ML082490481
| ML082490481 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 07/23/2008 |
| From: | - No Known Affiliation |
| To: | NRC/SECY/RAS |
| SECY RAS | |
| References | |
| 06-849-03-LR, 50-271-LR, Entergy-Applicant-E2-39-VY, RAS M-301 | |
| Download: ML082490481 (1) | |
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EXHIBIT E2-39 Vermont Yankee Transient Counting Status: July 23, 2008 No of Transient No. of Actual Transient Cycles Assumed in Cycles Experienced Event / Transient Description Analysis for 60 Years To-Date Boltup and Unbolt of Reactor Vessel Head 123 32 Hydrostatic Pressure or Leak Test t 120 33 Startup = Heatup at 100 degrees F/hr 300 92 Turbine Roll & Increase to Rated Power 300 92 Reduction to 75% Rated Power and Return to 10,000 143 Rated Power Reduction to 50% Rated Power 2,000 79 and Return to Rated Power Turbine Trip at 25% Power 10 1
Feedwater Heater Bypass 70 1
Scram - Loss of Feedwater Pumps Isolation 10 3
Valves Close (3 HPCI Injections per Event)
Reactor Overpressure with Delayed Scram -
1 0
Feedwater Stays on, Isolation Valves Open Scram - Single Relief or Safety Valve 1
0 Blowdown Scram -Turbine. Generator Trip, Feedwater 268.
63 Stays on, Isolation Valves Open & All other Scrams Improper Start of a Cold Recirculation Loop 1
0 Sudden Start of Pump in a Cold Recirculation 1
0 Loop Reduction to 0% Power/Cooldown = Shutdown 300 90 at 100°F/hr Hot Standby (Feedwater Injection) 300 33 ASME Code (Pre-service) Hydrostatic Test to 1
1 1,563 psig (One time only event during plant life only)
MW xht No FT--j-OFFERED t Inte n
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NRC Staff Other DOCKETEDQ7 USNRC August 12, 2008 (11:00am)
OFFICE OF SECRETARY RULEMAKINGS AND ADJUDICATIONS STAFF