ML19208C865
| ML19208C865 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs, Peach Bottom, Salem, Oconee, Kewaunee, Point Beach, Prairie Island, Ginna, Robinson, San Onofre, Big Rock Point, Rancho Seco, Trojan File:Consumers Energy icon.png |
| Issue date: | 07/31/1979 |
| From: | Hulman L Office of Nuclear Reactor Regulation |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7909270587 | |
| Download: ML19208C865 (20) | |
Text
LOCAL 3D1
,.. w,
,c, UNITED STATES NUCLEAR REGULATORY COMMISSION
[ '[h, {/y i
- 4\\
E WASHINGT ON. D. C. 20555 e? -;pr JUL 311979
\\.*...*./
Doc'<et hos. 50-155 50-261 50-206 50-282 50-244 50-306 50-266 50-344 50-301 50-272 50-269 50-317 50-270 50-318 50-278 50-312 50-305 MEMORANDUM FOR: George Knighton, Chief Environmental Evaluation Branch, DSE FROM:
L. G. Hulman, Chief Hydrology-Meteorology Branch, DSE
SUBJECT:
METEOROLOGY EVALUATION FOR THE FUEL HANDLING ACCIDENT INSIDE CONTAINMENT - TAC #6727 In the May 1, 1979 memo from V. Stello to R. DeYoung, you asked that we review We have the atmospheric dispersion factors for 30 operating reactor sites.
enclosed our evaluations for 12 more sites; these add to the seven evaluations we sent you on July 13, 1979.
As we note in our comments on these evaluations, several of these sites have meteorological monitoring programs which do not meet the regulatory position of Regulatory Gi'ide 1.23.
Data from these sites are of questionable value.
In our final memo for this TAC we will recommend a course of action to upgrade these programs.
Please note that for coastal sites we are including X/Q estimates for both overland and overwater sectors. Our overwater estimates reflect a conservative assessment.of the reduced dispersion of air flowing over water. Again note that we have included the exclusion area boundaries we used in our evaluations.
We obtained these values from recent evaluations and from your branch. We ask that you confirm that they are correct.
. Hulman, Chief Hydrology-Meteorology Branch Division of Site Safety and Environmental Analysis
Enclosure:
See attached ID09270g 1043 188
4 J'JL 311979 Ccorge Knight.a Ecclosures:
Evaluations for:
Big Rock Point San Onofre 1 Ginna i
Point Beach 1/2 Oconee 1/2/3 Robinson 2 Prairie Island 1/2 Trojan Calvert Cliffs 1/2 Kewaunee Rancho Seco Salem cc: w/ enclosures D. Muller D. Eisenhut W. Kreger J. Miller W. Gammill R. Vollmer E. Markee J. Donohew L. Hulman Met Section
.'NRC PDR 1043 189
METEM 0t03Y EVALUATION FOR THE FUEL HANDLlhG ACCIDENT INSIDE CONTAINMENT TAC NO. f6727 BY METEOROLOGY SECTION, HMB Plant:
Big Rock Point 1 Docket No.: 50-155 Recomended X/0 Values ac Fedel: Overland:
R. G. 1.3.
Overwater:
R. G. 1.3, aojusted for over (low.
4 Meteorological Data: None available from this site.
Assume F stability, 1 m/s windspeed, No meander.
Time Period Location Distance X/Q (meters)
(sec/ cubic meter)
For overictnd sectors:
0-2 hours Min. EAB 840 6.0 x 10-4 0-8 hours LPZ 4800 6.4 x 10-5 bf bOh
.ix d
4-30 days LPZ 4800 9.5 x 10-7 For overwater sectors:
0-2 hours Min. EAB 840 1.5 x 10-3 0-8 hours LPZ 4800 2.0 x 10-4 8-24 hours LPZ 4800 3.6 x 10-5 6
1-4 days LPZ 4800 9.4 x 10 6 4-30 days LPZ 4800 1.4 x 10-NOTE: EAB = Exclusion Area Boundary LPZ = Low Population Zone Boundary
Reference:
None Assumed Exclusion Boundaries :
Fvo me re.'s a // sectr<s LPZ - All sectors - 4800 meters Coments: Big Rock Point does not have.a Regulatory Guide 1.23 meteorological measurements f,ogram. We have no satisfactory data from them.
These X/Q values are our reasonable estimates,but we cannot con-firm them with oasite measurements.
We recommena that a Regulatory Guide 1.23 program be required at Big Rock Point.
Ob D
WJ.
o a n ga n 7 wjd_ i p,
1043 190
METEOROLOGY EVALUATION FOR THE enEL HANDLING ACCIDENT INSIDE CONTAINMENT TAC NO. *6727 BY METEOROLOGY SECTION, HME Plant: San Onofre Unit 1 Docket No.: 50-206 Recorriended X/0 Values Podel: Land sectors - R.G.1.145, Direction Dependent Overwater sectors: Unit 2/3 C.P. - Hearing - derived model, with modifications for overwater travel Meteorological Data: Overland - 1/73-1/76 Overwater - 2/75-1/76 Time Period Location Distance X/Q (meters)
(sec/ cubic meter)
For overland sectors:
(WNW clockwise through SE.)
0-2 hours NW, EAB 283 9.5 x 10-4 0-8 hours NW, LPZ 2900 2.6 x 10-5 8-24 hours LPZ 2900 1.8 x 10-5 1-4 days LPZ 2900 8.2 x 10-6 4-30 days LPZ 2900 2.7 x 10-6 For overwater sectors (SSE clockwise through W.)
0-2 hours SW, EAB 283 9.2 x 10-4 0-8 hours SW, LPZ 2900 1.0 x 10-4 8-24 hours LPZ 2900 6.5 x 10-5 8.6x10j
{4 dgs ggg 2.9 x 10 N0kh: bB=ExclusionAreaBoundary LPZ = Low Population Zone Boundary Overland-hDavistoZiemannmemo,1/26/7! Unit 1SEPassessment
Reference:
Overwater-hj/ulmantoBunchmemo,1/18/77 H
Markee-Goll testimony, ASLB Unit 2/3 CP Hearing,5/5/76
- - Goll to Ferrell memo, 4/22/76.
Assumed Exclusion Area Boundaries S
283*
W 283*
N 305 E
710 SSW 283*
WNW 283*
NNE 365 ESE it95 SW 283*
NW 283*
NE 435 SE 1005 WSW 283*
NNW 283*
ENE 570 SSE 283*
LPZ - all sectors - 2900 meters.
- overwater sectors 1043 191
4
-2_
Coments:
For overland: We based our evaluation.on our assessment of the onshore tracer test series run at 50t;GS, which we discuss in Reference 1.
For overwater: We based our evaluation on our assessment of the beach tracer test series run at 50t;GS. We describe.this model in Reference 3.
Because this model is.for beach. distances only, we modified it for overwater locations by using diffusion parameters representative of flow over water (rather than for over land.)
Df9D L
l a o Lf[
1043 192 o rc w q
o Jt)
_ J11 Jia
METEOROLOGY EVALUATION FOR THE FUEL
!!ANDLING ACCIDENT INSIDE CONTAIN"ENT TAC NO. f6727 BY METEOROLO3Y SECTION, HMS Plant:
Ginna Docket No.:
50-244 Recomended X/Q Values Model: 5,R.P. 2.'3.4, Direction Independent, but with an adjustment for overwater sectors.
Meteorological Data:
1966, 1967, and 5/73-5/74 Time Period Location Distance X/Q (meters)
(sec/ cubic meter)
For overland sectors:
(E clockwise through WNW.)
0-2 hours Min.
EAB 450 1.2 x 10-3 0-8 hours LPZ 4828 3.5 x 10-5 5
8-24 hours LPZ 4828 2.4 x 10 5 1-4 days LPZ 4828 1.0 x 10-4-30 days LPZ 4828 3.0 x 10-6 For overwater sectors (NW clockwise through ENE.)
o-2 hours Min.
EAB 450 2.4 x 10-3 0-8 hours LPZ 4828 9.6 x 10-5 8-24 hours LPZ 4828 5.8 x 10-5 5
1-4 days LPZ 4828 2.0 x 10 6 4.3 x 10-4-30 days LPZ 4828 NOTE: EAB = Excle:; ion Area Boundary LPZ = Low Population Zone Boundary
Reference:
SEP Review - Ginna, DRAFT, by J. Fairobent 11/8/78
- Davis to Ziemann memo, 5/29/79, Topic III-2.B SEP Review - Ginna Assumed Exclusion Boundaries S
450 W
450 N
450*
E 450 SSW 450 WNW 450 NNE 450*
ESE 450 SW 450 NW 450*
NE 450*
SE 450 WSW 450 NNW 450*
ENE 450*
SSE 450 LPZ - all sectors - 4828 meters
- overwater sectors Comments: As noted in Reference 2, we concluded in our SEP review that the Ginna onsite meteorological. tower may not be properly located to get proper measurements for. inland diffusion estimates. As outlined in Reference.1, the distribution of atmospheric. stability of the most p
recently available data (1975) appeared unraasonable. We concluded g ](p} j ; /'
in our SEP review that.using the direction-independent model with the g t; {
three-year data set gave X/Q values that are reasonably conservative J
IS Ii II !T '
Q FDl' MlJ U= =
1043 193 eJO for the site. Since Ginna is a coastal site, we adjusted the X/Q values for the overwater sectors to reflect the reduced dispersion over water.
If our SEP meteorological monitoring program concerns are satisfied, we 'ay be able to use the R. G. 1 145 model with m
quality data for this site. With reasonable data, we would expect the X/Q values to be somewhat lower than those we now recommend.
1043 194
PETE0 " " m tthTION FOR THE FUEL HANDLING ACCIDENT INSIDE CONTAINMENT TAC NO. ff727 BY METEOROLOGY SECTION, HMS Plant:
Point Beach 1 and 2 Docket No.: 50-266/301 Recorrended X/Q Values Model: S.R.P. 2.3.4, Direction-Independent, with modifications for the overwater sector Meteorological Data:
4/67-4/69 Time Period Location Distance X/Q (meters)
(sec/ cubic meter)
For overland sectors:
(SSE clockwise through NNW.)
0-2 hours Min, EAB 1200 3.4 x 10-4 0-8 hours LPZ 90 '
l.4 x 10-5 8-24 hours LPZ 90uv 1.0 x 10-5 1-4 days LPZ 9000 4.3 x 10-6 4-30 days LPZ 9000 1.3 x 10-6 For overwater sectors (N clockwise through SE.)
0-2 hours Min, EAB 1200 9.5 x 10-4 0-8 hours LPZ 9000 4.9 x 10-5 8-24 hours LPZ 9000 2.9 x 10-5 1-4 days LPZ 9000 9.0 x 10-6 4-30 days LPZ 9000 1.7 x 10-6 NOTE:
EAB = Exclusion Area Bounoary LPZ = Low Population Zone Boundary
Reference:
Reevaluation, 6/27/79 run.
Goll to Hulman me m 7/10/78, Site visit report.
Assumed Exclusion Boundaries S
1200 W
1200 N
1200*
E 1200*
SSW 1200 WNW 1:J0 NNE 1200*
ESE 1200*
SW 1200 NW 1200 NE 1200*
SE 1200*
WSW 1200 NNW 1200 ENE 1200*
SSE 1200 LPZ - all sectors - 9000 meters
- 0verwater sectors.
Comments: As noted in the referenced site visit report, the Point Beach meteoro-logical monitoring program does not meet.the regulatory position of R. G. 1.23 for calibrations and data reduction. Because they do not reduce their data for annual summaries, only the 67-69 data set is available.
1043 195 The onsite program classifies stability by sigma theta measured at 150 feet.
The frequency distribution of stability for the two-year set appears comparable to that recorded for a non-concurrent one-year. peri 6d by the R. G. 1.23 program at the nearby Haven site.
Howev,er, using. sigma theta precludes using the meander function (based on classification of stability by terrperature difference) of R. G. 1.145 (the direction-dependent model.)
1043 196
ETEOF,0LO3Y E"ALUATION F0P. THE FUEL HANDLING ACCIDENT INSIDE CONTAINMENT TAC NO. #6727 BY METEOROLOGY SECTION, HMS 4
Plant: Oconee 1/2/3 Docket No.: 50-269/270/287 Recomended X/0 Values Podel:
R. G.1.145, Direction Dependent Meteorological Data: 4/77-3/78 Time Period Location Distance XfQ (meters)
(sec/ cubic meter) 0-2 hours 5, EAB 1609 2.0 x 10-4 0-8 hours 5, LPZ 9645 2.0 x 10-5 8-24 hours LPZ 9645 1.5 x 10-5 1-4 days LPZ 9645 7.1 x 10-6 4-30 days LPZ 9645 2.5 w 10-6 NOTE:
EAB = Exclusion Area Boundary LPZ = Low Population Zone Boundary
Reference:
Rechaluation,6/28/79run.
Assumed Exclusion Boundaries All sectors - 1609 LPZ - all sectors - 9645 Coments: None.
e 1043 197
METEOROLOGY EVALUATION FOR THE FUEL HANDLING ACCIDEf;T INSIDE C0!;TAINME!;T TAC NO. #6727 BY !!ETEOROLOGY SECTION, HME Plant: Robinson 2 Docket No.:
50-261 Reco nended X/Q Values Model: R. G. 1.145, Dire'ction Dependent Meteorological Data: 1975, 1976, 1977 Time Period Location Distance X/Q (meters)
(sec/ cubic meter) 0-2 hours S + SSE, EAB 425 1.7 x 10-3 0-8 hours N, LPZ 7240 3.6 x 10-5 8-24 hours LPZ 7240 2.3 x 10-5 1-4 days LPZ 7240 9.0 x 10-6 4-30 days LPZ 7240 2.3 x 10-6 NOTE: EAB = Exclusion Area Boundary LPZ = Low Population Zone Boundary
Reference:
Hulman to Knighton memo, 11/7/78, TAC #7169.
- Assumed Exclusion Boundaries S
425 W
635 N
2032 E
762 SSW 425 WNW 1270 Nt4E 1736 ESE 425 SW 508 NW 1567 NE 1397 SE 425 WSW-593 NNW 1863 ENE 1397 SSE 425 LPZ - all sectors - 7240 meters.
Comnents:
See referenced memo - possible data problems.
- Please check these values; EAB may be 425 circular radius.
1043 198 8
m
METECP.0LO3Y EVALUATION FOR THE FUEL HANDLING ACCIDENT INSIDE CONTAINMENT TAC NO. !6727 BY METEOROLOGY SECTION, HMS Plant: Prairie Island 1 and 2 Docket No.: 50-282/306 Recomended X/0 Values Model:
5.R.P. 2.3.4 Direction-Independent Meteorological Data: 6/71-5/72 Time Period Location Distance X/Q (meters)
(sec/ cubic meter) 0-2 hours Min, EAB 715 1.4 x 10-3 0-8 hours LPZ 2410 1.9 x 10-4 8-24 hours LPZ 2410 1.3 x 10-4 1-4 days LFZ 2410 6.6 x 10-5 4-30 days LPZ 2410 2.3 x 10-5 NOTE:
EAB = Exclusion Area Boundary LPZ = Low Population Zone Boundary
Reference:
Prairie Island N.G.P. Units 1 & 2 SER 5/31/73.
Ass g Exclusion Boundaries All sectors - 715 LPZ - all sectors - 2410 meters.
Coimients: For this evaluation, we had the two years of data which Northern States Power Company has sent for our Appendix I analysis..These data sets were for 6/71-5/72 (with a 76% data recovery rate) and for 3/74-3/75 (with a 66% recovery rate.) As noted, the recovery rates for these periods were very poor. Also the distributions of.
atmospheric stability (as defined by vertical temperature gradient) vary considerably between the two data sets and do not compare well with data collected at other sites in the general region.
{ O '
U; d
%)mjT=
1043 199 J Ju lu u i s a As a result of our Appendix I review, we expressed our concerns to tiSP in a conference call on April 20, 1977 (f;RC: Goll, Grotenhuis; NUS: Taylor, Mitchell; N5PC: Ward.)
In this call NSP said that they had installed an upgraded meteorological monitoring system and that data from that system would be available in April 1978.
To this date thd Meteorology Section has not seen data from the updated system.
Due to the poor quality of the available data, we used the direction '
independent model and the 71/72 data set referenced in the Prairie Island SER. Using that set with the direction-independent model should make our X/Q estimates conservative. We expect that using better quality data and the R. G. 1.145 model would reduce our X/Q estimates.
If we receive better quality data, we could refine our calculations.
We also recommend that the status of.the upgraded meteorological program be determined and that we review the new program.
1043 200
HETEOROLOGY EVALUATION FOR THE FUEL HA!iDLIliG ACCIDEhi IriSIDE CONTAINMENT TAC NO. f6727 I
BY HETECROLOGY SECTION, HM3 Plant: Trojan Docket No.:
50-344
,Recomended X/0 Values Model: S.R.P. 2.3.4', Direction-Independent Meteorological Data:
9/71-8/72 Time Period Location Distance X/Q (meters)
(sec/ cubic meter) 0-2 hours Min, EAB 630 6.9 x 10-4 0-8 hours LPZ 4020 4.3 x 10-5 8-24 hours LPZ 4020 2.9 x 10-5 1-4 days LPZ 4020 1.3 x 10-5 4-30 days LPZ 4020 3.8 x 10-6 P
NOTE: EAB = Exclusion Area Boundary LPZ = Low Population Zone Boundary 3
Reference:
Denton to DeYoung memo, 3/29/74, Meteorology SER input.
Assumed Exclusion Boundaries D
D
~ ~ " '
All sectors - 630.
], 'S. ] $ J b'll bN _a l@ ))l /9 LPZ - all sectors - 4020 1
o Coments: Since writing our SER in 1974,.we have received three additional years of data from the Trojan site - 9/72-8/74 and 1976. The 1976 data set was from an upgraded meteorological monitoring program.
Data collected after 1972 hace relatively few occurrences of Stability Classes F;(as classified by temperature difference.)
(These stabilities have the poorest atmospheric dispersion for ground-level releases.) For the 9/71-8/72 data set, Stabilities F&G occurred about 20% of the time; during 1976, these occurrences were down to only 6%.
During our Appendix I review, we questioned Portland General Electric Company about the differences in stability occurrence ; they reviewed their calibrations and instrumentation and fcund no 'ng wrong.
1043 201
2-Due to the uncertainties in the data, we recommead that you still use the 1974 SER X/Q values. These should be conservative. We also recommend that the Trojaa plant meteorological quality assurance program be reviewed.
We have combined the data from 9/71 through 8/74, and this produces a stability di'stribution more reasonable than the recent data indicate. Using these data in our R.G. 1.145 model resulted in 0-2 hour X/Q values which are 1.5 times lower than our recommended 1974 SER values.
If in the SEP review we confirm that the current tover measurements are satisfactory, we could use the recent data witn the R. G. 1.145 model.
1043 202
METEOROLOGY EVALUATION FOR THE FUEL HANDLING ACCIDENT INSIDE CONTAINMENT TAC NO. !6727 BY HETEOROLOGY SECTION, HMS 4
Plant: Calvert Cliffs Docket No.: 50-317/318 Recomended X/0 Values Model: R.G. 1.145, Direction-Dependent, with adjustment for overwater sectors.
Meteorological Data: 1975 Time Period Location Distance X/Q (meters)
(sec/ cubic meter)
For overland sectors:
(SE clockwise through NNW.)
0-2 hours 5, EAB 1150 3.3 x 10-4 08-hours S, LPZ 3218 6.0 x 10-5 5
8-24 hours LPZ 3218 4.2 x 10 5 1-4 days LPZ 3218 1.9 x 10-4-30 days LPZ 3218 6.0 x 10-6 For overwater sectors:
(N clockwisc through ESE.)
0-2 hours LPZ 1150 6.0 x 10-4 0-8 hours LPZ 3218 1.5 x 10-4 5
8-24 hours LPZ 3218 9.8 x 10 5 1-4 days LPZ 3218 3.6 x 10-4-30 days LPZ 3218 8.8 x 10-6 NOTE: EAB = Exclusion Area Boundary LPZ = Low Population Zone Boundary
Reference:
Reevaluation. Goll to Hulman memo, 7/29/76, Site visit report.
Assumed Exclusion Boundaries S
1150 W
1150 N
1150*
E 1150*
SSW 1150 WNW 1150 NME 1150*
ESE 1150*
SW 1150 NW 1150 NE 1150*
SE 1150 WSW 1150 NNW 1150 ENE 1150*
.all sectors - 3218 meters
- 0verwater sectors Coments: See the referenced site, visit report for comments on the meteoro-logical program.
It should be upgraded to R. G. 1.23. Only 1975 data are available. They look reasonable.
1043 203
FTf 040 LOGY EVALUATION FOR THE FUEL Ha uLitiG ACCIDENT INSIDE CONTAINMENT TAC NO. #6727 BY METEOROLOGY SECTION, HP3 Plant:
Kewaunee Docket No.:
50-305 Recomended X/0 Values Model:5.R.P. 2.3.4 Direction-Independent, with modifications for the overwater sectors Meteoro1or al Data: 1969 Time Period Location Distance X/Q (meters).
(sec/ cubic meter)
For overland sectors:
(SSW clockwise through NfiE.)
0-2 hours Min, EAB 1200 4.6 x 10-4 0-8 hours LPZ 4800 3.5 x 10-0 8-24 hours LPZ 4800 2.3 x 10-5 1-4 days LPZ 4800 7.9 x 10-6 4-30 days LPZ 4800 2.4 x 10-6 For overwater sectors (NE clockwise through S.)
0-2 hours Min, EAB 1200 9.2 x 10-4 0-8 hours LPZ 4800 7.8 x 10-5 8-24 hours LPZ 4800 4.8 x 10-5 5
1-4 days' LPZ 4800 1.6 x 10 6 4-30 days LPZ 4800 3.2 x 10-NOTE: EAB = Exclusion Area Boundary LPZ = Low Population Zone Boundary
Reference:
Reevaluation, 6/22/79 run. NUS-808,1969 data,1/72.
Goll to Hulman memo, 7/10/'/8, Site visit report.
Assumed Exclusion Boundaries S
1200*
W 1200 N
1200 E
1200*
SSW 1200 WNW 1200 NNE
' '00 ESE 1200*
SW 1200 NW 1200 NE 1200*
SE 1200*
WSW 1200 NNW 1200 ENE 1200*
SSE 1200*
LPZ - all sectors - 4800 meters
- 0verwater sectors Comments: As noted in the referenced site visit report, the Kewaunee meteoro-logical monitoring program does not meet the regulatory position of R. G. 1.23 for calibrations and data reduction. Because they do not reduce their data for annual sumaries, only the 1969 data are available. We recommend.that the Kewaunee meteorological program be upgraded to meet the regulatory positions of R. G. 1.23.
1043 204
. The 1969 data had stability classified by sigma theta measured at 180 feet.
(The current program does measure vertical temper-ature difference to classify stability.) Using sigma theta precludes using the meander function (based on classification of stability by temperature difference) of R. G. 1.145 (the direction-dependent model.)
The Kewaunee 1969 data had more stable conditions than the non-R. G.1.23 data we reviewed for the nearby Point Beach site.
When used with the direction-independent model, the 1969 data should produce conservative X/Q estimates for this site.
1043 205
METEOROLOGY EVALUATION FOR THE FUEL HANDLING ACCIDENT INSIDE CONTAINMENT TAC NO. #6727 BY METEOROLOGY SECTION, HM5 Plant: Rancho Seco Docket No.: 50-312 Recoamended X/Q Values Model:
R. G. 1."145, Direction-Dependent Meteorological Data: 2/75-1/76 Time Period Location Distance X/Q (meters)
(sec/ cubic meter) 1-2 hours WSW, EAB 640 3.6 x 10-4 0-8 hours WSW, LPZ 8000 1.3 x 10-5 8-24 hours LPZ 8000 8.8 x 10-6 1-4 days LPZ 8000 3.6 x 10-6 4-30 days LPZ 8000 9.8 x 10-7 NOTE: EAB = Exclusion Area Boundary LPZ = Low Population Zone Boundary
Reference:
Re-evaluation, 7/17/79 run.
Assumed Exclusion Boundaries All sectors - 640 LPZ - all sectors - 8000 meters.
Coments: None.
bp7n 5
es.
O
' ~g 7 r
o o
JU E i
1043 206
METEOROLOGY EVALUATION FOR THE FUEL HNiDLitiG ACCIDE!;T ltiSIDE C0!iTAltiMEtiT TAC NO. f6727 BY HETEOROLOGY SECTION, HMS Plant: Salem 1 ano 2 Docket No.: 50-272 /311 Recomended X/0 Values Model:
R. G. l.4 Meteorological Data:
6/69-5/71 Time Period Location Distance X/Q (meters)
(sec/ cubic meter) 0-2 hours Min, EAB 1165 2.4 x 10-4 5
0-8 hours LPZ 8045 2.2 x 10 6 8-24 hours LPZ 8045 3.9 x 10 6 1-4 days LPZ 8045 1.4 x 10-4-30 days LPZ 8045 2.8 x 10-7 NOTE:
EAB = Exclusion Area Boundary LPZ = Low Population Zone Boundary
Reference:
Salem 1 and 2 SER Assumed Circular Exclusion Area Boundary and LPZ (meters)
All sectors - 1165 LPZ - all sectors - 8045 Coments:
Use of R. G.1.4 method yiel'ds conservative X/Q halues. Use of R. G. 1.145 would be expected to yield lower X/Q values; however' consideration of of" shore directions (clockwise from South to West) was probably not used in the SER short term accident evaluation, as was the. practice for coastal sites,and may have resulted in lower X/Q values.
D T 'a!W Je Ju O W ~~0 4 1043 207 o ut J a ddle