Waste materials
Type of tool required Reliability Waste materials Operating instructions Machine action Accessories/attachments Aesthetics
Observation of operation Materials for cleaning Materials handling devices Frequency of repair Test fixtures, ancillary
equipment Controls and human
factors
Operator comfort Ratings and loadings Guarding and shielding Warnings (audible, visual) Types of failure Consequences of failure Ventilation Cost
Service instructions Power source/loss Appurtenant parts Government regulation
Weight and size Speed of operation Pay/compensation plan Insertion/removal of
workpiece
Failure of workpiece Temperature of operation Noise of operation Emissions (paniculate/
gaseous) Stability
Social restrictions Weather Local specific operating
procedure Leakage Light/lighting Instructions, maintenance Effects of usage/wear Maintenance/repair/service Standards
?fThere is no significance to the order in the table; various products and situations will establish the relative importance in specific cases.