ML061250476

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Annual Radioactive Effluent Release Report for 2005
ML061250476
Person / Time
Site: Sequoyah  
Issue date: 12/31/2005
From:
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML061250476 (67)
v • d • e


Text

ENCLOSURE 1 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT SEQUOYAH NUCLEAR PLANT 2005

SUPPLEMENTAL INFORMATION REGULATORY LIMITS A. Gaseous Effluents

1.

Dose rates due to radioactivity released in gaseous effluents from the site to areas at and beyond the unrestricted area boundary shall be limited to the following:

a. Noble gases:

- Less than or equal to 500 mrem/year to the total body.

- Less than or equal to 3000 mrem/year to the skin.

b. Iodine-131, Iodine-133, tritium, and all radionuclides in particulate form with half-lives greater than eight days:

Less than or equal to 1500 mrem/year to any organ.

2.

Air dose due to noble gases released in gaseous effluents to areas at and beyond the unrestricted area boundary shall be limited to the following:

a. Less than or equal to 5 mrad for gamma radiation and less than or equal to 10 mrad for beta radiation during any calendar quarter.
b. Less than or equal to 10 mrad for gamma radiation and less than or equal to 20 mrad for beta radiation during any calendar year.
3.

Dose to a member of the public from lodine-131, lodine-133, tritium, and radionuclides in particulate form with half-lives greater than eight days in gaseous effluents released to areas at and beyond the unrestricted area boundary shall be limited to the following:

a. Less than or equal to 7.5 mrem to any organ during any calendar quarter.
b. Less than or equal to 15 mrem to any organ during any calendar year.

B.

Liquid Effluents

1.

The annual average concentration of radioactivity released in liquid effluents to unrestricted areas shall be limited to the concentrations specified in Title 10 of the Code of Federal Regulations, Part 20 1E1-1

SUPPLEMENTAL INFORMATION (Standards for Protection Against Radiation), Appendix B, Table 2, Column 2, for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2.0 E-04 microcuries/milliliter (slCi/ml) total activity.

2.

The dose or dose commitment to a member of the public from radioactivity in liquid effluents released to unrestricted areas shall be limited to:

a. Less than or equal to 1.5 mrem to the total body and less than or equal to 5 mrem to any organ during any calendar quarter.
b. Less than or equal to 3 mrem to the total body and less than or equal to 10 mrem to any organ during any calendar year.

II.

EFFLUENT CONCENTRATION LIMITS A. Liquids

  • 1. The Effluent Concentration Limits (ECL) for liquids are those listed in 10 CFR 20, Appendix B, Table 2, Column 2. For dissolved and entrained gases, the ECL of 2.OE-04 [LCi/ml is applied. This ECL is based on the Xe-135 concentration in air (submersion dose) converted to an equivalent concentration in water as discussed in the International Commission on Radiological Protection (ICRP), Publication 2.
  • These values are used as applicable limits for liquid and gaseous effluents.

B. Gaseous

a. Noble gas dose rate at the unrestricted area boundary:

- Less than or equal to 500 mrem/year to the total body.

- Less than or equal to 3000 mrem/year to skin.

b. Iodine-131, Iodine-133, tritium, and particulates with half-lives greater than eight days dose rate at the unrestricted area boundary:

Less than or equal to 1500 mrem/year to any organ.

  • These values are used as applicable limits for liquid and gaseous effluents.

E1-2

SUPPLEMENTAL INFORMATION Ill.

AVERAGE ENERGY S'equoyah's ODCM limits the dose equivalent rates due to the release of noble.

gases to less than or equal to 500 mrem/year to the total body and less than or equal to 3000 mrem/year to the skin. The use of dose rate is in accordance with NUREG-0133, "Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants". Since the release rate is not used for effluent control, the average energy discussed in Regulatory Guide 1.21 (used for release rate control) is not included in this report.

IV.

MEASUREMENTS AND APPROXIMATIONS OF TOTAL RADIOACTIVITY NOTE:

Every effort is made to ensure that effluent releases from Sequoyah are conducted such that all ODCM Lower Limit of Detection (LLD) values are met. Whenever an analysis does not identify a radioisotope, an "0.OOE-01 Ci" is recorded for the release. This does not necessarily mean that no activity was released for that particular radionuclide, but that the concentration was below the ODCM and analysis LLD. Refer to Tables A and B for estimates of these typical LLD values.

A.

Fission and Activation Gases Airborne effluent gaseous activity is continuously monitored and recorded.

Additional grab samples from the shield building, auxiliary building, service building, and condenser vacuum exhausts are taken and analyzed at least monthly to determine the quantity of noble gas activity released for the month based on the average vent flow rates recorded for the sample period. Also, noble gas samples are collected and evaluated for the shield and auxiliary buildings following startup, shutdown, or rated thermal power change exceeding 15 percent within one hour (sampling is only required if the dose equivalent 1-131 concentration in the primary coolant or the noble gas activity:

monitor shows that the containment activity has increased more than a factor of 3).

The quantity of noble gases released through the shield and auxiliary buiiding exhausts due to purging or venting of containment and releases of waste gas decay tanks are also determined.

The total noble gas activity released for the month is then determined by summing of the activity released from each vent for the sampling periods.

B. Iodines and Particulates Iodine and particulate activity is continuously sampled. Charcoal and particulate samples are taken from the shield and auxiliary building exhausts and analyzed at least weekly to determine the total activity released from the plant based on the average vent flow rates recorded for sampling period.

El-3

SUPPLEMENTAL INFORMATION Also, particulate and charcoal samples are taken from the auxiliary and shield building exhausts once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> for 2 days following startup, shutdown, or a rated thermal power change exceeding 15 percent within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. The quantity of iodine and particulate released from each vent during each sampling period is then determined using the average vent flow rates recorded for the sampling period and activity concentration.

The total particulate and iodine activity released for the month is then determined by summing all activity released from the shield and auxiliary building exhausts for the sampling periods.

C. Liquid Effluents Batch (Radwaste and during periods of primary to secondary leakage, condensate regenerants to cooling tower blowdown)

Total gamma isotopic activity concentrations are determined on each batch of liquid effluent prior to release. The total activity of a released batch is determined by summing each nuclide's concentration and multiplying by the total volume discharged. The total activity released during a month is then determined by summing the activity content of each batch discharged during the month.

Continuous Releases and Periodic Continuous Releases (Condensate regenerants, turbine building sump, and steam generator blowdown)

Total gamma isotopic activity concentration is determined daily on a composite sample from the condensate system and turbine building sump and weekly for steam generator blowdown. The total activity of the continuous release is determined by summing each nuclide's concentration and multiplying by the total volume discharged. The total activity released during the month is then determined by summing the activity content of each daily and weekly composite for the month.

V. BATCH Value 1st 2nd Half Half Units A. Liquid (Radwaste only)

1. Number of releases 103 47 Each
2. Total time period of releases 17357 7180 Minutes
3. Maximum time period of release 512 315 Minutes
4. Average time period of releases 168.51 152.77 Minutes
5. Minimum time period for release 25.0 40 Minutes
6. Average dilution stream flow during 32844.5 28976.5 CFS release periods E1-4

SUPPLEMENTAL INFORMATION B. Gaseous (Batches only, containment purges, containment vents, and waste decay tanks)

1. Number of releases 130 77 Each
2. Total time period of releases 43119 26981 Minutes
3. Maximum time period for release 5150 1205 Minutes
4. Average time period for releases 331.69 350.40 Minutes
5. Minimum time period for release 45.0 30.0 Minutes VI. ABNORMAL RELEASES Value 1st 2nd Half Half Units A. Liquid Number of Releases 0

0 Total Activity Released 0.OOE-01 0.OOE-01 C(i B. Gaseous Number of Releases 0

0 Total Activity Released 0.OOE-01 0.OOE-01 Ci E1-5

LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES A.

Fission and Activation Products 1St Qtr 2nd Qtr 3rd Qtr 4th Qtr Unit

%Error

1. Total Released
2. Average diluted concentration during period
3.

Percent of Applicable Limit Curies 4.95E-02 1.97E-01 1.99E-02 2.20E-02 1.38E-07 1.16E-08 1.29E-08 18%M, pCilml 2.95E-08 B.

rritium

1. Total Released
2.

Average diluted concentration during period

3. Percent of Applicable Limit Curies 4.47E+02 7.40E+02 3.85E+01 2.55E+02

[tCi/ml 2.67E-04 5.17E-04 2.25E-05 1.50E-04 18%/;

%/

C.

Dissolved and Entrained Gases

1. Total Released
2. Average diluted concentration during period
3. Percent of Applicable Limit Curies 5.77E-03 6.28E-01 6.31E-03 5.91E-02 pCi/ml 3.44E-09 4.39E-07 3.69E-09 3.47E-08 1.72E-03 2.20E-01 1.85E-03 1.74E-02 39 0 D.

Gross Alpha

1. Total Released Curies O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 E.

Volume of Waste Released F.

Volume of Dilution Water for Period Liters 5.74E+07 4.11 E+07 5.06E+07 5.27E+07 40%

4 OXj 1.62E+09 1.39E+09 1.66E+09 1.65E+09 Liters

  • Applicable limits are expressed in terms of dose. See Tables 1 thru 4.

E1-6

LIQUID EFFLUENTS - TOTAL PLANT DISCHARGE G. !uclide Summary (Note: Refer to Table A for ODCM nuclides reported as 0.OOE-01)

Required by ODCM/Others Fission and Activation Products Nuclide

1. Silver-110M
2.

Cerium-144

3.

Cobalt-57

4.

Cobalt-58

5. Cobalt-60
6.

Chromium-51

.7. Cesium-134

8.

Cesium-1 37

9.

Cesium-138

10. Iron-55
11.

Iron-59

12.

Iodine-131

13.

Iodine-133

14.

Iodine-134

15.

Manganese-54

16.

Sodium-24

17. Niobium-95
18.

Antimony-124

19. Antimony-125
20.

Strontium-91

21. Technetium-99M
22.

Tellurium-132

23. Zinc-65
24. Zirconium-95 Total for Period Unit Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci C

ci Ci Cl Continuous Mode Batch Mode Quarter Quarter Quarter Quarter ts tnd 2

st 2nd 0.00E-01 0.OOE-01 1.01 E-03 3.15E-03 0.00E-01 0.00E-01 3.19E-05 0.00E-01 0.00E-01 0.00E-01 3.37E-04 5.34E-04 0.00E-01 0.00E-01 3.10E-02 1.OOE-01 0.OOE-01 0.00E-01 5.92E-03 1.18E-02 0.00E-01 0.00E-01 3.61E-04 8.84E-03 0.00E-01 0.OOE-01 2.82E-04 0.00E-01 0.00E-01 0.OOE-01 7.74E-04 2.43E-05 0.00E-01 0.OOE-01 0.OOE-01 2.17E-05 0.00E-01 0.00E-01 7.29E-03 2.88E-02 0.00E-01 0.OOE-01 3.46E-04 2.18E-03 0.00E-01 0.00E-01 1.07E-03 1.98E-04 0.00E-01 0.OOE-01 0.OOE-01 2.33E-05 0.00E-01 0.OOE-01 0.00E-01 6.17E-05 O.OOE-01 O.OOE-01 1.22E-04 1.22E-03 0.00E-01 0.00E-01 0.00E-01 7.84E-07 0.00E-01 0.00E-01 1.18E-04 2.03E-03 0.00E-01 0.00E-01 0.OOE-01 4.05E-03 0.00E-01 0.OOE-01 7.98E-04 3.33E-02 0.00E-01 0.00E-01 9.92E-06 0.00E-01 0.00E-01 0.OOE-01 3.99E-06 0.00E-01 0.00E-01 0.00E-01 0.00E-01 8.95E-06 0.00E-01 0.00E-01 0.00E-01 1.13E-04 0.00E-01 0.00E-01 0.00E-01 8.32E-04 0.00E-01 0.00E-01 4.95E-02 1.97E-01 E1-7

LIQUID EFFLUENTS - TOTAL PLANT DISCHARGE G. Nuclide Summarv (Note: Refer to Table A for ODCM nuclides reported as O.OOE-01)

Required by ODCMlOthers Continuous Mode Quarter Quarter

,St 2nd Batch Mode Quarter Quarter 1 5 2F Nuclide Unit Tritium H-3 ci 1.60E-01 9.69E-02 4.47E+02 7.40E+02 1.

2.

3.

4.

5.

Dissolved and Entrained Noble Gases Argon-41 Ci Krypton-85M Ci

>:enon-131 M Ci Xenon-133

)enon-133M Ci Ci Ci Ci O.OOE-01 O.OOE-01 2.93E-04 7.51 E-04 O.OE-01 O.OOE-01 7.77E-08 2.09E-05 O.OOE-01 O.OOE-01 O.OOE-01 1.05E-02 O.OOE-01 O.0OE-01 5.47E-03 6.12E-01 O.OOE-01 O.OOE-01 O.OOE-01 3.51 E-03 O.OOE-01 O.OOE-01 O.OOE-01 1.03E-03 O.OOE-01 O.OOE-01 5.77E-03 6.28E-01

6.

Xenon-135 Total for Period E1-8

LIQUID EFFLUENTS - TOTAL PLANT DISCHARGE G.

Nuclide Summary (Note: Refer to Table A for ODCM nuclides reported as 0.OOE-01)

Required by ODCM/Others Fission and ActiVation Products Continuous Mode Batch Mode Quarter Quarter Quarter Quarter Nuclide Unit 3rd 4th 3 rd 4tn

1. Silver-11OM Ci 0.00E-01 0.00E-01 7.67E-04 4.77E-04
2. Cobalt-57 Ci 0.OOE-01 0.OOE-01 1.02E-04 1.19E-04
3. %obalt-58 Ci 0.OOE-01 O.OOE-01 1.08E-02 7.36E-03
4.

Cobalt-60 Ci 0.OOE-01 0.00E-01 1.66E-03 2.86E-03

5.

Chromium-51 Ci 0.00E-01 0.OOE-01 5.96E-05 8.35E-05

6. Cesium-134 Ci 0.00E-01 0.OOE-01 0.0OE-01 7.62E-05
7. Cesium-137 Ci 0.00E-01 0.00E-01 0.00E-01 4.03E-04
8.

Iron-55 Ci 0.00E-01 0.00E-01 2.26E-03 3.60E-03

9.

Iron-59 Ci 0.00E-01 0.00E-01 6.26E-06 0.OOE-01

10. Iodine-131 Ci 0.00E-01 0.OOE-01 9.03E-06 0.00E-01
11. Manganese-54 Ci 0.00E-01 0.OOE-01 6.29E-05 1.32E-04
12. Sodium-24 Ci 0.00E-01 0.OOE-01 0.00E-01 1.31E-06
13. Niobium-95 Ci 0.00E-01 0.OOE-01 3.56E-05 5.30E-05
14. Antimony-124 Ci 0.OOE-01 0.OOE-01 2.52E-04 2.48E-04
15. Antimony-125 Ci 0.00E-01 0.00E-01 3.86E-03 6.45E-03
16. Zinc-65 Ci 0.00E-01 0.OOE-01 1.04E-04 1.10E-04
17. Zirconium-95 Ci 0.00E-01 0.OOE-01 8.77E-06 0.00E-01 Total for Period Ci O.OOE-01 O.OOE-01 1.99E-02 2.20E-02 E1-9

LIQUID EFFLUENTS - TOTAL PLANT DISCHARGE G. Nuclide Summary (Note: Refer to Table A for ODCM nuclides reported as O.OOE-01)

REquired by ODCM/Others Continuous Mode Quarter Quarter 3 rd 4 th Batch Mode Quarter Quarter 3rd 4 th Nuclide Unit H-3 ci 1.40E-01 2.08E-01 3.84E+01 2.55E+02 Dissolved and Entrained Noble Gases

1.

Kr-85 Ci

2.

Xe-131M Ci

3.

>:enon-133 Ci

4.

Xenon-133M Ci

5.

Xenon-135 Ci O.OOE-01 O.OOE-01 0.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 0.OOE-01 O.OOE-01 6.30E-03 0.OOE-01 5.97E-06 1.83E-03 1.50E-03 5.57E-02 5.33E-05 1.15E-05 Total for Period ci O.OOE-01 O.OOE-01 6.31E-03 5.91E-02 El-10

TABLE A LIQUID "TYPICAL LLD" EVALUATION11 )

Nuclide Manganese-54 Cobalt-58 Iron-59 Cobalt-60 Zinc-65 Molybdenum-99 Cesium-134 Cesium-137 Ceri jm-141 Ceri im-144 lodine-131 Krypton-87 Krypton-88 Xenon-1 33 Xenon-133m Xenon-135 Xenon-138 ODCM LLD 5.0E-07 5.OE-07 5.OE-07 5.OE-07 5.OE-07 5.OE-07 5.OE-07 5.OE-07 5.OE-07 5.OE-06 1.OE-06.

1.OE-05 1.OE-05 1.OE-05 1.OE-05 1.OE-05 1.OE-05 1 hr 3.36E-08 2.53E-08 5.26E-08 4.63E-08 2.95E-08 1.55E-07 1.91 E-08 3.87E-08 2.80E-08 1.11E-07 2.28E-08 1.16E-07 9.95E-08 4.19E-08 1.42E-07 2.06E-08 8.37E-06 Cat(2) 8 hr 3.36E-08 2.54E-08 5.29E-08 4.63E-08 2.95E-08 1.67E-07 1.91E-08 3.87E-08 2.81E-08 1.12E-07 2.34E-08 5.25E-07 5.49E-07 4.36E-08 1.55E-07 3.50E-08 (3) 32 hr 3.37E-08 2.56E-08 5.37E-08 4.64E-08 2.96E-08 2.15E-07 1.92E-08 3.87E-08 2.87E-08 1.12E-07 2.55E-08 (3)

(3) 4.98E-08 2.13E-07 2.17E-07 (3)

Typical LLD 1.2E-06 2.OE-08 3.8E-08/1.4E-08 1.3E-08 ime.

Nuc ide Tritiuam ODCM LLD I.OE-05 Gross Alpha 1.OE-07 Strontium-89/90 5.OE-08 Iron-55 1.OE-06 NOrES: (1) LLD values are in pCi/ml.

(2) Ot is the time between sample collection and counting t (3) T 1% too short.

E1-11

GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES (GROUND LEVEL RELEASES)

Summation of All Relea:ses A. Noble Gases

1. Total Released
2. Average Release Rate of Period
3. Percent of Limit B. lodines
1. Total Iodine-131
2. Average Release Rate for Period
3. Percent of Limit Unit Ci I tpCi/sec Ci ptCi/sec 1 St Qtr 9.03E+00 1.16E+01 6.53.E-05 8.40E-06 2 nd Qtr 6.76E+00 8.60E-01 8.03E-05 1.02E-05 3 rd Qtr 5.41 E+00 6.80E-01 9.46E-06 1.19E-06 4 th Qtr 7.77E+01 9.77E+01 O.OOE-01 0.OOE-01

%Errcr 11%

13%

C. Particulates

1. Particulates with
,alf-lives >8 days
2. Average Release Rate for Period
3. Percent of Limit
4.

Gross Alpha Radio-activity D. Tritium

1. Total Release
2. Average Release Rate for Period
3. Percent of Limit Ci ptCi/sec Ci Ci pCi/sec O.OOE-01 O.OOE-01 O.OOE-01 1.92E+01 2.48E-01 8.55E-06 1.09E-06 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 16%

O.OOE-01 O.OOE-01 O.OOE-01 2.65E+01 3.37E+00 1.15+01 1.45E+00 1.21E+01 1.52E+00 15%/c

  • Applicable limits are expressed in terms of dose. See Tables 5 thru 8.

E1-12

GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES (GROUND LEVEL RELEASES)

1. N Dble Gases Required by ODCM/Others 1.

2.

3.

4.

5.

6.

7.

8.

Nuclide Krypton-85M IKrypton-88 Xenon-133M Xenon-135 Krypton-85

Kenon-131M Argon41 Xenon-1 33 Total for Period Unit Ci Ci Ci Ci Ci Ci Ci Ci Ci Continuous Mode Quarter Quarter 1st 2nd O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.0OE-01 O.OE-01 O.OOE-01 O.OE-01 O.OOE-01 0.00E-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 0.OOE-01 0.OOE-01 Batch Mode Quarter Quarter
  • 1st 2nd 8.76E-05 O.OOE-01 O.OOE-01 7.10E-04 1.97E-02 1.44E-02 1.15E-01 5.83E-02 2.12E-01 1.07E-01 5.57E-02 1.46E-01 4.15E+00 1.77E+00 4.48E+00 4.66E+00 9.03E+00 6.76E+00
2.

'lodines Iodine-133 Iodine-131 Total for Period

3.

Particulates

1.

Bromine-82

2.

Cobalt-58 Total for Period Ci Ci Ci Ci Ci 1.60E-04 6.53E-05 2.25E-04 O.OOE-01 O.OOE-01 0.00E-01 7.86E-05 8.03E-05 S.59E-04 4.97E-06 8.55E-06 1.35E-05 O.OOE-01 O.OOE-01 0.OOE-01 O.OE-01 O.OOE-01 0.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 0.OOE-01

4.

Tritium

- Total for Period Ci Ci 1.60E+01 2.58E+01 3.23E+00 6.52E-01 1.60E+01 2.58E+01 3.23E+00 6.52E-01 NOTE: Refer to Table B for ODCM nuclides reported as O.OOE-01.

El-13

GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES (GROUND LEVEL RELEASES)

1.

Noble Gases Required by ODCM/Others Nuclide

1.

Krypton-87

2.

Krypton-88

3.

Krypton-85M

4.

Xenon-133M

5.

Xenon-135

6.

Xenon-131M

7.

Argon-41

8.

Krypton-85

9.

Xenon-1 33 Total for Period Unit Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Continuous Mode Quarter Quarter 3rd 4th 0.OOE-01 O.OOE-01 O.OOE-01 0.00E-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 7.33E+01 O.OOE-01 7.33E+01 Batch Mode Quarter Quarter 3rd 4th 1.32E-03 O.OOE-01 O.OOE-01 5.42E-04 O.OOE-01 9.69E-04 3.18E-02 1.84E-02 6.52E-02 3.50E-02 1.41E-01 1.10E-01 1.31E+00 3.31 E-01 3.69E-01 4.76E-01 3.49E+00 3.37E+00 5.41E+00 4.34E+00

2.

Iodines

1.

lodine-131 Total for Period

3.

Particulates Ci Ci 9.46E-06 9.46E-06 O.OOE-01 0.OOE-01 O.OOE-01 O.OOE-01 O.OOE-01 0.00E-01 Total for Period

4.

Tritium Total for Period Ci Ci Ci Ci 0.OOE-01 0.OOE-01 0.OOE-01 0.OOE-01 1.07E+01 1.17E+01 8.19E-01

.3.66E-01 1.07E+01 1.17E+01 8.19E-01 3.66E-01 NOTE.: Refer to Table B for ODCM nuclides reported as O.OOE-01.

E1-14

TABLE B GASEOUS "TYPICAL" LLD EVALUATION")

Noble Gas ct(2)

Nuclide ODCM LLD 1 hr 1.5 hr Krypton-87 1.0E-04 2.08E-06 2.73E-06 Krypton-88 1.OE-04 1.61 E-06 1.81 E-06 Xenon-133 1.OE-04 6.61 E-07 6.63E-07 Xenon-133m 1.0E-04 2.34E-06 2.35E-06 Xenon-135 1.OE-04 3.43E-07 3.56E-07 Xenon-138 1.0E-04 1.40E-04 6.10E-04 Particulate Sam let 3) 1 hr 24 hr 7.0 da Manganese-54 1.0E-10 7.47E-12 3.12E-13 4.48E-14 Cobalt-58 1.0E-10 5.62E-12 2.35E-13 3.46E-14 Iron-59 1.0E-10 1.20E-11 5.02E-13 7.49E-14 Coball-60 1.0E-10 1.07E-11 4.46E-13 6.38E-14 Zinc-65 1.0E-10 6.71E-12 2.80E-13 4.03E-14 Molyb enum-99 1.OE-10 3.43E-1 1 1.61E-12 4.70E-13 Cesium-134 1.OE-10 4.25E-12 1.77E-13 2.54E-14 Cesium-137 1.OE-10 8.48E-12 3.54E-13 5.05E-14 Ceriurn-141 1.0E-10 5.10E-12 2.15E-13 3.26E-14 Ceriurn-144 1.0E-10 2.01E-11 8.33E-13 1.20E-13 Iodine-131 1.0E-10 4.76E-12 2.07E-13 3.77E-14 Charcoal Sample lodine-131 1.0E-11 7.25E-12 3.15E-13 5.74E-14 (1) LL) values are in iCi/ml.

(2) Ot is the time between sample collection and counting time.

(3) LLD based on sample time + 30 min. sample to analysis.

E1-15

TABLE B GASEOUS "TYPICAL" LLD EVALUATION(')

Nuclide 00CM LLD Typical LLD Tritiurn 1.OE-06 1.OE-11 Gross Alpha 1.OE-11 1.5E-14 Strontium-89 1.OE-11 1.OE-14 Strontium-90 1.OE-11 1.OE-15 NOTES: (1)LLD values are in JACi/cc.

(2) Ot for noble gases is the time from sampling to analysis.

Ot for charcoal and particulate samples is the midpoint of sampling to analysis.

El -16

SOLID WASTE (RADIOACTIVE SHIPMENTS)

A.

Solid Waste Shipped Offsite for Burial or Disposal (not Irradiated Fuel) 12 Month Est. Tot.

1. Type of Waste Unit Period Error %
a. Spent Resins, Filter Sludges, Evaporator m3 6.81E+00

+1.00E-02 Bottoms, etc.

Ci 2.20E+02

+5.00E+00

b. Dry Active Waste, Compressible Waste m3 2.87E+01

+1.OOE-01 Contaminated Equipment, etc.

Ci 1.67E+00

+5.00E-02

c. Irradiated Components, Control m3 None N/A-Rods, etc.

Ci None N/A

d. Other: Mechanical Filters m3 3.41E+00

+1.00E-02 Ci 4.13E+01

+1.00E+00

2. Estimate of Maior Nuclide Comoosition (by type of waste)
a. Spent resins, filter sludges, evaporator bottoms, etc. (nuclides determined by measurement)

Curies Percent

1.

Hydrogen-3 4.87E-02 0.02

2.

Carbon-14 7.18E-01 0.33

3.

Manganese-54 2.89E+00 1.32

4.

Iron-55 2.47E+01 11.25

5.

Cobalt-57 7:12E-01 0.32

6.

Cobalt-58 3.30E+00 1.50

7.

Nickel-59 1.47E+00 0.67

8.

Cobalt-60 4.75E+01 21.63

9.

Nickel-63 1.17E+02 53.38

10. Zinc-65 1.87E-01 0.09
11. Strontium-89 1.12E-03 0.00
12. Strontium-90 4.54E-02 0.02
13. Silver-108m 4.22E-02 0.02 14 Silver-110m 2.01 E+00 0.91
15. Antimony-125 1.02E+00 0.47
16. Cesium-134 3.86E+00 1.76
17. Cesium-137 1.38E+01 6.29
18. Cerium-144 5.51 E-03 0.00
19. Plutonium-238 8.53E-04 0.00
20. Plutonium-239/240 3.92E-04 0.00
21.

Plutonium-241 2.59E-02 0.01

22. Americium-241 4.06E-04 0.00
23.

Curium-242 1.17E-04 0.00

24.

Curium-243/244 2.70E-03 0.00 E1-17

SOLID WASTE (RADIOACTIVE SHIPMENTS)

2. Estimate of Malor Nuclide Composition (by type of waste) (Cont.)
b. Dry active waste, compressible waste, contaminated equipment, etc. (nuclides determined by estimate)

Curies Percent

1.

Carbon-14 7.52E-04 0.05

2.

Chromium-51 3.13E-02 1.87 Manganese-54 2.01 E-02 1.20 Z.

Iron-55 4.29E-01 25.70

5.

Cobalt-57 5.78E-04 0.04 6i.

Cobalt-58 1.69E-01 10.09 7'.

Iron-59 2.13E-03 0.13

8.

Cobalt-60 8.05E-01 48.20

9.

Nickel-63 7.34E-02 4.39

0. Zinc-65 3.61E-04 0.02
  • 1. Zirconium-95 4.73E-02 2.83

'12.

Niobium-95 7.18E-02 4.30

'I3. Silver-110m 1.56E-03 0.09

'14.

Tin-113 1.86E-03 0.11

  • 15. Antimony-1 25 4.88E-03 0.29
16.

Cesium-134 3.33E-04 0.02

17. Cesium-137 7.32E-03 0.44

'I.

Cerium-144 7.14E-04 0.04

19. Plutonium-238 4.90E-05 0.00
20. Plutonium-239/240 6.44E-05 0.00
21.

Plutonium-241

-3.00E-03 0.18

22. Americium-241 6.02E-05 0.00
23. Plutonium-243/244 8.41 E-05 0.01
c. Irradiated Components Curies Percent None N/A N/A El -18
2. Estimate of Major Nuclide Composition (by type of waste) (Cont.)
d.

Other: Mechanical Filters Curies Pei-cent Hydrogen-3 1.97E-02 0.05

2.

Carbon-14 7.46E-01 1.81 J.

Chromium-51 5.62E-06 0.00

4.

Manganese-54 1.95E-01 0.47 Iron-55 1.97E+01 47.67

6.

Cobalt-57 2.98E-02 0.07

7.

Cobalt-58 5.25E-01 1.27

8.

Iron-59 1.37E-03 O.CO0

9.

Nickel-59 1.01E-02 0.02

10.

Cobalt-60 2.20E+00 5.:.2

11.

Nickel-63 1.38E+00 3.$;4

  • 12. Zinc-65 2.25E-02 0.C15
  • 13.

Strontium-89 1.25E-05 0.00

'14.

Zirconium-95 8.62E-03 0.02

15.

Niobium-95 1.12E-02 0.03

16. Technetium-99 1.20E-03 0.00
17.

Ruthenium-103 6.52E-07 0.0

18.

Silver-l1 Om 1.23E-01 0.30

19.

Tin-113 5.66E-03 0.(i1

20.

Iodine-131 1.50E-19 0.(0

21. Antimony-124 3.64E-05 0.(0
22. Antimony-125 2.49E-02 0.06
23. Cesium-134.

5.11E+00

'12.36

24.

Cesium-136 3.56E-13 0.00

25.

Cesium-137 1.12E+01 27.10

26.

Barium/Lanthanum-140 1.80E-13 0.(0

27.

Cerium-144 8.96E-03 0.02

28.

Plutonium-241 3.52E-03 0.01

29.

Curium-242 9.44E-05 0.10

30.

Curium-243/244 1.70E-04 0.00 El-19

SOLID WASTE (RADIOACTIVE SHIPMENTS)

3. Solid Waste Disposition
a. spent resins, filter sludges, evaporator bottoms, etc.

or of Shipments Type Quantity Mode of Transportation Destination 2

Type B Motor Freight Chem-Nuclear

_Barnwell, SC

b. Dry active waste, compressible waste, contaminated equipment, etc.

Number of Shipments Type Quantity Mode of Transportation Destination 37*

A-LSA Motor Freight Envirocare near Clive, Utah 1

A-LSA Motor Freight Chem-Nuclear Barnwell, SC

  • 37 of the shipments were shipped by a waste processor.
c. Irradiated components, control rods, etc.

lI aer of Shipments l Type Quantity l Mode of Transportation l Destination l

None N/A N/A N/A

d. Other: Mechanical Filters and Tank Residue Nr of Shipments Type Quantity Mode of Transportation Destination P

B-LSA 11 Motor Freight Chem-Nuclear Barnwell, SC

4. Irradiated Fuel Shipments (Disposition)

I Number of Shipments I Type Quantity I Mode of Transportation I

- Destination I.

None N/A N/A N/A

5. Solidification of Waste Was solidification performed? No If yes, solidification media:

El -20

Independent Spent Storage Installation SQN implemented use of an independent spent storage installation (ISFSI) on July13, 2004.

The 1ISFSI is located on site, within the protected area and is designed to hold 90 spent fuel canisters. The ISFSI is considered part of plant operations for the purposes of the radiological environmental monitoring program.

SQN '1SFSI TS 5.4a states "The HI-Storm 100 Cask system does not create any radioactive material or have any radioactive waste treatment systems. Therefore, specific operating procedures for the control of radioactive effluents are not required. Specification 3.1.1, Multi-Purpcse Canister (MPC) provides assurances that there are no radioactive effluents from spent fuel storage canister."

The EPA limits for the total dose to the public in the vicinity of a nuclear power plant, estab ished in the Environmental Dose Standard of 40 CFR 190, are as follows:

Total Body

=25 mrem/year Thyroid

=75 mrem/year Any other organ

=25 mrem/year The SQN ISFSI is considered part of the SQN site and part of plant operations and any radioactive release is included in this report as total site releases. These releases are within 40 CFR 190 limits and 10 CFR 72.104 limits.

E1-21

ENCLOSURE 2 RADIOLOGICAL IMPACT ASSESSMENT REPORT SEQUOYAH NUCLEAR PLANT JANUARY - DECEMBER 2005

INTRODUCTION Potenlial doses to maximum individuals and the population around Sequoyah Nuclear Plant (SQN) are calculated for each quarter as required in Section 5.2 of the Offsite Dose Calculation Manual (ODCM). Measured plant releases for the reporting period are used to estimate these doses. Dispersion of radioactive effluents in the environment is estimated using meteorological data and riverflow data measured during the period. In this report, the doses resulting from releases are described and compared to limits established for SQN.

DOSE LIMITS The ODCM specifies limits for the release of radioactive effluents, as well as limits for doses to the general public from the release of radioactive effluents. These limits are set well below the Technical Specification limits which govern the concentrations of radioactivity and doses permissible in unrestricted areas. This ensures that radioactive effluent releases are "As Low As Reasonably Achievable."

The limits for doses in unrestricted areas from airborne noble gases releases are:

Less than or equal to 5 mrad per quarter and 10 mrad per year (per reactor unit) for gamma radiation,

- and -

Less than or equal to 10 mrad per quarter and 20 mrad per year (per reactor unit) for beta radiation.

The limit for the dose to a member of the general public in an unrestricted area from iodines and particulates released in airborne effluents is:

Less than or equal to 7.5 mrem per quarter and 15 mrem per year (per reactor unit) to any organ.

The limit for doses to a member of the general public from radioactive material.in liquid effluents released to unrestricted areas is:'

Less than or equal to 1.5 mrem per quarter and 3 mrem per year (per reactor unit) to the total body,

- and -

Less than or equal to 5 mrem per quarter and 10 mrem per year (per reactor unit) to any organ The EPA limits for total dose to the public in the vicinity of a nuclear power plant, established in the Environmental Dose Standard of 40 CFR 190 are:

Less than or equal to 25 mrem per year to the total body, Less than or equal to 75 mrem per year to the thyroid,

- and -

Less than or equal to 25 mrem per year to any other organ.

E2-1

DOSE CALCULATIONS Estimated doses to the public are determined using computer models: Gaseous Effluent Licensing Code (GELC), and the Quarterly Water Dose Assessment Code (QWATA). These models are based on guidance provided by the NRC (in Regulatory Guides 1.109, 1.111 and 1.1 13) for determining the potential dose to individuals and populations living in the vicinity of the plant. The area around the plant is analyzed to determine the pathways through which the public may receive a dose. The doses calculated are a representation of the dose to a "maximum exposed individual." Some of the factors used in these calculations (such as ingestion rates) are maximum values. Many of these factors are obtained from NUREG/CR-1004. The values chosen will tend to overestimate the dose to this "maximum" person. The expected dose to actual individuals is lower. The calculated doses are presented in Tables 1 through 9.

DOSES FROM AIRBORNE EFFLUENTS For airborne effluents, the public can be exposed to radiation from several sources: direct radiation from the radioactivity in the air, direct radiation from radioactivity deposited on the ground, inhalation of airborne radioactivity, ingestion of vegetation which contains radioactivity deposited from the atmosphere, and ingestion of milk and beef which contains radioactivity deposited from the atmosphere onto vegetation and subsequently eaten by milk and beef animals.

Airborne Discharge Points Releases from SQN are considered ground-level releases. The ground-level Joint Frequency Distribution (JFD) is derived from windspeeds and directions measured 10 meters above ground and from the vertical temperature difference between 10 and 46 meters, and are presented for each quarter in Attachment 1.0.

Meteorological Data Meteorological variables at SQN are measured continuously. Measurements collected include wind speed, wind direction, and temperature at heights of 10, 46, and 91 meters above.the ground. Quarterly joint frequency distributions (JFDs) are calculated for each release point using the appropriate levels of meteorological data. A JFD gives the percentage of the time in a quarter that the wind is blowing out of a particular upwind compass sector in a particular range of wind speeds for a given stability Class A through G. The wind speeds are divided into nine wind speed ranges. Calms are distributed by direction in proportion to the distribution of noncalm wind directions less than 0.7 m/s (1.5 mph). Stability classes are determined from the vertical temperature difference between two measurement levels.

External Exposure Dose Dose estimates for maximum external air dose (gamma-air and beta-air doses) are made for points at and beyond the unrestricted area boundary as described in the SQN ODCM. The highest of these doses is then selected.

E2-2

Submersion Dose External doses to the skin and total body, due to submersion in a cloud of noble gases, are estimated for the nearest residence in each sector. The residence with the highest dose is then selected from all sectors.

Organ Dose.

Doses to organs due to releases of airborne effluents are estimated for the inhalation, ground contamination, and ingestion pathways. The ingestion pathway is further divided into four possible contributing pathways: ingestion of cow/goat milk, ingestion of beef, and ingestion of vegetables. Doses from applicable pathways are calculated for each real receptor location identified in the most recent land use survey.. To determine the maximum organ dose, the doses from the pathways are summed for each receptor. For the ingestion dose, however, only those pathways that exist for each receptor are considered in the sum, i.e., milk ingestion doses are included only for locations where milk is consumed without commercial preparation and vegetable ingestion is included only for those locations where a garden is identified. To conservatively account for beef ingestion, a beef ingestion dose equal to that for the highest unrestricted area boundary location is added to each identified receptor. For ground contarnination, the dose added to the organ dose being calculated is the total body dose calculated for that location, i.e., it is assumed that the dose to an individual organ is equal to the total body dose.

Doses from airborne effluents are presented in Tables 1 through 4.

DOSES FROM LIQUID EFFLUENTS For liquid effluents, the public can be exposed to radiation from three sources: the ingestion of water from the Tennessee River, the ingestion of fish caught in the Tennessee River, and direct exposure from radioactive material deposited on the river shoreline sediment (recreation).

The concentrations of radioactivity in the Tennessee River are estimated by a computer model which uses measured hydraulic data downstream of SQN. Parameters used to determine the

  • doses are based on guidance given by the NRC (in Regulatory Guides 1.109) for maximum ingestion rates, exposure times, etc. Wherever possible, parameters used in the dose calculation are site specific use factors determined by TVA. The models that are used to
  • estimate doses, as well as the parameters input to the models, are described in detail in the SQN C)DCM.

Liquid Release Points and River Data Radioactivity concentrations in the Tennessee River'are calculated assuming that releases in liquid effluents are continuous. Routine liquid releases from SQN, located at Tennessee River Mile 484, are made through diffusers which extend into the Tennessee River. It is assumed that releases to the river through these diffusers will initially be entrained in one-fifth of the water Which flows past the plant. The QWATA code makes the assumption that this mixing condition holds true until the water is completely mixed at the first downstream dam, at Tennessee River Mile 471.0.

E2-3

Doses are calculated for locations within a 50-mile radius downstream of the plant site. The maximum potential recreation dose is calculated for a location immediately downstream from the plant outfall. The maximum individual dose from ingestion of fish is assumed to be thai calculated for the consumption of fish caught anywhere between the plant and the first downstream dam (Chickamauga Dam). The maximum individual dose from drinking water is assumed to be that calculated at the nearest downstream public water supply (East Side Utilities). This could be interpreted as indicating that the maximum individual, as assumed for liquid releases from Sequoyah, is an individual who obtains all of his drinking water at East Side Utilities, consumes fish caught from the Tennessee River between SQN and Chickamauga Dam, and spends 500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> per year on the shoreline just below the outfall from Sequoyah. Dose estimates for the maximum individual due to liquid effluents for each quarter in the period are presented in Tables 5 through 8, along with the average river flows past the plant site for the periods.

Population doses are calculated assuming that each individual consumes milk, vegetables, and meat produced within the sector annulus in which he resides. Doses from external pathways and inhalation are based on the 50-mile human population distribution.

POPULATION DOSES Population doses for highest exposed organ due to airborne effluents are calculated for an estimated 1,060,000 persons living within a 50-mile radius of the plant site. Doses from external pathways and inhalation are based on the 50-mile human population distribution.

Ingestion population doses for total body and the maximum exposed organ due to liquid effluents are calculated for the entire downstream Tennessee River population. Water ingestion population doses are calculated using actual population figures for downstream public water supplies. Fish ingestion population doses are calculated assuming that all sport fish caught in the Tennessee River are consumed by the Tennessee River population.

Recreation population doses are calculated using actual recreational data on the number of shoreline visits at downstream locations.

Population dose estimates for airborne and liquid effluents are presented in Tables 1 through 8.

DIRECT RADIATION External gamma radiation levels were measured by thermoluminescent dosimeters (TLDs) deployed around SQN as part of the offsite Environmental Radiological Monitoring Program.

The quarterly gamma radiation levels determined from these TLDs during this reporting period averaged approximately 15.25 mR/quarter at onsite (at or near the site boundary) stations and approKimately 14.00 mR/quarter at offsite stations, or approximately 1.25 mR/quarter higher onsite than at offsite stations. This difference is consistent with levels measured for preoparation and construction phases of the TVA nuclear plant site where the average radiation levels onsite were generally 2-6 mR/quarter higher than the levels offsite. This may be attributable to natural variations in environmental radiation levels, earth moving activities onsite, the mass of concrete employed in the construction of the plants, or other E2-4

undetermined influences. Fluctuations in natural background dose rates and in TLD readings tend to mask any small increments which may be due to plant operations. Thus, there was no identif able increase in dose rate levels attributable to direct radiation from plant equipment and/or gaseous effluents.

DOSE TO A MEMBER OF THE PUBLIC INSIDE THE UNRESTRICTED AREA BOUNDARY As stated in the SQN Offsite Dose Calculation Manual, an evaluation of the dose to a member of the public inside the unrestricted area boundary is performed for a hypothetical TVA employee who works just outside the restricted area fence for an entire work year (2000/8760 hours). Results from onsite TLD measurements for the calendar year in question indicate that the highest onsite TLD reading was 250 mrem. Using this value, and subtracting an annual background value of 62 mrem/year, and multiplying by the ratio of the occupancy times, the external dose was 42.92 mrem. The doses due to radioactive effluents released to the atmosphere calculated in this report would not add a significant amount to this measured cose.

This dose is well below the 10 CFR 20 annual limit of 100 mrem.

TOTAL DOSE To determine compliance with 40 CFR 190, annual total dose contributions to the maximum indivic ual from SQN radioactive effluents and other nearby uranium fuel cycle sources are considered.

The annual dose to any organ other than thyroid for the maximum individual is conservatively estimated by summing the following doses: the total body air submersion dose for each quarter, the critical organ dose (for any organ other than the thyroid) from airborne effluents for each quarter from ground contamination, inhalation and ingestion, the total body dose from liquid effluents for each quarter, the maximum organ dose (for any organ other than the thyroid) from liquid effluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the environmental monitoring program. This dose is compared to the 40 CFR 190 limit for total body or any organ dose (other than thyroid) to determine compliance.

The annual thyroid dose to the maximum individual is conservatively estimated by summing the following doses: the total body air submersion dose for each quarter, the thyroid dose from airborne effluents for each quarter, the total body dose from liquid effluents for each quarter, the thyroid dose from liquid effluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the environmental monitoring program. This dose is compared to the 40 CFR 190 limit for thyroid dose to determine compliance.

Cumulative annual total doses are presented in Table 9.

E2-5

Table 1 Doses from Airborne Effluents First Quarter Individual Doses Quarterly Percent of Location Pathway Dose Limit Limit Sector/Distance External Gamma Air 5.38E-03 mrad 5 mrad

<1 N/950 Beta Air 2.63E-03 mrad 10 mrad

<1 N/950 Submersion Total Body 3.23E-03 mrad 10 mrad

<1 SSW/21 34 Skin 4.93E-03 mrad 10 mrad

<1 SSW/21 34 Organ Doses Child/Thyroid 9.75E-03 mrem 7.5 mrem

<1 N/`1829 Child/Total Body 9.36E-03 mrem 7.5 mrem

<1 N/1 829 POpLIlation Doses Total Body Dose 2.67E-02 man-rem Maximum Organ Dose (organ) 2.79E-02 man-rem (thyroid)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for natural background).

E2-6

Table 2 Doses from Airborne Effluents Second Quarter Individual Doses Quarterly Percent of Location Pathway Dose Limit Limit Sector/Dista nce External Gamma Air 4.30E-03 mrad 5 mrad

<1 NW/660 Beta Air 2.80E-03 mrad 10 mrad

<1 NW/660 Submersion Total Body 2.70E-03 mrad 10 mrad

<1 NNW/84 1 Skin 4.25E-03 mrad 10 mrad

<1 NNW/841 Organ Doses Child/Thyroid 1.61E-02 mrem 7.5 mrem

<1 S/2093 Child/Total Body 1.55E-02 mrem 7.5 mrem

<1 S/2093 I..

D... s Population Doses Total Body Dose 4.26E-02 man-rem Maximum Organ Dose (organ) 4.41 E-02 man-rem (thyroid)

Population doses can be compared to the natural background dose for the entire 50-mite population of about 95,400 man-rem/year (based on 90 mrem/yr for natural background).

E2-7

Table 3 Doses from Airborne Effluents Third Quarter Individual Doses Quarterly Percent of Location Pathway Dose Limit Limit Sector/Distance External Gamma Air 2.18E-03 mrad 5 mrad

<1 S/1570 Beta Air 1.57E-03 mrad 10 mrad

<1 S/1 570 Submersion Total Body 1.65E-03 mrad 10 mrad

<1 S/1786 Skin 2.68E-03 mrad 10 mrad

<1 S/1786 Organ Doses Child/Thyroid 1.08E-02 mrem 7.5 mrem

<1 S/2093 Child/Total Body 1.06E-02 mrem 7.5 mrem

<1 S/2093 Population Doses Total Body Dose 1.5 Maximum Organ Dose (organ) 3E-02 man-rem 1.55E-02 man-rem (thyroid)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for natural' background).

E2-8

Table 4 Doses from Airborne Effluents Fourth Quarter Individual Doses Quarterly Percent of Location Pathway Dose Limit Limit Sector/Distance External Gamma Air 4.91 E-03 mrad 5 mrad

<1 SSW/1 840 Beta Air 1.36E-02 mrad 10 mrad

<1 SSW/1 84C Submersion Total Body 3.34E-03 mrad 10 mrad

<1 SSW/2134.

Skin 7.74E-03 mrad 10 mrad

<1 SSW/2134 Organ Doses Child/Thyroid 1.01E-02 mrem 7.5 mrem

<1 S/2093 Child/Total Body 1.01E-02 mrem 7.5 mrem

<1 S/2093 Population Doses Total Body Dose Maximum Organ Dose (organ) 2.01 E-02 man-rem 2.01 E-02 man-rem (thyroid, liver, bone, GI, lung, kidney)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for naturaI" background).

E2-9

Table 5 Doses from Liquid Effluents First Quarter Individual Doses (mrem)

Quarterly Percent of Age Group Organ Dose Limit Limit Child Total 1.50E-03 1.5 mrem

< I %

Body Child Liver 1.70E-03 5 mrem

<1 %

Child Thyroid 1.60E-03 5 mrem

< 1 %

Average Riverflow past SQN (cubic feet per second): 40,477

'opulation Doses Total Body Dose Maximum Organ Dose (organ) 1.20E-01 man-rem 1.20E-01 man-rem (Bone, GIT, Thyroid, Liver, Kidney, Lung))

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for natural background).

E2-10

Table 6 Doses from Liquid Effluents Second Quarter Individual Doses (mrem)

Quarterly Percent Age Group Organ Dose Limit of Limit Child Total Body 4.20E-03 1.5 mrem

< I %

Adult GIT 5.5E-03 5 mrem

< 1 %

Child Thyroid 4.20E-03 5 mrem I

.1 %

Average Riverflow past SQN (cubic feet per second): 25,212 Population Doses Total Body Dose 3.50E-01 man-rem Maximum Organ Dose (organ) 3.60E-01 man-rem (GIT)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for.

natural background).

E2-11

Table 7 Doses from Liquid Effluents

- Third Quarter Individual Doses (mrem)

Age Quarterly Percent of Group Organ Dose Limit Limit Child Total Body 2.10E-04 1.5 mrem

< I %

Adult GIT 2.30E-04 5 mrem

<.1 %

Child Thyroid 2.1OE-04 5 mrem

< I %

Average Riverflow past SQN (cubic feet per second): 32,643 Population Doses Total Body Dose 1.90E-02 man-rem Maximum Organ Dose (organ) 2.OOE-02 man-rem (GIT)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for natural background).

E2-12

Table 8 Doses from Liquid Effluents Fourth Quarter Individual Doses (mrem)

Age 11 Quarterly Percent Group I Organ I Dose Limit of Limit Child Total Body 1.40E-03 1.5 mrem 1I Child Liver 1.50E-03 5 mrem

<1 %

Child Thyroid 1.30E-03 5 mrem

< 1 %

Average River flow past SQN (cubic feet per second): 25,310 Population Doses Total Body Dose 1.10E-01 man-rem Maximum Organ Dose (organ) 1.10E-01 man-rem (GIT)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for natural background).

E2-13

JOINT PERCENTAGE FREQUENCIES Or WIND S?-ED BY W:ND DIRZCTION FOR STABILITY CLASS A (DELTA.<--1.9 C/100 M)

Secuoyah Nuclear Plant JAN 1, 2005 -

MAR 31, 20C05 WIND SPEED(MH)

CALM 0.6-1.4

.1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 DIRECtION TOTAL N

0.329 NNE 1.457 NE 0.423 ENE 0.235 E

0 :094 ESE 0.047 SE 0.000 SSE 0.000 S

0.047 SSW 0.705 S-A 0.329 WSW 0.000 W

0.

814 WNW 0.047 0.611 NNW 0.047 SUBTOTAL 4.554 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o

0.000 0.000 0.141 0.094 0.188 0.04 7 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.141 0.564 0.188 0.047 0.047 0.000 0.000 O0.000 0.047 0.376 0.047 0.000 0.000 0.000 0,141 0.000 0.188 0.752 0.141 0.000 0.000 0.000 0.000 0.000 0.0 0C

0. 323 0.242 0.000
0. 1lY 0.0 C.

0.376 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0(10 0.(U00 0.t00 0.1)00 0.1)00 0.1)00

0. )00 0.1)00
0. 100 0.1)00 0.1300 0.300 0.00 0.1)00 0.00 0..)00
0. )00 0.000 0.000 0.000 0.517 1.594 2.3'3 0.141 0.000 0.300 TCTAL HOURS OF VALID STABILITY OBSERVATIONS TCTAL HOURS OF STABILITY CLASS A TCTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A TCTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OPSERVATION;S TCTAL HOURS CALM METEOROLOGICAL FACILITY:

Seqioyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2005/OE/02.

MEAN WIND SPEED -

7.78 NCTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS 2124 97 97 2128 0

DATE PRINTED:

A2-2

JO.NT PERCENTASE FREQUENCIES OF W;ND SPEED BY W.N2 D:.Z--:02' FCR STABILITY CLASS B

(-1.9< DELTA T<--1.7 C!:^2 M)

Sequoyah Nuclear Plant JAN 1, 2005 -

MVR 31, 2005 WIND DIRECTION TOTAL N

0.235 NNE 0.987 NE 0.188 ENE 0.141 E

0.094 ESE 0.000 SE 0.000 SSE 0.000 S

0.000 SSN 0.752 SW 0.376 0.141 w

n.C47 NW

0. Sw 0.000 S3.TOTIA,
3. 477 WIND SPEED (MPH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-:3.:

13.5-24.4

>-241.5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.094 0.000 O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0(0 0.047 0.235 0.094 0.047 0.094 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.141 0.423 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.611 0.23S 0.047 0.000 0.000 0.094 0.000 O.0CO 0.329 0.047 0.000 0.C00 0.000 0.0CO 0.000 0.000 O.C94 0.094 O.C94 O.COO 0.0 i7 0.376 0. C30 C. C 09 I."__I

-ro0 "1.XI_

-__i I

C."^

I.1!.

1

_ C O.CZS0 0.0.00 O.C00 0.000 0.000 0.O CO 0.02Z O.C0o

.O I, 0 0.010 O.C^2C I,0:0 0.000 C.I C:C 0.000

0. 000 0.01)0 0.01)0 0.01)0 0.0 0 0.030 0.020 0.0 30 0.030 0.000 0.030 0.000 0.000 0.000 0.000 0.000 0.000 0.141 0.611 1.59 1.I1:1 2.:7 O.Z^S 0.000

.OTAL IIOURS OF VALID STADILITY OBSZRVATrIONS TOTAL HOURS OF STABILITY CLASS B

.OTAL HOfIRS OF VALID WIND DIREc.TON-WTND SPEED-STABILITY CLASS B TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 21 2 2:21 METEOROLOGICAL FACILITY:

Seq'ioyah Nuclear Plant STr.BrLrTY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS W.IND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2005/06,'02 M AN WIND SPEED -

6.77 NO'7E:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

-ATE PRINTI.D:

.O#

A2-3

b__

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND D'RECTION FOR STABILITY CLASS C

(-1.7< DELTA T<--1.5 C/100 M)

Sec'aoyah Nuclear Plant JAN 1, 2005 -

MAR 31, 2005 WIND DIRECT CON TOTAL N

0.235 NN'.

0.705 NE 0.423 EN, 0.000 E

0.000 ES.

0.047 SE 0.18S SSI 0.000 S

0.235 SS4 0.18d SW 0.376 WS'4 0.047 W

0.094 WNW 0.329 N:w

0. 1j8 NN4 0.141 SUdBTOT NL 3.195 WIND SPEED(MPH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>-24.5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.094 0.188 0.329 0.000 0.000 0.047 0.141 0.000 0.094 0.094 0.141 0.000 0.000 0.000 0.000 0.04 7 0.094 0.094 0.047 0.000 0.000 0.000 0.000 0.000 0.141 0.094 0.235 0.047 0.000 0.047 0.000.

0.047 0.047 0.376 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.034 0.141 0.141 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.141 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.c00 0.C00 0.C00 0.C00 0.c00 D.C 00 0.100 D.C 00 0.CO00 O.C 00 ID.C 00 D.C 00 0.100 D.C 00 D.C 00 C.C 00 0.000 0.000 0.188 1.175 0.846 0.AF46 0.141 0.000 0.(00 TOrAL HIOURS OF VALID STABILITY OBSERVATIONS TOrAL HOURS OF STABILITY CLASS C TOrAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C TOrAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOrAL HOURS CALM 2128 68 68 2128 0

MEtEOROLOGICAL FACILITY:

Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS W::4D SPEED AND DIRECTION MEASURED'AT 9.73 METER LEVEL 2005/06/02 MEANJ WIND SPEED -

6.60 NOIrZ:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTID:

A2-4

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DR.ZCT:C!J FOR STABILITY CLASS D

(-1.5< DELTA T<--0.5 C/l00 M)

Sequoyah Nuclear Plant JAN 1,

2005 -

M.UAR 31, 2005 WIND DIRECT::ON TO-AL N

4.934 NN I 9.258 NE 1.739 ENK 0.423 E

0.329 ESE 0.235 SE

0. 18I sIr 0.329 s

1.927 SS4 5.686 SW 4.511 WSW 1.645 W

0.917 WN4 1.645 2.491 SUBTOTAI 38.863 WIND SPEED(MH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>-24.5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.047 0.047 0.047 0.047 0.047 0.000 0.000 0.047 0.047 0.000 0.047 0.141 0.0 94 0.141 0.987 1.457 1.034 0;329 0.282 0.188 0.141 0.141 0.611 1.551 0.799 0.329

0. 188 0.000
0. 18Y 0.470 1.175 2.256 0.329 0.047 0.000 0.000 0.000 0.141 0.705 2.773 2.444 0.752 0.235
0. 18-
0. 4 70 0.0 )4 1.457 2.679 0.282 0.000 0.000 0.000 0.000 0.000 0.188 0.987 0.752 0.282 0.23S 0.376 0.752 0.470 1.222 2.867 0.047 0.000 0.000 0.000 0.000 0.000 0.423 0.329 0.470 0.2Y2 0.212 0." S3 0.940 1.222 0.000 0.C50 0.000 0.000 0.000 0.000 0.000 0.047 0.33C 0.003 O.0 33 0.00
0. CC^

C.34 '

0.09 0.094 0.003 0.000 0.000 0.000

0. 05C 0.00^

0.0S 0.033 0.053 0.030 0.0 0C 0. 033 0.OC0 0.0 3C 0.DC.,

0. 005 0.c00 0.c00 0.c00 0.( 00 0.('0o 0.000 0.000 0.10 0 0.1100 0.1000 0.1100
o. 600 0.1100 0.110 0 0.3000 0. )00 0.000 0.846 H.694 11.607 8.459 8.976 0.282 0.0^0 0.)00 TCTAL

!0tlRS OF VALID STABILITY OBSERVATIONS TCTAL HOURS OF STABILITY CLASS D TCTAL HOURS OF VALID WIND DIRECTIONl-WiND SPEED-STABILITY CLASS D TCTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVA7-ONS TCTAL HiOURS CALM 2 28 827 827 2120 0

METEOROLOGICAL FACILITY:

Seqaioyah tIuclear Plant SIABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 ME-TER LEVEL 2C05/OE /02 MEAN WIND SPEED -

5.54 NoTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS CATE PRINTED:

A2-5

JOINT PERCENTAGE FRECUENCIES OF W:ND SPEED BY WIND D;RECTION FOR STABILITY CLASS E

(-0.5< DELTA T<- 1.5 C/100 M)

Sequoyah Nuclear Plant JAN 1, 2005 MAR 31, 2005 WIND DIRECT EON TOTAL N

3.289 NNI 5.451 NE 1.034 ENE:

0.188 E

0.094 ESI:

0.188 SE 0.282 SSE:

0.705 S

3.008 6.015 SW 5.639 O.H93 W

0.376 0.752 1.081 1.410 SrUDTOTP [.

30.404 WIND SPEED (MH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>-24.5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.188 0.282 0.188 0.141 0.094 0.141 0.094 0.141 0.376 0.376

0. 18d
0. 185) 0.000 0.141 0.141 0.094 1.733 2.726 0.658 0.047 0.000 0.047 0.183 0.423 1.363 2.679 2.531) 0.329 0.235 0.376
0. 423 0.705 1.081 2.256 0.141 0.000 0.000 0.000 0.000 0.047 0.705 1. 974 2.256 0.329 0.047 0.184 0.4(70 0(.376 0.282 0.188 0.047 0.000 0.000 0.000 0.000 0.047 0.329 0.705 0.470 0.047 0.047 0.0417 0.047 0.188 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.235 0.282 0.185) 0.000 0.047 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.COO 0.000 0.000 0.000 O.COO 0.000

.0Coo 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.030 0.010 0.00 0.030 0.030 0.030 0.0 30 0.0)0 0.0)0 0.0)0 0.0)0 0.0)0 0. 0K0 0.010 0.010 0.000 2.773 14.474 9.864 2.444 0.846 0.000 0.000 0.0(0 TOTrAL HOURS TOTAL HOtJRS TOTAL HOURS TOTAL HlOURS TOTAL HOURS OF VALID STABILITY OBSERVATIONS OF STABILITY CLASS E OF VALID WIND DIRECTION-WIN:D SPEED-STABILITY CLASS _

OF VALID WIND DIRECTION-W1ND SPEED-STABILITY OBSERVATIONS CALM 2125) 647 647 2124 0

METEOROLOGICAL FACILITY:

Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2005/06/02 MEAN WIND SPEED -

3.40 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED N-J4BZERS DATE PR:N.ED:

A2-6

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND D.RZCTION FOR STABILITY CLASS F

( 1.5< DELTA T<- 4.0 C/100 M)

Seqroyah Nuclear Plant JAN

1.

2005 -

MAR 31.

2005 WIND SPEED(MPH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 WIND DIRECTION TO-AL N

0.517 SNI:I 3.336 NE 1.410 EN!I 0.094 E

0.188 ESl:

0.235 SE 0.470 ssi:

0.329 S

1.128 SSW 1.927 SW 2.068 WSW O. 64 w

0.235 W!:X 0.047 NW

0. ('94 rr-a

(.

14'1 Sr:BTOTZ.L 12.782

>-24.5 0.000 0.047 0.423 0.047 0.000 0.000 0.141 2.773 0.423 0.000 0.000 0.282 0.987 0.141 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.047 0.141 0.000 0.000 0.000 0.141 0.047 0.047 0.000 0.000 0.235 0.235 0.000 0.000 0.000 0.141 0.094 0.047 0.047 0.000 0.235 0.799 0.094 0.000 0.000 0.094 1.645 0.188 0.000 0.000 0.188 1.410 0.376 0.094 0.000 0.141 0.376 0.000 0.047 0.000 0.047 0.188 0.000 0.000 0.000 0.000 0.000 0.000 0.0:7 0.000 0.047 0.000 0.047 0.(00 0.000 0.047 0.094 0.000 0.0(00 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

0. 00 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o0.00CO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.COO 0.COO O.COO O.COO 0.000 0.000 0.000 0.000 0.003 0.000 0.000 0.000 0.010 0.0 30 0.000 0.030 0.000 1.927 9.211 1.410 0.23; 0.000 0.000 0.000 0.000 TOAL HOURS OF VALID STABILITY OBSERVATIONS TOIAL HOURS OF STABILITY CLASS F TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F TOTAL 11OtRS OF VALID W2ND DIRECTION-WIND SPEED-STABILITY OBSERVATIONZs TOTAL HOURS CALM 2128 272 272 2129 0

METEOROLOGICAL FACILITY:

Seq'soyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2005/06/02 MEAN WIND SPEED -

2.41 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED:

A2-7

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY W'ND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

Sequoyah Nuclear Plant JAN 1, 2005 -

MAIR 31, 2005 WIND SEED (MH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 19.5-24.4

>-24.5 WIND DIRECTION TOTAL N

0.047 NN _

1.231 NE 1.704 EN r 0.615 E

0.189 ESE 0.095 SE 0.142 Ss5 0.095 S

0.284 558 1.136 SW 0.993 WSd 0.047 W

0.000 o. 000 0.4 07 0.094 Stl3TOTAT.

f. 720 0.000 0.000 0.009 0.094 0.012 0.329 0.004 0.517 0.001 0.047 0.001 0.047 0.001 0.094 0.001 0.047 0.002 0.235 0.008

0. 235 0.006 0.094 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.047 0.047 1.880 0.047 0.000 0.000 1.129 0.000 0.000 1.316 0.047 0.000 0.094 0.000 0.000 0.141 0.000 0.000 0.047 0.000 0.000 0.047 0.000 0.000 0.047 0.000 0.000 0.047 0.000 0.000 0.846 0.047 0.000 0.752 0.141 0.000 0.000 0.000 0.000 0.000 0.ooo 0.000 0.000 0.0ooo0 0.000 0.000 0.000 0.000 0.000 0.047 0.000 4.511 0.2/82 0.000 0.000 0.000 0.000 0.000 0.000 o

0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.COO 0.000 0.000 0.000 0.000 0.000 o.coo 0.000 0.000 O.CO0 0.000 0.000 o.C00 0.000 0.000 o.co0 0.000 0.000 o.Coo 0.000 0.000 O.COC 0.000 0.000 0.CO0 0.000 0.000 o.co0 0.000 0.0o0 o.0.0 00.000

0.

o.1C0C 0.000 0.000 O.fO0 0.000 0.000 0.C0C 0.000 0.00oo o.Co0 0.00 0.000 O.tC0 0.000 0.000 O.t00 TOTAL HOURS OF VALID STABILITY OBSERVATI0:S TOTAL HOtJRS OF STABILITY CLASS G TOrAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G TOrAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOrAL HOURS CALM MErEOROLOGICAL FACILITY:

Seq'ioyah Nuclear Plant STkBILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2005/06/02 MEkN WIND SPEED -

1.91 NOrE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS 2124 143 143 2128 1

DATE PRINTED:

A2-8

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STA3ILITY CLASS A (DELTA T<--1.9 C/100 M)

Sequoyah Nuclear Plant APR 1,

2005 -

JUN 30, 2005 WIND DIRECTON TOTAL N

0.422 NN-1.967 NE 1.967 ENr 0.422 E

0.187 ESE 0.094 SE 0.141 SSE 0.187 S

0.46Y ssW 1.499 SW 1.21H WSW 0.017 W

0.0)4 WNw 0.187 Nw 0}

. 14 1

NNW 0.047 SNJBTOTA:

9.087 WIND SPEED(MPH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>-2 1.5 0.000 0.000 0.000 0.094 0.047 0.000 0.000 0.197 1.124 0.562 0.000 0.000 0.422 0.796 0.562 0.000 0.000 0.281 0.094 0.047 0.000 0.000 0.047 0.141 0.000 0.000 0.000 0.047 0.000 0.047 0.000 0.000 0.047 0.094 0.000 0.000 0.000 0.047 0.094 0.000 0.000 0.000 0.094 0.187 0.187 0.000 0.000 0.1S7 0.9S4 0.234 0.000 0.000 0.187 0.703 0.328 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 oo

.o00 0.000 0.000 0.000 0.000 0.000 0.0(0 0.000 0.000 0.000 1.546 4.356 2.014 0.281 0.094 0.187 0.000 0.000 0.000 0.000 0.047 0.000 0.094 0.000 0.000 0.09 4 0.1-t7 0.141 0.01 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0100

0. 0 3O 0.030
0. 0.)0 0.0130
0. 1)0 0.000 0.0)0 0.0)0 0.000 0.0(10 0.0(0 0.0(0 0.0(10 0.0(10 0.000
0. 0c00 1.171 0.000 0

o.000 0.oto TOTAL HOURS TOTAL HOURS TOTAL HOURS TOTAL HOUIRS TOTAL HOURS OF VALID STABILITY OBS0-RVATIONS OF STABILITY CLASS A OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATION3 CALM 2155 194 194 213S 0

MET1:OROLOGICAL FACILITY:

Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIN:

SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2005/08/26 MEAN WIND SPEED -

5.20 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTEC:

A2-9

JOINT PERCEN-AGE FREQUENlCIES OF WIND SEED BY WIND DlRECTION FOR STA3ILITY CLASS B

(-1.9< DELTA T<--1.7 C/100 M)

Sequoyah Nuclear Plant APR 1, 2005 -

JUN 30, 2005 WIND DIRECCTION TOTAL N

0.187 N::E 0.234 NE 0.468 E1E 0.187 E

0.047 ESE 0.141 SE 0.187 SEE 0.047 S

0.328 SEW 0.937 SV' 1.077 WEW 0.000 W

0.047 W NW 0.141 N'0 0.047 NtW 0.047 SUBTOIAL 4.122 WIND SPEED(MPH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.187 0.047 0.047 0.094 0.094 0.000 0.187 0.281 0.375 0.000 0.000 0.000 0.000 0.000 0.094 0.141 0.234 0.141 0.000 0.047 0.047 0.047 0.094 0.422 0.703 0.000 0.000 0.000 0.04 7 0.(]000 0.094 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.234 0.000 0.000 0.000 0.000 0. 0o0 0.047 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 0.0 94 0.000 O.000(

0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.1)00 O.C)00 O.000 0.)00

0. 00 0.(00 0.000 0.(00 0.(0)O 0.0010 0.(00 0.000 0.000
0. (100 0.(oC 0.00C 0.000 0.047 1.358 2.014 0.422 0.234 0.047 0.000 0.)00 TCTAL HOURS OF VALID STABILITY OsERfVATIONS TOTAL HOURS OF STABILITY CLASS B TCTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABI3.ITY CLASS B TCTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STAD:LITY OBSERVATIONS TCTAL HOURS CALM 2155 83 2135 0

METEOROLOGICAL FACILITY:

Seqsloyah Nuclear Plant SIABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.33 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2005/08/26 MEAN WIND SPEED -

4.44 NCTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTE:D:

A2-1 0

JOINT PERCENTASE FREQUENCIES OF WIND SPEED BY W:ND DIRECTION FOP, STABILITY CLASS C

(-1.7< DELTA T<--1.5 C/100 M)

Seuoyah Nuclear Plant APR 1, 2005 - JUN 30, 2005 WIND SPEEDD(MPH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 WIN:D DIRECTION TOTAL N

0.328 NNE 0.515 NE 0.609 ES E 0.000 E

0.141 ESE 0.141 SE 0.000 SSE 0.187 S

0.515 SSW 0.843 SIX 1.26S WSW 0.141 W

0.000 WNX 0.375

0. 375 NNX 0.141 SUThOT AL 5.574 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
0. 000
0. 000 0.000 0.000 0.000 0.047 0.141 0.187 0.000 0.141 0.047 0.000 0.094 0.094 0.094 0.328 0.000 0.000 0.000 0.000 0.000 0.094 0.141 0.328 0.000 0.000 0.094 0.000 0.047 0.281 0.562 0.74 3 0.047 0.000 0.094 0.047 0.o00 0.141 0.187 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.187 0.187 0.094 0.000 0.234 0.187 0.094 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.141
0. 000 0.000 0. OSO 0.000 0.047 0.14.

0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0(1

(.0(0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

(. 0010 0.300

0. 300
0. 300
0. 300
0. O00
0. )00
0..00 0.,,00 0.00
  • 0.000 0.000 0.000 0.000 0.1300 0.fl00 0.100 0.000 0.047 1.171 2.4 i2 1.405 0.468 0.000 0.000 0.(00 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS C TOTAL HOURS OF VALID WIND DIRECTICN-WIND SPEED-STABILITY CLASS C TOTAL HOURS OF VALID WIND DIRECTICN-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2155 11'9 119 2135 0

METEOROLOGICAL FACILITY:

SeTioyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2005/08/26 MEkN WIND SPEED -

4.82 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED:

A2-11

JOINT PERCENTAGE FREQU-NC.ES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D

(-1.5< DELTA T<--0.5 C/100 M)

Secuoyah. Nuclear Plant APR 1, 2005 -

JUN 30, 2005 WIND DIRECTION TOTAL N

1.780 NN.-

4.215 NE 1.218 EN;Z 0.422 E

0.422 ES1:

0.281 SE 0.468 551:

1.405 S

3.326 SSW 4.871 SW 5.012 WSW 1.546 W

1.030 WNWI 1.4:3:

NW 1.646 Nrsw I.4 99 SUBTOT,.r.

3(1.679 WIND SPEED(M?H)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.094 0.0 94 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.187 0.047 0.000 0.000 0.047 O.001

0. 187 0.890 1.499 0.796 0.281 0.234 0.281 0.281 0.562 1.686 2.576 2.529 0.74 9 0.234 0.241 0.234 0.281 0.375 1.874 0.328 0.141 0.141 0.000 0.094 0.375 1.358 1.920 2.061 0.515 0.241 0.281 0.328 0.515 0.328 0.562 0.094 0.000 0.047 0.000 0.047 0.000 0.141 0.187 0.375 0.234 0.147 C.375 0.796 0.4h6 0.094 0.187 0.000 0.000 0.000 0.000 0.000 0.422 0.141 0.000 0.000 0.047 0.321 0.515 0.324 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.00D 0.000 0.000
0. (1(00 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.00J 0.0DO 0.000 0.000 0.00D 0.0D0 0.030 O.OO 0.030 0.030 0.0 )0 0.030 0.0)0 0.0 0 0.0)0 0.0)0 0.000 0: 749 13.396 10.545 3.811 2.10'1 0.00 0.000 oo.~o TOTAL HOURS OF VALID STABILITY OBSERVATIONt TOTAL HOURS OF STABILITY CLASS D TO1AL ilOURS OF VALID WIND DlRECTION-WIND SPZZD-STAB3L'-Y CLASS D TOIAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STAB:L:TY OBSERVATIONS TOTAL HOURS CALM 2155 664 655 2135 0

METEOROLOGICAL FACILITY:

SeJuoyAh NJclear Plant STPBILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 MZETRS WIND SPEED AND DIRECTION MEASURED AT 9.73 M-ZTER LEVEL 2005/0/26 MEAN WIND SPEED -

4.07 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROU::DED 1.UMBERS DATE PRINTE:):

A2-12

JOINT PERE.NTAGE FREQUENC:ES OF WIND SPEED BY WIND DIRZCTION FCR STA3.:LITY CLASS E

(-0.5< DELTA T<- 1.5 C/100 M)

Sequoyah Nuclear Plant APR 1,

2005 -

JTUN 3S, 2005 WIND DIRECTION TOTAL N

5.386 NNE 3.560 NE 0.984 EN' 0.375 E

0.468 ESE 0.141 SE 0.937 SSE 1.311 S

2.201 SS;A 4.169 SW 3.747 1.499 W

1.593 1.452 NW 1.265 1.639 SUBTOTAL 30.726 WIND SPEED(MPH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>-241.5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.468 0.468 0.328 0.094 0.234 0.094 0.422 0.609 0.281

0. 329 0.46f 0.141 0.187 0.328 0.234 0.32H 3.513 2.342 0.422 0.28' 0.234 0.047 0.51_

0.562 0.937 2.991 2.442 1.077 1.03^

0.703 0.37' 0.89.,

1.311 0.703 0.234 0.000 0.0CO 0.000 0.000 0.000 0.234 0.703 0.796 0.187 0.328 0.375 0.422 0.328 0.094 0.047 0.000 0.000 0.000 0.000 0.000 0.047 0.515 0.141 0.000 0.047 0.047 0.047 0.187 (1.O0' 1 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.094 0.234 0.000 0.000 0.047 M.0oo

0. ^0S 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.010 0.000 0.000 0.01)0 0.01)0 0.010 0.0110 0.00 0.0)0 0.0(10 0.0(10 0.01(0 0.0(10 0.0(0 0.0(0 0.000 0.000 5.012 18.417 5.621 1.265 0.422
0. coo 0.000 0.0(10 TOTAL HOURS TOTAL HOURS TOTAL HOURS TOTAL HOURS TOTAL HOURS OF VALID STABILITY OBS0RVA.:^:;S OF STABILITY CLASS E OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS CALM 2155 663 656 2135 0

METEOROLOGICAL FACILITY:

Sequcyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEV'EL 2005/08/26 MEAN WIND SPEED -

2.70 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED:

A2-13

JOINT PERCENTAGE FREQUZ'IC:ES OF W;:ID S'EED BY W:ND) DIRECTION FOR STABILITY CLASS F

( 1.5< DEL-A T<-,4.0 C/100 M)

Sequoyah Nuclear Plant APR 1, 2005 -

JUN 30, 2^05 WIND WIND SPEEDt(M?H)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 :2.5-19.4 18.5-24.4

>-24.5 TOTAL N

0.000 0.468 1.920 0.047 0.000 0.000 0.000 0.000 0.000 2.436 NNE 0.000 0.515 2.998 0.000 0.000 C.000 0.000 0.000 0.0(0 3.513 NE 0.000 0.562 0.749 0.000 0.000 0.000 0.000 0.000 0.000 1.311 ENE 0.000 0.328 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.422 E

0.000 0.422 0.094 0.000 0.000 0.000 0.000 0.000 0.0(0 0.515 ESE 0.000 0.468 0.094 0.000 0.000 0.00C 0.000 0.000 0.0(t0 0.562 SE 0.000 0.703 0.141 0.000 0.000 0.000 0.000 0.000 0.0C0 0.843 SSE 0.000 0.468 0.187 0.000 0.000 0.000 0.000 0.000 0.0t0 0.656 S

0.000 0.375 0.703 0.234 0.000 0.000 0.000 0.000 0.0t0 1.311 SSW 0.000 0.234 1.171 0.000 0.000 0.000 0.000 0.000 0.0o0 1.435 SW 0.000 0.234 0.703 0.000 0.000 t'.00S 0.000 0.000 0.0c0 0.937 WsW 0.000 0.094 0.375 0.000 0.000

(. 00 0.000 0.000 0.0C0 0.4689 W

0.000 0.047 0.094 0.047 0.000

.000

.0.000 0.000 0.0C0 0.187 WNS 0.000 0.094 0.094 0.000 0.047 C.00S 0.CS0 0.000 0.0C0 0.234 NW 0.000 0.047 0.141 0.000 0.000 C."00 0.0o0 0.000 0.0C0 0.187 NNX 0.000 0.000 0.000 0.000 0.000 c.000 0.000 0.000 0.0co 0.000 SUBTOTAL 0.000 5.059 9.555 0.329 0.047 C.^tl 0.000 0.000 0.0C0 14.999 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2:55 TOTAL HOURS OF STABILITY CLASS F 323 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STADlLlTY CLASS F 320 TOTAL HOtJFS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVA.:^NS 2135 TOTAL HOURS CALM 0

MET1:OROLOG;CAL FACILITY:

Seq'ioyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED:

2005/08/:!6 MEAN WIND SPEED -

1.89 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A2-14

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

Sequoyah Nuclear Plant APR 1,

2005 -

JUN 30, 2005 WIND SPEED (MH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>-21.5 WIND DIR-CT::ON TOTAL N

0.095 NNE; 0.520 NE 0.615 ENE 0.189 E

0.284 ESE 0.378 SE 0.520 SSE 0.520 S

0.757 SSW 0.709 SW 0.095 Wsw 0.047 e

0.0 95 wt;w 0.000 NW

0. 000 0.000 SliBTOTA L 4.824 0.001 0.047 0.047 0.000 0.005 0.094 0.422 0.000 0.006 0.187 0.422 0.000 0.002 0.094 0.094 0.000 0.003 0.234 0.047 0.000 0.004 0.375 0.000 0.000 0.005 0.515 0.000 0.000 0.005 0.422 0.094 0.000 0.007 0.375 0.375 0.000 0.007 0.094 0.609 0.000 0.001 0.000 0.094 0.000 0.000 0.047 0.000 0.000 0.001 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 2.529 2.248 0.000 0.000 0.000 0.000 0.000 0.000

.0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0CO 0.000 0.000 O.C'O 0.000 0.000 O.COO 0.000 0.000 0.C 00 0.000 0.000 0.0CO 0.000 0.000 O.C^'

0.000 0.000 0.0°?

0.000 o.000 0.0o0 0.000 0.000 0.000 0.000 0.000 0.0c0 0.000 0.000 0.0oo0o 0.000 0.000 0.000 0.000 o.000 0.000 0.000 0.000 0.0(0o 0.000 0.0o)0 0.o000 0.0)0 0.000 0.000 0o.000 0.0)0 0.000 0.000 0.000 0 o.o 0.000 0.000 0.000 0.0o 0 0.000 0.0o(0 0.000

0.

o(0 0.000 0.0o(0 0.000

0. 0(0 0.000
0. 0(.o 0.O((1 0.0( 0 0.00(1 0.0(0 0.000 0.oco TOTAL ((OURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS G TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G TOTAL HOURS OF VALID WIND DIFECTrON-wIND SPEED-STABILITY ODSERVAT.ONS TOTAL HOURS CALM METiOROLOGICAL FACILITY:

Sequoyah Nuclear Plant STAiiILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIN: SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2155 103 103 2135 1

DATE PRINTEC:

2005/08/:6 MEAN W:ND SPEED -

1.52 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUI2ERS A2-15

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTICN FOR STABILITY CLASS A (DELTA T<--l.9 C/100 M)

Sequoyah Nuclear Plant JUL 1,

2005 -

SEP 30, 2005 WIND DIRECTION TOTAL N

0.458 NNE 3.208 NE 1.5ss8 ENE 0.229 E

0.000 ESE 0.000 SE 0.000 SSE 0.046 S

0.000 SS A 0.504 SW 0.000 WS' 0.000 W

0.046 WN'A 0.000 NW 0.000 N;N'^

0.000 SUBTOTAIL G.049 WIND S?ZPED(MN)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-l8.4 18.5-24.4

>-21..5 0.000 0.000 0.000 0.183 0.000 0.000 0.550 1.558 0.000 0.000 0.687 0.733 0.000 0.000 0.183 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.504 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 C.046 0.000 0.000 0.000 n.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.275 1.100 0.137 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o. o0o 0.030 0.000 0.000

0. 000 0.000
o. COO 0.000 C.000 0. C00 o.Coo 0.cc0 0.0DD n.00I
0. C0D O.^^o 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0o0c 0.000 0.oco 0.000 0. o0o 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.000 0.000 0.000

(.000 0.00)0 0.0()0

0. o(o 0.0(0 0.01)0 0.01)0 0.0(10 0.01(0 0.0o1o 0.01(0 0.0110 0.010 0.0110 0.0(10 0.01(0 0.0110 0.000 0.000 1.4f67 3.025 1.55 0n.c.,

0.000 o.000 0o.0on TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS A TOTAL ilOURS OF VALID WIND DIRECTION-WXND SPEED-STABILITY CLASS A TOTAL IIOIRS CF VALID WIND DIRECTION-WTND SPEED-STABILITY ODSERVA.:OUS TOTAL HOURS CALM 218 3 132 132 2182 0

METEOROLOGICAL FACILITY:

Seq'ioyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2005/12/05 MEAN WIND SPEED -

4.53 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUM3ERS DATE PRINTED:

A2-16

JOINT PERCENTAGE FRECUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B

(-1.9< DELTA T<--1.7 C/100 M)

Sequoyah Nuclear Plant J1JL 1, 2005 -

SEP 30, 2005 WIND SPEED (MPH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 WIND DIRECTION TOTAL N

0.367 NN '

1.375 NE 1.237 EN :

0.092 E

0.137 ES' 0.000 SE 0.04 6 551 0.04 6 S

0.321 SSq 0.275 SW 0.137 WS.J 0.04 6 W

0.000 WNhl O.00 NW

0. Col 0.000 SUBTOTAL 4.073 0.000 0.000 0.000.

0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0(0 0.000 0.000 0.000 C. 0110

(.O0(

0.n00 0.137 0.458 1.008 0.092 0.092 0.000 0.046 0.000 0.000 0.04 6 0.046

0. 000 0.000 0.000 0.000 0.000 0.229 0.000 0.779 0.137 0.183 0.046 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.275 0.046 0.14 3 0.046 0.032 0.C100 0.046 0.CCo
0. 000) 0.000C 0.000
0. CO
0. 00)0 0.000 0.000 0.000 0.000 0.000 0.000 0.00o 0.000 0.000 O.000 0.000
0. 000
0. 0(D0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.o00
0. 000
0. 000 0.000 0.c00 0. 1 0 0 0.c00 0.100 0.100 0.COO 0.c00 0.000 0.000
0. OOC 0.000.
0. 000 0.000 0.000 0.0 001 0.000 0.000 0.000 1.925 1.87')

0.27, TOTAL IHOURS OF VALID STABILITY OBSERVATION';

TO'.AL iiOURS OF STABILITY CLAS3 B TO'AL ilOURS OF VALID WIND DTRECTION-WIND SPEED-STA3IL;TY CLASS B TO'.AL HIOURS OF VALID WIND DTFECTION-WIND SPEED-STABILITY OBSERVATIO0 TO-'AL HOURS CALM

(.ooo 0.000 0.000 0.000 2183 90 89 (53 2182 0

M--EOROLOGICAL FACILITY:

Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED:

2005/12,-05 MEAN WIND SPEED -

3.76 NO-E:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A2-17

JOINT PERCENTAGE FREQUENCIES OF WIND SZED BY WIND D:RECT:ON FOR STABILITY CLASS C

(-1.7< DELTA T<--1.5 C/l00 M)

Sec-ioyah Nuclear Plant JUL 1,

2005 -

SE? 30, 2G05 WIND SEED (MH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 DIRECTION TOTAL

>-2. 5 N

0.687 NNE 1.879 NE 0.596 ENE 0.275 E

0.275 ESE 0.C92 SE 0.229 SSE 0.321 S

0.412 ssh' 1.467 SW 0.412 WSh1

0. 183 W

0.046 WNl 0.00o NX1 n. 0o0 C.032 SIUBTOTA L 6.966 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.00(o 0.229 0.367 0.825 0.779 0.504 0.092 0.183 0.092 0.229 0.046 0.092 0.000 0.092 0.137 0.046 0.046 0.000 0.412 0.046 1.329 0.183 0.229 0.046 0.137 0.000 0.046 0.000 (0.000 0.0(00 0.C(10 0.000 0.(116 0.092 0.050 0.00 0.275 0.000 0.Z00 0.000 0.0S00 O.COO 0.000 0.000 O.CSO 0.000 0.1000 0.000 0.000 0.COO 0.Z00 0.000 0.CSO O.O00 0.046 0.137 0..o46 0.000 0.CZZ0 0.0ZZO 0.092 G.5Z0 D.ZZC 0.000 0.Z 0 0.ZC00 0.000 0.003 0.CZO 0.000 0.0 0.0^OZ 0.000 0.^CO O.Z 0.0 0.000 o.octo 0.Z030 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.000 0.000 0.000 0.000 0.G00 0.000

0. 0010 0.030 0.0 O 0 0.030 0.0)0 0.0 O0 0.030 0.0 30 0.0 3O 0.0)0 0.030 0.0)0 0.0110
0. 000 0.01)0 0.0)0 0.0900 O.000 0.000 2.475 3.75H 0.550 0.:37 0.11,o 0.00D 0.00 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS C TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY ODSERVA:-o::s TOTAL HOURS CALM METEOROLOGICAL FACILITY:

Sepsioyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.93 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2005/12/05 MEAN WIND SPEED -

4.07 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS 2 13 152 152 21Y 2 0

DATE PRINTED:

A2-18

JOIN. PERCENTAGE FREQUENCIES OF WN'ID SPEED BY W:ND DRECION FOR STA3ILITY CLASS D

(-l.S< DELTA T<--0.5 C/100 M)

Sequoyah Nuclear Plant JUL 1, 2005 -

SEP 30, 2005 WIND DIRECTION TOTAL N

3.987 NN_

4.079 NE 1.283 EN_

0.779 E

0.458 ES' 0.504 SE 1.054 SSE 2.521 S

5.5S91 SS11 7.424 SW 2.704 WSU.

0.962 W

0.275 0.367 NW 0.275 N';W 1.5581 SURTOT.1.

33.1122 W:ND SPEED(MPH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>-24.5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.003 0.000 0.000 0.000

(. 0o0 0.00o 0.000 0.046 0.046 0.04 6 0.000 0.000 0.092 0.000 0.000 0.046 0.000 0.092 0.000 0.04.,

0.000 0.000 2.200 1.512 0.642 0.642 0.4 12 0.4 58 0.687 0.917 2.521 3.437 1.237 0.504 0.092 0.113 0.229 0.779 1.558 1.558 0.367 0.092 0.000 0.04 6 0.183 0.367 2.612 3.850 1.237 0.229

0. 14 3 0.092 0.000 (0.59)6 0.183 0.733 0.137 0.000 0.046 0.000 0.046 0.367 0.092 0.092
0. O0S 0.137 0.030 0.003 0.04.6 0.137 0.046 0.229 0.0 92 0.000 0.000 0.000 0.046 0.596 0.321 0.000 0.229 0.000 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.275 0.046 0.000
0. 0)0o 0.000 0.000 0. 00 O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.030 O.030 0.0 30 0.0 30 0.030 0.030 0.030 O.COS 0.412 16.453 12.970 2.016 1.650 0.321 0.000 0.0W0 TOTAL TO.AL TOTAL TOIAL T0tAL HOURS OF VALID STABILITY OBSERVATIONS uidURS OF STABILITY CLASS D HOURS OF VALID WIND DIRECTIOII-WIND SPEED-STABLIT-Y CLASS D HOr)RS OF VALID WIND DIRECTION-WIND SPEED-STA3ILI.TY OBSERVATIONS HOURS CALM 2183 73q 731 2112 0

METEOROLOGICAL FACILITY:

Seqcioyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2005/12/05 MEAN WIND SPEED -

3.85 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED:

A2-19

JOINT PERCENTAGE FREZUZNCIES OF WIND SPEED BY WIND DIRECTION FOR STA3ILITY CLASS E

(-0.5< DELTA T<- 1.5 C/100 M)

Sequoyah Nuclear Plant JUL 1, 2005 -

SEP 30. 2005 WIND SPEED(MPH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>-24.5 WIND DIRECT::ON TOTAL Di

7. 974 NNE:

4.995 NZ 1.192 ENT 0.458 E

0.4 12 ESE 0.871 SE 0.733 SSE 1.00a S

3.85s0 SSW 3.02S SW 1.H33 WSW 2.016 W

0.917 NW 1

.1 92 N'54 3.025 S113TOTAL 34.372 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.779 6.416 0.642 3.666 0.367 0.550 0.183 0.229 0.000 0.367 0.458 0.367 0.183 0.458 0.229 0.596 0.596 2.475 0.642 2.108 0.412 1.421 0.596 1.146 0.229 0.642 0.275 0.504 0.412 0.596 0.H25 2.016 0.733 0.046 0.550 0.137 0.183 0.092 0.046 0.000 0.046 0.000 0.000 0.046 0.046 0.000 0.092 0.046 0.458 0.137 0.275 0.000 0.000 0.000 0.275 0.000 0.046 0.000 0.046 0.046 0.137 0.000 0.143 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.183 0.000 0.000 0.000 0.n00 0.000 0.C46 O.COO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.030 0.030 0.030 0.030 0.030 0.030 0.0 DO 0.030 0.030 0.01)0

0. 030 0.000 0.0100 0.000 0.000 0.000 0.000 6.829 23.556 3.116 0.550 0.275 0.046 0.000 n.0ooo TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS E TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2183 750 750 2182 0

MET.OROLOGICAL FACILITY:

Sequoyah Nuclear Plant STA3ILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WINO SPEED AND DIRECT ION MEASURED AT 9.73 METER LEVEL 2005/12/05 MEAN WIND SPEED -

2.31 NOTl::

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NlUM2ERS DATE PRINTEDI:

A2-20

JOINT PERCENTAGE FECUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F C 1.5< DELTA T<- 4.0 C/100 M)

Sequoyah Nuclear Plant XJL 1, 2005 -

SE? 30, 2005 WIND SPEED(MPH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 19.5-24.4 W;ND DIRECTION TOTAL

>-24._

N 0.000 0.229 4.170 0.137 4.537 NNE 0.000 1.146 4.995 0.000 6.141 NE 0.000 0.504 0.367 0.000 0.871 ENE 0.000 0.183 0.000 0.000 0.183 E

0.000 0.137 0.092 0.000 0.229 ESE 0.000 0.092 0.046 0.000 0.137 SE 0.000 0.137 0.046 0.000 0.183 SSE 0.000 0.046 D.137 0.000 0.183 S

0.000 0.092 0.09'2 0.000 0.183 SSW 0.000 0.046 0.412 0.000 0.458 SW 0.000 0.092 0.092 0.000 0.13 WSW 0.000 0.046 3.229 0.000 0.275 W

0.000 0.046 3.046 0.000 0.092 WNW 0.000 0.046 0.046 0.000 0.092 NW 0.000 0.000 0.183 0.000 0.183 NNW 0.000 0.092 0.550 0.000 0.642 SUBTOTAL.

0.000 2.933

.503 0.137 14.574 TOTIAL HOUJRS OF VALID STABILITY 03SER.VATIONS TOTtL IIOURS OF STABILITY CLASS F TOTAL UOURS OF VALID WIND DIRECTIO;-WIND SPEED-STABILITY TOT;.L HOURS OF VALID WIND DIRECTIO'-WIND SPEED-STABILITY TOTAL HOURS CALM 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.00OC 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000o 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 0o0 0.000 0.000 0.000 0.0(0
0. 000~

0.0001 0.000 1 0.000~

0.000

0. 0CC1

.0.0c 0.0c:

0.111 o.000 0.000 0.000 0.000 o.co:

2183 318 CLASS F 318 OBSERVATIONS 2182 0

  • METEOROLOGICAL FACILITY:

Seq'soyah Nuiclear Plant STAEILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.93 METERS WINE SPEED AND DIRECTION MEASURED A-9.73 METER LEVEL 2005/12/CS MEAN WIND SPEED -

1.92 NOTE:

TOTALS AND SUBTOTALS ARE OB.AINED FROM UNROUNDED NUDBERS DATE PR;;ED:

A2-21

JOINT PERCENTAGE FREQUZNC'ES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 >)

Sequoyah Nuclear Plant i

JUL 1, 2005 - SEP 30, 2005 WIND DIRECTION TOTAL N

0.000 NNE 0.137 NE 0.000 ENE:

0.000 E

0.000 EST.

0.000 SE 0.c00 SSE S

SSt.

0.000 SW 0.000 WSW 0.000 W

0.000 0.000 NW o.0oo NN-r 0.000 SUBtOT, L 0.137 WIND SPEED (MPH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-13.4 18.5-24.4 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.000 0.000 0.000 0.000 0.000 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.000 0.00(

0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 C. 0C0 0.000 O.000 0.000 0.000 0.000 O.COO 0.000 O.000 0.000 0.000 0.000 O.000 0.000 0.000 0.0DD0 O.0D0

. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0 0 0.000 0.00D 0.00 0.000 0.0)0 0O.00O O.0O0 0.00C 0.0 0o 0.0 00 0.0)0 0.000 0.0)0 0.0c)0 0.0)0 0.000 0.000 0.137 0.000 0.000 0.000 0.000 0.000 0.00)

TOTAL HOURS TOTAL HOURS TOTAL HOURS TOTAL HOURS TOTAL HOURS OF VALID STABILITY OBSERVATIONS OF STABILITY CLASS G OF VALID WIND DIRECTION-WIND SPEED-STAt3;LTTY CLASS C OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS CALM 3

Z 3

21i2 0

METEOROLOGICAL FACILITY:

Seoqoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2005/12/05 MEAN WIND SPEED -

2.00 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NU0MBERS DATE PRINTED:

A2-22

JOINT PERCENTAGE FREQUENZIES OF W:ND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<--1.9 C/100 M)

Sequoyah Nuclear Plant OCT 1, 2005 -

DEC 31.

2005 WIND DIREC"ION TOTAL N

0.092 N:IE 2.069 Ni:

0.690 ENE 0.0 92 E

0.000 EE;E 0.000 SE.

0.000 S E 0.000 S

0.092 S'W 0.414 Si'

0. 644 wi w
0. 138 W

0.0 92 Wh W 0.092 0.0 92 tl W 0.18 4 SUBT0ITAL 4.690 WIND SPEED(MH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

0. 000 0.000 O.000 0.000 0.000 0.000 0.046 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.782 0.322 0.000 0.000 0.000 0.000 0.000 0.000 0.133 0.114 0.04 6 0.000 O.000 0.000 0.046 0.000 1.057 0.322 0.000 0.000 0.000 0.000 0.000 0.0 92 0.184 0.184 0.000 0.046 0.046 0.092 0.046 0.046 0.230
0. G00 0.000 0.000 0.000 0.000 0.000 0.000 0.092 0.276 0.092 0.04 6 0.046 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.00 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

(.000 0.0 00 0.3)00 O. )00 0.300

0. )00
0. 300
0. 300
0. 300
0. )00 0.300 0.300 0.000
0. 000 0.00C 0.)00 0.00)C 0.)00C 0.000 0.000 0.13 1 1.563 2.069 0.920 0.00.^

0.000 0.100^

TCTAL 11OURS OF VALID STABILITY OBSERVATIONS TCTAL HOURS OF STABILITY CLASS A TCTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A TCTAL HOUIRS OF VALID WIND DTRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2178 102 102 2175 0

METEOROLOGICAL FACILITY:

Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2006/02/13 MEAN WIND SPEED -

6.12 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTLD:

A2-23

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B

(-1.9< DELTA T<--1.7 C/100 M)

Sequoyah Nuclear Plant OCT 1,

2005 -

DEC 31, 2005 WIND SE'EED(MEH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>-24.5 I

WIND D:RECT::ON TOTAL N

0.460 NNE 0.966 NE 0.782 ENE:

0.000 E

0.000 ESE:

0.000 SE 0.000 SSE.

0.000 S

0. 131 SSW..

0.506 SW 0.552 Ws, 0.092 W

0.138 WN1TM 0.000 Nw 0.139 NNh 0.000 SUBTOTA.

3.770 0.000 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.414 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.000 0.000 0.000 0.000(

0.000 0

O.000 0.000 0.000 0.506 0.184 0.230 0.04 6 0.000 0.000 0.000 0.000 0.000 0.000 0.230 0.0 92 0.000 0.092 0.000 0.04 6 0.000 0.046 0.000 0.230 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.000 0.000 0.030 0.000 0.C00 0.000 0."46 0.000

0. 046 0.000 0.092 0.000 0.C46 0.000 0.000 0.000 0.032 0.000
0. C) 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.030 0.000 0.030 0.000 0.030 0.000 0.030 0.000 0.030 0.000 0.030 0.000 0.030 0.000 0.0)0 0.000 0.0)0 0.000 0.0)0 1.747 0.920 0.5'4 0.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL hOURS OF STABILITY CLASS B TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABIL:TY CLASS B TOTAL HOURS OF VALOD WIND DOREcIcON-WIND SPEED-STABILITY OBSERVATION:I TOTAL HOURS CALM METEOROLOGICAL FACILITY:

Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2006/02/13 MA-I WIND SPEED -

5.31 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS 2178 H2 82 21.75 0

DATE PRINTED:

A2-24

JOINT PERCENTAGE FRECUENCIES OF WIND SPEED BY W:: D:RZZT;Ol FOR STABILITY CLASS C

(-1.7< DELTA T<--1._ C/100 M)

Secrioyah Nuclear Plant OCT 1. 2005 -

DEC 31, 2C05 WIND S?EED(MH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-19.4 18.5-24.4 WIND DIRECT ION TOTAL

>-24.5 N

0.644 NN" 1.057 NE 0.690 ENl 0.138 E

0.092 ESI 0.04 6 SE 0.046 SSE.

0.000 S

0.230 SSW 0.782 SW 0.591 WSW 0.230 0.092 w NW 0.04 6 NW 0.313 0.046 S-;B.OTI.I.

4. 874 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.o00 0.000 0.000 0.000 0.000 0.046 0.092 0.184 0.046 0.046 0.046 0.000 0.000 0.000 0.092 0.092 0.092 0.000 0.000 0.046 0.000 0.322 0.184 0.322 0.092 0.046 0.000 0.046 0.000 0.134 0.552 0.364 0.092 0.000 0.000 0.046 0.00D 0.138 0.598 0.184 0.000 0.000 0.000 0.000 0.000 0.092 0.046 0.0 92 0.000 0.092 0.04 6

0. 000 0.046 0.138 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.092 0.0-46 0.04-6 0.000 0.000 0.046 0.0(l0 0.000 0.000 0. 000 0.000 0.000 O.00 0.000 0.000
0..00
i.. C 0 S C. eel
. clc:

e.cos 1-. oelc 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0co

0. 000 0.000 0.000
0. 000 0.000 0.000 0.000 0.000 o.0oo
0. 000 0.000
0. 000 0.000 0.000 0.000
0. 000 0.0 00 0.030 0.0)0 0.0o0 0.0o0 0.0o o 0.000 0.000 0.782 2.2)7 1.313 0.552 0.000 0.000 0.030 2171 TOIAL HOURS OF VALID STABILITY OBSERVATIONS TOIAL HOURS OF STABILITY CLASS C TO.AL HOURS OF VALID WIND DIRECTION-WITND SPEED-STAB3LTTY CLASS C TO7AL HIOURS OF VALID WIND DIRECTrON-WIND SPEED-S-ABILITY OBSERVATIONS TOTAL HOURS CALM k..n 2-75 METEOROLOGICAL FACILITY:

Sequoyah Nuclear Plant STABILITY BASED ONJ DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2006/02/13 MEAN WIND SPEED -

5.03 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED:

A2-25

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D

(-1.5< DELTA T<--0.5 C/100 M)

Sequoyah Nuclear Plant OCT

1.

2005 -

DEC 31, 2005 WIND WIND SPEED(MPH)

DIRECTO0N CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>-24.5 TOTAL N

0.000 0.000 0.828 1.241 1.931 0.414 0.000 0.000 0.000 4.414 NNE:

0.000 0.046 1.103 2.069 2.621 0.736 0.000 0.000 0.000 6.575 NE 0.000 0.000 0.552 0.368 0.644 0.138 0.000 0.000 0.000 1.701 ENE; 0.000 0.000 0.138 0.046 0.000 0.000 0.000 0.000 0.000 0.184 E

0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.092 ESE.

0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.092 SSE 0.000 0.000 0.092 0.092 0.000 0.000 0.000 0.000 0.000 0.184 S

0.000 0.000 0.414 0.460 0.506 0.460 0.276 0.000 0.0D0 2.115 SSW 0.000 0.092 0.966 2.115 0.644 0.092 0.000 0.000 0.030 3.908 SW 0.000 0.000 1.057 0.874 0.276 0.138 0.000 0.000 0.030 2.345 Ws, 0.000 0.000 0.552 0.184 0.138 0.032

.0.000 0.000 0.030 0.966 W

0.000 0.13d 0.322 0.092 0.184 0.276 0.000 0.000 0.010 1.011 WNiW 0.000 0.000 0.368 0.368 0.460 0.138 0.000 0.000 0.000 1.333 NW 0.000 0.046 0.368 0.H74 0.460 0.598 0.000 0.000 0.000 2.345 t:lW 0.000 0.000 0.322 0.690 0.874 0.230 0.000 0.0t0 0.000 2.115 SUBTOTI.L 0.000 0.368 7.218 9.471 8.736 3.310 0.276 0.000 0.0n0

29. 371 TO1AL HOURS OF VALID STABILITY OBSERVATIONS 2178 TOTAL HOURS OF STABILITY CLASS D 639 TO1AL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABULTTY CLASS D 639 TO0AL HOURS OF VALID WIND DtRECTMOl-WIND SPEED-STABILITY OBSERVATtONS 2175 TOIAL POURS CALM 0

MEIEOROLOGICAL FACILITY:

Sequoyah Nuclear Plant STPBILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WITD SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED:

2006/02/13 MEAN WIND SPEED -

5.04 NO7E:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A2-26

JOINT PERCENTAGE FRECUENCIES OF WIND SPEED BY W:ND DIRZCT:ON FOR STABILITY CLASS E

(-0.5< DELTA T<-

1.5 C/1C0 M)

Seucpyah Nuclear Plant OCT 1, 2005 -

DEC 31, 2005 WIND DIRECT] ON TOTAL N

6.943 NNE 7.356 NE 1.057 ENE:

0.276 E

0.138 ESE:

0.230 SE

0. 184 0.690 3.310 5s' 4.276 SW 4.598 Ws-o
1. S63 W

1.011 0.m74 NW 1.37)

NN;-

3.448 SrjBTOTT 1.

37.333 WIND SPEED (MPH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>-2 t.5 0.000 0.000 0.000 0.000 0.000 0.COO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.o00 0.414 0.230

0. 138 0.138 0.046 0.046 0.04 6 0.184 0.230
0. 184 0.138 0.046 0.184 0.046 0.046

().2 30 3.908 4.414 0.690 0.138 0.092 0.184 0.138 0.276 1.655 2.621 2.52 9 0.874 0.368 0.230 0.552 1.377 1.793 2.345

0. 184 0.000 0.000 0.000 0.000 0.184 0.644 1.103 1.195 0.414 0.322 0.S06 0.414 1.103 0.782 0.368 0.04 6 0.000 0.000 0.000 0.000 0.04 6 0.552 0.368

.0.598 0.184 0.092 0.046 0.276 0.614 0.046 0.000 0.0CO 0.000 0.000 0.000 0.000 0.000

0. 184 0.000 0.138 0.04 6 0.C46 0.04 6 0.0)2 0.0'92 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0. 000 0.003 0.000
0. COO0 0.0001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.00CO O.030 0.030 0.030 0.000 0.000 0.030 O.030 0.030 0.030 C.030 0.030 O.030 0.030 0.030 0.030 0.030 0.000 2.3 45 20.046 10.207 4.000 0.6-)0 0.046 0.000 0.030 TOIAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL tlOURS OF STABILITY CLASS E TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E TOTAL HOr1RS OF VALTD WIND D;RECTION-WIND SPEED-STABILITY OBSERVATION;S TOTAL HOURS CALM 217d 813 H12 2175 0

METEOROLOGICAL FACILITY:

Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2006/02/13 MEAN WIND SPEED -

3.39 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PR:::TE):

A2-27

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY STABILITY CLASS F

( 1.5< DELTA T<-

Sequoyah Nuclear Plant OCT 1,

2005 -

DEC 31, 2005 WIND DIRECTION FOR 4.0 C/100 M)

WIND DIRECI ION TOTAL N

4.000 NtE 6.115 NE 1.333 Et;E 0.506 E

0.230 ESE 0.032 SE 0.230 SSE 0.276 S

0.552 ssW 1.149 0.874 WSW 0.414 W

0. 138 WNW 0.0')2 0.874 SUBTO A1.

17.103 WIND SPEED (MH)

CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.00(1 0.000 0.184 0.414 0.736 0.414 0.138 0.046 0.230 0.184 0.092 0.046 0.0n92 0.046 0.032 0.0 92 0.0n0o 0.092 3.356 5.609 0.598 0.092 0.0 92 0.046 0.000 0.092 0.460 1.103 0.782 0.3 6 0.046 0.000 0.092

0. s9s 0.414 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.0 32 0.138 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.04 6 0.0(1(

0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 (I.000 0.(446 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.1000

0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0oo 0.00o0 0.1)00 0.300 0.300
0. 300
0. 300
0. 300
0. 300
0. )00
0. 300
0. 300
0. )00
0. 300 0.3)00 0.00
0.

.00

0. 300 0.000 2.897 13.333 0.736 0.092 0.04 6 0.000 0.000 0.300 TCTAL HOURS OF VALID STABILITY OBSERVATIONS TCTAL itOURS OF STABILITY CLASS F TCTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-S.ABILITY CLASS F TCTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-S-ABILTTY OBSERVATIONS TCTAL HOURS CALM 2178 372 372 2175 0

METEOROLOGICAL FACILITY:

Seq'ioyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL 2006/02/13 MEAN WIND SPEED -

2.18 NCTE:

TOTALS AND SUBTOTALS ARE OiTAINED FROM UNROUNDED NUMI3ERS DATE PRINTED:

A2-28

JOINT PERCENTASE FREQUENCIES OF WIND SPEED BY WIND D:RECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

Sequoyah Nuclear Plant OCT

1.

2005 -

DEC 31, 20C5 WIND SPEED(MPH)

WIND DIRECTI0N TOTAL CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>-24.5 N

0.138 NNE 0.598 NE 0.276 ENE 0.138 E

0.046 ESE 0.000 SZ 0.046 SSE 0.046 s

0.322 SSW

0. 59d SW 0.460 WSW 0.04-6 W

0.000 WNW 0.000 NNW 0.04l6 0.092

SUBTOTA, 2.451 0.000 0.000 0.000 0.092 0.000 0.184 0.000 0.138 0.000 0.046 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.092 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.(00 0.000 (I

. 0o0 0.000 0.0 92 0.506 0.092 0.000 0.000 0.000 0.000 0.046 0.230

0. 552 0.276 0.046 0.000 0.000 0.0(146

(.0(0 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.131 0.000 0.000 0.000 0.0ooo 0.(092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Ob.000 0.000 0.000 0.000 0.00(0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.COO 0.000 0.000 0.000 0.000 0.000 0.000

0. ^00 0.0C0 0.000 0.000 C.^00 0.000 0.000 0.0C0 0.3000 0.000 0.300 0.0^0 0.000 0.000 0.0CO o.0"0C 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0C0 0.0C0 0.OCO 0.0c0 0.Oco 0.Oco 0.Oco 0.0CC 0.010 0.010 0.010 0.010 0.010 0.0Co 0.0CC 0.0CC 0.000 0.690 1.d15 0.276 0.000 0.00' 0.3000 0.000 0.0cC TOTAL HOtJRS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS C TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STAB3LITY CLASS C TOTAL HOURS OF VALID WIND DIRECTION-WlND SPEED-STABILITY OBSERVATION3 TOTAL HOURS CALM METEOROLOGICAL FACILITY:

Seqsjoyah Nuclear PlAnt STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED ASD DIRECTION MEASURED AT 9.73 METER LEVEL 2006/02/.3 MEAN WIND SPEED -

2.16 NOTi:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS 217d 62 62 2175 0

DATE PRINTEZ:

A2-29

.0 Deviations from ODCM Controls/Surveillance Requirements Date ODCM Description of Deviation

.Requiremen June 29, 1/2 1.1.1 Engineering notified Operations that with water flowing over Gate 2005 Table 1.1-1 Structure #1 weir the required 15,000gpm dilution flow may not Item 3.d be available even though plant compliance instrument Action 33.

0-LS-27-225 indicates >15,000 gpm. PM 058610000 for cleaning the blowdown strainer was revised and placed on 48 week frequency. EWR 06-BOP-027-012 was issued.

Dec. 20, 1.1.2 Radiation Monitor 0-RM-90-1 01 (Auxiliary Building Stack) was 2005 Table 1.1-2 removed from service to perform an IFT. Chemistry did not install Item 4.b and back-up sampler within the required 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> time. PER 94285.

c. Action 44 _

A2-30

.0 Radiation Monitors Inoperable for Greater than 30 days None Compliance Instruments Inoperable for grater than 30 days 0-LS-27-225 (Cooling Tower Blowdown Effluent Line) PER 85280.

A3-1

ENCLOSURE 3 OFFSITE DOSE CALCULATION MANUAL REVISION 48 SEQUOYAH NUCLEAR PLANT I~-

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