Machine Shop Rules

The following rules are applicable to all academic machine shops on campus:

  • Shop Hours: Work performed by undergraduates in machine shops is permitted only during designated times established by the shop supervisor or monitor but may not occur between the hours of 2:00 AM and 8:00 AM.
  • Shop Authority: Shop supervisors and monitors may prohibit shop access or machinery use for any reason
  • Training: No power machinery may be used without documented completion of safety training
  • Supervision: Undergraduates may not work without the supervision of a shop supervisor or monitor. All others are strongly discouraged from working alone
  • Safety Glasses: Safety glasses (meeting ANSI Z87.1-1989 or later) are required when equipment is in use. Additional protective equipment may be required for certain operations.
  • Loose clothing, hair and jewelry: No loose clothing may be worn in the shop - including ties, scarves and loose sleeves. Long hair must be contained and pulled back tightly. Long beards must also be contained. All jewelry, including rings, necklaces, bracelets and watches must be removed when using power equipment.
  • Attire: No open-toed shoes may be worn. Long pants are strongly encouraged.
  • Malfunctioning Equipment: Report all damaged or malfunctioning equipment to the shop supervisor or monitor. DO NOT use malfunctioning equipment.
  • Eating and Drinking: Food and drinks are prohibited.
  • Compressed Air: Compressed air MAY NOT be used for cleaning skin or clothing. End nozzle pressure of compressed air used for cleaning equipment may not exceed 30 psi.
  • Emergency access: Keep aisles, exits and access to emergency equipment clear
  • Housekeeping: Clean up before and after each machine use.
  • Report Issues: Immediately report all problems or concerns to the shop supervisor or monitor
  • Guards: All guards and shields must remain in place during machine operation.

The Princeton University Shop Rules poster must be prominently displayed in all campus shops. Posters can be printed by clicking on the link to the right or can be requested from EHS by calling 609-258-5294.


Kelly States
Assistant Director

Jamie McQuaid
Program Manager

Stephen Elwood
Associate Director