ML18019A399

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Rev 1 to Vol 2,Part 5 of Plant Emergency Procedure PEP-341, Manual Dose Calculation.
ML18019A399
Person / Time
Site: Harris Duke Energy icon.png
Issue date: 08/13/1985
From: John Miller
CAROLINA POWER & LIGHT CO.
To:
Shared Package
ML18019A398 List:
References
PEP-341-PT05, PEP-341-PT5, NUDOCS 8510010288
Download: ML18019A399 (25)
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Text

th APR014 CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT PLANT OPERATING MA%JAL VOLUME 2 PART 5 PROCEDURE TYPE: PLANT EMERGENCY PROCEDURE (PEP)

NUMBER: PEP-341 TITLE: MANUAL DOSE CALCULATION REVISION 1 APPROVED:

Signature Date TITLE: L L WILUS, PLANT GENERAL NNAGER 8510010288 8050.Wb00400, pgg ADOCK pn~

~ F Page 1 of 22

Ff' APR014 TABLE OF CONTENTS

~Pa e Table oi Contents 2 List of Effective Pages 3 1.0 PURPOSE 4

2.0 REFERENCES

4 2.1 Emergency Plan References 4 2.2 Referenced Plant Emergency Procedures 4 2.3 Other References 4 3.0 RESPONSIBILITIES 4 3.1 Site Emergency Coordinator 3.2 Dose Pro/ection Team Leader 5 4.0 DEFINITIONS 5 5.0 GENERAL 5 5.1 Calculations 5.2 Release Pathways 6.0 INITIATING CONDITIONS 7.0 PRECAUTIONS AND LIMITATIONS 6 8.0 SPECIAL TOOLS AND EQUIPMENT 6 9.0 PROCEDURE STEPS 6 10.0 DIAGRAMS/ATTACHMENTS 14

1. Manual Dose Pro)ection Record Sheet 15
2. Meteorological Dispersion (X/Q) Value at SHNPP Plant Boundary 18
3. Dose Conversion Factors 19
4. Extrapolation Factors for Estimating Doses Beyond SHNPP Plant Boundary 20 Source Activity Vorksheet 21 Affected, Downwind Sectors 22 PEP-341 Rev. 1 Page 2 of 22 I

~

l'PR014 LIST OF EFFECTIVE PAGES

~Pa e Revision 1 through 22 PEP-341 Rev. 1 Page 3 of 22 I

APR014 1.0 PVRPOSE The purpose of this procedure is to partially implement Section 4.4.3, "Dose Projection," of the SHNPP Emergency Plan, which is a regulatory commitment.

This procedure provides instructions to perform a manual calculation of projected off-site doses. This procedure is used when computer-ized systems are not available, and therefore PEP-342 or PEP-343 cannot be used. It can be used when various systems or pieces of equipment are not functioning, or when monitor readings are suspect or off-scale.

2.0 REFERENCES

2.1 Emer enc Plan References

1. Section 4.4.3, "Dose Projection"
2. Annex B, "Technical Basis of Emergency Dose Projection Program" 2.2 Referenced Plant Emer enc Procedures
1. PEP-101, "Emergency Classification and Initial Emergency Actions"
2. PEP-216, "Dose Projection Team Leader"
3. PEP-343, "Automation of Dose Projection IBM PC"
4. PEP-104, "Protective Action Recommendations".
5. Plant Special Order, "Emergency Phone List" 2.3 Other Develo mental References
1. VSNRC Regulatory Guide 1.109
2. SD-118, "Radiation Yionitoring"
3. Affidavit of Robert G. Black, Jr. on Eddleman 154 before the Atomic Safety and Licensing Board d-ted October 8, 1984.

3.0 RESPONSIBILITIES PEP-341 Rev. 1 page 4 of 22

APR014 3.1 Site Emer enc Coordinator The Site Emergency Coordinator - Control Room is responsible for implementing, this procedure if the Technical Support Center has not been activated.

3.2 Dose Pro ection Team Leader The Dose Projection Team Leader is responsible for implementing this procedure after the Technical Support Center is activated.

4. 0 DEFINITIONS None Applicable 5.0 GENERAL 5.1 Calculations The dose rate due to gaseous effluents at a given point downwind resulting from an identified release is calculated by the formula:

D ~ X/Q ~

Q

~

DCF ~ R where D is the dose rate in rem/hr, X/Q is the atmospheric dispersion factor in units of sec/Ms at the plant boundary, Q is the source term in Ci/sec, rem/hr DCF is the dose conversion factor in 3 Ci/m and R is a factor that adjusts X/Q for distance from the plant boundary.

The total dose ra'te at a given point is calculated by summing the source terms for each identified release pathway, and calculating the dose rate by the above formula.

The affected downwind sectors and the atmospheric dispersion factors (X/Q) at a given distance downwind are determined directly from tabular data as functions of atmospheric stability and wind speed.

Isotopic mix affects both the dose conversion factor (DCF), and the source term (Q) if source term is determined from an installed radiation monitor. If an isotopic analysis is available, it is used to calculate the source term. The dose conversion factor is determined from tabular data as a function of time after reactor shutdown. The table assumes a design basis isotopic release mix of 100 percent of the core gap inventory of noble gases and 25 percent of the halogens, and adjusts the mixture for decay. When determined from installed radiation monitors, determination of source term assumes that noble gas detectors respond to noble gas activity only, PEP-341 Rev. 1 Page 5 of 22

APR014 CALCULATIONS (cont'd) that the containment area monitors and main steam line monitors respond to both iodine and noble gas activity, and that iodine activity is 15X of the total activity.

5.2 Release Pathwa s

1. Containment leakage directly to the atmosphere is assumed to be occurring at the rate of 0.1 percent of the free volume per day for the first 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> following an accident and at 0.05 percent per day thereafter. This leakage is assumed even if the containment status is considered "Intact" in accordance with PEP-101 and PEP-104.
2. Primary to secondary leakage is assumed to be released to the atmosphere via the atmospheric steam dump valves and/or steam generator relief valves whenever there is indication that any of these valves are open. The source term for this release is determined from the measured or design flow rate through these valves, and either readings on the main steam line radiation monitors or analysis of a condensed steam sample.

3 ~ Releases are assumed to be occurring at some or all of the four plant exhaust ventilation stacks in all cases. The source terms for these releases are determined by either measured or design ventilation flow rates and measured activity concentrations.

6.0 INITIATING CONDITIONS

1. Immediately after recognition that an unplanned off-site release has occurred, could have occurred, or may occur, this procedure should be implemented if automated dose projection methods are not available.

7.0 PRECAUTIONS AND LIMITATIONS None Applicable 8.0 SPECIAL TOOLS AND E UIPMENT

1. Scientific calculator that can handle exponential functions (i.e., 2 x 10 ).

9.0 PROCEDURE STEPS

l. Enter the date, time, and your name on a blank copy of Attachment 1, "Manual Dose Projection Record Sheet".
2. Determine the release flow rates using the following steps. Within each step, the available methods are listed in order of preferred use.

APR014 9.0 PROCEDURE STEPS

a. For primary to secondary to atmosphere leakage via steam dump or relief valves:
1. Obtain the steam flow readings in units of million pounds mass per hour (MLbm/hr) and record on Attachment 1, lines 5, 9, and 13. Multiply by 1.26 E+5 to convert to grams per second and record the resulting mass flow rate on those lines.

OR Record on Attachment 1, lines 2, 3, 4, 6, 7, 8, 10, ll and 12 the quantity of each type of valve that indicates open. Multiply the number of valves open by the design flow rates (given on Attachment 1) to obtain the total mass flow rate for each type of valve in grams per second and record the result on each line. Add the flow rates on lines 2, 3, and 4 and enter the sum on line 5. Repeat this addition for main steam lines B and C, entering the sum of lines 6, 7, and 8 on line 9, and the sum of lines 10, 11, and 12 on line 13.

2. If the activity concentration is to be determined from the Radiation Monitoring System, select the specific volume from the table in block 14, Attachment 1 corresponding to the indicated steam pressure and record those values in cubic centimeters per gram in the space provided on lines 5, 9, and 13 of Attachment 1. Multiply the steam mass flow rate in grams per second by the specific volume in cubic ce'ntimeters per gram to obtain the flow rates in cubic centimeters per second, and record those values in the space provided on lines 5, 9 and 13.
b. For ventilation exhaust:
1. Obtain the readings if available in cubic feet per minute from the Radiation Monitoring System.

OR Assume the maximut.'esign flow rate:

vent stack 1 390,000 cfm vent stack 3A 22,650 cfm vent stack 5 - 207,000 cfm vent stack 5A 103,500 cfm PEP-341 Rev. 1 Page 7 of 22

APR014 9,0 PROCEDURE STEPS 2 ~ Record the flow rates in cubic feet per minute on Attachment 1, lines 18 through 21.

C For containment leakage, select 736 cubic centimeters per if it

~

second is less than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> since the accident began, or 368 cubic centimeters per second if it is greater than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> since the accident began. Circle the selected value on Attachment 1, line 22.

3. Determine the source terms using the following steps, which are listed in the order of preferred use to obtain the most rapid results.

a ~ If Radiation Monitoring System data is available:

Obtain the main steam line radiation monitor readings in microcuries per cubic centimeter (uCi/cc) and reco'rd these values on Attachment 1, lines 15, 16 and

17. Circle the units uCi/cc. Multiply by 1.0 E-6 to convert to curies per cubic centimeter (Ci/cc), then by the release flow rates in cubic centimeters per second (cc/sec) to obtain the whole body source term in curies per second (Ci/sec), and record the results in the space provided on Attachment 1, lines 15, 16 and 17. Multiply each whole body source term by 0.176 to obtain the child thyroid source terms and record them in curies per second on the same lines.
2. Obtain the noble gas radiation monitor readings in microcuries per cubic centimeter (uCi/cc) for each vent stack, and record them in the space provided on Attachment 1, lines 18 through 21. Multiply by 1.0 E-6 to convert to curies per cubic centimeter (Ci/cc), multiply that product by the previously recorded flow rate in cubic feet per minute, then multiply by 472 to convert cubic feet per minute to cubic centimeters per second. Record the resulting whole body source terms in curies per second (Ci/sec) on Attachment 1, lines 18 through 21. Multiply each whole body source term by 0. 176 to obtain the child thyroid source terms and record the results on the same lines.
3. Obtain the highest containment high range area radiation monitor reading in R/hr and record on Attachment 1, line 22. Multiply by 9.43 E-4 to convert R/hr to uCi/cc noble gas and record this product on the same line. Multiply by 1.0 E-6 to convert microcuries to curies, then by the previously PEP-341 Rev. 1 Page 8 of 22

~ ~ ~

~

9.0 PROCEDURE STEPS circled flow rate in cubic centimeters per second (cc/sec) to obtain the ~hole body source term in curies per second (Ci/sec) and record on line 22.

Multiply the whole body source term by 0.176 to obtain the child thyroid source term in curies per second (Ci/sec) and record on the same line.

b. If the Radiation Monitoring System readings are not available for one or more release pathways:
1. Obtain the results of an isotopic analysis of a grab sample for each release pathway. Record those results in column 2 on a separate Source Activity Worksheet, Attachment 5, for each sample. Check the appropriate block(s) at the top of each form to ind'cate which release pathway the sample represents.

Enter on each form on line 1 the expected time of release (use the current time if a release is underway), and the time of sample collection (if the sample was not corrected for decay between the time of collection and analysis, use the time of analysis). Subtract to determine the decay time in hours until release, and record oa Attachment 5, line 1.

2. Using the decay time in hours determined above, the decay constants listed in column 3 of Attachment 5, and the isotopic activities recorded in column 2, calculate and record in column 4 the decay corrected activity for each isotope using the following formula:

A A e

-Xt t o where A is the decay corrected activity in microcuries per cubic centimeter (uCi/cc)

A 0

is the activity reported from the grab sample in microcuries per cubic centimeter (uCi/cc) is the1decay constant for an isotope in hours (given in column 3 of Attachment 5) and t is the decay time in hours between release and sample collection (or analysis) (Line 1)

3. Add the column 4 values for the Iodine isotopes on lines 2 through 6 and enter the sum on line 7, column Add the noble gas column 4 values on lines 8 through 19 and enter the sum on line 20, column 4.

PEP-341 Rev. 1 Page 9 of 22

~ ~ ~ ~

APRO14 9.0 PROCEDURE STEPS

4. Enter the noble gas activity totals from the Attachments 5, line 20, column 4 on the appropriate lines 15 through 22 of Attachment 1. For main steam line activities, also circle the units uCi/gm. Enter the Iodine activity totals from Attachments 5, line 7, column 4 in the space immediately above the noble gas totals on Attachment l.
5. On lines 15, 16 and 17 of Attachment 1 multiply the decay corrected noble gas activities in microcuries per cubic centimeter (uCi/cc) by 1.0 E-6 to convert microcuries to curies, then by the previously entered flow rates in grams per second (gm/sec) to obtain the whole-body source term in curies per second (Ci/sec) and record in the Q Whole Body column. DO NOT multi'ply the whole body source term by 0.176.

Instead, multiply the Iodine activity that was written in above the noble gas activity by 1.0 E-6 to convert uCi to Ci, then by the flow rate in grams per second to obtain the child thyroid source term in Curies per second and record in the Q Child Thyroid column.

6. On lines 18 through 21 of Attachment 1, multiply the decay. corrected noble gas activities by 1.0 E-6 to convert microcuries to curies, by the previously recorded flow rates in cubic feet per minute, then by 472 to convert cubic fee- per minute to cubic centimeters per second, and record the product in curies'er second in the Q Whole Body column. DO NOT multiply the whole body source term by 0.176.

Instead, multiply the Iodine activity that was written in the space above the noble gas activity by 1.0 E-6 to convert microcuries to curies, by the flow rate in cubic feet per minute, then by 472 to convert cubic feet per minute to cubic centimeters per second, and record the result in curies per second in the Q Child Thyroid column.

7. On line 22 of Attachment 1, multiply the noble gas activity by 1.0 E-6 to convert microcuries to curies, then by the previously circled flow rate in cc/sec, and record the product in curies per second (Ci/sec) in the Q Whole Body column. DO hOT multiply the whole body source term by 0.176. Instead, multiply the Iodine activity that was written in the space above the noble gas activity by 1.0 E-6 to convert microcuries to curies, then by the flow rate in CC/sec, and record the product in curies per second (Ci/sec) in the Q Child Thyroid column.

PEP-341 I

Rev. 1 Page 10 of 22

~ ~ ~ ~

APR014 9.0 PROCEDURE STEPS C ~ Add the amounts in the Q Whole Body column on Attachment 1, lines 15 through 22, enter the sum on line 23, and transcribe the line 23 sum to line 27.

Add the amounts in the Q Child Thyroid columns on Attachment 1, lines 15 through 22, enter the sum on line 23, and transcribe the line 23 sum in Ci/sec to line 32.

4. Obtain wind speed, wind direction, stability class and atmospheric dispersion factor (X/Q):

NOTE:The following steps are applicable to dose projections for releases that are immediately imminent or already underway. If the calculation you are performing is for an anticipated release that is not expected to occur for more than one hour, use steps 2 or 3 below but request forecast data for the expected time of release instead of current data. If the forecast is obtained from the National Weather Service and calls for no change from existing conditions, use the current data, if available per step 1, in preference to determining the atmospheric dispersion factor (X/Q) as described in step 3.

a ~ Call Radiation Control and request the SHNPP onsite meteorological data for the lower level wind speed, lower level wind direction, stability class, and atmospheric dispersion factor from the Radiation Monitoring System report processor (RM-21). Record those parameters on Attachment 1, lines 24, 25 and 26.

b. If data is not available from the RM-21, call the Corporate Weather Center and request the current lower level wind speed, lower level wind direction, and atmospheric stability class for the Harris plant. Record those parameters on Attachment 1, lines 24 and 26.

Determine the atmospheric dispersion factor (X/Q) from the table in Attachment 2 and record it on Attachment 1, line 25.

C ~ If both the Radiation Monitoring System and the Corporate Weather Center are unavailable, call the National Weather Service at the Raleigh-Durham airport and request to speak to the forecaster on duty. Request from the forecaster the current wind direction a'nd wind velocity as recorded at the airport observation station, and an estimate of the atmospheric stability for the lowest 1000 feet of the atmosphere. Record this information on Attachment 1, lines 24 and 26. Determine the atmospheric dispersion factor (X/Q) from the table in Attachment 2 and record it on Attachment 1, line 25.

PEP-341 Rev. 1 Page 11 of 22

APR014 9.0 PROCEDURE STEPS

d. If the Radiation Monitoring System, the Corporate Weather Center and the National Weather Service are unavailable, determine wind speed and wind direction and atmospheric conditions from visual observations outdoors and use the table below to determine stability class:

Atmos heric Conditions Clear Cloudy Clear Cloudy Wind ~Da ~Ra ~Ni ht ~NS ht ~Ratntn Light or Calm C F E D

(< 9 mph)

Moderate or Strong C

(> 9 mph)

Determine the atmospheric dispersion factor from Attachment 2, using 1 mph for light or calm winds, 9 mph for moderate winds, and 15 mph for strong winds, and record it on Attachment 1, line 25.

NOTE:Wind speed and direction may be estimated by observing the wind sock located at the Chlorine Storage Building, which is visible from the Turbine Building by looking East between the Cooling Tower and Diesel Generator Buildings, or from the Fuel Handling Building Roof.

The wind sock points in the direction that the wind is blowing towards. If the angle between the rigid horizontal "head" of the sock and its tail is 0 - 30 degrees, the wind is "strong" and may be estimated at 15 mph. If the angle is 30- 60 degrees, the wind is "moderate" an'd may be estimated at 9 mph. If the angle is greater than 60 degrees, the wind is "light" or "calm" and may be estimated at 1 mph.

3

5. Transcribe the Atmospheric Dispersion Factor in sec/m from line 25 of Attachment 1 to lines 27 and 32.
6. Select Dose Conversion Factors from the table in Attachment 3 corresponding to the time in hours since reactor shutdown that the release will occur. Use the.

present time is a release is 'already occurring. If the time falls between two times in the table, use the next shorter time for the whole body dose conversion factor and the next longer time for the child thyroid dose conversion factor. If the time since reactor shutdown cannot be determined, use 4.72 E+2 for whole body and 3.42 E+6 for child thyroid. Record the whole body dose conversion PEP-341 Rev. 1 Page 12 of 22 I

APR014 9.0 PROCEDURE STEPS factor in rem/hr per Ci/m 3 on Attachment 1, line 27 and the child thyroid dose conversion factor on line 32.

7. Calculate the child thyroid dose commitment rate and the whole body dose rate at the plant boundary by multiplying the source term in Ci/sec by the Atmospheric Dispersion Factor in sec/m , then by the dose conversion factor in rem/hr per Ci/m on lines 27 and 32 of Attachment l.

Record the products in rem/hr.

Enter the known or estimated release duration in hours on those lines, then multiply the exposure rates in rem/hr by the duration to obtain the integrated doses in rem.

Record the integrated doses in the last column of lines 27 and 32 on Attachment 1.

8. Using the stability class from Attachment 1, line 26, determine from the table in Attachment 4 the extrapolation factors for distances of 1.3, 2, 5 and 10 miles. Enter the factor for 1.3 miles on lines 28 and 33 of Attachment 1, for 2 miles on lines 29 and 34, for 5 miles on lines 30 and 35, and for 10 miles on lines 31 and 36.
9. On each of lines 28 through 31, multiply the extrapolation factor by the dose rate in rem/hr from line 27 to obtain dose rates, and by the integrated dose in rem from line 27 to obtain integrated doses at the specified downwind distances. Record those values in the space provided on lines 28 through 31 of Attachment 1.
10. On each of lines 33 through 36, multiply the extrapolation factor 'by the dose rate in rem/hr from line 32 to obtain dose rates, and by the integrated dose in rem from line 32 to obtain integrated doses at the specified downwind distances. Record those values in the spaces provided on Attachment 1, lines 33 through 36.

Immediately deliver the completed record sheet, Attachment 1, to the Dose Pro-ection Team Leader or Site Emergency Coordinator.

12. If requested, use Attachment 6 to estimate the affected downwind sectors, and inform the Dose Pro5ection Team Leader or the Site Emergency Coordinator.

PEP-341 Rev. 1 Page 13 of 22

APR014 10.0 DIAGRAMS/ATTACHMENTS

1. Manual Dose Pro)ection Record Sheet
2. Meteorological Dispersion (X/Q) Values at SHNPP Plant Boundary (0.47 miles)
3. Dose Conversion Factors
4. Extrapolation "Factor for Estimating Doses Beyond SHNPP Plant Boundary (0.47 miles)
5. Source Activity Worksheet
6. Affected Downwind Sectors PEP-341 Rev. 1 Page 14 of 22

APR014 Attachment 1 Sheet 1 of 3 MANUAL DOSE PROJECTION RECORD SHEET AFRO)C Fo. PEF-3C)-)-) SEret 1 c5f 3 NA.'6".'AY DOSE PROJECTION RECOR." SVEET

,DATE FINE PEB SAYED BY Y<<AIN STEAN LIVE A ~

PORT OPEN x 5.82 Eel~ sec SAFE IES OPEN 2.22 E I ~ CC A .. DEIrS OP Fx

  • B.BI E I c

). )5" CC FY O'A'ATE hc x 1.26 E 5 X

~N;c SCC v<<AIN STEAv LINE B POR'7 OPEN x 5.82 EiC SAFETIES OPEN x 1.22 I-A~s.. DLYPS OPEN SeC Y'=

FLO" RATE E secx c 1 ccr )C v<<A )<<ST~v Nr C

10. p<< E sec I. "E 5-<<c E=
12. A~ '. OPEN x 8.88 E sec Y~b CC I.FI E 5 sec F!oci. !(

cc Ig c ~rv RREcc,pr

)00 20G 300 SFENCIFI'C SY'ecx 133 9).9 VC'.'vr S r~v. P RE 9 80(

900

)OGG c:7 CC<<P'FEC:F'IC 35.0 3C.

2<<.l C

'VO '.'BP:-

400 gc<<9 l)00 500 55.9 )200 22.)

f500 CE ] 301 20 ~ A 700 )CG" )S.C PEP-341 Rev. 1 Page 15 of 22 I

~ ~

APR014 Attachment 1 Sheet 2 of 3 MANUAL DOSE PROJECTION RECORD SHEET Fore PEP-3C 2- l-l lW~CAI ECSE P((OJECTlOS RECOPY ShEc'l S(cet 20! 3 O O l v DI CC I

-Ii vi" I" vl 0 V V V C' V L I 0 0 0 I V V!>> V D

/v  !

CI V CC tV EI 0I 0 K K C0 C0 Q

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CC 0'>> 0 CC CC C

CV I I- CC 0

Dl= L I

C n( K K

V, Dlv Dl DI CC i" t

( 0( L 0

0I l 0 ~C I

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- D'I,I CV

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,V ,V CC I ~

IL'C X X I X I

IL' C C CC CL (

V.

I IL CC tl' W IL' I

Z X CC I

X v; X

C C X 0 X CC PEP-341 Rev. 1 Page 16 of 22

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APR014 Attachment 1 Sheet 3 of 3 MANUAL DOSE PROJECTION RECORD SHEET Fcrr PEF-34'-1 I Sheet 3 c! 3 YAK":AL DOSE PPOOECTIOS RKCOR" SPEEI

24. VI h~i SPEED aph 'VFBD DIRECTIOR (FROH} scc
25. ATHh SPHERIC Dl SPERSIOS FACTOR (X/Q)- 13 (Ftor RH-21, or Attach-"ent 2 and Stabflfty Class belov)
26. STABILITY CLASS (Fror Corporate Hetcorology Center or table bclov)

CLEAR CLOUDY CLL& CLOUDY VIhD DAY DAY Hl CHT 51GHT RAIS SO Light or Cslr. <5 rph B C E E Hcaerste or Strong >B rph C D D D D LADLE BODY P~h BOUHDARY (0.47sccr.:LES) rcc.pr Cf 3

rer scc x tt x Cf/r3 hr x rcr Line 23 Line 25 Att. 3 Ih ra for.

EXCLUSIOH AREA (SITE) BOUhsARY (1.3 HILE Extrspclstfon rc

28. Fsctort rer Attschnent 4 2 HILES

'er Extrapclatfon T c'r Factor: hr A't tac,went 5 Y/ILES Extrap:lation Tcr Factor: hr

~

ac I IO H LES Extrapelcpf c Tc 31 ~ FdctoTt Ir CHI' Ti'YROID P x. ~'h>~ ARI . r.:LES) scc rer.hr Tcr 3

32 cc Ci/ 3 - hr

  • h." ~ r Lfne fne 25 Att. 3 h r rj EXCLUS~~. APLA (SITE) BOURDARY (1.3 HILES)

Extrapolstior.

Factott hr At --'-e-2Y,:Ec Extrapclatfon Tc

34. Factor: hr Te Atra .i~crt 4 5 Hh" Ec Extrap-latfon TC
35. Fsctort hr Attach=co 4 lO HILES Extrapnlatfor. Te Factor: hr Tc Attachrent 4 PEP-341 Rev. 1 Page 17 of 22

APR014 ATTACHMENT 2 METEOROLOGICAL DISPERSION (X/Q) VALUES AT SHNPP PLANT BOUNDARY (0.47 MILES) GROlihD LEVEL RELEASE X/Q Values by Atmospheric Stability Class (Units: sec/ms)

NOTE: If wind speed is between adjacent values, use the lower value to find X/Q.

Stability Class Vind Speed mph m/sec A 1 0.4 1.80E-05 7.19E-05 1.84E-04 5.12E-04 1.07E-04 2.46E-03 6.15E-03 2 0.9 8.98E-06 3.59E-05 9.22E-05 2.56E-04 5.33E-04 1.23E-03 3.07E-03 3 1.3 5.99E-06 2.40E-05 6.14E-05 1.71E-04 3.55E-04 8.20E-04 2.05E-03 4 1.8 4.49E-06 1.80E-05 4.61E-05 1.28E-04 2.66E-04 6.15E-04 1.54E-03 5 2.2 3.59E-06 1.44E-05 3.69E-05 1.02E-04 2.13E-04 4.92E-04 1.23E-03 6 2.7 2.99E-06 1.20E-05 3.07E-05 8.54E-05 1.78E-04 4.10E-04 1.02E-03 7 3.1 2.57E-06 1.03E-05 2.63E-05 7.32E-05 1.52E-04 3.51E-04 8.78E-04 8 3.6 2.25E-06 8.98E-06 2.30E-05 6.40E-05 1.33E-04 3.07E-04 7.69E-04 9 4.0 2.00E-06 7.98E-06 2.05E-05 5.69E-05 1.18E-04 2.73E-04 6.83E-04 10 4,5 1.80E-06 7.19E-06 1.84E-05 5.12E-05 1.07E-04 2.46E-04 6.15E-04 11 4,9 1.63E-06 6.53E-06 1.68E-05 4.66E-05 9.69E-05 2.24E-04 5.59E-04 12 5.4 1.50E-06 5.99E-06 1.54E-05 4.27E-05 8.88E-05 2.05E-04 5. 12E-04 13 5.8 1.38E-06 5.53E-06 1.42E-05 3.94E-05 8.20E-05 1.89E-04 4.73E-04 14 6.3 1.28E-06 5. 13E-06 1.32E-05 3.66E-05 7.61E-05 1.76E-04 4.39E-04 15 6.7 1.20E-06 4.79E-06 1.23E-05 3.41E-05 7.10E-05 1.64E-04 4.10E-04 16 7.2 1.12E-06 4.49E-06 1.15E-05 3.20E-05 6.66E-05 1.54E-'04 3.84E-04 17 7.6 1.06E-06 4.23E-06 1.08E-05 3.01E-05 6.27E-05 1.45E-04 3.62E-04 18 8.0 9.98E-07 3.99E-06 1'.02E-05 2.85E-05 5.92E-05 1.37E-04 3.42E-04 19 8.5 9.46E-07 3.78E-06 9.70E-06 2.70E-05 5.61E-05 1.29E-04 3.24E-04 20 8.9 8.98E-07 3.59E-06 9.22E-06 2.56E-05 5.33E-05 1.23E-04 3.07E-04 21 9,4 8.56E-07 3.42E-06 8.78E-06 2.44E-05 5.07E-05 1.17E-04 2.93E-04 22 9' 8.17E-07 3.27E-06 8.38E-06 2.33E-05 4.84E-05 1.12E-04 2.80E-04 23 10.3 7.81E-07 3.12E-06 8.01E-06 2.23E-05 4.63E-05 1.07E-04 2.67E-04 24 10.7 7.49E-07 2.99E-06 7.68E-06 2.13E-05 4.44E-05 1.02E-04 2.56E-04 25 11.2 7. 19E-07 2.87E-06 7.37E-06 2.05E-05 4.26E-05 9.84E-05 2.46E-04 26 11.6 6.91E-07 2.76E-06 7.09E-06 1.97E-05 4. 10E-05 9.46E-05 2.37E-04 27 12.1 6.66E-07 2.66E-06 6.83E-06 1.90E-05 3.95E-05 9.11E-05 2.28E-04 28 12.5 6,42E-07 2.57E-06 6.58E-06 1.83E-05 3.80i-05 8.78E-05 2.20E-04 29 13.0 6.20E-07 2.48E-06 6.36E-06 1.77E-05 3.67E-05 8.48E-05 2. 12E-04 30 13.4 5.99E-07 2.40E-06 6.14E-06 1.71E-05 3.55E-05 8.20E-05 2.05E-04 PEP-341 Rev. Page 18 of 22 l

APR014 ATTACHMENT 3 DOSE CONVERSION FACTORS Time After rem/h Reactor Ci m Shutdo~m Dose Conversion Factor (DCF)

(hours) 0.0 6.33E+5 4.72E+2 0.5 7.14E+5 4.23E+2 1.0 7.89E+5 3.44E+2 2.0 9.18E+5 3.54E+2 5.0 1.18E+6 2.59E+2 8.0 1.35E+6 1.87E+2 12.0 1.53E+6 1:22E+2 24.0 1.95E+6 4.24E+1 72.0 2.92E+6 1.77E+1 96.0 3.15E+6 1.77E+1 120 3.28E+6 1.77E+1 144 3.35E+6 1.77E+1 168 3.39E+6 1.77E+1 192 3.40E+6 1.77E+1 216 3.41E+6 1.77E+1 240 3.41E+6 1.77E+1

~240 3.42E+6 1.77E+1 PEP-341 I

Rev. 1 Page 19 of 22

APR014 ATTACHMENT 4 EXTRAPOLATION FACTOR FOR ESTIMATING DOSES BEYOND SHNPP PLANT BOUNDARY (0.47 MILES) GROUND LEVEL RELEASE Distance from Plant Extra olation Ratios b Atmos heric Stabilit Class Miles KH A B C D E F 1 1.6 1.0E-01 2.2E-01 2.5E-01 2.9E-01 2.8E-01 2.8E-01 2.8E-01

  • 1.3 2.1 4.6E-02 1.3E-01 1.6E-01 2.0E-01 1.9E-01 1.9E-01 1.9E-01 2 3.2 1.3E-02 5.6E-02 7.2E-02 1.0E-01 1.0E-01 1.0E-01 1.0E-01 3 4.8 3.7E-03 2.5E-02 3.5E-02 5.5E-02 5.7E-02 5.9E-02 5.9E-02 4 6.4 1.6E-03 1.4E-02 2.1E-02 3.6E-02 3.8E-02 4.1E-02 4.0E-02 5 8.0 8.0E-04 9.0E-03 1.4E-02 2.6E-02 2.8E-02 3.0E-02 3.0E-02 6 9.7 4.6E-04 6.2E-03 9.8E-03 2.0E-02 2.2E-02 2.4E-02 2.4E-02 7 11.3 2.9E-04 4.6E-03 7.4E-03 1.6E-02 1.8E-02 2.0E-02 2.0E-02 8 12.9 2.0E-04 3.5E-03 5.9E-03 1.3E-02 1.5E-02 1.7E-02 1.7E-02 9 14.5 1.4E-04 2.8E-03 4.7E-03 1.1E-02 1.3E-02 1.4E-02 1.4E-02 10 16.1 1.0E-04 2.3E-03 3.9E-03 9.3E-03 1.1E-02 1.3E-02 1.3E-02
  • Exclusion Area Boundary Site Boundary PEP-341 Rev. 1 Page 20 of 22

s APR014 ATTACHYENT 5 SOURCE ACTIVITY WORKSHEET Form PEP-34)-$ -) SOCRCE ACTI'r)TY hORKSHEET FOR RELEASE PATNVAY:

Q )BIN STEA~ LINE OA D) 0 VENT STACK 01 G3A 0$

0 CONTAINMKNT LEAYAGE Sample Tiz,e Tfme of Release D cay yi y y~

(2) (3) (4)

A A

-1 t Specific hrs Decay Actlvlty Decay Corrected of Sample Corsta-t Ac"tivfty Iscto e uCI/cc for Isoto e mC)/cc

2. 1-13) 3.59E-3
3. 1-132 3.07E-01
4. 1-133 3.4)K-2
5. 1-)34 7.97E-1
6. )-)35 ).0'.

TOTAL IODINE ACT YI&

6. Rr-63m
9. Rr-85
10. Rr-65m KE-1
11. 5.46K-)

12 2.44K-1

13. Rr- ).3)K-)
14. Xe 2.44K-3

)5. Xe-133 5.50E-3

16. Xe-)33r. 1.32E-2
17. Xe-135 7.61E-2
18. Xe-135r 2 7:EK.
19. Xe-)3& 2. 9-K~
20. TO.A'QSLK CAS ACT)YI Y u()/cc PEP-341 Rev. 1 Page 21 of 22

AFR014 Attachment 6 AFFECTED DOl".ih'IhD SECTORS Vl h> AFFECT ." ¹i'Fi:ihv SECTORS 771 RECT10NS (FRY)~ N hNE NE ENE E ESE SE SSE S SSV SV VSL V MNV hV hhV 349-! 1 0 X X X 0

)1 34 0 X X X 0 33-36 0 X X X 0 57-79 0 X X X 0 80-101 0 X X X 0 102-124 0 X X X 0 125-146 0 0 X X X 14 7-169 X 0 0 X X 170-19) X X 0 0 X 192-"!4 X X X 0 0 3

Zl5-236 0 X X X 0 237-259 0 X X X 0 2"0- 81 0 X X X 0 262-30-' X X X 0 303-326 0 X X X 0 327-3(8 0 X X X 0 X Under all conditions 0 1f vind speed is less than 9 miles per hour PEP-341 Rev. 1 Page 22 of 22

j P

II

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