ML032900132

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Demonstration and Estimation of Conservatism of the Application of a Lower Limit Quality Using CF Test Data
ML032900132
Person / Time
Site: Crystal River, PROJ0728  Duke Energy icon.png
Issue date: 10/10/2003
From:
Framatome ANP
To:
Office of Nuclear Reactor Regulation
References
Download: ML032900132 (37)
v • d • e


Text

-'

J Demonstration and Estimation of Conservatism of the Application of a Lower Limit Quality Using CHF Test Data NRC Review Visit, Correlation Application at Qualities Below the Lower Quality Limit A

Page 1 of 9 FRAMATOME ANP

Figure 2 Axial Georrnctry - Framatome ANP Test No 49.0 1 t I EOHL (143.40")

2.

3 (143,4Y)

CUD v

(147.06"')

V 165

.t ---.?

GRIV SS (I38.Z-0")

SS1 Trc

  • I ( 126.04-)
e GRID NIMv

( 127.04')

V 63 T/C T/C

  1. 2 (

it 3 (

4 115.78W-)

105.5z2)

PI'

  • 195.26')

85.00 ')

75.54')

65.00 ')

=

GRID GRID GRItD T/C # S <

T/C 5b(

  • 6 (

2 (2

3

)

o0

.5

.1 Ss S

CRID MV GRID Ss CR1I D NIr GRID SS (11 8.04-)

(106.52 )

( 97 52")

(

6.0")

( 77.00")

( 653-0 )

( 56.5-)

SC;;6 V161 SG5 V160 SC4 V159 5C3 7

, '-, -.- I PT 4 1 ( 20.28')

CiD G;RIr) SS GRID MV GRI SS (RI MV

( 45.00--)

( 36. rxr)

( 24.50')

V155

( 12.50")

SG1

<iO AX"-

V154 V.156

-%G-2 BOH-L (

.00)

I I

IL GRID ID t

r

- Mixing Vane SS

- Simple Support F49OAXLCDR.

NRC Review Visit, Correlation Application at Qualities Below the Lower Quality Limit A

Page 2 of 9 FRAMATOME ANP

CAI7f F(A-r Pt~mY 1.60 1.40 AC A L 1.20-1.00 g

0.80

(

  • E 0.60

/

S 0.40 4 0.20 -

iX ^L 0.00 0.00 0.10 0.20 03 0.4 0.50 0.60 0.70 Normalized Axial Distance NRC Review Visit, Correlation Application Below the Lower Quality Limit Page 3 of 9 r

I I I I I I I 0.80 0.90 1.00

($3,f:

at Qualities A

FRAMATOME ANP

MAP vs Mass Velocity n lb/hr-ft2

-1.5 11 I,,

eS 3# 'X

  • . X Margin Increase CHF Correlation MAP (iU) CHF fron B3BURNS.LOC Data in this Analysis 144 Mean MP CHIF Ratio 1.0000 Std Dev Coef ar 0.0587 0.0587 Min Max Values 0.8212 1.1536 Des Linit / Hornality 1.124 Rccept Data Out by Range, Outlier 0 /

0 CMF/FnsntCrid it 1.000O1.000O2.250 Mass Vel Range 0.953 to 3.527 Quality Range 0.0373 to.3471 Pressure Range 1500 to 2465

-rfl

-0.5 0.0

-2.0 1l 4.0 MP s Qua at CHF I ity

-1.5 MP vs Pressure psia

-1.5 I

i t

I

-.5

4.

~~

142'!0.A#

t 4

  • -- *.5-.

r

. 0.

-0.5

_0.0 I

17.5 I

35.0 100 1

2000 1

30D0 0.0 35.0 1000 2000 3000 NRC Review Visit, Correlation Application at Qualities Below the Lower Quality Limit Page 4 of 9 A

FRAMATOME ANP

Critical Heat Flux versus Quality (Location)

Colunbia CF Point 13184 CHF, Btutfr-Ft2 1350000.

1150000.

850000.

X Predicted by Correlation Achieved without Detection Predicted with Quality Linit

.13 3500O.

-. 12

-. 07

-. 02

.03 Quality (Axial Location)

.08 NRC Review Visit, Correlation Application at Qualities Below the Lower Quality Limit A

Page5 of 9 FRAMATOME ANP

Critical Heat Flux versus Quality (Location)

Colunbia CHF Point 12848 CHFI BtuAHr-Ft2 135000n.

X Predicted by 1150000.

850000.

75MM8.

550000.

35080.

Correlation Achived without Detection 4

Predicted with Quality Linit

-. 12

-. 07

-.02

.03 Quality (Axial Location)

.08

.13 NRC Review Visit, Correlation Application at Qualities Below the Lower Quality Limit Page 6 of 9 A

FRAMATOME ANP

Critical Heat Flux versus Quality (Location)

Colunbia CHF Point 13188 CHF, tu/Hr-Ft2 135100M.

I 11500M.

950000.

75M0.

55M0.

350000.

~4..

4.-

N X

Predicted by Correlation U

Achieved without Detection Predicted with Quality Linit 7%.-

N..

~~~~~..

.5.8")

1 (126.0' (85.0")

(5

.I 6$"

Detection I

(id5.5")

(1i

)

12

_.07

-. 02

.03 Quality (Axial Location)

.08

.13 NRC Review Visit, Correlation Application at Qualities Below the Lower Quality Limit I

Page 70of9 FFRP AMATOME ANP

Increase in CHF Margin with Increase in Quality 35.0 28.0 x6; U

kr.U.

54)

U" to 21.0 14.0

  • Predicted by Correlation (0.987 2, 2.3 Slope)

+ Observed at Thernocouples without CH Detection (0.617 R2, 1.1 Slope)

N o

+~~~~~~~

/+~

+

7.0

+

I

+

I II i

0.0 0.0 3.0 6.0 9.0 12.0 Increase in Quality at CHP Calculation, x 15.0 NRC Review Visit, Correlation Application at Qualities Below the Lower Quality Limit A

Page8 of 9 FRAMATOME ANP

Figure 1 Radial Geometry Framatome AN? Test No. 49.0 Flow Area = 0.027944 Sqft Heated Area = 29.2515 Sqft 2.60r I

I iIII I

RN = Rod Number RPF = Rod Power Factor F4%oACDR NRC Review Visit, Correlation Application at Qualities Below the Lower Quality Limit A

Page 9 of 9 FRAMATOME ANP

Reload Analyses for CR-3 Cycle 14 Using the BHTP CHF Correlation General Analysis Process Impact of Utilizing the Conservative CHF Calculation Adjustment for Local Coolant Qualities Less than the Lower Quality Applicability Range Stated in the BHTP Topical Report Margin Remaining in the Analyses NRC Review Visit October 2003 Non-Proprietary NRC ReviewVisit BHTP Correlation at Low Qualifies, Analysis Process FRAMATOME ANP

I 

DNB Analysis Process

  • Set Plant Operating Conditions

-includes Design Peaking (1.800 Radial with a Symmetric 1.65 Axial Peak)

  • Set DNBR Criteria Basis

- CHF Limit (1.132 BHTP)

- Statistical Design Limit [

]

- Thermal Design Limit [

]

Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualities, Analysis Process A

FRAMATOME ANP

DNB Analysis Process

  • Develop DNB-based Pressure-Temperature Safety Limits

-Steady-state evaluation at the TDL

^ Generate Reactor Protection System MAP Limits

-Combinations of Radial & Axial Peaks with Equivalent MDNBR (TDL)

  • Evaluate Limiting DNB Events

- 1 Pump Coastdown

- 4 Pump Coastdown

- Locked Rotor

  • Generate Operating Limit MAPs

- Based on 4 Pump Coastdown (most limiting Condition I/II event)

Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualifies, Anaysis Process FRAMA TOME ANP

lo Thermal Design Limit Basis for CR-3 Cycle 14 Using the BHTP Correlation DNB Margin Within the Thermal Design Limit (TDL) for CR-3 Cycle 14 A

Non-Proprietary NRC Review Visit, BHTP Cofrelation at Low Qualities, Analysis Process FRAMATOME ANP

I The DNB-based Pressure Temperature Safety Limit Line has Margin to the Tech Spec Safety Limit Figure 2 Cycle 13-specific and Cycle 14-specific DNB-Based Safety Limit Lines Compared to the Conservative Tech Spec Safety Limit 2100 -

2050 - -- -----

~-

-r- -- -- - - - - - - - --

-T- -

m 11 l~~

~~~~~~

I I

I Ti 2000

~~ ~-r- - ------ ~~~

t~~~

,/~~

~~~~~~~~~I I

I I

//I 1950 ---

_ __nT mhUitS* _

_-/-

T------

I (Used I

I I

L thle~ar~b~tow I

g L

IOW

~~ l P~~~~~rq)\\I I

I I'l 1900 --------- ------

O 0

Cycl 4 Cydle 13-d) spedic*afety specificSaf 0

6 1850 --------- -

t UtUne imit mtne 1800 -----

/

1750 U

Umi n 590 595 600 605 610 615 620 Vessel Outlet Temperature, F A

FRAMATOME ANP Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualities, Analysis Process

The Variable Low Pressure Trip has Margin to the Tech Spec Safety Limit Cycle 14 Figure 1 Pressure-Temperature Trip Limits and the Tech Spec Safety Limit 2250 I

I I

II I

I I

I I

1g 2200 -

N

  • _nl

_Temerature p,

TechSpecTrip I

tt Ptintt 2100

_-----_-_ L I-

_I_-,--_--_-__

J _ _

I I

I I

I I

I I

I I

t I

I I

I

~~205O ~~~~ACCEPTALE I -

i----

rL 2 50 -

i-I OPERATON1 Variable Low Pressure Trip 2000-V NRC Review rt, BHTP orla u~1950 1900 Pressure Trip Tech Spec SafetyUnit 590 595 600 605 610 615 620 Vessel Outlet Temperature, F Non-Proprietary NRC Review Visit BHTP Correlation at Low Qualities, Analysis Process FAMTMAP

Example of an Axial Power Shape with the MDNBR Above the Elevation of the Lower Quality Limit Local Coolant Quality and Surface Heat Flux for the Low Pressure Point (1.65 Axial at 0.5 x/L) 0.10 0.6 0.005 - -- ----

e__s_______________3-0.5 0.4 3 0

I

,#f' B

LaCooant Quaty W D

-W

-. 05 - --------------- ---

t--

1-^I C

I I

0SurIce Heat Flux to 0.3bh 8 -0.1o --------------

0-t

-- r---

\\

T 3

U I

BTP Low Quality I

I

-t Au S

~~~~~~~~~~Ut of -0.130 t

-02p to 02----

8-0.15 IL1

1F<

I

~~~~~~~~~01

-0.20 ^

+-

F----------------

I--+--F--------

.1

-0.25

=,.,,,,,

m_

-0 0

20 40 60 80 100 120 140 160 180 Axial Location From Bottom of Fuel Assembly, in A

Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualifies, Analysis Pmcess FRAMATOME ANP

Example of an Axial Power Shape with the MDNBR Below the Elevation of the Lower Quality Limit Local Coolant Quality and Surface Heat Flux for the Low Pressure Point (1.90 Axial at 0.2 x/L) 0.10 I.

I I

0.05 0.00

-0.05 -

- -L --

--r ----

Limit of -0.130 r7-----r~~----r~8EtL 7 ~~------ -----------

I~~ ~

~

~

~~~~~~~~~~~~

I I/

I I,, ' ' IDC~~~~~~~*

________S_______,________~~~~~~~~~~

I N

________I___

/

________1,__

\\~~~~

_I________

l xs l

nz l~~~~~~~~~~I d'

'l.

z BI~~~~~~~~~~~~wIb I

R ',#

Llmitof-0.130

,>~~~~~~*

r I

I I

~

~

~

~

~~~~~~~~~~~~~I I

0.7 0.6 05 l

-0.10 sA Goolant Qality rfame Ht Flux I -- -- - - - - I~~~~~~~~~~~~~~~

.1 1

i-L I

3w

-I-0.4 0.3 1

0 0.2 w In 8

2 z

(D co=

1 3

-0.154

-0.20*

-0.25' 0.1 0

0 20 40 60 80 100 120 140 160 180 Axial Location From Bottom of Fuel Assembly, in A

FRAMATOME ANP Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualities, Analysis Process

Impact of Conservative Adjustment CR-3 Cycle 14 RPS MAPs for 4 Pump Operation (BHTP Correlation) 0

-u 1A FRAMATOME ANP Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualifies, Analysis Process

Impact of Conservative Adjustment CR-3 Cycle 14 Operating Limit MAPs (BHTP Correlation)

A Proprietary NRC Review Visit, BHTP Correlation at Low Qualifies, Analysis Process FRAMATOME ANP Non-

Areas of Margin in the CR-3 Cycle 14 Ai Thermal Design Limit, [

Final CR-3 Cycle 14 DNB Transition Core Penalty was only [

I ialysis I

Margin between the CR-3 Cycle 14-specific Safety Variable Low Pressure Trip [

I Limit and the Margin

[

by Conservative I

Treatment of Low Quality Limit in MAP space A

FRAMATOME ANP Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualifies, Analysis Process

Core Safety And Operating Limits Core Power Distribution Limit Process Maneuvering Analysis defines power distribution dependence on power level, burnup, regulating rod insertion, axial power shaping rod position,

& xenon distribution Margin to DNB is determined by comparison of augmented total peaking factor to DNB maximum allowable (MAP) limits Correlations of peaking margin to axial offset are generated to determine the core safety and operating limits Margin to peaking limits based on other criteria are evaluated to determine the limiting power distributions for the core LHR limit based on centerline fuel melt criterion LHR limit based on transient cladding strain criterion LHR limit based on ECCS criteria (LOCA evaluation)

Reactivity limits are also evaluated to determine regulating rod insertion limits

Non-Proprietary NRC Review Visit. BHTP Correlation at Low Qualifies, Analysis Process FRAMATOME ANP

CORE PROTECTION LIMITS RPS Safet Limits Centerline Fuel Melt: 22.1 kW/ft (Batch 16 U02 fuel rod)

RPS DNB Maximum Allowable Peaking (MAP) limits TCS kW/ft limits: 28.9 © 20 GWd/mtU & 20.3 © 65 GWd/mtU Core protection is provided by the Limiting Safety System Settings specified in the Tech Specs/COLR (RPS Power-Imbalance Trip)

Core Operational Limits LOCA LHR Limits as function of elevation & burnup IC DNB Maximum Allowable Peaking (MAP) limits 1%Ak/k Shutdown Margin limit 1%Ak/k (HZP) / 0.65%Ak/k (HFP) Ejected Rod Worth limit Core Protection is provided by the Limiting Conditions for Operation specified in the Tech Specs/COLR (Administrative operating alarms)

CFM, TCS, & LOCA LHR limits specific to Gd rods are also defined and used in the maneuvering analysis Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualifies, Analysis Process FRAMATOME ANP

Core Protection Imbalance LSSS & LCO Relationships Power (%)

Normal Operating Point RPS Protective Limit RPS Trip Setpoint (LSSS)

Tech Spec LCO Limit-D a i !

t

.: t ti00

! fit.1g<

£.

v-es Axial Imbalance (%)

LCO Alarm Setpoints, RPS Protective Limit, & RPS Trip Setpoint are specified in the COLR Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualities, Analysis Process FRAMATOME ANP

CR-3 Cy14 Maneuvering Analysis Limit Case Matrix Executing all cases would represent a total of 10,080 NEMO Power Distributions A

Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualities, Analysis Process FRAMATOME ANP

PEAKING MARGIN Peaking margin is calculated using the formula:

Margin 1

NEMO Peak

  • factors I Limit
  • 100%

Depending on the factors, the Limit may be either a Peaking limit or a linear heat rate limit

!oPrtNCIiTCloacQlAy sA A

Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualities, Analysis Process FRAMATOME ANP

Peaking Augmentation Factors -

DNB Margin

> Most Uncertainties are treated in the SCD Response Surface Model and are reflected in the DNB Maximum Allowable Peaking (MAP) limits

> Augmentation factors applied for specific effects:

  • Spacer Grid allowance
  • Quadrant Power Tilt allowance Notes:

-Other factors may be applied to accommodate effects of SS replacement rods, increased OTSG tube plugging levels, etc.

-The allowance for Quadrant Power Tilt is selected to provide a COLR limit of approximately 4% for steady-state tilt when thermal power > 60% RTP.

!o rraNIv/iBPn tt uAs sA A

Non-Proprietary NRC Reviw Visit BHTP Correlation at Low Qualites, Analysis Process FRAMATOME ANP

Target Margin A non-zero Target Margin is generally used to set the core offset limits Target Margin can account for:

Expanded shutdown flexibility Allowance for time-in-life effects Flexibility in the EOC Tavg reduction maneuver Allowance for other special operations Conservatism to offset increased peaking if the design analysis is completed Taret Margin may be burnup dependent and positive and negative offset limits core is redesigned after the may be different for Cycle 14 Target Margins A

FRAMATOME ANP Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualifies, Analysis Process

CR-3 Cyl4 CFM and RPS DNB Peaking Margins 500 EFPD 112%RTP Max Xenon Rod Index APSR (%WD)

% Axial Offset

% CFM Margin

% SSDNB Margin 300 0

1.47 43.9 (Nl, 27) 17.0 (Nll, 27) 300 50

-10.73 38.9 (M10, 5) 25.3 (M10, 5) 290 30

-11.33 37.2 (M10, 5) 25.5 (M10, 5) 275 0

-15.40 37.7 (M10, 5) 25.2 (Ml, 5) 275 50

-26.30 28.6 (M10, 5) 24.7 (Nll, 5) 250 0

-27.23 27.9 (M10, 5) 23.9 (Nll, 5) 250 10

-29.38 24.7 (M10, 5) 20.2 (Nll, 5) 250 30

-34.75 19.6 (M10, 5) 14.7 (Nll, 5) 250 50

-37.56 19.3 (M10, 5) 14.4 (N1, 5) 250 80

-33.86 22.2 (M10, 5) 17.2 (N11, 5) 250 100

-31.40 23.8 (M10, 5) 18.8 (N11 5) 225 0

-20.93 25.6 (M10, 5) 21.0 (Nll, 5) 225 50

-32.52 16.0 (M10, 5) 9.8 (Nll, 5)

A FRAMATOME ANP Non -Propri etal NRC Review Visit BHTP Correlation at Low Qualities, Analysis Process

t CR-3 Cyl4 RPS DNB Margin 500 EFPD 1120/oRTP R4P\\0O24363-00 CR-3 CXl4 t..Ntj er

.CoW-tionC-Check Cases Wm a 00.00 WD ndo f

MOum a 1e.ee % p Ir0 SI R3OMa 0g e

off. - 0.080 P.

off. - 2.00 Ranges for nmudd ft Woint.

O#Pd 0.0 s00.00 a offset 10.00 30.06 a ft 99.0e 101.00 a

se xx Z1 as Ofp 01.90 70.00 a offet 10.00 30.06 A

et

.00 101.00 a

svr 13 13 OR

.ftd 0.60 73.300 a osret 6.00 20.00 a

ft ".

101.00

&ammW eor guy N

R 11 a

z VI 0 @

LLLL1UJ.LJ

.I lJL..

A.

&2&l.

-40.0

-0.0

-20.0

-10.0 0.0 10.0 20.0 CealEm 1.1 412003

Offset, iKrzgi*

Tab Ida 30019 AIWULTSs Nov.

timit

0.

"ao.

Limit (

ual) _ 31.88 %

,fta. offsets y

0.000

  • x +

0.000 Pon. offsets y -

-0.477

  • X +

17.200 A

FRAMATOME ANP Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualities, Analysis Process

DNB Check Cases The limiting DNB peaking margins are confirmed by evaluation of DNB (physics) check cases Normalized axial power shapes for limiting power distributions are evaluated with LYNXT to determine actual DNBR and peaking margin Ensures that approximations inherent in use of DNB MAP limits are properly accounted for Margins determined by DNB check cases are typically within +

2% of the MAP based margin Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualifies, Analysis Process FRAMATOME ANP

RPS Offset Limits at 112% RTP EFPD CFM OS Umit CFM OS Umit SSDNB OS Limit SSDNB OS Limit

% Negative

% Positive

% Negative, 4RCP

% Positive, 4RCP 4

-59.6 56.2 33.2 50

-74.6 57.4 41.5 150

-67.2 61.7 37.5 250

-57.3 59.4 38.1 350

-49.5 55.8 30.5 450

-46.3 54.6 31.9 500

-45.0 54.6

-37.7 (-42.9)*

29.3 (31.8)*

550

-45.9 52.3 30.0 600

-47.9 54.6 31.0 653 G8 in

-49.1 56.5 30.7 653 G8 out

-47.6 56.5 33.9 685

-48.9 59.9 32.5 695

-48.5 58.2 33.6 703

-48.6 58.8 34.3 Notes:

  • Based on DNB Check Case results A

FRAMATOME ANP Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualifies, Analysis Process

RPS Power -

Imbalance -

Flow Trip Setpoints

> RPS offset limits are converted to imbalance and adjusted for uncertainty to generate RPS imbalance trip setpoints

> Error adjustment includes the contributions of:

  • Incore detector system measurement error Excore-to-incore detector calibration
  • Instrument string errors

> RPS error equation provides a 95%/95% one-sided statistical tolerance limit for the imbalance error as a function of:

Power

  • Imbalance
  • Gain Ucore (accounts for incore detector sensitivity depletion)

A Non-Proprietary NRC Review Visit, BHTP Correlation at Low Qualities, Analysis Process FRAMATOME ANP

CR-3 Cy14 LOCA and ICDNB Peaking Margins 500 EFPD 102%RTP Max Xenon Rod Index APSR (%WD)

% Axial Offset

% LOCA Margin

% ICDNB Margin 300 0

1.47 26.8 (N11, 28) 11.4 (Nil, 27) 300 50

-10.73 16.6 (M10, 5) 19.1 (M, 5) 290 30

-11.33 14.2 (M10, 5) 17.8 (M10, 5) 275 0

-15.40 14.9 (M10, 5) 18.4 (M10, 5) 275 50

-26.30 2.5 (M10, 5) 9.5 (Nil, 6) 250 0

-27.23 1.5 (M10, 5) 8.5 (Nil, 5) 250 10

-29.38

-2.8 (M10, 5) 4.1 (Nil, 5) 250 30

-34.75

-9.7 (M10, 5)

-2.6 (Nil, 5) 250 50

-37.56

-10.1 (M10, 5) 0.5 (Nil, 5) 250 80

-33.86

-6.2 (M10, 5) 2.3 (Nil, 5) 250 100

-31.40

-4.0 (M10, 5) 5.0 (Nil, 5)

Non-Proprietary No-rpi r

NRC Review Visit, BHTP Correlation at Low Qualifies, Analysis Process A

FRAMATOME ANP

IC4 NS CR-3 Cyl4 ICDNB Margin 500 EFPD 102%RTP 024363-00 CR-3 qX14 t46O c iaaes at veraOwe rmi m~~~~~~~rrt mrrrm199CW 2

Phll.

11111111 111101 1111

IIIIIIII 11§1w11w1
  • 11111 0
00.00 uVu nods Pow= - 10.00 e VP

\\

.W NAGr O

19m.

ff. w 0.0 Pe. etf. - 2.00

\\~~~~~~~~~~~~~~~~~m w

for ftwxd" e^.&

\\

C s~~~~~~~~~~~~~o SO j-rrrlTIT

~ TTTT1TI1 VTFTrTT!]

t~~iu~

Dot rK 0.00 2S9.00 a ft 0.99 Raau axfoZ !"1udd Fft ftnt~s fpd 0.00 703.00 a aff-et tp 99.00 101.00 a

&pi 0.00 703.00 offset t

39.00 101.00 S"r 1.01 0.00 De 0.00 om M

A R

0 za 30.00 IN 30.00 a

O00Y I

-S3.0

-40.0

-30.0

-20.0

-10.I CalaIM 1.1 */3003 Nereas job ZOO 32819 JM8ULT8:

Keg.

Limit

0.

Nov. offset:

y 0.000

  • X Pon.

offsets y

a

-0.530

  • X Pon. Limit (Manual) 16.86 %

+

0.000

+

10.940 A

FRAMATOME ANP Non-Proprietary NRC Review Visit, BHTP Corelation at Low Qualifies, Analysis Process

Axial Power Imbalance Error Adjusted Operating Lim It and Trip Setpoint Envelopes Four Pump Operation 0 EFPD to EOC 120 T

(-29.3, 108) 110

. (.16.6. 106.8)

}~~~~~-

-_0

/

(-17, 102) 100

(-22, 92)

So T (-33.7. 33.3)

(.37, B )

4 Restricted I° P-ratlon I

I Ii q.(-30, 80)

  • (-30, 60)

K:

Acc Op 80 4 70 4 60 4 (18.5, too)

(

106. 6

.I0

.)

(14,102)

(20, 92) ;11 (359 3)

(23, 80) hll (34. 74)

(30,60)

  • Acceptable Rtrce Operation Oprto S

This Fgure is l

i referred to by i

T.8. LCO 3.2.3.

eptable oration i

i 0.

I 40 4 so 4 30 4 20 4-Trip Setpoint Envelopes referred to by T.S. LCO 3.3.1

.L i

i i

10 D

u

-So

-40

-30

-20

-10 0

1 0 20 30 40 50 Axial Power Imbalance, %

l-

-Allowable Trip Stpolnt Envelope - -

- Operating Limit Envelope --

ActulTrip Setpoint Envelope I Non-Proprietary A

FRAMATOME ANP NRC Review Visit, BHTP Correlation at Low Qualities, Analysis Process

CR-3 Allowable Radial Peaking Limits for COLR FAdH *ARP [1 + (1/RH) *(1-P/PnJ1 ARP = Allowable Radial Peak P = ratio of Thermal Power/ Rated Thermal Power Pm = 1.0 for 4-RCP operation Pm = 0.75 for 3-RCP operation RH = 3.34 Axial Peak 1.1 1.1 1.1 1.1 1.3 1.3 1.3 1.3 1.5 1.5 1.5 1.5 Axial Location OM) 0.2 0.4 0.6 0.8 0.2 0.4 0.6 0.8 0.2 0.4 0.6 0.8 ARP 1.9254 1.9240 1.9229 1.9224 2.0858 2.0827 1.9721 1.8095 1.9034 1.9694 1.8275 1.6786 Axial Peak 1.7 1.7 1.7 1.7 1.9 1.9 1.9 1.9 Axial Location' (XIL) 0.2 0.4 0.6 0.8 0.2 0.4 0.6 0.8 ARP 1.6795 1.7622 1.6947 1.5617 1.5027 1.5812 1.5791 1.4620 Based on an active core height of 143.0 Inches; Lnear Interpolation between values Is acceptable.

A elation at Low Qualifies, Analysis Process FRAMATOME ANP Non-Proprietary NRC Review Visit, BHTP Corn Non-Proprietary NRC Review Visit, BHTP Com

Areas of Margin in the CR-3 Cycle 14 Analysis

> Thermal Design Limit, [

]

> Final CR-3 Cycle 14 DNB Transition Core Penalty was only [

]

> Margin between the CR-3 Cycle 14-specific Safety Limit and the Variable Low Pressure Trip [

]

> Margin by Conservative Treatment of Low Quality Limit in MAP space

> [

Uncommitted Target Margin preserved in Cycle 14-specific Maneuvering Analysis

> RPS Hardware Trip Setpoints are set to more restrictive values than the Cycle 14-specific allowable values [

I

> Axial Imbalance Operating Limit Setpoints are set to more restrictive values than the Cycle 14-specific allowable values [

A Non-Proprietary NRC Review Visit~ BHTP Correlation at Low Qualifies, Analysis Process FRAMATOME ANP

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