ML20206H504
| ML20206H504 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 12/31/1998 |
| From: | NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO) |
| To: | |
| Shared Package | |
| ML20206H484 | List: |
| References | |
| NUDOCS 9905110224 | |
| Download: ML20206H504 (55) | |
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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT )
i SupplementalInformation 1998 Facility: Seabrook Station Unit i Licensee: North Atlantic Energy
' Service Corporation
- 1. Regulatory Limits ;
A. Gaseous Effluents
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- a. 5.0 mrad per quarter gamma air dose.
- b. 10.0 mrad per quarter beta air dose.
- c. 7.5 mrem per quarter to any organ, i B. Liquid Emuents i
- a. 1.5 mrem per quarter total body.
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- b. 5.0 mrem per quarter any organ. j
- c. 2.0E-04 pCi/mi dissolved or entrained gas, j J
- 2. Maximum Permissible Concentrations l Provide the MPC's used in determining allowable release rates or concentrations.
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- a. Fission and activation gases: 1 MPC
- c. Particulates, half-lives >8 days: 1 MPC
- d. Liquid Efflu nts: 1 MPC
- 3. Average Energy Not applicable
- 4. Measurements and Approximations of Total Radioactivity Provide the methods used to measure or approximate the total radioactivity in effluents and the methods used to determine radionuclide composition.
A. Fission and activation gases: Determined by gamma spectroscopy. Total error is based on stack )
flow error, analytical error, and calculated sampling error.
B. Iodines: Determined by collection on charcoal with subsequent gamma spectroscopy analysis. .
Total error is based on stack flow error, analytical error, and calculated sampling error. l C. Particulates: Determined by collection on fixed filter with subsequent gamma spectroscopy analysis. Strontium is determined by composite analysis of filters by liquid scintillation, gross alpha by proportional counter and iron 55 by liquid scintillation. Total error is based on stack j flow error, analytical error, and calculated sampling error.
D. Liquid Effluents: Determined by gamma spectroscopy. A composite sample is analyzed for strontium by liquid scintillation, tritium by liquid scintillation, gross a'pha by proportional counter and iron 55 by liquid scintillation. Total error is based on the volume discharge error and analytical error.
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9905110224 990430 PDR ADOCK 05000443 R PDR
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. L4. Measurements and Approximations ofTotal Radioactivity E. - ND: None Detected or No Detectable Activity
' . 5. Batch Releases l
Provide the following information relating to batch releases of radioactive materials in liquid and gaseous effluents A.- uquid l j
- a. ~ Number of batch releases: 118 ,
- b. Total time for batch releases: 24300 minutes
- c. Maximum time period for batch release: 850 minutes j
- d. Average time period for batch release: 204 minutes i
- e. Minimum time period for batch release: 1 minute f
- f. Average stream flow during periods of release of effluents into a flowing stream: j l.59E+06 liters per minuti B. Gaseous
- a. Number of batch releases: 4I
- b. Total time for batch releases: 51616 minutes
- c. Maximum time period for batch release: 5430 minutes
- d. . Average time period for batch release: 1094 minutes I
- c. Minimum time period for batch release: 1 minute l i
- 6. Abnormal Releases
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A. Liquid ,
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- a. Number of releases: 0 t ' b. Total activity released: N/A l I
B. Gaseous )
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- a. Number of releases: I
- b. Total activity released: 2.82 Curies '
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TABLE 1A EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (1998)
GASEOUS-EFFLUENTS-SUMMATION OF ALL RELEASES Unit Quarter Quarter Quarter Quarter Est.
1 2 3' 4 Total Error, t ;
A. Fission and-activation gases
- 1. Total releases C1 2.33E-01 2.04E+00 4.15E-01 3.27E+00 A.70E+01l
- 2. Average release rate pet /sec 3.00E 02 2.60E-01 5.21E-02 4.11E-01 for period
- 3. Percent of applicable t 1.12E-03 2.988-03 3,24E-03 5.66E-02 Technical specification Limit B. Iodines
- 1. Total release Ci ND ND ND ND 1.50E+01l
- 2. Average release rate pci/see NA NA NA NA for period
- 3. Percent of applicable t NA NA NA NA Technical Specification limit C. Particulates
- 1. Total release- Ci ND 2.44E*07 ND 1.33E-06 1.80E+01l
- 2. Average release rate pei/see NA 3.14E-08 NA 1.71E-07 for period
- 3. Percent of applicable t NA 2.20E-01 NA 3.21E-01 Technical specification Limit
- 4. Total alpha radioactivity C1 ND ND ND ND l D. Tritium
- 1. Total release C1 1.8SE+01 1.92E+01 1.64E+01 2.42E+01 1.60E+01l
- 2. Average release rate pci/see 2.38E+00 2.45E+00 2.06E+00 3.04E+00 for period
- 3. Percent of applicable t 2.49E-01 2.20E-01 2.20E-01 3.21E-01 Technical specification limi.t 1'
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4 TABLE IB EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (1998)
GASEOUS EFFLUENTS-ELEVATED RELEASES I CONTINUOUS MODE Nuclides Released Unit Quarter Quarter Quarter Quarter 1 2 3 4
- 1. Fission and activation gases argon-41 Ci ND ND ND 2.01E+00 i krypton-85 Ci ND ND ND ND krypton-85m Ci ND ND ND 3.82E-02 krypton-87 Ci ND ND ND 6.05E-02 krypton-88 Ci ND ND ND 9.07E-02 xenon-131m C1- ND ND ND ND xenon-133 Ci ND 1.61E+00 ND 3.45E-01 xenon-133m Ci ND ND ND ND xenon-135 Ci ND ND ND 2.78E-01 xenon-135m Ci ND ND ND ND xenon-138 Ci ND ND ND ND I unidentified Ci ND ND ND ND Total for period Ci 0.00E+00 1.61E+00 0.00E+00 2.82E+00 1
- 2. Iodines iodine-131 C1 ND ND ND ND iodine-133 Ci ND ND ND ND iodine-135 Ci ND ND ND ND Total for period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00
- 3. Particulate l strontium-89 Ci ND ND ND ND strontium-90 Ci ND ND ND ND cesium-134 Ci ND ND ND ND cesium-137 Ci ND ND ND ND barium-lanthanum-140 Ci ND ND ND ND cobalt-58 Ci ND ND ND 1.33E-06 cobalt-60 Ci ND ND ND ND
- -as 'm- 51 C1 ND ND ND ND i . e.ase-54 Ci ND ND ND ND taooium-95 Ci ND ND ND ND iron-59 Ci ND ND ND ND unidentified Ci ND ND ND ND Total for period Ci 0.00E+00 0.00E+00 0.00E+00 1.33E-06
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s TABLE 1B EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (1998)
GASEOUS EFFLUENTS-ELEVATED RELEASES BATCH MoDT" Nuclides Released Unit Quarter Quarter Quarter Quarter 1 2 3 4
- 1. Fission and activation gases argon-41 Ci 3.14E-02 2.87E-02 1.61E-01 6.82E-02 krypton-85 Ci ND ND ND 5.36E-02 krypton-85m Ci ND ND ND ND krypton-87 Ci ND ND ND ND krypton-88 Ci ND ND ND ND xenon-131m Ci ND ND ND ND xenon-133 Ci 2.62E-03 2.34E-03 2.85E-02 2.09E-03 xenon-133m C1 1.36E-01 3.35E-01 2.25E-01 3.20E-01 xenon-135 Ci ND ND ND ND xenon-135m Ci ND ND ND ND xenon-138 Ci ND ND ND ND unidentified Ci ND ND ND ND Total for period C1 1. 7 0E- 01 3.66E-01 4.15E-01 4.44E-01
- 2. Iodines iodine-131 Ci ND ND ND ND iodine-133 Ci ND ND ND ND Iodine-135 Ci ND ND ND ND Total for period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00
- 3. Particulates strontium-89 Ci ND ND ND ND strontium-90 Ci ND ND ND ND cesium-134 Ci ND ND ND ND cesium-137 Ci ND ND ND ND barium-lanthanum-140 Ci ND ND ND ND unidentified Ci ND ND ND ND Total for period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 L _ - - _ - - - .- -
s' TABLE 1C EFFLUENT AND NASTE DISPOSAL ANNUAL REPORT (1998)
GASEOUS EFFLUENTS-GROUND LEVEL RELEASES CONTINUOUS NODE Nuclides Released Unit Quarter Quarter Quarter Quarter 1 2 3 4 l
- 1. Fission and activation gases argon-41 Ci ND ND ND ND krypton-85 Ci ND ND ND ND j krypton-85m Ci ND ND ND ND krypton-87 Ci ND ND ND ND krypton-88 Ci ND ND ND ND xenon-133 Ci 6.30E-02 6.40E-02 ND ND xenon-135 Ci ND ND MD hT xenon-135m Ci ND ND ND ND xenon-138 Ci ND ND ND ND C1 Ci Unidentified Ci ND ND ND ND Total for period Ci 6.30E-02 6.40E-02 0.00E+00 0.00E+00
- 2. Iodines iodine-131 Ci ND ND ND ND iodine-133 Ci ND ND ND ND Ci Total for period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 l
- 3. Particulates strontium-89 Ci ND ND ND ND strontium-90 C1 ND ND ND ND cesium-134 Ci ND ND ND ND cesium-136 Ci ND ND ND ND cesium-137 Ci ND ND ND ND barium-lanthanum-140 Ci ND ND ND ND cobalt-58 C1 ND ND ND ND Cobalt-60 Ci ND ND ND ND Ci Unidentified Ci ND ND 10 ND Total for period Ci 0.00E+00 0.00E+00 0.00E+00 0.00E+00 l
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i TABLE 1C EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (1998)
GASEOUS EFFLUENTS-GROUND LEVEL RELEASES BATCH NODE Nuclides Released Unit Quarter Quarter Quarter Quarter 1 2 3 4
- 1. Fission and activation gases argon-41 Ci ND ND ND ND krypton-85 Ci ND ND ND ND j krypton-85m Ci ND ND ND ND krypton-87 Ci ND ND ND ND l krypton-88 Ci ND ND ND ND xenon-131m Ci ND ND ND ND xenon-133m Ci ND ND ND ND xenon-133 Ci ND 5.21E-04 ND ND j xenon-135 Ci ND ND hT ND xenon-135m Ci ND ND ND ND xenon-138 Ci ND ND ND ND Ci unidentified Ci ND ND ND ND Total for period Ci 0.00E+00 5.21E-04 0.00E+00 0.00E+00
- 2. Iodines iodine-131 Ci ND ND ND ND iodine-132 Ci ND ND ND ND.
iodine-133 Ci ND ND ND ND l
iodine-135 Ci JD ND ND ND I
Total for period Ci 0.063+00 0.00E+00 0.00E+00 0.00E+00
- 3. Particulates strontium-89 Ci N'1 ND ND ND strontium-90 Ci ND ND ND ND cesium-134 Ci ND ND ND ND cesium-136 Ci ND ND ND ND cesium-137 Ci ND 2.48E-13 ND ND barium-lanthanum-140 Ci ND ND ND ND cobalt-57 Ci ND ND ND ND cobalt-58 Ci ND ND ND ND cobalt-60 Ci ND 1.50E-08 ND ND manganese-54 Ci ND ND ND ND iron-59 Ci ND 2.29E-07 ND ND niobium / zirconium-95 Ci ND ND ND ND chromium-51 Ci ND ND ND ND technetium-99m Ci ND ND ND ND bromine-82 Ci ND ND ND ND unidentified Ci ND ND ND ND Total for period Ci 0.00E+00 2.44E-07 0.00E+00 0.00E+00
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. EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (1998) )
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LIQUID EFFLUENTS-SUMMATION OF ALL RELEASES Unit Quarter 1 Quarter 2 Quartar 3 Quarter 4 Est.
Total .
Error, t j A. Fission and activation products' I
- 1. Total releases Ci 3.12E-02 9.356-03 2.43E-02 1.69E-02 6.00E+00
- 2. Average diluted concentration pCi/ml 1.63E-10 4.725-11 1.068-10 6.99E-11 during period
- 3. Percent of applicable limit % 1.93E-02 1.000-02 3.18E-02 2.42E-02
- 3. Tritium
- 1. Total release C1 6 14E+01 3.95E+01 4.92E+02 4.15E+02 8.00E+00
- 2. Average diluted concentration mci /ml 3.22E-07 1.99E-07 2.16E-06 1.72E-06 during period
- 3. Percent of applicable limit t 1.93E-02 1.00E-02 3.18E-02 2.42E-02 C. Dissolved and entrained gases
- 1. Total release C1 ND 1.90E-02 ND ND 1.90d+01
- 2. Average diluted concentration pCi/mi NA 9.58E-11 NA NA during period
- 3. Percent of applicable limit % NA 4.79E-05 NA NA D. Gross alpt.a radioactivity
- 1. Total release C1 ND ND ND ND 1.00E+01 R. Volume of weste liters 3.17E+07 1.69E+07 2.08E+07 2.565+07 1.30E+00 released (prior to dilution)
F. Volume of dilution liters 1.91E+11 1.98E+11 2.20E+11 2.42E+11 9.00E+00 water used during period I
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TABLE 2B EFFLUENT AND WASTE DISPOSAL AN'UALN REPORT (1998)
' LIQUID EFFLUENTS CONTINUOUS NODE Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 strontium-89 Ci ND ND ND ND Strontium-90 Ci ND ND ND ND cesium-134 Ci 1.89E-06 1.08E-06 3.50E-07 1.62E-05 cesium-137 Ci 1.91E-06 ?. 36E-06 1.65E-06 2.42E-05 iodine-131 Ci ND ND ND ND iodine-133 Ci ND ND ND ND cobalt-58 Ci ND 7.50E-07 1.21E-06 ND cobalt-60. Ci ND ND 2.11E-07 5.22E-07 iron-59 Ci ND ND ND ND zinc-65 Ci ND ND ND ND manganese-54 Ci ND ND ND ND chromium-51 Ci ND ND ND ND zirconium-niobium-95 Ci ND ND ND ND j molybdenum-99 Ci ND ND ND ND technetium-99m Ci ND ND ND ND barium-lanthanum-140 Ci ND ND ND ND cerium-141 Ci ND ND ND ND Ci
[ unidentified Ci ND ND ND ND l'
l l Total for period (above)l Ci l 3.80E-06 l 3.19E-06 l 3.42E-06 l 4.09E-05 l I
xenon-131m Ci ND 2.47E-04 ND ND I xenon-133m Ci ND 7.88E-05 ND ND xenon-133 Ci ND 1.85E-02 ND ND l xenon-135 Ci ND 1.44E-04 ND ND I
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e TABLE 2B l EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT (1998)
LIQUID EFFLUENTS j BATCH MODE Nuclides Released Unit Quarter 1 Quarter 2 Quarter 3 Quarter 4 strontium Ci ND ND ND ND l strontium-90 Ci ND ND ND ND desium-134 Ci ND 2.61E-06 4.56E-05 4.82E-06 cesium-137 Ci ND 9.59E-06 1.03E-04 2.91E-05 iodine-131 Ci ND ND ND 1.13E-05 iodine-133 Ci 8.81E-06 ND ND ND cobalt-57 Ci ND ND 5.37E 1.48E-06 cobalt-58 Ci 1.01E-03 7.08E-04 1.67E-03 9.35E-04 cobalt-60 Ci 1.39E-03 5.11E-04 1.13E-03 1.81E-03 chromium-51 Ci 3.75E-04 ND ND ND iron-55 C1 1.75E-03 3.83E-03 1.82E-02 1.03E-02 iron-59 Ci ND ND ND ND zinc-65 Ci ND ND ND ND manganese-54 Ci 5.50E-05 1.57E-05 2.73E-04 6.09E-05 zirconium-niobium-95 Ci ND ND ND ND molybdenum-99 Ci ND ND ND ND technetium-99m Ci ND ND ND ND J barium-lanthanum-140 Ci ND ND ND ND cerium-141 Ci ND ND ND 10 antimony-124 Ci 6.07E-04 1.26E-05 ND ND antimony-125 C1 2.60E-02 4.26E-03 2.34E-03 3.71E-03 niobium-97 Ci ND ND ND ND tin-117m Ci ND ND ND 4.80E-06 sodium-24 Ci ND ND ND ND Ci unidentified Ci ND ND ND ND l Total for period (above) l Ci l 3.12E-02 l 9.35E-03 l 2.43E-02 l 1.69E-02 l xenon-133 Ci ND ND ND ND xenon-135 C1 ND ND ND ND l I
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TABLE 3 EFFLUENT.AND WASTE DISPOSAL ANNUAL REPORT 1998 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS A. SOLID WASTE SillPPED OFFSITE FOR BURIAL OR DISPOSAL (Not Irradiated Fuel)
- 1. Type of waste (no shipment made) Unit Est. total error %
- a. Spent resins, filter sludges, evaporator 0 m' 0E bottoms, etc. O Ci
- b. Dry compressible waste, contaminated equip., etc. O m' 0E 0 Ci
- c. Irradiated components, control rods, etc.
O m' OE O Ci
- d. Other (describe) 4.724 E+00 m' 2.88 E+01 Dewatered Cartridge Filters 8.447 E+01 Ci
- 2. Estimate of major nuclide composition (by type of waste)
Nuclide % Ci a.
FE-55 7.66E+01 6.47E+01
- 3. Solid Waste Disposition Number of shipments Mode of Transportation Destination 2 Flatbed Truck Chem Nuclear- Barnwell, S.C.
B. IRRADIATED FUEL SHIPMENTS (Disposition)
Number of Shipments Mode of Transportation Destination 0 NA NA
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LIST OF APPENDICES Appendix Title A Offsite Dose Calculation Manual B Process Control Program C Radioactive Liquid Efnuent Monitoring Instrumentation D Radioactive Gaseous Emuent Monitoring Instrumentation E Liquid Holdup Tanb F Radwaste Treatment Systems G Unplanned Releases
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. Appendix A Offsite Dose Calculation Manual Requirement:
Technical Specification 6.13.2.b 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 changes were made effective. included in these changes are changes to the Radiological Environmental Monitoring Program (REMP) in accordance with Technical Specifications 3.12.1 and 3.12.2.
Response
During 1998, the overall management and administrative control for Seabrook Station's REMP was transferred from the Environmental Compliance Manual to the Radiation Protection Manual. This change was made to ensure that the administrative procedures for the REMP were under the same oversight and controls as the REMP implementing procedures.
No other effective changes were made to the REMP in 1998. For this period, the REMP was conducted as specified in the ODCM. The Land Use Census for 1998 had some minor changes as Global Positioning technology was used to more accurately locate offsite sampling and monitoring locations and verify with greater accuracy residences and gardens as to distance and sector from containment.
North Atlantic has submitted License Amendment Report 97-08 to relocate certain parts of radiological effluent monitoring requirements from the Technical Specifications into the ODCM. This was performed under the guidance of Generic Letter 89-01. Upon NRC's issuance of the License Amendment, the ODCM will be revised.
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i Appendix B Process Control Program Requirement:
Technical Specification 6.12.2.a requires that licensee initiated changes to the Process Control Program
, - (PCP) be submitted to the Comrr.ission in the Annual Radioactive Effluent Release Report for the period
! in which the changes were made.
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Response
The PCP was revised to include the North Atlantic responses to NRC's inspector Follow-up Items (IFI):
- IFl 97-07-04, increase scope of PCP
- IFI 97-07-05, additional information to be added to Health Physics Study / Technical Information Document (HPSTID)
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l In December'1997, the NRC completed an inspection of solid radioactive waste program at Seabrook 1 Station and reviewed revision I of the Seabrook Station's PCP, The inspectors noted that the PCP -
documen! addressed the dewatering of depleted bead resin and process cartridge filters and a natural drying process for process cartridge filters, but it did not contain or reference information covering all l' aspects of radioactive waste disposal. To increase the scope of PCP to reflect current practices, the PCP document was updated and SORC approved to provide 'more complete information describing or j- _ referencing the waste processing and packing methods used, the applicable regulatory requirements, and
! the burial ground requirements. The inspectors also noted that a study (HPSTID 96-015," Natural Drying ,
Time Evaluation for Saturated Process Filters") was used to justify a change to the PCP to include a natural air drying option but needed a clearer description of the rationale supporting this change to the j PCP. HPSTID 96-015 was replaced with HPSTID 98-001 to provide a clear cationale.
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. .. implementation of these changes did not reduce the overall conformance of the solidified waste product to existing criteria for solid wastes. IFI 97-07-04 and 05 were closed out by the NRC in Inspection Report 50-443/98-05.
During 1998, the revised PCP was put into the Seabrook Station Radiation Protection Manual as Appendix C.
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_ APPENDIX C: PROCESS CONTROL PROGRAM I. PURPOSE L The purpose of Seabrook Station's Process Control Program (PCP) is to describe the policies and programatic controls for the processing and acceptance criteria for radioactive waste forms that must meet the Nuclear Regulatory Commission (NRC) regulations and disposal site license requirements involving waste form structural stability and free-standing water limitations. As a minimum, these -
regulatory requirements are 10 CFR 61.56(a)(3)&(b) and the appropriate disposal site license requirements.
II. WASTE CLASSIFICATION The Seabrook Station PCP ensures that wastes determined acceptable for near surface disposal are i properly classified to meet the waste characteristic requirements identified in 10 CFR 61.56(a) _
(Reference 5.1). _ Waste classification is performed consistent with the guidance provided in the NRC l Branch Technical Position on Waste Form. The methods utilized by Seabrook Station and the frequency for determining the radionuclide concentration for the final waste form are conducted in accordance with the Chemistry Manual, procedure CP 5.1, " Isotopic Characterization of Radwaste" (Reference 5.2).
This procedure is used in determining the isotopic concentrations and/or distributions of various waste l
types.
- Seabrook Station generates Dry Active Waste (s) (DAW) which consists of solid or radioactively
( contaminated material generated during plant operations and/or maintenance. This waste form is categorized as Class A - Unstable. This waste form (DAW) will be classified, packaged and shipped in accordance with the Radwaste Department Instruction RW-14, " Shipment of Radioactive Material."
i This instruction will ensure that all applicable Federal (10 CFR 61.56(a),10 CFR 20 and 10 CFR 71),
State, and burial ground requirements are met.
Presently, the only waste forms that need to be processed in accordance with the requirements of the BTP and the stability requirements of 10 CFR 61.56(b) are depleted resins and spent process filters.
i The Radwaste Department, using procedure (Reference 5.3), " Operating Procedure for Radman Software," and/or Radwaste Instruction 14, Shipment of Radioactive Material (Reference 5.4), will determine the isotopic loading of the final waste form, decay corrections, dose to curie conversions and average gamma energy calculations.
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C-1 SSRP Rev. 28 e
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III. WASTE PROCESS DEWATERING USING THE " PUMP-AND-WAIT" DEWATERING METHOD AS ORIGINALLY DEVELOPED BY CHEM-NUCLEAR SYSTEMS INC.
1.0 GENERAL DESCRIPTION This section discusses the qualified waste, qualified equipment, procedures, and the acceptance criteria for dewatering radioactive waste using the " Pump and Wait" dewatering method as originally developed by Chem-Nuclear Systems,Inc. (CNSI). The Seabrook Station PCP is based on the NRC Branch Technical Position (BTP) on waste form. The BTP ensures waste forms requiring stability consistently meet the requirements found in 10 CFR 61. The BTP applies only to waste forms where stability is required such as Class A - Stable, Class B, and Class C wastes. Presently, the only waste forms that need to be processed according to the guidelines outlined in this PCP are depleted bead resin and process cartridge filters. In general, wastes are loaded into an appropriate liner and dewatered by pumping out any excess water followed by an eight-hour waiting period. The cycle is repeated until the appropriate number of dewatering cycles has been completed and the amount of water removed is below the value specifiedin 4.0, Acceptance Criteria.
2.0 PROCESS DESCRIPTION 2.1 Spent Resins 2.1.1 Spent bead resins and activated charcoal are obtained from various letdown purification ion exchange systems, the spent fuel pool demineralizer and the waste liquid demineralization systems.
! 2.1.2 Seabrook Station will utilize the CNSI dewatering procedure for any required dewatering
~of spent bead resin or activated charcoal. This procedure is based on the CNSI Topical Report (DW-11118-01-NP-A) for process dewatering (Reference 5.5). The NRC reviewed and approved this document on June 11,1985. The acceptance criteria states that wastes containing liquid must be converted into a form that contains as little freestanding and noncorrosive liquid as reasonably achievable, but in no case shall the liquid exceed 1% of the volume of the waste in a disposal container designed to ensure stability, or 0.5% of the volume of the waste for wastes processed to a stable form l
(Reference 5.6).
2.1.3 The CNSI dewatering procedure (Reference 5.7) is a Radwaste Department Procedure:
Bead Resin / Activated Carbon Dewatering Procedure for CNSI 14-215 or Smaller Liners (Reference 5.8). The instructions contained in this procedure apply to dewatering CNSI's14-215 or smaller liners containing bead type ion-exchange media or granular activated carbon with a particle size greater than or equal to GAC 40, with less than 1% oil content.
- The dewatering process will utilize an air-driven positive displacement pump to obtain a continuous suction on the specified waste container. This process will remove any pumpable liquid to a predetermined end point. The cycle is repeated until the appropriate number of dewatering cycles is completed and the amount of water removed is below that set forth in the applicable criteria as stated in Section 2.1.2 abcve.
2.1.4 Water removed from each waste container will then be returned to plant systems for further processing, if necessary.
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'2.1.5 The CNSI High Integrity Containers (HICs) that are used for wet layup resin storage will
!t ' also be used in bead resin / charcoal dewatering. All dewatering procedures for ion
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exchange media or granular activated carbon are applicable for CNSI 14-215 or smaller
( liners.
2.2 Process Filters 2.2.1 Spent process filters originate from plant purification systems, waste cleanup systems, l spent fuel pool cooling system, and various types of decontamination equipment. ,
.. 1 2.2.2 - The respective systems that process filters originate from are allowed to drain prior to l filter removal, thereby minimizing the amount of excess water transferred to the storage l HIC.
2.2.3 Seabrook Station will ensure spent process filters sent off site for waste burial will meet i all applicable requirements regarding freestanding water in the final waste form. The acceptance criteria are the same as stated in Section 2.1.2 above (Reference 5.6).
2.2.4 Seabrook Station will utilize Radwaste Departmem Procedure,"CNSI Work Instruction ,
for Verification of No Freestanding Water in a Filter HIC at Seabrook Station" -
! (Reference 5.9) to ensure compliance with Section 2.2.3.
l 2.2.5 If exposure levels and/or conditions preclude the use of this instruction, Seabrook Station l will utilize Health Physics Studyffechnical Information Document (HPSTID) 98-01,
" Updated Natural Drying Times for Saturated Process Filters." These studies evaluated
[ the natural drying times for the three most common process filter types at Seabrook l . Station. (Protected: Ref. 5.11)
' 2.3 - Procedures and Equipment f 2.3.1 Station procedures must be consistent with applicable UFSAR and vendor operating procedures.
2.3.2 Dewatering equipment shall meet the requirements of Reference 5.5.~ Equivalent sub".itutions may be made with the ' approval of the Waste Services Department Manager.
( 2.3.3 Waste containers shall meet the requirements of Reference 5.5 and the associated liner's procedure.
l 2.3.4 ' Prior to making significant modifications to the CNSI-provided dewatering equipment, waste containers, or operating procedures, CNSI shall verify in writing that such modifications are consistent with References 5.1,5.5,5.7, and 5.8 as applicable.
3.0- QUALIFIED WASTES 3.1 All bead resins and charcoals that are recommended and approved by CNSI and are designated as Advanced Liquid Processing System (ALPS) media are acceptable for dewatering.
3.2 Other polystyrene-based bead resins are acceptable for dewatering as long as they meet the procurement resin requirements as stated in the Procurement Clause Reference for nuclear grade resins (Reference 5.10).
hp ANE } I. y J C-3 SSRP Rev.28 b bO L
3.3 In addition, all bead resins that qualify for dewatering shall also meet the criteria for oil, grease
- and contaminant levels established in the Radwaste Department Procedure for bead resin dewatering (Reference 5.8). ,
- 3.4 Physical degradation of the de vatered media shall be limited to that due to the dewatering process, resin transfer operations, and through normal use. !
3.5 Cartridge process filters will be dried and may be disposed of as Dry Active Waste (DAW).
Filters that do not meet the exposure limits for DAW will be placed in High Integrity Containers (HICs) liners for disposal.
3.6 Waste containers used to meet stability requirements shall meet the requirements of the CNSI Topical Report DW-1118-01-NP-A (Reference 5.2).
4.0 - ACCEPTANCE CRITERIA 4.1 All waste streams that undergo dewatering operations shall meet applicable acceptance criteria as defined in the appropriate Radwaste Department Procedure.
- 4.2 The Waste Services Department Manager shall determine if the radwaste procedure acceptance criteria have been met.
4.3 Radwaste supervisory personnel shall determine if the following steps shall be performed after satisfying the Acceptance Criteria in the Radwaste procedure. Wait at least eight hours before performing the following dewatering check:
4.3.1 . Using the secondary dewatering line, less tnan one quart of water shall be obtained while dewatering the container for at least one hour.
4.3.2 If a secondary dewatering line is not available, the primary dewatering line shall be used to verify that less than one quart of water is obtained in at least one hour. When using the primary dewatering line for the final dewatering check, the installed suction gauge shall register less than 10" of Hg to ensure that filter blinding has not occurred. (See Reference 5.9.)
5.0 REFERENCES
5.I ' USNRC Branch Technical Position on Waste Form. Rev 2. January 1991.
5.2 Chemistry Manual, procedure CP 5.1, Isotopic Characterization of Radwaste (Rev.15)
September 24,1996.
5.3 Radwaste Department Procedure WN0598.55, Operating Procedure for Radman Software (Rev.1) May 24,1996.
5.4 Radwaste Department Instruction 14, Shioment of Radioactive Material (Rev. 4) November 14, 1997.
~ 5.5 CNSI Topical Report (DW-11118-01-NP-A) CNSI Dewatering Control Process Containers Topical Reoort. June 11,1985. ,
i r- , a n- 7 y fI j SSRP Rev.28 T
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5.6 ~ USNRC 10 CFR 61.56, Licensing Reauirements for Land Disposal of Radioactive Wastes.1997.
5.7 GNSI Dewaterinig Procedure for CNSI 24-Inch Diameter Pressure Vessels. July 11,1984.
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5.8 Radwaste Department Procedure, Bead Resin / Activated Carbon Dewatering Procedure for CNSI 14-215 or smaller liners. (Rev.1) June 12,1996.
5.9 Radwaste Depanment Procedure, CNSI Work Instruction for Verification of No Freestanding Water in a Filter HIC at Seabrook Station. December 13,1995.
5.10 Procurement Clause Reference (PCRE), Revision 19. April 9,1997.
5.11 NRC Integrated Inspection Report No. 50-443/97-07 (IFISO/443/97-07-05).
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. Appendix C Radioactive Liquid Effluent Monitoring Instrumentation Requirement: Radioactive Liquid Effluent Monitoring Instrumentation channels are required to be operable in accordance with Technical Specification 3.3.3.9.b. With less than the minimum number of channels operable for 30 days, Technical Specification 3.3.3 9.b requires an explanation for the delay in
? correcting the inoperability in the next Annual Radiological Effluent Release Report in accordance with Technical Specification 6.8.1.4.
Response
A review of the Action Statement Status tracking system for the period from January 1,1998 to December 31, 1998 indicated Technical Specification 3.3.3.9 was not entered for more than 30 consecutive days.
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. Appendix D Radioactive Gaseous Effluent Monitoring Instrumentation Requirement: Radioactive Gaseous Effluent Monitoring Instrumentation Channels are required to be i operable in accordance with Technical Specification 3.3.3.10.b. With less than the minimum number of ch:cmels operable for 30 days, Technical Specification 3.3.3.10.b requires an explanation for the delay in correcting the inoperability in the next Annual Radioactive Effluent Release Report in accordance with Technical Specification 6.8.1.4.
Response
A review of the Ac' ion Statement Status tracking system for the period from January 1,1998 to December 31, 1998 indicated Technical Specification 3.3.3.10 was not entered for more than 30 consecutive days. Waste gas oxygen (WG O2) analyzer WG-AE-1629, however, was out of service from February 14,1998, until a new design change (DCR 98-008) was implemented on January 8,1999.
In accordance with Technical Specification 3.3.1.10, the LCO is entered if the number of operable radioactive gaseous effluent monitoring instrumentation channels is less than the minimum. The :
minimum channel operable requirement was satisfied by the second WG O2 analyzer, WG AE-1725. I Whenever WG-AE-1725 was taken out of service for maintenance (less Qan 30 days), compensatory actions were taken in accordance with Technical Specification 3.3.3.10, Table 3.3-13 item 1, Action 34, as the minimum channel requirement of having one gaseous effluent monitoring operable was not maintained.
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. Appendix E Liquid Holdup Tanks l Requirement: Technical Specification 3.11.1.4 limits the quantity of radioective material contained in i any outside temporary tank. With the quantity of radioactive material in any outside temporary tank j exceeding the limits of Technical Specification 3.11.1.4, a description of the events leading to this condition is required in the next Annual Radiological Effluent Release Report in accordance with Technical Specification 3.11.1.4.
Response: No report required.
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. Appendix F I
Radwaste Treatment Systems Requirement: Technical Specification 6.14.1.a requires that licensee initiated changes to the Radwaste )
Treatment Systems (liquid, gaseous and solid) be submitted to the Commission in the Annual Radioactive l Effluent Release Report for the period in which the change was made.
Response: A design change (DCR 98-008) was performed in 1998 for the replacement of waste gas oxygen (WG O2) monitoring sensors 1-WG-AE-1629 ar.d 1-WG-AE-1725. The WG O2 monitors, which were provided by Teledyne as part of the original plant design, were replaced with those provided by Orbisphere and relocated to a more accessible area for easy on-line service and calibration.
The waste gaseous system provides sufficient processing so that radioactive gaseous effluents are discharged to the environment at concentrations below the regulatory limits. Dual 0 2analyzers are provided to monitor the oxygen content in the effluent to ensure that explosive mixtures of112 and O2 are not present. The original locations of WG O 2sensors posed potential ALARA, safety, and maintenance issues. These 0 2analyzers are required to support Technical Specification requirements for radioactive gaseous effluent monitoring.
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O Appendix G Unplanned Releases Requirement: Technical Specification 6.8.1.4 requires a list and description of unplanned releases from the site to UNRESTRICTED AREAS of radioactive materials in gaseous and liquid efuuents made during the reporting pericxi.
Response: The Borated Waste Storage Tank (BWST) room became a noble gas airborne area during power ascension following criticality on December 24,1998. Concentrations of gas in the room reached a maximum of 12 DAC. This occurred while transferring reactor coolant from the Primary Drain Tank (PDT) through the PDT degasifier to the BWST.
On December 22,1998, the unit tripped due to an electrical breaker problem in the switchyard. The unit was being brought back to power when the BWST room became a radiological airborne activity area. At l
the time of this event, operators were borating the reactor coolant system to compensate for xenon decay, and the boron concentration in the coolant reached 955 parts per million when the reactor became critical.
To support power escalation of 5% per hour, the coolant was diluted to change boron concentration from 955 parts per million on December 24,1998 to 453 parts per million on December 26,1998. The dilution involved letdown of approximately 48,000 gallons of water from PDT to the PDT degasifier.
The degasifier functions to remove radioactive gases from the water and sends them to the waste gas system. The dilution changed the waste gas dryers outlet pressure from approximately 2 psig to 3.96 psig and increased the vent gas header pressure to approximately 8.93 psig. High pressure in the waste gas system decreases the efficiency of the degasifer, thereby, increasing the gas loading in the BWST. Both the Wide Range Gas Monitor (WRGM) and the Waste Processing Building radiation monitors showed an -
increase in radioactive concentration during the coolant dilution. Gases not removed by the degasifier were then sent to the BWST and vented from the tank through the overflow. Gases were not processed through the normal design pathway from the aerated vent header. Therefore, gases were released to the BWST rooms and made their way to the plant stack through the normal ventilation pathway as indicated by the. Waste Processing Building radiation monitor and the WRGM.
The releases from the plant vent were minimal. The release dose values were approximately a factor of 100 below the monthly Technical Specification limits.
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ENCLOSURE 2 TO NYN-99048 l
l Joint Frequency Distributions of Wind Speed, )
Wind Direction and Atmospheric Stability I
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l' SEABROOK JAN98-DEC98 MET DATA JOINT FREQUENCY DISTRIBUTION (210-FCOT TOWER) 43.0 FT WIND DRTA STABILITY CLASS A CLA33 FREQUENCY (PERCENT) = 1.78 NIND DIRECTION FROM SPEED N NNE NE ENE E ESE SE $5E S 85W SW WSW W WNW NW NNW VRBL TOTAL f 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 e 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 4-7 0 0 0 0 0 1 13 1 0 1 1 0 0 1 1 0 0 19
' (1) .00 00 ,00 00 00 65'9.50 .45 .00 65 65 .00 .00 .65 .65 .00 00 12.42 l> (2) 00 .00 00 00 .00 .01 .15 .01 .00 01 .01 00 .00 .C1 .01 .00 00 .22 i
8-12 0 0 0 0. 4 11 40 13 2 3 15 12 -9 1 5 2 0 119 (1) .00 .00 .00 .00 3.92 1.19 26.14 9.50 1.31 1.96 9.80 1.44 5.88 .65 3.27 1.31 .00 71.78 (2), ,00 .00 .00 00 07 .13 46 .15 .02 .03 .17 ,14 .10 .01 06 02 .00 1.38 l 13-18 1 0. 1 C. 0 0 0 0 0 2 2 1 4 4 0 0 15 (1) .66- 00 .65 00 ' . 00 00 .00 .00 .00. 1.31 1.31 ' 000 . 65 2.61 2.61 .00 00 9.80 (2) 01 .00 01 00 00 00 .00 . 00 00 02 .02 00 . 01 . 05 05 00 00 .17 19-24 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 GT 2 4 ' 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
ALL $PEEDS 1 0 1 0 6 - 12 $3 14 2 6 18 12 10 6 2 0 153 )
(1) .65 00 .6$ .00 3.92 7.84 34.64 9.15 1.31 3.92 11.76 7.84 6.54 3.92 6.54 10 .1.31 00 100.00
-(2) ' .01. . 00 - .01 00 .07 .14 .62 .16 02 01 .21 .14 .12 .07 .12 .02 .00 1.78
' (1)* PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)* PERCENT OF ALL GOOD OBSERVATIONS FOR THis PERIOD C= CA1J4 l WIND SPEED LESS THAN QR EQUAL TO .D5 MPH)
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$EABROOK JAN98-DEC98 NET DATA JOINT FREQUENCY DISTRIBUTION (210-F007 TONER) 43.0 FT WIND DATA $7 ABILITY CLASS B CLASS FREQUENCY (PERCENT)
- 3.14 WIND DIRECTION FRO 4 SPEED N. NNE NE ENE - E ESE SE SSE $ ' $$W AN WSW W WNW NW !!NW VRBL TOTAL MPH CALN O O O O O O O O O 0 0 0 0 0 0 0 0 0
- (1) 00 ,00 .00 00 00 .00 00 00 .00 .00 .00 00 00 .00 .00 .00 00 .00 (2) . .00 .00 .00 .00 00 00 00 .00 .00 00 00 00 00 .00 00 00 .00 00 C-3 0 0 . 0 1 0 0 0 0 0 0 1 1 0 0' 1 0 0 4 (1) - .00 - .00 00 . 37 .00 00 .00 ,00 .00 00 .37 .37 .00 .00 - .37 .00 00 1.48 (2) 00 00 00 01 .00 .00 00 .00 00 - 00 .01 .01 .00 .00- 01 .00 00 .05
( 4*7 1 1 0 1I 4 '4 12 - 3 0 1 2 5 11 5 1 1 0 56 (11 .37 .37 00 .31 2.96 1,48 4.44 1.31 00 .37 74 1.85 .4.07. 1.85 .37 .37 .00 20.74 (2) - .01 01 . .00 01 .09 .05 .34 .01: .00 01 .02 .06 .13 06 .01 .01 .00 .65-6-12 3 0 2 3 ' 21 11 12 5 4 6 23 15 18 4 14 2 0 147
{1) ' 1.11 - 00- 74 1.11 7.78 4.07 4.44 1.85 1,48 2.22 8.52 5.56 6.67 2.96 5.19 74 00 54.44 (21 '.03 .00 02 03 .24 .13 .14 .06 05 07 .27 .17 .21 .09 J6 .02 .00 1.71 13+18 ' 1 0 3 2 1 1 0 0 0 1 9 10 2 9 14 1 0 54 (1) .37 .00 1.14 4 74 37 .37 00 .00 00 .37 3.33 3.70 74 3.33 5.19 .31 .00 20.00 (2) 01 .00 .03 02 .01 01 00 00 00 .01 .10 .22 ,02 .10 : .16 .01 .00 63 19-24 0 0 4 0 0 0- 0 0 0 0 0 0 0 3 0 0 0 7 (11 .00 ,00 1.48 .00 00 00 .00 .00 .00 00 . 00 ' .00 .00 1.11 .00 00 00 2.59 (2) - 00 .00 .05 .00 00 00 .00 .00 .00 .00 .00 .00 .00 03 .00 00 00 .08 GT 24' O- 0 2 0' "0 0 0 0 0 0 0 0 0 0 0 0 "O 2 (1) ~ .00 .00 14 .00 ,00 00 .00 .00 00 00 .00 00 .00 .00 .00 .00 .00 74 (2) 00 .00 .02 00 00 00 .00 .00 00 .00 .00 .00 .00 .00 00 .00 .00 .02
'5 1 11 7 30 16 24 4 4 8 35 31 31 25 30 4 0 270 A1.L SPEED
,til $ . 1.8537 4.07 2.59 11.11 5.93 8.09 2.96 1,48 2.96 12.96 11.48 11.48 9.26 11.11 1,48 00 100.00 (2) 06 01 . 13 ,08 .35 . 17 .28 .09 .05 .09 .41 .36 .36 .29 35 .05 .00 3.14 (1)= PERCENT OF ALL GOOD OBSERVATIONS FOR TH18 PAGE (2)aPERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LES3 THAN OR EQUAL TO 9% MPH).
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l SEABROOK JAN98-DEC98 MET DATA JOINT FREQUENCY DISTRIBUTION (210-FOOT TOWER) 43.0 FT WIND DATA STABILITY CLAS3 C CLASS FREQUENCY (PERCENT) = 5.14 WIND CIRECTION FROM
$ PEED N NNE . NE ENE E ESE SE SSE 5 55W SW WSW W kNW NW NRW 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 (21 00 .00 00 .00 .00 .00 00 00 .00 .00 .00 .00 .00 00 .00 .00 . 00 .00 C-3 0 'l 0 1 0 1 0 0 0 1 1 1 0 4 2 1 0 13 (1) .00 .23 .00 .23 .00 .23 00 .00 00 .23 .23 .23 .00 .90 .45 .23 .00 2.93 (2) 00 .01- 00 .01 .00 .01 00 .00 .00 .01 01 .01 .00 05 .02 .01 .00 .lb 4-7 3 1 1 4 14 5 7 8 3 2 8 10 9 13 10 5 0 103 (1) .68 .23 .23 .90 3.16 1.13 1.58 1.81 .68 45 1.81 2.26 2.03 2.93 2.26 1.13 00 23.25 (2) .03 .01 .01 . 05 .16 .06 08 .09 03 .02 09 .12 .10 .15 .12 .06 00 1.20 8-12 4 1 0 10 29 20 16 9 2 10 19 28 25 33 29 4 0 239 (11 .90 23 .00 2.26 6.55 4.51 3.61 2.03 .45 2.26 4.29 6.32 5.54 7.45 6.55 .90 .00 53.95 I (2) .05 .01 .00 .12 34 .23 .19 .10 .02 .12 .22 .33 .29 .38 .34 .05 . 00 2.78 13+18 1 0 2 2 2 0 0' 1 0 0 10 7 13 22 20 3 0 83 (1) .23 00 45 .45 .45 .00 00 .23 .00 .00 2.26 1.58 2.93 4.97 4.51 .68 .00 18.14 (2) .01 ,00 .02 .02 ,02 .00 .00 01 .00 .00 .12 08 .35 .26 .23 .03 .00 .96 19-24 0 0 1 0 0 0 0 0 0 0 0 0 0 1 3 0 0 5 (1) 00 00 .23 .00 .00 .00 .00 00 .00 ,00 - 00 .00 00 .23 68 00 00 1.13 (2) 00 00 .01 .00 00 .00 00 00 00 .00 00 .00 00 .01 .03 .00 .00 .06 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) 00 .00 .00 a^ ^9 .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 l
ALL SPEEDS 8 3 . 1 'I 45 26 23 18 5 13 38 46 47 13 64 13 0 443 1 (1) 1.81- ,68 .90 3,84 10.tr 5.81 5.19 4.06 1.13 2.93 8.58 10.38 10.61 16.48 14.45 2.93 00 100.00 1 (21 ,09 .03 .05 .20 .52 30 .27 .21 .06 .15 .44 .53 .55 85 74 .15 .00 5.14 i (1)* PERCENT OF ALL GOOD OBSERVAT!ONS FOR THIS PAGE (2)* PERCENT OF ALL GOCD OBSERVAT!DNS FOR THIS PERIOD C= CAIR (WIND SPEED LESS THAN OR E',1JAL TO .95 MPHi i
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l SEABROOK JAN98-DEC96 MET LATA JOINT FREQUENCY DISTRIBUTION (210-F00T TOWER) 43.0 FT WIND DATA STABILITY CLASS D CLASS FREQUENCY (PERCENT) = 44.60 NIND O!RECTION FRCH SPEED ' .N NNE NE ENE E ESE SE SSE S SSN SW WSN W NNW ~ NW kNW VRBL TOTAL MPH CALM. 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 (1) .00 400 .00 03 .00 .00 00 .00 00 .00 .00 .00 .00 .00 .00 .00 .00 .03 (2) 00 .00 00 .01 .00 .00 00 .00 .00 .00 .00 . .00 00 .00 .00 .00 00 01 C- 3 14 7 11 13 9 4 6 12 6 4 9 15 13 21 30 16 0 198 (1) 436 .19 .29 .34 .23 .10 .16 .33 .21 .10 .23 39 .34 70 .74 .42 00 5.15 (2) .16 .00 .13 ,15 .10 05 .01 ,14 .09 .05 .10 .17 .15 31 .35 .19 .00 2.30 4-7 87 50 64 94 - 117 61 SS 101 55 103 101 - 91 109 128 141 125 0 1526 (1) 2.26 1.51 1.66 2.44 3.04 1.74 2.21 2.63 1.43 2.68 2.63 2.37 2.83 3.33 3.67 3.25 .00 39.67 (2) 1.01 67 ,74 1.09 1.36 70 .99 1.17 .64 1.20 1.17 1.06 1.27 - 1.49 1.64 1.45 .00 17.72 B-12 71 63 103 06 109 60 . 47 27 30 65 - 120 83 99 191 182 71 0 1413 (1) ' is65 1.64 2.68 2.24 2.83 1.56 1,22 70 76 1 69 3.12 2.16 2.57 5.12 4.73 1.85 .00 36.73 (2) 62 73 1.20 1.00 1.27 70 .55 31 35 75 1.39 ' .96 1.15 2.29 2.11 .82 .00 16.41 13-16 4 15 120 29 15 3 1 6 1 4 34 19 40 114 149 6 0 560
. (1) .10 .39 3.12 75 .39 08 03 .16 .03 .10 80 49 1.04 2.96 3.67 .16 00 14.56
- (2) 05 .17 1.39 34 .17 .03 .01 .07 .01 .05 .39 .22 .46 1.32 1 73 407 00 6.50 19-24 0 0 63 4 5 1' 0 0 0 1 1 1 3 19 18 0 0 116 (1) ~ .00 .00 1,64 .10 .13 .03 .00 . 00 .00 .03 03 .03 .06 .49 .47 .00 00 3.02 (2) .00 .00 ,73 05 .06 01 .00 00 .00 .01 .01 .01 .03 .22 .21 .00 00 1.35 GT 24 0 0 32 1 0 0 0 0 0 0 0 0 0 0 0 0 0 33 (1)- .00 .00 .63 ' .03 .00 .00 00 00 .00 .00 00 .00 .00 .00 00 00 00 66 (2) .00 00 .37 01 .00 .00 .00 .00 .00 .00 00 00 00 .00 .00 .00 .00 38
'ALL $PEEDS 176 143 393 220 255 135 - 139 146 94 171 265 209 264 405 $20 218 0 3847 (1) 4.51 3.12 10.22 5.93 6.63 3.01 3.61 3.80 2.44 4.60 6.89 5.43 6.06 12.61 13.52 5.67 - .00 100.00 l (2) 2.04 1.66 4.56 2.65 2.96 .1.57 1.61 1.70 1.09' 2.06 3.08 2.43 3.07 5.63 6.04 2.53 00 44.60 (li* PERCENT OF ALL 000D OBSERVATIONS FOR TH18 PAGE (2)* PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD Ca CALM (WIND 8 PEED LESS THAN OR EQUAL TO .95 HPH) i r
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l SEABr,00K JAN98-DEC98 MET DATA JOINT FREQUENCY *i$fRIBUT10N (710-Foot TowtR) 43.0 FT WIND CATA $TABILITY CLASS E CLASS FREQUENCY (PERCENT) = 31.68 NIND DIRECTION FRCM SPEED N NNE WE ENE E ESE SE $$E S $$N SW WSW N WNW NW NNW VR BL TOTAL MPH CALM 1 0 0 0 0 1 0 0 0 0' 0 0 1 0 0 1 0 4 (1) ,04 00 00 . 00 00 .04 .00 .00 00 .00 .00 00 .04 .00 .00 .04 .00 .15 (2) 01 00 00 00 .00 01 ,00 .00 .00 .00 .00 00 .01 00 .00 .01 00 .05 l
C 21 17 25 45 42 19 15 21- 24 34 50 32 61 51 41 37 0 $35 (1) 77 62 .92 1,65 1.54 .70 .55 77 .88 1.25 1.83 1.17 2.24 1.87 1.30 1.36 00 19.61 (2) .24 .20 .29 .52 .49 .22 .17 ' .24 .28 .39 .58 .31 71 .59 48 .43 .00 6.21 4-7 27 - 28 36 35 62 37' 49 39 53 101 163 263 203 177 168 52 0 1493 (1) 99 1.03 1,32 1.20 2.27 1.36 1.80 1.43 1.94 3.70 5.98 9.64 7.44 6.49 6.16 1,91 )
.00 54.73 j (2) . .31 .33 .42 .41 12 .43 .5? .45 62 1,17 1.89 3.05 2.36 2.06 1.95 .60 .00 17.34 8-12 12 0 24 19 20 10 6 12 9 36 113 110 55 80 46 2 0 562 (1) .44 .29 .88 70 . 73 .37 .22 .44 .33 1.32 4.14 4.03 2.02 2.93 1,69 07 .00 20.60 (21 .34' .09 .28 .22 .23 .12 .07 .14 .10 .42 1.31 1.28 .64 ,93 .53 02 .00 6.53 13-18 0 . 2 33 9 6 3 1 3 3 4 19 2 4 11 9 0 0 111 (1) .00 07 1.21 .33 .29 .11 .04 .11 .11 .15 70 .07 .15 .40 33 00 00 - 4.07 ,
(2) . 00 .02 . 38 ' ,10 .09 03 .01 03 .03 05 .22 .02 05 .13 .10 .00 .00 1.29 j 19+24 0 1 9 0 5 2 0 '0 0 0 0 1 0 0 0 0 0 18 .
(1) .00 04 ' 33 00 .10 07 .00 .00 00 00 00 04 .00 .00 .00 .00 00 .66
- (21 .00 01 .10 .00 .06 .02 .00 00 .00 00 .00 01 00 .00 .00 .00 .00 .21 CT 24 0 0 0 0 3 2 0 0 0 0 0 0 0 0 0 0 0 5 (11 00 . .00 .00 00 .11 .01 .00 00 00 .00 00 ..00 .00 00 .00 .00 .00 .18 (2) .00 .00 00 .00 .03 02 ,00 .00 .00 .00 .00 . 00 .00 .00 .00 .00 .00 .06 ALL 8 FEEDS 61 56 127 108 140 ' 74 71 75 89 175 345 400 324 319 2 04 92 0 2728 (1) .2.24 2.05 4.66 3.96 5.13 2.71 2.60 2.75 3.26 6.41 12.65 14.96 11.88 11.69 9.68 3.31 00 100,00 .l
- (2) 71 .65 1.47 1.25 1.63 .86 .82 87 1.03 2.03 4.01 4.74 3.76 3.70 3.07 1.07 .00 31.68 l 11)* PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (2)* PERCENT OF ALL GOOD OBSERVATIONS FOR THIS FERIOD 4 C* CAIJ4 (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) l I
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e SEABROOK JAN98-DEC96 MET LATA JOINT FREQUENCY DISTR 18UTION (210-FOOT TOWER) 43.0 FT WIND DATA STABILITY CLASC F CLASS FREQUENCY (PERCENTI a 7.71 NIND DIRECT 10N FROM SPEED N NNE HE ENE E ESE SE SSE 5 SSN SW NSW W NRW NN - NNW VRBL TDTAL MPH CALM 1 0 1 1 1 0 0 1 0 0 0 1 0 0 0 1 0 7 (1) ,15 00 .15 .15 .15 00 .00 .15 .00 .00 00 .15 ,00 .00 .00 .15 .00 1.05 (21 .01 00 .01 ,01 .01 00 .00 .01 .00 .00 .00 .01 00 .00 .00 01 .00 .08 C-3 11 8 10 13 11 7 5 8 6 17 2e 53 58 48 26 13 0 322 (1) 1.66 1.20 1.51 1.96 1,66 1.05 75 .20 .90 2.56 4.22 7.98 8.73 7.23 3.92 1.96 .00 48.49 (2) .33 .09 .12 .35 .13 .08 .06 .09 .07 .20 33 62 .61 56 .30 .15 .00 3.74 4-7 7 1 1 4 9 5 3 J 1 1 29 70 42 67 60 14 0 323 (1) 1.05 .15 .15 .60 1.36 75 .45 45 .15 1.05 4.31 10.54 6.33 10.09 9.04 2.11 .00 48.64 (21 08 .01 ,01 .0! .10 .06 03 .03 .01 .08 .34 .81 .49 78 70 .16 00 3.75 8-12 0 0 1 1 0 0 2 0 0 0 3 1 1 1 0 0 0 10 (1) 00 .00 .15 .15 .00 .00 30 00 .00 ,00 .45 .15 .15 .15 .00 .00 . 00 1.51 (2) .00 .00 .01 .01 00 .00 .02 .00 .00 .00 01 .01 01 01 00 .00 .00 .22 13-18 0 0 0 0' O O O O O O -0 0 0 1 1 0 0 2 (1) 00 .00 .00 .00- .0u .00 .00 .00 .00 .00 .00 .00 .00 .15 .15 .00 .00 .30 (2) .00 .00 .00 - 00 .00 .00 .00 .00 .00 00 .00 .00 .00 01 .01 .00 .00 02 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 .0D 00 GT 24 3 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 80EEDS 19 9 13 19 21 . 12 10 12 1- 24 60 125 101 117 81 28 0 664 (1) 2.86 1.36 1.96 2.86 3.16 1.81 1.51 1.81 1.05 3.61 9.04 18.83 15.21 17.62 13.10 4.22 .00 100.00 (2) .22 .10 .15 .22 .24 .34 .12 .14 .08 .28 .70 1.45 1. ) t 1.36 1.01 .33 .00 7.71 (It = PERCENT CF ALL GOOD OBSERVATIONS FOR THIS PAGE (21=FEkCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (N!ND $ PEED LESS THAN OR EQUAL TO 95 MPHI I~
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i 5EABROOff JAN98-DEC98 MET DATA JOINT ITEQUENCY DISTRIBUTION (210-FOCf TOWER) 43.0 FT NIND DATA STABILITY CLAS$ 0 CtJ.55 ITEQUENCY (FERCENT) = $.88 WIND O! RECT 10N FRCH SPEED N NNE NE ENE E E3E SE SSE 5 ESW SW WSW W WhW NW NNW VRBL TOTAL HPH CAUM e 0 0 1 0 0 0 0 0 0 0 1 0 0 v 1 0 3 (1) .00 00 .00 .20 .00 00 00 .00 00 .00 00 .20 00 .0? 00 .20 00 .59 (2) 00 .00 .00 .01 .00 .00 00 .00 .00 00 .00 .01 .00 .00 .00 .01 00 .03 C-3 4 5 6 5 4 2 0 0 2 8 32 41 104 109 50 13 0 391 (1) 79 .99 - 1.19 99 79 .0 .00 .00 .40 1.58 4.32 9.29 20.55 21.54 9.88 2.5' 00 17.27 (2) .05 06 .07 06 .05 .02 00 .00 02 .09 .37 .55 1.21 1.27 .58 ,15 .00 4.54 4-7 0 0 0 0 1 0 1 1 0, 2 7 15 21 41 21 1 0 111 (1) 00 00 00 .00 .20 .00 .20 .20 00 .40 1.36 2,96 4.15 8.10 4.16 .20 00 21.94 (2) 00 .00 .00 .00 .01 00 .01 .01 .00 .02 .04 .17 .24 .46 24 .01 00 1,29 8-12 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 (1) .00 00 00 00 .20 00 00 iOO .00 .00 .00 00 .00 00 .00 .00 .00 .20 (2) 00 .00 .00 00 .01 .00 00 00 00 .00 .00 .00 .00 .00 .00 .00 .00 .01 13-18 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 10 (21 .00 .00 .00 .00 .00 00 -00
. .00 00 .00 .00 .00 00 .00 .00 .00 .00 .03 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (1) . 00 00 .00 00 00 .00 00 .00 .00 00 .00 00 .00 .00 .00 .00 .00 00 (2) 00 .00 00 .00 .00 00 .00 .00 00 .00 .00 00 00 .00 .00 00 .00 .00 GT 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (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 .00 .00 .00 00 .00 00 .00 .00 00 ;
l ALL SPEED $ 4 5 6 6 6 2 1 1 2 10 39 63 125 150 71 15 0 506 j
- 11) .79 .99 1.19 1.19 1 19 40 .20 .20 .40 98 7.11 12 a45 24.70 29.64 14.03 2.96 00 100.00 i (2) .05 .06 .07 .07 .07 02 .01 .01 .02 ,12 .45 .73 1.45 1.74 .82 .17 .00 5.88 !
(1)* PERCENT OF ALL GOOD OMERVATIONS FOR THIS PAGE (2)* PERCENT CF ALL 000D OSSERVATIONS FOR THIS PER100 Ca CAIJ4 (WIND SPEED LE55 THAN OR EQUAL TO 95 MPH) 6c .. . . _ . . . . . _ _ . _ _ .
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SEABkOOK JAN98-DEC98 MET DATA JOINT FPEQUENCY DISTRIBUTION (210* FOOT TOWERl 43.0 FT WIND DATA $TABILITY CLASS ALL CLASS FREQUENCY 1 PERCENT! = 100.00 WIND DIRECTION f1tCM SFEED N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW VRBL TOTAL MPti CALM 2 0 1 3 1 1 0 1 0 0 0 2 1 0 0 3 0 15 til .02 .00 .01 .03 01 .01 .00 .01 .00 00 .00 .02 .01 .00 .00 .03 .00 .17
- 42) .02 .00 .01 .03 .01 01 .00 .01 .00 .00 .00 .02 .01 00 .00 .03 .00 .17 C-3 50 38 52 78 66 33 26 41 40 64 121 149 236 239 150 80 0 1463 til 58 .44 60 .91 77 .38 .30 .48 .46 74 1.41 1.73 2.74 2.78 1.74 ,93 .00 16.99 (2) 58 .44 60 .91 77 .38 .30 .48 .46 74 1.41 1.73 2,74 2.78 1,74 93 .00 16.99 4-1 125 89 102 1 36 211 119 170 156 112 217 311 454 395 432 402 198 0 3631 II) 1.45 1.03 1.18 1.60 2.45 1.38 1.97 1.01 1.30 2.52 3.61 S.27 4.59 5.02 4.67 2,30 .00 42.17 12: 1.45 1.03 1.18 1.60 2.45 1.38 1.97 1.01 1.30 2.52 3.61 5.27 4.59 5.02 4.67 2.30 00 42.17 8-12 90 72 130 119 186 112 123 66 47 120 293 249 207 320 216 81 0 2491 J (1) 1.05 ,84 1.51 1.38 2.16 1.30 1.43 77 .55 1.39 3.40 2.89 2.40 3.72 3.21 .94 00 28.93 i (2) 1.05 84 1.51 1.38 2.16 1.30 1.43 .77 .55 1.39 3.40 2.89 2.40 3.72 3.21 .94 00 28.93 13-18 7 17 159 42 26 7 2 10 4 11 14 38 60 161 197 10 0 825 Ill 08 .20 1.85 .49 .30 .08 .02 .12 05 .13 86 .44 70 1.87 2.29 .12 .00 9.58 (2) .0a .20 1.85 .49 .30 .08 .02 .12 05 .13 .86 .44 70 1.87 2.29 .12 .00 9.58 19-24 0 1 17 4 10 3 0 0 0 1 1 2 3 23 21 0 0 146 (1) .00 .01 ,89 .05 .12 03 00 00 .00 .01 .01 02 .03 .27 .24 .00 .00 1.70 l
.(21 .00 .01 89 .05 .12 .03 .00 .00 .00 .01 01 .02 03 .27 .24 00 .00 1.70 GT 24 0 0 34 1 3 2 0 0 0 0 0 0 0 0 0 0 0 40 (1) ,00 00 .39 .01 .03 .02 .00 .00 .00 .00 .00 .00 .00 00 00 00 .00 46 (2) 00 .00 39 .01 03 ,02 .00 .00 .00 00 .00 .00 00 .00 .00 .00 00 .46 ALL SPEEDS 274 217 555 385 503 277 321 274 203 413 800 894 902 1115 1046 372 0 b611 (1) 3.10 2.52 6.45 4.47 5.84 3.22 3.13 3.18 2.36 4.80 9.29 10.38 10.47 13.65 12.15 4.32 .00 100.00 (2) 3.18 2.52 4.45 4.47 5.84 3.22 3.73 3.18 2.36 4.80 9.29 10.38 10.47 13.65 12.15 4.32 .00 100.00 41)*PF.RCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE (21 = PEF, CENT OF ALL GOOD AL*3ERVATION? FOR THIS PERIOD C* CAIJf (WIND SPEED LESS THAN OR E7JAL TO 95 MPH)
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l SEABROOK JAN96-DEC9$ MET DATA JOINT FREQUENCY DISTRIBUTION (210-F00T TOWER) 209.0 FT WIND DATA . STABILITY CLASS A. CLASS FPEQUENCY (PERCENT) = 1.77 WIND DIRECTION FROM
- $ PEED N NNE NE ENE E ESE $E SSE 'S $3M SW W3M N WMN NW NNW VRSL . 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0- 0 lli .00 .00 ,00 00 .no 00 00 .00 .00 .00 00 .00 . 00 .00 .00 .00 00 00
' 42) .00 .00 .bo .00 .00 00 00 00 .00 .00 - ,00 .00 00 .00 00 00 .00 .00 4-7 0- 0 0 0 -1 0 1 1 0 .0 0 0 0 0 0- 0 0 3 (1) .00 .00 00 .00 . 67 ' .00 .61 67 ..00 .00 .00 .00 .00 00 00 00 .00 2.01 (2) . 00 - .00 00 .00 .01 .00 .01 .01 .00 .00 00 .00 .00 ,00 00 . .00 00 .04 8-12 0' 0 c. 0 3 5 35 10 0 1 $ 2 4 1- 1 1 0 68 (1) 00 .00 00 .00 2.01 3.36 23.49 6.71 .00 .61 3.'36 1.34 2.68 .61 67 .67 .00 45.64
-(2) .00 ' .00 00 .00 04 .06 .41 .12 .00 .01 .06 .02 .0$ .01 .01 01 .00 .81 13-18 -O' O 1 0 1' 1 11 ' 14 . 0 4 12 9 $ 1. S 1 0 45 (1) 00 00 67 .00 .67 .61 7.38 9,40 '. 00 2.68 8.0S 6.04 3.36 .67 3.36 .61 .00 43.62 (2) - .00 .00 01 00 .01 .01 .13 .17 .00 .05 .14 .31 .06 01 06 .01 .00 .77 19-24 0- 0 0 0 0 2 0 0 1 1 0 1 3 2 0 0 11 (1): .671 .. 00 ' .00 .00 .00 .00 1.34 .00 .00 .67 67 00 -.6'. 2.01 1.34 ,00 .00 7.38 (2) . 01 . 00 00 00 .00 .00 .02 .00 .00 .01 .01 00 .01 .04 . .02 00 00 .13 GT 24 0 0- 0 0 'O O O O O O O 0 0 2 0 0 0 2 (1) 00 00 .00 00 .00 .00 .00 00 .00 .00 ' .00 00 .00 1.34 00 00 .00 1.34
- 12) 400 ,00 00 .00 ' . 00 .00 .,0 0 .00 .00 .00 00 .0) 00 .02 .00 .00 .00 .02 ALL EPEEDS 1 'O 1 0' S 6 49 25 0 6 18 11 10 7 8 2 0 149 (1) 67 00 47 - .00 3.36 4.03 32.89 16.76 00' 4.03 12.08 1,38 6.71 4.70- 4.37 1.34 00 100.D0 ,
(2) .01 .00 01 .00 06 .07 . 59 - .30 .00- .07 .21 .13 .12 .00 09 .02 00 1 77 1 til-PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PAGE .
(2)=FERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD
' C= CALM (W'.ND SPEED LESS THAN Ok EQUAL TO .95 MPH) .
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FEABROOK JAN984EC98 MET LATA J01NT FREQUENCY D!$TRIBUTION (210-FOOT TOWER) 209.0 FT N!ND LATA STABILITY CLASS B (.1.A35 FREQUENCY (PERCENT) = 3,16 NIND DIRECTION FRCe(
$ PEED N NME NE ENE E ESE SE SSE 8 SSW SW NSW N ~n NW RW NNW YpBL TOTAL HPH
' CA!J4 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 .0G 00 .00 .00 .00 .00 .00 C-3 0 0 1 0 0 0 0 0 0 0 1 0 0 0 1 0 0 3 (1) 00 00 ,37 00 .00 .00 .00 00 .00 00 .37 .00 00 .00 .37 .00 00 1.12
' (2) .00 .00 .01 .00 .00 00 .00 .00 .00 .00 .01 00 .00 .00 .01 ,00 .00 .04 4-7 0 1 0 2 4 3 6 2 0 1 2 1 5 1 2 0 0 30 (1) ., 0 0 .37 00 75 1.50 1.12 2.25 75 .00 37 15 37 1.07 .37 75 .00 00 11.24 (2) 400 . 01 - .00 .02 .05 ,04 .07- .02 00 .01 02 .01 .06 .01 .02 .00 00 .36
'8-12 2 0- 1 2 12 15 13 5 I 1' T 12 9 6 2 1 -0 91 (1) - 75 .30 .37 75 4.49 5.62 4.87 1,81 .31 .37 2.62 4.49 3.17 3.00 75 . 37 00 34.08 (2) 02 00 01 .02 .14 .18 15 .06 .01 .01 .08 .14 .11 .09 .02 .01 .00 1.08 13-18 3 0 4 2 4 2 4 8 . 2 2 20 16 11 8 15 1 0 102 (1) 1,12 00 1.50 75 1.50 75 1.50 3.00 15 15 7.49 5.99 4.12 3.00 5.62 .31 .00 38.20
. (2) .04 00 .0S 02 .f5 .02 .05 09 .32 .02 .24 .19 .13 .09 .16 ,01 .00 1.21 19-24 1 0 1 0 0 0 0 0 0 0 4 3 3 9 to 0 0 31 (1) .37 00 .37 .00 00 .00 .00 00 00 00 1.50 1.12 1.12 3.37 3.75 .00 .00 11 61 (2) . 01 .00 .01 .00 .00 .00 .00 .00 .00 .00 .05 04 .04 .11 .12 .00 .00 .37 GT 24 0 0 5 0 0 0 0 0 0 0 1 0 0 4 0 0 0 10 (1) '.00 .00 1.87 .00 .00 .00 .00 00 .00 .00 37 .06 .00 1.50 .00 .00 .00 3.75 (2) .00 .00 04 .00 .00 00 .00 .00 .00 .00 .01 .00 .00 .0$ .00 .00 .00 .22 ALL SPEEDS 6 1 12 6 20 20 23 15 3 4 35 32 23 30 30 2 0 267 (1) . 2.25 .31 4.49 2.25 7.49 7.49 S.61 5.62 1.12 1.50 13.11 11.99 10.49 11.24 11.24 75 00 100.00 (2) 07 .01 .14 .07 .24 .24 .27 .18 .04 .05 .41 .38 .33 .36 .36 .02 .00 3.16 (1)* PERCENT OF ALL GOOD OBSERVATIONS ftR TM18 PAGE (2)aPERCENT OF ALL GOOD CBSEPVATIONS FOR THIS PERIOD Ca CALM (NIND SPEED LE33 THAN OR EQUAL TO 95 MPHI
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. fiEABkOOK JAN98-DEC98 NET (ATA Jo!NT FREQUENCY DISTRIBVTION (210-F007 TOWER) lJ9.0 FT WIND CATA STABILITY CLAS$ C CLAS3 FRIQUENCY IPERCENT) = 5.22 NIND O!RECTION TPCM SPEED N NNE fl ENE E ESE SE $$E 8 3SW SW NSW W WNW NW NNN V!tBL TOTAL MPH CALM 0 0 'o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 D (1) 00 .00 .00 .00 .00 .00 .00 00 .00 00 .00 00 .00 .00 .00 00 00 .00 (21 .00 00 .00 .00 00 00 .00 00 00 .00 00 .00 00 00 .00 .00 00 00 C-3 1 0 2 2 0 0 0 1 0 0 1 i 0 1 1 0 0 10 (1) .23 00 .45 .45 .00 .00 .00 .23 .0" .00 .23 .23 00 .23 .23 .00 .00 2.21 (2) 01 00 02 .02 .00 .00 .00 .01 ;0 00 01 .01 .00 .01 .01 .00 00 .12 4-7 1 2 1 2 3 le 1 2 2 0 5 3 2 4 4 4 0 46
- 11) .23 .45 .23 .45 .68 2.27 .23 45 .45 .00 1.14 68 .45 .91 .91 91 .00 10,45 (2) 01 .02 .01 .02 04 .12 01 .0. 02 00 .06 .04 .02 05 .05 .05 .00 .55 4-12 2 2 0 6 19 29 19 13 4 6 11 19 19 27 20 3 0 199 (1) 45 .45 00 1.36 4.32 6.59 4.32 .93 91 1.36 2.50 4.32 4.32 6.14 4.55 .68 ,00 45.23 (2) .02 02 .00 .07 .23 34 .23 .15 05 .07 .13 .23 .23 .32 .24 04 .00 2.36 13-18 2 0 0 5 2 1 4 6 2 5 il 16 15 26 23 1 0 125 (1) .45 00 .00 1. 3n 46 .23 .0' 1.36 45 1.14 3.64 3.64 3.41 5.91 5.23 .23 .00 28.41 (2) 02 .00 .00 07 02 .01 of4 .07 .02 .06 .20 .19 .18 31 .27 01 .00 1.49 19-24 2 0 3 0 0 0 1 0 0 3 4 11 17 9 3 0 53 (1) ,45 .00 E4 .0J 00 00 10 .23 .00 00 .68 .91 2.50 3.86 2.05 .6a .00 12.05 (2) 02 0a .a* .a0 00 .00 00 .01 00 .00 .04 .05 .13 ,20 .11 .04 .00 .63 GT 24 0 J 0
- 0 0 0 0 0 0 v 0 1 2 4 0 7 I (11 .00 .00 .00 .00 00 .'c .00 .00 .00 .00 .00 .00 . 2.3 .45 .91 00 .00 1.59 1 (2) ,00 00 00 00 00 .00 .00 .00 .00 .00 .00 .00 01 .02 .05 00 t00 .06 i ALL $ FEEDS 4 4 6 16 24 40 23 21 8 11 37 43 48 77 61 11 0 440 (1) 1.s2 91 1.36 3.64 5.45 9.09 5.23 5.23 1,82 2.50 8.41 9.11 10.91 17.50 13.86 2.50 .00 100.00
-(2) .09 .05' .07 .19 .28 .47 .27 .27 .09 .13 .44 .51 57 .91 72 .13 .00 S.22 (1)* PERCENT OF ALL GOOD OBSERVATIONS FOR THIS FAGE (2)* PERCENT OF ALL GOOD OBSIDVATIONS FOR THIS PERIOD C CAut (WIND SPEED LEBS THAN OR EQUAL TO 95 MPH) l l
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!. 209.0 FT WIND LATA STABIL17Y CLASS D CLASS FREQUENCY (PERCENT) = 44.26' WIND DIRECTION P90M
. SPEED .N ENE N4 ENE .E ESE ' SE SSE S $$W SW W3W W WNW NW NNW VRBL TOTAL l MPH 1
l CALM 0 -0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 l til .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 .no . 00 ,00 ,00 .00 00 00 00 .00 400 00 C-3 11 4 7 12 11 6 3 $ 0- 2 1 2 0 5 6 6 0 89 (1) . .29 .11 .19 .32 .29 ' .16 .08 .13 .00 .05 .03 .05 .21 .13 .16 .16 .00 2.38 (2) .13 05 .04 .14 .13 .07 .04 .06 . .00 .02 .01 02 . 09 . .06 .07 .07 .00 1.05 41k . 50 30 . 29 68 61 59 53 28 24 29 41 ' 45 50 51 70 41 0 729 (11 .1.34 60 78 1.42 1.63 1.58 1,42 .75 .64 78 1.10 1.21 1.34 1.37 1.87 1.10 .00 19.52 (21 .59 f 36 .34 81 72 70 ' .63 .33 .28 .34 .49 .53 .59 .60 .8) .49 .00 8.64 6-12 99 52 60 71 59 94 97 ' 81 49 84' 112 69 74 120 120 73 0 1320 On 2.65 1.39 1,61 1.90 1.58 2.52 2.60 2.33 1.31 2.25 3.00 1.85 1.98 3,21 3.21 1.96 .00 .35.35 (2) 1.17 62 ,71 .84 . 70 1.11 1.15 1.03 .54 1.90 1.33 .82 88 1.42 1.42 .87 00 15.65 13-18 70 . 57 18 38 23 7 24 21 15 44 108 52 76 165 174 38 0 994 (If 1.87 1.53- 2,09 1.02 .62 - .19 64 56 .40 1.18 2.89 1.39 2.04 4.42 4.77 1.02 .00 26.62
- 12) 83 .68 .92 .45 ,27 08 .28 .25 .18 .52 1.28 .62 90 1.96 2.11 .45 .00 11.78 19-24 6 31 85 10 6 3 $ 7- 1 2 23 9 38 79 87 5 0 403
. (1) .16 .99 2.28 .27 .16 .08 .13 .19 .03 .05 62 .24 1.02 2.12 2.33 .13 .00 10.79 (2) .01 -. 4 4 1.01 .12 07 04 06 .08 .01 .02 .27 .11 45 .94 1.03 .06 .00 , 4,78 GT 24 0 10 100 3 4 3 1 0 0 1 1 1 16 35 24 0 0 199 l 0) . 06 .27 2.68 08 .11 .00 03 - .00 .00 .03 .03 .03 .43 94 64 00 .00 5.33 (2) .00 .12 1.19 .04 .05 .04 .01 00 .00 .01 01 01 .19 .41 .28 .00 .00 2.36 l
' ALL SPEEDS . 236 - 190 359 202 164 112 183 148 09 162 286 118 262 455 485 163 0 3734 (1) 6.32 5.09 9.61 5.41 4.39 4.61 4.90 3.96 2.38 4.34 7.66 4.77 7.02 12.19 12.99 4.37 - .00 100.00
'(2) - 2.80 2.25 4.26 2.39 1.94 2.04 2.11 1.75. 1.05 1.92 '3.39 2.11 3.11 5.39 5.75 1.93 .00 44.2C (1l*FEMCENT OF ALL GOOD 085ERVATIDMS FOR THIS PAGE
- (2)* PERCENT Or AI.L GOCD OBSEILVATIONS FOR TH18 PERIOD C= CALM IWIND $ PEED LESS THAN OR EQUAL TO 95 MPH) l i
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SEABROOK JAN98-DEC94 HET DATA JOINT FPEQUENCY DISTRIBUTION (210-F007 TOWER) 209.0 FT WIND DATA STABILITY CLASS E CLASS FREQUENCY (PERCENT) = 31.86 WIND DIRECTION FR 84 SPEED N NNE KE ENE E E3E SE SSE S SSW SN WSW W WNW NW KNW VRBL TOTAL HPH CALM 0- 0 0 2 3 1 1 0 0 0 0 0 0 0 0 0 0 7 (Il 00 .00 .00 .07 ,11 04 .04 .00 .00 .00 .00 .00 00 00 .00 .00 .00 .26 (2) .00 .00 .00 02 .04 01 .01 .00 00 .00 .00 .00 00 .00 .00 .00 .00 .08 C-3 7 4 13 19 17 21 11 10 10
- 4 7 4 1 3 6 0 138 (11 .26 .15 .48 71 .63 78 .41 .37 .31 .19 .15 .11 .15 04 .11 .22 .00 5.13 (2) 04 .05 .15 .23 .20 .25 .13 .12 .12 .06 05 .04 .05 01 .04 .07 .00 1.64 4-7 19 21 - 21 30 35 30 43 23 23 23 34 22 20 21 34 22 0 421 (1) 71 74 78 1,12 1.30 1,12 1.60 .86 .86 ,86 1.26 82 74 78 1.26 .82 00 15.66 (2) 23 .25 .25 36 .41 . 36 ' .51 .27 .27 .27 40 .26 .24 25 .40 .26 .00 4.99 8-12 38 33 30 23 11 13 38 44 56 93 160 126 108 140 135 69 0 1117
-(1) 1.41 1.23 1.12 86 .41 48 1.41 1.64 2.00 3.46 5.95 4.69 4.02 5.21 5.02 2.51 .00 ' 41.56 (21 45 .39 .36 .27 .13 .15 45 .52 .66 1.10 1.90 1.49 1.28 1.66 1.60 .82 .00 13.24 13-18 25 17 25 14 10 6 5 16 20 29 147 162 114 159 93 10 0 852 (1) 93 .63 .9) .52 .37 .22 .19 .60 74 1.08 5.47 6.03 4.24 5.92 3.46 .37 00 31.70 I (2) .30 .20 .30 .11 .12 .07 .06 .19 .24 .34 1.74 1.92 1.35 1.88 1.10 .12 .00 10.10 19-24 0 1 16 0 6 1 2 5 6 2 23 8 9 16 9 0 0 til (1) .00 .04 60 .30 .22 .04 07 .19 .19 07 .66 .30 .33 .60 .33 00 .00 4.13 (21 .00 .01 .19 .09 07 .01 ,02 06 .06 .02 .27 .09 .11 .19 .11 00 .00 1.32 GT 24' O 4 16 1 9 7 .1 1 0 1 1 1 0 0 0 0 0 42 (1) 00 15 .60 .04 .P3 .26 .04 .04 .00 .04 .04 .04 .00 00 00 .00 .00 1,56 (2) .00 .05 .19 ,01 .11 .08 01 01 .00 .01 .01 01 00 .00 00 .00 .00 .50 ALL SPEEDS 89 80 121 97 91 79 101 99 114 153 369 322 255 337 214 - 107 0 2688
( 11 ' 3.31 2.98 4.50 3.61 3.39 2.94 3.76 3.68 4.24 5.69 13.73 11.98 9.49 12.54 10.19 3,98 .00 100.00 (2) 1.05 95 1.43 1.15 1.08 94 1.20 1.17 1.35 1.81 4.37 3.82 3.02 3.99 3.25 1.27 .00 31.86 (1)* PERCENT OF ALL GOOD OBSERVATIONS FOR THIS FAGE (2)* PERCENT CF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CAIJ4 (WIND SPEED LESS THAN OR EQUAL TO .95 MPH) i i
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SEABROOK JAN96-DEC98 MIT DATA JOINT FREQUENC'l DISTRIBUTION (210-fVOT TOWER)
.'207.0 IT WIND DATA STABILITY CLAS3 F CLASS FREQUENCY (PERCENT) = .7,79 WIND DIRTCTION TRCH APEED N- NNE NE ' ENE E ESE' SE ' ESE 8 SSW SW WSW W' WNW ' NW NNW VRBL' TOTAL MPH CALM 0 0 0 0 0' 0 1 : 0- 0 0 0 0 0 0 0 -0 0 1 (1) - '00 .00 .00 .00 . .00 00 .15 .00 .c0 .00 .00 00 .00 ,00 .00 00 .00 15
- 12) .04 .00 .00 00 00 .00 . C'1 .00 00 ' .00 .00 00 00 .00 ,00 .00 .00 .01
'C-3 2 3 2 7 3 5 -5 3 4 1 0 3 1 '3 C 0 0 42 (1) - .30 46 .30 1.07 .46 76 76 .46 .61 .15 00 .46 .15 .46 .00 .00 .00 - 6.39 (2) .02, 04 .02 .08 04 .06 .06 04 .05 .01 .00 04 01 .04 ,00 .00 ,00 .50 4-7 '6 5 . 15 3 6 .3 to 6 12 10 14 11 .15 - 9- 10 to 0 145
- (1) 91 ' 76 2.26' .46 .91 .46 1.52 .91 1.83 1.52 2,13 1.67 2.28 1.37 1,52 1.52 .00 22.07 (21 07 06 .19 .04 07 - 04- .12 .07- .14 . .22 .17 .13 .18 .11 . ,12 .12 00 1.72 8 25 8 4 3 4 3 2 31 - 17 21 38 26 42 35. 36 19 0 294 (11 - 3.81 1.22 61 . 4 6 .. 61 46 .30 1 67 2.59 3.20 5.18 3.96 6.39 5.33 5.48 2.89 '. 00 44.15 (2) .30 09 .05 - 04 .05 .04 . .02 .13 .20 .25 ,45 31 -. 5 0 .41 .43 ,23: -,00 3.48 13-18 7 3 2 0 0 0 1 '4 1 2 .13 31 - 28 30 34 16 0 172
, (1) 1.07 .46 .30 .00 .00 .00 .15 .61 .15 .30 1.98 4,72 4.26 4.57 5.18 2.44 -. 00 26.18 (21 08 .04 .02 .00 .00 .00 01 .05 .01 02 .35 .37 33 36 .40 .19 . 00 - 2.04 19-24 0- 0 -0 -0 0 -0 0 0 0 0 1 0 0 0 2 0 0 '3 (1) .00 .00 .00 .00 06 .00 00 .00 .00 ' 00 .15 .00 .00 .00 .30 .00 .00 46 (2) 00 00 00 00 .00 .00 .00 .00 - .00 - .00 01 .00 .00 .00 .02 .00 00 .04 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 00 400 .00 .00 .00 . 00 - 00 .00 .00 .04 00 ALL SPEEDS 40 . 19 23 13 13 11 19 24 34 34 66 71 . 86 77 82 45 0 657 (1)- 6.09 2.89' 3.50 1.99 1.98 .1.67 2.89 3.65 5.18 5.1e 10.05 10.81 13.09 11.72 12.48 6 e5 . 00 100.00 (2) . 47 .23 .27 .15 .15 .13 .23 .28 ,40 .40 .78 .64 1.02 .9% .97 . 53 ^ . 00 7.79
,11)= PERCENT OF ALL GOOD OBSERVATIONS FOR TH1$ PAGE (2)* PERCENT OF ALL GOOD OBSERVATIONS FOR THIS PERIOD C= CALM (WIND SPEED LESS THAN OR EQUAL 70 . 95 MPH) 1 l
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. 209.0 IT WIND DATA - STABILITT CLASS G CLAS8 FREQUENCT (PERC G T) = 5.95 WIND DIRECTION FROM
$ PEED N NNE NE ENE E ESE SE SSE 8 SSW SW WSW W WNW NW , NRW VRBL TOTAL
, NPR CAU4 0 0. 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 (1) 0 . 00 . 00 00 .20 .00 00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 00 20
. (2)- 00 .00 .00- .01 00 - .00 .00 .00 .00 .00 .00 .00 .00 .00 00 00 00 01 C-3 0- 3 4 2 3 7 0 2 2 4 3 6 2 5 6 1 0 50 (ll. .00 60 .80 40 60 1,39 ,00 .40 .40 80 .60 1.20 .40 1.00 1.20 .20 ,00 9.96 (2). 00 ' .04 .05 .02 .04 89 00 ,02 .02 .05 .04 .07 .C2 .06 .07 .01 .00 .59 4-1' 15 9 11 3 4 0 3 11 9 18 . 18 ' 13 - 10 16 19 18 0 177 j
- f t ) '. 2.99 1,79 2.19 .60 .60 00 .60 2.19 1.79 3.59 3.59 2.59 1.99 3 19 3.78 3.59 00 35.26 I (2) .18 ,11 .13 .04 05 00 .04 .13 11 , .21 .21 1b .12 .19 .23 .21 00 2.10 B+12 L 16 9 3 1 0 0 1 3 9 15 24 17 12 35 44 22 0 211 (1) 3.19 1.79 60 ' .20 .00 .00 .20 .60 1.79 2.99 4.78 3.39 2.39 6.97 0.16 4.38 .00 - 42.03 (2) .1p .11 04 .01 0C 00 .01 .04 .11 .18 .28 .20 .14 .41 .52 26 .00 2.50 13-18 4- . 1- 0 0 0 0 0 1 0 e3 7 8 6 12 12 9 0 63 (1) 80 - .20 .00 .00 00 '. 00 00 .20 .00 .60 1,39 1.59 1.20 2.39 2.39 1.79 .00 12.53 (2)- ' . 05 01 : 00 .00- 00 00 00 .01 .00 .04 .09 .09 .01 .14 .24 .11 .00 75 19-24 0 0 0 0 0 - 0 0 0 0 0 0 0 0 0 0 0 -O O.
(1) .00 .00 .00 .00 .00 .00 00 00 .00 00 .G0 .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 2 4 0 0' .0 -4 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 5PEEDs 36 22 18 '7 7 7- 4 17 20 40 52 44 30 68 81 50 0 502 (1) - 6.97 .4.38 -3.59 1.39 1,39 1.39 .00 i 3.39 3.99 7.97 10.36 8.16 5.98 13.55 16.14 9.96 .00 100.00 (2) . .41 .26 .21 a 04 - .08 .08 .05 .20 .24 .47 .62 .52 36 .61 .96 .59 .00 5.95 (1)=FERCENT OF ALL GOOD OBSERVATIONS FOR THIS FAGE -
(2)* PERCENT OF ALL GOOD OBSERVATIONS FOR TH!$ FERIOD C= CAlkt (MIND STEED LES$ THAN OR EQUAL TO . 95 MPH) 1 I
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!!EABROOK JAN98-DEC98 MET CATA JOINT FREQUENCY DISTRIB11 TION (210-F00T TONER) 209.0 FT WIND LATA STABILITY CLA38 ALL ' CLASS FREQUENCY { PERCENT) = 100.00 W1ND DIRECTION FRON SPELD N NNE' NE ENE E ESE SE SSE 5 SSW SW ' WSW W WNW NW NNW VRBL TOTAL
. MPH CALM 0 0 0- 3 3 1- 2 0 0 0 0 0 0 0 0 0 0 9 (ll . 00 400 .,00 .04 04 01 .02 00 00 .C0 .00 .00 .00 .00 .00 .00 .00 ,11 (21 00 00 .00 .04 .04 .01 .02 .00 ' . 00 .00 .00 .00 00 00 00 .00 00 .11 i
C-3 21 14 29 42 34 39 19 21 16 12 10 15' 15 15 17 13 0 332
-(1) .25 17 .34 .50 .40 .46 .23 25 .19 .14 .12 .38 18 .10 .20 .15 00 3.94 (2) .25 .17 .34 .50 40 . ,46 .23 .25 .19 .14 .32 .18 .18 .10 .20 .15 .00 3.94 4-7 . 01 64 77 108' 114 105 117 73 70 81 114 95 102 102 139 95 0 1551-(1) 1.08 .41 .91 1.28 1.35 1.24 1.39 .87 .83 .96 1.35 1.13 1.21 1.21 1 65 1.13 00 . 18.38 (21 1.08 .81 .91 1.28 1.35 1.24 1.J9 87 83 .96 1.35 1,13 1.21 1.21 1.65 1.13 .00 18.38
$-12 182 98 106 106 159 205 173 136 221 357 '271 268 366 358 188 . 0 . 3300
- 11) '104 2.16 1.23 .1.16. 1.26 1.28 1.88 2.43 2.05 1.61 2.62 4.23 3.21 3.18 4.34 4.24 2.23 00 39.11 121 2.16 1.23 1.16 1.26 1.28 1.88 2.43 2.05 1.61 2.62 4.23 3.21. 3.18 4.34 4.24 2.23 ,00 39.11 13 111 .78 . 110 60 40 - 17 48 10 40 49 324 294 255 401: 360 76 4 2373 ill 1.32 92 1.30 471 .47 .20 .57 .83 .41 1.05 3.84 3.48 3.02 4.75 4.27 .90 .00 28,13 (21 - 1,32 .92 1.30 71 .47 .20 57 .83 .47 1.05 3.84' 3.48 3.02 4.75' 4.27 90 .00 28.13 19-24 10 34 105 18 12 4 9 13 6 5 55 24 62 '124 119 8 0 612 til .12 .45 1.24 .21 .14 05 411 .35 .07 .06 .65 .28 73 1.47 1.41 09 .00 7.25 12ru .12 .45 1.24 .21 .14 .05 .11 .15 .07 .06 .65 .28- 73 1,41 1.41 .09 00 1.25 GT 24 0 14- 121 4 , 13 10 2 1 0 2 3 2 17 43 '28 ~ 0 0 260 (15 00 - .17 1,43 . 05 - .15- .12 .02 .01 .00 .02 04 . 02 .20 51 33 .00 . 00 3,08 (2) .00 .17 1.43 .05 .15 .12 02 .01 ,00 .02 .04 .02 .20 .51 .33 .00 .00 3.06
- ALL $PEEDs 415 316 540 341 324 335 402 351 268 410 863 701 119 1051 1021 300 0 6437 til 4.92 3.75 6.40 4.04 3.84 3.97 4.76 4.16 3.18 4.86 10.23 8.31 0.52 12.46 12.10 4.50 00 100.00 l- (2) 4.92. 3.75 6.47 4.04 3.84 3.97 4.76 4.16 3.10 4.86 10.23 8.31 8.52 12.46 12.10 4.50 00 100.00
[ ..
! (1)*FERCENT Of ALL GOOD OBSERVATIONS FOR THIS PAGE (2)* PERCENT OF ALL GOOD OBSERVAT10NS FOR THIS PERIOD
- C* CAIJ4 (WIND SPEED LESS THAN OR EQUAL TO 95 MPH) 1 L ,
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ENCLOSURE 3 TO NYN-99048 Radiation Dose Assessment 0
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, Radiological Emuent Impact Assessrnent For 1998 l (Annual Radioactive Emuent Release Report)
I. Summary I l
Doses resulting from liquid and gaseous effluents from Seabrook Station during 1995 were l calculated in accordance with Method II as defined in the Station Offsite Dose Calculation Manual (ODCM). The calculational methods used follow the models in Regulatory Guide 1.109. The c*nlatinns included maximum whole body doses and organ doses from all liquid releases, maximum offsite organ doses resulting from airbome iodines, tritium and particulate radionuclides, and maximum offsite beta air and gamma air doses from airbome noble gases. Doses were also calculated for the special receptor locations inside the site boundary: the Science and Nature Center and the i
" Rocks". In addition, the potential direct dose from plant operation was evaluated. Doses from effluent releases and direct shine during 1998 are summarized in Table A.
i The calculated maximum annual total body dose and the maximum organ dose from liquid effluents each represent 0.02 % of the annual dose limits established by Technical Specification 3.11.1.2 (3 mrem total body and 10 mrem organ). The calculated annual maximum dose from ' airborne iodine, tritium and particulate radionuclides for offsite receptor locations represents 0.12% of the dose limit established by Technical Specification 3.11.2.3 (15 mrem organ),
whereas the calculated maxunum annual beta air and gamma air doses from airborne noble gases for offsite receptor locations represent 0.004% and 0.01% of the dose limits established by Technical Specification 3.11.2.2 (20 mrad beta air and 10 mrad gamma air). For onsite special receptors, the calculated annual doses from airborne effluents for both the Science and Nature Center and the
" Rocks" were also well below all Technical Specification dose limits.
l The sum of the maximum whole body doses from all exposure pathways for the liquid and gaseous effluents, plus the direct whole body dose from station operation, was 1.97E-02 mrem to a hypothetical individual at or beyond the site boundary. This whole body dose represents 0.08% of the annual whole body dose limit (25 mrem) for a member of the public as set forth in 40CFR190, CMBEFPLNT98.WPD -I-
and demonstrates compliance with that code. The maximum organ dose from all exposure pathways including direct dose was 2.16E-02 mrem. This represents 0.09% of the annual organ dose limit of 25 mrem to other organs, as set forth in EPA's environmental radiation standard for the uranium fuel j
cycle,40CFR190. I i
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II. Method for Calculatine the Total Body and Maximum Organ Doses Resultine from Liauid Releases ;
I The computer code IDLE, which is consistent with the models in Regulatory Guide 1.109 (Reference 1), was used to calculate the total body and organ doses resulting from liquid effluents
- from Seabrook Station. The general equations A-3, A-4, A-5, A-6 and A-7 from Regulatory Guide l 1.109 are applied in IDLE. The total body doses and the organ doses are evaluated for each of the four age groups (i.e., infant, child, teen and adult) to determine the maximum total body dose and l maximum organ dose via all existing exposum pathways (i.e., fish and aquatic invertebrate ingestion, and shoreline exposure) to an age-dependent individual. The values for the various factors considered
- in equations A-3 through A-7 have been taken from Regulatory Guide 1.109 and the Station Offsite Dose Calculation Manual (ODCM) (Reference 2). The specific values used for the usage factor l
(U,,), mixing ratio (M,), bioaccumulation factor (B,), dose factors (D,), transit time (t,), transfer l constant from water to sedunent (K), exposure time for sediment or soil (t ), and shore width factor (W) are provided by the reference sources as summanzed in Table B. The flow rate of the liquid l effluent (F) and the radionuclide activities (Qi) are measured specifically prior to each liquid release.
The values for halflives for radionuclides (T) and their radioactive decay constants (A)i have been taken from Kocher (Reference 3).
The exposure pathways considered in the calculations of total body and maximum organ doses j
resulting from liquid discharges from Seabrook Station have been limited to ingestion of aquatic !
I foods and exposure to shoreline deposits. The dose calculations do not include the ingestion of potable water and irrigated vegetation as potential exposure pathways because the liquid effluents i from the plant are discharged into salt water.
l Table A presents the calculated liquid pathway doses for each calendar quarter and also the total for the year.
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i* i III. Method for Calculatine the Gamma and Beta Air Doses from Noble Gagg i
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i The computer codes AIRAD and AEOLUS 2 were used for the calculation of both the I gamma and beta air doses resulting from noble gases present in gaseous effluents released from i
Seabrook Station. The featwes and use of AEOLUS 2 for the calculation of atmospheric dispersion factors (i.e., Chi /Q factors) from recorded meteorological data (i.e., meteorological data measurements taken during the time of the release) are described in section B.7.3.2 of Seabrook's ODCM. Meteorological dispersion factors concurrent with periods of gas releases are calculated by AEOLUS 2 and used in the gamma and beta air dose calculations performed by AIRAD. AIRAD is consistent with the models presented in Regulatory Guide 1.109, general equations B-4 and B-5. l The values for the dose factors, DF7 and DF/, have been taken from Table B-1 in Regulatory j
Guide 1.109. '
i Table A lists the calculated air doses for each calendar quarter, and the total for the year. 1
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r' IV. Method for Calculatine the Critical Organ Dose Resultine from lodines. Tritium and Particulates with T.,, Greater than 8 Days in Gaseous Releases The computer codes AEOLUS 2 and ATMODOS were used for the calculation of the organ doses resulting from iodines, tritium and particulates with half-lives greater than 8 days present in l
gaseous effluents released from Seabrook Station. The features and use of AEOLUS 2 for the calculation of atmospheric dispersion fisctors (i.e., Chi /Q factors) from recorded meteorological data 1 (i.e., meteorological data measurements taken during the time of the release) are described in section B.7.3.2 of Seabrook's ODCM. Meteorological dispersion factors concurrent with periods of gas l releases were calculated by AEOLUS 2 and used in the dose calculations by ATMODOS. l ATMODOS calculates the organ doses ( i.e., dose to bone, liver, kidney, lung, lower large intestine, total body, and skin) due to the presence of radionuclides other than noble gases in gaseous effluents, and is consistent with the models presented in Appendix C of Regulatory Guide 1.109. The pathways considered in the dose calculations are the ground plane, inhalation, and ingestion of stored
! vegetables, fresh garden vegetables, and milk. The critical organ dose is determined for the offsite l location (e.g., site boundary, nearest resident or farm) of receptor pathways as identified in the most recent annualland use census. The total body dose contributions via the ground plane and inhalation pathways as calculated by ATMODOS have also been included in the total body dose estimates for the special receptor locations inside the site boundary. Regulatory Guide 1.109 equations C-1 j through C-13 are applied in the ATMODOS calculation of the critical organ doses. The input data and assumptions are those provided in Appendix C of the Regulatory Guide, except where site-i specific data and assumptions have been identified in Tables B.7-2 and B.7-3 of Seabrook's ODCM.
l These two ODCM tables provide the options for special conditions, depending on the type of I receptor being evaluated at a specific location, that can be applied in Method II calculations. The receptor type controls the exposure pathways for calculational purposes. The receptor types used in the dose calculations were a resident receptor (which considered the ground plane, inhalation and l vegetable ingestion exposure pathways), a milk receptor (which considered the ground plane, l t
inhalation, vegetable and milk ingestion exposure pathways) and a boundary and radius receptor (both l of which considered the ground plane and inhalation exposure pathways). The resident and milk receptor locations for the various sector were based on the 1998 land use census data for Seabrook l
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Station (Table D). The radius receptor locations wer applied at severd distances in the prevalent downwind sectors to insure that the location of the maximum doses were not overlooked.
Depletion of the plume during transpon is considered by AEOLUS 2 in the calculations of atmospheric dispersion factors (e.g., calculation of[X/Q] ). A shielding factor (Sp) of 0.7 is applied for residential stmetures. The source for the values of the various factors used in Regulatory Guide 1.109 dose equations C-1 through C-13 are summanzed in Table C.
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V. References -
1.
Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purposes of Evaluating Compliance with 10CFR Part 50, Appendix I, Reg. Guide 1.109, Rev 1, Oct.1977.'
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- 2. Station Offsite Dose Calculation Manual, Rev 19.
- 3. Kocher, D.C., Dose Rate Conversion Factors for Exposure to Photons and Electrons, Health Physics, Vol. 45, No. 3, Sept.1983.
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TABLE A (Sheet 1) 1 Seabrook Station j 1998 Annual Radioactive Effluent Relemme Renort i
MaximumW Off-Site Doses and Dose CoirmJtients to Members of the Public Dose (mrem)*
l st - 2nd 3rd 4th Quarter Quarter Quarter Quarter ' Year Liquid Effluents:
TotalBody Dose 5.70E-05 6.90E-05 2.89E-04 2.08E-04 6.23 & O4 (1) (2) (1) (1)
Organ Dose 1.98E-04 333&O4 1.26E-03 7.02E-04 2.49E-03 (3) (4) (4) (4)
Airborne Effluents.
Organ Dose from lodines, 5.96503 736E-03 1.98&O3 3.01E-03 1.83E-02 Tritium. and Particulates (5) (5) (6) (7)
Noble Gases Beta Air 435E-05 236E-04 2.75E-05 4.07E-04 7.14E-04 l (mrad) (8) (9) (9) (10)
Gamma Air ,2.99E-05 8.29E-05 6.74E-05 9.73E-04 1.15E-03 (mrad) (8) (9) (9) (10)
Doses (mrem) at Receptor Locations inside Site Boundary'*:
! Science and Nature Cer.ter (SW,488m):
Beta Air Dose (mrad) 3.92E-08 3.85B-07 134E-08 8.46E-09 4.46E-07 Gamma Air Dose (mrad) 7.41E-09 937E-08 1.99E-08 8.12E-09 1.29E-0'7 Organ Dose (mrem) 4.70E-06 6.03E-06 6.79E-07 1.62E-06 1.30E-05 l (11) (11) (11) (12)
'Ihe " Rocks"(NE/ENE,244m):
Beta Air Dose (mrad) 1.98E-06 5.90E-06 4.22E-06 1.63E-04 1.75E-04 Gamma Air Dose (mrad) 5.89E-07 1.79E-06 2.60E-06 9.73E-05 1.02E-04
. Organ Dose (mrem) 8.44E-05 6.03E-05 1.00E-04 2.04E-04 4.49E-04 (11) (11) (II) (11)
__ Direct Dose From Plant Operation
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e TABLE A (Sheet 2)
Seabrook Station 1998 Annual Radioactive Effluent Release Reoort NOTES:
(a) " Maximum means the largest fraction of corresponding 10CFR50, Appendix I, dose design objective.
(b) The numbered footnotes indicate the age group, organ, and location (compass sector and distance from stack in meters) of the dose receptor, where appropriate. I (1) Adult.
(2) Child.
(3) GI-LLI of an adult.
(4) Bone of a child.
(5) Liver, kidney, lung, GI-LLI, thyroid, and whole body of a child, SW l 130m.
l (6) Liver, kidney, lung, GI-LLI, thyroid, and whole body of a child, W 1320m.
(7) Liver, kidney, lung, GI-LLI, thyroid, and whole body of a child, ENE 2320m.
(8) N 914m.
(9) NW 914m.
(10) NE 2276m.
(1I) Liver, kidney, lung, GI-LLI, thyroid, and whole body of a teen.
(12) Liver, kidney, lung, GI-LLI, thyroid, and whole body of a teen and adult.
(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 10CFR50.
(d) For each special receptor location, the whole body and organ doses calculated for the airborne effluent releases were adjusted by the occupancy factor provided in Seabrook's ODCM (i.e.,0.0014 for the Science and Nature Center and 0.0076 for the Rocks").
(e) Only station sources are considered since there are no other facilities within five miles of Seabrook Station. 1998 data fer the closest off-site environmental TLD locations in each sector (as listed in Table B.4-1 of Seabrook's ODCM) were compared to preoperation data from 1986-1988 for the same I locations. No statistical difference which could be attributed to station sources was identified.
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I TABLE B
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Seabrook Station 1998 Annual Radinactive Effinent R&a=* Reoort Sources of the Values of Factors Used in I.inuid Dose Eoiintions Factor Definition Source U. Usage factor Table B.7-1, Station ODCM l
M., Mixing ratio Section B.7.1, Station ODCM (value=0.1 for aquatic foods and 0.025 for shoreline)
B, Equilitrium bioaccumulation Table A-1, Reg. Guide 1.109 factor Du Dose factor Tables E-11 through E-14, R.G.1.109 t,, Nuclide transit time Section B.7.1, Station ODCM K, Transfer coefficient from water to Reg. Guide 1.109 sediment ts Soilexposure time Table B.7-2, Station ODCM W Shoreline width factor Table A-2, Reg.. Guide 1.109 (value=0.5) 4 l
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TABLE C (Sheet 1)
Seabrook Station 1998 Annual Radioactive EfHnant Relaam Reoort Sources of Values for the Factors Used in Dose Eauntinns for Gaseous Relenes Factor Definition Source
- t. Period of activity buildup in Reg. Guide 1.109 sediment or soil L Nuclide decay constant Kocher(Reference 3)
DFGa Ground plane dose factor Table E-6, Reg. Guide 1.109 IX/OlD Atmospheric dispersion factor r'alaulated by AEOLUS 2 (Mod 5)-
R. Breathing rate Table B.7-3, Station ODCM DFAa. Inhalation dose factor Tables E-7 through E-10, R.G.I.109
- d. Nuclide deposition rate Reg. Guide 1.109 P Soil surface density Table B.7-2, Station ODCM t, Crop, leafy vegetable, or pasture Table B.7-2, Station ODCM grass exposure period tn Average time from crop ha'rvest to Table B.7-2, Station ODCM consumption Y, Agricultural productivity by unit Table B.7-2, Station ODCM -
area r Fraction of deposited activity Table E-15, Reg. Guide 1.109-retained on crops, leafy vegetables, or pasture grass B3 Stable element transfer coefficient Table E-1, Reg. Guide 1.109 from soil to produce, leafy vegetable, or pasture grass o Fractional equilibrium ratio Reg. Guide 1.109 -
H- Ambient absolute humidity Table B.7-2, Station ODCM F, Stable element transfer coefficient Tables E-1 and E-2, R.G.1.109 from feed to milk to Average time from feed to milk to Reg. Guide 1.109 consumption f, Fraction of the year that animals Table B.7-2, Station ODCM graze on pasture c:sserurrva.wro r.
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TABLE C (Sheet 2)
Seabrook Station 1998 Annual Radioactive Effluent Release Reoort I Factor Definition Source f, Fraction of animal daily feed that . Table B.7-2, Station ODCM is pasture grass F, . Stable element transfer coefficient Table E-1, Reg. Guide 1.109 from feed to meat t, Average time from meat animal Table E-15, Reg. Guide 1.109 slaughter to consumption DFL Ingestion dose factor Tables E-11 through E-14, R.G.I.109 U, Annualintake of produce Table B.7-3, Station ODCM U,ia Annualintake of milk Table B.7-3, Station ODCM U,F Annual intake of meat . Table B.7-3, Station ODCM ,
U,' Annualintake ofleafy vegetables Table B.7-3, Station ODCM l l
f, Ingestion rate fractions for garden Reg. Guide 1.109 produce f, Ingestion rate fractions for garden Reg. Guide 1.109 .
leafy vegetables A,, Rate constant for activity removal Table E-15, Reg. Guide 1.109-from plant and leaf surfaces by weathering Q, Animal consumption rate Table E-3, Reg. Gilide 1.109
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TABLE D -
.(Sheet 1) l Seabrook Station 1998 Annual Rndinactive Effluent Relanca Reoort Receptor Locations
- for Seabrook Station Milk himals Nearest Nearest within 5 Mile Resident Garden Radius Sector mile (km) mile (km) mile (km) '
N ---
2.76 (4.44) --
NNE 1.89 (3.04) 1.95 (3.14) ---
NE 1.82 (2.93) 2.78 (4.47) --
4 ENE 1.44 (2.32) -- -
E 1.60 (2.57) --- --
ESE 1.70 (2.74) -- ---
SE 1.46 (2.35) -- ---
SSE -- --- ---
S 0.75 (1.21) 0.75 (1.21) ---
SSW 0.69 (l.I 1) 0.76 (1.22) ---
SW 0.70 (1.13) 1.09 (l.75) 3.26 (5.25)
WSW --
1.46 (2.35) --
W 0.82 (l.32) 0.83 (1.34) ---
WNW 0.69 (1.1 !) 0.94 (l.51) 2.94 (4.73) 3.80 (6.12) 4.73 (7.61)
NW ---
0.79 (l.27) 4.30 (6.92)
NNW 0.63 (l.01) 0.75 (1.21) 3.30 (5.31)
- Locations based on 1998 Land Use Census, cssenwr98.WPD