ML20041G022
| ML20041G022 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 03/02/1981 |
| From: | Ohanlon J ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20041G016 | List: |
| References | |
| 1904.04, NUDOCS 8203190054 | |
| Download: ML20041G022 (26) | |
Text
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PLANT MANUAL SECTION PROCEDUREN/ORK PLAN TITLE: NO: MAGNITUDE OF RELEASF. PROCEDURE MAGNITUDF OF PETFASE 1904.04
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( ') ARKANSAS NUCLEAR ONE aevision o oare 01/19/82 CHANGE DATE 1.0 PURPOSE The purpose of this procedure is to provide an initial estimate of the radiological conditions at the ANO Exclusion Area Boundary, provide infor-mation to determine the Emergency Action Level, define the offsite area (s) potentially affected by an airborne. radiological release, provide an esti-mate of the whole body and child thyroid dose rates and refine projections based on available field monitoring data. 2.0 SCOPE 2.1 This procedure is applicable to airborne radioactive releases from ANO, Unit One as indicated by the Eberline SPING-4 monitors via the Eberline control terminal. THIS PROCEDURE PROVIDES A METHOD THAT IS SECONDARY TO AND PROVIDES BACKUP FOR THAT METHOD OF 1904.01, REV. O. 2.2 This procedure does not take into account effects caused by precipi-tation.
3.0 REFERENCES
, . 3.1 References Used in Procedure Preparation: [) N' 3.1.1 Arkansas Nuclear One Emergency Plan 3.1.2 "Maaual for Protective Actions, Appendix D", Environmental Protection Agency 3.1.3 " Workbook of Atmospheric Dispersion Estimates", U.S. Depart-ment of Health, Education and Welfare
-3.1.4 Memorandum Number CL-1460 (By A. L. Smith),
3.1.5 Memorandum Number *CL-1571 (By A. L. Smith) - t
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g .w. g . .ygg 3;. . . ...SYTY Y)*4 ^ " ^ 3.1.7 Eberline Technical Manual - CT2 3.1.8 Eberline Technical Manual - CRTl 3.2 References Used in Conjunction with this Procedure 3.2.1 1903.10, " Emergency Action Level Response" 3.2.2 1903.43, " Duties of the Emergency Radiation Team" (% 3.3 Related ANO References
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3.3.1 1904.01, " Magnitude of Release - Computer Method" (
N d $ hl N N NiLiA g OCEDURWORWN RE: NO: PROCEDURE MAGNITUDE OF RELEASE - GERMS 1904.04 PAGE Z U1 43 O%/ ARKANSAS NUCLEAR ONE aevisiON CHANGE o oArE DATE 1/tv/6z 3.3.2 1904.02, " Magnitude of Release - Unit 1" 3.3.3 1904.03, " Auxiliary Building Ventilation Exhaust Emergency Radiation Monitor" 4.0 DEFINITIONS 4.1 00 (sigma theta) - The standard deviation of the net change of the horizontal wind direction. 4.2 at (delta t) - The vertical temperature differential bef. ween the upper and lower temperature sensors on the meterological tower (in degrees centigrade). 4.3 X/_Q - The ratio of the concentration of radioactive material (at a specific location) and the release rate (at. the origin) in units of pCi/cc/Ci/sec. 5.0 RESPONSIBILITIES l 5.1 The Shift Operations Supervisor is responsible for determining if an unplanned gaseous release to the environment is indicated by symptoms g such as high stack monitor readings, area radiation monitor alarms or v i other indications.
'u.J 5.2 The Duty Emergency Coordinator, or his designee, is responsible for performing the magnitude of release calculations.
5.3 The De y Emergency Coordinator is responsible for notifying appro-priate groups per 1903.10, " Emergency Action Level Response". 5.4 The Offsite R'adiological Monitoring Section of the Emergency Radia-
' tion Team is responsible for determining offsite radiological hazards per 1903.43, " Duties of theJ mergency , Radiation Team". , ,
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/' 6.4 The diffusion overlays used in this procedure represent long-term
()N average conditions for ground level releases. 1 l
PLANT M ANUAL SECTION: PROCEDURUWORK PLAN TITLE: NO: MAGNITUDE OF RELEA 3E PROCEDURE MAGNITUDE OF RELEASE - GERMS 1904.04 O'w/ ARKANSAS NUCLEAR ONE PAGE aevisiON CHANGE 3 of 25 O DATE DATE 1/19/82 7.0 DETERMINATION OF EXISTING METER 0 LOGICAL CONDITIONS AND THE GASEOUS RELEASE RATE 7.1 Record the current date and time in Lines 1 and 2 respectively of Form 1904.04A. If onsite meterological data is unavailable, enter "00S" (Out of Service) in the appropriate space. 7.2 Record the 00 from recorder AAR 9300 on Form 1904.04A, Line 3. If 00 is not available, record the At from recorder AAR 9300 and note appro-priately. 7.3 Record the prevailing wind direction (40' elev., if available) from recorder WDR 9300 on Form 1904.04A, Line 4. 7.4 Record the wind speed (40' elev., if available) from recorder WSR 9300 on Form 1904.04A, Line 5. 7.5 Record the radioactive release data as indicated on the Eberline CT2 for each of the following release points that are in service on Form 1904.04A: 7.5.1 At the Eberline Control Terminal (CT), insert the key into (~'$ the " keyboard" switch and activate the control terminal.
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7.5.2 Set the History Format select knob to " Release Rate." l 7.5.3 For each of the channels to be interrogated, depress the l [ Hist. Min] pushbutton then enter the 2-digit monitor ID number and then the two digit channel ID. Then depress l the [ ENTER] pushbutton. 1 _ NOTE: A printout of the 23 previous 10-minute averages plus the current value will appear.
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,_ . A. Containment Purge [RX-7820 ) . (Moditor 09 ; Channels +05,4** '~ ~ " -y.m n w. . .. ,. ,. , . ; . . ~ c , 'O T- 6t' DT; ;i rt= Ci-isv&) , Line*-b .U ' * -6 M cM @:~-C& ^ G M ' '
l B. Radwaste Area [RX-9825] (Monitor 06; Channels 05, 07 or 09; in Ci/sec), Line 7. l C. Fuel Handling Area [RX-9830] (Monitor 04; Channels 05, l 07 or 09; in Ci/sec), Line 8. l l D. Penetration Room /H, Purge [RX-9835] (Monitor 03; Chan-nel 05, 07 or 09; In Ci/sec), Line 9. E. PASS Building (covered by 2904.04, " Magnitude of Re-p-. lease - Germs"). t ) x_/ L_
PLANT M ANUAL SECTION: PROCEDURE / WORK PLAN TITLE: NO: MAGNITUDE OF RELEASE PROCFDURE MAGNITUDE OF RFT F ASF 1904.04 PAGE 4 of 25 ARKANSAS NUC' EAR ONE aEvisioN O oATE Oi/i9/82 (m) v CHANGE DATE NOTE: /. printout of the 23 previous 10-minute averages of the channel release rates will appear followed by the current release rate. 7.5.4 Depress the [ PRINT] then the [. FILE] and then the [ ENTER] pushbuttons. NOTE: Record caly the data from the lowest numbered channel which gives valid, on-scale data. 7.5.5 Record the next-to-last value listed onto the proper line of Form 1904.04A. 7.6 Record the radiation levels in the main steam headers and either the number of safeties / atmospheric dumps open or the pounds / hour of steam being exhausted. 7.6.1 "A" Steam Header (RI-2683), Line 10. 7.6.2 Number of safeties / atmospheric dumps open (this is only applicable if the steam generator has primary-to secondary leakage due to tube rupture; by using this method of cal-culation, the length of the release is not considered - it
) is only considered to be a portion of the instantaneous
(/ (- release rate for the time of the calculation); for the ini-tial release, assume 14 safeties open; for follow-up deter-minations, assume 2 safeties open unless verified to be more or less), Line 11. 7.6.3 Lbs/Hr steam exhausted, Line 12. 7.6.4 "B"-Steam Header (RI-2681), Line 13. 7.6.5 Number of safeties / atmospheric dumps open (see note on S tep 7. 6. 2) , Line *1'4. ;_ *
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7.7 If a release is occurring from an unmonitored location, estimate the gaseous release rate and record it on form 1904.04A, Line 16. 7.8 Make the following determinations: 7.8.1 If this is the initial calculation, proceed to Section 8.0 (Data Conversion). O U
l PtANT MANUAL SECTION: PROCEDURE / WORK PLAN TITLE: N O-MAGNITUDE OF REI;EAS" ' PROCEDURE MAGNITUDE OF RELEASE 1904.04 PAGE 5 of 25
' ARKANSAS NUCLEAR ONE acvisiON CHANGE 0 DATE oiri9/82 DATE 7.8.2 Compare the present readings to the values on which the latest projections have been made.
A. If the values have not deviated from the most recently checked column on Form 1904.04A by more than the fol-lowing list, it is not necessary to make new pro-jections. New data should be taken as specified by the Duty Emergency Coordinator or the Dose Assessment Supervisor. Indication Allowable Deviation Wind Direction 120 degrees Wind Speed 120% 09 1 New Atmospheric Stability Category at i New Atmospheric Stability Category Release Rate /mR/hr 120% Flow Rate 120% B. When the data recorded changes more than the allowable deviation and a new projection is made on that data, you may identify the data by marking the parenthetic - box "()" in the top of that column on Form 1904.04A. 8.0 DATA CONVERSION 8.1 Complete Form 1904.04B to determine the atmospheric stability cate-gory and the downwind direction. If site meteorological data is un-available, limited meteorological data may be obtained from the fol-lowing groups, as indicated:. NOTE: You must specify verbally that it is a Pasquil atmospheric 1 stability category that you are requesting. 1 8.1.1 National Weather Se'rvice [7.71-0971,or.V 'Vl ' -
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a.s , m . . .3 a .N sta ].jeC&ed,WiU(SPScit.W{DY ility category)' ,p,ry;tign.]p g sgu g ,3g gsygelic y .} 8.1.2 KARV Radio [968-1184]. (Wind speed and direction) 8.1.3 MSS Dispatcher. (Weather wire information) 8.2 Complete Form 1904.04C to determine the gaseous release rate. l THE MATERIAL CONTAINED WITHIN THE SYMBOLS ( ) IS PROPRIETARY OR PRIVATE INFORMATION.
PLANT M ANUAL SECTION: PROCEDURE / WORK PLAN TITLE: NO: MAGNITUDE OF RELEA sE PROCEDURE MAGNITUDE OF RELEASE - CERMS 1904.04 PAGE 6 of 25
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') ARKANSAS NUCLEAR ONE aevisiON 0 oa1E i/i9/82 CHANGE DATE 9.0 DETERMINATION OF DOSE RATE AND MAXIMUM PERMISSIBLE CONCENTRATION AT THE EXCLUSION AREA BOUNDARY 9.1 Complete Form 1904.04D to calculate the following information:
9.1.1 Whole body dose rate at the Exclusion Area Boundary. 9.1.2 Child thyroid dose rate at the Exclusion Area Boundary. 9.1.3 The ratio of the actual to the maximum permissible concen-
- t. ration of Xe-133.
9.2 If an Emergency Action Level is NOT indicated, return to Section 7.0. New data should be taken as specified by the Duty Emergency Coordina-tor or the Dose Assessment. Supervisor. 9.3 If an Emergency Action Level is declared (initial projection only), identify, as necessary, the meteorological and effluent monitor data on Form 1904.04A which was used in making the projection by checking the parenthetic box "()" at the top of that column. 10.0 PLUME DEFINITION p () NOTE: The attachments contained in this procedure are provided for ILLUSTRATION ONLY. The scaled overlays and maps necessary to do the actual calculations with are located in the following emergency kits:
- a. Contro: Room Kit
- b. Onsite iechnical Support Center Kit
- c. Emergency Control Center Kit 10.1 Select the overlay (Attachments 1-7) which corresponds to the exist-l ing atmospheric stability cakegory (Form 1904.0,4n, Line 1. 2,) . , -
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i;ri'itnJANT ureh'nir.ITIt 'stEJcYimEd[5f %i~Lh * ** O' the origin directly over the ANO site center and align plume center-line with the downwind direction. l 10.3 Complete Form 1904.04E to calculate the plume Boundary, Whole Body l Dose Rate and Child Thyroid Dose Rate at selected downwind distances. l NOTE: The maximum downwind extent of the affected area may also be determined by the extent of the plume boundary. I 10.3.1 Locate the general vicinity of the plume boundary (from l Form 1904.04E Line 2) on the overlay corresponding to the l Atmospheric Stability Category. 1 e 1 \ N ,I
PLANT M ANUAL SECTION: PROCEDURE / WORK PLAN TITLE: NO: MAGNITUDE OF RELEA 3E PROCEDURE MAGNITUDE OF RELEASE - GERMS 1904.04 7 of 25 O (/ ARKANSAS NUCLEAR ONE <hPAGE aEvisioN O DATE i/19/82 l CHANGE DATE A. Any sectors which are contained (or partially con-tained) within the plume boundary line should be designated as an affected area. NOTE: The following steps accounts for the uncertainty in the local wind direction caused by the Mt. Nebo/ Spring Mountain terrain features. B. If the plume centerline lies in sector 10 and the plume boundary extends beyond 6 miles, the affected area should also include sectors 9, 10 and 11 (from subsector G to the projected extent of the plume). C. If the plume centerline lies in sector 11 and the plume boundary extends beyond 6 miles, the affected area should also include sectors 10, 11 and 12 (from subsector G to the projected extent of the plume). 10.3.2 If it is necessary to calculate plume arrival time (in hours) for a specific location, divide the distance (in miles) from the plant to the location by the windspeed (in mph). s, 10.3.3 If it is necessary to calculate the projected integrated ('~ ) dose (mR) for a specific location, multiply the local dose-rate (mR/hr) by the estimated duration of the release (hr). 11.0 NOTIFICATIONS 11.1 Provide radiological release information to appropriate groups per 1903.10, "EL.ergency Action Level Response".
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11.2 The Emergency Radiation Team may be dispatched to obtain field radio-logical data at the discretion of the Duty Emergency Coordinator /
, Recovery Manager. They shall be dispatched upon. declaration of a .
,, . Site or General Emergency. If thesEmefrgency Radiation ' Team _ is dis -uy+ s- - -
.y . .. m . .:,3.>. . /- wpa t<heilV'iefe cto-Settfoni-16 0 : - -c -V 2 ~~- M S c" O'* T-G W -T C" o' 11.3 Return to Section 7.0. New data should be taken as specified by the Duty Emergency Coordinator / Dose Assessment Supervisor. NOTE: The following section may be used during periods that monitor-ing teams have been dispatched, to improve dose projections based upon the comparison of projected and measured whole body dose rates at field locations on the plume centerline. This section is designed to complement rather than replace the ongo-ing dose projections of Sections 7.0 throagh 10.0. O s i
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PLANT MANUAL SECTION: PROCEDUREN/ORK PLAN TITLE: NO: MAGNITUDE OF RELEA iE PROCEDURE MAGNITUDE OF PELEASE - GERMS 1904.04 s PAGE 8 of 25 (N- ') ARKANSAS NUCLEAR ONE aevision CHANGE 0 oATE DATE 1/19/a2 12.0 VERIFICATION OF PROJECTED DOSE RATES BY FIELD MEASUREMENT 12.1 Based on wind direction, the Duty Emergency Coordinator /Of fsite Moni-toring Supervisor should dispatch of fsite radiological monitoring teams to sample the plume at appropriate locations (to be determined at the time of an incident). Preselected survey points in each sector and zone are shown on the area map (Attachment 8). 12.2 The radiation survey at each location should include a direct exposure rate measurement (mR/hr) and an air sample to determine iodine concen-tration (pCi/cc). As the survey teams approach the assigned survey location, continuous radiation measurements should be taken to identi-fy the location of the highest radiation level. As survey results are obtained, the radiological monitoring team should report the results to the Duty Emergency Coordinator /Of fsite Monitoring Supervisor and proceed as directed. NOTE: Real-time determinations should be compared to projected levels for corresponding time periods. 12.3 Determination of Equivalent Release Rates by Field Measurement. r'~ 12.3.1 Record on Form 1904.04F, the Field Location in Column 1, (T ,) the Iodine Concentration in Column 2,the Whole Body Dose Rate in Column 3, the Xu/Q for the location (as deter-mined by interpolation from the appropriate overlay) in Column 4 and the current windspeed in Column 5. 12.3.2 Because the dose rate and concentrations may change rapidly with distance from the plume centerline, estimates of re-lease rates should be based only upon centerline dose rate and concentrations. Select a sampling site corresponding to the highest measured field dose rate by traversing the plume
, at the desired downwind distance. Complete Form J904.04F .to .
,_ _ estimate the iodine and nob [e gas release rates -shich, *undar* - -
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the observed field conditions. 12.3.3 The most current release rates may be used in place of inplant monitor data f or future Dose Rate Projections. The set of release rates providing the greatest agreement be-tween field dose projections and multiple field monitoring results should be used. Alternatively, either set of release rates may be used with an assumed atmospheric stability category which gives projections onsistent with field monitoring results. (m\ LJ
PLANT M ANUAL SECTION: PROCEDLRE/ WORK PLAN TITLE- NO: MAGNITUDE OF RELEA sE PROCEDURE MAGNITUDE OF RELEASE - GERMS 1904.04 PAGE 9 of 25 (V~') ARKANSAS NUCLEAR ONE aEvision CHANGE 0 oarE 1/19/82 DATE 13.0 ATTACIDIENTS AND FORMS 13.1 Form 1904.04A - Existing Conditions Summary 13.2 Form 1904.04B - Meterological Data Work Sheet 13.3 Form 1904.04C - Gaseous Release Rate Work Sheet 13.4 Form 1904.04D - Emergency Action Level Determination 13.5 Form 1904.04E - Of fsite Dose Projections 13.6 Form 1904.04F - Release Rate Deterrination by Field Measurement 13.7 Attachment 1 - Diffusion Overlay (..'mspheric Stability Category A) 13.8 Attachment 2 - Diffusion Overlay (Atmospheric Stability Category B) 13.9 Attachment 3 - Diffusion Overlay (Atmospheric Stability Category C) 13.10 Attachment 4 - Diffusion Overlay (Atmospheric Stability Category D) (N 13.11 Attachment 5 - Dif fusion Overlay (Atmospheric Stability Category E)
's h 13.12 Attachment 6 - Diffusion Overlay (Atmospheric Stability Category F) 13.13 Attachment 7 - Diffusion Overlay (Atmospheric Stability Category G) 13.14 Attachment 8 - Area Map g ,
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PAGE 10 01 23 (U7 ARKANSAS NUCLEAR ONE aEvisioN CHANGE
" DATE 1/iv/cz DATE i
e ARKANSAS POWER & LIGHT COMPANY l Arkansas Nuclear One l m e v r -. r .,e - 1. . ~c . . , ~ w ., l 'o*" No- -, ,, REV. # 0 PC # [ READING () () () () LINE ITEM 1 2 3 4 1 DATE 2 TIME (IUc:M) 3 c0 (degrees) [or ( ) at ('C)] (AAR-9300) 4 WIND DIRECTION (WDR-9300) FROM,
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y g,7A.e.ic.;s. . . . e, 5 WIND SPEED (WSR-9300) MPli [* 15 MIN. AVG J ( 6 CONTAINMENT PURGE [ MONITOR 09; - - - - . ClfANNEL ()05, ()07, ()09) Ci/Sec . 6-- ' ~- 7 RADWASTE AREA [ MONITOR 06; CHANNEL ()05, ()07, ()09) Ci/Sec _ . , 8 FUEL HANDLING AREA [ MONITOR 04; ClfANNEL ()05, ()07, or (109) - CL/Sec ~
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12 LBS/HR STEAM EXHAUSTED 13 "B" STEAM IfEADER, (RI-2681) mR/hr 14 NO. SAFETIES / ATMOSPHERIC DUMPS OPEN 15 LBS/l!GUR STEAM EXIfAUSTED 16 UNMONITORED RELEASE PATH (S), Ci/Sec 17 INITIALS l
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1.0 AT'f0SP.'ERIC STABILITY CATEGORY j 1.1 Record the a0 (AAR 9300). If this is not available, record the at (AAR9300). c9 degrees or at 'C 1.2 Determace from the following table the atmospheric stability categorf corresponding to the value determined in Step 1.1 ( above and record the category below:
.; _. ; . .g Atmospheric sbia,Mi b b % -a i ~'
Stability f Ca te go ry c6 aT i ( A B
>22.5*
17.5* to 22.5*
<-0.87* ce :.4 .
-0.A7' to -0.78* -
C 12.5* to 17.5* -0.78* to -0.69'- D 7.5* to 12.5" -0.69* to -0.23' E 3.8* to 7.5' -0.23' to +0.69* *
. "'E F 2.1* to 3.8* +0.69* to + 1.8* --
G <2.l* >1.8* Atmospheric Stability Category = 2.0 WIND SPEED ._
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, 2.1 Record the Wind Speed (averaged over the previous 15 minutes) from
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the wind speed indicator (WSR 9300). 7; 7 . I @.x
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! Wici Speed = ., mph , , , , N < .
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Nc 15 manutes) from the wind direction indicator (WDR 9300) Prevailing Wind Direction = (From) f- .. degrees L~ DI*'N. .*PS " 3.2 Determite f rom the following table the Downwind Direction corresponding to the Prevailing Wind Direction determined in Step 3.1 above and record the Downwind Direction below: Prevail: g Wind Direction Downwind Direction O' 1 Prevailing Wind Direction Prevailing Wind i 1:0* Direction + 180* 180* < Prevailir:g Wind Prevailing Wind Direction 1 360* Direction - 180* Downwind Direction = degrees Perfcrmed by: / s INITIAL / TIME _ . - ;q.,[., [
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" DATE DATE
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l I l m ARKANSAS POWER & LIGHT COMPANY ! g Arkansas Nuclear One CUEnt's PFEF ACF D ATE Unpyem? l N h0. ,ML ,ir REV. # 0 PC i l . - - . . . l , LINE MONITOR DESIGNATION CHANNEL RELEASE RATE (Ci/Sec) l NO. NO. (CIRCLE) j 1 09 CONT. PRG. 05 07 09 i 2 06 RADWASTE AREA 05 07 09 t l 3 04 FUEL HD. AREA 05 07 09 [ 4 03 PEN RM/H2 35 07 09 ( PURGE 1 t ,N'- 5 "A" STM. HDR.* '
- d J-i*- Apd *' 4' 6 "B" STM . HDR .*
7 UNMONITOR. PAT i ;'--~
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- Ci/Sec = Net mR/hr
- No. Safeties /Atm. Dumps Open
- 0.0152 Ci/sec . . .
mR/hr A r_ Ci/See = Net mR/hr
- Lbs./hr Stean. Exhausted
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r \ PLANT MANUAL SECTION: PROCEDUREN/ORK PLAN TITLE: NO: MAGNITUDE OF RELEA iE PROCEDURE MAGNI _TUI1Es0E RELEASE - GERMS 1904.04 PAGE 13 of 25 O- ARKANSAS NUCLEAR ONE aEvision CHANGE 0 o4TE DATE 1/19/82 f ARKANSAS POWER & LIGHT COMPANY - - Arkansas Nuclear One j TITLE. EMERCENCY ACTION LEVEL DETERMINATION l FORM NO.1904.04D
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Page 1 of 3
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- Column A Column B CALCULATION OF DOSE RATE ANNUAL AVERACE EXISTING
& MPC AT THE EXCLUSION CONDITIONS CONDITIONS AREA BOUNDARY (0.65 MILES)
.L_ i ne Category: N/A Units Category:
1.0 Enter the Total Gaseous Release - Rate (Q ) (From 1904.04C) in E Columns A*& B. Ci/Sec 2.0 Select and Enter the khole Body ,
- dose factor from the following list e..,
eb;CAn$f5?* 8U which corresponds to the existing Atmospheric Stability Category (from 1904.048) in Column B. 0.69 mR/br . Atmospheric ec , - 44-Stability . ; - :s l Category k'B Dose Factor - A 1.01 -
- d. N B 5.14 _:.
C 11.0 , D 23.5 ' E 35.4 . ^2 F 51.0 L -t Jd : 4-s G - 84.4 '
. J([fg. .
3.0 Calculate the Uncorrected khole )?L' N Body Dose Rate at the Exclusion .., N'M Area Boundary (Line 1.0 X . . , ,. , . , , -, . t Line 2.0) and enter the products ,,~, in Column A and B. respectivel . -
.mR / h r .
.gg .p . .
.y. y-<
s< .sc* 1: -W . et . .v..= n .?;.- i-d' T . . .
- t .c=.
.;; '~
4.0 Enter the existing windspeed
.:.i. MWz- ., - .,. . .c.L - :. > Mr.s . L %.mM _s. e ..se.v+ v;W(-. . .
(from 1904.04B) in Column B. XXXXXXXXXXX (mph) . . _ , . . . . ..;. 5.0 Correct the khole Body Dose Rate <- e,J.:r st cSws . . %- for windspeed (Line 3B + Line 4B) and enter results in Column B. ALu. tux.ux mR/hr i i
\
\ .
s
*-e. .mw m e" .* w m w m s..sw -
e.s ,..
.f: .
._. ... . _ Nuwm ex.a waw+ * . . ~;MIC'di9fCi;G.W6 A
~
- - - - ah
- 4* -.-v... a.b',2. wgh,: .. *2%
6"., a_ .. u _
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l PggggEgigg JROCEDURElWORK PLAN TITLE: NO: PROCEDURE MAGNITUDE OF RELEASE - GERMS 1904.04
' ~ '
PAGE 14 01 D
' ARKANSAS NUCLEAR ONE aEvision CHANGE u DAre DATE 2m/"
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p I A ARKANSAS POWER & LIGHT COMPANY ' g
- Arkansas Nuclear One
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Page 2 of 3 Column A Column B ANNUAL AVERAGE EXISTING Conditions Ifnits Conditions _ 6.0 Transfer value from Line 3A te Line 6A. Transfer Line SB to Line 6A. mR/hr(whole body) 7.0 Select and enter the ap-propriate dose factor from the following list based on the current plant conditions in Columns A and B. % ,, ;;3 / G-- s. n& mR/hr ' (thyroid) mR/br(whole body) Plant Condition Iodine Dose Factor
\. Waste Gas Tank Rupture 0.049 Steam Generator Tube Rupture 0.054 (to Condenser) _.
Fuel Handling Accident 1.7 Large-Break LOCA 63 Rod Ejection Accident 814 ~' None of the Above 9.3 8.0 Calculate the projected Child Thyroid Dose Rate at the Exclusion Area " *' Boundary (Line 6 X Line 7) and ., enter the results in Columns A and B,
'respectively. mR/hr(child
9.0 Select .and enter the appropriate , NY# I . - Xc-133 MPC Factor corresponding to 2
,. a m .p . . r j,1. g ,,_.: T+_ p .s -
- the en ts tjpg Aygspheri,g St ability * ., ,e!'. f~ " ' ....y, , .. ". .'b .;,q . ,,9 3 %
f" %Ceh-( frof.T is04.D4B,# t dp l' 7) ' ' 2' * * '*" *'~ ~ ~# ' ' ' ' , . .
~
.~~/.-
in Column B. 19.2 pp mR/g Atmospheric #- M T? N td ^ Stability Xe-133 MPC Category _ Factor A 25 B 27 C 32 D 41 E 46 F 55 G 84 s
. *wi> M m v ' = e..w < m e. ~e .ol-' ~ -
i s' ,
. c . mn . - .w mw , .:., , 5 py A . ~- $ D .'
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. , . ,. a- .. x..:?i.D ='
PLANT MANUAL SECTION: PROCEDUREN10RK PLAN TITLE: NO: MAGNITUDE OF RELEA sE PROCEDURE MAGNITUDE.Or RELEASE - GERMS 1904.04 PAGE P ARKANSAS NUCLEAR ONE aevisioN CHANGE 15 of 25 O oATE DATE 1/19/82
... .. l
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,. , . ARKANSAS POWER & LIGHT COMPANY , _
Arkansas Nuclear One N - . ,m . m .,,.m_. .-,-.er...,...~ lN" .- -.- REV. f o PC #
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Page 3 of 3
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Column A Column B ANNUAL AVERAGE EXISTING Conditions Units Conditions 10.0 Calculate the Xe-133 MPC Ratio at the Excluston Area Boundary (Line 6 X Line 9) and enter results in Columns A and B. MPC NOTE: For EAL declaration, only Unit I results should be used; follow-up calculations may include both units results.
.M .1 11.0 Summarize the results of the calculations . w, aa .;.g. Q in the appropriate column of the following table. If magnitude of release determin-ations have been initiated on Unit 2, enter the results of the determinations for Unit 2 .T (from Focm 2904.04D) in Column 2, the re- ' ' i sults of the determinations for Unit 1 in Column I and sum the results to obtain the combined effects. If Unit 2 is not involved .
in making a release, you may enter "NA" in Columns 1 and 2 and enter the results of the determinations for Unit 1 in Column 3. . ,
. Column 1 Column 2 Column 3 'w Unit One Unit Two . -; L I .
_ Step Item (Form 1904.04D) (Form 2904.04D 11.1i Ltce 6 (Column A)' Total i f Q? li.2i Line 6 (Coluan B) , 3 ll.3j Line 8 ! (Column A) -
'N:--*. r% ii**'JT1L':<n,A, m r.
tbr ,s,n,OM.%n uww a - v s wme. i ., c i . ~ A .14-C fadiz.3 '.
- m ku. ns;;;,=. ways es w
! 11.3 Line 10 i ( C o t umn A )
! I J 11.6 Line 10i (Column B) i
! I
. o .dMd:.i$Ad; s..
12.0 Using the results from 11.0 above, deter- ~ mine the appropriate Emergency Action Level (EAL) based upon the following criteria: FMERCENCY ACTION LEVEL INDICATED EAL n CRITERIA CENERAL EMERGENCY 11.2 (Total) > 5. 0 mR / h r '-Ts o r (CE) 11.4 (Total) > 25.0 mH/hr CT SITEEMERGENCY(SE)]11.1(Total)> 5.0 mR/hr kB or d 11.3 (Total) > 25.0 a.R/hr CT ALERT ( A) !I11.5 (Total) > 10.0 MPC/ HOUR bTSCAL EVENT (UE) " 11.5 (Total) > 1.0 MPC/ HOUR O' Performed by: INITIALS / TI':E Peviewed by:
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PAGE 16 01 D (D ARKANSAS NUCLEAR ONE _aEvision CHANGE u o*TE 1/1'> < a z DATE
~
i l' l , . . . . .. ARKANSAS POWER & LIGHT COMPANY l Arkansas Nuclear One N nrrs ive nner pon_ wen nsc l FORM NO. REV. # 0 PC f CALCULATION OF OFFSITE DOSES AT SELECTED DISTANCES Date
- 1. Record the following inforination:
1.1 X/Q at Exclusion Area Boundary (0.65 miles) from selected overlay 1.2 khole Body Dcese Rate at Exclusion Area Bcundary (from Form 1904.04D, 11.2 TOTAL) l 1.3 Chilil TLyroid Dose Rate at Exclusion Area Boundary (f rom Form 1904.04D, 11.4 TOTAL) l 2. Calculate the X/Q line corresponding to the plume outer boundary
.~
(0.05 mr/hr khole Body): _, q.,u_ g.j:. __ : E_x. l [X/Q EAB (Line 1.1) + khole Body Dose Rate (Line 1.2)] x 0.05 = j (X/Q for 0.05 mR/hr) i v Affected Sector (s) = ._,
- 3. Calculate the Projected khole Body and Child Thyroid Dose Rate at selected ',
downwind distances of 1, 2, 5 and 10 miles. l i (1) (2) (3) (4) Downwind Plume Projected Proj ected ' Distance Centerline khole Body Child Thyroid - (mi) X/Q Dose Rate Dose Rate 1 ,
~
2 . 5 j'
- v.
10 ., t_ i t -
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m'-i- ~: ' - : ~~ * : 1 ' .~"t*-' ' '
- L* *" '" ** WY O U Y'? U" Y~
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O' . ~' l Column 2: Determine X/Q from overlay corresponding with atmospheric stability category. Column 3: Projected khole Body Dose Rate (mR/hr) = Column 2 X "* ' Line 1.1 Column 4: Projected Child Thyroid Dose Rate (mR/hr) = Columa 2 X ""
- Line 1.1 Performed By / l Initials / Time Reviewed By ,
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T PLANT M ANUAL SECTION: PROCEDURElWOR4 PLAN TITLE: NO: MAGNITUDE OF RELEA sE PROCEDURE MAGNITUDE _OF RELEASE - GERMS 1904.04 PAGE 17 of 25 O ARKANSAS NUCLEAR ONE aavisioN o oATE 1/19/e.2 CHANGE DATE f
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u- - ARKANSAS POWER & LIGHT COMPANY Arkansas Nuclear One . TITm crfem our nrwomhTvay av FYefn wrsever- [TORM NO.
. . . . REV. # , PC f , _ , , , , , .
d -1 (1) (2) (3) (4) (5) (6) (7) Field Iodine Conc. khole Body mu/Q Windspeed Noble Gas Iodine Location (pCi/ce) Dose Rate MPli Release Rate Release (mR/hr) (Ci/Sec) Rate (Ci/Secj
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CALCULATIONS: (6) Noble Gas Release Rate (Xe-133 equivalent) = column 3* 5.75E-6/ Column 4 e Column 5 (7) Iodine Release Rate (I-131 equivalcot) = Column 2/ Column 4 ? Column 5 Performed By / Initials / Time Reviewed By N
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N 1.0 4.64 E- 5 , ' ,
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s PLANT M ANUAL SECTION: PROCEDURE / WORK PLAN TITLE: NO: MAGNITUDE OF RELEA TE l PROCEDURE MAGNITUDE OF RELEASE - GERMS 1904.04 ) PAGE (^'
' ARKANSAS NUCLEAR ONE aevision 25 of 23 o o*1E i/19782 i CHANGE DATE ATTACHMENT 8 I
_ . . . . - = 0 M. :<%.s.E.%y + : m .e. _.-.~.,7
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