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-.52@7-----4.527

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-