Data Collection - std10520058

DOE-STD-1052-93

7.2

Data Collection

Once systems are selected, the analyst should collect design, operational, and

maintenance information in order to develop a data package for the system and

components. This ensures the operating characteristics, requirements, and history

of the system and associated components are known and considered in the analysis.

The data package should provide the analyst with the information needed to

determine system functions, equipment failure modes, failure causes, and failure

rates. The information for the data package may be obtained from sources such as

those shown in Attachment A. The information needed includes the following:

design specifications

operating requirements

theory of operation and operating limitations

maintenance and surveillance requirement

internal and external commitments

routinely scheduled PM and surveillance activities

Although the data collected may have many uses, collecting and assimilating the

information is a time-consuming effort and is performed continuously throughout the

process. To facilitate retrievability, use, and updating of the data collected, a

computer data base may be used for easy access by all analysts and other users. If

a computer program is not available for electronic approvals of analysis

documentation, computer-generated forms may be used to obtain the necessary

reviews and approvals.

7.3

System Boundary Determination

The next step in the enhancement process is to define the boundaries of selected

systems. The boundary of a system should include everything necessary for the

system to accomplish its function(s). Defining system boundaries is an important

step, and once established, boundaries should be documented and maintained

throughout the remainder of the process. To assist in defining system boundaries,

the analyst should refer to the boundary or system interfaces identified during a

design basis review, if one is available. Using information already developed

provides an opportunity to minimize the cost and resources needed.

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