ML20199A204
| ML20199A204 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 10/20/1997 |
| From: | HOUSTON LIGHTING & POWER CO. |
| To: | |
| Shared Package | |
| ML20199A201 | List: |
| References | |
| NUDOCS 9711170099 | |
| Download: ML20199A204 (10) | |
Text
{{#Wiki_filter:__ - . -- ._ 4
. ._ _ ,. m a . . ,
The Light company SOUTII TEXAS PROJECT ELECTRIC GENERATING STATION ' UNIT 1 CYCLE' '8 ' CORE OPERATING LIMITS REPORT REVISION ~ l October 1997 a 9711170099 971105 PDR ADOCK 05000499 P PM Core Operating Limits Report Page i of 10 10/20/9't
\
*M ..-
Souill TtxAs UNIT I CYCtf 8 COut REVisl0N 1 OrrOBLR 1997 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report for STPEGS Unit 1 Cycle 8 has been prepared in accordance with the requirements of Technical Specification 6.9.1.6. The core operating limits have been developed using the NRC approved methodologies specified in Technical Specification 6.9.1.6. The Technical Specifications affected by this report are:
. I) 3/4.1.1.3 MODERATOR TEMPERATURE COEFFICIENT LIMITS '
' ' ~
, 2) ' 3/4.1.3.5' 'SliUTDOWN' ROD' INSERTION LIMITS
- 3) 3/4.1.3.6 CONTROL ROD INSERTION LIMITS . .
- 4) 3/4.2.1 AFD LIMITS
- 5) 3/4.2.2 IIEAT FLUX llOT CilANNEL FACTOR
- 6) 3/4.2.3 NUCLEAR ENTilALPY RISE IlOT CilANNEL FACTOR 2.0 OPERATING LIMITS The cycle specific parameter limits for the specifications listed in Section 1.0 are presented below.
2.1 MODERATOR TEMPERATURE COEFFICIENT (Si ulfication 3.1.1.3): 2.1.1 The BOL, ARO, MTC shall be less positive than the limits shown in Figure 1. 4 2.1.2 The EOL, ARO, llFP, MTC shall be less negative than -6.12 x 10 Ak/k/*F. 2.1.3 The 300 ppm, ARO, liFP, MTC shall be less negative thaa 5.22 x ", Ak/k/'F (300 ppm Surveillance Limit). where: BOL stands for Beginning-of Cycle Life, EOL stands for End-of-Cycle Life, ARO stands for All Rods Out, liFP stands for llot Full Power (100% RATED TilERMAL POWER), and ilFP vessel average temperature 5 589 3F. Core Operating Limits Repon Page 2 ef 10 10/20/97
I
*M. .
Soutti Tf.XAs UNtr I CYCtE 8 COLR REVtslON i OCTOBER 1997 2.2 ROD INSERTION LIhtITS (Sgwification 3.1.3.5 and 3.1.3.6)! 2.2.1 All banks shall have the same Full Out Position (FOP) of at least 249 steps withdrawn f but not exceeding 259 steps withdrawn. 2.2.2 The Control Banks shall be limited in physical insertion as specified in Figure 2. 2.2.3 Individual Shutdown bank rods are fully withdrawn when the Bank Demand Indication is at the FOP and the Rod Group ileight Limiting Condition for Operation is satisfied (T.S. 3.1.3.1).
- 2.3,. AXI Al, FLUX DIFFERENCE (Specification 3.2.1): ,
2.3.1 AFD limits as required by Technical Specification 3.2.1 are determined by CAOC Operations with an AFD target band of +3,12%. 2.3.2' The AFD shall be maintained within the ACCEPTABLE OPERATION portion of Figure 3, as required by Technical Specifications.
' 2.4 JIEAT 11UX llOT CHANNEL FACTOlt (Specification 3.2.2): .
~
RTP = 2.55. 2.4.1 Fq 2.4.2 K(Z) is provided na Figure 4. 2.4.3 The Fay limits for RATED TI-lERh1AL POWER (F RTP) xy within specific core planes shall be: 2.4.3.1 less than or equal to 2.000 for cycle burnups from- BOC to 8.000 h1WD/h1TU and less than 1.903 for cycle burnups from 8.000 htWD/htTU to EOC for all core planes containing Bank *D" control rods, and 2.4.3.2 less than or equal to the appropriate core height-dependent value from Table i for all unrodded core planes. 2,4.3.3 PF,y = 0.2. These Faylimits were used to confirm that the heat liux hot channel factor F n (z) will be limited by Technical Specification 3.2.2 assuming the most limiting axial power ; distributions expected to result for the insertion and removal of Control Banks C and D during operation, including the accompanying variations in the axial xenon and power distributions, as described in WCAP 8385. Therefore, these F,y limits provide assurr.nce Core Operating Limits Report Page 3 of 10_ 10/20 S 7
._ ,~--y-_- , _ - - - _ . - - y-rn--
t
*M .
SOUTH texas UNIT 1 CYCLE 8 COLR REVis10N 1 OC10llLR 1997 ti.it the initial conditions assumed in the LOCA analysis are met, along with the ECCS acceptance criteria of 10 CFR 50.46. Also note that the rodded arxl unrodded F,y limits have been reduced by the L(Z) penalty, This penalty should therefore not be applied to measured F,y values being compared with these limits. 2.5 ENTHAl.PY RISE HOT CHANNEL FACTOR (Specification 3.2.3)t
. 4 o ,
Standar'd Fuel. VANTAGE SH~or VANTAGE + Fuel , 2.5.1 IgnRTP . g ,49, p;g RTP = 1.557. 2.5.2 - PF 3 n = 0.3. PFan = 0.3. 3,0 REFERENCES 3.1 - Letter from J. P. Sechrist (Westinghouse) to Dave llopper,(HL&P), " Unit 1 Cycle 8 r.nd Unit 2
- Cycle 6 Revised Core Operating Limits' Reports." 97TG.G 0101 (ST UB-NOC 1764),
October 20, 1997. - 3.2 NUREG 1346. Technical Specifications, South Texas Project Unit Nos. I and 2. l 3.3 Letter from blary Ann Sinwell (Westinghouse) to D. A. Leazar (lilAP), " Accumulator Water JCO." ST WN.IIS 940275, August 9,1994. :
'I I
Core Operating Limits Regn Page 4 or 10 10/20'97 l b ..+r, - -. . ~ .. y w .m % ~.- w...--,,,-- . c-.__-t,,,,,m.. ,,-~ - m.. _ , , _ _..co_ r..._-,....,----,,-.-,-,,--w .---..,---m,--,,,.._.
*M .
Sount T1.XAs UNfY l CYCG 8 cot.R RINISION 1 OCloniin 1997 Figure 1 MTC serms l'ower inel 7.0 t..op.. ,
~ .
,.,mq.p.,.7,4g.y . ..
6.0 ; UNACCEPTABLE OPERATION
. .z . s. . _, , , , , , _
' - L
; 4;lh% j ._ q ,5?;..y y* ./ G ;; h p f y Q p: ;.j < ' '
*Of .a
-s y e 4
L 'm?' *I[jfo\y;
. , ,s,
~,
_ f ' e. , f.,*/8'*tdl>Wf,%e'wf,ki$7, 3 i, -> . . . # :
%;f ' $**+:.s[ G ,j '
- g g j '; <. p;. yffl$}+4.
s kn %';t- y , 5.0 -
~
.,,w,..
.,. ~. .
. ,~....,.u.
~ . ..
w ,. m- . . . ..
.u m .. .
I dVtO .,., 4.0 : 7(*ig.4...- l+/ ,;
,2;;cp.e.
, e
. .e. v , .r hcc.:.
3.0 . M m;: b w.g,
..: w
,4 : .
2.0 .. -,-F.. (J ; o H n\ - ' ACCEPTABLE OPERATION 2 ' ' 1.0 0.0 1.0 2.0 3.0 0.0 20.0 40.0 60.0 80.0 100.0 R-3lative Power (%) Core Operating Limits Report Page 5 of 10 10/20,'97
1 i
- SOUTH texas Umi 1.CyctI 8 Cot.a Rtvi$10N 1 OCToutR 1997
- . t Figure 2
[ Contivl Rod Irtwrtion Lituits' Venus Power inel ; i i tas,ases. tan st., overl., ! 4:3, s13 1:e st., w.ete, ase , ,e ist.assii tie st., overl., . r i i . r ist,assi 116 st , w .ete, > r i
.r r i cao,astie sta st., w .elee -
-r 34,
>r tie,assis sta st., w rte, i e ste assie tan st., *.rt.,
> [i u na i, ; i
, / tre,astis tse st. , overt., .
r , (??.assi 4te et., w .et.,
- saa j 2 r
471,assis its st., w. eta,
,r 2 r
its.astii 114 et., wort.a r >
, .. . r tis,asesi sta es., ov.et., !
300 = H .gj)[,, 2 2 r 2 F f
,sie 1
[ 48 H J i f , l e A t A 160 ' 3 1 s
~
8 f ilWant e i j f J 8 f 1
, g 140 ; e is f #
l 230 r r o
; p i }
}
f f f ~ 100 ; y E J f J f I WEB D I J f 90 , i ( >
/ f !
so d-{o ~sU f [ r I r et r
, r
,r 30 , r r
2 r i ... 0 2 r i d.je?.,J 0 to 20 30 40 s0 de to se to 100 RSIA?!VE tm 4) 1 I Control llank A is already withdrawn to Full Out Position. Core Operating L.imits Report' Page 6 of 10 10/20/97
+w -- ,.,,.---,y, my-- y- -
- , , .-,--,,--w,, , , . - ,--r-r--- ,-v. ,-.,,-r-v, _ , _ , --a,-,-v.~ +,,,,,v ee- - w --- ,---
- Soutil TI:xAs UNIT I Cyctri 8 COLR llEVISION I OCTOBER 1997 Figure 3 All) Limits sersus Ratal %mnal l'ower l'
'2; !
100
. I
=
l-11;90 tt,90 UNACCEPTA8LE OPERAfl0N \ UNACCEPTAB.I
/ 3 OPERAftCN -
80 '
/ \
( 5
! \
3 '60 ! \ 3 / \
~
I
/ ACCEPTABLE 3 OPERAT10N -
] -31.50 , 31,5o 40 20 .
l 0
-50 -40 -30 -20 -10 0 to 20 30 40 50 Flus 01fferenes(&l).5 i
Core Operating Limits Repor: Page 7 of 10 10/20!97
]
*M: .
SouTII TEXAS UNIT l CYCLE 8 COLR REVISION 1 OCTOBER 1997 Figure 4 K(Z) - Nonnallici F n(Z) versus Core lleisht 1.2 - i j - e0.. f 0.6 ; Core Elevation FQ K(Z i 0' 0.0 ft 2.55 1.0) 7.0 ft 2.55 1.0 14.0 ft 2.359 0.925 I0.2 0 0.0 7.0 14.0 - CORE HEIGHT (FT) l l Core Operating Umits Rtport Page 8 of 10 10/20'97
~ , , p .m- . ~ w r. , r-, - - , - - , _ - --
*N
, eesy:
SOUTH TEXAS UNIT I DYCLE 8 COLR REVI$10N I OCTOBER 1997 Table 1 (Part I of 2)
- Unreddai Fxy for Each Core lleight For Cyle Burnups from BOC to 8,000 MWD /MTU Core lleight Unrodded Core Ileight Untodded (Ft.) Fxy (Ft.) Fxy 14.0 M 3.294 6.800 1.838 13.800 3.034 6.600 1.833 13.600- 2.773 6.400 1.823
-13.400 2.513 6.200 1.815 13.200 2.301- 6.000 1.807 13.006 2.145 5.800 1.802 ,
12.800 2.066 5.600 1.801 12.600 2.007 5.400 1.800 12.400 1.%7 5.200 1.801 12.200 1.942 5.000 1.803 12.000 1.925 4.800 1.801 11.800 1.915 4.600 1.800 11.600 1.913 4.400 1.802 n i1.400 1.892 4.200 1.8% h 11.200 1.863 4.000 1.812 11.000 1.836 3.800 1.819 10.800 1.824 3.600 1.828 10.600 1.815 3.400 1.845 10.400 1.828 3.200 1.874 ., 10.200 1.828 3.000 1.887 10.000 1.829 2.800 1.885 9.800 1.831 2.600 1.869 9.600 1.826 2.400 1.849 9.400 1.815 2.200 1.830 9.200 1.801 2.000 1.828 9.000 1.790 1.800 1.834 8.800 1.780 1.600 1,852 8.600 1.776 1.400 1.870 8.400 1.774 1.200 1.901 , 8.200 1.773 1.000 1.948 8.000 1,773 0,800 2.067 . 7.800 1.786 0.600 2.264
~ 7.600 1.800 0.400 2.503 7.400- 1.814 0.200 2.742 7.200 1.827 0.000 2.981 7.000 1.836 Note: The above Fxy limits hane been reduced by the L(Z) penahy. This penalty should therefore not be applied to measured Fsy tatues being compared with these limits.
- Core Operating Limits Report Page 9 of to 10/20/97
. ~ _ . .- - .- . _ _ . . _ - -. - . ~ . . - -
*M:. Soutit TEXAS UNIT I CYCLE 8 COLR REVISION l GCTOBER 1997 a=
Table 1 (Part 2 of 2) Unrodded Fxy for Each Core licight For C3cle Bunmps from 8,000 MWD /MTU to EOC Core lleight Unrodded Core lleight Unrodded (Ft.) Fxy _ (Ft.) Fxy 14.000 4.072 6.800 2.106 13.800 3.583 6.600 2.106 13.600 3.094 6.400 2.103 13.400 2.605 6.200 2.098 13.200 2.269 6.000- 2.090 13.000 2.114 5.800 2.081 12.800 2.073 5.600 2.074 12.600 2.032 5.400 2.071 12.400 2.007 5.200 2.071 12.200 1.976 5.000 2.065 12.000 1.956 4.800 2.(14 11.800 1.940 4.600 2.034 11.600 1.935 4.400 2.014 11.400 1.926 4.200 1.495 11.200 1.909 4.000 1.980 11.000 1.895 3.800 1.966 r 10.800 1.898 3.600 1.b3 10.600 1.904 3.400 1.938 10.400 1.903 3.200 1.921 10.200 1.907 3.000 1.902 10.000 1.914 2.800 1.883 9.800 1.925 2.600 1.869 9.600 1.935 2.400 1.859 9.400 1.943 2.200 1.847 9.200 - 1.951 2.000 1.822 9.000 1.962 1.800 1.794 8.800 1.974 1.600 1.795 8.600 1.986 1.400 1.795 8.400 1.988 1.200 1.799 8.200 1.989 1.000 1.817 8.000 1.991 0.800 1.905 7.800 2.007 0.600 2.I42 - 7.600 2.023 0.400 2.458 7.400 2.052 0.200 2.775 7.200 2.077 0.000 2.091 7.000 2.095 Note: The abose Fay limits hase been reduced by the L(Z) penalty. This penalty should therefore not be applied to measured Fay values being compared with these limits. Core Operating Limits Repon Page 10 of 10 1040'97}}