Text

Response to NRC Second Request for Additional Information Regarding the Proposed Technical Specification Changes to Allow Use of Shield Building Dome Penetrations During Modes 1 Through 4
	ML12074A036
Person / Time
Site:	Sequoyah
Issue date:	02/29/2012
From:	James Shea; Tennessee Valley Authority
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	TAC ME7026
	Download: ML12074A036 (24)
	v • d • e

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 February 29, 2012 10 CFR 50.4 10 CFR 50.90 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Sequoyah Nuclear Plant, Unit 2 Facility Operating License No. DPR-79 Docket No. 50-328

Subject:

Response to NRC Second Request for Additional Information Regarding the Proposed Technical Specification Changes to Allow Use of Shield Building Dome Penetrations During Modes I Through 4 (TAC NO.

ME7026)

Reference:

1. Letter from TVA to NRC, "Application for Temporary Change to Technical Specifications to Allow Use of Penetrations in Shield Building Dome During Modes 1 through 4; and Request for Specific Usage of Alternate Source Term Methodology for Calculating Radiation Doses Associated with the Proposed Temporary Change to Technical Specifications (TS-SQN-2011-03)," dated August 31, 2011

2. Letter from TVA to NRC, "Request for Expedited Review of a Licensing Amendment Request Supporting the Sequoyah Nuclear Plant, Unit 2, Steam Generator Replacement Project," dated November 28, 2011

3. Letter from NRC to TVA, "Sequoyah Nuclear Plant, Unit 2 - Request for Additional Information Regarding the Propopsed [sic] Technical Specification Changes to Allow Use of Shield Building Dome Penetrations During Modes 1 Through 4 (TAC NO. ME7026)," dated December 29, 2011

4. Letter from TVA to NRC, "Response to NRC Request for Additional Information Regarding the Proposed Technical Specification Changes to Allow Use of Shield Building Dome Penetrations During Modes 1 Through 4 (TAC NO. ME7026)," dated January 27, 2012 Peinted on recycled paper

U.S. Nuclear Regulatory Commission Page 2 February 29, 2012

5. Letter from NRC to TVA, "Sequoyah Nuclear Plant, Unit 2 - Request for Additional Information Regarding The Proposed Technical Specification Changes to Allow Use of Shield Building Dome Penetrations During Modes 1 Through 4 (TAC NO. ME7026)," dated January 30, 2012 By letter dated August 31, 2011 (Reference 1), the Tennessee Valley Authority (TVA) submitted a request for amendment to the Technical Specifications (TSs) for Sequoyah Nuclear Plant (SQN), Unit 2. The amendment request proposed to allow SQN, Unit 2, to open one of the penetration hatches in the Shield Building dome for up to five hours per day, six days per calendar week while in Modes 1 through 4 during Unit 2 Cycle 18 from receipt of Nuclear Regulatory Commission (NRC) approval for the request until entering Mode 5 at the start of Unit 2 refueling outage 18 (U2R18). The U2R18 refueling outage is scheduled to commence in the fall of 2012. In a letter dated November 28, 2011 (Reference 2), TVA requested that the NRC expedite their review of the Reference 1 amendment request for approval by May 1, 2012 to support work in advance of the U2R1 8 refueling outage to facilitate the Steam Generator Replacement Project.

By letter dated December 29, 2011 (Reference 3), the NRC forwarded a request for additional information (RAI) regarding the proposed changes to the TSs. TVA responded to this first RAI by letter dated January 27, 2012 (Reference 4). Subsequently, in a letter dated January 30, 2012 (Reference 5), the NRC forwarded a second RAI regarding the proposed changes to the TSs and noted that it had previously been agreed that a response would be provided within 30 days from the date of the letter. The Enclosure to this letter provides the TVA response to the NRC's second RAI. No changes have been made to the enclosure and attachments of the Reference 1 request for amendment to the TSs or to the first RAI response of Reference 4.

There are no regulatory commitments included in this submittal. If you have any questions, please contact Clyde Mackaman at (423) 751-2834.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the Z

day of February 2012.

Respe u

W.w an er, Corporate Nuclear Licensing Ennclosure:,See, ppage 3 cc: See page 3

U.S. Nuclear Regulatory Commission Page 3 February 29, 2012

Enclosure:

Response to NRC Second Request for Additional Information Regarding the Proposed Technical Specification Changes to Allow Use of Shield Building Dome Penetrations During Modes 1 Through 4 cc (Enclosure w/o Attachment 4):

NRC Regional Administrator - Region II NRC Senior Resident Inspector - Sequoyah Nuclear Plant Director, Division of Radiological Health, Tennessee State Department of Environment and Conservation

ENCLOSURE TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT UNIT 2 RESPONSE TO NRC SECOND REQUEST FOR ADDITIONAL INFORMATION REGARDING THE PROPOSED TECHNICAL SPECIFICATION CHANGES TO ALLOW USE OF SHIELD BUILDING DOME PENETRATIONS DURING MODES 1 THROUGH 4 NRC Question By letter dated August 31, 2011 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML11249A061), and supplemented by letter dated November 28, 2011 (ADAMS Accession No. ML11334A054), the Tennessee Valley Authority (the licensee), submitted a license amendment request (LAR) to revise the Sequoyah Nuclear Plant (SQN), Unit 2, Technical Specifications (TSs) to allow the use of one of the penetration hatches in the shield building dome for up to 5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months per day, 6 days per calendar week while in Modes 1 through 4 during SQN, Unit 2, Cycle 18 (U2R18) between receipt of Nuclear Regulatory Commission (NRC) approval for this proposed request, and until entering Mode 5 at the start of the SQN, Unit 2 fall 2012 refueling outage (U2R 18). In order to complete its review of the above documents, the NRC staff needs the following additional information:

When discussing the control room dose analyses on page A6-2 in Attachment 6 of the licensee's letter dated August 31, 2011, the licensee stated:

"Preliminary ARCON96 runs indicated that the worst case X/Q values for releases from the open penetration will be greater than the vent X/Q, however these values are within a factor of 2 of the design basis vent X/Q values."

Please provide the worst case X/Q values for releases from the open penetration. Also, provide a copy of the meteorological data inputs and program outputs for the atmospheric dispersion computer codes (e.g., ARCON96) used to generate the worst case X/Q values. Any assumptions and inputs associated with the use of the computer codes that are not included in the current application, Updated Final Safety Analysis Report, or other docketed information should also be provided.

Please provide a site plan highlighting the locations of all potential accident release pathways and control room intake and unfiltered inleakage pathways. Drawings should be to scale and show true north. If the diagram included on page A6-5 satisfies these criteria, please provide a more legible version.

E-1

TVA Response Please provide the worst case X/Q values for releases from the open penetration.

The X/Q selected to be used for the exhaust from the open hole in containment and the intake at the normal/emergency air intakes were chosen to be the same as the design basis Shield Building vent X/Q as defined in the "SQN Control Room X/Q" calculation.

As noted in Calculation SQNSQS2-0245, "Offsite and Control Room Doses Following a LOCA with a Temporary Hole in the Shield Building Using Regulatory Guide 1.183 Assumptions," the hole must be closed in less than an hour. Therefore, all releases after closure of the hole will be through the Shield Building Vent. The X/Q values for these releases are:

ARCON96 X/Q values [sec/m 3]

Time Hole to Normal Hole to X/Q Value Used step Intake Emergency (SQN Control Room X/Q Intake Calculation) 0-2 hr 5.16E-4 5.24E-4 5.63E-4 2-8 hr 3.35E-4 2.21 E-4 3.78E-4 8-24 hr 1.52E-4 1.03E-4 1.12E-4 1-4 day 1.15E-4 8.78E-5 9.38E-5 4-30 day 8.84E-5 6.67E-5 6.96E-5 The preliminary ARCON96 X/Q values used for the exhaust from the open hole in containment and the intake at the normal/emergency control room air intakes were not included in the analyses. They are replicated as provided in Attachment 1 to this Enclosure.

Also, provide a copy of the meteorological data inputs and program outputs for the atmospheric dispersion computer codes (e.g., ARCON96) used to generate the worst case XIQ values.

A copy of the meteorological data inputs for the atmospheric dispersion computer codes (e.g., ARCON96) used to generate the worst case X/Q values is provided in the disc in to this Enclosure. The filename is "metsqnp_18yr.dat."

A copy of the atmospheric dispersion computer code program outputs for the normal control room air intake is provided in Attachment 2A to this Enclosure. A copy of the atmospheric dispersion computer code program outputs for the emergency control room air intake is provided in Attachment 2B to this Enclosure.

Any assumptions and inputs associated with the use of the computer codes that are not included in the current application, Updated Final Safety Analysis Report, or other docketed information should also be provided.

The assumptions and inputs used are the same as those used in the design basis SQN Control Room X/Q calculation, which is the source document for the values given in the Updated Final Safety Analysis Report (UFSAR).

E-2

Please provide a site plan highlighting the locations of all potential accident release pathways and control room intake and unfiltered inleakage pathways. Drawings should be to scale and show true north. If the diagram included on page A6-5 satisfies these criteria, please provide a more legible version.

The diagram included on page A6-5 of the August 31, 2011 letter (Reference 1 of the cover letter) satisfies the criteria for locations of all potential accident release pathways and control room intake but is not to scale. This diagram was developed from SQN Drawing No. 1, 2-47W200-1, "Equipment Plans - Roof," and includes building dimensions. The diagram is used in the design basis SQN Control Room X/Q calculation.

As described in the UFSAR, the equivalent of 51 cubic feet per minute of unfiltered outside air enters through the main control room doors as a result of personnel entering or leaving and through leakage from ducts and dampers.

A full size legible version of the diagram on page A6-5 of the August 31, 2011 letter (Reference 1 of the cover letter) is provided in Attachment 3 to this Enclosure and a "pdf' file type copy is included in the disc provided in Attachment 4 to this Enclosure under the filename "18 Hatch RAI 2 Calc Dwg.pdf."

E-3

ATTACHMENT I PRELIMINARY ARCON96 X/Q VALUES USED FOR THE EXHAUST FROM THE OPEN HOLE IN CONTAINMENT AND THE INTAKE AT THE NORMAL/EMERGENCY CONTROL ROOM AIR INTAKES vent Control Building Reactor Building 245.25 7036 ft emergency cc 5ft room intake 281.36 ft ntrolHl iegrees Assumed North True North 220.25 ft I

normal contro room intake EAI-1

ARCON96 input:

1. Hole Release to Normal Control Room Intake (casenormal)

N/S Distance hole to intake: 39.36 ft. - 15 ft. + 46 ft. + 211 ft. = 281.36 ft. (Ref. 2)

E/W Distance hole to intake: 35.25 ft. + 85 ft. + 90 ft. + 10 ft. (assumed) = 220.25 ft.

(Ref. 2)

Release distance = (281.36A2 ft. + 220.25A2 ft.)AO.5 = 357.2 ft. = 108.9 M Angle from assumed north intake to release point = 90 deg. + arcos (281.36 deg. /

357.2 deg.) = 90 deg. + 38 deg. = 128 deg.

Corrected Angle from true north, intake to release point (+30 deg., Ref. 1) = 90 deg. +

38 deg. + 30 deg. = 158 deg.

Plant grade Elev. 705 ft. (Ref. 1)

Intake Elev. 752 ft. (Ref. 1)

Intake above grade = 752 ft. - 705 ft. = 47 ft. = 14.3 m Hole Elev. (856.04 ft. dome peak (Ref. 2) + dome lowpoint 828.55 ft. (Ref. 2)) / 2 =

842 ft.

Hole above grade = 842 ft. - 705 ft. = 137 ft. = 41.8 m Reactor Building Area = 218.1 m2 (1/8) (Ref. 1)

2. Hole Release to Emergency Control Room Intake (case emergency)

N/S Distance hole to intake: 39.36 ft. - 15 ft. + 46 ft. = 70.36 ft. (Ref. 2)

E/W Distance hole to intake: 35.25 ft. + 85 ft. + 90 ft. + 45 - 10 ft. (assumed) = 245.25 ft.

(Ref. 2)

Release distance = (70.36A2 ft. + 245.25A2 ft.)AO.5 = 255.1 ft. = 77.8 m Angle from assumed north intake to release point = 90 deg. + arcos (245.25 deg. /

255.1deg.) = 90 deg. + 15.97 deg. = 106 deg.

Corrected Angle from true north, intake to release point (+30 deg., Ref. 1) = 90 deg. +

15.97 deg. + 30 deg. = 136 deg.

Plant grade Elev. 705 ft. (Ref. 1)

Intake Elev. 752 ft. (Ref. 2)

Intake above grade = 752 ft. - 705 ft. = 47 ft. = 14.3 m Hole Elev. (856.04 ft. dome peak (Ref. 2) + dome lowpoint 828.55 ft. (Ref. 2)) / 2 =

842 ft.

Hole above grade = 842 ft. - 705 ft. = 137 ft. = 41.8 m Reactor Building Area = 1744.7 m 2 (full) (Ref. 1)

EA1-2

Results:

ARCON96 X/Q values [sec/m 3]

Time Hole to Normal Hole to X/Q Value Used step Intake Emergency (SQN Control Room X/Q Intake calculation) 0-2 hr 5.16E-4 5.24E-4 5.63E-4 2-8 hr 3.35E-4 2.21 E-4 3.78E-4 8-24 hr 1.52E-4 1.03E-4 1.12E-4 1-4 day 1.15E-4 8.78E-5 9.38E-5 4-30 day 8.84E-5 6.67E-5 6.96E-5

References:

1. Calculation SQNSQS2-0209, "SQN CONTROL ROOM X/Q"

2. SQN Drawing No. 1, 2-47W200-1

3. Calculation SQNSQS2-0245, "Offsite and Control Room Doses Following a LOCA With a Temporary Hole in the Shield Building Using Regulatory Guide 1.183 Assumptions" EA1-3

ATTACHMENT 2A COPY OF THE ATMOSPHERIC DISPERSION COMPUTER CODE PROGRAM OUTPUTS FOR THE NORMAL CONTROL ROOM AIR INTAKE EA2A-1

casenormal b. log Program

Title:

Developed For:

ARCON96.

U.S. Nuclear Regulatory Commission office of Nuclear Reactor Regulation Division of Reactor Program Management Date:

June 25, 1997 11:00 a.m.

NRC Contacts:

J. Y.

Lee J.

J.

Hayes L.

A Brown Code Developer: J. V. Ramsdell Phone: (301) 415 1080 e-mail: jyll@nrc.gov Phone: (301) 415 3167 e-mail: jjh@nrc.gov Phone: (301) 415 1232 e-mail: lab2@nrc.gov Phone: (509) 372 6316 e-mail: j-ramsdell@pnl.gov Code Documentation:

NUREG/CR-6331 Rev.

1 The program was prepared for an agency of the united States Government.

Neither the United states Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibilities for any third party's use, or the results of such use, of any portion of this program or represents that its use by such third party would not infringe privately owned rights.

Program Run 2/28/2012 at 13:22:43 ARCON INPUT Number of Meteorological Data Files Meteorological Data File Names metsqnp_18yr.dat

=

1 Height of lower wind instrument (m)

=

9.7 Height of upper wind instrument (m)

=

46.4 wind speeds entered as miles per hour Ground-level release Release height (m)

=

41.8 Building Area (mA2)

=

218.1 Effluent vertical velocity (m/s)

=

.00 vent or stack flow (mA3/s)

=

.00 vent or stack radius (i)

=

.00 Direction.. intake to source (deg)

=

158 wind direction sector width (deg)

=

90 wind direction window (deg)

=

113 - 203 Distance to intake (m)

=

108.9 Intake height (m)

=

14.3 Terrain elevation difference (W)

=

.0 Output file names casenorrmal b. log casenorrmal b. cfd Minimum wind speed (m/s)

Surface roughness length (m) sector averaging constant Initial value of sigma y

.5

.10 4.0

.00 Page 1

EA2A-2

casenormalb.log Initial value of sigma z

=

.00 Expanded output for code testing not selected Total number of hours of data processed = 157801 Hours of missing data

=

6557 Hours direction in window

=

32633 Hours elevated plume w/ dir. in window

=

0 Hours of calm winds 8860 Hours direction not in window or calm

= 109751 DISTRIBUTION

SUMMARY

DATA BY AVERAGING INTERVAL AVER.

PER.

1 2

4 96 168 360 720 UPPER LIM.

1.OOE-03 1.OOE-03 1.OOE-03 1.

1.OOE-03 1.OOE-03 1.OOE-03 1.OOE-03 LOW LIM.

1.OOE-07 1.OOE-07 1.OOE-07 1.

1.OOE-07 1.OOE-07 1.OOE-07 1.OOE-07 ABOVE RANGE

0.

IN RANGE 41493.

54851.

70867.

BELOW RANGE

0.

ZERO 95187.

76921.

1014.

55.

0.

TOTAL X/QS

% NON ZERO 27.43 36.56 47.95 99.27 99.96 100.00 100.00 95th PERCENTILE X/Q VALUES 5.16E-04 4.79E-04 4.29E-04 3.

1.43E-04 1.25E-04 1.07E-04 9.57E-05 95% x/Q for standard averaging intervals 0 to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 5.16E-04 2 to 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 3.35E-04 8 to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 1.52E-04 1 to 4 days 1.15E-04 4 to 30 days 8.84E-05 8

12 24 0OE-03 0OE-07 0.

87208.

0.

56492.

60.69 1.OOE-03 1.OOE-07 0.

99715.

0.

46070.

68.40 1.OOE-03 1.OOE-07 0.

0.

26474.

81.59 80E-04 3.11E-04 2.28E-04 HOURLY VALUE RANGE MAX X/Q 7.20E-04 4.51E-04 CENTERLINE SECTOR-AVERAGE NORMAL PROGRAM COMPLETION MIN X/Q 4.64E-05 2.91E-05 Page 2 EA2A-3

X/Q CUMULATIVE FREQUENCY DISTRIBUTIONS XOQ 1

2 4

8 XOQ 12 24 96 168 360 720 Abv. Lim.

0.

Abv. Lim.

0.

9.120E-04

0.

9.120E-04

0.

8.318E-04

0.

8.318E-04

0.

7.586E-04

0.

7.586E-04

0.

6.918E-04 182.

64.

16.

1. 6.918E-04

0.

6.310E-04 1038. 505. 177.

30.

6.310E-04

0.

5.754E-04 1710. 1224. 577. 162.

5.754E-04

0.

5.248E-04 6718. 4305. 2177. 708.

5 4.786E-04 11039. 7539. 4253. 1816.

4.365E-04 16096. 11164. 6872. 3772.

3.981E-04 18991. 13350. 9509. 6007.

3.631E-04 21096. 15060. 11902. 8315.

3.311E-04 23452. 16876.14741.11074.

3.020E-04 25385. 18849. 17176.13712.

2.754E-04 26759. 22016. 19806.16749.

2.512E-04 28029. 24796. 22869. 19912.

2.291 E-04 29109. 28759. 26365. 23332.

2.089E-04 38526. 35160. 29983. 26661.

1.905E-04 39320. 37157. 32417. 30009.

1.738E-04 39738. 38704. 34636. 33596.

1.585E-04 40125. 40616. 38538. 37212.

1.445E-04 40463. 42206. 40539. 40236.

1.318E-04 40738. 43229. 43566. 44235.

1.202E-04 40955. 44576. 46067. 47194.

1.096E-04 41093. 45377. 49168. 50460.

1.OOOE-04 41214. 53069. 54218. 53863.

3700.

9.120E-05 41304. 53738. 55707. 56002.

11231.

8.318E-05 41374. 54033. 57105. 58146.

23878.

7.586E-05 41415. 54258. 58488. 61771.

37970.

6.918E-05 41452. 54452. 59697. 63732.

57352.

6.310E-05 41470. 54578. 60791. 65568.

73925.

5.754E-05 41479. 54689. 61816. 67918.

90155.

5.248E-05 41486. 54752. 68208. 72610.

107131.

4.786E-05 41492. 54797. 69768. 74028.

119270.

4.365E-05 41493. 54818. 70041. 74942.

128389.

3.981 E-05 41493. 54828. 70251. 76028.

135327.

3.631 E-05 41493. 54842. 70437. 77025.

139879.

3.311 E-05 41493. 54848. 70570. 77899.

142370.

3.020E-05 41493. 54850. 70679. 78943.

143862.

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26.

0.

4.786E-04 163.

4.365E-04 607 3.981E-04 1668 3.631E-04 343 3.311E-04 564 3.020E-04 802 2.754E-04 106 2.512E-04 137 2.291E-04 169 2.089E-04 203 1.905E-04 239 1.738E-04 277 1.585E-04 315 1.445E-04 354 1.318E-04 393 1.202E-04 431 1.096E-04 469 1.OOOE-04 507 9.120E-05 542 8.318E-05 578 7.586E-05 609 6.918E-05 641 6.310E-05 668 5.754E-05 692 5.248E-05 722 4.786E-05 743 4.365E-05 768 3.981 E-05 788 3.631 E-05 807 3.311E-05 838 3.020E-05 850

0.

0

3.

8.

0.

96.

48.

414.

22.

1316.

92.

2635.

05.

4640.

10.

7061.

76.

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67. 13089.

26. 16636.

53. 20766.

00. 25119.

70. 29605.

84. 34529.

59. 39402.

00. 44324.

62. 49231.

04. 54056.

66. 58727.

61.

63031.

76. 67336.

81.

71239.

86. 74969.

85. 78338.

32. 81722.

48. 84586.

44. 87392.

32. 90121.

56. 92289.

0.

0

0.

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106.

379.

1081.

2170.

3902.

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8681.

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136580.

0.

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EA2A-4

2.754E-05 41493. 54851. 70742. 79535.

145095.

2.512E-05 41493. 54851. 70804. 85834.

145441.

2.291 E-05 41493. 54851. 70828. 86581.

146114.

2.089E-05 41493. 54851. 70842. 86733.

146580.

1.905E-05 41493. 54851. 70850. 86844.

146726.

1.738E-05 41493. 54851. 70864. 86982.

146895.

1.585E-05 41493. 54851. 70864. 87053.

147007.

1.445E-05 41493. 54851. 70867. 87111.

147126.

1.318E-05 41493. 54851. 70867. 87155.

147180.

1.202E-05 41493. 54851. 70867. 87175.

147186.

1.096E-05 41493. 54851. 70867. 87187.

147190.

1.000E-05 41493. 54851. 70867. 87191.

147204.

9.120E-06 41493. 54851. 70867. 87201.

147220.

8.318E-06 41493. 54851. 70867. 87205.

147371.

7.586E-06 41493. 54851. 70867. 87206.

147491.

6.918E-06 41493. 54851. 70867. 87208.

147497.

6.310E-06 41493. 54851. 70867. 87208.

147522.

5.754E-06 41493. 54851. 70867. 87208.

147522.

5.248E-06 41493. 54851. 70867. 87208.

147522.

4.786E-06 41493. 54851. 70867. 87208.

147522.

4.365E-06 41493. 54851. 70867. 87208.

147522.

3.981E-06 41493. 54851. 70867. 87208.

147522.

3.631E-06 41493. 54851. 70867. 87208.

147522.

3.311E-06 41493. 54851. 70867. 87208.

147522.

3.020E-06 41493. 54851. 70867. 87208.

147522.

2.754E-06 41493. 54851. 70867. 87208.

147522.

2.512E-06 41493. 54851. 70867. 87208.

147522.

2.291E-06 41493. 54851. 70867. 87208.

147522.

2.754E-05 2.512E-05 2.291 E-05 2.089E-05 1.905E-05 1.738E-05 1.585E-05 1.445E-05 1.318E-05 1.202E-05 1.096E-05 1.OOOE-05 9.120E-06 8.318E-06 7.586E-06 6.918E-06 6.31 OE-06 5.754E-06 5.248E-06 4.786E-06 4.365E-06 3.981 E-06 3.631 E-06 3.311 E-06 3.020E-06 2.754E-06 2.512E-06 2.291 E-06 86793.

87871.

88961.

90558.

91300.

95055.

95710.

96112.

96429.

96816.

98928.

99461.

99546.

99608.

99651.

99672.

99683.

99694.

99702.

99704.

99706.

99713.

99715.

94413.

96387.

98281.

100066.

101713.

103405.

105234.

106185.

107177.

108066.

109997.

110612.

111058.

112571.

113012.

113330.

113680.

114150.

116851.

117181.

117241.

117274.

117309.

117316.

117324.

117328.

117329.

115294. 127842. 138899.

118090. 130596. 140369.

120424.

122596.

124513.

125859.

127375.

128732.

129801.

130529.

131548.

132131.

132801.

133265.

133688.

134174.

134374.

134784.

135139.

135417.

135613.

135822.

135945.

136060.

136272.

136547.

136555.

136584.

132744. 141756.

134434. 142790.

135493. 143505.

136559. 143828.

137513. 144127.

138215. 144464.

138784. 144573.

139344. 144685.

139923. 144799.

140333. 144872.

140665. 144989.

140917. 145152.

141104. 145172.

141294. 145298.

141494. 145314.

141588. 145354.

141677. 145355.

141787. 145364.

141837. 145376.

141928. 145376.

141962. 145377.

141985. 145378.

142016. 145378.

142057. 145379.

142109. 145379.

142113. 145379.

EA2A-5

2.089E-06 41493. 54851. 70867. 87208.

2.089E-06 99715. 117329. 136717. 142119. 145380.

147522.

1.905E-06 41493. 54851. 70867. 87208.

1.905E-06 99715. 117331. 136821. 142127. 145383.

147522.

1.738E-06 41493. 54851. 70867. 87208.

1.738E-06 99715. 117331. 136862. 142132. 145383.

147522.

1.585E-06 41493. 54851. 70867. 87208.

1.585E-06 99715. 117331. 136888. 142136. 145383.

147522.

1.445E-06 41493. 54851. 70867. 87208.

1.445E-06 99715. 117331. 136904. 142137. 145383.

147522.

1.318E-06 41493. 54851. 70867. 87208.

1.318E-06 99715. 117331. 137155. 142137. 145387.

147522.

1.202E-06 41493. 54851. 70867. 87208.

1.202E-06 99715. 117331. 137178. 142298. 145387.

147522.

1.096E-06 41493. 54851. 70867. 87208.

1.096E-06 99715. 117331. 137199. 142337. 145387.

147522.

1.000E-06 41493. 54851. 70867. 87208.

1.000E-06 99715. 117331. 137200. 142337. 145387.

147522.

9.120E-07 41493. 54851. 70867. 87208.

9.120E-07 99715. 117331. 137211. 142337. 145387.

147522.

8.318E-07 41493. 54851. 70867. 87208.

8.318E-07 99715. 117331. 137211. 142337. 145387.

147522.

7.586E-07 41493. 54851. 70867. 87208.

7.586E-07 99715. 117331. 137211. 142341. 145387.

147522.

6.918E-07 41493. 54851. 70867. 87208.

6.918E-07 99715. 117331. 137212. 142341. 145387.

147522.

6.310OE-07 41493. 54851. 70867. 87208.

6.310E-07 99715. 117331. 137212. 142341. 145387.

147522.

5.754E-07 41493. 54851. 70867. 87208.

5.754E-07 99715. 117331. 137212. 142341. 145416.

147522.

5.248E-07 41493. 54851. 70867. 87208.

5.248E-07 99715. 117331. 137212. 142341. 145416.

147522.

4.786E-07 41493. 54851. 70867. 87208.

4.786E-07 99715. 117331. 137212. 142341. 145416.

147522.

4.365E-07 41493. 54851. 70867. 87208.

4.365E-07 99715. 117331. 137212. 142341. 145416.

147522.

3.981 E-07 41493. 54851. 70867. 87208.

3.981E-07 99715. 117331. 137212. 142341. 145416.

147522.

3.631 E-07 41493. 54851. 70867. 87208.

3.631E-07 99715. 117331. 137212. 142341. 145416.

147522.

3.311 E-07 41493. 54851. 70867. 87208.

3.311E-07 99715. 117331. 137212. 142341. 145416.

147522.

3.020E-07 41493. 54851. 70867. 87208.

3.020E-07 99715. 117331. 137212. 142341. 145416.

147522.

2.754E-07 41493. 54851. 70867. 87208.

2.754E-07 99715. 117331. 137212. 142341. 145416.

147522.

2.512E-07 41493. 54851. 70867. 87208.

2.512E-07 99715. 117331. 137212. 142341. 145416.

147522.

2.291 E-07 41493. 54851. 70867. 87208.

2.291E-07 99715. 117331. 137212. 142341. 145416.

147522.

2.089E-07 41493. 54851. 70867. 87208.

2.089E-07 99715. 117331. 137212. 142341. 145416.

147522.

1.905E-07 41493. 54851. 70867. 87208.

1.905E-07 99715. 117331. 137212. 142341. 145416.

147522.

1.738E-07 41493. 54851. 70867. 87208.

1.738E-07 99715. 117331. 137212. 142341. 145416.

147522.

EA2A-6

1.585E-07 41493. 54851. 70867. 87208.

147522.

1.445E-07 41493. 54851. 70867. 87208.

147522.

1.318E-07 41493. 54851. 70867. 87208.

147522.

1.202E-07 41493. 54851. 70867. 87208.

147522.

1.096E-07 41493. 54851. 70867. 87208.

147522.

1.OOOE-07 41493. 54851. 70867. 87208.

147522.

Belw. Lim.

0.

0. Belw. Lim.

1.585E-07 99715. 117331. 137212.

1.445E-07 99715. 117331. 137212.

1.318E-07 99715. 117331. 137212.

1.202E-07 99715. 117331. 137212.

1.096E-07 99715. 117331. 137212.

1.OOOE-07 99715. 117331. 137212.

0.

142341.

145416.

EA2A-7

ATTACHMENT 2B COPY OF THE ATMOSPHERIC DISPERSION COMPUTER CODE PROGRAM OUTPUTS FOR THE EMERGENCY CONTROL ROOM AIR INTAKE EA2B-1

caseemergencyc.log Program

Title:

Developed For:

ARCON96.

U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Division of Reactor Program Management Date:

June 25, 1997 11:00 a.m.

NRC Contacts:

J.

Y. Lee J.

J.

Hayes L. A Brown Code Developer: J. V. Ramsdell Phone: (301) 415 1080 e-mail: jyll@nrc.gov Phone: (301) 415 3167 e-mail: jjh@nrc.gov Phone: (301) 415 1232 e-mail: lab2@nrc.gov Phone: (509) 372 6316 e-mail: j-ramsdell@pnl.gov code Documentation:

NUREG/CR-6331 Rev.

1 The program was prepared for an agency of the united States Government.

Neither the united states Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibilities for any third party's use, or the results of such use, of any portion of this program or represents that its use by such third party would not infringe privately owned rights.

Program Run 2/28/2012 at 14:33:01 ARCON INPUT Number of Meteorological Data Files Meteorological Data File Names metsqnp_18yr.dat

=

1 Height of lower wind instrument (m)

=

9.7 Height of upper wind instrument (m)

=

46.4 wind speeds entered as miles per hour Ground-level release Release height (m)

=

41.8 Building Area (mA2)

=

1744.7 Effluent vertical velocity (m/s)

=

.00 Vent or stack flow (mA3/s)

.00 Vent or stack radius (m)

=

.00 Direction.. intake to source (deg)

=

136 wind direction sector width (deg)

=

90 wind direction window (deg)

=

091 - 181 Distance to intake (m)

=

77.8 Intake height (m)

=

14.3 Terrain elevation difference (i)

=

.0 output file names caseemergencyc.log caseemergencyc.cfd Minimum wind Speed (m/s) surface roughness length (m)

Sector averaging constant Initial value of sigma y

.5

.10 4.0

.00 Page 1 EA2B-2

caseemergencyc.log Initial value of sigma z

=

.00 Expanded output for code testing not selected Total number of hours of data processed = 157801 Hours of missing data

=

6557 Hours direction in window

= 11953 Hours elevated plume w/ dir. in window

=

0 Hours of calm winds

=

8860 Hours direction not in window or calm

= 130431 DISTRIBUTION

SUMMARY

DATA BY AVERAGING INTERVAL AVER.

PER.

1 2

4 96 168 360 720 UPPER LIM.

1.OOE-02 1.OOE-02 1.OOE-02 1.

1.OOE-02 1.OOE-02 1.OOE-02 1.OOE-02 LOW LIM.

1.OOE-06 1.OOE-06 1.OOE-06 1.

1.OOE-06 1.OOE-06 1.OOE-06 1.OOE-06 ABOVE RANGE

0.

IN RANGE 20813.

30729.

45099.

BELOW RANGE

0.

1.

0.

ZERO 3243.

312.

0.

TOTAL X/Qs

% NON ZERO 13.76 20.48 30.52 97.65 99.78 100.00 100.00 95th PERCENTILE X/Q VALUES 5.24E-04 4.16E-04 3.53E-04 2.

1.08E-04 9.55E-05 8.10E-05 7.22E-05 95% X/Q for standard averaging intervals 0 to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 5.24E-04 2 to 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months 2.21E-04 8 to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 1.03E-04 1 to 4 days 8.78E-05 4 to 30 days 6.67E-05 8

12 24 0OE-02 0OE-06 0.

63986.

0.

79714.

44.53 1.OOE-02 1.OOE-06 0.

79149.

0.

66636.

54.29 1.OOE-02 1.OOE-06 0.

0.

40286.

71.99 97E-04 2.37E-04 1.68E-04 HOURLY VALUE RANGE MAX X/Q 1.21E-03 7.59E-04 CENTERLINE SECTOR-AVERAGE NORMAL PROGRAM COMPLETION MIN X/Q 8.04E-05 5.04E-05 Page 2 EA2B-3

X/Q CUMULATIVE FREQUENCY DISTRIBUTIONS XOQ 1

2 4

8 XOQ 12 24 96 168 360 720 Abv. Lim.

0.

Abv. Lim.

0.

9.120E-03

0.

9.120E-03

0.

8.318E-03

0.

8.318E-03

0.

7.586E-03

0.

7.586E-03

0.

6.918E-03

0.

6.918E-03

0.

6.310E-03

0.

6.310E-03

0.

5.754E-03

0.

5.754E-03

0.

5.248E-03

0.

5.248E-03

0.

4.786E-03

0.

4.786E-03

0.

4.365E-03

0.

4.365E-03

0.

3.981E-03

0.

3.981E-03

0.

3.631E-03

0.

3.631E-03

0.

3.311E-03

0.

3.311E-03

0.

3.020E-03

0.

3.020E-03

0.

2.754E-03

0.

2.754E-03

0.

2.512E-03

0.

2.512E-03

0.

2.291E-03

0.

2.291E-03

0.

2.089E-03

0.

2.089E-03

0.

1.905E-03

0.

1.905E-03

0.

1.738E-03

0.

1.738E-03

0.

1.585E-03

0.

1.585E-03

0.

1.445E-03

0.

1.445E-03

0.

1.318E-03

0.

1.318E-03

0.

1.202E-03

18.

1.

0.

1.202E-03

0.

1.096E-03 164.

48.

5.

0.

1.096E-03

0.

1.OOOE-03 343. 169.

36.

1.

1.OOOE-03

0.

9.120E-04 1555. 654. 178.

19.

9.120E-04

0.

8.318E-04 2635. 1306. 405.

60.

8.318E-04

0.

7.586E-04 3920. 1959. 699. 159.

7.586E-04

9.

0.

6.918E-04 4879. 2459. 1127. 337.

6.918E-04

61.

0.

6.310E-04 5681. 2943. 1643. 592.

6.310E-04 124.

0.

5.754E-04 6668. 3490. 2262. 952.

5.754E-04 226.

8.

0.

5.248E-04 7557. 4130. 2811. 1382.

5.248E-04 411.

30.

0.

4.786E-04 8310. 5328. 3582. 1949.

4.786E-04 683.

88.

0.

4.365E-04 9224. 6529. 4592. 2650.

4.365E-04 1060.

167.

0.

3.981E-04 9913. 8314. 5762. 3477.

3.981E-04 1540.

262.

0.

3.631E-04 10299. 9836. 6967. 4368.

3.631E-04 2135.

397.

0.

3.311E-04 12269. 11770. 8284. 5527.

3.311E-04 2867.

609.

0.

3.020E-04 20177. 15901. 10104. 6826.

3.020E-04 3869.

901.

25.

0.

2.754E-04 20323. 16928. 11355. 8636.

2.754E-04 4970.

1326.

65.

0.

2.512E-04 20415. 17876. 12722. 10153.

2.512E-04 6240.

1934.

146.

0.

2.291E-04 20502. 18742. 16798. 12566.

2.291E-04 7920.

2679.

179.

0.

2.089E-04 20576. 19687. 18650. 14868.

2.089E-04 9853.

3652.

257.

4.

0.

1.905E-04 20653. 20380. 20792. 17904.

1.905E-04 12122.

4863.

565.

113.

0.

1.738E-04 20700. 20932. 22517. 19990.

1.738E-04 14550.

6406.

922.

257.

0.

1.585E-04 20735. 30206. 28331. 23444.

1.585E-04 17239.

8348.

1355.

369.

0.

1.445E-04 20760. 30367. 29454. 25314.

1.445E-04 20337. 10764.

2013.

669.

15.

0.

1.318E-04 20778. 30458. 30736. 27264.

1.318E-04. 23634. 13587.

3081.

1215.

182.

0.

1.202E-04 20789. 30522. 31664. 32366.

1.202E-04 26621.

16770.

4508.

2117.

234.

0.

1.096E-04 20798. 30578. 32840. 34500.

1.096E-04 29906. 20452.

6432.

3461.

379.

0.

1.OOOE-04 20803. 30621. 33715. 36910.

1.OOOE-04 33066. 24563.

8867.

5606.

1067.

233.

9.120E-05 20809. 30664. 34291. 39157.

9.120E-05 35935. 28637. 12341.

8539.

2606.

703.

8.318E-05 20810. 30695. 35352. 41193.

8.318E-05 38891. 32807. 16589. 12625.

5857.

EA2B-4

1601.

7.586E-05 20813. 30713. 44688. 47320.

7.586E-05 43258. 37145. 21037. 17224.

10640.

4148.

6.918E-05 20813. 30718. 44803. 48451.

6.918E-05 46234. 41639. 26955. 22932. 17077.

10061.

6.310E-05 20813. 30722. 44870. 49548.

6.310E-05 48810. 45934. 33215. 29172. 24474.

18852.

5.754E-05 20813. 30726. 44929. 50529.

5.754E-05 51387. 50293. 39881. 36547. 33093.

29246.

5.248E-05 20813. 30728. 44974. 51878.

5.248E-05 56073. 54554. 46829. 45648. 44001.

43333.

4.786E-05 20813. 30729. 45036. 52706.

4.786E-05 158204. 58441.

53243. 54710. 55614.

58337.

4.365E-05 20813. 30729. 45065. 53162.

4.365E-05 60807. 62035. 59935. 63504. 66603.

72597.

3.981 E-05 20813. 30729. 45083. 63484.

3.981 E-05 62126. 66033. 66747. 72344. 77913.

86154.

3.631 E-05 20813. 30729. 45094. 63671.

3.631 E-05 63619. 69120. 73331. 80788. 88132.

97845.

3.311 E-05 20813. 30729. 45096. 63742.

3.311 E-05 65862. 72752. 79606. 88392. 97143.

107047.

3.020E-05 20813. 30729. 45097. 63808. '3.020E-05 66596. 75659. 85644. 95118. 105442.

114058.

2.754E-05 20813. 30729. 45098. 63844.

2.754E-05 69938. 78082. 90909. 101195. 112444.

121369.

2.512E-05 20813. 30729. 45098. 63884.

2.512E-05 73934. 82239. 95267. 106822. 118627.

128107.

2.291 E-05 20813. 30729. 45099. 63929.

2.291 E-05 74446. 83971. 100076. 111349. 123807.

132783.

2.089E-05 20813. 30729. 45099. 63957.

2.089E-05 74802. 86195. 103887. 115709. 127953.

136538.

1.905E-05 20813. 30729. 45099. 63973.

1.905E-05 75019. 87590. 107511. 119468. 131550.

139578.

1.738E-05 20813. 30729. 45099. 63984.

1.738E-05 75522. 89062. 110661. 122941. 134484.

141902.

1.585E-05 20813. 30729. 45099. 63984.

1.585E-05 78951.

92157. 113572. 125602. 137173.

143847.'

1.445E-05 20813. 30729. 45099. 63985.

1.445E-05 79013. 92866. 116250. 127876. 138693.

145263.

1.318E-05 20813. 30729. 45099. 63985.

1.318E-05 79064. 96020. 118489. 130387. 140278.

146054.

1.202E-05 20813. 30729. 45099. 63986.

1.202E-05 79082. 96584. 120580. 132247. 141857.

146540.

1.096E-05 20813. 30729. 45099. 63986.

1.096E-05 79101.

97274. 122244. 133859. 142811.

146984.

1.000E-05 20813. 30729. 45099. 63986.

1.000E-05 79118. 97612. 123810. 135214. 143463.

147033.

9.120E-06 20813. 30729. 45099. 63986.

9.120E-06 79138. 98033. 124926. 136268. 143961.

147293.

8.318E-06 20813. 30729. 45099. 63986.

8.318E-06 79141. 103283. 126519. 137235. 144466.

147320.

7.586E-06 20813. 30729. 45099. 63986.

7.586E-06 79146. 103412. 127513. 137827. 144647.

147426.

6.918E'06 20813. 30729. 45099. 63986.

6.918E-06 79147. 103428. 128417. 138419. 144887.

147468.

6.310E-06 20813. 30729. 45099. 63986.

6.310OE-06 79148. 103472. 129976. 138979. 145010.

EA2B-5

147509.

5.754E-06 20813. 30729. 45099. 63986.

147522.

5.248E-06 20813. 30729. 45099. 63986.

147522.

4.786E-06 20813. 30729. 45099. 63986.

147522.

4.365E-06 20813. 30729. 45099. 63986.

147522.

3.981E-06 20813. 30729. 45099. 63986.

147522.

3.631 E-06 20813. 30729. 45099. 63986.

147522.

3.311 E-06 20813. 30729. 45099. 63986.

147522.

3.020E-06 20813. 30729. 45099. 63986.

147522.

2.754E-06 20813. 30729. 45099. 63986.

147522.

2.512E-06 20813. 30729. 45099. 63986.

147522.

2.291 E-06 20813. 30729. 45099. 63986.

147522.

2.089E-06 20813. 30729. 45099. 63986.

147522.

1.905E-06 20813. 30729. 45099. 63986.

147522.

1.738E-06 20813. 30729. 45099. 63986.

147522.

1.585E-06 20813. 30729. 45099. 63986.

147522.

1.445E-06 20813. 30729. 45099. 63986.

147522.

1.318E-06 20813. 30729. 45099. 63986.

147522.

1.202E-06 20813. 30729. 45099. 63986.

147522.

1.096E-06 20813. 30729. 45099. 63986.

147522.

1.OOOE-06 20813. 30729. 45099. 63986.

147522.

Belw. Lim.

0.

0. Belw. Lim.

5.754E-06 5.248E-06 4.786E-06 4.365E-06 3.981 E-06 3.631 E-06 3.311 E-06 3.020E-06 2.754E-06 2.512E-06 2.291 E-06 2.089E-06 1.905E-06 1.738E-06 1.585E-06 1.445E-06 1.318E-06 1.202E-06 1.096E-06 1.OOOE-06 79148. 103485.

79148. 103500.

79149. 103515.

79149. 103516.

79149. 103518.

79149. 103519.

130419.

130940.

131573.

132048.

132662.

132832.

133093.

133304.

133580.

133713.

133762.

134917.

134963.

134980.

134981.

134982.

139355.

139669.

140186.

140418.

141078.

141326.

141355.

141393.

141550.

141590.

141647.

141686.

141742.

141820.

141852.

141918.

142066.

142084.

145035.

145130.

145174.

145234.

145265.

145270.

145271.

145367.

145391.

145400.

145416.

0.

1.

0.

EA2B-6

ATTACHMENT 3 FULL SIZE COPY OF DIAGRAM USED IN THE DESIGN BASIS SQN CONTROL ROOM X/Q CALCULATION EA3-1

ATTACHMENT 4 CD DISC Disc contains the following:

1. File "metsqnp_1 8yr.dat" - Meteorological data inputs for the atmospheric dispersion computer codes (e.g., ARCON96)

2. File "18 Hatch RAI 2 Calc Dwg.pdf' - Diagram as used in the design basis SQN Control Room X/Q calculation EA4-1

v t e Letter Sequence Request
TAC:ME7026, (Withdrawn, Closed)
Initiation Request, Request, Request, Request, Request, Request Acceptance Administration Questions 29 December 2011 30 January 2012 15 May 2012 Answers 27 January 2012 Results Withdrawal Other: ML12038A249
MONTHYEAR2012-01-30 [Table View]

ML12074A036

Text

Subject:

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