ML20064L878
| ML20064L878 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 03/15/1994 |
| From: | Carmody J, Olson A, Tusar J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| Shared Package | |
| ML20064L871 | List: |
| References | |
| NUDOCS 9403280017 | |
| Download: ML20064L878 (11) | |
Text
.
6 PECO Fuel and Services Section
' PECO-COLR PB2R9
' PB2R9 Core Operating Umns Report Pag 91, Rev. 2 CORE OPERATING LIMITS REPORT FOR PEACH BOTTOM UNIT 2 RELOAD 9, CYCLE 10 Prepared By:
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. Date:
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//y VJ. J. Tusar Engineer
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Reviewed By:
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A. M. Olson Engineer
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Approved By:
. J. M. Carmody
- Manager, Nuclear Design Branch 9403280017 940318 PDR A D O C K 0 5 0 0 0 2 7 7.':t
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l PECO Fuel and Services Section PECO-COLR-PB2R9
. PS2R9 Core Operating Limits Report Page 2, Rev. 2 i
s LIST OF EFFECTIVE PAGES i
i Page{s)
Revision i
I 6-12, 13-18, 20-21 0
1 1 -5,12a,12b,17,19, 20, 22 2
l PECO Fuel and Services Section PECO-col.R P82R9 PB2R9 Core Operating Limits Report Page 3, Rev. 2 1
INTRODUCTION AND
SUMMARY
1 This report provides the cycle-specific parameter limits for: Maximum Average-Planar l Linear Heat Generation Rate (MAPLHGR); Minimum Critical Power Ratio (MCPR); Flow Adjustment Factor (K,); Linear Heat Generation Rate (LHGR); and Rod Block Monitor (RBM) flow biased upscale setpoints for Peach Bottom Atomic Power Station (PBAPS) Unit 2, Cycle 10, Reload 9.
These values have been determined using NRC-approved methodology and are established such that all applicable limits of the plant safety analysis are met.
This report is submitted in accordance with Technical Specification 6.9.1.e of Reference 1.
Preparation of this report was performed in accordance with PECO Procedure FM-105,
" Reload Licensing Documentation".
MAPLHGR LIMITS I
The limiting MAPLHGR values for the most limiting lattice (excluding natural uranium) of I each fuel type as a function of average planar exposure are provided in Figures 1 through 8.
I These figures are used when hand calculations are required as specified in Technical l Specification 3.5.1.
The ABB Atom, Inc. (ABB) and Siemens Power Corporation (SPC) l Qualification Fuel Bundles (QFBs) were previously monitored to the GE98-P8DWB320 (fuel type i GE8x8NB) MAPLHGR liraits (see Revision 0 of the PB2R9 COLR). The MAPLHGR limits for the i ABB QFB have been increased (i.e., relaxed) by 7% while the SPC OFB limits have.been I increased from 2% to 5% (exposure dependent). These changes have been made in accordance I with the information provided in References 5 and 6 and are intended to meet a commitment to I the NRC that the OFBs will not lead the core with respect to thermallimits (Reference 9). The i ABB and SPC MAPLHGR limits are illustrated in Figures 7a and 7b, respectively.
I The reduction factors for use during single recirculation loop operation are given in Table l
- 1. The reduction factor for the ABB QFBs was provided in Reference 5 as 0.68. Due to a very I conservative evaluation of single loop operation, ABB required that the reduction factor be I reduced proportionately with the 7% increase in the MAPLHGR limit (l.c.,0.73/1.07) to maintain I margins. The reduction factor for the Reload 8 GE98 bund!es and the SPC QFBs is 0.73 as I documented in References 2 and 4, respectively.
MCPR LIMITS The MCPR values for use in Technical Specification 3.5.K for each fuel type are given in Figures 9 through 12 and in Table 2. The top portion of Table 2 is used when the requirement l of 4.5.K.2.a is mot. When this requirement cannot be met, the Operating Limit MCPR values as I a function of Tau are provided in Figures 9 through 12. When the surveillance requirement of specification 4.5.K.2 is not performed, the bottom portion of Table 2 is used. The K, core flow i
adjustment factor for use in Technical Specification 3.5.K is given in Figure 13.
l The MCPR values shown in Figures 9 through 12 and Table 2 are the bounding values fcr the applicable fuel types which may be used in any of the following operating domains (or intermediate conditions) on the power / flow map:
PECO Fuel and Services Section PECO-COLR-PB2R9 ~
-PB2R9 Core Operating Urnits Report
- Page 4 Rev.2 Standard (rated power and core flow)
Extended Load Line (down to 87% of rated core flow)
Increased Core Flow (up to 105% of rated core flow)
EOC Feedwater Temperature Reduction (maximum 48 *F delta T)
Power Coastdown (up to 110% of rated core flow) i Note in these figures that the term EOC (End of-Cycle) refers to the cycle exposure at which I operation at " rated conditions" is no longer possible (i.e., the cycle exposure at which cycle I extension begins) as assumed during the cycle-specific reload licensing (Reference 2).
The MCPR limits to be used during cycle extension (Increased Core Flow (ICF), Final Feedwater Temperature Reduction and Power Coastdown) following EOC are the EOC-2000 mwd /ST to EOC limits.
The MCPR values shown in Figure 9 and Table 2 conservatively bound and are applicable to the following fuel types: BP8x8R, LTA310, GE8x8EB and GE8x8NB. Of the four fuel types, LTA310 is the most limiting for MCPR and has been conservatively selected as the limit for all four fuel types. The MCPR values for the other three fuel types fall on or below the limit shown in Figure 9.
I Figure 12 provides the Operating Limit MCPRs (OLMCPRs) for the GE11 fuel (F 9 HUB 334 I and LUA307) in Cycle 10. These limits have changed (decreased) from COLR, Raision 0, to i partially offset the penalties associated with asymmetric control rod patterns from EOC-2000 l mwd!ST to EOC. Note that the current failed fuellocations are (14,39), (46,39),(46,31), (54,31)
I and (30,23). Figure 12 provides GE11 OLMCPRs for operation with no restrictions on control rod I patterns. The OLMCPR decrease is based on reduced conservatism associated with the use of I General Electric's latest NRC approved analytical methods for reload licensing (ODYNM09V I. pressurization event code) and the updated Cycle 10 operating history. PBAPS Unit 2 Cycle 10 I was originally licensed with the ODYNK03V code and a conservative projection of Cycle 10 I operation (e.g., power shape).
ROD BLOCK MONITOR SETPOINTS The N value for the RBM flow bla. sed upscale setpoints for use in Technical Specification 3.2.C is given in Table 3.
. LINEAR HEAT GENERATION RATES The LHGR value for use in Technical Specification 3.5.J for each fuel type is given in Table 4. The ABB and SPC OFBs were previously monitored conservatively to the Reload 8 GE98 (GE8x8NB) LHGR limits (see Revision 0 of the PB2R9 COLR). The LHGR limit for the ABB OFBs has been conservatively set at 16.3 kW/ft based on data provided in Reference 3.
The LHGR limit for the SPC OFBs has been conservatively increased to 14.7 kW/ft based on the information provided in Reference 6.
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- PECO Fuel and Services Sectan.
PECO-COLR PB2R9 -
PB2R9 Core Operating Limits Report Page 5, Rev. 2 OUALIFICATION FUEL BUNDLES I
- PBAPS Unit 2 Cycle 10 will be the second cycle of irradiation for the QFBs. Four OFBs I reside in the core from each of the following fuel vendors: ABB, GE and SPC. The 1 corresponding QFB fuel types are as follows: SVEA-96 from ABB, GE11 from GE and 9x9-9X+
l frorn SPC. The therrnal limits for the ABB and SPC OFBs are based on data provided in l References 3 through 6.
Specific values for the GE11 QFBs (LUA307) are provided in i References 2 and 7. The GE11 QFBs (LUA307) and the GE11 Reload 9 bundles (P9 HUB 334) have the same MCPR values throughout Cycle 10.
REFERENCES
- 1) " Technical Specifications and Bases for Peach Bottom Atomic Power Station Unit 2",
Docket No. 50-277 Appendix A to License No. DPR 44.
- 2) " Supplemental Reload Licensing Report for Peach Bottom Atomic Power Station Unit 2, Reload 9, cycle 10", General Electric Company Document No. 23A7188, Revision 0, September 1992.
- 3) ABB Atom Report BR 90-004," Supplemental Lead Fuel Assembly Licensing Report, SVEA-96 LFAs for Peach Bottom 2, Summary", October 1990.
- 4) ANF-90-133(P), Revision 2, " Peach Bottom 9x9 9X+ Qualification Fuel Assembly Safety Analysis Report", August 1992.
I
- 5) Letter from D. Ebeling.Koning to A. M. Olson," Revised Peach Bottom-2 SVEA-96 Lead i
i Fuel Assembly (LFA) LOCA Limits", dated February 14,1994.
I
- 6) Letter from H. G. Shaw to H. J. Diamond," Relaxation of LHGR and MAPLHGR Limits i for the 9x9 9X+ Qualification Fuel Assembly for Peach Bottom Unit 2", dated February 11,1994.
I
- 7) " Loss of-Coolant Accident Analysis for Peach Bottom Atomic Power Station Unit 2",
1 NEDE 24081 P-2, December 177 (as amended).
I
- 8) " Lattice-Specific MAPLHGR Report for Peach Bottorn Atomic Power Station Unit 2 l Reload 9 Cycle 10", General Electric Company Document No. 23A7188AA, Revision 0, 1 September 1992.
I
- 9) Letter from G. A. Hunger, Jr., to the U. S. Nuclear Regulatory Commission,." Peach I Bottom Atomic Power Station, Unit 2 Qualification Fuel Bundles in Operating Cycle 9", dated I November 21,1990.
I
- 10) Letter from G. R. Hull to H. J. Diamond, " Peach Bottom 2 Cycle 10 Stub Rod l Analysis", dated March 10,1994.
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-PECO Fuel and Services Section PECO-COLR-P82R9
' PB2R9 Coro Operating Umits Report '
Page 12a, Rev. 2 -
FIGURE 7a MAXIMUM AVERAGE PLANAR LINEAR HEAT GENERATION RATE (MAPLHGR) VERSUS AVERAGE PLANAR EXPOSURE FUEL TYPE ABB QFB (SVEA-96) l E
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- 5 20 25 30 13 40 45 30 53 AVEAAGE PLMMH EXPOSUAE (G40/ST)
W Avg Plan Avg Plan Avg Plan Exposure MAPLHGR Exposure MAPLHGR
- Exposure MAPLHGR (GWd/ST)
[kW/ft)
(GWd/ST)
(kW/ft)
(GWd/ST)
(kW/ft) 0.0 11.58 6.0 12.96 15.0 13.56 1.0 11.72 7.0 13.12 20.0 12.96 2.0 11.91 8.0 13.29 25.0 12.21' 3.0 12.13 9.0 13.44 35.0 10.89 4.0 '
12.39 10.0 13.60
'45.0 9.52 5.0 12.66 12.5 13.75 51.08 6.31
. PECO Fu I and SorWces Soctbn PECO-COLR P82R9 PB2R9 Core Operating Limds Report Page 12b, Rev. 2 FIGURE 7b MAXIMUM AVERAGE PLANAR LINEAR HEAT GENERATION RATE (MAPLHGR) VERSUS AVERAGE PLANAR EXPOSURE FUEL TYPE SPC OFB (9x9-9X+)
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Avg Plan Avg Plan Avg Plan i
Exposuro MAPLHGR Exposure MAPLNGR Exposure MAPLHGR
{GWd/ST)
(kW/ft1 (GWd/ST)
(kW/ft1 (GWd/ST)
(kW/ft) 0.0 11.36 6.0 12.72 15.0 13.30 1.0 11.50 7.0 12.87 20.0 12.59 2.0 11.69 8.0 13.04 25.0 11.70 3.0 11.91 9.0 13.19 35.0 10.38 J
i 4.0 12.16 10.0 13.35 45.0 9.08 5.0 12.42 12.5 13.49 51.08 6.02
PECD Fuel and Services Section PECO-001.R PB2R9 PE}2R9 Core Operating Umits Report -
Page 17, Rev. 2 FIGURE 12 MCPR OPERATING LIMIT VERSUS TAU FUEL TYPES: P9 HUB 334 (GE11), LUA307 1.50 1.50 THIS FIGURE IS REFERRED TO BY TECHNICAL SPEClFICATION 3.5.K 1,40 1.48 1
1.4G 1.46 4.44 7-i.44
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(Tau) i i
Note: The limits are bounding for operating conditions as described on pages 3 and 4, MCPR Limits Section.
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- PECO Fuel and Services Sectbn
' PECO-COLR PB2R9 PB2R9 Core Operating Umits Report Page 19, Rev. 2 TABLE 1 SINGLE LOOP REDUCTION FACTORS FUEL TYPE REDUCTION FACTOR BP8x8R 0.79 GE8x8E8 0.73 LTA310 0.73 GE8x8NB 0.73 LUA307 0.73 GE11 0.73 I
ABB QFB (SVEA-96) 0.68 i
0.73
O PECO Fuel Management Section PECO-COLR-PB2R9 PB2R9 Core Operating Umits Report Page 20, Rev. 2
+
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TABLE 2 OPERATING LIMIT MCPR VALUES
- FOR VARIOUS CORE EXPOSURES BOUNDING MCPR OPERATING LIMITS" FUEL TYPE FOR INCREMENTAL CYCLE CORE AVERAGE EXPOSURE I
BOC TO 2000 mwd /ST 2000 mwd /ST BEFORE EOC BEFORE EOC TO EOC Technical Specification 4 5 K 2 is mot BP8x8R 1.34 1.34
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GE8x8E8 1.34 1.34 LTA310 1.34 1.34 GE8x8NB 1.34 1.34 ABB QFB 1.42 1.43 SPC OFB 1.40 1.41 i
l LUA307 1.35 1.36 l
GE11 1.35 1.36 Technical Specification 4 5 K 2 is not performed BP8x8R 1.36 1.36 GE8x8EB 1.36 1.36 LTA310 1.36 1.36 GE8x8NB 1.36 1.36 ABB QFB 1.52 1.49 SPC OFB 1.4'7 1.45 l
LUA307 1.40 1,44 l
GE11 1.40 1.44 I
These vatuos shall be increased by 0 01 for single loop operation l " App licab!s for operating conditions on the power / flow map as described on pages 3 and 4. MCPR Umits Section.
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PECO Fuel and Services Section PECO COLR P82R9 P82R9 Core Operating Umits Report Page 22, Rev. 2 TABLE 4 DESIGN LINEAR HEAT GENERATION RATE LIMITS FUEL TYPE LHGR LIMIT BP8x8R 13.4 kW/ft GE8x8E8 14.4 kW/ft LTA310 14.4 kW/ft GE8x8NB 14.4 kW/ft LUA307 14.4 kW/ft GE11 14.4 kW/ft l
ABB QFB (SVEA 96) 16.3 kW/ft i
SPC OFB (9x9 9X+)
14.7 kW/ft
'