The PDF file is a slide presentation.
Hazard Identification and Control
a dangerous condition, either potential or inherent, which can interfere with the expected, orderly progress of a given activity
a measured or calculated chance of exposure to hazard(s) which may or may not result in loss
Both should be managed!
an unplanned and therefore unwanted or undesired event resulting in physical harm and/or property damage
an unplanned event that did not but could have resulted in physical harm and/or property damage
Both should be investigated!