ML073321272
| ML073321272 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 11/07/2007 |
| From: | US Dept of Homeland Security, Federal Emergency Management Agency |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML073320782 | List: |
| References | |
| Download: ML073321272 (6) | |
Text
APPENDIX 4 EXERCISE SCENARIO AND TIMELINE This scenario is for Comanche Peak Steam Electric Station Unit 1. The scenario consists of a fire in the Turbine Lube Oil Tank Room. Then a Loss of Coolant Accident in the Reactor Containment, followed by failed fuel. Pressure increases in Containment, followed by a leaking Equipment Hatch seal. The main event is a large break LOCA with a failure of the containment resulting in a release of radioactive material to the environment.
The exercise is scheduled to begin at 7:30 am., Wednesday, August 29, 2007.
METEOROLOGICAL CONDITIONS Temperature is 85 degrees with wind out of 250*, at 10 mph. Temperature will increase to about 95 degrees by the end of the exercise..
EVENT
SUMMARY
A fire is reported in the Turbine Lube Oil Tank Room. The fire warrants the declaration of a NOTIFICATION OF UNUSUAL EVENT (EPP-201 Chart 9).
A 65-gpm reactor coolant system (RCS) leak occurs inside containment. An ALERT should be declared due to RCS leakage > 50 gpm based on EPP-201 Chart 2. Actions commensurate with an ALERT should begin. Operations crew may isolate letdown or may begin a reactor shutdown. If letdown is isolated, LCV-459 closes and LCV-460 partially closes leaving a 20-gpm leak.
A large break loss of coolant accident occurs. A SITE AREA EMERGENCY is warranted due to the LOCA leak and indications of failed fuel based on EPP-201, Chart 2. Expect the ERO to take actions warranted by procedure for a SITE AREA EMERGENCY. Site evacuation will not be demonstrated.
A person in the vicinity of the equipment hatch observes and reports steam coming from the equipment hatch. A GENERAL EMERGENCY is warranted per EPP-201, Chart 2. Expect the ERO to take actions warranted by procedure for a GE and to make the initial protective action recommendation based on plant conditions to be evacuate zone 2A and down wind sectors to 5 miles and shelter downwind sector between 5 and 10 miles.
Terminate the exercise around 1230, 94
I-0 b
m Y
8 c
.I Y
u 2
cr, w
95
I-E 0
z 5 -
m m
m a m
97
v1 W
2 s W
2 2
2 t?
E 0
E 3
?
0 0
m 3
1 99