ML20112B195

Errata & Addenda 6 to LOCA Analysis for Peach Bottom Atomic Power Station,Unit 3

ML20112B195
Person / Time
Site:	Peach Bottom
Issue date:	11/30/1984
From:	GENERAL ELECTRIC CO.
To:
Shared Package
ML20112B082	List: ML20112B080 ML20112B114 ML20112B170 ML20112B195
References
NEDO-24082-ERR, NEDO-24082-ERR-06, NEDO-24082-ERR-6, NUDOCS 8501100254
Download: ML20112B195 (10)

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g. 4 NUCLEAR ENERGY BUSINESS OPERATIONS o GENERAL ELECTRIC COMPANY SAN JOSE. CA LIFORNI A 95125 GENER AL $ ELECTRIC APPLICABLE TO:

PUBLICATION NO. NEDO-24082 T.1. E. NO. mT356 , , , _ _ _

TITLE LOCA ANALYSIS FOR PEACH 6 N O.

BOTTOBf AT051IC POWER STATION DATE November 1984 UNIT 3 NOTE: Correctallcopies of the applicable ISSUE DATE OCCCMbOT 1977 publication as specified below.

INSTRUCTIONS PfRAG A P'N L NE) (COR RECTIONS AND ADDITIONS)

1. Page v/vi Replace with new page v/vi.

2. P' age 3-1/3-2 Replace with new pages 3-1 and 3-2.

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

4. Page 4-14 Replace with new page 4-14

5. Page 4-15/4-16 Replace with new pages 4-15 and 4-16 (Change brackets in right-hand margin indicate areas where report has been revised.)

i 8501100254 PDR ADOCK 85010705000278 PDR 1 of 1 p PAGE l

.'. .. NEDO-24082-LIST OF TABLES

/ Table Title Pg 3-1 Significant Input Parameters to the Loss-of-Coolant Accident Analysis 3-1

^4-1 Summary of Results 4-5 4-2 LOCA' Analysis Figure' Summary 4-6 4-3a MAPLHGR Versus Average Planar Exposure 4-7 4-3b MAPLHGR-Versus Average Planar Exposure 4-8 4-3c MAPLHGR Versus Average Planar Exposure 4-9 4-3d MAPLHGR Versus Average Planar Exposure 4-10 4-3e MAPLHGR Versus Average Planar Exposure 4-11 4-3f MAPLHGR Versus Average Planar Exposure 4-12 4-3g MAPLHGR Versus Average Planar Exposure 4-13 4-3h MAPLHGR Versus Average Planar Exposure 4-14 4-31 MAPLHGR Versus Average Planar Exposure 4-15

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4-3j MAPLHGR Versus' Average Planar Exposure 4-16 v/vi .

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

Table 3-1 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 ,,

for Large Breaks - Discharge 1.9 f t' (DBA)

- Suction 4.1 ft2 (pgA)

Number of Drilled Bundles 432 Fuel Parameters:

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Table 3-1 continued on Page 3-2.

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Table 3-1 (Continued)

Peak Technical Initial.

Specification Design Minimum Linear Heat Axial Critical Fuel Bundle Generation Rate Peaking Power-

' Fuel Type Geometry (kW/ f t) Factor Ratio

• A~. IC Type 2 7x7 18.5 1.5 1.2 B. IC Type 3 7x7 18.5 1.5 1.2

~ ae b ,9 e ,

C. 8D274L 8x8 13.4 1.4 1.2

'D.. 8D274H 8x8 13.4 1.4 1.2 E. -PTA260 8x8 13.4 1.4 1.2 F. .8DRB283 8 x 8R 13.4 1.4 1.2 G. P8DRB284H 8 x 8R 13.4 1.4 1.2

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H. B/P8DRB299 8 x 8R 13.4 1.4 1.2 -

I. P8DQB326LTA 8 x 8R 13.4 1.4 1.2 J. BP8DRB299H 8 x 8R 13.4 1.4 1.2

• To account for the 27. 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 of 1.20.

4 3-2

NEDO-24082 4.5 RESULTS OF THE CHASTE ANALYSIS This code is used, with suitable inputs from the other codes, to calculate the fuel'eladding heatup rate, peak cladding temperature, peak local cladding exidation, and core-wide metal-water reaction for large breaks. The detailed fuel model.in CHASTE considers transient gap conductance, clad swelling and rupture, and metal-water reacciaa. The empirical core spray heat transfer and

' channel wetting 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 fuel assembly. Iterative applications of CHASTE determine the maximum permissible planar power where required to satisfy the requirements of 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 Exposure for the most limiting break size ,

A summary of the analytical results is given in Table 4-1. Table 4-2 lists the figures provided for this analysis. The MAPLHGR values for each fuel type in the PB-3 core are presented in Tables 4-3a through 4-3j.

4-3

4.6 METRODS In the following sections, it will be useful to refer to the methods used to enalyze DBA, large breaks, and small breaks. For jet-pump reactors, these are defined as follows:

a. DBA Methods. LAMB / S CAT / SAFE / DBA-RFILuvu / CH A STE . Break size: DBA.

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

2 Break sizes: 1.0 ft 1 A < DBA.

c. Small Break Methods (SBM). SAFE /non-DBA REFLOOD. Heat transfer coefficients: nucleate boiling prior to core uncovery, 25 Btu /hr-ft2 _ .7 after recovery, core spray when appropriate. Peak cladding temperature and peak local oxidation are calculated in non-DBA-REFLOOD. Break sizes A 1 1.0 ft2 4-4

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Table 4-3g MAPLHGR VERSUS AVERAGE PLANAR EXPOSURE Plant: PB-3 ,

Fuel Type: P8DRB284H Average' Planar Exposure MAPLHGR PCT 0xidation (mwd /t) (kW/ft) (*F) Fraction 200 11.3 1812 0.007 1,000 11.3 1813 0.007 5,000 11.7 1858 0.008 -

10,000 12.1 1894 0,009 15,000 12.0 1897 L.009 20,000_ 11.6 1858 0.008 25,000 10.9 1777 0.006 30,000 10.2 1700 0.004 35,000 9.6 1630 0.003

. 40,000 9.0 1556 0.002 4-13

. n NEDO-24082 Table 4-3h MAPIRGR VERSUS AVERAGE PLANAR EXPOSURE

Plant: PB-3 Fuel Type: P8DRB299 and BP8DRB299

.Avarage Planar.

Exposure MAPLHGR PCT Oxidation

' (Wd/t) (kW/ft) (*F) Fraction 200 10.9 1768 0.006 1,000 11.0 1772 0.006 5,000 11.5 1817 0.007 10,000 12.2 1894 0.009 15,000 12.3 1923 0.010 20,000 12.1 1906 0.010 25,000 11.6 1856 0.008 30,000 10.9 1776 0.006 35,000 10.3 1703' O.004 40,000 9.6 1629 0.003 4-14

NEDO-24082 Table 4-31 MAPLHGR VERSUS AVERAGE PLANAR EXPOSURE Plant: PB-3 Fuel Type: P8DQB326LTA Average Planar Exposure MAPLHGR PGT 0xidation -

(MWa/t) (kW/ft) (*F) Fraction 200 10.9 1724 0.005 1,000 10.9 1730 0.005 5,000 11.5 1798 0.007 10,000 12.4 1892 0.010 15,000 12.5 1902 0.010 20,000 12.5 1902 0.010 25,000 11.9 1838 0.008 30,000 11.3 1766 0.006 35,000 10.7 1704 0.005 40,000 10.3 1659 0.004 45,000 9.3 1556 0.002 50,000 8.4 1446 0.001 4-15

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Table 4-3j MAPLHGR VERSUS AVERAGE PLANAR EXPOSURE Plant: PB-3 Fuel Type: BP8DRB299H Average Planar Exposure MAPLHGR PCT 0xidation (mwd /t) (kW/ft) ('F) Fraction 200 11.1 1820 0.007 1,000 11.2 1822 0.007 5,000 11.7 1877 0.009

-10,000 12.2 1940 0.011 15,000 12.3 1954 0.012 20,000- 12.0- 1930 0.011

.25,000 11.2' 1843 0.008 30.000 10.5 1767 0.006 i 35,000 9.8 1682 0.004 140,000 9.2 1607 0.003 45,000 8.7 1543 0.002 I'

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