ML20196A613

Submits Response to Verbal RAI Re Accident Dose Analysis & CR Habitability Analyses for Max Hypothetical,Fuel Handling Accident & Control Element Assembly Ejection Event

ML20196A613
Person / Time
Site:	Calvert Cliffs
Issue date:	11/24/1998
From:	Cruse C BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9811300077
Download: ML20196A613 (14)

Text

-.'

J CumEs H. Causs Baltimore Gas and Electric Company i

Vice President Calvert Cliffs Nuclear Power Plant Nuclear Energy 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410 495-4455 November 24,1998 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:

Document Control Desk

SUBJECT:

Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2; Docket Nos. 50-317 & 50-318 Response to Verbal Request for Additional Information:

Accident Dose Analysis and Control Room Habitability Analyses for the Maximum Hypothetical Accident, Fuel Handling Accident, and Control Element Assembly Ejection Event

REFERENCES:

(a)

Letter from Mr. C. H. Cruse (BGE) to Document Control Desk (NRC) dated April 9,1998, " Response to Request for Additional Information:

Accident Dose Analysis and Control Room Habitability Analyses for the Maximum Hypothetical Accident, Fuel Handling Accident, and Control Element Assembly Ejection Event" (b)

Telephone Call from Mr. A W. Dromerick (NRC) to Mr. E. M. Tyler (BGE) on October 26,1998, same subject (c)

' letter from Mr. A. E. Lundvall, Jr. (BGE) to Mr. R. W. Reid (NRC),

dated November 20,1978," Control Room Dose" Reference (a) provided an analysis of radiation exposure at the site boundary and the plant Control Room following a maximum hypothetical accident, a fuel handling accident, and a control element assembly ejection event. During a subsequent ;c. phone conference (Reference b), Mr. A. W. Dromerick of your staff asked for the following information to supplement that provided in Reference (a):

1. Are high wind measurements in the datafiles on the disk 10 and 60 meters and is wind speed i

measuredin meters /second?

l All' wind measurements are included in the 10 meter and 60 meter 1991,1992, and 1993 j

meteorological data files. Thejoint frequency tables in Attachment (1) are a synopsis of the data on the disks. Some data is missing because of equipment malfunction.

All wind speeds on the disk are in tenth meters per second (e.g., 54 denotes 5.4 m/sec). This O

follows the convention in NUREG/CR-6331, Revision 1, " Atmospheric Relative Concentrations in Building Wakes". In Attachment (1), the wind speeds have been converted to miles / hour and meters /second, as noted on the individual sheets.

ADOCK 05000317[

9811300077 901124 PDR P

PDR1

f Document Control Desk November 24,1998 Page 2

(

2. Is the calculation for Ki/Q taken from the Updated Final Safety Analysis Report based on meteorological datafor wind speedfrom all directions or only on-shore?

The site boundary and low population zone atmospheric dispersion coefficients in Chapter 2 of the Calvert Cliffs Updated Final Safety Analysis Report are based on on-shore and along-shore inversion winds. Additionally, the Control Room doses reported to the NRC by Reference (c) are based on the Halltsky methodology with wind from all directions. The Control Room dose data submitted with Reference (a) uses ARCON96 methodology, also with wind from all directions.

The ' AROCN96 methodology is described in NUREG/CR-6331, Revision 1, " Atmospheric Relative Concentrations in Building Wakes."

3. Are Ki/Q values used in assessment oflimiting doses based on wind directionfrom all directions or on-shore?

l All Control Room heating, ventilation, and air conditioning atmospheric dispersion coefficients for the current submittals are based on wind from all directions.

4. Pleaseprovide scale drawings showing releasepoints andintakes.

l Scale drawings are provided in Attachment (2).

i i

Should you have questions regarding this matter, we will be pleased to discuss them with you.

Very truly yours, for C. H. Cruse Vice President - Nuclear Energy CHC/EMT/ dim l

Attachments: (1) Joint Frequency Tables (2) Scale Drawings i

cc:

R. S. Fleishman, Esquire H. J. Miller, NRC J. E. Silberg, Esquire Resident Inspector, NRC S. S. Bajwa, NRC R. I. McLean, DNR A. W. Dromerick, NRC J. H. Walter, PSC P

1 I

7.

l ATTACHMENT (1) l i

l JOINT FREQUENCY TABLES l

1 l

i Baltimore Gas and Electric Company Calvert Cliffs Nuclear Power Plant November 24,1998 1

JOINT FREQUENCY TABLES OF WIND SPEED AND 8 of 8 WIND DIRECTION 60m VERSUS DELTA TEMPERATURE 60-10m ANNUAL (JANUARY 1,1991 THROUGH DECEMBER 31, 1991)

' ~

PERIOD OF RECORD 91010101-91123124 ALL STABILITY, ALL DT/DZ-UIND SPEED (M/S) AT 60 M LEVEL UIND

.22

.51-.76-1.1-1. 6-2.1 - 3.1 - 5.1 - 7.1 - 10.1 - 13.1 - > 18 TOT.

DIR

.50

.75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 ti 4

1 6

18 32 88 207 135 176 34 2

0 704 NtiE 4

2 8

12 24 87 127 80 77 47 6

0 476 fiE 5

8 13 19 29 55 71 77 49 5

0 0

332 EtlE O

1 10 22 31 63 88 54 10 0

0 0

281 E

3 5

8 18 39 72 89 34 2

0 0

0 271 ESE 3

1 3

8 20 57 81 19 3

0 0

0 195 SE 2

1 5

16 14 65 154 54 10 2

0 0

323 SSE 3

1 7

7 15 52 222 183 59 5

0 0

554 S

1 1

4' 12 20 49 198 317 40 0

0 0

645 SSU 1

0 7

8 16 60 255 420 185 8

0 0

961 SU 5

1 8

21 18 69 329 415 167 4

0 0 1841 USU 0

6 9

21 23 61 218 175 20 6

0 0

541 U

3 1

5 10 18 40 151 83 29 2

0 0

345 UNU 5

0 3

9 19 62 148 168 82 18 0

0 521 NU 2

3 4

19 16 48 221 245 111 5

0 0

678 NNU 5

1 4

16 11 60 203 195 92 5

0 0

597 TOTALS 46 33 104 236 345 988 276c 2654 1118 141 8

0 8465 NUMBER OF CALMS 30 NUMBER OF INVALID HOURS 295 NUMBER OF UALID HOURS 8465 TOTAL HOURS FOR THE PERIOD 8760

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fP SITE: CALVERT CLIFFS 02/21/92 14:46 HOURS AT EACH UIND SPEED AND DIRECTION PERIOD OF RECORD =

91010101-91123124 STABILITY CLASS:

ALL-DT/DZ ELEVATION:

SPEED:US10M DIRECTI0ti:UD10M LAPSE:DT60M-UIND SPEED (MPH)

WIND-DIRECTION 1-3 4 -?

8-12 13-18 19-24

>24 TOTAL N

76

'227 267 89 0

6 e60 NNE 68 274 208 52 1

0 603 1

NE 62 150 138 49 0

0 399 ENE 70 157 80 4

0 0

311 E

74 142 29 1

0 0

246

.L ESE 64 109 13 0

0 0

186 SE 65 119 51 4

0 0

239 SSE 83 186 172 26 1

0 468 S

129 288 123 10 0

0 550 SSU 179 403 291 31 1

0 907 SU 185 594 527 92 0

0 1399 USU 137 291 181 10 3

0 623.

U 119 188 61 20 1

0 390 UNU 113 165 119 38 2

0 437 NU 104 251 198 57 4

0 614

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NNU 76 211 173 19 0

0 480 TOTAL 1604 3755 2631 502 13 0

8512 PERIODS OF CALM (HOURS):

40 UARIABLE DIRECTION 2700 HOURS OF MISSING DATA:

248

. m.

m

-_...._____________._.__._.__.______._.-____..________..._._._m____.__..__._._._____m.___.___.___________,_______m_.__________._____.________

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.y JOINT FREQUENCY TABLES OF WIND SPEED AND

~ 8 of 8 WIND DIRECTION 60m VERSUS DELTA TEMPERATURE 60-10m ANNUAL (JANUARY 1,1993 THROUGH DECEMBER 31, 1993)

PERIOD OF RECORD 93010101-93123124 ALL STABILITY, ALL DT/DZ-WIND SPEED (M/S) AT 60 M LEVEL WIND

. 22

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. 76-1.1 - 1. 6-2.1 - 3.1 - 5.1 - 7.1 - 10.1 - 13.1 - >18 TOT.

DIR

.50

.75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N

3 5

7 18 25 118 248 182 127 44 2

0 779 NNE O

3 4

17 36 144. 251 133 121 39

~2 0

751 NE 1

4 6

9 39 98 153 92 79 28 7

0 516 EtlE O

O 5

24 38 84 117 34 20 6

4 0

333 E

2 4

9 21 56 122 96 23 1

1 1

0 336 ESE 6

1 10 18 29 76 112 21 11 0

0 0

284 SE 1

4 7

20 17 58 184 70 18 6

0 0

385 SSE O

1 5

9 12 68 283 203 62 12 1

0 657 S

2 2'

5 8

19 49 160 279 53 0

0 0

577 SSU 1

2 5

9 12 50 196 306 143 8

0 0

732 SW 1

1 6

12 14 60 264 293 153 9

1 0

814 USU 1

2 5

9 12 48 248 150 32 0

0 0

508 U

0 3

3 14 22 49 139 84 28 3

0 0

345 UNU 0

2 4

7 14 36 144 144 71 18 0

0 441 NU 2

3 4

6 11 34 187 223 131 26 1

0 628 NNU 2

2 3

9 15 38 235 175 69 8

1 0

557 TOTALS 22 39 88 210 371 1132 3017 2412 1119 208 20 0 8643 NUMBER OF CALMS S

NUMBER OF INVALID HOURS 117 NUMBER OF VALID HOURS 8643 TOTAL HOURS FOR THE PERIOD 8760

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JOINT FREQUENCY TABLES OF WIND SPEED AND 8 of 8 WIND DIRECTION 60m VERSUS DELTA TEMPERATURE 60-10m ANNUAI, (JANUARY 1,1992 TIIROUGli DECEMBER 31, 1992)

PERIOD OF RECORD 92010101-9212'3124 ALL STABILITY, ALL DT/DZ WIND SPEED (M/S) AT 60 M LEVEL r

UIND

.22

.51

.76-1.1-1.6-2.1-3.1-5.1-7.1-10.1-13.1- >18 TOT.

DIR

.50

.75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N

4 4

5 27 34 123 314 226 118 38 9

3 906 NNE O

2 8

19 37 138 222 136 93 37 5

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ilE 3

3 7

17 33 83 132 104 44 42 3

0 472 ENE 1

4 6

17 29 79 143 58

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0 1

362 E

5 5

4 23 44 107 152 38 3

1 0

0 382 ESE 2

0 7

16 17 59 128 42 8

4 0

0 283 SE O

O 2

12 19 41 151 44 25 1

0 0

296 I

SSE 1

0 5

9 1G 61 232 172 77 6

0 0

580 S

0 1'

5 5

13 40 19G 239 53 5

0 0

557

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SSU 1

1 1

8 18 59 212 286 103 2

1 0

692 SU 1

1 3

12 16 85 224 276 163 4

1 0

786 i

USU 1

2 2

10 13 54 188 141 57 4

1 0

475

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3 7

11 14 47 156 92 16 2

0 0

350 i

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3 3

5 16 38 174 173 84 25 2

0 527 i

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1 5

20 14 41 238 207 92 18 0

0 636 l'

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1 6

5 22 52 256 264 65 4

1 0

679 TOTALS 24 31 76 216 355 1107 3118 2498 1022 195 23 4 8680 NUMBER OF CALMS 13 NUMBER OF IllVALID HOURS 104 NUMBER OF UALID HOURS 8680 TOTAL HOURS FOR THE PERIOD 8784 t

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TABLE A-2 (continued) 8 of 8 HOURS AT EACH LJIriD SPEED AND DIRECTION PERIOD OF RECORD,

93010101-93123124 STABILITY CLASS:

ALL DT/DZ

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ELEVATI0ti:

SPEED:ldS10M DIRECTION:UD10M LAPSE:DT60M-UIND SPEED (MPH)

WIND DIRECTION 1-3 4-7 8-12 13-18 19-24

>24 TOTAL N

57 258 249 79 6

0 649 ilNE 79 400 191 40 1

0 711 ilE 64 270 197 80 5

1 617 EllE 68 223 70 23 6

0 390 E

93 180 19 1

1 0

295 ESE 79 117 14 4

0 0

215 SE 88 134 70 8

0 0

301 SSE 93 221 175 39 2

0 532 S

127 246 153 16 1

0 543 SSid 183 325 235 G3 0

0 807 SlJ 182 469 347 79 2

0 1081 LJSid 167 291 132 17 1

0 608 tJ 139 171 54 15 0

0 379 LJNU 150 137 116 41 8

0 453 tilJ 108 230 193 83 8

0 625 til1U 73 206 135 39 0

0 453 TOTAL 1750 3878 2350 627 41 1

8659 PERIODS OF CALM (HOURS):

55 UARIABLE DIRECTI0ti 2910 HOURS OF MISSING DATA:

101 O

4 ATTACHMENT (2)

SCALE DRAWINGS i

1 Baltimore Gas and Electric Company Calvert Cliffs Nuclear Power Plant November 24,1998

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- Note: kokoge from Containment Bad 9. represented by 91 release points on the sides and roof of each building.

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A Note: Generalized drawing. For detait, see Calvert Cliffs

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Figure 2 5. CCNpp Protected area layout.

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