ML20069J169

Errata & Addenda Sheet 4 to NEDO-24088-1, LOCA Analysis for Browns Ferry Nuclear Plant,Unit 2

ML20069J169
Person / Time
Site:	Browns Ferry
Issue date:	07/31/1982
From:	GENERAL ELECTRIC CO.
To:
Shared Package
ML18025B889	List: ML20069J160 ML20069J169 ML20069J172
References
77NED360, NEDO-24088-1, NEDO-24088-1-N04-ERR, NEDO-24088-1-N4-ERR, NUDOCS 8210250077
Download: ML20069J169 (8)

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• e NUCLE AR ENERGY BUSINESS GROUP + GENER AL ELECTRIC COMPANY SAN JOSE CALIFORNIA 95125 s

GEN ER AL h ELECTRIC l

APPLICABLE TO. ,

NEDO-24088-1 PUB LICATION, N o

ERRATA And ADDENDA T. i. E. NO.

LOCA Analysis for Browns SHEET TITLE NO.

Ferry Nuclear Plant Unit 2 July 1982

~~ - - DATE NOW Conect alicopin ot we applicable February 1978 publication as specified below.

ISSUE DATE l REFERENCES INSTRUCTIONS ITEM oN. A

,jsEc n Ap NE) (CORRECTIONS AND ADDtTIONS) 01 Page v/vi Replace with new page v/vi. ,

1 02 Page 3-1/3-2 Replace with new page 3-1/3-2.

03 Page 4-3 Replace with new page 4-3.

04 Pages 4-9 & 4-10 Replace with new pages 4-9 and 4-10.

05 Page 4-11 Add new page 4-11.

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NOTE: Brackets in right-hand margin indicate areas of revision.

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l PAGE 8210250077 821015 PDR ADOCK 05 COO 260 P PDR

NEDO-24088-1 LIST OF TABLES Table Title Pm 1 Significant Input Parameters to the Loss-of-Coolant Accident Analysis 3-1 2 Summary of Resulta 4-5 3 LOCA Analysis Figure Summary 4-6 4A MAPLHGR Versus Average Planar Exposure 4-7 4B MAPLHGR Versus Average Planar Exposure 4-8 4C MAPLHGR Versus Average Planar Exposure 4-9 4D MAPLHGR Versus Average Planar Exposure 4-10 4E MAPLHGR Versus Average Planar Exposure 4-10 ~

4F MAPLHGR Versus Average Planar Exposure 4 0 l

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NEDO-24088-1

3. INPUT TO ANALYSIS A list of the significant plant input parameters to the LOCA analysis is presented in Table 1.

Table 1 SIGNIFICANT INPUT PARAMETERS TO THE LOSS-OF-COOLANT ACCIDENT ANALYSIS Plant Parameters:

Core Thermal Power 3440 MWe, which corresponds to 105% of rated steam flow Vessel Steam output 14.05 x 106 lbm/h, which corresponds to 105% of rated steam flow Vessel Steam Dome Pressure 1055 psia Recirculation Line Break Area 3 for Large Breaks - Discharge 1.9 ft" (DBA) 1.3 ft (66% D3A)

- Suction 4.2 ft2 Number of Drilled Bundles 716 Fuel Parameters:

Peak Technical Initial Specification Design Minimum

. Linear Heat Axial Critical Fuel Bundle Generation Rate Peaking Power Fuel Type Geometrv (kW/ft) Factor Ratio

• A. IC Type 1 & 3 7x7 18.5 1.5 1.2 B. IC Type 2 7x7 18.5 1.5 1.2 C. 8DB274L 8x8 13.4 1.4 1.2 D. 8DB274H 8x8 13.4 1.4 1.2 E. 8DRB284L 8x8 13.4 1.4 1.2 F. P8DRB284L 8x8 13.4 1.4 1.2 G. P8DRB265H 8x8 13.4 1.4 1.2 .

• To account for the 2% uncertainty in the 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 of 1.20.

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NED0-24088-1 4.5 RESULTS OF THE CHASTE ANALYSIS This code is used, with suitable inputs from the other codes, to calculat. the fuel cladding heatup rate, peak cladding temperature, peak local cladding oxidation, and core-wide metal-water reaction for large breaks. The detailed fuel model in CHASTE censiders transient gap conductance, clad swelling and rupture, and metal-water reaction. The empirical core spray heat transfer and channel vetting correlations are built into CHASTE, which solves the transient heat transfer equations for the entire LOCA transient at a single axial plane in a single iuel assembly. Iterative applications of CHASTE determine the maximum permissible planar power where required to satisfy the requirements 10CFR50.46 acceptance criteria.

The CHASTE results presented are:

e Peak Cladding Temperature versus time e Peak Cladding Temperature versus Break Area e Peak Cladding Temperature and Peak Local 0xidation versus Planar Average Exposure for the most limiting break size e Maximum Average Planar Heat Generation Rate (MAPLHGR) versus Planar Average Expostre for the most limiting break size l A summary of the analytical results is given in Table 2. Table 3 lists the figures provided for this analysis. The MAPLHGR values for each fuel type in the .

BF-2 core are presented in Tables 4A through 4F. .

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NEDO-24088-1 4.6 METHODS In the following sections, it w'111 be useful to refer to the methods used to analyze DBA, large breaks, and small breaks. For jet-pump reactors, these are defined at follows:

a. DBA Methods. LAMB / SCAT / SAFE /DBA-REFLOOD/ CHASTE. Break size: DBA.

b. Large Break Methods (LBM). LAMB / SCAT /SAiE/non-DBA REFLOOD/ CHASTE.

Break sizes: 1.0 ft2 < A < DBA.

c. Small Break Methods (SBM). SAFE /non-DBA R2 FLOOD. Heat transfer coefficients: nucleate boiling prior to core uncovery, 25 Beu/hr-f t _.y2 after recovery, core spray when appropriate. Peak cladding temperature and peak local oxidation are calculated in non-DBA-REFLOOD. Break sizes A < 1.0 ft2, No 4-4

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f NEDO-24088-1 Table 4C

MAPLHGR VERSUS AVERAGE PLA

iAR EXPOSURE Plant: BF-2 Fuel Type: 8DB274L i

Average Planar Exposure MAPLHGR PCT 0xidation (Mwd /c) (kW/ft) (*F) Fraction 200 11.2 1652 0.003 1,000 11.3 1645 0.003 5,000 11.9 1648 0.003 10,000 12.1 1626 0.002 15,000 12.2 1642 0.003 20,000 12.1 1642 0.003 25,000 11.6 1603 0.002 30,000 10.9 1537 0.002 l ~

35,0rt 9,9 1447 0.001 40,000 9.3 1389 0.001 .

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, O-NEDO-24088-1 Table 4D MAPLHGR VERSUS AVERAGE PLANAR EXPOSUFI Plant: BF-2 Fuel Type: 8DB274H Average Planar Exposure MAPLHGR PCT 0xidation (Mwd /c) (kW/ft) ('F) Fraction 200 11.1 1646 0.003 1,000 11.2 1635 0.003 5,000 11.8 1640 0.003

10,000 12.1 1630 0.002 15,000 12.2 1647 0.003 20,000 12.0 1648 0.003 25,000 11.5 1608 0.002 30,000 10.9 1547 0.002 35,000 10.0 1457 0.001 1

40,000 9.3 1401 0.001

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Table 4E MAPLHGR VERSUS AVERAGE PLANAR EXPOSURE Average Planar Exposure MAPLHGR PCT 0xidation.

(mwd /t) (kW/ft) (*F) Fraction 200 11.2 1685 0.004 1,000 11.3 1667 0.003 5,000 11.8 1671 0.003 10,000 12.0 1647 0.003 15,000 12.0 1669 0.003

20,000 11.8 1672 0.003 25,000 11.2 1633 0.003 30,000 10.8 1596 0.002 35,000 10.0 1527 0.002 40,000 9.4 1464 0.001 4-10

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NEDO-24088-1 Table 4F MAPLHCR VERSUS A%ERAGE PLANAR EXPOSURE Fuel Type: P8DRB265L i

Average Planar Exposure MAPLHGR PCT 0xidation (Mwd /t) (kW/ft) (*F) Fraction 200 11.5 1674 0.003 1,000 11.6 1672 0.003 5,000 11.9 1638 0.003 10,000 12.1 1623 0.003

' 15,000 12.1 1633 0.003 20,000 12.0 1638 0.003 25,000 11.6 1607 0.002 30,000 11.2 1561 0.002 35,000 10.9 1523 0.002 40,000 10.5 1480 0.001 45,000 10.0 1438 0.001 5

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