnotes (1) (2) (3) (4)
Noble Gases Beta Air (mrad) 7.18E-4 1.98E-5 1.80E 5 7.56E-4 Footnotes (5) (6) (d) (5)
Gamma Air (mrad) 2.63E 4 1.24E 5 8.86 E-6 2.84E-4 Footnotes (5) (6) (d) (7)
Direct Radiation See Section 3.4 l l
l l
l 12.8 l ' Maximum" means the largest fraction of the corresponding 10CFR50, Appendix I dose design objective, and the largest direct impact from fixed sources for 40CFR190.
(a) The numbered footnotes indicate the age group, organ, and location of the dose receptor, where appropriate.
l (b) The yearly dose is the sum of the doses for each quarter, or a full annual assessment.
l (c) There were no liquid releases in this quarter.
(d) There were no detectable noble gas releases in this quarter.
i (c) " Maximum" dose for the year is the sum of the maximum doses for each quarter. This results in a conservative yearly dose estimate, but still well within the limits of 10CFR 50, Appendix 1.
(1) Child / Thyroid /WSW/2400 meters (2) Inf ant / Thyroid /NW/4400 meters J (3) Infant / Thyroid /NW/4260 meters (4) Child / Thyroid /WSW/2400 meters (5) WSW/2400 meters (6) NW/2750 meters (7) SSE/850 meters I
20
i TABLE 4B Vennont Yankee Maximum Annual Dose Commitments from Direct External Radiatial Plus Liauid and Gaseous Effluents for 1998"'
(40CFR190)
Pathway Total Body Maximum Organ Thyroid (mrem) (mrem) (mrem)
Direct External (a) 10.6 10.6 10.6 Liquids * *
- Gases 1.56E-4 2.52 E.4m 1.53E-4 Annual Total (b) 10.6 10.6 10.6 There was no liquid release in 1998 f
(1) Maximum dose to any organ over all age groups for each release
(*) The location of the projected maximum individual doses from combined direct radiation p'us liquid and gaseous effluents conespond to residences at the southwest boundary relative to the turbine hall.
(a) No occupancy time fraction (assumed 1007c) or residential shielding credit is assumed which would l reduce real doses below the calculated values. Expected direct external radiation doses would be reduced by about 54% with a realistic residential shielding credit and occupancy time (0.7 shielding factor from Regulatory Guide 1.109 and annual occupancy time 6760 hours0.0782 days <br />1.878 hours <br />0.0112 weeks <br />0.00257 months <br />).
(b) Annual dose limits contt 'ned in the EPA radiation protection standards (40CFR190) equal 25 mrem to the total body and any o 'n, except 75 mrem to the thyroid of a real member of the public.
21 1
l TABLE 4C Feceptor Locations for Vermont Yankee Sector Site Boundary '" Nearest Resident <23 A ma \ in (Meters) (Meters) 10 km (Meters)
N 400 1470 -
NNE 350 1400 5520 (Cows)
NE 350 1250 3590 (cows)
ENE 400 970 --
E 500 930 --
[ ESE 700 2830 --
( SE 750 1970 3600 (cows)
SSE 850 2050 5240 (cows)
(
S 385 450 2220 (cows)
SSW 300 450 --
SW 250 410 8200 (cows)
WSW 250 450 9590 (coats)
W 300 620 820 (cows)
WNW 400 1060 6980 f (cows)
NW 550 2600 4260 (cows)
(
NNW 550 2600 --
(1) Vermont Yankee UFSAR Figure 2.2-5.
(2) The location (s) given are based on data from the Vermont Yankee 1998 Land Use Cerisus relative to the plant stack. Gardens are assumed to be present at all resident locations.
22
[
r
TABLE 4D Usane Factors for Various Gaseous Pathways at Vermont Yankee (From Reference 1, Table E-5"))
Veg. Leafy Veg. Milk Meat Inhalation Age Group (kg/yr) (kg/yr) (1/yr) (kg/yr) (m3/yr)
Adult 520 64 310 110 8,000 Teen 630 42 400 65 8,000 Child 520 26 330 41 3,700 Infant 0 0 330 0 1,400 (1) Regulatory Guide 1.109.
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I TABLE 5A VERMONT YANKEE JAN 98 - DEC 98 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STA81LITY CIASS A CIAss FREQUENCY (PERCENT) e .44 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW VRBL TOTAL NPN CALM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 C (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 1 2 1 0 0 4 1 4 0 0 0 0 0 0 0 2 0 15 (1) 2.70 5.41 2.70 .00 .00 10.81 2.70 10.01- .00 .00 .00 .00 .00 .00 .00 5.41 .00 40.54 (2) .01 .02 .01 .00 .00 .05 .01 .05 .00 .00 .00 .00 .00 .00 .00 .02 .00 .18 47 0 1 0 0 0 2 1 0 0 0 0 0 0 0 0 2 0 6 (1) .00 2.70 .00 .00 .00 5.41 2.70 .00 .00 .00 .00 .00 .00 .00 .00 5.41 .00 16.22 (2) .00 .01 .00 00 .00 .02 .01 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .07 8 12 0 'O 0 0 0 0 0 0 1 0 0 0 0 1 0 4 0 6 (1) .00 .00 .00 .00 .00 .00 .00 .00 2.70 .00 .00 .00 .00 2.70 .00 10.81 .00 16.22
[ (2) .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .00 .01 .00 .05 .00 .07 13-18 0 1 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 4 (1) .00 2.70 .00 ' .00 .00 .00 .00 .00 .00 .00 .00 .00 2.70 .00 2.70 2.70 .00 10.81 (2) .00 .01 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .01 .01 .00 .05 19-24' O O 0 0 0 0 0 0 0 0 0 0 1 2 1 1 0 5 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 2.70 5.41 2.70 2.70 .00 13.51 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .02 .01 .01 .00 .06 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 2.70 .00 2.70 (2) .00 .00 .00 .G0 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .01 ALL SPEEDS 1 4 1 0 0' 6 2 4 1 0 0 0 2 3 2 - 11 0 37 (1) 2.70 10.81 2.70 .00 .00 16.22 5.41 10.81 2.70 .00 .00 .00 5.41 8.11 5.41 29.73 .00 100.00
[ (2) .01 .05 .01 .00 .00 .07 .02 .05 .01 .00 .00 .00 .02 .04 .02 .13 .00 .44 (llePERCENT OF ALL 000D 08SERVATIONS FOR THIS PACE (2)* PERCENT OF ALL GOOD 08SERVATIONS FOR THIS PERIOD
( Ce CALM (WIND SPEED LESS THAN OR EQUAL TO .95 NPN)
{
[ ;
pr I
98 $UP REPORTt DOC A-26 r
i >
l- ... . . . . . . .
l
1 TABLE 5B VERMONT YANKEE JAN 98 - DEC 98 METEOROLOGICAL DATA JOINT FREQUENCY DISTR 13'If!0N I 297.0 FT WIND DATA STASILITY CLASS 3 CLASS FREQUENCY (PERCENT) o WIND DIRECTION FROM
.86 i SPEED MPH N NNE NE ENE E ESE SE SSE $ SSW SW WSW W kNW NW NNW VR$L 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 I C-3 0 1 0 1 1 2 'l 0 0 0 0 0 0 0 1 0 0 7 (1) .00. 1.37 .00 1.37 1.31 2.74 1.37 .00 .00 .00 .00 .00 .00 .00 1.37 .00 .00 9.59 (2) .00 .01 .00 .01 .01 .02 01 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .08 4-1 0 0 0 0 1 til (2) 0
.00
.00
.00
.00
.00
.00 0
.00
.00 0
.00
.00 1
1.37 1.37
.01 .01 1
.00
.00
.00
.00 0
.00
.00 0
.00
.00 0
.00 0
.00 .00
.00 0
.00
.00 2
2.74 6.85
.02 .06 5 0
.00
.00 12.33
.11 9
8-12 1 0 0 0 0 1 0 4 1 0 0 1 0 0 1 12 0 21 (1) 1.37 .00 .00 .00 .00 1.37 .00 5.48 1.37 .00 .00 1.37 .00 .00 1.37 16.44 .00 28.77 I (2) .01 .00 .00 .00 .00 .01 .00 .05 .01 .00 .00 .01 .00 .00 .01 .14 .00 .25 13-18 2 0 0 0 1 1 0 1 3 0 0 0 2 1 4 10 0 25 (1) 2.74 .00 .00 .00 1.37 1.37 .00 1.37 4.11 .00 .00 .00 2.74 1.37 5.48 13.70 .00 34.25 (2) .02 .00 .00 .00 .01 .01 .00 .01 .04 .00 .00 .00 .02 .01 .05 .12 .00 .30 I 19-24 ill 0
.00 0
.00 .00 0 0
.00 0
.00 .00 0
.00 0
.00 0
.00 0
.00 0
.00 0
.00 0
.00 0 2 3 2.74 4.11 6.85 5
.00 0 10 13.70 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .04 .06 .00 .12 07 24 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 1 (1)
(2)
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00 1.37
.01
.00
.00
.00
.00
.00
.00 1.37
.01 ALL SPEEDS 3 1 0 1 2 5 2 5 4 0 0 1 2 4 11 32 0 73 (1) 4.11 1.37 .00 1.37 2.74 6.85 2.74 6.85 5.48 .00 .00 1.37 2.74 5.48 15.07 43.84 .00 100.00
.06 I (2) .04 .01 .00 .01 .02 .06 (1)ePERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE
.02 .05 .00 .00 .01 .02 .05 .13 .38 .00 .86 (2)ePERCENT OF ALL GOOD 08SERVATIONS FOR THIS PERIOD Ce CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPN) l I
I
[
[-
l L
98 St*P REPORTI MC A-27 F
l
- i. .......i..........__.. _ _ _ _ _ _ _ _ _ . _ _ _
I TABLESC VERMONT YANKEE JAN 98 - DEC 98 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 297.0 FT WIMD DATA STABILITY CIASS C CLASS FREQUENCY (PERCENTI e 2,06 WIND DIRECTION FROH SPEED N NNE NE ENE E ESE SE $$E S SSW SW WSW W WNW NW IdW VRBL TOTAL HPH 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 C3 3 1 0 0 1 0 1 1 0 1 0 0 0 0 0 0 0 8 (1) 1.72 .57 .00 .00 .57 .00 .57 .57 .00 .57 .00 .00 .00 .00 .00 .00 .00 4.60 1 (2) .04 .01 .00 .00 .01 .00 .01 .01 00 .01 .00 .00 .00 .00 .00 .00 .00 .09 4-7 4 3 1 1 1 0 3 4 0 0 0 0 0 0 4 11 0 32 (1) 2.30 1.72 .57 .57 .57 .00 1.72 2.30 .00 .00 .00 .00 .00 .00 2.30 6.32 .00 18.39
.05 .04 .00 .05 .00 .00 .00 .00 .00 .00 .05 .33 .00 .38 I (2) 8-12 5 2
.01 1
.01 0
.01 1 1
.04 2 7 7
.57 1 2 1.15 0
.00 2
1.15 .57 1 3 15 0
.00 50 28.74 (1) 2.87 1.15 .57 .00 .57 .57 1.15 4.02 4.02 1.72 8.62 (2) .04 .02 .01 .00 .01 .01 .02 .08 .08 .01 .02 .00 .02 .01 .04 .18 .00 .59 l 13-18 (1)
(2) 2 1.15
.02 0
.00
.00 0
.00
.00 0
.00
.00 0
.00
.00 1
.57
.01 0
.00
.00 1
.57
.01 5
2.87
.06
.57
.01 1 0
.00
.00 1
.57
.01 10 4 10 5.75 2.30 5.75 10.34
.12 .05 .12 18
.21 0
.00
.00 53 30.44
.63 19-24 3 0 0 0 0 0 0 0 0 0 0 1 0 5 5 11 0 25 (1) 1.72 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .57 .00 2.87 2.87 6.32 .00 14.37 1 (2) .04 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .06 .06 .13 .00 .30 CT 24 1 0 0 0 0 0 0 0 0 0 0 0 0 1 2 2 0 6 (1) .57 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .57 1.15 1.15 .00 3.45 (2) .01 .00 .00 .00 .00 .00 .00 .C0 .00 .00 .00 .00 .00 .01 .02 .02 .00 .07 I ALL SPEEDS 18 6 2 1
.57 3 2 6 13 12 3 2 2 12 11 1.72 1.15 3.45 7.47 6.90 1.72 1.15 1.25 6.90 6.32 13.79 32.76 24 57 0
.00 174 100.00 (1) 10.34 3.45 1.15 (2) .21 .07 .02 .01 .04 .02 .07 .15 .14 .04 .02 .02 .14 .13 .28 .67 .00 2.06 I (1)= PERCENT OF ALL C000 CBSERVATIONS FOR THIS PAGE (2)= PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD Ce CALM (WIND SPEED LESS TRAN OR EQUAL TO .95 MPH) l I
I I
I L
[
[ 98 5CP REPORTI MC A-28 L
r
I TABLE SD VERMONT YANKEE JAN 98 - DEC 98 METEOROLOGICAL DATA JOINT FREQUDICY DISTRIBtMION 297.0 FT WIND DATA STASILITY CLASS D CLASS FREQUENCY (PERCENT) a 49.61 l' WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE 0 SSW SW WSW W WNW NW NNW VRBL TOTAL MPH CALM 1 4 1 0 2 1 0 0 1 0 0 1 0 0 0 0 0 11 (1) .02 .10 .02 .00 .05 .02 .00 .00 .02 .00 .00 .02 .00 .00 .00 .00 .00 .26 (2) .01 .05 .01 .00 .02 .01 .00 .00 .01 .00 .00 .01 .00 .00 .00 .00 .00 .13 C-3 63 45 48 25 38 50 71 62 50 15 18 12 7 19 23 56 0 602 (1) 1.50 1.07 1.14 .60 .90 1.19 1.69 1.48 1.19 .36 .43 .29 .17 .45 .55 1.33 .00 14.34 (2) 74 .53 .57 .30 .45 .59 .84 .73 .59 .18 .21 .14 .08 .22 .27 .66 .00 7.11
[ 47 126 37 29 18 40 59 129 137 110 22 18 20 11 23 32 188 0 999 (1) 3.00 .88 .69 .43 .95 1.41 3.07 3.26 2.62 .52 .43 .48 .26 .55 .76 4.48 .00 23.79
( (2) 1.49 .44- .34 .21 .47 .70 1.52 1.62 1.30 .26 .21 .24 .13 .27 .38 2.22 .00 11.80 8-12 146 58 28 13 24 48 67 131 251 44 32 29 46 75 76 240 0 1303 (1) 3.48 1.38 .67 .31 .57 1.14 1.60 3.12 5.98 1.05 .76 .49 1.10 1.79 1.81 5.72 .00 31.15 (2) 1.72 .69 .33 .15 .28 .57 .79 1.55 2.97 .52 .38 .34 .54 .89 .90 2.84 .00 15.45 13-18 135 - 26 9 15 4 10 12 19 83 28 13 15 47 118 106 260 0 902 (1) 3.22 .62 .21 .36 .14 .24 .29 .45 1.98 .67 .31 .36 1.12 2.81 2.52 6.19 .00 21.48 (2) 1.59 .31 .11 .18 .07 .12 ,14 .22 .98 .33 .15 .18 .56 1.39 1.25 3.07 .00 10.66 19-24 37 1 1 1 1 1 0 0 13 8 4 3 12 55 49 127 0 313 (1) .88 .02 .02 .02 .02 .02 .00 .00 .31 .19 .30 .07 .29 1.31 1.17 3.02 .00 7.45 (2) .44 .01 .01 .01 .01 .01 .00 .00 .15 .09 .05 .04 .14 .65 .58 1.50 .00 3.70 GT 24 2 0 0 0 0 0 0 0 1 1 0 0 3 10 7 40 0 64 l (1)
(2)
.05
. 02
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.02
.01
.02
.01
.00
.00
.00
.00
.07
.04
.24
.12
.17
.08
.95
.47
.00
.00 1.52
.76 ALL SPEEDS 510 171 116 72 111 169 279 349 509 118 85 80 126 300 293 911 0 4199 (1) 12.15 4.07 2.76 1,71 2.64 4.02 6.64 8.31 12.12 2.81 2.02 1.91 3.00 7.14 6.98 21.70 .00 100.00 (2) 6.03 2.02 1.37 .85 1.31 2.00 3.30 4.12 6.01 1.39 1.00 .95 1.49 3.54 3.46 10.76 .00 49.61 (1)= PERCENT OF ALL 000D OBSERVATIONS FOR THIS PAGE (2)= PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD Ce CAIJt (WIND SPEED f.ESS THAN OR EQUAL 70 .95 MPHI
(
{
4
{
f 94 SL'P REPORTI DOC A-29 L
l l 1 1 ets ss VERMONT YANKEE JAN 98 - DEC 98 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIB*JTION 297.0 FT WIND DATA STABILITY CLASS E CLASS FREQUENCY (PERCENT) e 31.75 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW VREL TOTAL MPH l CAIJ4 4 4 4 4 4 0 0 0 0 1 1 0 1 1 2 1 0 27 (1) .15 .35 .15 .15 .15 .00 .00 .00 .00 .04 .04 .00 .04 .04 .07 .04 .00 1.00 I (2) .05 .05 .05 .05 .05 .00 .00 .00 .00 .01 .01 .00 .01 .01 .02 .01 .00 .32 C-3 113 51 51 59 58 74 96 62 36 17 11 15 12 21 40 95 0 til (1) 4.21 1.90 1.90 2.20 2.16 2.75 3.57 2.31 1.34 .63 .41 .56 .45 .78 1.49 3.54 .00 30.18 (2) 1.34 .60 .60 .70 .69 .87 1.13 .73 .43 .20 .13 .18 .14 .25 .47 1.12 .00 9.58 I 4-7 147 25 10 7 29 28 121 108 63 20 16 19 25 24 40 257 0 939 (1) 5.47 .93 .37 .26 1.08 1.04 4.50 4.02 2.34 .74 .60 .71 .93 .89 1.49 9.56 .00 34.95 (2) 1.74 .30 .12 .08 .34 .33 1.43 1.28 .74 .24 .19 .22 .30 .28 .47 3.04 .00 11.09 I 4-12 (1)
(2) 10 2.61
.43 8
.30
.C9 1
.04
.01 0
.00
.00 3
.11
.04 9
.33
.11 29 44 64 1.08 1.64 2.38 1.04
.34 .52 .76 28
.33 20
.74
.24
.52
.17 14 41 48 1.53 1.79 1.6i
.48 .57 4h
.53 248
'.23 2.>'
.00
.00 0 672 25.01 7.94 13 18 23 2 0 0 0 1 4 1 17 13 2 4 25 23 20 78 0 213 (1) .86 .07 .00 .00 .00 .04 .15 .04 .63 .48 .07 .35 .93 .86 74 2.90 .00 7.93 1 (2) .27 .02 .00 .00 .00 .01 .05 .01 .20 .35 .02 .05 .30 .27 .24 .92 .00 2.52 19-24 2 0 0 0 0 1 0 0 1 0 0 0 2 3 2 14 0 25 (1) .07 .00 .00 .00 .00 .04 .00 .00 .04 .00 .00 .00 .07 .11 .07 .52 .00 .93 (2) .0* .00 .00 .00 .00 .01 .00 .00 .01 .00 .00 .00 .02 .04 .02 .17 .00 .30 I 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 359 90 66 10 94 113 250 215 181 19 50 52 106 120 149 693 0 2687 g (1) 13.36 3.35 2.46 2.61 3.50 4.21 9.30 8.00 6.74 2.94 1.86 1.94 3.94 4.47 5.55 25.79 .00 100.00 (2) 4.24 1.06 .78 .83 1.11 1.34 2.95 2.54 2.14 .93 .59 .61 1.25 1.42 1.76 8.19 .00 31.75 (1)sPERCENT OF ALL C00D OBSERVATICf3 FOR THIS PACE (2)ePERCENT OF ALL C00D OBSERVATIONS FOR THIS PERIOD I Ce CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) l I
I I
{ 98 WP REPORTl DOC A-30 -a L
r
TABLE 5F VERMONT YANKEE JAN 98 - DEC 98 METEORO .CCICAL DATA J0 NT FREQUENCY DISTR 187f!ON 297.0 97 WLJ DATA STABILITY CLASS F CLASS FREQUENCY (PERCDTF)
- 12.93 WIND IdRECTION FROM SPEED N NNE HE die E ESE SE SSE S SSW SW WSW W WNW NW s4NW VRSL TOTAL MPH CALM 3 1 2 0 1 2 0 1 0 0 1 0 1 3 1 0 17 I
1 (1) .27 .09 .18 .00 .09 .18 .00 .09 .00 .00 .09 .00 .09 .27 .09 .09 .00 1.55 (2) .04 .01 .02 .00 .01 .02 .00 .01 .00 .00 .01 .00 .01 .04 .01 .01 .00 .30 C-3 44 32 29 32 23 31 34 28 18 8 16 11 12 13 29 44 0 404 (1) 4.02 2.93 2.65 2.93 2.10 2.8) 3.11 2.56 1.65 .73 1.46 1.01 1.10 1.19 2.65 4.02 .00 36.93 I (2) 4-1
.52 58
.38 9
.34 6
.38 1
.27 7
.37 22
.40 65
.33 67
.J1 34
.09 11
.19 14
.13 10
.14 11
.15 17
.34 27
.52 In9
.00 0
4.77 468 (1) 5.30 .82 .55 .09 .64 2.01 5.94 6.12 3.11 1.01 1.28 .91 1.01 1.55 2.47 9.96 .00 42.78 (2) .69 .11 .07 .01 .04 .26 .77 .79 .40 .13 .17 .12 .13 .20 .32 1.29 .00 5.53 1 8-12 (1) 1.92 21
.00 0
.00 0
.09 1
.09 1
.18 2 18 1.65 1.01 11 12 1.10 .37 4
.37 4 8 73 .73 8
.82 9 15 1.37 1.13 18
.00 0 192 17.55 (2) .25 .00 .00 .01 .01 .02 .21 .13 .14 .05 .05 .09 .09 .11 .18 .92 .00 2.27 13-18 0 0 0 0 0 0 0 0 0 2 0 0 3 1 2 5 0 13
- 11) .00 .00 .00 .00 .00 .00 .00 .00 .00 .18 .00 .00 .27 .09 .18 .46 1 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .04 .01 .02 .06
.C0
.00 1.19
.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 .CC .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 1 07 24 0 0 0 0 0 0 0 0 0 6 0 0 0 0 0 0 0 0 (16 .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 l ALL SPEE05 126 42 37 34 32 (1) 11.52 3.84 3.38 3.11 2.93 5.21 10.69 9.78 (2) 1.49 .50 .44 .40 .38 57
.67 1,38 1.26 117 101 64 25 35 29 35 43 5.85 2.29 3.20 2.65 3.20 3.93 6.76 21.66
.76 .30 .41 .34 .41 .51 74 23?
.87 2.80
.00
.00 0 1094 100.00 12.93 (llePERCDrf CF ALL C00D CBSERVATIONS FOR THIS PAGE (2)ePERCENT OF ALL C000 CBSERVATIONS FOR THIS PERIOD I Ce CAthi (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) l I
I I
l 1
,l I a ser RzPoRn mC A-31 u
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w . . _ _ _ _ _ _ _ _ . _
k.
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TABLE 5G
[
VElut0N'i "4 4 JAN 98 = DEC 90 NETEOR0!AGICAL DATA J03rr FREQUENCY DISTRIBUTION 297.0 FT WIND DATA STABILITY CLASS G CtASS FREQUDICY (PERCDff)
- 2.36 WIND DIRECT 10N FROM SPEED N NNE NE ENE ~ E ESE SE $$E S SSW SW WSW W WdW NW NNW VR3L TOTAL NPN CMA . O. 0 0 0 2 0 1 2 0 0 0 0 0 0 0 0 0 5 (1) .00 .00 .00 .00 1.00 .00 .50' 1.00 .00 .00 .00 .00 .00 .00 .00 .00 .00 2.50
[ (2) .00 .00 .00 .00 .02 .00 .01 .02 .00 .00 .00 .00 .00 .00 .00 .00 .00 .06 C-3 8 7 3 2 5 3 6 1 4 0 2 1 4 7 1 4 0 50 (1) 4.00 3.50 1.50 1.00 2.50 1.50 3.00 .50 2.00 .00 1.00 .50 2.00 3.50 .50 2.00 .00 29.00 (2) .09 .08 .04- .02 .04 .04 .07 .01 .05 .00 .02 .01 .05 .08 .01 .05 .00 .69 41 4 0 4 0 2 3 9 14 13 9 4 4 3 5 5 8 0 89 (1)' 2.00 .00 2.00 .00 1.00 1.50 4.50 7.00 6.50 4.50 3.00 2.00 1.50 2.50 2.50 4.00 .00 44.50 (2) .05 .00 .05 .00 .02 .04 .11 .17 .15 .11 .07 .05 .04 .06 .06 .09 .00 1.05 8-12 1 0 0 0 0 0 4 5 5 4 1 4 6 9 2 5 0 46
.50 .00 .00 .00 .00 .00 2.00 2.50 2.50 2.00 .50 2.00 3.00 4.50 1.00 2.50 .00 23.00
[ til (2) .01 .00 .00 .00 .00 .C0 .05 .05 .06 .05 .01 .05 .07 .11 .02 .06 .00 .54 13-18 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 2 (1) .00 .00 .00 .00 .00 .00 .00 .00 .50 .00 .00 .00 .50 .00 .00 .00 .00 1.00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .01 .00 .00 .00 .00 .02 L 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 07 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (11 .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 .00 400 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 13 . 7 7 2 9 6 20 22 23 13 9 9 14 21 8 17 0 200 (1) . 6.50 3.50 3.50 1.00 4.50 3.00 10.00 11.00 11.50 4.50 4.50 4.50 7.00 10.50 4.00 8.50 .00 100.00 (2) .15 .08 .08 .02 .31 .07 .24 .26 .27 .15 .11 .11 .17 .25 .09 .30 .00 2.36
[.
(1). PERCENT OF ALL GOOD CSSERVATIONS FOR THIS PAGE (2)* PERCENT OF ALL GOOD CBSERVATIONS FOR THIS PERICO Co CALN (WIND SPEED LESS THAN CA EQUAL To .95 NPN)
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m, .E T_ xa o
I TABLE 5H VEPRONT YANKEE JAN 98
- DEC 98 METEOROLOGICAL DATA JOINT FREQUENCY DISTR 387 TION 297.0 FT WIND DATA STA3!LITY CLASS ALL CLASS FREQUDJCY (PERCDIT) = 100.00 WIND DIRECTION FROM SPEED N NNE NE Dit E ESE SE SSE S SSW SW WSW W WIN NW NNW VP3L TOTAL MPH CALM 8 9 7 4 9 3 1 3 1 1 2 1 2 4 3 2 0 60 til .09 .11 .08 .05 .11 .04 .01 .04 .01 .01 .02 .01 .02 .05 .04 .02 .00 .71 (2) .09 .11 .08 .05 .11 .04 .01 .04 .01 .01 .02 .01 .02 .05 .04 .02 .00 .71 232 139 132 119 126 164 210 158 47 39 35 60 94 201 0 1905 l C-3 (1)
(2) 2.74 1.64 1.56 1,41 1,49 1.94 2.48 1.87 1.28 2.74 1.44 1.56 1.41 1.49 1.94 2.48 1.87 1.28 108 41
.48
.48
.56
.56
.46
.46
.41
.41
.71
.71 1.11 2.37 1.11 2.31
.00
.00 22.51 22.51 47 339 75 50 27 79 115 329 330 220 62 54 53 50 49 110 580 0 2542 (1) 4.01 .89 .59 .32 .93 1.36 3.89 3.90 2.60 .73 .64 .63 .59 .82 1.30 6.85 .00 30.03 1 (2) 4.01 .89 .59 .32 .93 1.36 3.89 3.90 2.60 .73 .64 .63 .59 .82 1.30 6.85 .00 30.03 8-12 244 68 30 14 29 61 120 202 341 81 59 56 103 143 142 602 0 2295 (1) 2.88 .80 .35 .17 .34 72 1.42 2.39 4.03 .96 70 .66 1.22 1.69 1.68 7.11 .00 27.11 (2) 2.88 .80 .35 .17 .34 .72 1.42 2.39 4.03 .96 .70 .66 1.22 1.69 1.68 7.11 .00 27.11 I 13-18 162 29 9 15
.18 7 13
.15 16
.19 22
.26 109 1.29 44
.52 15
.18 20
.24 89 147 143 372
.00 0 1212 14.32 (1) 1,91 .34 .11 .08 1.05 1.74 1.69 4.40 l2) 1.91 .34 .11 .18 .08 .15 .19 .26 1.29 .52 .18 .24 3.05 1,74 1.69 4.40 .00 24.32 19-24 42 1 1 1 1 2 0 0 14 8 4 4 15 67 60 158 0 378 (1) .50 .01 .01 .01 .01 .02 .00 .00 .17 .09 .05 .05 .18 .79 .71 1.87 .00 4.47 (2) .50 .01 .01 .01 .01 .02 .00 .00 .17 .09 .05 .05 .18 .79 .71 1.87 .00 4.47 GT 24 3 0 0 0 0 0 0 0 1 1 0 0 3 12 9 43 0 72 (1) .04 .00 .00 .00 .00 .00 .00 .00 .01 .01 .00 .00 .04 .14 .11 .51 .00 .85 I (2) .04 .00 .00 .00 .00 .00 .00 .00 .01 .01 .00 .00 .04 .14 .11 .51 .00 .85 ALL SPEEDS 1030 321 229 180 251 358 676 715 794 238 181 173 297 502 561 1958 0 8464 (1) 12.17 3.79 2.71 2.13 2.97 4.23 7.99 8.45 9.38 2.81 2.14 2.04 3.51 5.93 6.63 23.13 .00 100.00 (2) 12.17 3.79 2.11 2.13 2.97 4.23 7.99 4.45 9.38 2.81 2.14 2.04 3.51 5.93 6.63 23.13 .00 100.00 1 (1)oFERCINF OF ALL C00D CBSERVATIONS FOR THIS PAGE (2)ePERCENT OF ALL C00D CSSERVATIONS FOR THIS PERIOD Ce Calm (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) l I
I I
[
[
f 98 StlP REPORTI MC A-33 u
TABLE 6A VERNONT YANKEE JAN 98 - DEC 98 METEOROIAGICAL DATA JOINT FREQUENCY DISTRISUTION 35.0 FT WIND DATA STABILPTY CIASS A CLASS FREQUENCY (PERCDrf) e 2.19 WIND DIRECTION TROW SPEED N letE NE ENE E ESE $1 $$E $ SSW SW WSW W WNW NW NNW VR8L TOTAL
[ MPH CALN 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 C3 2 1 2 3 5 1 1 2 2 1 1 0 0 0 2 0 0 23 (1) 1.09 .54 1.09 1.63 2.72 .54 .54 1.09 1.09 .54 .54 .00 .00 .00 1.09 .00 .00 12.50 (2) .02 .01 .02 .04 .06 .01 .01 .02 .02 .01 .01 .00 .00 .00 .02 .00 .00 .27 47 14 2 0 0 0 1 2 4 2 0 0 0 1 2 7 44 0 79
[- (1) 7.61 1.09 .00 .00 .00 .54 1.09 2.17 3.09 .00 .00 .00
.00
.54 1.09 3,80 23.91 .00 42.93 (2) .17 .02 .00 .00 .00 .01 .02 .05 .02 .00 .00 .01 .02 .08 .52 .00 .94 8 12 10 1 0 0 0 0 0 2 3 3 0 1 4 4 11 32 0 71 (1) 5.43 .54 .00 .00 .00 .00 .00 1.09 1.43 1.43 .00 .54 2.17 2.17 5.98 17.39 .00 38.59
( (2) .12 .01 .00 .00 .00 .00 .00 .02 .04 .04 .00 .01 .05 .05 .13 .38 .00 .85 13-18 0 0 0 0 0 0 0 0 0 0 0 0 1 4 4 0 0 11 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .54 3.26 2.17 .00 .00 5.98 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .07 .05 .00 .00 .13
[ 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
- 12) .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)
(2)
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00 ALL SPEEDS 26 4 2 3 5 2 3 8 7 4 1 1 6 12 24 76 0 184 (in 14.13 2.17 1.09 1.63 2.72 1.09 1.63 4 35 3.80 2.17 .54 .54 3.26 4.52 13.04 41.30 .00 100.00 (2) .31 .05 .02 .04 .06 .02 .04 , 10 .08 .05 .01 .01 .07 .14 .29 .90 .00 2.19
[
(1)* PERCENT OF ALL C00D OSSERVA720NS FOR THIS PAGE (2)aPERCENT CF ALL C000 C8SERVATIONS FOR THIS PER104 Ce CAIJt (WIND SPktD LESS THAN OR EQUAL 70 .95 MPH)
[
{
[
{
t u stP REPORTimC A-34
[
I
'~
\
l 1f/\l31 Ei 6,13 VERM0ert YANREE JAN 98
- DEC 98 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WINO DATA STABILITY CIASS S CLASS FREQUENCY (PERCENT) e 2.12 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW VRBL TOTAL MPH
' 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 2 2 '2- 0 2 0 0 1 0 0 0 1 0 2 3 0 20 (1) 2.81 1.12 1.12 1.12 .00 1.12 .00 .00 .56 .00 .00 .00 .56 .00 1.12 1.69 .00 11.24 (2) .06 .02 .02 .02 .00 .02 .00 .00 .01 .00 .00 .00 .01 .00 .02 .04 .00 .24 4-7 16 2 3 1 1 2 3 15 4 1 1 1 1 2 6 18 0 77 (1) 8.99 1.12 1.69 .56 .56 1.12 1.69 8.43 2.25 .56 .56 .56 .56 1.12 3.37 10.11 .00 43.26 (2) .19 .02 .04 .01 .01 .02 .04 .18 .05 .01 .01 .01 01 .02 .07 .21 .00 .92 0-12 13 2 0 0 0 0 0 1 5 2 1 4 3 6 5 20 0 62 (1) 7.30 1.12 .00 .00 .00 .00 .00 ,56 2.81 1.12 .56 2.25 1.69 3.37 2.81 11.24 .00 34.83 (2) .15 .02 .00 .00 .00 .00 .00 .01 .06 .02 .01 .05 .04 .07 .06 .24 .00 .74 13 18 2 0 0 0 0 0 0 0 2 0 0 0 1 5 8 0 0 18 (1) 1.12 .00 .00 .00 .00 .00 .00 .00 1.12 .00 .00 .00 .56 2.81 4.49 .00 .00 10.11 (2) .02 .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .00 .01 .06 .10 .00 .00 .21 19 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 til .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 00 .56 .00 .00 .56 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 00 .01 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .C0 .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 36 6 5 3 1 4 3 16 12 3 2 5 6 13 22 41 0 178 (1) 20.12 3.37 2.81 1 69 .56 2.25 1.69 8.99 6.74 1.69 1.12 2.81 3.37 7.30 12.36 23.03 .00 100.00 (2) .43 .07 .06 .04 .01 .05 ,04 .19 .14 .04 .02 .06 .07 .15 .26 .49 .00 2.12 (1). PERCENT OF ALL C00D OBSERVATIONS FOR THIS PAGE (2)= PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD Ce CAIJi (WIND SPEED LESS THAN OR EQUAL 70 .95 MPH) l M SL'P REPORTI. DOC A-35
b b
TABLE 6C
[
vrRMOprF YANKEE JAN 98 - DEC 90 METEOROLOQ1 CAL DATA JOINT FRE7JENCY DISTRIBUTION 35.0 FT WIND CATA STABILITY CLASS C CLASS FREQUENCY (PERCDrr) e 4.20 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE S $$W SW WSW W WNW NW NNW VRBL 77FAL
[ MPH CAIJE 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 4 S 3 0 3 3 2 1 0 0 3 1 1 2 7 0 40 (1) 1.42 1.13 1.42 .45 .00 .85 .85 .57 .28 .00 .00 .85 .28 .28 .57 1.98 .00 11.33 (2) .06 .05 .06 .04 .00 .04 .04 .02 .01 .00 .00 .04 .01 .01 .02 .08 .00 .48 4-7 24 14 1 3 6 12 13 22 19 5 5 4 5 6 9 26 0 174
[ (1) 6.80 3.97
.29 .17
.28
.01
.85
.04 1.70 3,40 3.48 6.23 5.38 1.42 1.42 1.13 1.42 1.70 2.55 7.37
.07 .15 .26 .23 .06 .06 .05 .06 .07 .11 .31
.00
.00 49.29 2.07 (2) .14 8-12 20 4 0 0 1 5 0 6 20 5 5 3 7 15 9 14 0 114 (1) 5.67 1.13 .00 .00 .28 1.42 .00 1.70 5.67 1,42 1.42 .85 1.98 4.25 2.55 3.97 .00 32.29 (2) .24 .05 .00 .00 .01 .06 .00 .07 .24 .06 .06 .04 .08 .18 .11 .17 .00 1.36 13 18 1 1 0 0 0 0 0 0 0 0 1 0 2 9 9 1 0 24
- (1) .28 .28 .00 .00 .00 .00 .00 .00 .00 .00 .28 .00 .57 2.55 2.55 .28 .00 6.80 (2) .01 .01 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .02 .11 .31 .01 .00 .29
[ 19-24 (1) 0
.00 0
.0C 0
.00 0
.00 0
.00 .00 0 0
.00 0
.00 .00 0 0
.00 0
.00 0
.00 .00 0 1
.28 0
.00 0
.00 0
.00 .28 1
(2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .00 .00 .01 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 50 23 6 6 7 20 16 30 40 10 11 10 15 32 29 48 0 353 (1) 14.16 6.52 1.70 1.70 1.98 5.67 4.53 8.50 11.33 2.83 3.12 2.83 4.25 9.07 8.22 13.60 .00 100.00 (2) .60 .27 .07 .07 08 .24 .19 .36 .48 .12 .13 .22 .18 .38 .35 .57 .00 4.20 (1)sPERCENT CP ALL C00D OBSERVATIONS FOR THIS PACE (2)ePERCSNT OF ALL C000 CBSERVATIONS FOR THIS PERIOD Ce CALM (WIND SPEED LESS THAN OR E7JAL 70 .95 HPH)
[
[
[
L
{
98 SL'P REPORTI DOC A-36 f
l --
i -
[
TABLE 6D
[-
VERNONT YANKEE JAN 98 - DEC 98 NETEOR01401 CAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 PT WIND CATA RTABILITY CLASS D CLASS FREQUENCY (PERCENTI e 41.18 WIND DIRECTION FRON SPEED N NME NE ENE E ESE SE SSE S SSW SW WSW W WNW. NW NtM VRaL TOTAL
[ NPN CAIJI 2 1 1 0 2 2 1 0 0 0 1 0 3 1 0 1 0 15 (1) .06 .03 .03 '. 0 0 .06 .06 .03 .00 .00 .00 .03 .00 .09 .03 .00 .03 .00 .43
-(2) .02 . 01 . .01 .00 .02 .02 .01 .00 .00 .00 .01 .00 .04 .01 .00 .01 .00 .28 C.3 98 71 57 65 61 57 78 78 64 55 31 29 32 40 77 126 0 1025 (1) 2.83 2.05 1.65 1.88 1.94 1.65 2.24 2.26 1.85 1.59 .90 .44 .93 1.16 2.23 3.64 .00 29.64 (2) 1.17 .85 .54 77 .00 .48 .93 .93 .76 .65 .37 .35 .38 .48 .92 1.50 .00 12.21 47 230 91 13 41 60 73 64 144 219 43 26 27 39 45 91 274 0 1514 (1) 6.65 2.63 1.24 1.19 1.14 2.11 1.97 4.16 6.33 1.24 75 78 1.13 1.30 2.63 7.92 .00 43.78
[ (2) 2.74 1.08 .51 .49 .71 .87 .81 1.11 2.61 .51 .31 .32 .46 .54 1.08 3.26 .00 18.03 8 12 154 40 21 11 7 12 2 11 96 36 16 5 34 108 90 118 0 761 til 4.45 1.16 .61 .32 .20 .35 .06 .32 2.78 1.04 .46 .14 .98 3.12 2.60 3.41 .00 22.01 (2) 1.83 .48 .25 .13 .08 .14 .02 .13 1.14 .43 .19 .06 .40 1.29 1.07 1.41 .00 9.06 13 18 15 3 1 0 1 0 0 0 8 6 0 0 5 51 35 10 0 135 (1) 41 .09 .03 .00 .03 .00 .00 .00 .23 .17 .00 .00 .14 1.47 1.01 .29 .00 3.90 (2) .18 .04 .01 .00 .01 .00 .00 .00 .10 .07 .00 .00 .06 .61 .42 .12 .00 1.61 19 24 0 0 0 0 0 0 0 0 0 0 0 0 2 3 3 0 0 8
[.
(1) .00 .04 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .06 .09 .09 .00 .00 .23 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .04 .04 .00 .00 .10 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 499 206 123 117 137 144 149 233 387 140 14 61 115 248 296 529 0 3458 til 14.43 5.96 3.56 3.38 3.96 4.16 4.31 6.74 11.19 4.05 2.14 1,76 3.33 7.17 8.56 15.30 .00 100.00 (2) 5.94 2.f5 1.46 1.39 1.63 1.71 1.77 2.77 4.61 1.67 .88 .73 1.37 2.95 3.52 6.30 .00 41.18
[- (llaPEllCENT OF ALL COCD CSSERVATIONS TOR THIS PACE (2)sPERCENT OF ALL C00D CSSERVA7 IONS FOR THIS PERIOD C= CALN (WIND SPEED LESS THAN OR EQUAL TO .95 MPH)
[
[
[
[
{
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r a lcP REPoRitDoc A-37 i
L I
l
TABLE 6E VERMONT YANKEE JAN 98 . DEC 98 METEOROLOGICAL DATA JOINT FREQCDICY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS E CIASS FREQUENCY (PERCDIT) = 31.26 WIND DIRECTION FROM
[ SPEED N NNE HE ENE E ESE SE SSE S SSW SW WSW W WNW NW ID4W YR8L T7FAL MPM
(
CALM 3 8 2 4 3 2 1 4 5 7 2 5 3 4 3 3 0 59 (1) .11 .30 .08 .15 .11 .08 .04 .15 .19 .27 .08 .19 .31 .35 .11 .11 .00 2.25 (2) .04 .10 .02 .05 .04 .02 .01 .05 .06 .08 .02 .06 .04 .05 .04 .04 .00 .70
{ C=3 103 39 26 34 25 48 52 77 91 til 186 140 149 133 169 114 0 1599 (1) 3.92 1.49 .99 1.30 .95 1.83 1.98 2.93 3.47 4.30 1.09 5.33 5.68 5.07 6.44 4.15 .00 60.91 (2) 1.23 .46 .31 .40 .30 .57 .62 .92 1.08 1.35 2.21 1.67 1.77 1.58 2.01 2.55 .00 19.04 47 99 13 3 3 4 16 26 57 91 38 20 21 55 69 102 181 0 798 (1) 3.77 .50 .11 .11 .15 .61 .99 2.17 3.47 1.45 76 .80 2.10 2.63 3.89 6.90 .00 30.40 (2) 1.18 .15 .04 .04 .05 .19 .31 .68 1.08 .45 .24 .25 .65 .82 1.21 2.16 .00 9.50 8 12 16 3 0 0 0 2 1 0 16 3 2 3 11 32 36 34 0 159
(!) .61 .11 .00 .00 .00 .08 .04 .00 .61 .11 .08 .11 .42 1.22 1.37 1.30 .00 6.06 (2) .19 .04 .00 .00 .00 .02 .01 .00 .19 .04 .02 .04 .13 .38 .43 .40 .00 1.89
[
13 18 2 0 0 0 0 0 0 0 2 0 0 0 0 0 2 4 0 10 (1) .08 .00 .00 .00 .00 .00 .00 .00 .08 .00 .00 .00 .00 .00 .08 .15 .00 .38 (2) .02 .00 .00 .00 .00 .00 .00 .00 .02 .00 .00 .00 .00 .00 .02 .05 .00 .12 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
( (1)
(2)
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00
.00 ALL SPEEDS 223 63 31 41 32 68 80 138 205 161 210 169 218 234 312 436 0 2625 (1) 8.50 2.40 1.18 1.56 1.22 2.59 3.05 5.26 7.81 6.13 8.00 6.44 8.30 9.07 11.89 16.61 .00 100.00 (2) 2.46 .75 .37 .49 .38 .8% .95 1,64 2.44 1.92 2.50 2.01 2.60 2.83 3.72 5.19 .00 31.26 (1).PERCDff CF ALL C000 OBSERVATIONS FOR THIS PA0E (2)ePERCDIT OF ALL C00D OBSERVATIONS FOR THIS PERIOD Cs CALM (WIND SPEED LESS THAN CR EQUAL TO .95 MPH)
[
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l N SUP REPORTIDOC A-38 L
TABLE 6F VERMCKF YANKEE JAN 98
- DEC 98 METEOROLOGICAL DATA J0Dff FREQUENCY DISTRIBUTION l 35.0 FT WIND DATA STABILITY CLASS F CLASS FREQUENCY (PERCENTI = 14.79 WIND DIRECTION FROM SPEED N NME NE ENE E ESS SE SSE S SSW SW WSW W WNW NW MM VRSL TMAL HPH CAIJf 0 0 1 1 0 0 0 1 1 0 2 4 0 4 4 1 0 19 I (1)
(2)
.00
.00
.00
.00
.08
.01
.08
.01
.00
.00
.00
.00
.00
.00
.08
.01
.08
.01
.00
.00
.16
.02
.32
.05
.00
.00
.32
.05
.32
.05
.08
.01
.00
.00 1.53
.23 C-3 22 8 11 8 13 15 14 30 43 95 248 201 149 117 96 64 0 1134 (1) 1.77 .54 .89 .64 1.05 1.21 1.13 2.42 3.46 7.65 19.97 16.18 12.00 9.42 7.13 5.15 .00 91.30 (2) .26 .10 .10 .18 .17 .51 1.13 2.95 2.39 1.77 1.39 1.14 .00 13.50 I 4-7 5 0
.13 0 0
.15 0 2 1 36 2 2 8 16 9 4 13 14 76 12 0 88 (1) .40 .00 .00 .00 .00 .14 .08 .16 .16 .64 4.29 72 .22 1.05 1.13 .97 .00 7.09 (2) .06 .00 .00 .00 .00 .02 .01 .02 .02 .10 .19 .11 .05 .15 .17 .14 .00 1.05 I 8-12 til 0
.00
.00 0
.00 0
.00
.00
.00
.00 0
.00 0
.00
.00 0
.00
.00 0
.00
.00 0 0
.00
.00 0
.00
.00 0
.00
.00 0
.00
.00 0
.00
.00
.08
.01 1 0
.00
.00
.00 0 0
.00
.00 1
.08 (2) .00 .00 .00 .01 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 1 (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 1 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 27 8 12 9 13 17 15 33 46 103 266 214 153 135 114 77 0 1242 1
(1) 2.17 .64 .97 .72 1.05 1.37 1.21 2.66 3.70 8.29 21.42 17.23 12.32 10.87 9.18 6.20 .00 100.00 (2) .32 .10 .14 .11 .15 .20 .18 .39 .55 1.23 3.17 2.55 1.82 1,61 1.36 .92 .00 14.79 (1)ePERCENT OF ALL C000 OBSERVA720NS FOR THIS PACE (2) PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD I Co CALM (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) l I
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l 94 5UF REPORTl Dx A-39 r
l TABLE 6G VERMONT YANKEE JAN 98 - DEC 98 METEOROLOGICAL DATA JOINT FREQUENCY DISTRIBUTION 35.0 FT WIND DATA STABILITY CLASS O CLASS FREQUENCY (PERCDrT) a 4.26 WIND CIRECTION FROM SPEED N NNE NE $NE E ESE SE SSE S SSW SW WSW. W WNW NW NNW VRBL TOTAL
{ MPH CALM 0 0 0 0 0 0 0 0 '0 1 0 2 1 0 2 0 0 6 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .28 .00 .56 .28 .00 .56 .00 .00 1.68 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .01 .00 .02 .01 .00 .02 .00 .00 .01 C3 13 9 13 0 7 4 -8 6 17 30 62 54 41 31 17 15 0 327 til 3.63 2.51 3.63 .00 1.96 1.12 2.23 1.68 4.75 8.38 17.32 15.08 11.45 8.44 4.75 4.19 .00 91.34 (2) .15 .11 .15 .00 .08 .05 .10 .07 .20 .36 .74 .64 .49 .37 .20 .38 .00 3.89 47 0 0 0 0 0 1 0 0 1 2 7 3 2 4 4 0 25
-(
1 (1) .00 .00 .00 .00 .00 .28 .00 .00 .28 .56 1.96 .84 .54 1.12 1.12 .28 .00 6.98 (2) .00 .00 .00 .00 .00 .01 .00 .00 .01 .02 .08 .04 .02 .05 .05 .01 .00 .30 4 12 . 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .f' .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 (2) .t s .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 (18 .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 .C0 .00 .00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 CT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) .00 .00 .00 .C0 ,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 13 9 13 0 7 5 8 6 18 33 49 59 44 35 23 16 0 358 (1) 3.63 2.51 3.63 .00 1.96 1.40 2.23 1.68 5.03 9.22 19.27 16.48 12.29 9.78 6.42 4.47 .00 100.00 (2) .15 .11 .15 .00 .08 .06 .30 .07 .21 .39 .82 70 .52 .42 .27 .19 .00 4.26
[.
(11sPERCDl? 0F ALL 000D OBSERVATIONS FOR THIS PAGE (2)sPERCENT OF ALL GOOD 03SERVATIONS FOR TMis PERIOD Ce CALM (WIND SPEED LESS THAN OR EQUAL To .95 MPH)
[
[
[
[-
[
r a scP REP 0an D0c A-40 F
I l
TABLE 6H VEFJtONT YANAEE JAN 98 - DEC 98 METEOR 0LOCICAL DATA J0Dl? FAEQUENCY DISTR 18trr!ON 35.0 FT WIND DATA STABILITY CLASS ALL CLASS FREQUENCY (PERCENT) = 100.00 WIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE SSE S $$W SW WSW W Wd NW Nifd VR8L TOTAL MPM CA!Jf 5 9 4 5 5 4 2 5 6 8 5 11 7 9 9 5 0 99 (1) .06 .11 .05 .06 .06 .05 .02 .06 .07 .10 .06 .13 .08 .11 .11 .06 .00 1.18 I (2!
C-3
.06 248
.11 .05 134 116 115
.04 .06 117
.05 130
.02 .06 156 195
.07 219
.10 294
.06 528
.13 427 373
.08 .11 322
.11 .06 365 429
.00 0
1.18 4168 (1) 2.95 1.60 1.38 1.37 1.39 1.55 1.86 2.32 2.61 3.50 6.29 5.08 4.44 3.83 4.35 5.11 .00 49.63 (2) 2.95 1.60 1.38 1.37 1.39 1.55 1.86 2.32 2.61 3.50 6.29 5.08 4.44 3.83 4.35 5.11 .00 49.63 I 4-7 (1) 388 4.62 1.45 122 50
.60 de
.57 71
.85 107 113 244 338 1.27 1.35 2.91 4.02 1.16 97 75
.89 65
.77 107 141 233 556 1.27 1.68 2.77 6.62 0
.00 2755 32.81 (2) 4.62 1.45 .60 .57 .25 1.27 1.35 2.91 4.02 1.16 .89 .77 1.27 1.68 2.77 6.62 .00 32.81 8-12 213 50 21 11 8 19 3 20 140 49 24 16 59 166 151 218 0 116I 1 til (2) 2.54 2.54
.60
.40
.25
.25
.13
.13
.10
.10
.23
.23
.04
.04
.24
.24 1.67 1.67
.58
.58
.29
.29
.19
.19
.70
.70 1.98 1.80 2.60 1.98 1.80 2.60
.00
.00 13.91 13.91 13-18 20 4 1 0 1 0 0 0 12 4 1 0 9 71 58 15 0 198 (1) .24 .05 .01 .00 .01 .00 .00 .00 .14 .07 .01 .00 .11 .85 .69 .18 .00 2.36 I (2) 19-24
.24 0
.05 0
.01 0
.C0 0
.01 0
.00 0
.00 0
.00 0
.14 0
07 0
.01 0
.00 0
.11 2
.45 4
.69 4
.18 0
.00 0
2.36 10 (1) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .02 .05 .05 .00 .00 .12 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .03 .00 .02 .05 .05 .00 .00 .12 I CT 2 4 (1) 0
.00 0
.00 .00 0
.00 0 0
.00 0
.00 0
.00 .00 0
.00 0 0
.00 0
.00 .00 0 0
.00 .00 0 0
.00 0
.00 0
.00 0
.00 (2) .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 ALL SPEEDS 874 319 192 179 202 260 274 464 715 454 633 519 557 713 820 1223 0 8398 l (1) 10.41 3.80 2.29 2.13 2.41 3.10 3.26 5.53 8.51 5.41 7.54 6.18 6.63 8.49 9.76 14.56 (2) 10.41 3.80 2.29 2.13 2.41 3.10 3.26 5.53 8.51 5.41 7.54 6.18 6.63 8.49 9.76 14.56
.00
.00 100.00 100.00
(),sPERCENT CP ALL GOOD OBSERVATIONS FOR THIS PACE (2)=PERCDff OF *LL COOD OBSERVATIONS FOR THIS PERIOD 1 Co CALM ('.= iPEED LESS THAN CR EOUAL TO .95 MPH) l I
I 3
l .
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I 9:ScPREPoRtiDoC A-41 L
M
1 I
APPENDIX A l
EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SupplementalInformation for 1998 Facility: Vermont Yankee Nuclear Power Station Licensee: Vermont Yankee Nuclear Power Comoration IA. TECHNICAL SPECIFICATION LIMITS - DOSE AND DOSE RATE l
Technical Specification and Category Limit !
l
- a. Noble Gases 3.8.E.1 Total body dose rate 500 mremiyr 3.8.E.1 Skin dose rate 3000 mrem /yr 1 3.8.F.1 Gamma air dose 5 mrad in a quarter i 3.8.F.1 Gamma air dose 10 mrad in a year l 3.8.F.1 Beta air dose 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 j Half-Lives Greater Than 8 Days i 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. Liauids 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 2 A.' TECHNICAL SPECJFICATION LIMITS - CONCENTR ATION Technical Specification and Category Limit
- a. Noble Gases No ECL Limits
- b. Iodine-131. Iodine-133. Tritium and Radionuclides in Particulate Form With Half-Lives Greater Than 8 Days No ECL Limits a seranoan ooc A-1
I I i
I c. Liouids 3.8.A.1 Total fraction of ECL excluding noble gases (10CFR20, Appendix B, Table 2, Column 2): s1.0E+01 3.8.A.1 Total noble gas concentration: s2E-04 Ci/cc
- 3. AVERAGE ENERGY Provided below are the average energy (E) of the radionuclide mixture in releases of fission and activation gases,if applicable.
- a. Average gamma energy: Not Applicable l
- b. Average beta energy: Not Applicable
- 4. MEASUREMENTS AND APPROXIMATIONS OFTOTAL RADIOACTIVITY Provided below are the methods used to measure or approximate the total radioactivity in I effluents and the methods used to determine radionuclide composition.
- a. Fission and Activation Gases Continuous stack monitors monitor the gross Noble Gas radioactivity released from the plant stack. Because release rates are normally below the detection limit of these I monitors, periodic grab samples are taken and analyzed for the gaseous isotopes present. These are used to calculate the individual isotopic releases indicated in Table IB and the totals of Table 1 A. The error involved in these steps may be approximately 23 percent.
I
- b. Todines l Continuous isokinetic samples are drawn from the plant stack through a particulate
't filter and charcoal cartridge. The filters and cartridges are normally removed weekly and are analyzed for Iodine-131,132,133,134, and 135. The error involved in these steps may be approximately 18 percent.
[
I *a sce ntroari me A-2 c
p f
- c. Particulates The particulate filters described in b. above are also counted for particulate radioactivity. The error involved in this sample is also approximately 18 percent.
- d. Tritium f Grab samples from the plant stack are taken monthly through a cold trap collection device and analyzed for tritium. The error involved in this sample is approximately ,
15 percent.
f e. Waste Oil Prior to issuing the permit to burn a drum of radioactively contaminated waste oil,
( one liter of the oilis analyzed by gamma spectroscopy to determine concentrations of radionuclides that meet or exceed the LLD for all of the liquid phase radionuclides listed in Technical Specification Table 4.8.1, Monthly, samples from drums that were issued burn permits are sent to the E-Lab r for compositing and analysis. The E-Lab analyzes for tritium, alpha, Fe-55, Sr-89, I and Sr-90 on the composite sample.
The error involved in this sample is approximately 15 percent.
- f. Liauid Effluents Radioactive liquid effluents released from the facility are continuously monitored.
[ Measurements are also made on a representative sample of each batch of radioactive liquid effluents released. For each batch, station records are retained of the total activity (mci) released, concentration (pCi/ml) of gross radioactivity, volume l (liters), and approximate total quantity of water (liters) used to dilute the liquid effluent prior to release to the Connecticut River.
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.
I
( n ser anoan me A-3 f
i
1
- 5. B ATCH RELEASES
- a. Liauid There were no routine liquid batch releases during the reporting period.
p b. Gaseous There were no routine gaseous batch releases during the reporting period.
The gaseous releases from burning waste oil are treated as either batch or continuous releases based on the total hours of burning in a calendar quarter.
- 6. ABNORM AL RELEASES
- a. Liauid There were no nonroutine liquid releases during the mporting period.
- b. Gaseous There were no nonroutine gaseous releases (measured) during the reporting period.
One event occurred in the second quarter which involved a temporary loss of power to the stack sampling pumps. Vermont Yankee began to pull rods after Refueling I Outage 20 on June 1,1998. On June 8, the reactor reached 100% power. At 0135 on June 9, the reactor scrammed from approximately 65% power. At 0224, the plant lost buses 1,3,6 and 11. The loss of bus 3 caused a power loss to bus 8. Bus 8 supplies I power to the stack sampling pumps. Without the pumps operating, the iodine and particulate filters and the noble gas monitors (scintillatica detectors) are not able to monitor the stack effluent. Although the diesel generators restored power to the l buses within minutes, power was not restored to the stack sampling pumps. The pumps must be manually started. The Control Room notified Chemistry that the pumps were OOS at 0310. The Chemistry logbook indicates that the Control Room l restarted the pumps at 0320. Therefore, between 0224 and 0320, the stack effluent was not monitored by Stack I and Stack II(noble gases, iodines, and particulates).
Stack III, the high range monitor (ionization detector), did remain in service I throughout the entire event. The trend of this monitor did not show any indication of releases between 0014 and 0514 on June 9.
I Indications are that any releases during the unmonitored hour were no more than, and l
l l
l l
l 98 SUP REPORTI DOC A-4 N
probably less than, the rates before the scram. The bounding calculation performed based on conservative assumptions using the stack high range monitor gives assurance that no Technical Specification Limits for dose rates due to noble gases were exceeded.
)
f 4
f a seruan we A-5
g ,, .
[
APPENDIX B LIQUID HOLDUP TANKS l
Reauirement: Technical Specification 3.8.D.1 limits the quantity of radioactive material I 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 f
description of the events leading to this condition is required in the next Annual l Effluent Release Report per Technical Specification 6.7.C.1.
Response: The limits of Technical Specification 3.8.D.1 were not exceeded during this f reporting period.
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<,, _ _ 8.i i-
l APPENDIX C RADIOACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION Reauirement: 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 retumed to operable status I prior to a release pursuant to Note 4 of Table 3.9.1, an explanation in the next Annual Effluent Release Report of the reason (s) for delay in correcting the inoperability are required per Technical Specification 6.7.C.I.
l Response: Since the requirements of Technical Specification Table 3.9.1 governing the operability of radioactive liquid effluent monitoring instrumentation were met for I this reporting period, no response is required.
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I I 98 $UP ltEPOftTI NC C.}
APPENDIX D RADIOACTIVE GASEOUS EFFLUENT MONITORING INSTRUMENTATION Reauirement: Radioactive gaseous effluent monitoring instrumentation channels are required to be operable in accordance with Technical Specification Table 3.9.2. Ifinoperable 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 Annual Effluent Release Report of the reason (s) for the delay in correcting the inoperability is required per Technical Specification 6.7.C.I.
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, no response is required, u sce ntroati ooc D1
l I
APPENDIX E j
RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
[ . Reauirement: The radiological environmental monitoring program is conducted in accordance with Technical Specification 3.9.C. With milk 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 Annual 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 figure (s) and table (s) reflecting the new
( location (s).
Response: No changes were needed in the milk sampling locations specified in Technical
( Specification Table 3.9.3 due to sample unavailability during the reporting year.
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i APPENDIX F LAND USE CENSUS Reauirement: 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 percer.t 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 Annual Effluent Release Report.
Response: The Land Use Census was completed in the third quarter of 1998. No locations yielded a 20 percent greater dose or dose commitment than the values currently being calculated in Technical Specification 4.8.G.I.
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I a nemuoan me F-1
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- ~~
VERMONT YANKEE NUCLEAR POWER CORPORATION PROCESS CONTROL PROGRAM REV 7 Januar.y 26,1998 I
I I -
1 I Submitted y .
RadiationMeetion Manager Approved N M M M 78-876' 7///Eb ~
PORC (Tech. Spec. 6.12(A)(2))
Approved /AWYl m '
PQt B redM
{
Approved . I t ui u NI3N "VP, NYfi.' Spec. 6.12(A)(2))
c -
Verify or obtain current revision from Document Control prior to
[ submitting this document for future revision. (ER 96 255) r u
W
VERMONT YANKEE NUCLEAR POWER CORPORATION I. PROCESS CONTROL PROGRAM
Introduction:
_ Th,e Vermont Yankee Nuclear Power Corporation Process Control Progr.arn (PCP) describes the administrative and technical controls on the radioactive waste systems which provide assurance that Vermont Yankee meets federal shipping and burial site
' requirements.
The PCP complies with Technical Specification 6.12 by describing process parameters, controls, tests, sampling and analysis to ensure compliance with 10 CFR 20,10 CFR I 71, and 10 CFR 61 Energy, 49 CFR 172-173 Transportation, state, and burial site regulation requirements.
1.0 Solidification Vermont Yankee Nuclear Power Corporation does not routinely solidify liquid waste.
i If the use of solidificction to dispose of any liquid waste is required,it will be done by an outside vendor under the vendor's PCP. The vendor PCP will be reviewed and approved by the Plant Health Physicist, the Radiation Protection Manager, PORC and I VP, MOO prior to imp!cmentation. This review is to identify that there is sufficient supporting documentation of the vendor's PCP to give assurance that the final product will meet all requirements for transport and burial, and that sufficient procedural controls exist to assure safe operations. [TS 4.8.N]
2.0 Cartridae Filter Elements Low activity cartridge filter elements (< 200 mR/hr @ 30cm) will be air dried (~ 24hr or as determined by the Radwaste Supervisor) and handled as dry active waste. Filters l determined to be above the dose limitations per 49CFR, will be placed in casks. The l j liner shall be dewatered as applicable and shipped for disposal.
3.0 Resins Normal operations produce radioactive waste in the form of depleted resins. These resins are processed in the burial container using a rapid dowatering system (RDS-I 1000) manufactured by Chem Nucicar Systems, Inc. [OP 2153]
The system has been tested, by Chem. Nuclear, for certification in meeting the Barnwell Site Criteria and disposal requirement for free standing liquid. These tests are I described in Chem-Nuclear's Topical Report on the ROS 1000 Radioactive Waste Dewatering System. In addition, to comply with the statement, "Any liquids present in waste packages shall be non corrosive with respect to the container," Vermont Yankee tested the pH of various resin mixtures used by the plant in solution with
~
water. The range was found to be 4.2 - 8.4. A solution is not considered corrosive if the pH is greater than 4.0 and less than 10.0.
PCP R;v. 7 Page 1 of 4 m
[
A resin sample is taken from each liner prior to shipment. The sample is counted to
[ determine the activity and waste classification. Class A resins that exceed 1.0 yCi/cc of isotopes with greater than 5 year half-lives 'and ai! Class 8 and C resins will be disposed of in an approved High Integrity Container (HIC).
Vendor supplielf or temporary methods of processing resins may be used in lieu of the
_.Ahove process provided that the vendor or temporary process meets the requirements
[, of quality described above and does not conflict with accepted burial criteria or safety requirements. Such methods will be reviewed and approved by the Plant Health Physicist and the Radiation Protection Manager prior to implementation.
[ 4.0 Filter Liners
{- During refueling outages and normal operation, liquid radwaste processing may require use of a decanting filter on the condensate phase separators. A floating suction is used to decant the water and resin into a filter liner. Filtered water is pumped from the
{ liner. The lineris dewatered in accordance with OP 2511 (MOOID9409-03) such that the burial site criterion for free standing wateris met. A resin sample is taken from the liner and analyzed to determine the activity and waste classification.
5.0 Drv Active Waste (DAW)
[ DAW is compacted, as practical, or shipped to a vendor that sorts the material for L
processing or recycling. All DAW is examined before being compacted or shipped.
Any liquids or items found that would compromin the integrity of the package are l removed and separated as specified by procedus. [OP 2512] DAW which includes
[ l compactable, incinerable and metal materials are segregated in the plant and j transported to the applicable sealand container, then shipped to the appropriate / cost l effective off-site processor, if deemed practical, the DAW will be surveyed and free-
! released onsite,if possible. Containers used for DAW shipments meet the criteria of 49 CFR 173.425a. or b. "No leakage of radioactive material," as specified in 49 CFR 173.425.b.1 will be met provided that no radioactive materials in quantities equal to
[ or exceeding those specified in 49 CFR 173.443 are detected on the extemal surfaces of the package at any time during shipment.
( 6.0 Chelstino Acents in order to comply with 10 CFR 20 Appendix F, chelating agents are controlled by the
(- plant chemistry department using procedure AP 0620 and AP 0619.
7.0 Exelosive Waste
' No waste capable of detonation or of explosive decomposition or reaction.will be disposed as per 10 CFR 61.56(a)(4). Refer to MSDS via AP 0620 along with
( AF- 0619.
{
r L PCP Rev.7 Pzes 2 of 4 r
f.
[.
f 8.0 Toxic Waste No waste capable of generating toxic gases, vapors, or fumes will be disposed as per 10 CFR 61.56(a)(5). Refer to MSDS via AP 0620 along with AP 0619.
[
9.0 Pyrochoric Waste No waste that is pyrophoric will be disposed as per 10 CFR 61.56(a)(6). Refer to MSDS via AP 0620.
[ 10.0 Hioh Inteority Containers (HICs)
Vermont Yankee Nuclear Power Corporation has conttacted with various suppliers of f approved HlCs. South Carolina has approved PCPs for HICs used by Vermont Yankee.
Any HIC Vermont Yankee may choose to use at some future timo, will meet all applicable requirements.
11.0 Waste Class Determination Along with an approved outside laboratory, Vermont Yankee periodically pirforms
( laboratory analysis on all waste streams to determine the activity of radionuclides listed in Tables 1 and 2 of 10 CFR 61. Correlation analysis verifies that the relative
[- concentration of each radionuclide, with respect to the overall activity in a given i Vermont Yankee waste stream, remains constant over time. A set of scaling factors is determined which allows the activity of 10 CFR 61 radionuclides to be estimated
[
using the results of gamma spectrometric analysis or direct gamma dose rate t measurements.
r For resin wastes, analysis is performed on samples of each source of resin comprising I the contents of a burial container. Scaling factors are applied to the activity of radionuclides identified by gamma spectrometry analysis to determine the activity of those radionuclides which are not detected in the gamma spectrum.
For DAW, dose rate-to-curie conversion calculations are performed to determine the total activity present in a container. Scaling f actors are applied to the container's total curie content to determine the activity of individua! radionuclides.
Specific procedures for determining 10 CFR 61 scaling factors are contained in OP 2527," Sampling and Analysis for Radwaste Classification." Once the activity of each
[ radionuclide in a burial container is estimated, the waste classification is derived using methods required by 10 CFR 61. Specific procedures for waste class determination are contained in AP 0504, " Shipment of Radioactive Material."
[
12.0 Mixed Waste No mixed waste will be disposed as per 10 CFR 61.56(a)(8) unless properly treated.
PcP r Rev.7
[ . Page 3 of 4
PROCEDURES WHICH IMPLEMENT THE PCP
- ~ ~
- 1. P 0504 Shipment of Radioactive Materials
- 2. tP 2511 Radwaste Cesk/ Liner Handling
- 3. OP 2527 Sampling and Analysis for Radwaste Classification
- 4. OP 2151 Liquid Radwaste
- 5. OP 2153 Solid Radwaste f 6. AP 0620 Chemical Material Use
- 7. OP 2512 Radwaste Drum, Box and Sealand Handling
- 8. AP 0619 Chemical Control / Hazard Communication Program I
I I
I PCP
[ R:v. 7 l Page 4 of 4 -
APPENDIX H OFF-SITE DOSE CALCULATION MANUAL f Reauirement: 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 Annual Radioactive Effluent Release Report for the period in which the change (s) was made effective.
j Response: Revision 22 to the Off-Site Dose Calculation Manual was made during this reporting i period.
The major changes included in Revision 22 to the ODCM are:
j (1) Page i (Cover Page): An additional signature line is included to identify the
" Originator" of the specific revision to the ODCM listed on the cover page.
{ This is an administrative enhancement aimed at providing the name of the individual responsible for preparing the changes for that amendment to the document. This is intended to help others know who to contact if questions concerning the changes were to arise after the revision is implemented.
{ (2) Page 4-1: The ODCM currently gives reference to the " Yankee Atomic Environmental Laboratory" as the contractor providing laboratory sample analyses services to VY for the Radiological Environmental Monitoring
( Program (REMP) implementation. On December 1,1997, Yankee Atomic Electric Company, including the Environmental Laboratory, were acquired by Duke Engineering and Services, Inc. This change in ownership has necessitated editorial updates in the text of the ODCM to correct the name of the laboratory providing these services. These word changes are judged
- editorial in nature since in fact the same laboratory continues to provide the I same contractual support for the VY REMP.
(3) Page 4-la: Based on the 1997 GPS survey of REMP sampling locations with respect to the plant (Reference 1), minor corrections in the listed distances to several air sampling stations were noted. These changes refine the previous j estimates of distance which had been taken from available maps and best visual estimates of the position of plant and various locations in the f
1
( twrmusees sur atrontimoc H-1 r
i
1 environment. The differential GPS measurements made of all REMP l locations generated position coordinates within plus or minus 5 meters l accuracy. Previous listing oflocations in the ODCM were only given to the nearest 100 meters. These changes are taken as technical enhancements to the REMP location information.
(4) Page 4-2 (Table 4.1): Two additional milk sampling locations (TM-22 at 9.73 km WSW, and TM-23 at 6.98 km WNW) are added to the REMP program as I non-Tech Spec required locations. VY Technical Specification Table 3.9.3 requires samples from milking animals in 3 locations within 5 km distance -
I having the highest dose potential be included in the REMP. The current listing of milk sampling programs satisfy this requirement. The expanded milk sampling program created with the two new locations also includes sites I that have high relative potential for observing plant influence and covers two additional sectors. This enhancement goes beyond minimum requirements ar.d improves the ability of milk sampling to be an early indicator of possible plant environmental influence.
(5) Page 4-2a (Table 4.1), and Figure 4-3: As noted before, two additional milk sampling locations (TM-22 at 9.73 km WSW, and TM-23 at 6.98 km WNW) are added to the REMP program as non-Tech Spec required locations. These same locations are also being added to the program as silage collection locations (TC-22 & TC-23) for consistence with how other milk locations are handled. Sus enhancement goes beyond minimum requirements and impre ves the ability of milk and silage sampling to be early indicators of I possiole plant environmental influence.
(6) Pages 4-2,4-2a,4-3 (Table 4.1): As noted in item 3 above, the 1997 GPS I survey of REMP sampling locations (Reference 1) refined the estimate of distance and direction each location represented with respect to the plant.
The listings of distance and direction on Table 4.1 are updated to reflect the I latest survey measurements. No significant errors in the old location information was noted based on the GPS measurements. Also, page 4-3 I (Table 4.1): Footnote 2 is cP.ified by the inclusion of the exception that milk and Filage locations also do not keep with the standard convention of using ,
station numbers 10 tarough 19 as indicator type sites, and 20 through 29 as I controls. This was necessary since all station numbers in the teens had been used in the past for milk sampling locations. The addition of two new milk and silage sites (TM/TC-22 & 23) required that numbers beyond the teens be used. This is seen as an administrative change only.
(7) Page 4-2a,4-3 (Table 4.1): Technical Specification Table 3.9.3 requires that direct radiation (via use of TLD's) be placed in each meteorological sector within a range of 0 to 4 km. Prio'r to the 1997 GPS survey, the site boundary TLD station DR-8 was believed to be in the SW sector, and was designated ,
anun mumua H-2
L
[
as fulfilling this Tech Spec requirement. Reference 1 actually located DR-8 just over the sector line in the SSW sector. In addition, TLD inner ring locations DR-29 and DR-31 were found to be in adjacent sectors to those originally listed. As a result of this shifting of designated sectors, site boundary TLD DR-7 replaces the previously designated location DR-8 as satisfying Technical Specification 3.9.3 for an inner ring TLD in the West sector (footnote 7 on page 4 '3). This change in designation does not phys'ch!!y change the actual location or total number of dosimeters placed in the environment (including both DR-7 & 8 which remain on the plant boundary fence), and as such this revision to the REMP listing is seen only as administrative in nature.
(8) Pages 4-4 through 4-9 (Figures 4-1 through 4-6): The generation of REMP
{ lo.:ation information by the 1997 GPS survey provided fixed coordinates that could be used in a Graphical Information System (GIS) to produce digital site maps of higher quality than previously available. As a result, new environmental sampling location maps are included in this revision to the ODCM. The information shown on the maps reflects the listing of REMP locations on Table 4-1.
In addition, several administrative updates to the text of the VY ODCM are
[ included. Also, Page 4-lb is included because of a font change - there was no change in content to Page 4-lb.
[ No changes have been made to either the dose calculation or setpoint methodologies. It is therefore concluded that these changes will maintain the level of radioactive effluent control required by 10CFR20.1302,40CFR190,
[ 10CFR50.36a, and Appendix 1 to 10CFR Part 50, and not adversely impact the accuracy or reliability of effluent dose or setpoint calculations.
Revision 22 was reviewed by PORC in Mtg 98-076 and approved by the Director of Operations on 7/13/h.
The revised pages from Revision 22 to the ODCM are attached.
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i VERMONT YANKEE NUCLEAR POWER STATION
~ ~~ ~
OFF-SITE DOSE CALCULATION MANUAL REVISION 22 I Originator:
' ~7' I, h?, .) .b,m, [
[ Date Rev1ewed: W. A7. WG (WO 95-O'f(o Plant Operation:; Review ComnMtee
~l/f/96~
Date Approved: /#ddddny ' 7/fo/SJ Plant Ha age Date Approved: g/ ^
r 7 13M DiregJaf ' r Wn'5 Date l
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LIST OF AFFECTED PAGES
-'8 Pace Revision Date 1
22 07/13/98 11 22 07/13/98 111 22 07/13/98 iv y
0 03/01/84 17 05/31/94 vi 18 07/20/95 vii 21 08/14/97 viii 17 05/31/94 ix 18 07/20/95 x 17 05/31/94 1-1 21 08/14/97 1-2 15 07/08/93 1-3 21 08/14/97 1-4 17 05/31/94 1-5 20 07/30/96 1-6 21 08/14/97 1-7 to 1-9 17 05/31/94 1-10 15 07/08/93 1-21 17 05/31/94 1-12 16 ,
10/28/93 1-13 to 1-18 15 07/08/93 1-19 to 1-20 17 05/31/94 ff) 1-21 1-22 15 20 07/08/93 07/30/96 2-1 to 2-2 21 08/14/97 2-3 '
15 07/08/93 2-4 21 08/14/97 3-1 18 07/20/95 3-2 17 05/31/94 3-3 18 07/20/95 3-4 to 3-7 17 05/31/94 3 8 to 3 12 15 07/08/93 3-13 17 05/31/94 3-14 20 07/30/96 3-15 to 3-17 17 05/31/94 3-18 16 10/28/93 3-19 15 07/08/93
{ 3-20 20 07/30/96 3-21 to 3-50 17 05/31/94 3-51 20 07/30/96 .-
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'4-7 22 07/13/98 4-8 22 07/13/98 4-9 22 07/13/98 5-1 15 I 07/08/93 5-2 21 08/14/97 5-3 15 07/08/93 l 5-4 to 5-7 21 08/14/97 5 5-8 to 5-12 18 07/20/95 5-13 to 5-14 20 07/30/96 5-15 I 5 16 5-17 to 5-21 21 18 08/14/97 07/20/95 20 07/30/96 5-22 18 07/20/95 6-1 to 6-8 17 05/31/94 f 6-9 18 07/20/95 6-10 20 07/30/96 R1 17 05/31/94 A-1 to A-2 15 07/08/93 A-3 20 07/30/96 I A-4 A-5 to A-8 17 20 05/31/94 07/30/96 A9 17 05/31/94 I A-10 to A-15 A-16 to A 21 20 17 07/30/96 05/31/94 -
A-22 to A-23 20 07/30/96 i A-24 0-1 to D-3 8-1 to C-39 17 9
05/31/94 03/02/90 16 10/28/93 E-1 to E-8 20 I All F All G 21 07/30/96 08/14/97 ,
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I Revision 22 Date 7/13/98 l
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4.0 ENVIRONMENTAL HONITORING PROGRAM .
i The radiological environmental monitoring stations are listed in Table 4.1. The locations of the stations with respect tc the Vermont Yankee plant are shown on the maps in Figures 4-1 to 4-6.
4.1 Intercomparison Program
(
All routine radiological analyses for environmental samples ar'e performed at the Duke Engineering & Services Environmental Laboratory (DE&S-EL). This was formally the Yankee Atomic Environmenta 1.aboratory. The Laboratory participates in several government and commercial intercomparison quality assurance programs (0APs) that are traceable to the National Institute of Standards and Technology (NIST). These include: Nuclear Energy Institute (NEI)/NIST Measurement Assurance Program for the Nuclear Power Industry: U.S.
Environmental Protection Agency's Intercomparison Program for Drinking Water as available; and Analytics. Inc. (commercial). DE&S-El also participates in f the QAP for environmental media conducted by the Environmental Measurements Laboratory of the U.S. Department of Energy. .
4.2 Airborne Pathway Monitoring
(@ The environmental sampling program is designed to achieve several major objectives. including sampling air in predominant up-valley and down-valley wind directions, and sampling air 'ni nearby communities and at a proper f control location, while maintaining continuity with two years of preoperational data and 18 years of operationci data (as of 1990). The chosen air sampling locations are discussed below.
To assure that an unnecessarily frequent relocation of samplers will not be required due to short-term or annual fluctuations in meteorology. thus -
incurring needless expense and destroying the continuity of the program. long term. site specific ground level 0/0s (five-year averages - 1978 through 1982) were evaluated in comparison to the existing air monitoring locations to determine their adequacy in meeting the above-stated objectives of the program and the intent of the NRC general guidance. The long-term average ,
meteorological data base precludes the need for an annual re-evaluation 'of air sampling lo, cations based on a Single year's meteurological history. yy The Connecticut River Valley in the vicinity of the Vermont Yankee plant has a pronounced up- and down-valley wind flow. Based on five years of me'..eorological data, wind blows into the 3 "up-va'. ley" sectors (N. NNW. and NW) 27 percent of the time, and the 4 "down-valley" sectors (S. SSE. SE. and ESE) 40 percent of the time, for a total *in-valley" time of 67 percent.
Revision 22 Date 7/13/98 l
4-1
Station AP/CF 12 (NNW. 3.6 km) in North Hinsdale. New Hampshire, monitors the up-valley sectors.
({hi It is located in the sector that ranks fourth overall in terms of wind frequency (i.e.. in terms of how often the wind blows into that sector), and is approximately 0.5 miles from the location of the calculated maximum ground level D/0 (i.e.. for any location in any sector, for the entire Vermont Yankee environs). This station provides a second function by its location in that it also monitors North Hinsdale. New Hamoshire. the community with the second h'ghest ground level D/Q for surrounding communities, and it has been in operation since the preoperational period.
The down-valley direction is monitored by two stations - at River Station Number 3.3 (AP/CF-11. SSE. 1.9 km) and at Northfield. Massachusetts (AP/CF 14. SSE. 11.6 km). They both reside in the sector with the maximum l
wind frequency and they bound the down-valley point of calculated maximum ground level D/0 (the second highest overall ground level D/0 for any location in any sector).
Station AP/CF-11 is approximately one mile from this point, between it and the plant. Station AP/CF-14 also serves as a community monitor for Northfield Massachusetts. Both stations have been in operation since the preoperational period.
In addition to the up- and down-valley locations, two communities have gg been chosen for community sampling locations. The four nearest population s- ,
groups with the highest long-term average D/0 values. in decreasing order, are Northfield Massachusetts. North H,insdale. New Hampshire. Brattleboro.
Vermont. and Hinsdale. New Hampshire. The community sampler for Northfield is at Station AP/CF-14 (mentioned above). North Hinsdale is already monitored by the up-valley station (AP/CF-12. NNW. 3.6 km). which also indirectly monitors the city of Brattleboro. located further out in the same sector. The second sampler specifically designated for a community is at Hinsdale Substation (AP/CF-13. E 3.1 km) in Hinsdale.
The control air sampler was loccced at Spofford Lake (AP/CF-21.
NNE. 16.4 km) due to its distance from the plant and the low frequency for l wind blowing in that direction based on the long-term (five-year) meteorological history. Sectors d.n the general west to southwest dir . tion, which would otherwise have been preferable due to lower wind frequencies,,were ,
not chosen since they approached the region surrounding the Yankee Atomic plant in Rowe Massachusetts.
An additional air sampler is ;aaintained at the Tyler Hill site (AP/CF-15. WNW. 3.1 km). which is along the western side of the valley in [
general proximity of historical. dairy opera,tions. (The sixth location is not a specific Technical Specif'. cation requirement.)
Revision 22 Date 7/13/98 l .
4-la
I I l
i 4.3 Distances and Directions to Monitorina Stations It should be noted that the distances and directions for direct radiation monitoring locations in Table 4.1. as well as the sectors shown in i Figures 4.5 and 4.6. are keyed to the center of the Turbine Building due to the critical nature of the Turbine Building to-TLD distance for close-in
~
stations. For simplicity, all other radiological environmental sampling locations use the plagt stack as the origin.
' l
\
l Technical Specification 6.7 and Table 3.9.3. Footnote a. specify that in (
the Annual Radiological Environmental Surveillance Report and ODCH. the !
reactor shall be used as the origin for all distances and directions to sampling locations. Vermont Yankee interprets "the reactor" to mean the 3
l reactor site which includes the plant stack and the Turbine Building. The :
distances to the plant stack and Turbine Building will, therefore, be used in the Annual Radiological Environmental Surveillance Reports and 00CM for the !
sampling and TLD monitoring stations. respectively.
0 l
l i
e Revision 19 Date 11/01/95 4-lb
[
t
, Table 4.1 Radioloaical Environmental Monitorino StationsIII Exposure Pathway Sample location Distance and/or SamDie and Desionated Code (2) (km)(5) Direction (5)
- 1. AIRBORNE (Radiciodine and Particulate)
AP/CF-11 River Station 1.88 SSE No. 3.3 '
AP/CF-12 N. Hinsdalei NH : 3.61 NNW AP/CF-13 Hinsdale Substation 3.05 E AP/CF-14 Northfield. MA 11.61 SSE AP/CF-15 Tyler Hill Road") 3.14 WNW AP/CF-21 Spof ford Lake 16.36 NNE
- 2. WATERBORNE
{
- a. Surface WR-11 River Station 1.88 Downriver
[ No. 3.3 I
WR-21 Rt. 9 Bridge 11.83 Upriver
- b. Ground WG-11 Diant Well 0.24 On-Site WG-12 Vernon Nursing Well 2.13 SSE
- P WG-22 Skibniowsky Well 13.73 N l
{ c. Sediment SE-11 Shoreline Downriver 0.57 SSE From SE-12 North Storm 0.13 E Shoreline Drain Outfall(3)
- 3. INGESTION
{
- a. Hilk(8I TM-11 Miller Farm 0.82 W TM 14 Brown Farm 2.22 S TM 16 Meadow Crest Farm 4.26 NW -
TM-18 Blodgett Farm") 3.60 SE TM 22 Franklin Farm") 9.73 WSW TM 23 Evans Farm") 6.98 WNW TM 24 County Farm 21.64 N
- b. Mixed TG 11 River Station 1.88 SSE Grasses Nc. 3.3 #
f TG-12 N. Hinsdale..NH 3.61 NNW
_- TG 13 Hinsdale Substition 3.05 Er r '
TG 14 Northfield MA 11.61 SSE TG 15 Tyler Hill Rd.") 3.07 WNW TG-21 Spofford Lake 16.16 NNE 6 .
~.
Revision 22 Date 7/13/98 l
42
Table 4.1
() (Continued)
Radiolooical Environmental Honitorino Stations (l)
Exposure Pathway Sample Location Distance and/or Samole and Desionated Code (2) (km)(5) Direction (5)
- c. Silage TC-11 Miller Farm 0.82 W TC-14 Brown Farm 2.22 S ,
TC-16 Headow Crest Farm 4.26 NW TC-18 Blodgett Farm") 3.60 SE TC-22 Franklin Farm") 9.73 WSW TC-23 Evans Farms") 6.98 WNW TC-24 County Farm 21.64 N
- d. Fish FH-11 Vernon Pond (6) (6)
FH-21 Rt. 9 Bridge 11.83 Upriver i
- 4. DIRECT RADIATION DR 1 River Station ,. 1,61 'SSE l
No. 3.3 DR-2 N. Hinsdale. NH 3.88 NNW fh DR-3 Hinsdale Substation 2.98 , E DR-4 Northfield. HA 11.34 SSE DR-5 Spofford Lake 16.53 NNE DR-6 Vernon School 0.52 WSW DR-7 Site Boundary (7) 0.28 W DR-8 Site Boundary 0.25 SSW DR-9 Inner Ring 1.72 N DR-10 Outer Ring 4.49 N DR 11 Inner Ring 1.65 NNE DR 12 Outer Ring 3.58 NNE DR-13 Inner Ring 1.23 NE -
DR-14 Outer Ring 3.88 NE DR-15 Inner Ring 1.46 ENE DR 16 Outer Ring 2.84 ENE DR-17 Inner Ring 1.24 E DR-18 Outer Ring 2.97 E DR-19 Inner Ring 3.65 ESE DR-20. Outer Ring 5.33 ESE' DR-21 Inner Ring 1.82 SE
~
_ DR-22 Outer Ring 3.28 SEr ar -
DR-23 Inner Ring 1.96 SSE DR-24 Outer Ring 3.89 SSE DR-25 Inner Ring 1,91 5
- r -
- Revision 22 Date 7/13/98 l
4 2a
Table 4.1 .
85D (Continued) v Ra,diolootcal a Environmental Honitorino StationsW Exposure Pathway Sample Location Distance and/or Sample and Desionated Codem (km) W DirectionW
~
DR-26 Outer Ring 3.77 S DR-27 Inner Ring 1.10 SSW DR-28 Outer Ring 2.23 SSW DR-29 Inner Ring 0.92 SW DR-30 Outer Ring 2.36 SW DR-31 Inner Ring 0.71 WSW DR-32 Outer Ring 5.09 WSW
.DR 33 Inner Ring 0.66 WNW DR-34 Outer Ring 4.61 W DR-35 Inner Ring 1.30 WNW DR-36 Outer Ring 4.43 WNW DR-37 Inner Ring 2.76 NW DR-38 Outer Ring 7.34 NW DR-39 Inner Ring ,- 3.13 NNW DR-40 Outer Ring 5.05 NNW ;
I (1) Sample locations are shown on Figures 4.1 to 4.6.
(2) Station Nos. 10 through 19 are indicator stations. Station Nos. 20 through 29 are control stations (for all except milk, silage and the l direct radiation stations).
(3) To be sampled and analyzed semiannitally.
(4) Non-Tech Spec station.
F
( (5) Distance and direction from the center of the Turbine Building for direct radiation monitors: from the plant stack for all others.
(6) Fish samples are collected from anywhere in Vernon Pond, which is adjacent to the plant (see Figure 4-1).
l (7) DR-7 satisfies Technical Specification Table 3.9.3 for an inner ring i direct radiation monitoring location. However, it is averaged as a Site Boundary TLD due to its close proximity to the plant.
(8) In accordance with Technical Specification Table 3.9.3. notation a.
samples will be collected on the required schedule as availability of
, milk permits. All deviations from the sample, schedule will be reporte) in the Annual Radiological Environmental Surveillance Report.
Revision 22 Date 7/13/98 l 43
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Figure 4-2 EnvironmentalSampling Locations Within S Km ofPlant Revision 22 Date07/13/98 '4-5
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APPENDIX I RADIOACTIVE LIQUID, GASEOUS, AND SOLID WASTE TREATMENT SYSTEMS Reauirement: Technical Specification 6.14.A requires that licensee initiated major changes to the radioactive waste systems (liquid, gaseous, and solid) be reported to the Commission I in the Annual 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 during this reporting period.
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I APPENDIX J f ON-SITE DISPOSAL OF SEPTIC WASTE AND COOLING TOWER SILT Reauirement: Off-Site Dose Calculational Manual, Appendices B and F requires that the dose
{ impact due to on-site disposal of septic waste and the cooling tower sitt during the reporting year and from previous years be reported to the Commission in the Annual Radioactive Effluent Report if disposals occur during the reporting year. VYNPC
( will report in the Annual Radiological Effluent Release Report a list of the radionuclides present and the total radioactivity associated with the on-site disposal
[ activities at Vermont Yankee.
Response: There was one on-site disposal of septic waste during the reporting year, and one on-( site disposal of cooling tower silt during the reporting year. The total volume of the septage spread was approximately 11,000 gallons. The total volume of cooling tower silt was approximately 1.6UE+05 gallons The total activity spread on the 1.9
( acres (southern) on-si:e disposal field from 1998 spreadings and from previous years was:
Nuclide Activity (Ci)
Mn-54 3.23E-07
{ Co-60 1.13E-05 Zn-65 1.41E 07 Cs-137 6.13E-05
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The projected hypothetical dose from on-site disposals of septic waste and cooling tower silt until and including the year 1998 is 9.13E-2 mrem / year.
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