ML20039B701
| ML20039B701 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 12/09/1981 |
| From: | GENERAL ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML18025B692 | List: |
| References | |
| NEDO-24194A-ERR, NEDO-24194A-ERR-01, NEDO-24194A-ERR-1, NUDOCS 8112230443 | |
| Download: ML20039B701 (5) | |
Text
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3 NUCL E AR ENERGY SUSINESS GROUP
PUBLICATION NO.
~
ERRMA And ADDENDA T. l. E. NO.
SHEET Loss-of-Coolant Accident TITLE 1
N O.
Analysis for Brown's Ferry S
e h 1981 Nuclear Plant Unit 3 NOTE: Correct all copies of the applicable Julv 1979 ISSUE 0 ATE publication as specified below.
INSTRUCTIONS P A AG R Api t NE)
(COR AECTIONS AND ADDITIONS) 01 Page 3-1/3-2 Replace with new page 3-1/3-2.
02 Page 4-3 Replace with new page 4-3.
03 Pages 4-7 thru Replace with new pages 4-7, 4-8, 4-9 and 4-10.
4-9/4-10 l
f 8112230443 811209 PAGE DR ADOCK 05000296 PDR 1
INPUT INTO ANALYSIS A list of the significant plant input parameters.to the LOCA analysis is pre-sented in Table 1.
Table 1 SIGNIFICANT INPUT PARAMETERS TO THE LOSS-OF-COOLANT ACCIDENT ANALYSIS Plant Parameters:
Core Thermal Power 3435 MWt,'which corresponds to 105% of rated steam flow Vessel Steam Output 14.09 x 106 lbm/h, which corresponds to 105% of rated steam flow
. Vessel Steam Dome Pressure 1055 psia Recirculation Line-Break Area for-Large Breaks' - Discharge 1.9 ft2 (DBA) 1.3 ft2 (66% DBA)
- Suction 4.1 ft2 Number of Drilled Bundles 764 Fuel Parameters:
Peak Technical Initial Specification Design Minimum Linear Heat-Axial Critical Fuel Bundle Generation Rate Peaking Power Fuel Type Geometr*,
(kW/ft)
Factor Ration A.
IC Type 1 8x8 13.4 1.4
.1.2 B.
IC Type 2 8x8 13.4 1.4 1.2 C.
SDRB265L 8x8 13.4 1.4 1.2 D.
P8DRB299 8x8.
13.4 1.4 1.2 E.
PSDRB264Z 8x8 13.4 1.4 1.2 F.
P8DRB283'(LTA) 8x8 13.4 1.4 1.2 G.
PSDRB314 (LTA).
8x8 13.4 1.4 1.2
- To account for the 2% uncertainty in bundle power required by Appendix K, the SCAT calculation is performed with an MCPR of 1.18 (i.e., 1.2 divided by 1.02) for a bundle with an initial MCPR cf 1.20.
3-1/3-2
_J
4.5 RESULTS OF.THE CHASTE ANALYSIS s
This-code is used, with suitable inputs from the other codes, to calculate the fuel cladding heatup rate, peak cladding temperature, peak local cladding k'
oxidation, and core-wide metal-water reaction for large breaks. The 'detdiled fuel model in CHASTE considers transient gap conductance, clad swelling and rupture, and metal-water reaction. The e=pirical core spray heat transfer and c
channel wetting correlations are built into CHASTE, which solves the' transient tieat transfer equations for the entire LOCA transient at a single axial plane in a single fuel assembly.
Iterative applications of CHASTE determine the maximum permissible planar power where required to satisfy the require =ents of 10CFR50.46 acceptance criteria.
The CHASTE results presented are:
]
e-Peak Cladding Temperature versus time Peak Cladding Temperature versus Break Area e
N r
~"
. n Peak Cladding Temperature and Peak Local 0xidation'versus Planar e
Average Exposure for the most limiting break size
'2 N
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Maximum Average Planar Heat Generation Rate (MAPLHGR) 'versus Planar e
Average Exposure for the most limiting break size.
'N p
+
A su mry of the analytical results is given in Table 2.. Tabic-3 lists the
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figures provided for this analysis. The MAPLHGR values for each f el type h
in the BF-3. core are presented in Tables 4A through 4G.
~
4.6 METHODS In the following sections, it will be useful' to refer to the =ethods used' to analyze DBA, large breaks, and small breaks. For jet-pump reactors, these are defined as follcws:
a.
CBA Methods. L AMB/ SC AT / SAFE / DB A-R EFLOOD /C HAST E. Break size: DB A'.
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NEDO-24194 Table-4A' MAPLHGR VERSUS AVERA0E PLANAR EXPOSURE
' Plant: BF-3 Fuel Type:
Initial Core - Type 1 Average Planar Expo sure MAPLHGR PCT Oxidation (t'ad/t)
(kW/ft)
(OF)
Fraction 200 11.2 1670 0.003 1,000 1143 1669 0.003 5,000 11.8 1705 0.004 10,000 12.1 1740 0.004 15,000 12.3 1762 0.005 20,000 12.1 1757 0.005 25,000 11 3 1671 0.003 30,000 10.2
~1563 0.002-35,000 9.6 1503 0.002 Table 4B MAPLHGR VERSUS AVERAGE PLANAR EXPOSURE Plant: BF-3 Pael Type: Inital Core - Type 2
-Average Planar Exposure MAPLHGR PCT 0xidation (Mwd /t)
(kW/ft)
(OF)
Fraction 200 11.4 1666 0.003 1,000 11.6 1683 0.004 5.000 12.0 1720-0.004 10,000 12.2 1725 0.004 15,000 12 3 1747 0.004 20,000 12.1 1744 0.004 25,000 11 3 1658 0.003 30,000 10.2 1550 0.002 35,000.
9.6
.1488 0.001 40,000 9.0 1427 0.001 1
4-7 j
c_
v-NEDO-24194 Table 4C MAPLHGR VERSUS AVERAGE PLANAR EXPOSURE Plant: BF-3 Fuel Type: 8DRB265L' Average Planar Exposure MAPLHGR PCT 0xidation (Mwd /t)
(kW/ft)
(OF)
Fraction.
200 11.6 1727 0.004 1,000 11.6 1731 0.005 5,000 12.1 1777 0.005 10,000 12.1 1778 0.005 15,000 12.1 1790 0.006 20,000 11.9 1780 0.005-25,000 11 3 1725.
0.004 30,000 10 7 1663 0.003
-35,000 10.2 1603 0.003 40,000 9.6 1535 0.002 "The values in this table are conservative for both prepressurized and non-
~
pressurized fuel.
Table 4D MAPLHGR VERSUS AVERAGE PLANAR EXPOSURE Plant: BF-3 Fuel Type: P8DRB299
-Average Planar Exposure MAPLHGR PCT Oxidation-(Mwd /t)
(kW/ft)
(OF)
Fraction 200 10.9 1648 0.003 1,000--
11.0 1650-0.003 5,000
.11.5 1699 0.004-10,000 12.2 1762 0.005 15,000 12.3 1782 0.005 20,000 12.2 1786 0.006 25,000 11.9 1762 0.005 30,000 11.3 1709 0.004 35,000 10.9.
1662 0.003 40,000 10.4-1615 0.003 45,000 10.0 1567 0.002 4-8
,, ~ _ -, - _ _ _
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NEDO-24194 Table 42 MAPLHGR VERSUS AVERAGE PLANAR EXPOSURE Plant: BF-3 Fuel Type: P8DRB2S4Z Average Planar Exposure MAPLHGR PCT 0xidation (Mwd /t)
(kW/ft)
(CF)
Fraction 200 11.2 1695 0.004 1,000 11.2 1695 0.004 5,000 11.7 1744 0.005 10,000 12.0 1756 0.005 15,000 12.0 1762 0.005 20,000 11.9 1762 0.005 25,000 11.3 1727 0.004 30,000 10.8 1692 0.004 35,000 10.4 1646 0.003 40,000 9.9 1600 0.003 45,000 9.5 1546 0.002 Table 4F MAPLHGR VERSUS AVERAGE PLANAR EXPOSitRE Plant: BF-3 Fuel Type: P8DRB283 (LTA)
Average Planar Exposure MAPLEGR PCT 0xidation (Mwd /t)
(kW/ft)
(OF)
Fraction 200 11.2 1666 0.004 1,000 11.2 1669 0.004 5,000 11.7 1710 0.004 10,000 12.0 1715 0.004 15,000 12.0 1714 0.004 20,000 11.9 1706 0.004 25,000 11.3 1677 0.004 30,000 10.8 1646 0.003 35,000 10.4 1610 0.003 40,000 10.0 1568 0.002 45,000 9.5 1527 J.002 4-9
r NEDO-24194 Table 4G MAPLHGR VERSUS AVERACE PLANAR EXPOSURE Plant: BF-3 Fuel Type: PSDRB314 (LTA)
Averege Planar Exposure MAPLHGR PCT 0xidation (Mwd /t)
(k'd/ f t)
(OF)
Fraction 200 10.6 1615 0.003 1,000 10.7 1621 0.003 5,000 P.3 1660 0.003 10,000 11.7 1693 0.004 15,000 11.5 1700 0.004 20,000 11.2 1698 0.004 25,000 10.6 1672 0.004 30,000 10.1 1626 0.003 35,000 9.7 1584 0.002 40,000 9.3 1547 0.00' 45,000 8.8 1501 0.002 l
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