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{{#Wiki_filter:February 22, 2006  
{{#Wiki_filter:February 22, 2006 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:
 
In the Matter of                       )    Docket No. 50-327 Tennessee Valley Authority             )
U.S. Nuclear Regulatory Commission  
SEQUOYAH NUCLEAR PLANT (SQN) - RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING UNIT 1 STEAM GENERATOR (SG)
 
REPORTS FROM CYCLE 13 REFUELING OUTAGE (TAC NO. MC8712)
ATTN: Document Control Desk  
 
Washington, D.C. 20555  
 
Gentlemen:  
 
In the Matter of                 )    Docket No. 50-327 Tennessee Valley Authority   )  
 
SEQUOYAH NUCLEAR PLANT (SQN) - RESPONSE TO REQUEST FOR  
 
ADDITIONAL INFORMATION REGARDING UNIT 1 STEAM GENERATOR (SG)  
 
REPORTS FROM CYCLE 13 REFUELING OUTAGE (TAC NO. MC8712)  


==Reference:==
==Reference:==
NRC letter to TVA dated January 13, 2006, "Sequoyah Nuclear Plant, Unit 1 - Request for  
NRC letter to TVA dated January 13, 2006, Sequoyah Nuclear Plant, Unit 1 - Request for Additional Information Regarding the Cycle 13 Steam Generator Tube Inservice Inspections (TAC No. MC8712)
 
The enclosure to this letter provides additional information requested by the referenced letter. The additional information includes diagrams that help clarify the design features of the SQN Unit 1 replacement SGs.
Additional Information Regarding the Cycle 13  
Please direct questions concerning this issue to me at (423) 843-7170 or J. D. Smith at (423) 843-6672.
 
Sincerely, Original signed by James D. Smith for:
Steam Generator Tube Inservice Inspections (TAC  
P. L. Pace Manager, Site Licensing and Industry Affairs Enclosure cc: See page 2
 
No. MC8712)"
The enclosure to this letter provides additional information  
 
requested by the referenced letter. The additional  
 
information includes diagrams that help clarify the design  
 
features of the SQN Unit 1 replacement SGs.  
 
Please direct questions concerning this issue to me at  
 
(423) 843-7170 or J. D. Smith at (423) 843-6672.
Sincerely, Original signed by James D. Smith for:  


P. L. Pace
U.S. Nuclear Regulatory Commission Page 2 February 22, 2006 cc (Enclosure):
Mr. Douglas V. Pickett, Senior Project Manager U.S. Nuclear Regulatory Commission Mail Stop O8G-9a One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2739 NRC Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy-Daisy, Tennessee 37379-3624 Regional Administrator U.S. Nuclear Regulatory Commission Region II 61 Forsythe St., SW, Suite 23T85 Atlanta, Georgia 30303-3415


Manager, Site Licensing and
ENCLOSURE TENNESSEE VALLEY AUTHORITY (TVA)
 
Industry Affairs
 
Enclosure
 
cc:  See page 2 U.S. Nuclear Regulatory Commission Page 2 February 22, 2006
 
cc (Enclosure):
Mr. Douglas V. Pickett, Senior Project Manager
 
U.S. Nuclear Regulatory Commission
 
Mail Stop O8G-9a
 
One White Flint North
 
11555 Rockville Pike
 
Rockville, Maryland 20852-2739
 
NRC Resident Inspector
 
Sequoyah Nuclear Plant
 
2600 Igou Ferry Road
 
Soddy-Daisy, Tennessee 37379-3624
 
Regional Administrator
 
U.S. Nuclear Regulatory Commission
 
Region II
 
61 Forsythe St., SW, Suite 23T85
 
Atlanta, Georgia 30303-3415
 
E1-1 ENCLOSURE TENNESSEE VALLEY AUTHORITY (TVA)
SEQUOYAH NUCLEAR PLANT (SQN)
SEQUOYAH NUCLEAR PLANT (SQN)
UNIT 1 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING
UNIT 1 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING THE CYCLE 13 STEAM GENERATOR TUBE INSERVICE INSPECTIONS NRC Question 1 Your report indicated that 100-percent of the dents and dings greater than or equal to 2-volts between the top of the hot leg tubesheet and the top of the cold leg tubesheet were examined with a +Point' probe. Discuss the results of these
+Point' probe inspections, including the number of dents/dings in each SG. In addition, discuss if there were any new dents/dings or any "anomalous" dent signals.
TVA Response All greater than or equal to 2 volt dents were examined during the Sequoyah (SQN) end of cycle 13 (EOC-13) inservice inspection (ISI) using Plus Point probes and no degradation was identified.
The number of dents identified per SG during the SQN EOC-13 ISI is compared to the number identified during the SQN preservice inspection (PSI) below.
Number of Dents Comparison 90                                      82 80 70                                          66 60 Dents >= 2v 50 40 30                                                25 20          13                                        15 11            12    10 10 0
SG-1          SG-2              SG-3    SG-4 S1C12 PSI    S1C13 E1-1


THE CYCLE 13 STEAM GENERATOR TUBE INSERVICE INSPECTIONS NRC Question 1 Your report indicated that 100-percent of the dents and dings
The total number of dents identified during the EOC-13 ISI was 104 as compared to 130 identified during the SQN PSI.
 
The differences in the reduction in numbers can be attributed to the following:
greater than or equal to 2-volts between the top of the hot
 
leg tubesheet and the top of the cold leg tubesheet were
 
examined with a +PointŽ probe. Discuss the results of these
 
+PointŽ probe inspections, including the number of
 
dents/dings in each SG. In addition, discuss if there were
 
any new dents/dings or any "anomalous" dent signals.
TVA Response All greater than or equal to 2 volt dents were examined during the Sequoyah (SQN) end of cycle 13 (EOC-13) inservice
 
inspection (ISI) using Plus Point probes and no degradation
 
was identified.
The number of dents identified per SG during the SQN EOC-13
 
ISI is compared to the number identified during the SQN
 
preservice inspection (PSI) below. Number of Dents Comparison 11 12 82 25 13 10 66 15 0 10 20 30 40 50 60 70 80 90SG-1SG-2SG-3SG-4Dents >= 2v S1C12 PSI S1C13 E1-2 The total number of dents identified during the EOC-13 ISI was 104 as compared to 130 identified during the SQN PSI.
 
The differences in the reduction in numbers can be attributed  
 
to the following:
: 1. The screening criterion for identifying dents is 2 volts.
: 1. The screening criterion for identifying dents is 2 volts.
It is expected that with operation of the unit an oxide  
It is expected that with operation of the unit an oxide layer forms causing measured voltages to decrease slightly. Some of the baseline dents that were called near 2 volts are measured less than 2 volts during the ISI, thus not meeting the screening criterion. This could also be attributed to eddy current uncertainties.
 
: 2. During the PSI, the rules for the computerized data system (CDS) for identifying dents were discovered to be too conservative inside the tubesheet. On the first two SGs (#3 and #4) when dents were examined with a plus point coil, some of the signals were actually slight geometry variations in the expanded region of the tube.
layer forms causing measured voltages to decrease  
For the next 2 SGs and for the ISI (#1 and #2), the rules were modified. Thus fewer dents were identified.
 
Six new DNT indications were identified during the SQN EOC-13 ISI using the greater than or equal to 2 volt screening criterion and are tabulated as follows showing the comparison to the SQN PSI calls:
slightly. Some of the baseline dents that were called  
RSG   Row Col   Location Cyc13 ISI      PSI 1     8   22   VS3+0.72     2.09v     1.94v 1     16   100 DS1+2.30     4.90v     (1) 1     16   122 DS1+2.32     4.05v     (1) 1     43   7   VS2+1.28     2.00v     1.93v 3     43   43   C02-1.60     2.41v     1.89v 3     43   49   C02-1.60     2.13v     1.98v Note (1):
 
A look back to PSI shows a geometry anomaly at the bend transition for these two tubes that was interpreted during the ISI (EOC-13) as a dent. The same small signal was recognized during the PSI as an occasional consequence of the tube bending process and not identified as a dent.
near 2 volts are measured less than 2 volts during the  
This signal is still present and unchanged.
 
The discussion above shows there were no new indications or anomalous signals identified during the EOC-13 ISI following operation after the baseline PSI.
ISI, thus not meeting the screening criterion. This  
E1-2
 
could also be attributed to eddy current uncertainties.
: 2. During the PSI, the rules for the computerized data system (CDS) for identifying dents were discovered to be  
 
too conservative inside the tubesheet. On the first two  
 
SGs (#3 and #4) when dents were examined with a plus  
 
point coil, some of the signals were actually slight  
 
geometry variations in the expanded region of the tube.
 
For the next 2 SGs and for the ISI (#1 and #2), the rules  
 
were modified. Thus fewer dents were identified.  
 
Six new DNT indications were identified during the SQN EOC-13  
 
ISI using the greater than or equal to 2 volt screening  
 
criterion and are tabulated as follows showing the comparison  
 
to the SQN PSI calls:  
 
RSG Row Col Location Cyc13 ISI      PSI 1 8 22 VS3+0.72   2.09v     1.94v 1 16 100 DS1+2.30   4.90v     (1) 1 16 122 DS1+2.32   4.05v     (1) 1 43 7 VS2+1.28   2.00v     1.93v 3 43 43 C02-1.60   2.41v     1.89v 3 43 49 C02-1.60   2.13v     1.98v  
 
Note (1):  


A look back to PSI shows a geometry anomaly at the bend
NRC Question 2 Please indicate if the 11 wear indications in the area of the 2nd and 4th vertical straps were inspected with bobbin and
+Point' probes. If the wear indications were not inspected with a +Point' probe, please discuss how you concluded that the indications were wear. In addition, the staff noted that several of the wear indications were located in the same general vicinity. Please provide any insights on the pattern of the wear indications.
TVA Response The eleven wear indications in the area of the 2nd and 4th vertical straps were inspected with both bobbin and plus point probes. Wear was confirmed with plus point.
Westinghouse analyzed these wear indications by developing WCAP-16407-P to describe the likely cause and examine the probability of future indications. The results are summarized below.
Cause:
The most likely cause of tube wear was identified as local clearance variations. Vertical strip arrays VS2 and VS4 have no lock-bars so tube to support clearance has the potential for small localized deviations from optimal clearance. For example, when the vertical strips of VS2 and VS4 were welded to the middle arch plates, the strips might have had local deviations in spacing from each other or might have deviated from a vertical orientation due to weld distortion. Either case would result in less than optimal tube to support clearances. It is feasible that a few vertical strips could have slightly larger tube clearances. These larger clearances would result in increased tube vibration amplitudes. While the SQN U1 RSGs upper bundle support (UBS) design provides excellent support against flow induced vibration (FIV), the high circulation ratio, which is beneficial in avoiding tube corrosion phenomena, results in increased fluid forces in the UBS region. In some local regions enlarged tube to support clearances in combination with increased fluid forces might have lead to the mild tube wear indications.
Future Wear Prediction:
Comprehensive wear progression trending data for tube wear at vertical strips was available from operating experience of Reference SGs at a CE plant. The geometry of the UBS is E1-3


transition for these two tubes that was interpreted during
similar between the Reference plant and Sequoyah in the local region of interest. Trending demonstrates indication stabilization (i.e., rate slows down as tube to support bearing area increases) and suggests volumetrically linear wear progression. Using SQN U1 RSG Tube Wear Curves of WCAP-16407-P it can be projected that a tube which incurred a 17%
 
wall penetration in the first cycle, would not reach the ASME Section XI (40%) plugging criteria until sometime during the ninth cycle of operation.
the ISI (EOC-13) as a dent. The same small signal was
NRC Question 3 Your report provided information about flaws in specific tubes and at specific locations within a tube. In order for the U.S. Nuclear Regulatory Commission staff to better understand where your indications are being detected and for future reference, please provide the following information regarding the design of your replacement SGs: a tubesheet map, a tube support plate diagram, the heat transfer surface area, the tubesheet thickness (with and without the clad),
 
the lattice grid thickness, the tube support plate thickness, and a description of the U-bend support system, including the thickness and the tubing supported by the various supports.
recognized during the PSI as an occasional consequence of
In addition, discuss whether you have a flow distribution baffle to distribute flow at the top of the tubesheet, including the thickness.
 
the tube bending process and not identified as a dent. 
 
This signal is still present and unchanged. 
 
The discussion above shows there were no new indications or
 
anomalous signals identified during the EOC-13 ISI following
 
operation after the baseline PSI.
E1-3 NRC Question 2
 
Please indicate if the 11 wear indications in the area of the 2 nd and 4 th vertical straps were inspected with bobbin and
+PointŽ probes. If the wear indications were not inspected
 
with a +PointŽ probe, please discuss how you concluded that
 
the indications were wear. In addition, the staff noted that
 
several of the wear indications were located in the same
 
general vicinity. Please provide any insights on the pattern
 
of the wear indications.
TVA Response
 
The eleven wear indications in the area of the 2nd and 4th
 
vertical straps were inspected with both bobbin and plus
 
point probes. Wear was confirmed with plus point.
 
Westinghouse analyzed these wear indications by developing
 
WCAP-16407-P to describe the likely cause and examine the
 
probability of future indications. The results are
 
summarized below.
 
Cause:
 
The most likely cause of tube wear was identified as local
 
clearance variations. Vertical strip arrays VS2 and VS4 have
 
no lock-bars so tube to support clearance has the potential
 
for small localized deviations from optimal clearance. For
 
example, when the vertical strips of VS2 and VS4 were welded
 
to the middle arch plates, the strips might have had local
 
deviations in spacing from each other or might have deviated
 
from a vertical orientation due to weld distortion. Either
 
case would result in less than optimal tube to support
 
clearances. It is feasible that a few vertical strips could
 
have slightly larger tube clearances. These larger
 
clearances would result in increased tube vibration
 
amplitudes. While the SQN U1 RSG's upper bundle support (UBS) design provides excellent support against flow induced
 
vibration (FIV), the high circulation ratio, which is
 
beneficial in avoiding tube corrosion phenomena, results in
 
increased fluid forces in the UBS region. In some local
 
regions enlarged tube to support clearances in combination
 
with increased fluid forces might have lead to the mild tube
 
wear indications.
 
Future Wear Prediction:
 
Comprehensive wear progression trending data for tube wear at
 
vertical strips was available from operating experience of
 
Reference SG's at a CE plant. The geometry of the UBS is E1-4 similar between the Reference plant and Sequoyah in the local region of interest. Trending demonstrates indication  
 
stabilization (i.e., rate slows down as tube to support  
 
bearing area increases) and suggests volumetrically linear  
 
wear progression. Using SQN U1 RSG Tube Wear Curves of WCAP-
 
16407-P it can be projected that a tube which incurred a 17%  
 
wall penetration in the first cycle, would not reach the ASME  
 
Section XI (40%) plugging criteria until sometime during the  
 
ninth cycle of operation.
NRC Question 3
 
Your report provided information about flaws in specific  
 
tubes and at specific locations within a tube. In order for  
 
the U.S. Nuclear Regulatory Commission staff to better  
 
understand where your indications are being detected and for  
 
future reference, please provide the following information  
 
regarding the design of your replacement SGs: a tubesheet  
 
map, a tube support plate diagram, the heat transfer surface  
 
area, the tubesheet thickness (with and without the clad),
the lattice grid thickness, the tube support plate thickness, and a description of the U-bend support system, including the  
 
thickness and the tubing supported by the various supports.
 
In addition, discuss whether you have a flow distribution  
 
baffle to distribute flow at the top of the tubesheet, including the thickness.
TVA Response Steam Generator Design:
TVA Response Steam Generator Design:
There is no flow distribution baffle in the SQN U1 Replacement SG design.
There is no flow distribution baffle in the SQN U1 Replacement SG design.
Sequoyah Unit 1 is a Westinghouse PWR with 4 steam generators. These are replacements for the previous  
Sequoyah Unit 1 is a Westinghouse PWR with 4 steam generators. These are replacements for the previous Westinghouse Model 51 steam generators. Each steam generator contains 4983 U-bend tubes made of thermally treated Inconel 690. The generators are designated as Model 57AG. This comes from approximately 57,000 square feet of surface area (57) and an Advanced Grid design for the tube supports, hence 57AG. The tubes are 0.750 in diameter with a nominal wall thickness of 0.043. All support structures are 409SS.
 
Various descriptions and drawings follow.
Westinghouse Model 51 steam generators. Each steam generator  
E1-4
 
contains 4983 U-bend tubes made of thermally treated Inconel  
 
690. The generators are designated as Model 57AG. This comes  
 
from approximately 57,000 square feet of surface area (57)  
 
and an "Advanced Grid" design for the tube supports, hence  
 
"57AG."  The tubes are 0.750" in diameter with a nominal wall  
 
thickness of 0.043."  All support structures are 409SS.
 
Various descriptions and drawings follow.  
 
E1-5 Sequoyah Unit 1 Tubesheet The tube sheet, as shown above, is a triangular pitch design with tubes designated by row and column. There are 103 rows
 
and 125 columns in each leg of the four steam generators. 
 
The tubes are expanded full length of the tube sheet using a
 
hydraulic expansion process. There are 13 blank spaces in
 
each tubesheet for stay rods. The locations of these blanks
 
are as follows:
Stay rod tube numbers  79-39 79-63 79-87  47-27 47-51 47-75 47-99  15-15 15-33 15-51 15-75 15-93 15-111 Location of Stay Rods The Advanced Tube Support Grid (ATSG) structures are 409 stainless steel which is a ferritic stainless. Tubes will be


even numbered row - even numbered column or odd numbered row  
Sequoyah Unit 1 Tubesheet The tube sheet, as shown above, is a triangular pitch design with tubes designated by row and column. There are 103 rows and 125 columns in each leg of the four steam generators.
The tubes are expanded full length of the tube sheet using a hydraulic expansion process. There are 13 blank spaces in each tubesheet for stay rods. The locations of these blanks are as follows:
Stay rod tube numbers 79-39        79-63      79-87 47-27      47-51          47-75      47-99 15-15  15-33        15-51      15-75      15-93  15-111 Location of Stay Rods The Advanced Tube Support Grid (ATSG) structures are 409 stainless steel which is a ferritic stainless. Tubes will be even numbered row - even numbered column or odd numbered row
- odd numbered column. Support structure measurements are provided in the following table while figures following illustrate a cross sectional view of the steam generator support structures and specific support nomenclature.
Additional tables list all dimensional and design specifics relative to the support structures within the Sequoyah steam generators and give the u-bend support structures through E1-5


- odd numbered column. Support structure measurements are
which the various tubes pass. In addition, lists of tube dimensions by row with respect tostraight and curved sections are provided. Finally, figures show drawings of the supports and Ventilated Support Bars (VSB). The tubes through and including row 16 were heat treated the entire length.
 
Sequoyah Support Structure Measurements Location         Inches from TE         Center to Center Tube End                 0.0 Top of Tubesheet         25.25                 25.25 Center #1 TSP           45.25                   20.0 Center #2 TSP           89.22                 43.97 Center #3 TSP           133.19                 43.97 Center #4 TSP           177.16                 43.97 Center #5 TSP           221.13                 43.97 Center #6 TSP           265.10                 43.97 Center #7 TSP           309.07                 43.97 Model 57AG E1-6
provided in the following table while figures following
 
illustrate a cross sectional view of the steam generator
 
support structures and specific support nomenclature. 
 
Additional tables list all dimensional and design specifics
 
relative to the support structures within the Sequoyah steam
 
generators and give the u-bend support structures through E1-6 which the various tubes pass. In addition, lists of tube dimensions by row with respect tostraight and curved sections  
 
are provided. Finally, figures show drawings of the supports  
 
and Ventilated Support Bars (VSB). The tubes through and  
 
including row 16 were heat treated the entire length.
Sequoyah Support Structure Measurements Location Inches from TE Center to Center Tube End 0.0 Top of Tubesheet 25.25 25.25 Center #1 TSP 45.25 20.0 Center #2 TSP 89.22 43.97 Center #3 TSP 133.19 43.97 Center #4 TSP 177.16 43.97 Center #5 TSP 221.13 43.97 Center #6 TSP 265.10 43.97 Center #7 TSP 309.07 43.97 Model 57AG E1-7    SEQUOYAH 1 DESIGN SPECIFICS Tube-sheet Data:
Hole diameter            -        0.758 Pitch                    - 1.0625 Thickness      - 25.25 (includes 0.25" clad)
Expansion process    - Hydraulic (full expansion)


SEQUOYAH 1 DESIGN SPECIFICS Tube-sheet Data:
Hole diameter        -  0.758 Pitch                - 1.0625 Thickness            -  25.25 (includes 0.25 clad)
Expansion process    -  Hydraulic (full expansion)
Tube Support Data:
Tube Support Data:
Hole geometry     - Lattice Grid Lattice dimensions    - 0.765 minimum tube clearance Width x thickness    - 2.00 & 1.00 x 0.145 (thick portion)
Hole geometry       - Lattice Grid Lattice dimensions -   0.765 minimum tube clearance Width x thickness -     2.00 & 1.00 x 0.145 (thick portion)
Material                   - 409 SS  
Material             - 409 SS Ventilated Support Bar Data:
 
Lock Bar Shape     -   rectangular Width x thickness       -     0.5 x 0.09 Straps Shape       -   rectangular Width x thickness         -     2.0 x 0.16 Material           -   409 SS Tube Data:
Ventilated Support Bar Data:
OD       -       0.750 ID       -       0.664 Wall thickness:
Lock Bar Shape    - rectangular Width x thickness   - 0.5 x 0.09 Straps Shape    - rectangular Width x thickness   - 2.0 x 0.16 Material                   - 409 SS  
Nominal -       0.043 Number of tubes/SG -         4983 U-bend radius:
 
Maximum         -     57.375 Minimum        -      3.188 E1-7
Tube Data:
OD - 0.750 ID - 0.664  
 
Wall thickness:
Nominal - 0.043  
 
Number of tubes/SG - 4983 U-bend radius:
Maximum - 57.375  


Minimum - 3.188
Rows      Structures Through Which the Tubes Pass 1-36    DS1                VS3                  DS2 37-75    DS1          VS2    VS3    VS4          DS2 76-103  DS1  VS1    VS2    VS3    VS4    VS5    DS2 U-Bend Support Intersections ATSG Lattice E1-8


E1-8 Rows Structures Through Which the Tubes Pass 1-36 DS1  VS3  DS2 37-75 DS1 VS2 VS3VS4  DS2 76-103 DS1VS1VS2 VS3VS4 VS5 DS2 U-Bend Support Intersections ATSG Lattice
ATSG Top View ATSG E1-9


E1-9 ATSG Top View ATSG E1-10          U-Bend Support Strap Ventilated Support Bar (VSB)
U-Bend Support Strap Ventilated Support Bar (VSB)
Bend Support Structures Ventilated Support Bars (VSB)
Bend Support Structures Ventilated Support Bars (VSB)
E1-10


E1-11 Tube Dimensions by Row 103 rows x 125 columnsTubesRow#"A""B""C""D"(Developed Length)Row#"A""B""C""D"(Developed Length)1616.3750010.013830322.26000319.07250648.15883535361.6250096.800324367.76000336.94750770.69532 2627.4375011.682798323.13500319.41625650.51530545262.6875098.469295368.63500337.29125773.051793638.5000013.351769324.01000319.76000652.87177555363.75000100.138266369.51000337.63500775.408274629.5625015.020740324.88500320.10375655.22824565264.81250101.807237370.38500337.97875777.76474 56310.6250016.689711325.76000320.44750657.58471575165.87500103.476208371.26000338.32250780.12121 66211.6875018.358682326.63500320.79125659.94118585266.93750105.145179372.13500338.66625782.47768 76312.7500020.027653327.51000321.13500662.29765595168.00000106.814150373.01000339.01000784.83415 86213.8125021.696624328.38500321.47875664.65412605069.06250108.483121373.88500339.35375787.19062 96314.8750023.365595329.26000321.82250667.01060614970.12500110.152092374.76000339.69750789.54709106215.9375025.034566330.13500322.16625669.36707625071.18750111.821064375.63500340.04125791.90356 116317.0000026.703538331.01000322.51000671.72354634972.25000113.490035376.51000340.38500794.26003 126218.0625028.372509331.88500322.85375674.08001644873.31250115.159006377.38500340.72875796.61651 136119.1250030.041480332.76000323.19750676.43648654774.37500116.827977378.26000341.07250798.97298146220.1875031.710451333.63500323.54125678.79295664875.43750118.496948379.13500341.41625801.32945155521.2500033.379422334.51000323.88500681.14942674776.50000120.165919380.01000341.76000803.68592 166222.3125035.048393335.38500324.22875683.50589684677.56250121.834890380.88500342.10375806.04239 176123.3750036.717364336.26000324.57250685.86236694578.62500123.503861381.76000342.44750808.39886 186224.4375038.386335337.13500324.91625688.21884704679.68750125.172832382.63500342.79125810.75533 196125.5000040.055306338.01000325.26000690.57531714580.75000126.841803383.51000343.13500813.11180 206226.5625041.724277338.88500325.60375692.93178724481.81250128.510774384.38500343.47875815.46827 216127.6250043.393249339.76000325.94750695.28825734382.87500130.179746385.26000343.82250817.82475 226028.6875045.062220340.63500326.29125697.64472744283.93750131.848717386.13500344.16625820.18122 236129.7500046.731191341.51000326.63500700.00119754385.00000133.517688387.01000344.51000822.53769 246030.8125048.400162342.38500326.97875702.35766764286.06250135.186659387.88500344.85375824.89416 256131.8750050.069133343.26000327.32250704.71413774187.12500136.855630388.76000345.19750827.25063266032.9375051.738104344.13500327.66625707.07060784088.18750138.524601389.63500345.54125829.60710275934.0000053.407075345.01000328.01000709.42708793689.25000140.193572390.51000345.88500831.96357 286035.0625055.076046345.88500328.35375711.78355803890.31250141.862543391.38500346.22875834.32004 295936.1250056.745017346.76000328.69750714.14002813991.37500143.531514392.26000346.57250836.67651 306037.1875058.413988347.63500329.04125716.49649823892.43750145.200485393.13500346.91625839.03299 315938.2500060.082959348.51000329.38500718.85296833793.50000146.869457394.01000347.26000841.38946 325839.3125061.751931349.38500329.72875721.20943843694.56250148.538428394.88500347.60375843.74593 335940.3750063.420902350.26000330.07250723.56590853595.62500150.207399395.76000347.94750846.10240 345841.4375065.089873351.13500330.41625725.92237863496.68750151.876370396.63500348.29125848.45887 355942.5000066.758844352.01000330.76000728.27884873397.75000153.545341397.51000348.63500850.81534 365843.5625068.427815352.88500331.10375730.63531883298.81250155.214312398.38500348.97875853.17181375744.6250070.096786353.76000331.44750732.99179893199.87500156.883283399.26000349.32250855.52828385845.6875071.765757354.63500331.79125735.348269030100.93750158.552254400.13500349.66625857.88475 395746.7500073.434728355.51000332.13500737.704739129102.00000160.221225401.01000350.01000860.24123 405847.8125075.103699356.38500332.47875740.061209228103.06250161.890196401.88500350.35375862.59770 415748.8750076.772670357.26000332.82250742.417679327104.12500163.559168402.76000350.69750864.95417 425649.9375078.441642358.13500333.16625744.774149426105.18750165.228139403.63500351.04125867.31064 435751.0000080.110613359.01000333.51000747.130619525106.25000166.897110404.51000351.38500869.66711 445652.0625081.779584359.88500333.85375749.487089622107.31250168.566081405.38500351.72875872.02358 455553.1250083.448555360.76000334.19750751.843559721108.37500170.235052406.26000352.07250874.38005 465654.1875085.117526361.63500334.54125754.200039820109.43750171.904023407.13500352.41625876.73652 475155.2500086.786497362.51000334.88500756.556509917110.50000173.572994408.01000352.76000879.09299485456.3125088.455468363.38500335.22875758.9129710016111.56250175.241965408.88500353.10375881.44947495557.3750090.124439364.26000335.57250761.2694410113112.62500176.910936409.76000353.44750883.80594 505458.4375091.793410365.13500335.91625763.6259110210113.68750178.579907410.63500353.79125886.16241 515359.5000093.462381366.01000336.26000765.982381037114.75000180.248878411.51000354.13500888.51888525460.5625095.131353366.88500336.60375768.33885}}
Tube Dimensions by Row 1 0 3 ro w s x 1 2 5 co lu m n s T ubes (D e v e lo p e d                                                                                              (D e ve lo p e d R ow  #       "A "           "B "             "C "           "D "             L e n g th )         R ow        #         "A "             "B "             "C "             "D "           L e n g th )
1  61  6 .3 7 5 0 0 1 0 .0 1 3 8 3 0 3 2 2 .2 6 0 0 0 3 1 9 .0 7 2 5 0  6 4 8 .1 5 8 8 3          53        53  6 1 .6 2 5 0 0  9 6 .8 0 0 3 2 4 3 6 7 .7 6 0 0 0 3 3 6 .9 4 7 5 0  7 7 0 .6 9 5 3 2 2  62  7 .4 3 7 5 0 1 1 .6 8 2 7 9 8 3 2 3 .1 3 5 0 0 3 1 9 .4 1 6 2 5  6 5 0 .5 1 5 3 0          54        52  6 2 .6 8 7 5 0  9 8 .4 6 9 2 9 5 3 6 8 .6 3 5 0 0 3 3 7 .2 9 1 2 5  7 7 3 .0 5 1 7 9 3  63  8 .5 0 0 0 0 1 3 .3 5 1 7 6 9 3 2 4 .0 1 0 0 0 3 1 9 .7 6 0 0 0  6 5 2 .8 7 1 7 7          55        53  6 3 .7 5 0 0 0 1 0 0 .1 3 8 2 6 6 3 6 9 .5 1 0 0 0 3 3 7 .6 3 5 0 0  7 7 5 .4 0 8 2 7 4  62  9 .5 6 2 5 0 1 5 .0 2 0 7 4 0 3 2 4 .8 8 5 0 0 3 2 0 .1 0 3 7 5  6 5 5 .2 2 8 2 4          56        52  6 4 .8 1 2 5 0 1 0 1 .8 0 7 2 3 7 3 7 0 .3 8 5 0 0 3 3 7 .9 7 8 7 5  7 7 7 .7 6 4 7 4 5  63 1 0 .6 2 5 0 0 1 6 .6 8 9 7 1 1 3 2 5 .7 6 0 0 0 3 2 0 .4 4 7 5 0  6 5 7 .5 8 4 7 1          57        51  6 5 .8 7 5 0 0 1 0 3 .4 7 6 2 0 8 3 7 1 .2 6 0 0 0 3 3 8 .3 2 2 5 0  7 8 0 .1 2 1 2 1 6  62 1 1 .6 8 7 5 0 1 8 .3 5 8 6 8 2 3 2 6 .6 3 5 0 0 3 2 0 .7 9 1 2 5  6 5 9 .9 4 1 1 8          58        52  6 6 .9 3 7 5 0 1 0 5 .1 4 5 1 7 9 3 7 2 .1 3 5 0 0 3 3 8 .6 6 6 2 5  7 8 2 .4 7 7 6 8 7  63 1 2 .7 5 0 0 0 2 0 .0 2 7 6 5 3 3 2 7 .5 1 0 0 0 3 2 1 .1 3 5 0 0  6 6 2 .2 9 7 6 5          59        51  6 8 .0 0 0 0 0 1 0 6 .8 1 4 1 5 0 3 7 3 .0 1 0 0 0 3 3 9 .0 1 0 0 0  7 8 4 .8 3 4 1 5 8  62 1 3 .8 1 2 5 0 2 1 .6 9 6 6 2 4 3 2 8 .3 8 5 0 0 3 2 1 .4 7 8 7 5  6 6 4 .6 5 4 1 2          60        50  6 9 .0 6 2 5 0 1 0 8 .4 8 3 1 2 1 3 7 3 .8 8 5 0 0 3 3 9 .3 5 3 7 5  7 8 7 .1 9 0 6 2 9  63 1 4 .8 7 5 0 0 2 3 .3 6 5 5 9 5 3 2 9 .2 6 0 0 0 3 2 1 .8 2 2 5 0  6 6 7 .0 1 0 6 0          61        49  7 0 .1 2 5 0 0 1 1 0 .1 5 2 0 9 2 3 7 4 .7 6 0 0 0 3 3 9 .6 9 7 5 0  7 8 9 .5 4 7 0 9 10  62 1 5 .9 3 7 5 0 2 5 .0 3 4 5 6 6 3 3 0 .1 3 5 0 0 3 2 2 .1 6 6 2 5  6 6 9 .3 6 7 0 7          62        50  7 1 .1 8 7 5 0 1 1 1 .8 2 1 0 6 4 3 7 5 .6 3 5 0 0 3 4 0 .0 4 1 2 5  7 9 1 .9 0 3 5 6 11  63 1 7 .0 0 0 0 0 2 6 .7 0 3 5 3 8 3 3 1 .0 1 0 0 0 3 2 2 .5 1 0 0 0  6 7 1 .7 2 3 5 4          63        49  7 2 .2 5 0 0 0 1 1 3 .4 9 0 0 3 5 3 7 6 .5 1 0 0 0 3 4 0 .3 8 5 0 0  7 9 4 .2 6 0 0 3 12  62 1 8 .0 6 2 5 0 2 8 .3 7 2 5 0 9 3 3 1 .8 8 5 0 0 3 2 2 .8 5 3 7 5  6 7 4 .0 8 0 0 1          64        48  7 3 .3 1 2 5 0 1 1 5 .1 5 9 0 0 6 3 7 7 .3 8 5 0 0 3 4 0 .7 2 8 7 5  7 9 6 .6 1 6 5 1 13  61 1 9 .1 2 5 0 0 3 0 .0 4 1 4 8 0 3 3 2 .7 6 0 0 0 3 2 3 .1 9 7 5 0  6 7 6 .4 3 6 4 8          65        47  7 4 .3 7 5 0 0 1 1 6 .8 2 7 9 7 7 3 7 8 .2 6 0 0 0 3 4 1 .0 7 2 5 0  7 9 8 .9 7 2 9 8 14  62 2 0 .1 8 7 5 0 3 1 .7 1 0 4 5 1 3 3 3 .6 3 5 0 0 3 2 3 .5 4 1 2 5  6 7 8 .7 9 2 9 5          66        48  7 5 .4 3 7 5 0 1 1 8 .4 9 6 9 4 8 3 7 9 .1 3 5 0 0 3 4 1 .4 1 6 2 5  8 0 1 .3 2 9 4 5 15  55 2 1 .2 5 0 0 0 3 3 .3 7 9 4 2 2 3 3 4 .5 1 0 0 0 3 2 3 .8 8 5 0 0  6 8 1 .1 4 9 4 2          67        47  7 6 .5 0 0 0 0 1 2 0 .1 6 5 9 1 9 3 8 0 .0 1 0 0 0 3 4 1 .7 6 0 0 0  8 0 3 .6 8 5 9 2 16  62 2 2 .3 1 2 5 0 3 5 .0 4 8 3 9 3 3 3 5 .3 8 5 0 0 3 2 4 .2 2 8 7 5  6 8 3 .5 0 5 8 9          68        46  7 7 .5 6 2 5 0 1 2 1 .8 3 4 8 9 0 3 8 0 .8 8 5 0 0 3 4 2 .1 0 3 7 5  8 0 6 .0 4 2 3 9 17  61 2 3 .3 7 5 0 0 3 6 .7 1 7 3 6 4 3 3 6 .2 6 0 0 0 3 2 4 .5 7 2 5 0  6 8 5 .8 6 2 3 6          69        45  7 8 .6 2 5 0 0 1 2 3 .5 0 3 8 6 1 3 8 1 .7 6 0 0 0 3 4 2 .4 4 7 5 0  8 0 8 .3 9 8 8 6 18  62 2 4 .4 3 7 5 0 3 8 .3 8 6 3 3 5 3 3 7 .1 3 5 0 0 3 2 4 .9 1 6 2 5  6 8 8 .2 1 8 8 4          70        46  7 9 .6 8 7 5 0 1 2 5 .1 7 2 8 3 2 3 8 2 .6 3 5 0 0 3 4 2 .7 9 1 2 5  8 1 0 .7 5 5 3 3 19  61 2 5 .5 0 0 0 0 4 0 .0 5 5 3 0 6 3 3 8 .0 1 0 0 0 3 2 5 .2 6 0 0 0  6 9 0 .5 7 5 3 1          71        45  8 0 .7 5 0 0 0 1 2 6 .8 4 1 8 0 3 3 8 3 .5 1 0 0 0 3 4 3 .1 3 5 0 0  8 1 3 .1 1 1 8 0 20  62 2 6 .5 6 2 5 0 4 1 .7 2 4 2 7 7 3 3 8 .8 8 5 0 0 3 2 5 .6 0 3 7 5  6 9 2 .9 3 1 7 8          72        44  8 1 .8 1 2 5 0 1 2 8 .5 1 0 7 7 4 3 8 4 .3 8 5 0 0 3 4 3 .4 7 8 7 5  8 1 5 .4 6 8 2 7 21  61 2 7 .6 2 5 0 0 4 3 .3 9 3 2 4 9 3 3 9 .7 6 0 0 0 3 2 5 .9 4 7 5 0  6 9 5 .2 8 8 2 5          73        43  8 2 .8 7 5 0 0 1 3 0 .1 7 9 7 4 6 3 8 5 .2 6 0 0 0 3 4 3 .8 2 2 5 0  8 1 7 .8 2 4 7 5 22  60 2 8 .6 8 7 5 0 4 5 .0 6 2 2 2 0 3 4 0 .6 3 5 0 0 3 2 6 .2 9 1 2 5  6 9 7 .6 4 4 7 2          74        42  8 3 .9 3 7 5 0 1 3 1 .8 4 8 7 1 7 3 8 6 .1 3 5 0 0 3 4 4 .1 6 6 2 5  8 2 0 .1 8 1 2 2 23  61 2 9 .7 5 0 0 0 4 6 .7 3 1 1 9 1 3 4 1 .5 1 0 0 0 3 2 6 .6 3 5 0 0  7 0 0 .0 0 1 1 9          75        43  8 5 .0 0 0 0 0 1 3 3 .5 1 7 6 8 8 3 8 7 .0 1 0 0 0 3 4 4 .5 1 0 0 0  8 2 2 .5 3 7 6 9 24  60 3 0 .8 1 2 5 0 4 8 .4 0 0 1 6 2 3 4 2 .3 8 5 0 0 3 2 6 .9 7 8 7 5  7 0 2 .3 5 7 6 6          76        42  8 6 .0 6 2 5 0 1 3 5 .1 8 6 6 5 9 3 8 7 .8 8 5 0 0 3 4 4 .8 5 3 7 5  8 2 4 .8 9 4 1 6 25  61 3 1 .8 7 5 0 0 5 0 .0 6 9 1 3 3 3 4 3 .2 6 0 0 0 3 2 7 .3 2 2 5 0  7 0 4 .7 1 4 1 3          77        41  8 7 .1 2 5 0 0 1 3 6 .8 5 5 6 3 0 3 8 8 .7 6 0 0 0 3 4 5 .1 9 7 5 0  8 2 7 .2 5 0 6 3 26  60 3 2 .9 3 7 5 0 5 1 .7 3 8 1 0 4 3 4 4 .1 3 5 0 0 3 2 7 .6 6 6 2 5  7 0 7 .0 7 0 6 0          78        40  8 8 .1 8 7 5 0 1 3 8 .5 2 4 6 0 1 3 8 9 .6 3 5 0 0 3 4 5 .5 4 1 2 5  8 2 9 .6 0 7 1 0 27  59 3 4 .0 0 0 0 0 5 3 .4 0 7 0 7 5 3 4 5 .0 1 0 0 0 3 2 8 .0 1 0 0 0  7 0 9 .4 2 7 0 8          79        36  8 9 .2 5 0 0 0 1 4 0 .1 9 3 5 7 2 3 9 0 .5 1 0 0 0 3 4 5 .8 8 5 0 0  8 3 1 .9 6 3 5 7 28  60 3 5 .0 6 2 5 0 5 5 .0 7 6 0 4 6 3 4 5 .8 8 5 0 0 3 2 8 .3 5 3 7 5  7 1 1 .7 8 3 5 5          80        38  9 0 .3 1 2 5 0 1 4 1 .8 6 2 5 4 3 3 9 1 .3 8 5 0 0 3 4 6 .2 2 8 7 5  8 3 4 .3 2 0 0 4 29  59 3 6 .1 2 5 0 0 5 6 .7 4 5 0 1 7 3 4 6 .7 6 0 0 0 3 2 8 .6 9 7 5 0  7 1 4 .1 4 0 0 2          81        39  9 1 .3 7 5 0 0 1 4 3 .5 3 1 5 1 4 3 9 2 .2 6 0 0 0 3 4 6 .5 7 2 5 0  8 3 6 .6 7 6 5 1 30  60 3 7 .1 8 7 5 0 5 8 .4 1 3 9 8 8 3 4 7 .6 3 5 0 0 3 2 9 .0 4 1 2 5  7 1 6 .4 9 6 4 9          82        38  9 2 .4 3 7 5 0 1 4 5 .2 0 0 4 8 5 3 9 3 .1 3 5 0 0 3 4 6 .9 1 6 2 5  8 3 9 .0 3 2 9 9 31  59 3 8 .2 5 0 0 0 6 0 .0 8 2 9 5 9 3 4 8 .5 1 0 0 0 3 2 9 .3 8 5 0 0  7 1 8 .8 5 2 9 6          83        37  9 3 .5 0 0 0 0 1 4 6 .8 6 9 4 5 7 3 9 4 .0 1 0 0 0 3 4 7 .2 6 0 0 0  8 4 1 .3 8 9 4 6 32  58 3 9 .3 1 2 5 0 6 1 .7 5 1 9 3 1 3 4 9 .3 8 5 0 0 3 2 9 .7 2 8 7 5  7 2 1 .2 0 9 4 3          84        36  9 4 .5 6 2 5 0 1 4 8 .5 3 8 4 2 8 3 9 4 .8 8 5 0 0 3 4 7 .6 0 3 7 5  8 4 3 .7 4 5 9 3 33  59 4 0 .3 7 5 0 0 6 3 .4 2 0 9 0 2 3 5 0 .2 6 0 0 0 3 3 0 .0 7 2 5 0  7 2 3 .5 6 5 9 0          85        35  9 5 .6 2 5 0 0 1 5 0 .2 0 7 3 9 9 3 9 5 .7 6 0 0 0 3 4 7 .9 4 7 5 0  8 4 6 .1 0 2 4 0 34  58 4 1 .4 3 7 5 0 6 5 .0 8 9 8 7 3 3 5 1 .1 3 5 0 0 3 3 0 .4 1 6 2 5  7 2 5 .9 2 2 3 7          86        34  9 6 .6 8 7 5 0 1 5 1 .8 7 6 3 7 0 3 9 6 .6 3 5 0 0 3 4 8 .2 9 1 2 5  8 4 8 .4 5 8 8 7 35  59 4 2 .5 0 0 0 0 6 6 .7 5 8 8 4 4 3 5 2 .0 1 0 0 0 3 3 0 .7 6 0 0 0  7 2 8 .2 7 8 8 4          87        33  9 7 .7 5 0 0 0 1 5 3 .5 4 5 3 4 1 3 9 7 .5 1 0 0 0 3 4 8 .6 3 5 0 0  8 5 0 .8 1 5 3 4 36  58 4 3 .5 6 2 5 0 6 8 .4 2 7 8 1 5 3 5 2 .8 8 5 0 0 3 3 1 .1 0 3 7 5  7 3 0 .6 3 5 3 1          88        32  9 8 .8 1 2 5 0 1 5 5 .2 1 4 3 1 2 3 9 8 .3 8 5 0 0 3 4 8 .9 7 8 7 5  8 5 3 .1 7 1 8 1 37  57 4 4 .6 2 5 0 0 7 0 .0 9 6 7 8 6 3 5 3 .7 6 0 0 0 3 3 1 .4 4 7 5 0  7 3 2 .9 9 1 7 9          89        31  9 9 .8 7 5 0 0 1 5 6 .8 8 3 2 8 3 3 9 9 .2 6 0 0 0 3 4 9 .3 2 2 5 0  8 5 5 .5 2 8 2 8 38  58 4 5 .6 8 7 5 0 7 1 .7 6 5 7 5 7 3 5 4 .6 3 5 0 0 3 3 1 .7 9 1 2 5  7 3 5 .3 4 8 2 6          90        30 1 0 0 .9 3 7 5 0 1 5 8 .5 5 2 2 5 4 4 0 0 .1 3 5 0 0 3 4 9 .6 6 6 2 5  8 5 7 .8 8 4 7 5 39  57 4 6 .7 5 0 0 0 7 3 .4 3 4 7 2 8 3 5 5 .5 1 0 0 0 3 3 2 .1 3 5 0 0  7 3 7 .7 0 4 7 3          91        29 1 0 2 .0 0 0 0 0 1 6 0 .2 2 1 2 2 5 4 0 1 .0 1 0 0 0 3 5 0 .0 1 0 0 0  8 6 0 .2 4 1 2 3 40  58 4 7 .8 1 2 5 0 7 5 .1 0 3 6 9 9 3 5 6 .3 8 5 0 0 3 3 2 .4 7 8 7 5  7 4 0 .0 6 1 2 0          92        28 1 0 3 .0 6 2 5 0 1 6 1 .8 9 0 1 9 6 4 0 1 .8 8 5 0 0 3 5 0 .3 5 3 7 5  8 6 2 .5 9 7 7 0 41  57 4 8 .8 7 5 0 0 7 6 .7 7 2 6 7 0 3 5 7 .2 6 0 0 0 3 3 2 .8 2 2 5 0  7 4 2 .4 1 7 6 7          93        27 1 0 4 .1 2 5 0 0 1 6 3 .5 5 9 1 6 8 4 0 2 .7 6 0 0 0 3 5 0 .6 9 7 5 0  8 6 4 .9 5 4 1 7 42  56 4 9 .9 3 7 5 0 7 8 .4 4 1 6 4 2 3 5 8 .1 3 5 0 0 3 3 3 .1 6 6 2 5  7 4 4 .7 7 4 1 4          94        26 1 0 5 .1 8 7 5 0 1 6 5 .2 2 8 1 3 9 4 0 3 .6 3 5 0 0 3 5 1 .0 4 1 2 5  8 6 7 .3 1 0 6 4 43  57 5 1 .0 0 0 0 0 8 0 .1 1 0 6 1 3 3 5 9 .0 1 0 0 0 3 3 3 .5 1 0 0 0  7 4 7 .1 3 0 6 1          95        25 1 0 6 .2 5 0 0 0 1 6 6 .8 9 7 1 1 0 4 0 4 .5 1 0 0 0 3 5 1 .3 8 5 0 0  8 6 9 .6 6 7 1 1 44  56 5 2 .0 6 2 5 0 8 1 .7 7 9 5 8 4 3 5 9 .8 8 5 0 0 3 3 3 .8 5 3 7 5  7 4 9 .4 8 7 0 8          96        22 1 0 7 .3 1 2 5 0 1 6 8 .5 6 6 0 8 1 4 0 5 .3 8 5 0 0 3 5 1 .7 2 8 7 5  8 7 2 .0 2 3 5 8 45  55 5 3 .1 2 5 0 0 8 3 .4 4 8 5 5 5 3 6 0 .7 6 0 0 0 3 3 4 .1 9 7 5 0  7 5 1 .8 4 3 5 5          97        21 1 0 8 .3 7 5 0 0 1 7 0 .2 3 5 0 5 2 4 0 6 .2 6 0 0 0 3 5 2 .0 7 2 5 0  8 7 4 .3 8 0 0 5 46  56 5 4 .1 8 7 5 0 8 5 .1 1 7 5 2 6 3 6 1 .6 3 5 0 0 3 3 4 .5 4 1 2 5  7 5 4 .2 0 0 0 3          98        20 1 0 9 .4 3 7 5 0 1 7 1 .9 0 4 0 2 3 4 0 7 .1 3 5 0 0 3 5 2 .4 1 6 2 5  8 7 6 .7 3 6 5 2 47  51 5 5 .2 5 0 0 0 8 6 .7 8 6 4 9 7 3 6 2 .5 1 0 0 0 3 3 4 .8 8 5 0 0  7 5 6 .5 5 6 5 0          99        17 1 1 0 .5 0 0 0 0 1 7 3 .5 7 2 9 9 4 4 0 8 .0 1 0 0 0 3 5 2 .7 6 0 0 0  8 7 9 .0 9 2 9 9 48  54 5 6 .3 1 2 5 0 8 8 .4 5 5 4 6 8 3 6 3 .3 8 5 0 0 3 3 5 .2 2 8 7 5  7 5 8 .9 1 2 9 7        100        16 1 1 1 .5 6 2 5 0 1 7 5 .2 4 1 9 6 5 4 0 8 .8 8 5 0 0 3 5 3 .1 0 3 7 5  8 8 1 .4 4 9 4 7 49  55 5 7 .3 7 5 0 0 9 0 .1 2 4 4 3 9 3 6 4 .2 6 0 0 0 3 3 5 .5 7 2 5 0  7 6 1 .2 6 9 4 4        101        13 1 1 2 .6 2 5 0 0 1 7 6 .9 1 0 9 3 6 4 0 9 .7 6 0 0 0 3 5 3 .4 4 7 5 0  8 8 3 .8 0 5 9 4 50  54 5 8 .4 3 7 5 0 9 1 .7 9 3 4 1 0 3 6 5 .1 3 5 0 0 3 3 5 .9 1 6 2 5  7 6 3 .6 2 5 9 1        102        10 1 1 3 .6 8 7 5 0 1 7 8 .5 7 9 9 0 7 4 1 0 .6 3 5 0 0 3 5 3 .7 9 1 2 5  8 8 6 .1 6 2 4 1 51  53 5 9 .5 0 0 0 0 9 3 .4 6 2 3 8 1 3 6 6 .0 1 0 0 0 3 3 6 .2 6 0 0 0  7 6 5 .9 8 2 3 8        103          7 1 1 4 .7 5 0 0 0 1 8 0 .2 4 8 8 7 8 4 1 1 .5 1 0 0 0 3 5 4 .1 3 5 0 0  8 8 8 .5 1 8 8 8 52  54 6 0 .5 6 2 5 0 9 5 .1 3 1 3 5 3 3 6 6 .8 8 5 0 0 3 3 6 .6 0 3 7 5  7 6 8 .3 3 8 8 5 E1-11}}

Latest revision as of 23:02, 23 November 2019

Response to Request for Additional Information Regarding Unit 1 Steam Generator (SG) Reports from Cycle 13 Refueling Outage
ML060540483
Person / Time
Site: Sequoyah Tennessee Valley Authority icon.png
Issue date: 02/22/2006
From: Pace P
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
TAC MC8712
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February 22, 2006 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

In the Matter of ) Docket No. 50-327 Tennessee Valley Authority )

SEQUOYAH NUCLEAR PLANT (SQN) - RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING UNIT 1 STEAM GENERATOR (SG)

REPORTS FROM CYCLE 13 REFUELING OUTAGE (TAC NO. MC8712)

Reference:

NRC letter to TVA dated January 13, 2006, Sequoyah Nuclear Plant, Unit 1 - Request for Additional Information Regarding the Cycle 13 Steam Generator Tube Inservice Inspections (TAC No. MC8712)

The enclosure to this letter provides additional information requested by the referenced letter. The additional information includes diagrams that help clarify the design features of the SQN Unit 1 replacement SGs.

Please direct questions concerning this issue to me at (423) 843-7170 or J. D. Smith at (423) 843-6672.

Sincerely, Original signed by James D. Smith for:

P. L. Pace Manager, Site Licensing and Industry Affairs Enclosure cc: See page 2

U.S. Nuclear Regulatory Commission Page 2 February 22, 2006 cc (Enclosure):

Mr. Douglas V. Pickett, Senior Project Manager U.S. Nuclear Regulatory Commission Mail Stop O8G-9a One White Flint North 11555 Rockville Pike Rockville, Maryland 20852-2739 NRC Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy-Daisy, Tennessee 37379-3624 Regional Administrator U.S. Nuclear Regulatory Commission Region II 61 Forsythe St., SW, Suite 23T85 Atlanta, Georgia 30303-3415

ENCLOSURE TENNESSEE VALLEY AUTHORITY (TVA)

SEQUOYAH NUCLEAR PLANT (SQN)

UNIT 1 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING THE CYCLE 13 STEAM GENERATOR TUBE INSERVICE INSPECTIONS NRC Question 1 Your report indicated that 100-percent of the dents and dings greater than or equal to 2-volts between the top of the hot leg tubesheet and the top of the cold leg tubesheet were examined with a +Point' probe. Discuss the results of these

+Point' probe inspections, including the number of dents/dings in each SG. In addition, discuss if there were any new dents/dings or any "anomalous" dent signals.

TVA Response All greater than or equal to 2 volt dents were examined during the Sequoyah (SQN) end of cycle 13 (EOC-13) inservice inspection (ISI) using Plus Point probes and no degradation was identified.

The number of dents identified per SG during the SQN EOC-13 ISI is compared to the number identified during the SQN preservice inspection (PSI) below.

Number of Dents Comparison 90 82 80 70 66 60 Dents >= 2v 50 40 30 25 20 13 15 11 12 10 10 0

SG-1 SG-2 SG-3 SG-4 S1C12 PSI S1C13 E1-1

The total number of dents identified during the EOC-13 ISI was 104 as compared to 130 identified during the SQN PSI.

The differences in the reduction in numbers can be attributed to the following:

1. The screening criterion for identifying dents is 2 volts.

It is expected that with operation of the unit an oxide layer forms causing measured voltages to decrease slightly. Some of the baseline dents that were called near 2 volts are measured less than 2 volts during the ISI, thus not meeting the screening criterion. This could also be attributed to eddy current uncertainties.

2. During the PSI, the rules for the computerized data system (CDS) for identifying dents were discovered to be too conservative inside the tubesheet. On the first two SGs (#3 and #4) when dents were examined with a plus point coil, some of the signals were actually slight geometry variations in the expanded region of the tube.

For the next 2 SGs and for the ISI (#1 and #2), the rules were modified. Thus fewer dents were identified.

Six new DNT indications were identified during the SQN EOC-13 ISI using the greater than or equal to 2 volt screening criterion and are tabulated as follows showing the comparison to the SQN PSI calls:

RSG Row Col Location Cyc13 ISI PSI 1 8 22 VS3+0.72 2.09v 1.94v 1 16 100 DS1+2.30 4.90v (1) 1 16 122 DS1+2.32 4.05v (1) 1 43 7 VS2+1.28 2.00v 1.93v 3 43 43 C02-1.60 2.41v 1.89v 3 43 49 C02-1.60 2.13v 1.98v Note (1):

A look back to PSI shows a geometry anomaly at the bend transition for these two tubes that was interpreted during the ISI (EOC-13) as a dent. The same small signal was recognized during the PSI as an occasional consequence of the tube bending process and not identified as a dent.

This signal is still present and unchanged.

The discussion above shows there were no new indications or anomalous signals identified during the EOC-13 ISI following operation after the baseline PSI.

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NRC Question 2 Please indicate if the 11 wear indications in the area of the 2nd and 4th vertical straps were inspected with bobbin and

+Point' probes. If the wear indications were not inspected with a +Point' probe, please discuss how you concluded that the indications were wear. In addition, the staff noted that several of the wear indications were located in the same general vicinity. Please provide any insights on the pattern of the wear indications.

TVA Response The eleven wear indications in the area of the 2nd and 4th vertical straps were inspected with both bobbin and plus point probes. Wear was confirmed with plus point.

Westinghouse analyzed these wear indications by developing WCAP-16407-P to describe the likely cause and examine the probability of future indications. The results are summarized below.

Cause:

The most likely cause of tube wear was identified as local clearance variations. Vertical strip arrays VS2 and VS4 have no lock-bars so tube to support clearance has the potential for small localized deviations from optimal clearance. For example, when the vertical strips of VS2 and VS4 were welded to the middle arch plates, the strips might have had local deviations in spacing from each other or might have deviated from a vertical orientation due to weld distortion. Either case would result in less than optimal tube to support clearances. It is feasible that a few vertical strips could have slightly larger tube clearances. These larger clearances would result in increased tube vibration amplitudes. While the SQN U1 RSGs upper bundle support (UBS) design provides excellent support against flow induced vibration (FIV), the high circulation ratio, which is beneficial in avoiding tube corrosion phenomena, results in increased fluid forces in the UBS region. In some local regions enlarged tube to support clearances in combination with increased fluid forces might have lead to the mild tube wear indications.

Future Wear Prediction:

Comprehensive wear progression trending data for tube wear at vertical strips was available from operating experience of Reference SGs at a CE plant. The geometry of the UBS is E1-3

similar between the Reference plant and Sequoyah in the local region of interest. Trending demonstrates indication stabilization (i.e., rate slows down as tube to support bearing area increases) and suggests volumetrically linear wear progression. Using SQN U1 RSG Tube Wear Curves of WCAP-16407-P it can be projected that a tube which incurred a 17%

wall penetration in the first cycle, would not reach the ASME Section XI (40%) plugging criteria until sometime during the ninth cycle of operation.

NRC Question 3 Your report provided information about flaws in specific tubes and at specific locations within a tube. In order for the U.S. Nuclear Regulatory Commission staff to better understand where your indications are being detected and for future reference, please provide the following information regarding the design of your replacement SGs: a tubesheet map, a tube support plate diagram, the heat transfer surface area, the tubesheet thickness (with and without the clad),

the lattice grid thickness, the tube support plate thickness, and a description of the U-bend support system, including the thickness and the tubing supported by the various supports.

In addition, discuss whether you have a flow distribution baffle to distribute flow at the top of the tubesheet, including the thickness.

TVA Response Steam Generator Design:

There is no flow distribution baffle in the SQN U1 Replacement SG design.

Sequoyah Unit 1 is a Westinghouse PWR with 4 steam generators. These are replacements for the previous Westinghouse Model 51 steam generators. Each steam generator contains 4983 U-bend tubes made of thermally treated Inconel 690. The generators are designated as Model 57AG. This comes from approximately 57,000 square feet of surface area (57) and an Advanced Grid design for the tube supports, hence 57AG. The tubes are 0.750 in diameter with a nominal wall thickness of 0.043. All support structures are 409SS.

Various descriptions and drawings follow.

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Sequoyah Unit 1 Tubesheet The tube sheet, as shown above, is a triangular pitch design with tubes designated by row and column. There are 103 rows and 125 columns in each leg of the four steam generators.

The tubes are expanded full length of the tube sheet using a hydraulic expansion process. There are 13 blank spaces in each tubesheet for stay rods. The locations of these blanks are as follows:

Stay rod tube numbers 79-39 79-63 79-87 47-27 47-51 47-75 47-99 15-15 15-33 15-51 15-75 15-93 15-111 Location of Stay Rods The Advanced Tube Support Grid (ATSG) structures are 409 stainless steel which is a ferritic stainless. Tubes will be even numbered row - even numbered column or odd numbered row

- odd numbered column. Support structure measurements are provided in the following table while figures following illustrate a cross sectional view of the steam generator support structures and specific support nomenclature.

Additional tables list all dimensional and design specifics relative to the support structures within the Sequoyah steam generators and give the u-bend support structures through E1-5

which the various tubes pass. In addition, lists of tube dimensions by row with respect tostraight and curved sections are provided. Finally, figures show drawings of the supports and Ventilated Support Bars (VSB). The tubes through and including row 16 were heat treated the entire length.

Sequoyah Support Structure Measurements Location Inches from TE Center to Center Tube End 0.0 Top of Tubesheet 25.25 25.25 Center #1 TSP 45.25 20.0 Center #2 TSP 89.22 43.97 Center #3 TSP 133.19 43.97 Center #4 TSP 177.16 43.97 Center #5 TSP 221.13 43.97 Center #6 TSP 265.10 43.97 Center #7 TSP 309.07 43.97 Model 57AG E1-6

SEQUOYAH 1 DESIGN SPECIFICS Tube-sheet Data:

Hole diameter - 0.758 Pitch - 1.0625 Thickness - 25.25 (includes 0.25 clad)

Expansion process - Hydraulic (full expansion)

Tube Support Data:

Hole geometry - Lattice Grid Lattice dimensions - 0.765 minimum tube clearance Width x thickness - 2.00 & 1.00 x 0.145 (thick portion)

Material - 409 SS Ventilated Support Bar Data:

Lock Bar Shape - rectangular Width x thickness - 0.5 x 0.09 Straps Shape - rectangular Width x thickness - 2.0 x 0.16 Material - 409 SS Tube Data:

OD - 0.750 ID - 0.664 Wall thickness:

Nominal - 0.043 Number of tubes/SG - 4983 U-bend radius:

Maximum - 57.375 Minimum - 3.188 E1-7

Rows Structures Through Which the Tubes Pass 1-36 DS1 VS3 DS2 37-75 DS1 VS2 VS3 VS4 DS2 76-103 DS1 VS1 VS2 VS3 VS4 VS5 DS2 U-Bend Support Intersections ATSG Lattice E1-8

ATSG Top View ATSG E1-9

U-Bend Support Strap Ventilated Support Bar (VSB)

Bend Support Structures Ventilated Support Bars (VSB)

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Tube Dimensions by Row 1 0 3 ro w s x 1 2 5 co lu m n s T ubes (D e v e lo p e d (D e ve lo p e d R ow # "A " "B " "C " "D " L e n g th ) R ow # "A " "B " "C " "D " L e n g th )

1 61 6 .3 7 5 0 0 1 0 .0 1 3 8 3 0 3 2 2 .2 6 0 0 0 3 1 9 .0 7 2 5 0 6 4 8 .1 5 8 8 3 53 53 6 1 .6 2 5 0 0 9 6 .8 0 0 3 2 4 3 6 7 .7 6 0 0 0 3 3 6 .9 4 7 5 0 7 7 0 .6 9 5 3 2 2 62 7 .4 3 7 5 0 1 1 .6 8 2 7 9 8 3 2 3 .1 3 5 0 0 3 1 9 .4 1 6 2 5 6 5 0 .5 1 5 3 0 54 52 6 2 .6 8 7 5 0 9 8 .4 6 9 2 9 5 3 6 8 .6 3 5 0 0 3 3 7 .2 9 1 2 5 7 7 3 .0 5 1 7 9 3 63 8 .5 0 0 0 0 1 3 .3 5 1 7 6 9 3 2 4 .0 1 0 0 0 3 1 9 .7 6 0 0 0 6 5 2 .8 7 1 7 7 55 53 6 3 .7 5 0 0 0 1 0 0 .1 3 8 2 6 6 3 6 9 .5 1 0 0 0 3 3 7 .6 3 5 0 0 7 7 5 .4 0 8 2 7 4 62 9 .5 6 2 5 0 1 5 .0 2 0 7 4 0 3 2 4 .8 8 5 0 0 3 2 0 .1 0 3 7 5 6 5 5 .2 2 8 2 4 56 52 6 4 .8 1 2 5 0 1 0 1 .8 0 7 2 3 7 3 7 0 .3 8 5 0 0 3 3 7 .9 7 8 7 5 7 7 7 .7 6 4 7 4 5 63 1 0 .6 2 5 0 0 1 6 .6 8 9 7 1 1 3 2 5 .7 6 0 0 0 3 2 0 .4 4 7 5 0 6 5 7 .5 8 4 7 1 57 51 6 5 .8 7 5 0 0 1 0 3 .4 7 6 2 0 8 3 7 1 .2 6 0 0 0 3 3 8 .3 2 2 5 0 7 8 0 .1 2 1 2 1 6 62 1 1 .6 8 7 5 0 1 8 .3 5 8 6 8 2 3 2 6 .6 3 5 0 0 3 2 0 .7 9 1 2 5 6 5 9 .9 4 1 1 8 58 52 6 6 .9 3 7 5 0 1 0 5 .1 4 5 1 7 9 3 7 2 .1 3 5 0 0 3 3 8 .6 6 6 2 5 7 8 2 .4 7 7 6 8 7 63 1 2 .7 5 0 0 0 2 0 .0 2 7 6 5 3 3 2 7 .5 1 0 0 0 3 2 1 .1 3 5 0 0 6 6 2 .2 9 7 6 5 59 51 6 8 .0 0 0 0 0 1 0 6 .8 1 4 1 5 0 3 7 3 .0 1 0 0 0 3 3 9 .0 1 0 0 0 7 8 4 .8 3 4 1 5 8 62 1 3 .8 1 2 5 0 2 1 .6 9 6 6 2 4 3 2 8 .3 8 5 0 0 3 2 1 .4 7 8 7 5 6 6 4 .6 5 4 1 2 60 50 6 9 .0 6 2 5 0 1 0 8 .4 8 3 1 2 1 3 7 3 .8 8 5 0 0 3 3 9 .3 5 3 7 5 7 8 7 .1 9 0 6 2 9 63 1 4 .8 7 5 0 0 2 3 .3 6 5 5 9 5 3 2 9 .2 6 0 0 0 3 2 1 .8 2 2 5 0 6 6 7 .0 1 0 6 0 61 49 7 0 .1 2 5 0 0 1 1 0 .1 5 2 0 9 2 3 7 4 .7 6 0 0 0 3 3 9 .6 9 7 5 0 7 8 9 .5 4 7 0 9 10 62 1 5 .9 3 7 5 0 2 5 .0 3 4 5 6 6 3 3 0 .1 3 5 0 0 3 2 2 .1 6 6 2 5 6 6 9 .3 6 7 0 7 62 50 7 1 .1 8 7 5 0 1 1 1 .8 2 1 0 6 4 3 7 5 .6 3 5 0 0 3 4 0 .0 4 1 2 5 7 9 1 .9 0 3 5 6 11 63 1 7 .0 0 0 0 0 2 6 .7 0 3 5 3 8 3 3 1 .0 1 0 0 0 3 2 2 .5 1 0 0 0 6 7 1 .7 2 3 5 4 63 49 7 2 .2 5 0 0 0 1 1 3 .4 9 0 0 3 5 3 7 6 .5 1 0 0 0 3 4 0 .3 8 5 0 0 7 9 4 .2 6 0 0 3 12 62 1 8 .0 6 2 5 0 2 8 .3 7 2 5 0 9 3 3 1 .8 8 5 0 0 3 2 2 .8 5 3 7 5 6 7 4 .0 8 0 0 1 64 48 7 3 .3 1 2 5 0 1 1 5 .1 5 9 0 0 6 3 7 7 .3 8 5 0 0 3 4 0 .7 2 8 7 5 7 9 6 .6 1 6 5 1 13 61 1 9 .1 2 5 0 0 3 0 .0 4 1 4 8 0 3 3 2 .7 6 0 0 0 3 2 3 .1 9 7 5 0 6 7 6 .4 3 6 4 8 65 47 7 4 .3 7 5 0 0 1 1 6 .8 2 7 9 7 7 3 7 8 .2 6 0 0 0 3 4 1 .0 7 2 5 0 7 9 8 .9 7 2 9 8 14 62 2 0 .1 8 7 5 0 3 1 .7 1 0 4 5 1 3 3 3 .6 3 5 0 0 3 2 3 .5 4 1 2 5 6 7 8 .7 9 2 9 5 66 48 7 5 .4 3 7 5 0 1 1 8 .4 9 6 9 4 8 3 7 9 .1 3 5 0 0 3 4 1 .4 1 6 2 5 8 0 1 .3 2 9 4 5 15 55 2 1 .2 5 0 0 0 3 3 .3 7 9 4 2 2 3 3 4 .5 1 0 0 0 3 2 3 .8 8 5 0 0 6 8 1 .1 4 9 4 2 67 47 7 6 .5 0 0 0 0 1 2 0 .1 6 5 9 1 9 3 8 0 .0 1 0 0 0 3 4 1 .7 6 0 0 0 8 0 3 .6 8 5 9 2 16 62 2 2 .3 1 2 5 0 3 5 .0 4 8 3 9 3 3 3 5 .3 8 5 0 0 3 2 4 .2 2 8 7 5 6 8 3 .5 0 5 8 9 68 46 7 7 .5 6 2 5 0 1 2 1 .8 3 4 8 9 0 3 8 0 .8 8 5 0 0 3 4 2 .1 0 3 7 5 8 0 6 .0 4 2 3 9 17 61 2 3 .3 7 5 0 0 3 6 .7 1 7 3 6 4 3 3 6 .2 6 0 0 0 3 2 4 .5 7 2 5 0 6 8 5 .8 6 2 3 6 69 45 7 8 .6 2 5 0 0 1 2 3 .5 0 3 8 6 1 3 8 1 .7 6 0 0 0 3 4 2 .4 4 7 5 0 8 0 8 .3 9 8 8 6 18 62 2 4 .4 3 7 5 0 3 8 .3 8 6 3 3 5 3 3 7 .1 3 5 0 0 3 2 4 .9 1 6 2 5 6 8 8 .2 1 8 8 4 70 46 7 9 .6 8 7 5 0 1 2 5 .1 7 2 8 3 2 3 8 2 .6 3 5 0 0 3 4 2 .7 9 1 2 5 8 1 0 .7 5 5 3 3 19 61 2 5 .5 0 0 0 0 4 0 .0 5 5 3 0 6 3 3 8 .0 1 0 0 0 3 2 5 .2 6 0 0 0 6 9 0 .5 7 5 3 1 71 45 8 0 .7 5 0 0 0 1 2 6 .8 4 1 8 0 3 3 8 3 .5 1 0 0 0 3 4 3 .1 3 5 0 0 8 1 3 .1 1 1 8 0 20 62 2 6 .5 6 2 5 0 4 1 .7 2 4 2 7 7 3 3 8 .8 8 5 0 0 3 2 5 .6 0 3 7 5 6 9 2 .9 3 1 7 8 72 44 8 1 .8 1 2 5 0 1 2 8 .5 1 0 7 7 4 3 8 4 .3 8 5 0 0 3 4 3 .4 7 8 7 5 8 1 5 .4 6 8 2 7 21 61 2 7 .6 2 5 0 0 4 3 .3 9 3 2 4 9 3 3 9 .7 6 0 0 0 3 2 5 .9 4 7 5 0 6 9 5 .2 8 8 2 5 73 43 8 2 .8 7 5 0 0 1 3 0 .1 7 9 7 4 6 3 8 5 .2 6 0 0 0 3 4 3 .8 2 2 5 0 8 1 7 .8 2 4 7 5 22 60 2 8 .6 8 7 5 0 4 5 .0 6 2 2 2 0 3 4 0 .6 3 5 0 0 3 2 6 .2 9 1 2 5 6 9 7 .6 4 4 7 2 74 42 8 3 .9 3 7 5 0 1 3 1 .8 4 8 7 1 7 3 8 6 .1 3 5 0 0 3 4 4 .1 6 6 2 5 8 2 0 .1 8 1 2 2 23 61 2 9 .7 5 0 0 0 4 6 .7 3 1 1 9 1 3 4 1 .5 1 0 0 0 3 2 6 .6 3 5 0 0 7 0 0 .0 0 1 1 9 75 43 8 5 .0 0 0 0 0 1 3 3 .5 1 7 6 8 8 3 8 7 .0 1 0 0 0 3 4 4 .5 1 0 0 0 8 2 2 .5 3 7 6 9 24 60 3 0 .8 1 2 5 0 4 8 .4 0 0 1 6 2 3 4 2 .3 8 5 0 0 3 2 6 .9 7 8 7 5 7 0 2 .3 5 7 6 6 76 42 8 6 .0 6 2 5 0 1 3 5 .1 8 6 6 5 9 3 8 7 .8 8 5 0 0 3 4 4 .8 5 3 7 5 8 2 4 .8 9 4 1 6 25 61 3 1 .8 7 5 0 0 5 0 .0 6 9 1 3 3 3 4 3 .2 6 0 0 0 3 2 7 .3 2 2 5 0 7 0 4 .7 1 4 1 3 77 41 8 7 .1 2 5 0 0 1 3 6 .8 5 5 6 3 0 3 8 8 .7 6 0 0 0 3 4 5 .1 9 7 5 0 8 2 7 .2 5 0 6 3 26 60 3 2 .9 3 7 5 0 5 1 .7 3 8 1 0 4 3 4 4 .1 3 5 0 0 3 2 7 .6 6 6 2 5 7 0 7 .0 7 0 6 0 78 40 8 8 .1 8 7 5 0 1 3 8 .5 2 4 6 0 1 3 8 9 .6 3 5 0 0 3 4 5 .5 4 1 2 5 8 2 9 .6 0 7 1 0 27 59 3 4 .0 0 0 0 0 5 3 .4 0 7 0 7 5 3 4 5 .0 1 0 0 0 3 2 8 .0 1 0 0 0 7 0 9 .4 2 7 0 8 79 36 8 9 .2 5 0 0 0 1 4 0 .1 9 3 5 7 2 3 9 0 .5 1 0 0 0 3 4 5 .8 8 5 0 0 8 3 1 .9 6 3 5 7 28 60 3 5 .0 6 2 5 0 5 5 .0 7 6 0 4 6 3 4 5 .8 8 5 0 0 3 2 8 .3 5 3 7 5 7 1 1 .7 8 3 5 5 80 38 9 0 .3 1 2 5 0 1 4 1 .8 6 2 5 4 3 3 9 1 .3 8 5 0 0 3 4 6 .2 2 8 7 5 8 3 4 .3 2 0 0 4 29 59 3 6 .1 2 5 0 0 5 6 .7 4 5 0 1 7 3 4 6 .7 6 0 0 0 3 2 8 .6 9 7 5 0 7 1 4 .1 4 0 0 2 81 39 9 1 .3 7 5 0 0 1 4 3 .5 3 1 5 1 4 3 9 2 .2 6 0 0 0 3 4 6 .5 7 2 5 0 8 3 6 .6 7 6 5 1 30 60 3 7 .1 8 7 5 0 5 8 .4 1 3 9 8 8 3 4 7 .6 3 5 0 0 3 2 9 .0 4 1 2 5 7 1 6 .4 9 6 4 9 82 38 9 2 .4 3 7 5 0 1 4 5 .2 0 0 4 8 5 3 9 3 .1 3 5 0 0 3 4 6 .9 1 6 2 5 8 3 9 .0 3 2 9 9 31 59 3 8 .2 5 0 0 0 6 0 .0 8 2 9 5 9 3 4 8 .5 1 0 0 0 3 2 9 .3 8 5 0 0 7 1 8 .8 5 2 9 6 83 37 9 3 .5 0 0 0 0 1 4 6 .8 6 9 4 5 7 3 9 4 .0 1 0 0 0 3 4 7 .2 6 0 0 0 8 4 1 .3 8 9 4 6 32 58 3 9 .3 1 2 5 0 6 1 .7 5 1 9 3 1 3 4 9 .3 8 5 0 0 3 2 9 .7 2 8 7 5 7 2 1 .2 0 9 4 3 84 36 9 4 .5 6 2 5 0 1 4 8 .5 3 8 4 2 8 3 9 4 .8 8 5 0 0 3 4 7 .6 0 3 7 5 8 4 3 .7 4 5 9 3 33 59 4 0 .3 7 5 0 0 6 3 .4 2 0 9 0 2 3 5 0 .2 6 0 0 0 3 3 0 .0 7 2 5 0 7 2 3 .5 6 5 9 0 85 35 9 5 .6 2 5 0 0 1 5 0 .2 0 7 3 9 9 3 9 5 .7 6 0 0 0 3 4 7 .9 4 7 5 0 8 4 6 .1 0 2 4 0 34 58 4 1 .4 3 7 5 0 6 5 .0 8 9 8 7 3 3 5 1 .1 3 5 0 0 3 3 0 .4 1 6 2 5 7 2 5 .9 2 2 3 7 86 34 9 6 .6 8 7 5 0 1 5 1 .8 7 6 3 7 0 3 9 6 .6 3 5 0 0 3 4 8 .2 9 1 2 5 8 4 8 .4 5 8 8 7 35 59 4 2 .5 0 0 0 0 6 6 .7 5 8 8 4 4 3 5 2 .0 1 0 0 0 3 3 0 .7 6 0 0 0 7 2 8 .2 7 8 8 4 87 33 9 7 .7 5 0 0 0 1 5 3 .5 4 5 3 4 1 3 9 7 .5 1 0 0 0 3 4 8 .6 3 5 0 0 8 5 0 .8 1 5 3 4 36 58 4 3 .5 6 2 5 0 6 8 .4 2 7 8 1 5 3 5 2 .8 8 5 0 0 3 3 1 .1 0 3 7 5 7 3 0 .6 3 5 3 1 88 32 9 8 .8 1 2 5 0 1 5 5 .2 1 4 3 1 2 3 9 8 .3 8 5 0 0 3 4 8 .9 7 8 7 5 8 5 3 .1 7 1 8 1 37 57 4 4 .6 2 5 0 0 7 0 .0 9 6 7 8 6 3 5 3 .7 6 0 0 0 3 3 1 .4 4 7 5 0 7 3 2 .9 9 1 7 9 89 31 9 9 .8 7 5 0 0 1 5 6 .8 8 3 2 8 3 3 9 9 .2 6 0 0 0 3 4 9 .3 2 2 5 0 8 5 5 .5 2 8 2 8 38 58 4 5 .6 8 7 5 0 7 1 .7 6 5 7 5 7 3 5 4 .6 3 5 0 0 3 3 1 .7 9 1 2 5 7 3 5 .3 4 8 2 6 90 30 1 0 0 .9 3 7 5 0 1 5 8 .5 5 2 2 5 4 4 0 0 .1 3 5 0 0 3 4 9 .6 6 6 2 5 8 5 7 .8 8 4 7 5 39 57 4 6 .7 5 0 0 0 7 3 .4 3 4 7 2 8 3 5 5 .5 1 0 0 0 3 3 2 .1 3 5 0 0 7 3 7 .7 0 4 7 3 91 29 1 0 2 .0 0 0 0 0 1 6 0 .2 2 1 2 2 5 4 0 1 .0 1 0 0 0 3 5 0 .0 1 0 0 0 8 6 0 .2 4 1 2 3 40 58 4 7 .8 1 2 5 0 7 5 .1 0 3 6 9 9 3 5 6 .3 8 5 0 0 3 3 2 .4 7 8 7 5 7 4 0 .0 6 1 2 0 92 28 1 0 3 .0 6 2 5 0 1 6 1 .8 9 0 1 9 6 4 0 1 .8 8 5 0 0 3 5 0 .3 5 3 7 5 8 6 2 .5 9 7 7 0 41 57 4 8 .8 7 5 0 0 7 6 .7 7 2 6 7 0 3 5 7 .2 6 0 0 0 3 3 2 .8 2 2 5 0 7 4 2 .4 1 7 6 7 93 27 1 0 4 .1 2 5 0 0 1 6 3 .5 5 9 1 6 8 4 0 2 .7 6 0 0 0 3 5 0 .6 9 7 5 0 8 6 4 .9 5 4 1 7 42 56 4 9 .9 3 7 5 0 7 8 .4 4 1 6 4 2 3 5 8 .1 3 5 0 0 3 3 3 .1 6 6 2 5 7 4 4 .7 7 4 1 4 94 26 1 0 5 .1 8 7 5 0 1 6 5 .2 2 8 1 3 9 4 0 3 .6 3 5 0 0 3 5 1 .0 4 1 2 5 8 6 7 .3 1 0 6 4 43 57 5 1 .0 0 0 0 0 8 0 .1 1 0 6 1 3 3 5 9 .0 1 0 0 0 3 3 3 .5 1 0 0 0 7 4 7 .1 3 0 6 1 95 25 1 0 6 .2 5 0 0 0 1 6 6 .8 9 7 1 1 0 4 0 4 .5 1 0 0 0 3 5 1 .3 8 5 0 0 8 6 9 .6 6 7 1 1 44 56 5 2 .0 6 2 5 0 8 1 .7 7 9 5 8 4 3 5 9 .8 8 5 0 0 3 3 3 .8 5 3 7 5 7 4 9 .4 8 7 0 8 96 22 1 0 7 .3 1 2 5 0 1 6 8 .5 6 6 0 8 1 4 0 5 .3 8 5 0 0 3 5 1 .7 2 8 7 5 8 7 2 .0 2 3 5 8 45 55 5 3 .1 2 5 0 0 8 3 .4 4 8 5 5 5 3 6 0 .7 6 0 0 0 3 3 4 .1 9 7 5 0 7 5 1 .8 4 3 5 5 97 21 1 0 8 .3 7 5 0 0 1 7 0 .2 3 5 0 5 2 4 0 6 .2 6 0 0 0 3 5 2 .0 7 2 5 0 8 7 4 .3 8 0 0 5 46 56 5 4 .1 8 7 5 0 8 5 .1 1 7 5 2 6 3 6 1 .6 3 5 0 0 3 3 4 .5 4 1 2 5 7 5 4 .2 0 0 0 3 98 20 1 0 9 .4 3 7 5 0 1 7 1 .9 0 4 0 2 3 4 0 7 .1 3 5 0 0 3 5 2 .4 1 6 2 5 8 7 6 .7 3 6 5 2 47 51 5 5 .2 5 0 0 0 8 6 .7 8 6 4 9 7 3 6 2 .5 1 0 0 0 3 3 4 .8 8 5 0 0 7 5 6 .5 5 6 5 0 99 17 1 1 0 .5 0 0 0 0 1 7 3 .5 7 2 9 9 4 4 0 8 .0 1 0 0 0 3 5 2 .7 6 0 0 0 8 7 9 .0 9 2 9 9 48 54 5 6 .3 1 2 5 0 8 8 .4 5 5 4 6 8 3 6 3 .3 8 5 0 0 3 3 5 .2 2 8 7 5 7 5 8 .9 1 2 9 7 100 16 1 1 1 .5 6 2 5 0 1 7 5 .2 4 1 9 6 5 4 0 8 .8 8 5 0 0 3 5 3 .1 0 3 7 5 8 8 1 .4 4 9 4 7 49 55 5 7 .3 7 5 0 0 9 0 .1 2 4 4 3 9 3 6 4 .2 6 0 0 0 3 3 5 .5 7 2 5 0 7 6 1 .2 6 9 4 4 101 13 1 1 2 .6 2 5 0 0 1 7 6 .9 1 0 9 3 6 4 0 9 .7 6 0 0 0 3 5 3 .4 4 7 5 0 8 8 3 .8 0 5 9 4 50 54 5 8 .4 3 7 5 0 9 1 .7 9 3 4 1 0 3 6 5 .1 3 5 0 0 3 3 5 .9 1 6 2 5 7 6 3 .6 2 5 9 1 102 10 1 1 3 .6 8 7 5 0 1 7 8 .5 7 9 9 0 7 4 1 0 .6 3 5 0 0 3 5 3 .7 9 1 2 5 8 8 6 .1 6 2 4 1 51 53 5 9 .5 0 0 0 0 9 3 .4 6 2 3 8 1 3 6 6 .0 1 0 0 0 3 3 6 .2 6 0 0 0 7 6 5 .9 8 2 3 8 103 7 1 1 4 .7 5 0 0 0 1 8 0 .2 4 8 8 7 8 4 1 1 .5 1 0 0 0 3 5 4 .1 3 5 0 0 8 8 8 .5 1 8 8 8 52 54 6 0 .5 6 2 5 0 9 5 .1 3 1 3 5 3 3 6 6 .8 8 5 0 0 3 3 6 .6 0 3 7 5 7 6 8 .3 3 8 8 5 E1-11

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