ML18036A820
| ML18036A820 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 08/20/1992 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML18036A818 | List: |
| References | |
| TVA-COLR, TVA-COLR--R-DRF, TVA-COLR-000, TVA-COLR-000-R00-DRF, NUDOCS 9208280170 | |
| Download: ML18036A820 (14) | |
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ENCLOSURE 4 DRAFT CORE OPERATING LIMITSREPORT BROWNS FERRY NUCLEAR PLANT (TVABFN TS 309) 9208280170 920820 PDR ADOCK 05000259 P
J
'4
TVA-COLR-000 Rev.
0 Brovns Ferry Nuclear Plant Unit 2, Cycle 6
CORE OPERATING LIMITS REPORT TENNESSEE VALLEY AUTHORITY
e l.
INTRODUCTION This Core Opcrating Limits Report for Browns Ferry Unit 2, Cycle 6 is prepared in accordance with the requirements of Browns Ferry Technical Specification 6.9.1.7.
The core operating limits presented here were developed using NRC-approved methods (Reference 1).
Results from the reload analyses for Browns Ferry Unit 2, Cycle 6 are documented in Reference 2.
The Cycle 6 loading includes four Westinghouse QUAD+ demonstration assemblies loaded in peripheral locations.
These locations satisfy the criteria specified in References 3 and 4.
Evaluations performed by Westinghouse (Reference
- 4) show that the results of licensing analyses for the lead P8 x 8R fuel assembly bound those for the QUAD+ demonstration assemblies.
Cycle specific analyses performed by TVA confirm this conclusion.
The following cycle-specific core operating limits are included in this report.
a.
Average Planar Linear Heat Generation Rate (APLHGR) Limit (Technical Specification 3.5.I) b.
Linear Heat Generation Rate (LHGR) Limit (Technical Specification 3.5.J) c.
Minimum Critical Power Ratio Operating Limit (OLMCPR) (Technical Specification 3.5.K/4.5.K) 2.
APLHGR LIMIT TECHNICAL SPECIFICATION 3.5.I The APLHGR limit for each fuel type as a function of exposure is shown in Tables 1-4.
3.
LHGR LIMIT TECHNICAL SPECIFICATION 3.5.J The LHGR limit is 13.4 kW/ft.
,(
1
e 4.
OLMCPR TEC ICAL SPECIFICATION K 4 5 K a.
The OLMCPR is equal to the MCPR limit a
, whichever is greater.
t rated flow and rated power shown in Figure 1 multiplied by the Kf shown in Figure 2, where
+=0or fae LB A LB gA = 0.90 sec (Specification 3.3.C.l scram time limit to 20% insertion from fully withdrawn) 1 N
2 2B = 0.710+1
~ 65 (0 ~ 053) n gave
= i = 1 n = number of surveillance rod tests performed to date in cycle (including BOC test).
i = Scram time to 20% insertion from fully withdrawn of the i rod.
N = total number of active rods measured in Specification 4.3.C.1 at BOC.
b.
For the performance of Surveillance Requirement 4 S.K.2.a (prior to initial scram time measurements for the cycle,
= 1.0.
c.
For the performance of Surveillance Requirement 4.5.K.2.b, shall be determined in accordance with 4.a above.
5.
REFERENCES 1.
NEDE-24011-P-A, "General Electric Standard Application for Reactor Fuel" 2.
TVA-RLR-002, Rev. 2, "Reload Licensing Report for Browns Ferry Unit 2, Cycle 6," July 1988 3.
Safety Evaluation by the office of Nuclear Reactor Regulation Supporting Amendment No.
125 to Facility Operating License No. DPR-52, Tennessee Valley Authority, Browns Ferry Nuclear Power Plant, Unit 2, Docket No.
50-260.
4.
WCAP-101507 dated March 1984, "QUAD+ Demonstration Assembly Report,"
Westinghouse Electric Corporation
0
Table 1
APLHGR VERSUS AVERAGE PLANAR EXPOSURE Fuel Type:
P8DRB284L QUAD+
Average Planar Exposure MWd/t APLHGR
~kW ft 200 11.2 1,000 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000 11.3 11.8 12.0 12.0 11.8 11.2 10.8 10.2 9.5 8.8 I
I Table 2
~kWIft APLHGR VERSUS AVERAGE PLANAR EXPOSURE Fuel Type:
P8DRB265H Average Planar Exposure 200 11.5 1,000 5,000 10,000 15,000 20,000 25,000 30,000 35,000
,40,000 11.6 11.9 12.1 12.1 11.9 11.3 10.7 10.2 9.6
Table 3
APLHGR VERSUS AVERAGE PLANAR EXPOSURE Fuel Type:
P8DRB284Z Average Planar APLHGR
~kW ft 200 1,000 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000 11.2 11.2 11.7 12.0 12.0 11.8 11.1 10.4 9.8 9.1 8.5 D
Table 4
APLHGR VERSUS AVERAGE PLANAR EXPOSURE Fuel Type:
8DRB284L Average Planar APLHGR
~kW/ft 200 1,000 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 11.2 11.3 11.8 12.0 12.0 11.8 11.2 10.8 10.2 9.5
- a FIGURE 1
MCPR LIMIT AT RATED POWER AND RATED FLOW 1.36 1.35 1.34 1.33 1.32 A
1.31 1.30
'.26 M
lx7 1ZB
. 27' 0. 0')
.27, 0.11 la3 0
QQ 0.3 0.4 0.5 TAU 0.6 0.7
FIGURE 2 1.4 Kf FACTOR 1.3 AUTOMATlCFLOW CONTROL 1.0 MANUAl FLOW CONTROL Scoop-Tube Set-Point Calibration position such that Flowmax -102.5%
107.0%
112.0%
117.0%
30 40 50 60 70 80 90 100*
'OK 1.0 for core flow p 100%
f CORE FLOW,%
C