Events Requiring Investigation

DOE-STD-1045-93

4.2.1

Events Requiring Investigation

Facilities guidelines should define events that will require investigation. All

events that could adversely affect operations or safety should be investigated at

an appropriate level. The following examples are typical of events that should

be investigated:

Design limits (e.g., Technical Safety Requirements, Safety Analysis

Report, or other limits) have been violated

Facility safety conditions are abnormal or unexplained

Safety or system features are improperly positioned

Equipment failure that could affect facility capability or safety has

occurred

An unplanned shutdown or significant loss of operation has occurred

A procedural violation or personnel error has occurred that causes, or

could have caused, serious personnel or equipment damage or could have

affected facility safety

Radiological or toxic material limits have been exceeded or radioactive or

toxic material lost/released

Facility system performance is unusual, abnormal, or unexplained

Chemistry or process parameters are out of specification or indicate

unexplained trends

Repetitive problems have occurred

Actual or attempted sabotage is suspected

Loss of Special Nuclear Material has occurred or is suspected