Walkdowns - doe-std-1073-20030077

DOE-STD-1073-2003

Configuration Management

7.3.1 Walkdowns

During walkdowns, the as-found configuration is identified by comparing the existing

physical configuration with the facility documentation to identify any discrepancies,

typically by marking up the documents. Walkdowns are sometimes conducted to:

Record manufacturers' nameplate data from equipment,

Identify missing or incorrect equipment labeling,

Determine the present material condition of equipment, and

Identify potential physical interactions between equipment (such as non-

seismically qualified equipment mounted in such a position as to impact

seismically qualified equipment during an earthquake).

A sample walkdown procedure is provided in Appendix G.

7.3.2 Resolution of Configuration and Documentation Discrepancies

The resolution of configuration and documentation discrepancies involves:

determining the actual physical configuration that exists at a point in time,

identifying any discrepancies with the facility documentation, and

technically resolving those discrepancies.

In some cases, discrepancies arise simply because the facility documentation is

incomplete or inaccurate in some detail. In other cases, discrepancies arise because

inadequately controlled hardware changes caused the physical configuration to become

different from the facility documentation. The level of detail of a particular facility

document type establishes the threshold of the corrections that need to be made. If a

facility document provides, or is intended to provide, information that does not agree

with the actual physical configuration, those discrepancies should be identified and

resolved. Leaving incorrect or unverified information on a document is likely to mislead

users of the document. Further, any information that is left on as-found documents and

has not been verified should be clearly identified. If the contractor is made aware of an

as-found discrepancy, the contractor should perform a technical review to determine if

the physical configuration is the desired configuration (in accordance with design

requirements) or if the facility documentation indicates the appropriate configuration (the

physical configuration needs to be changed to meet design requirements). In some cases,

the resolution of a discrepancy might be to establish the acceptability of the existing

physical configuration and change the design requirements. The design authority should

approve the discrepancy resolution (i.e., design verification) to ensure that the final

configuration is consistent with the design requirements. Changes to either the physical

configuration or the documentation should be tracked through a design change document.

The end product of the resolution of configuration and documentation discrepancies is

7-4