System Selection and Prioritization

DOE-STD-1052-93

Determination of Failure Modes and Effects - This section describes how to

determine the failure modes and effects of the failures for FCE.

History Review - This section describes the sources and data that should be reviewed

to ensure all failure modes and causes are identified.

7.1

System Selection and Prioritization

This section describes two methods for selecting and prioritizing plant systems to be

analyzed. There are many methods that have been used effectively. Each plant

should establish criteria and select a method that best meets its specific objectives.

The actual method selected is not critical to the enhancement effort. Of more

importance is to choose a method, document the method and its results, and proceed

with the system analysis.

Systems should be selected and prioritized using input from plant personnel and

management. The selection and prioritization process should include representatives

from operations, maintenance, and technical support and include managers,

supervisors, and appropriate craft personnel. During the process, the following

factors should be considered:

importance to nuclear safety

potential for improved system or plant availability

historical and potential maintenance costs

manpower and resource requirements

Other sources of information that may be helpful in the selection and prioritization

of plant systems include the following:

probabilistic risk assessments (PRA)

individual plant examinations (IPE)

regulatory concerns

equipment failure trending data

radiation exposure history

maintenance history

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