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Examples of Contingency Analyses
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Examples of Contingency Analyses cont'd


DOE-STD-3007-93
EXAMPLE # 3
Contingency analysis for a dry fuel element staging area.
Contingency
No.
Description
Barriers
1
Only water source is fire suppression
system - fire or malfunction is required to
actuate.
Flow alarms on the fire water, heat and
smoke detectors in the staging area.
Doors do not impede reasonable water flow
rates. Water will not build up on the floor.
Item Limit Violationa
2
Administratively controlled limits and
written procedures.
Operator training and certification.
Independent observation
a.
The degree of flooding or the magnitude of item limit violation required to
have a criticality accident is discussed in Section 6.0.
EXAMPLE # 4
Contingency analysis for fuel handling in a storage pool.
Controlsa
Control Parameter
No.
Description
Item Limit (Number of fuel handling units
1.
Administratively controlled
out of storage)
limits & procedures
2.
Operator training &
certification
3.
Pre-job briefing
4.
Independent observation
a.
A more detailed description of these controls is given in Reference __. At least two
controls are required; no further significance should be placed on the number of controls
listed in this example.
10


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