ML20234D797
| ML20234D797 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 06/24/1987 |
| From: | VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | |
| Shared Package | |
| ML20234D749 | List: |
| References | |
| NUDOCS 8707070342 | |
| Download: ML20234D797 (6) | |
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VYNPS Table 1 SIGNIFICANT INPUT PARMETERS TO THE LOSS-OF-COOLANT ACCIDENT ANALYSIS Plant Parameters:
i Core Thermal Power 1664 MWt, which corresponds to 105% of rated steam flow 6
6.75 x 10 1bm/h, which corresponds to Vessel Steam Output 105% of rated steam flow Vessel Steam Dome Pressure 1055 psia Recirculation Line Break Area for Large Breaks - Discharge 2.26 ft2 (DBA)
- Suction 4.14 ft2 Number of Drilled Bundles 220 Fuel Parameters:
Peak Technical Initial Specification Design Minimum Fuel Linear Heat Axial Critical Bundle Generation Rate Peaking Power Fuel Type Geometry (kW/ft)
Factor Ratio
- A.
7D230 7x7 18.5 1.4 1.2 B.
8D219 8x8 13.4 1.4 1.2 C.
8D274L 8x8 13.4 1.4 1.2 D.
8D274H 8x8 13.4 1.4 1.2 E.
8D274 (High Gd) 8x8 13.4 1.4 1.2
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8DPB289 & P8DPB289 8x8 13.4 1.4 1.2 l
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BP8DRB299 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 of 1.20.
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Table 3.11-1H MAPLHGR VERSUS AVERAGE PLANAR EXPOSURE
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Plant: Vermont Yankee Fuel Type:
BP8DRB299 Average Planar MAPLHGR (kW/ft)
Exposure Two Loop
- Single Loop PCT 0xidation (mwd /t)
Operation Operation
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200.0 10.7 8.8 2030.
0.019 1,000.0 10.8 8.9 2037.
0.019 5,000.0 11.4 9.4 2093.
0.023 10,000.0 12.2 10.1 2178.
0.029 15,000.0 12.3 10.2 2198.
0.031 20,000.0 12.2 10.1 2193.
0.031 25,000.0 11.7 9.7 2139.
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35,000.0 10.6 8.8 1972.
0.028 41,900.0 9.4 7.8 1800.
0.012 Source: NED0-21697, August 1977 (revised) i l
- MAPLHGR for single loop operation is obtained by multiplying MAPLHGR for two loop operation by 0.83.
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