attachvt a ansvers to questions concerning: loose … · attachvt a ansvers to questions...
TRANSCRIPT
ATTACHVT A
ANSVERS TO QUESTIONS CONCERNING:
LOOSE PARTS MNITORING PROGRAM AND
CYCLE 2 STARnT PHYSICS TESTS
Indian Point Unit No. 2
Docket No. 50-247
March 9, 1977
8111230432 770309> PDR ADOCK 05000247 ... PDR'
Q. What is thQArerage rate of occurrence* impacting for l-,2-,3-, and 4-pump operation?
A. The average rate of occurence of impacts based on
operating pumps is as follows:
With one pump operating the average rate of impacts
was 1.4 impacts per second during a sampling time
of 28 seconds.
With two pumps operating the average rate of
impacts was 0.7 impacts per second during a sampling
time of 27 seconds.
With three pumps operating the average rate of
impacts was 0.4 impacts per second during a sampling
time of 45 seconds.
With 4 pumps operating no impacts were noted at
any time.
2. Q. Can you rule out flow-induced vibration and impacting of core internals. i.e., core barrel impacting of keyways, loose thermal shield, etc.? Present evidence available to us would support such an hypothesis.
A. Analysis of the data recorded from four accelerometers
mounted on the bottom of the Indian Point #2
vessel, using triangulation techniques, located
the source in the bottom of the vessel. Thus flow
induced core barrel impacting on the vessel edge
can be ruled out. The source of impacts was also
found to be moving in a random manner indicating
that it was a moving object.
-2
3. Q. Have you Osured core barrel motion* various power levels using excore neutron noise? If so, what scale factor was used and how much motion was indicated both before and after refueling? What is the nominal clearance between care barrel and keyway .at the bottom of the vessel?
A. Neutron noise from the excore power range
detectors was recorded during cycle 1 at various
power levels and during cycle II at 70% and 100%
of full power to evaluate gross core barrel signature
characteristics. This technique is not a direct
method to measure the isolated core barrel motion
regardless of the scale factor used. This is because
the neutron noise signature contains indications
of many types of motion existing in the reactor
coolant system (core barrel, thermal shield, pump
vibrationetQ). All the neutron noise measurements
showed no unusual patterns in the amplitude or
signature from cycle 1 to cycle 2.
The nominal as assembled clearance between the
core barrel and keyway is 6 mils.
4. Q. Have you attempted to time correlate large excursions of excore neutron detector signals with the accelerometer signals indicating impacting? If so, what was the result?
A'. No abnormal or large excursions of excore
neutron detector signals were measured in cycle I or
cycle II neutron noise data recordings. Therefore, no
attemps have been made to correlate neutron noise with
accelerometers located on the bottom of the vessel, since
no impact signals were detected during normal power
operation with four pumps running.
-3
5. Q. What is the reproducibility of the impact signal? For example, after operating with four pumps and no impacting, when the flow is reduced to 1',2-,3pump operations is the location and amplitude of impacting the same?
A. The amplitude of the impact signals are generally
reproducible with pump startups. Location of the
impacting indication moved as described in the answer
to question 2.
No data is available, for the sequence when the
flow is reduced to 3-,2-,l- pump operation after
a four pump operation condition.
6. Q. How does background noise change when 2, 3, 4 pumps are operated? Could the background noise mask the impacting signal at 4-pump operation?
A. The background noise levels change with different
pump configurations in the following manner:
With one pump operating the background noise
level is the highest. This is probably due to the
turbulence of reactor coolant.
Using one pump noise as a base, the effects
of multiple pump operation are expressed as factors
of the base background noise.
(1) Two-pump operation - the background noise
reduced to 0.8 of the base.
(2) Three pump operation further reduces the
background to 0.7 of the base.
(3) Four pump operation reduces the background
noise level to 0.7 of the base.
Observed data indicates that for the impacts to be
masked by background noise during 4 pump operation, the
impacts would have to be very small.
c7. Q. What is tvapproximate impacting si*l-to
background noise ratio?
A. The average impact signal to noise ratio
'for 1,2, and 3 pump operation is:
1 pump -2.5 to 1
2 pumps 4.5 tol1
3 pumps 3.8 to1 .8. .. Q. Could the filtering that is applied to the raw
accelerometer signals change the audible sound of loose part impacting? Is filtering done on audible signal? What is the pass band?
A. The accelerometer output is fed to a remote
charge pre-amplifier that has a ± 2% frequency
response from 0.2HZ to 50KHZ. The output of the
charge pre-amplifier is fed to a signal conditioner
amplifier whose frequency response is + 2% from
10HZ to 20KHZ. Signals for all tape recordings
were taken from the output of the signal conditioners.
This conditioned signal is inputted to an
audio amplifier whose total harmonic distortion is
less than 0.5% from 100HZ to 20KHZ. A filter
is provided for the audio amplifier. This filter
has a nominal band pass of 2KHZ, over a range of 1
to 20 KHZ. A switch is provided to use the filter
or to by-pass it in the audio amplifier circuit.
If the filter were used, it could, depending upon
the filter setting and the predominant frequency
of the impact, change the audible sound of loose
part impacting. However, this filter was not used
while audibly monitoring the impacts, and thus had
no effect upon the audible signal.
9. Q. Explain tther the last statement oparagraph 4 in your response to question 1 on November 29. "The fact that at full temperature, impacts were noted during pump transients and none during normal full flow operation indicated that the source was not wedged anywhere and it remained stationary under normal operations."
A. As explained in the answer to question 1
the indications of impacting were noted only when
three or fewer pumps were operating. During these
operating conditions, movement of the impact
source was also detected. When four pumps were
operating, no impacting was detected. The inpacting
would start again when the system was next operated
with one or more pumps removed from service.
These results indicated that the normal flow patterns
with all reactor coolant pumps operating was
sufficient to maintain the "loose part" stationary.
Apparently, however, the source was not wedged in
place, because impacting indications resumed when the system
was later operated with less than full four pump flow.
10. Q. Provide axial power distributions for Map 1 through 8. These axial distributions should include traces from locations B-3, D-3, and B-13, plus at least two traces from Regions 2,3, and 4. The same locations should be chosen for each of the eight maps.
A. Axial power distributions for Map 1 through 8 are
provided in Figures 1 through 8 respectively. They
include nine core locations, namely: R-8 and N-2 from
Region 4, L-13 and K-6 from Region 2, G-9 and F-7 from
Region 3 and the specifically requested core locations
D-3, B-13 and B-3. The distributions are in KW/FT and
are normalized to 100% rated power (2758 MWt).
-6
Axial Power Distribution (KW/FT)
Figure 1
Map 1: HZP (normalized to 2758 4MWt)
Core Locations
Top
of
Core
0
0
a .4
Bottom
of Core
,s I *59
S 2 057
3 4
.5 7
3 2 153
j) 7. 7i
.1_+. 7. I .
5. b4 1 7 .5533
13+ 3 ..59.
1_ 7 45 3) 7. L -1 + .5
31 s.3
'3 _
35 ._ . 73
27 7
'3 3
57 7. i
31. .3._3).
4 __
-5 915 9 . 4.7-i) _35_ . _A 4 7_
3L 3 .3 -. 9--3y
-5 53 2 937 5_. ..... . ..
A3 .. 3.. t ) _. . 7 _
.1 _ _ ,. . _
m
_ ] .. 7A' 3
3 5.
7
6 5.) __5.53
..... 5 . 5
___.. * 3 ..
5 . 55
...65.5?
...5.553 6. 53
4., .- , 35 54. . 5?
__5 .7 15
5.597
3 5
3.755
6459
34 .4.5
-2 _4. 5_
5.535
2_. 57
5.7-5
1 .325
3.335
2.139
*.599
3 .31?
2.139
L 3;
3 .36 5.353
5_..] ..
7 .7 35 7.5 5
9.1 33 5.7 3
r .15 8 19.1 5_
___.15 51
2.37
9.595
7 .3 57
...9.358_
7 .3 3L9
9.151
6.)5 3
6. )S3
7.3 7-1
7.397_ __7I.-' 6 3_.
7.35
4.3520
6.15
. .552
6 .,30
5.77? 3__. 7.1._ _5.2.55
_... 3 6.5..__
3.595
.... 3 . 5
3.75_3.2 35
3.766 3.592
_3.24 5_
__2 .7 33..
2.551
2-13.9.. 1.738 •_.. .7 O_ __.355
.?30
3.729 i _4. ? 9_I 4.911 5.399
7.235
7.21 7,
S.33
__5 -9 2
_. .55
5.33?
3.355
7.3.
7. 2?) 7.95'
_5.75 4_
5 .0,g3
3.857.1
5.9755
3.53 2 2 .?79
_-235
4.95t
3.901
3 .785
3.519
3.1i 7_
3 .935
_.370 .?..5 2 9
1.939
1 .785
_. -.?.7.3 .345
.519
4q .=6?
.5 . 5.373 _
9.4206
5.948 .373 7.32 " .553
7_3 .3 4 9 .' 5 . 79 7 __. .7.69 . . 3S .
5.731 __7h_
9.551 9 .9
9.598 9.973 9.4 _ _o. _.533 _
_ .157 . . .59)7 ._ 9- 7_ 8.Z7_
5 .. D9.9. . ... _.3 !
7.13 5.5337 7.771 . .151 73..2 .055 .. 3 . 7.75
__37.,35.3- 3 .5 ; _
. .. __ .3 ;?.
.471 5 5.793 . 5.f_5
5.735 5.731
__5.72 3 . .9.53_
_5. 5. _ .57 _ 5,999 5.,345 4.756 5.937
_ . 3 .. .2 .731? h 4.353 4.5629
5 5 .. 4. b 1 3.s -I - 2 .95
.3 _ 3.72 _ _3.440 *7....3.771. ___3..3 , 5.3 3.53 _3_.2.5 . 3+.3.3 _
3 .9 7 .3.272
2-54+ I t_ .71? .. 731 2.. 3.6
2.539 2 .551•
2_. 54 ._"_.2.75.13_
__ .• 49_ " Z.553 __ .2.15 '.. , 2.253.
2.196 2.321 2.953 2.19)
_L.8 97.. __ 1.,947.7. ...1.5",2 . .. 1.541 .. 1.152_ . 1.223._
.92 .;+.' .731
37
5 7 D1 5,.519
7.324.. 7 .4.? 3.315
S7. 23 ?. %
5 3
3 35. 9
7 77.) 3.. 3
3. 53
7.)53
3 .3
3 1 3 ?.157
..34 * _?_ ..2
?.554
7.933
2 . 3 Z9
2.T5
5 .9773
.__ .3 3_7_
74.553
7.911
3.. 5. 337:_. 3.543
_ ,3..3
2.73?
2.3 5 I .37b
__ .: 55. 1_._._._ .4 +
.775
.426
613
1.4 17 1 .%47
?315
_ 3.)?_
.. 33-7
7. )I9 5-5)9
7. 357 . 2 7
5.4333
5.15.
5.75
7.933
7.. *: t.2 7_
717
S.157
3.3..7
5.i33
__ . 3- 1 __ 61553
5. 7 5
-- 5.335
.57
,. 75
3.331
4_.-1 93 _. 119!
_ .13_P.
2.77.5
S•.77 1 53
1 .539
2.19 b
3.0 ?Z
___4 55 5_
__7 7. 57._
._..s192
6.33j
7.074
7.13 ...7.1 5.'+.
5.79 5.94
b.1 '7 _ ._ 1
5113
5.735 5.91
_5.3 51_ 4.199
4.5 3
3. 3 2
'3.557
...2.935_ __2_. i. 75
2.93 2.799
---2.337,
_1 .923__ 1.759 1 .5?8
-_L. 271_
.... ~5_3 .53
_.232.;L
- 7 -
Axial Power Distribution (KW/FT)
Figure 2
Map 2: 35% of full power
(normalized to 2758 Wt)
Core Locations
-Top -27
of
Core 5 6
12 -1-31 A
-15-t 617 18 -- 920
21-P.2
0 23 • ,-I D4
.,-
0' 26O .27
P4 -26,- 29 tI 30 • ,.4 -31-X -32
-34
35 36
.-3-7
-3839
-441 42
-43 -4445
-4-647 48
-49-50-5-5-2
53 Bottom - 54
of, £ ore.. -556
. 57
iih ,- .*909---t .280-
2.220 2.560
-3-Z-8 2
4.46B 4-705
-4-. 9 3 4-4-.98 5--- ;- 0 4s
5 .831 6.010
--6 .- 99--6- -149
5-3-6.218 6.417
--6 .48 8-6.;5 0 9
--6 02
6.135 6.515
-6-.569-6-;57 4-6-* 556
5-853 6.416.
-- 6-.-5-} 3-
6-A 492-6-.44.2-
6.140 5.563
-6--.04-7-- .02 9-
-- 5-w903-
5 .087
-- 4-37--3,986
2.88 ~ 2.162
-1-.49-31.626
.948
LI3 t' IfK
1-,225- l- 77 1
2.650 2.739
-3;-3 41-3730-4 0 03
--& 6 5
4.454 4.586
-4.-6 51-4-.259-- 4 .807-- .020
5.143 5.232
-5-.277-- 5 .266-5.075--4-.;96-4
5.321 5.411
-5-m467-5.500-5.411-4-.S G7
5.400 5.478
-5-.5 11-5.523
-5.456--5-.0 8-
5.210 5.422
--- 5-.4 22-
-- 5.388-- 5.344--5- .2-3,2
4.885 4.897
--5075-
-- 5.020-4.997--4-.-7-t 8
4.483 4.013
--- W7 0 0 -3.600-- 3.231.-' --- 2-.c7-8-4-
2.269 1.621
--- 17 ? 97-.906 .168
--. Z 50-- 2.0607 -2-;) 4 1
28-; 84-)
3.585 4.114
-4--.C-96--4.888
5 50
5.690 5.995
-r--21 7 6-6.-295
-5-.640-6-;479
6.661 6.756
-- 6- 93-6-.8 54
-6.8 74-64k5 5-
6.632 7.006
---7-079
-7.103-7 .1 02
---6;94-2
6.236 7.045
-7 ;1 40--7.150
--7.112
6.311 6.790
-6-; 95-1-6-.9 25-6,900
6.747 6.100
---6. 456
-6.574-6.503
-- 14 5
6.273 6.100
--5-;4-16
-54504-5.348
--- -94 2
4.392 3.678
-2--?831.850 2.035
- 01 F? I D3
--t-z98a-- 2.336 -2.88 5
4.569 4.973
--- 5-0 1-6-5 .620-5 782-585 8
5.865 5.769 5-634-
5.093- 5- 5 IT
5.562 5.540
-5--" 99-5--431-- 5 330---- -7 9 e
5.158 5.267
-5--270--5-.244--5-.206-4---.930
4.809 5.178 --5 9
-5.158-5.109
4.517 4.909
---4-.-994-- 4.971-
-4-9 454.848 4.391
-4-7-7 4-4-.888-4-.902
-4--9 1-7-4.914', 4.87
-- 4- .36 5-- 4-.638-4-. 595--- 34-5
3.931 3.328 --2-4501.840 1.403
-- 2;316-- ,-3669-"
-2724- -2-.9843-3i1- "-.9 P 54.453 4.919 4.960 5.543
-4-7f-f- --5 -3 15-/
-5-.604- -6-;,247-' -5-810- -b .497-5--906-" fr5-7 5.916 &.589 5.971 6.543
-- 5.879- -- 6.334-5-Z264-- 5.5855.89 9- - -2 5.927 6.262 5.941 - 6.242
5.9847- 6. 48
-5--75- --- 6-;070---9-2-9- --'---5 58 55.555 5.814 5.709 6.029 ---5_- 6- U035
-5.665- 6.004-- 5w623- -5-.980
5 -3- .4-5.804
5.037 '5:.270 5.520 "5.834
--5-.54-9- --- 5-i655-- 5.512- '--5.i832-5-.6 6- --5. A77-7
-5-. &-7"- -5-.6994.718 - 5.069 5.25b 5.570
-- 5- a-42- -- -- "
-5-.-379- -5-.6Sl--5-.335-- -5.638
5 ;309- -5.6095.218 5.556 4.599 4.971
-5-1-5-2- ----. 452--5 .265 -- 5.597-5.265- 5-.622
5.276 5.585 5.232 5.523
-4- 664-- ---4-.995----. O59- -5.282
S 8.,- -5-.251
-4--72-5-'- -4.991-4.273 4.539 3.658 3.903
--2-4 ---. ,982.016 2.085 2.300 2".110
1-I.608- 2.515L---.; 422
4.184 4 .679
-4-.78 2-- 5.668 , 6.019-.6-- 307
6.513 6.692
-- ; 850
-- 6.788-- 6.560 -7 -- 6 4
7.409 7.533
-- 7 ;595-77,;636-7.595-6-;788
7.578 7.864
-7 -947-- 7.9b7 ---7.905-- 7 45 0
7.409 7.864
-7",.926-7.947
-- 7.947-- 7-.9 8 2
6.891 7.719
-7 .-740--- 7.740 -7.598-7-6-16-7.471 6.560
-- 7. 284....7.?22 -- 7.119-- 953
6.788 6.498
-5.587-5.919-
• 5.587-5-. 070-
4.387 3.497
-2.401-1 .925
.911
.908.--1.136
1! .268l'.836
2.309 2.725
-?-.762--- 3.444-3 .023--4- 126
4.353 4.570
-4 .693*-.731: 4.351 -- -"- 997
5.206 5.339
-- 5 4 434.5 5.453 5.415 -. 111-
" 5.225
5.49 . -5-*,54 8
-5.60 5 -- 5.605
-5 5 10-4.940 5.548
-5.624-5.624-
5-.567-- 5.529-
5.016 5.396
-5-.548--- 5 .548-5.*510-
-5-. 4345.301 4.731
-5-.992- 5.149- 5.092
-4:.9404.76 9 4.465
-3.80&T-3.800--3.572'
-3.}7 3
2.736 2.166
-- I-.3871.577
.760
J-6 8/B-3
-1-; 18 4
2.660 2.874
-3 300-3.80o
-4;-3 8
4.612 4.777
-- 4-;88 9
-- 4i9'31
•5 -.-Z 04
5.507
-5-. 556-5-i-5 1--7--5-. 35 2--- "8 9
5.576 5.614
-- 567 2---5.6 72
-- 5 a 585-5 .08 s5.487 5.604
---- ;6-23-5 .623--5- 584--X.-3 f-
5.154
- . 5 6-5
-5-.526-- 5w45-75.3 5G5.020 4.803
7-5 -z-1- 36 ---5 -.097-4.990
4.542 4.094
---3.-& 16--- 3.-275-
2.320
1.034
..I 95
-8
Axial Power Distribution (KW/FT)
Figure 3
Map 3: 70% of full power
(normalized to 2758 MSt)
Core Locations
i u3: L-13Top of Core
0 .14
4
0 P4
x
-T" - -5r27 --- 12
-3r ---. 1-; 790
5 3.131
6 3.661 -7- --.- 967-
I1 5.866 12 6-031
14- --- 5-;99915- --- 5--720"1"e"-- -6-;280
17 6.398 L8 6.446 1-19- ti- - 4 5 7
120-- -- 388
27- Z- 5 4
? 3 6.088 24 6.251
- ---- Z6 0
26- ---. 23 -2-7- -- 6-.- 1-6 Z-
29 5.647 30. 6.010 31- 6-0-5-132- -6-027-33- --- 74
34- 5023 35 ,5.357 36 5.761
-36- -.. 5-..612
39- 5-.-76-240--- -- 5- 6-74
41 5.505 42 4.965 4-3- -5..3344- -- 35845- -5259
47 . .893 48 4.590 49- -3 vurn -50-' -3-.,94
5-2- -- 553 2.716 54 2.094 5-5--- -1--.4--76-56 ' .607 5 • .587
--1-4932 76
-2-647
3.0 8 3.220
--I-82 2-4-.253 -" 4.545-4.94.924 4.993 -.93-
74.5,415-- 4-.95 8--9 .3 1
5.199 5.217 5 995ii13
-- 4 ;.907
4.993 5.027
-5_044.5- 02 7 -4.924--4 -3 39
4.821 4.872
-4- 6 72---4-.855--4-.803-- 4-545-
4.476 4.6b3
--4-683-- 4-.66&-
-4.61-4-4.528-
4.270 4.115 -4---956
-4.339-- 4.2 18-4.098-
3.891 3.547
---. 20-3.251-- 2.858-. -x .5 1-4
2.066 1.515
.947
.189
--2.0 37 --2.989
5.051 5.616
-- 5,855--6 e6-1 3
7.342 7.379
---. 36-1--7-120
6-.6 26- .-2T0
7.226 7.193
--. 0 85
6-.948
6.757 6.90.1
689-3-6-.835
6-.748----3v29
6.141 6.604
-- 6-6 05--6 i.580--6 e494-
6--.2945.662 6.216
--6-.? 63
-6e221--6.1-63--6-;088
5.930 5.314
-5-.8 14-5.844--5.778-5-.6 9?-
5.567 5.345
-,.718-- 4-.6--3
3.828 3.145
-61.711 1.462
G9 03 ,
-3-2-1 5-- 3.362
-45.18'6
5.755 5.691
--63- 36-70 5
--.- 776---6- -76-7
6.685 6.580
-6--39 65-.60 1
-6 02 3--.- 0 68"
5.983 5.85S
-5 -. 7405;5965-.261
5.272 5.218
-5.091-4.978
-4-Z-36 a* 4.873
4.911 -- 4-w 8-5-7-- 4".804-4.w?18 --4-.3 5-
4.368 - 4.566 -4-z;558
'-4.494 L4v 2 4
4.158 4.135
-- 4a392-4.405-- 4-.40 9
4.359 4.125
-- 00.O 6
-4.169-- 4.000
3 .69:73.226 2.583
1.738 .979
'tom
3.9-3 4---- ; -1-'
6.155 6.417
-7-444-- 7 -;6 14
7 7.545 7.409
-- b -5-
6.674 6.583
6.-273--5- 96 5
5.873 5.873
-5- 8-9-5.713-556 0---5 - 40
5.201 5.423
--5.09-5-- 5 *-329
--- -; -
4.679 5.042
-5.0 56--- 5w034-- 4-.985
-9354.685 4.462
--- ; 8-3 4--- 4-.-873-- 4-.870--- 8 60
4.851 4.638
7-4-f-Y---. 656--4-.516
3.757 3.092
1.993 2.284
-3-.806-4-347
6.375 6.499
-7T-09 8-7-. 632-- 7. -7247--- .705
7.641 7.520
-7 ,3 15
6 2571 -6 .1;:45
6":-862
6.745 G..620
-6-4946;.;334-5 ;990
--- 5 539
6,.0 12 5.990
-5;846--- 5,.697-'-5-;089
5.444 5:.530
-- 5-z4 91--5.416--5-.324-4--w99 3
4.849 5.192
-57-.-I-75-5,.147-- 5.089-- 5,-A5-3
4.779 4.634
--5--00--- 5,.042
-5.0391 B
4,.974 4 .707
--. 524
-4-.745
--- -.- i 50-
3.761 3 .038
2.080 1..619
-2.082 -
- 3.142
5.083 5.707
-5i.6 8*6.800
--7. 160
-7 3 3957.560 7.637
-7 .736-7.580--- 7.014:---.;795
7.843 7.853
-7.814- 7. 765--- 7.648-6w761-
7.473 7.609
-7 638--7590-... 7 .473-7 *i 10 2
6.809 7.239
-7.2587.239 -
-7.219
--1. 07 36.195 6.897
6- 9 4 6--6.936
-6.887
-b-. 3 29"-6.673 5.834
-6.468-67 . 429-6.331
-- - 146.078 5.843
-- 5.*014.... 5.336-....5.044 -4-. .614
4.019 3.307
-2--4-302-1.775
.985
-!; &95-1.49 5 T -1l.329
"--1. 903 -2.;496
3.027 3.379
- 648-4.268
4.61) -4-,87 0
5.064 5.166
-- 5-; 21 2--5.009
-4 .972. 5 -3705.412 5.518
-5.49 9--5-.444
5o.286" --. .6 E5
5.2Z2? 5.277
-5:?6-- 5.259
- 5.185-4--76 8
4.925 5.083
-. 08 3-- 5.055 --- 4.990-k 1870
4.416 4.879
-- 4",9 074.870
-- 4 .814-4.722
4.564 4.074
4.444-: -4 .314
4.111 3.814
-- 3-. Z40--- 3.342 --- 3.074 -2. -703
2.278 1.704
-B .F 1 301 .361
.- .306,
1 .20-5-1-.686Z
-t-.2 159
-3.123
3.222 -3-9 7
4-;341---4 .62-- '8 5-5-
5.009 5.099
-- 5-.;090--4-.540-
5-135--- 5v-8-
5.361 5.388
--5-,;-35 25.262
-- 4 ;946
5.162 5.198
-5 .I -9-5-;i 5 3
5-.01 8-- 4- -5--5
4.946 4.973
-4-.;-9 64-4-.946
--4 i* 873-4. 47 6
4.693 4.846
-4-;Z 84-4-792-- 4-- 711
4.197 4.323
-- 4-w 45---r. 13
-4-.305-
3.90b 3.429
--3-. 25-3, 123-2-.807-
1.967 •1 I.309 ---.h2 9-1-
A,58 .135
-I
-9
Axial Power Distribution (KW!FT)
Figure4
Map 4: 70% of full power
(normalized to 2758 MWt )
Core Locations
- 13
Top of Core
0 -P.
0
Bottom of Core
I .701
27, InsW 3 .9914 1.396
--5 7-2.T3]
- 2--222 a
91 3.211 10 3.534
747 --- 4.-4-3TZ
15 4.154 16 4.892
t8 ~5;-3519 - -- 5 5
21 5.663
22 5.336
I-Z5 57
27 6.299 28 . .2.17
-Z ---- 36--307
3z b..b4l
33 • 6.687 34 6.653
-36- -555-3 7- --- -8B
391 6.897 40 6.857
4*2: 673 2 1
5: 6.596 1.46 6.453
-- 5--255-5-U91
51 4.736 52 4.246
-55- - 05
., 3017 57 1.975
.950
1.470 1.864 2.222
23 12--- 81 q
3.405 3.602.
-3.1931
4.0 10--- 3 b U6-
4.172 4.388
-- .-- 9"
-4-.657 -4.74 r-- 4-7 53
4.675 4.477
---4--;9 W5-5.071
5. 79 -5-JZ33
5.215 4.675
-5-4305.520
5.538 5.323
-5-7135
5.626 5.6528
5.251-5 .556
5.448 5.287
-'5 .0"5-
-4.5567-4-;244
4. GI-
3.704 3.219 2- -'Z S
1 -;S7064 &T
--. 516-
1.959 --7FZ31.887 2.424
--3.559-- 3-5 4 5-1 -T5zu
4.555 4.804
--5-29 25-.5555.641 5.083 5.857
--6.U lb
620 76.319
6.485 6.196 -6.311 •
6.778--6.9 0 3
7.035 6.963
7.176--7'.335"--7. q-
7.435 7.399
-- 7.24 2---7.509
7.563 7.539
-5 347.215
7.420 7.356
7-7-.0 58
:-6.317
6496.322 5.873
--4.465
1.895
1 .318 -- T-. g2.662 3.451 4.007
-- 4--439.q43 9
5.033 5.115
-104 5.008
4.774 5.067
570 43-
--5-VT-5-'5.029 4.635
-5- 9 4
--5-J575.243 4 .8b7
---15395
---5-.4-2 9-5.421 5.217
3--5-386-- 5-.462"5- : -5 5.509 5.485
-4.988-5.4717
5.609 5.637
-56Z2-5-;4-417 -5-.-097
5.257 4.931 --- .375
-- 3-.59q. 530
2,45a
1 .892
2.309 2.978
3.118 4.00
5.019 5.143
-5311-5-407
4.775 5 .438
3 5T5-
5.6195.6TtW
5.595 5.225.
-5--:-74-
5-7 2 ZS5T4-4
5.761 * 5.659
.-5-792
5.886 ' 5.853
5.752-5 *941-
" 579 r5.995. 5.991
5-.350-5-. 86 7
6.093 6.122
--6 .1524
5.915
5.624
----. -3-C3--.4 22-
2.972
2.80 .740 .776 " ZT V---9 :-97TY2.867 2.159 1.082 3.b45 2.869 1.534
-57 3 509-- -. 91-37 4535 3.9487 -?.737 "
--. 68- 4008 2.292 ~~~5.3] 4.91 T7
.5.556 5.148 3.152
5.655 5.378 1 3.420 -5.t5- 7-5-.59s- -- 642
5-.696 ... 5.506 - 3.824' .648-- -- 5.975 -- 3.960
527- 58 5- -65.308 5.734 3.5a25.657 6.476 4 .285 50- ---- 656-- -4-.-5265-.7r6- -5.907 . .63 45.734 -. ... 5.927 -- 4 .795-...
7.-0 17- --- E 515.618 7.047 4.569 5.460 & .376 4.619
5 662 1 9 -- 5 5-.-5892- 7.488- 5.073
-5-5 - -- 7.629- 5.7 "--5-- 73- --- 7-- 7 9- 7--5--7? 9
5.927 7.739 5.305 ' 5.532 7.458 .5.277
.6-9- -7 8-31- -q 6006- 7.79- --5.416
'-6-;082- -- .010 . ..5.518'-6709-- - T2 - .53-
6.082 8.190 5.611 5.b26 8.130 5.602
"5.699- -" -.-i 6 7 --'5-l296 . ." -3..109 5
6-041 . .. 5.555-.I2 - 240 -- 5. 74 1 "
-75- ----- 07n- -5-76 7
6.199 3.340 5.787 6.195 9.320 5.750
-- 96 ?0- -5-.5577 ---5 ,$A-- 7.238 - - 5.175
... 187- 8.06. - 5.4 ] ' --- 57. 5"-. B-- 9 0- -53 4
6.389 7.990 5.511 6.397 7.909 5.500 -366- -7;74 9- 531 4
-6:;180- 1-.488- 5-045
75-.885- -- 6.426- -4-.424-- 6 -T---5r 57- --- 331
5 .998 6.486 4.118 5.620 5.925 3.6562
.0T- --- 73-- ---3-.-?09-- 4-.175 = - .190 . ... 2 5 8
2.984 -- .77- 1.697-- Z--, 7I-Z- -- -5- ---. 83 6T
,.; %1.635 1.?83 , .965
133 .489
1.166
1.504
Z.8
3.079 3.346
-- .74-46U--3-.7 4-4
--- 3-;-975-3--"4-
3.607 4.186
---, .554--- .6-7 9
4.759 4.554
-4 73 -
5.223 5.179
-5.268-5375
5.473 5.473
~~5 -.-U 5
5.670 5.625
--- 5--/ 36-5-045---- 5.-32---5-4-g-
5.464 5.346
-- 5-4 -3'-4-.87 5
346 3 ,563
-616
. .936
- 10
Axial Power Distribution (KW/FT)
Figure 5
Map 5: 70% of full power
(normalized to 2758 Mt)
Core Locations
Top of Core
0 .)
p4 0
x
Bottom
of Core
1
3 4
-57
9 10:
TT"12-3
15 16 TT" 18-I 9 .T9.
21 22
-73-2425
27 28
-30
-32133
34
39 40
-4-2
45 146
-4-3
-48..49_
51 52
5-4 -3
51-
rR9 L13
1 .582 1 .532
1.962 2.281 2.703 2.947
---3". £9-- 3T424
.-39-6 3.5 4 67 --4 ~ 7- .-- 2~ -- Z T
5-.TT- -47r6 5.627 5.013 6.046 5.258
-E- -7-- -5-B 9--6--. 51 5- -5-. a5
-6-595- -5-.4GT 6-- -1 =4 !- 4 -6.046 5.398 6.73 5.537
-6- -- - 5.5726-.836- 5. 502
6.576 5.153 5.767 4.821 -. -33- -- 5
-6-.409- 5 .170
6.232 4.97R 5.897 4.332
5-5- -4.-834-- -~- -- -76 9
U- -- 5 v9-5.795 4.612 5.618 4.332
59-- --4375.497 .40.7
-T- 4-,3325.357 4.262
' 5.237 4.192 6 - 3-.878
-- 4--,399-- --3 .8 08-- 855- 3.948
' 4.725 3.825, 4.548 3.668
-i--4 -.065 -- 3 -162-73--358- -2.847
3.153 2.533 2.O00 2.218 -- 3-----r- 8a4
5 786- '-.345
. - .1
K6 q v:t
__?5543.648 4.748
-5--.74'45.258
-8472
7.840 8.092 9-. ? 3 3
9.335 -8 .354
--. 03q
7.311 * 8.364 -3 -.3 938.345-- .?57
--. ;l 6 0
7.947 ;6.957
.T; 772
,-7.782 f756&57.471 5.370
nfl
I .561 --1.718
? .310 3.91.8
3- 576-" -4 1359
- Z'+- ,Z_ 07+
5.142 5.372
-5.603 ,--5.557 T-- --976
5.554 5.750
5.8 155.732 .
-5-.~5l T-2 5.207 5.161 T-.363
-- 5.345... 5.299T5-.2255.059 4.69
2.474
I 3,.421 4.529
-- S-.5-'6-
-5-. 933-6-.35U
7.568 7.782
-- T. 9 3 1-7.8 73-
7.132 -7.642
-- 7-.-5 72---7.7tg-- T3-T5t 7.093
6.711
[-7.030-6-.963-T--.D30-
* 6.700 6.212
-- .45-
6.196 5.845
-5-.52-
5.672 5.563
-5 .ZZbVj
-- 043---5 20 1
.--5---5.165 5.056
-- 4-.6 2 4-
*- - 336-4-; 3 3 6 -- 4-30 a-
4.108 3.755
521--909
1.806
3.526
5.557
---6.314 -6-.92 5
7 449 1 .436"
r7346-7-.227-7-.-022,-67.755
6.515 6.564 6 .45
-"127
5.610 5.113
- 5.49r02 -- 5--.40 2
5.058 .4.478
-4-.862-4-.787
4.580 4.257 4-094- .340--- q 307
*-4 Z(>4
4.204 4.131
-- 3-8 6-6 -3 .706
-3-.99
4.002 3.985
-3- .953-- 3-.735,--3-. 55 6
-3.14Z-8
3.609 3.333
--2- 939" 7-2-379
- .95
.890
i 5.773
4.334 5.586
F-7.-092
8.425 8.450
-- q 5 5
7.024 7.385
--7.1I067-6-.940
6.375 .5.909
7-6--: 1-3 3-
5.711 5.221'
--- €-5-5-- 47 3
5.124, 4 t.797
--q.85-
'--4-873
4 .684 614
4 .020,-7
57-
-4.-43 7
4.447 4. .419
4.36-
.---. T9-" 4.066 3.792
-r
--- ;-783
':2.067 '
5.942
4 .627 5.668
B .630 8.637
B.422, B .51V
7.223 7.562
--- 7-.
-- 7.25
6.532 6.150
-6---. 3tt
-I75
5.907 5.429
--5-."578
-5.508---5 3 99
5.276 4 .943
4.979
4 .829 4 .749 . . - 1
4.7-4-366 5 96-
4.627 4.594
- 2 54.165 3.903
1.870
03
1.632
2.164 2.809 3.33U
4.941 5.194
Y-5- 4-65-T -5--.46 5-
--. -5T-75.46
5.375 5.610
--- &69 2
-- 5-. 5 T65.303. 4.8350
- .293-5-7257
5.049 4.416
1T4
7W7U 4.A69 4 .407
-7.4 9T7--4-., 7 5
4 4.343 4.226
.--38.80-- 4-.-009
3--5.7 5--"
3.864 S3.710 "
7-2'a 7 72--Z--805,2 .54 3 2 226
13 az
.471
---.7.122" -- 4.-949-7.073 . 4..593
6.918 4.7D9 6.705 4.248
-''550 - _p4.55 .2
6,72 .55
6.326 4.38, 6.229 4.248
5.288 -73,;981.- 5.851- --- 064--5--75- -3-9995.547 3.889 5.521 3.732
-5-3715- -3 51-5.123 7-3.0507 4.425 .986
---- 5 3'7- -- e-. 2.
4.4 45 2.543 4.027 2.184
-3-;4 46 4 T6 --2.785 - , --j.7or---?,.- 7 B 5- 1--T . 70T
7.91 19-.235
.728 .129
Axial Power Distribution (LW/FT)
Figure 6
Map 6: 70% of full power
(normalized to 2758 MWt)
Core Locations
P aSI 0Po , , L13 K,_, ,q 1 ,? D3. _ I I .933- 1.268 2.448 2.313 4.973 i 4.757 i 1.19 1 094 1.142
Top. . . ?- -35- .- 0+ T2-67 F7 0.9q5- ... 75T- - 9-1 69 .T?35- " of 3 1 1.929 2.567 3.308 3.218 3.915 3.020 1 .50 1.475 Core ., 2.255 2.433 3.444 4.247 4.235 4.9f9 3.916 2 043 2.000 Z5b14 -2-.6-67 9 4.97 j --q r57-47- 77 6 2 ! )3- 49 q -6- -- 97 --. 957- 5.01T- 5-.342 o Df)3-70V- 5.32 2 .938 -8 78" S-- 5 --- ----.950 - 05 2 2 ---5--750- -6- 3Z 5. 9 " 2 9 5 29 4
7 F 47T3Y?7, 5.390. i. 98 :Z9 4.700 4.229 6.281 6.194 6.984 7.219 6.603 4 136 3.970
10 5.039 4.427 6.5 26 6.244 7.06b -7.241 5 .8 41 4 2 89 4.22,3 '- -5Tr- -- 6455 -- 6 3- -67221- --77026- ..'-.197- --6-980 " --7-# - --12- ----5--452- -- 64! 2 --6.724-- 1658 -6:96 -7.099 - 7.0S9- 636- --4-5613- S5 4.-642 6.737 -60 43 797 &-.931 7.13(9- 4 .702 4;629
15 5.286 4.660 5.903 L 5.377 5.750 6.245 6.771 4 4.233 4.177 16 5.745 4.839 6.624 1 5.724 6.378 6.553 7.298 4.343 4.764 -T- -- --7- ----4--.9"- U 69 56- -- 3-67- -65027 --7-.357- g---9 9 3- .--. S-f
-- 594I- -4-.946- 6--.-702 5627 -6-. 95- 6-.4-1- -7.397 5.068- f-4---f953F9- 56 --4--.98 2-- q86-2698 7--5.527- '--6T.I97 -6.326 7.397-- 5.134 -4-980 7 --59-5-3- -4 -,--- Z - 2 --5-.10 6- 4-97T 21 5.867 4.713 6-24 5.267 5.9581. 5.950 7.?58 5.031 4.899 22 5-330 4.516 b .087 4 .719 5.383 . 5.727 6.424 4.674 4.430 -23- 78 - -857- 66 3 - 0 - 672- 7.2; 8- 833- .78-2-24 977 4.946- 6.3 :--5-154- -579T -6005 -- 7.417- 5.012- 4-9A4
o -5- T02-- 5.0007 3671 57128- 5.3 5--985- -7.466. 5049- --4999 •H "2-G 6 --570- -6--74- -5-J0-7 57 -Z3- .-5-9- 5-- --7,6--6 67 .T- -3750T7,4 27 6.000 4.928 6.644 5.066 5.674 4 •. , 5.847 7.:3 67 5.068 4 .980
.- 28 5.742 4.355 6.468 4.722 5-473 5.419 * 5.S51 4.965 4.827 O ---S -37 S9 3-- ---50-- T 1 - T- - -- 58- - 40- - 7 P4 30- ---5--9-8-6-- ---5.'0 U -- .11 -5.023- -5-55I- 5-.771 .. 7.347- -5.149 - 9 -3I "---6-47- -5-.036- 6.682- 5-.020-- -558-4- -5780. 7-407- -5.106 -4.9T1
t' "- " 6 "-5---U36-- U90-- -- --g99 -- ' " - "------ --4- g -5;J -5--7---,• -I 33 6.056 5.018 6.675 4.970 5.507 5.692 7.457 5.096 4.999 3 ft 5.957 4.731 6.582 4.851 5.434 5.407 7.298 5.09 4-1&4
-35- --5---35-- -4- T5- -- 5-.977- 4-- 1-.-TE --- 5-26;- ---. 553- -- 5 7 .6-3V 5-.-980 --- 5.0i8- 6-.46 --- 4.818 -5-. 3 1 0 -5567 -7.308- 4 '.993 ----- 953 +
37- -073- 5-036 6-.596- -886 - 45 5. 667 .7.. 357- 5.096- 5-.053-3T ~OT 3U0 .579,r ----6-JTDT- --5 [70"- -9"Z- - - SgB-" - S- ---.--6-T- -- 357-. ---5-- -5- - -2-
39 6.075 4.982 1 6.585 4.901 5.446 5.652 7.387 1 5.)96 +5.026 40: 6.017 4.910 6.540 4 S7, 5.427 5.618 7.337 5.049 4.971 -4-F- 5 6- 4-6- 4779- 5T3- --5.36T -7 T14 "r--- -96 5 -- 8"*54-42- 5-229-- -4.--5"52- -5.766- --4---335- 47;7789- --5.283- --6.424-- --A.467"- -4-.-277 - 3- 5- 766- -82T - 6 272 4--- 787- 5.29 5588 . . .u 8 F -46--' --- -- 7 --- -. 0- -385 -T- b5--7 -- 7 *05 9- 4927 -;.o45 5.706 4.731 6.350 4.929 5.466 5.727 6.960 4..860 4.755 46 5.566 4.570 6.282 4.958 5.481 5.712 6.561 4.758 4.629 -4- -5 -360 T T-.17 .- '3B- F Z 567T -'5" --12q- -4-.qq48 -5-0-- 3-961-- 5--979- - 846- ;-5 467- 5--501- --6.424 - 4.336- '4-77-49- -26- .584- 5229- -- 35 6-- 91- 1--5-285- --5'600- --3'717-' --3.5I0 --50" W .b ' 7 -----5-5-I- :-.---727- 5 9q- "---?-Y4 - 7-5-.95 7- 7-. -75&- -- 'T"7 51 4.038 3.226 5.309 4.644 5.246 5.322 5.100 3.520 3.347 52 3.600 2.832 4.-912 4 .396 4.994 4 .993 5.074 3.163 2.986 -5 -- U T- -2- 3J - ---V-73 7-5- - 15 q-- --.- -0'- T-:7-2- ---.. 53
-54- -- 3?2 - --- 64 9- -- 3-671- ---3-342- F--390Z- ,-3-.671 - -3.535 2.177 2.003 Bottom -55- 1--.50- -308-- --- W;724-ZI- 285-- -- 393 - - -5-of Core -5"- - .U3. -- 1 5-- +-. TTr-, - .j 7 -
57 .653 .197 2.198 1.849 2.508 .448 .824 .70. .577 - , , i. " " i " "
- 12
Axiagower Distribution (KW/FT
Figure 7
Map 7: 90% of full power
(normalized to 2758 MWt)
Core Locations
LJ~ ii W.1k Kb
Top of Core
S3
-5
-7
9 I0 TI•Fr
15
Z7
F21~ 2
-24--2-5-
27 28 -2-9
-31;--
33 34 "35-36
-3-39 40
4243
45 46
41
-49
52
53-S7
' . *343 -1--232-I .744-- 2-411L--2-986
3.428 3 . 663
,4.872-- 5.202 .... -5.-43-7-
5.586 5.669
-- 5-54.2_
5.338 5.869 S. q6h
1-6.0246.035 6.005 5.891 5.280 5.83-75.976 6.005
-5-,976-- 5.. 949-- 5.579.. _,5_l -!L
5.909 5.947
_5-..D 5.a_ 5.920-5 .780_
5.825 5.900
_5 .9 0 &
-5. 8825.812..
5.061 5.593
-5_.532_ -- 5 383
4.858 4.126 4.266.3.940.
2.207 . 688
.. 2 ..76 __... 82_
~GiL L~19
1 -',32
L 1 24.
,4.. 09
i. 2.2.. T . - i_
,.52 -'.74
.. L5.._
c 5.0o8 •4.;54 _..-.. 52..
09 4.860
4.i60 4 4.293
• . 00 4 . f87
• _4.i_76
. ... I
4.833 * *.P19
-- -25._
,. 30 3 U
_..12
3. 23 3.456
1.i96 1.,12 __2i6.
1,.61? -2--0-22R " -856_
3.68-4,._
5.127 5.305
L6.€489-.
..__& a2_z_ 1 6.877 6.8 56
6.201 6.780
.6.815 --6-._8 a 6..1
6.773 6.726 6.634 6.130
-6..6 36.660 6.679
.-- 66a&_. 6b48
6.546 6.575
-6.52-0L6.258-. .._5.S. 806.
6.345 6.424
-6.399-6-.345_L._L_._4_
5.665 6.144
_.. .1_93_...
5.684 5.173
-5.1.5 4 _.4 ._73 L
3.357
2.463
.2_.231.9..
03__1 _/3
2.762 3.584 4.556 5.293
5 . 21
5.699 6.277
5.213
5 . I;', 5.051
5_ . 9 7 -5. 7-1
5.213 ,5.668
5.51
L.. .9_I__
5.047
5.17
4. 7697 _ 4- 9.0_6
.047
4.04
43-.849
2 .306_
..__A.4.6 682
4 .849
1-.._936 4'&. *08
4.36 ... .883.9
I .. 15
3.619 4.663 _5-63_5
-- 2-9-i-- 0:.4-9-_
S7.230
7.287 7.227
6.227 6.600
--.. 466---.L 36-8
5.941
5.556 ._q .. U /._
__ - 936__
-5-.38 2
5.728 5.294
--- 32-5.625
-_5, - 2._.
5.525. 5.227
-5.403__.. .4iL_
5.430 ".399
451-4-L.. _5 . 4. .. _ ---4- 945-5-364
5.454 9 5.470,
_ 5-227_ _--5.. 19
5.171:
-4.85 -'--.313,,
3.538 2.543 1.7 15
.. I.
4.132
6.316
L_? .503_ 6Z6
._- 5,0 37 .4 6 8-. 7.373 7.200 6 .715
6.607 6.469
-6-045-~.
_ 21... . 6 .129 6 .062 6-03.0
_5. 223_.
5 .617 5 .795
. 5 .,34L. :--%-91_
5.617 5 .640
5 .5 -7 5 .552 5 .2-67
5.585 5.644 5.6-4 5 .6L.6
5.334 5 .,169
_ 5 6... -.
-4-902-
3 .4-9 2.89
L..,72A...
. .. g. 1.185 1. 9 84 1 Q£-&
-5-33-7- 3.032 _ 3 3. O l, 6
6.725 -. .. 136
7, .13-8- , 4 G_
I 2? 4.812
7. 275 _.4 319 L__.7_ 4-n__ q.903
__-43 3- 5.121
7.312 5.044 ,...L...ISL 4.601
--I...29_0. - 8' !'!
.... 4 5.023 7.445 5.03. 7. 3 2 . 5.009
.. U.. ',L. 4. 861 -6-926- . 9
_7 _. _ 93 7.297 7.32 ____ 7.3 _.1..9 ..-- _
7 - 19719..g,
6_. S' 7L6 ._,t.. ,'_, 2 _.
6.32 ; 4.9
7.2 0 0 2 (9 7.1i 76 - 9 _
.0 9 - L_/....89...
.16/-- 46228
• 6.866 '_ .. 6.770 , . _.
6.547 _=& 6.325 4.179
3.5 ".7 -3 ~32
3 .5-3 3 1: 2.103 L2 41 .'31it !1I.982 ; . o
L. 27
1 .615
2.174
3-1741
13..]2.. 4 .112 4,. 69
_5...L733_ . 5... _ , 4-.62-5
4 4 ,3
__-95 .. Q. -
4.369
4 . 01 0_
4.9 63.
5... ...
.5.010
4.- 7 3
. ,9.50_3
4.93 4. 875
4_..950_ _10..010
4.963
_.4. 193 ..
_4. -1.._
4. 693 4.578
_4.099..
V0
3.35 2.92'
1 .8'0 1 .209Bottom
of Core
- 13
Axial Power Distribution (KW/FT)
Figure 8
Map 8: 100% of full power
Core Locations.
,£,g ri . L13 - ' ,q i F'?7 D3 (13
Top of Core
1.
3
9 10
13 -1515
18
..19-
21 22
2425
27 28 Z'29
30 -31
33 34 -35
-37
39 40
42 -43
45 45
-4-7 --43 - 49
51 52
-53 -54
55 -57T
1 .159
2.054 _.731
.65-
5.089 5 .350
-5-. 7247
5.602 S5.9o-1
- 3 09. 6b.003
-5.--. V 5.786
, . 255
5.965
5 97 1
5.66b
.0-57
5.8743
* 5.830
-5-.782
5.797
--5 .+ 7 ",,. ..... 5 -. 77
-5.09S
- 5476
*--5 -. , 4
- - .5* 83 --
5.7,44
2 P003
4 7.4446
3.3A4 -T-7 7
---- 5 5 7
;1 .04 5
1.432
2.005 2.549
I v 79
4.323 4.52 ' 4 -.6 4
4.7224.710
4.698 4.84,?
4 .4274.927
4.651 4.43?
-- -. 7 9-_
4 S7 ...4-.842...4.3B571
4 - .7 4.770 4.227
--4--7 i0
4.7b2 4.794-
-4-77 24 .758 4.504
4.734 "
-4-.7422
4.698 4.(125 - - -7 q"
... 4.287
- .4.553
4.456 4.335
-3.'-0 46 - -3_r-o5-
3.704 2.717
- --. 7-.0 .205
1.541 ;2.894 --' .
2.a98 3.711 3.751 4.64? --4 _fe-6-- ,---. 73 5.313 5 .527 -5: 7- .874
-- i-8 T 40?2
6.543 6.518 6.766 6.529
--6.95d 6.539
5.986 5.664 6.773 5.948
6.705 5.268
6.186 5.025
6. 5 . -3 6.37 5 74C4
6.5 5 5.1q5 S6.,7 4.730
.. 4?. 8 -5.0 --6.542 --0-76
6:5 4 2' T4
6.507 4.992 6.409• 4.703
...5 -.- T')-5- --4_ 52 314 -!;.g5
6.37h 4.892 6.321 4.864 -- 4- . 7T-5.625- -4:06
7-- -06- ,"-"7 6-.-
6.177 4.923 6.1 23 4 .947
-5.8 9- 4. 753
1 99- -4-532
5.29u 4.641
4.911 ,4.372
.--3.715 -3q207Z
-2-79 G-: 2. 5
S2.?.64 1.371
3.6q9
3.9P6 5'+ .27T i 5.115
6 .26 -6.273
6. 5 . 7.254 :1.395 *7.419 7.3.41 -7 .2 22
F-7.065 76.4-77 6.325
1 6.665
16.530
6.006 5.549
5 .+969
5.275
5.310
-5--Z- =
-5 .-6 55
5.566 5.275
-5-7175
5 . q4705.50.
5 .464 5 .427
5.512
5.543
--2-5 5.41
S4.926
2.64 1
Bottom of Core
5 .202 s 4 .191 4 .557 5 .217
-6.676
7.534 -I .52B 7 7.34 7 . i3r4 7.229 6- . -b "
6.457 6 .795 6-.712 6.626
5 .7 6.131 5.726 " "* 7U 6
5 .9 57 5 .453 5 .bs/
3 24
5- 5 75
7-731-0 T.h
5.72z
.63 -).61 8
-. 573
5. 715 5 .124
357
3 .73, l
-"2722--TJ3T
2 .301
1 .12 3
3 .1-. 34 1
4
5 . s./.o
5.5 7 157
7.35
7.329
7 * 57
- [71T
7.3Z9 s .420
7.447
7 .3 29 5.795
-__ * -~
7. ?50 7.111
7.i 11 7.131
7- . ^j' 2
5. '3
6 . 791
2-;T
-) .9
3.110
* 1lbO9
1 .507
2 .552
3.796 .. 178 . 4.445
464 .307
5 .1 3Z
.75
4 .953
5.17.2
*5.055
5. 760
-- V7--
-%-.-9 -8:5.0174
-. 922 4. 3 9
i .903
-4. -- r' *6-
4 '&1
4.731
i .346
-: .--330
4.555 i. 5.}6
- 1-4-.- 1 97
3..148
...... 2 32
* .3 58
1 7
1 . 174 ,
2.336
4 .,700 4
4.689 4726
-t .599 .7 G
S .0]75
-- 5.15 -4 4 -43
4.7 e 0
4 s
4.746 -- :,,. 6Y
-4 5
4.5 ,t . 5 33,
4 .726
... 4 5-....4.S! FI
4.526
4.10"
S3-.371. ... 3-. ,04
3 ,1 b 6
2.7N.
.970
-14
Q. What was e numerial value of the Lal offset when each of the eight maps was taken?
A. The values of axial offset for Maps #1 through
#8 are as follows:
Map # Power 'Level (%) Axial Offset-(%)
1 r2 35.38
2 35 -0.77
3 70 9.36
4 70 -10.28
5 '70 16.65
6 70 2.81
7 90 4.27
8 100 4.99
12. Q. What was the numerical value of the core inlet
temperature when Maps 1 through 7 were taken?
A. Core Inlet temperature for Maps 1 through 7,
as measured by narrow range Resistance Temperature
Detectors (RTD's) are as follows:
Map #1 Core Inlet Temperature (OF)
1 539
2 540
3 539
4 541
5 541
6 541*
7 527
*Estimated based upon using Tavg = 559°F at 2-3 hrs before Map 6 was taken.
.3.-15
Provide a lantitative estimate for jial power distribut,0n flattening due to xenon isoning and due to depletion for maps 4 and 8.
A. Quantitative estimates of the effects of Xenon
poisoning and depletion on core radial power
distribution at Map 4 and 8 conditions are not
available. Map 4 was taken in a transient condition
about two hours after a deep control rod insertion
(C/D at 180 steps) in order to produce a large
negative axial offset for the purpose of excore
incore axial offset calibration. Map 8 represents
the first normal, full power operation, monthly
map after the startup tests. It was taken to
verify that peaking factors are within Technical
Specification limits. These maps did not require
detailed calculations to determine Xenon effects
on the radial power distribution. The depletion
effect on the radial power distribution for these
maps is insignificant. Therefore we do not have
such calculations on hand.
In lieu of quantitative estimates for radial
power distribution flattening for Maps 4 and 8,
We have attached figure 9 which gives the percentage
difference between the average assembly-wise power
distributions for the Beginning of Life (BOL), Hot
Full Power (HFP), No Xenon and the HFP Equilibrium
Xenon, 150 MWD/MTU conditions. Figure 9, therefore
depicts the effect on radial power distribution
due to xenon poisoning and due to depletion representative
of the beginning of life of Cycle 2.
0- jL-
FIGURE 9
PERCENT DIFFERENCE BE'TWEEN BOL-HFP-NO_ XENON AND BOL-HFP-EQXE AVERAGE ASSEMBLYWISE POWER DISTRIBUTIONS
8.
H.. -8.80.
TI, F 1-7.50 I -6.90 1-64 i~~~l-___'__° I I° -'i , ° !
E 1-4.90 -5.0 -4.10 -2.90
D -2.90 -1.90 1 -50 Lu ~ K i o_ Cf+.30 .60 11+2.30 +1.20
B +2.50 +3.90 +80 +3.80 B L _o F..
L I iI ! '.-.---- ---___ __ _
.30 I
K___ ____ + 20 +3 .80
+ 0I
In/out Tilt APT =- 4%
AP 6 .
S -17
Figure 9 (Continued)
Figure 9 presents the effects on the assembly average power
distribution of:
(1) Xenon poisoning (2) depletion
The power distributions are calculated for 0 MWD/MTU, No Xenon,
and 150 MWD/MTU, Equilibrium Xenon at HFP-ARO conditions.
The percent differences were calculated as follows:
NOXE (0 nWD/MTU) - EQXE (150 ,.VlD/MTU) x 10
PEQXE (150 IW!D/t T ) J
The in/out tilt calculation is based upon the summation of the assembly
average powers as follows:
5 5 APT = E
Si=1 j=lAPij * fij
8 6 APB = z APi f
i=6 j=l
5 5
ij=l ,I
fiJT= 10.125, T.
8)6 E fij B = 14.0
i.,j=6,1 1
where: i = row
j = column
f.= fraction of assembly
f in I/Sth core geometry
AP.. = % Difference No Xenon/EQXE
-1814. Q. Describeoe methods that were used* verify
(visually or otherwise) the placement of the fuel assemblies and the placement of the burnable poison clusters. Which methods were rechecked after the first power map was taken?
A. The verification of the placement of the fuel
assemblies and the placement of the assembly
inserts (i.e. burnable poison assembly, etc) was
carried out at three levels.
(i) First Level Verification
The first level Verification was carried
out according to IP-2 Cycle 2 Loading Procedure
SOP 1.I2. This procedure provided the instructions
for the step by step movement of each fuel
assembly including the removal and insertion
of burnable poison rod assemblies or thimble
plugs. Specifically, the procedure SOP 17.2
was used to control the following:
a) movement of fuel assemblies from the
core to specific locations in the spent
fuel pit,
b) the removal or replacement of burnable
poison rod assemblies; thimble plugs,
and other inserts in the fuel assemblies.
c) relocation of the remaining fuel in the
core to the new locations,
d) Movement and final placement in the
core of used fuel assemblies and new
fuel assemblies.
0 -19- 0a'-.
Procedure SOP 17.2 was followed in a
step by step manner and each step was checked
off when completed. Where changes in sequence,
were required, these changes were covered-by
approved procedure changes. Other plant
procedures govern the review, approval and
implementation of any changes to the Cycle 2
Loading Procedure.
When fuel assemblies were transported
from the fuel storage building through the
transfer tube into the containment, procedure
SOP 17.2 required visual confirmation of each
fuel assembly identification number while
each fuel assembly passed through the upender
in the fuel storage building. Although it was
not required by the procedure, this identification
was again verified when the fuel assembly reached
the upender in the containment building.
(ii) Second Level Verification
The second level verification was carried out
according to IP-2 Cycle 2 Procedure SOP 17.20.
This procedure provided for a visual
verification that each fuel assembly and assembly
insert were correctly placed in the core in
accordance with the design core loading patterns
given in SOP 17.20.
* This procedure utilized video equipment
provided by Westinghouse. The verification
was conducted by moving the camera from one
fuel assembly to another to confirm the fuel
assembly identification number and orientation
and the identification number and orientation
of the assembly insert. The core loading pattern
sheet of SOP 17.20 was checked off as each item
was confirmed. A video and audio recording was
nade of this inspection.
(iii) Third Level Verification
As a third level of verification, the video
tape and audio recording were reviewed immediately
after the live video inspection. This review
revealed no discrepancies from the design loading
pattern.
On September 22, 1976 an incore flux map was taken with
the reactor at HZP and BOL conditions. Subsequent to that flux
map, the third level verification was re-reviewed. No discrepancies
were observed.
-21-
e h~
15. Q.
A. No low power (435%) maps were taken since Map 1.
Were any low power maps taken since Map 1? If so, provide the low power map and high power, equilibrium xenon map at approximately the same burnup. Also give the approximate value of the xenon poisoning for the low power map.
0-