Safety for Assembly 105

This class introduces general safety guidelines for assembly. Includes an Interactive Lab.

Class Details

Class Name:
Safety for Assembly 105
Number of Lessons:
Additional Language:

Class Outline

  • Objectives
  • The Importance of Assembly Safety
  • Assembly Site Organization
  • Eye and Ear Protection
  • Proper Dress for Assembly
  • Electric Safety
  • Fall Prevention
  • Forklift Safety
  • Point of Operation Safety
  • What Is Ergonomics?
  • The Importance of Good Posture
  • Repetition
  • Hand Tool Safety
  • Power Tool Safety
  • Summary


  • Explain the importance of assembly safety.
  • Explain the importance of assembly site organization.
  • Explain the importance of eye protection.
  • Explain the importance of ear protection.
  • Describe proper dress for assembly.
  • Describe procedures for observing electric safety.
  • Describe procedures for observing fall prevention safety.
  • Describe procedures for observing forklift safety.
  • Describe procedures for observing point of operation safety.
  • Define ergonomics.
  • Explain the importance of good posture.
  • Describe safe practices to avoid the negative effects of repetition.
  • Describe safe practices for working with hand tools.
  • Describe safe practices for working with power tools.


  • Job Planning, Benchwork, & Layout I
  • Job Planning, Benchwork, and Layout-FastTrack
  • MSSC Safety


Vocabulary Term Definition
adhesive bonding The joining of two or more materials through the use of adhesives such as liquids, drops, or gels.
American National Standards Institute An American non-profit agency that administers standards to promote safety. The American National Standards Institute is abbreviated as ANSI.
ANSI The abbreviation for the American National Standards Institute.
assembler The person who assembles parts.
assembly The process in which two or more objects are joined together.
assembly line A production process in which products are mass-produced in stages.
assembly site The place where assembly is performed.
barrier guard Any of various safety equipment that prevents assemblers from entering their hands near the point of operation.
base component The material that is being assembled.
body harness A form of PPE used when working at high elevations to prevent falls. The assembler wears a harness that is attached to suspended ropes.
brittle Having a fragile quality. A material that can break easily when subjected to force or pressure.
capacity The maximum load that a tool or machine can exert before it breaks down. Running a tool beyond its capacity can cause injury.
contract The act of exerting muscle to perform work.
earmuffs Ear wear that protects hearing as well as the outer ear from flying sparks or debris.
earplugs Ear wear that is inserted into the inner ear to protect hearing.
electric shock The flow of electricity through the body. Severe electric shock can be fatal.
electric tool A tool that is powered by electricity.
ergonomics The study of designing devices to decrease operator discomfort or fatigue and increase productivity.
fastener A device that holds two or more objects together. A fastener can be a button or a zipper as well as a bolt or a screw.
fastening tool Any type of tool used for assembling a fastener into a base component.
fire shield A flame-resistant shield used in assembly areas where there is a danger of flying sparks.
flammable A material that can easily ignite and start a fire.
force The push or pull that gives energy to an object. Assemblers exerting excessive force is an ergonomic concern.
forklift A small vehicle used in manufacturing that contains a platform for lifting and transporting heavy loads.
grounded Safely connected to a neutral body, like the earth, which can absorb a stray electrical charge. Electric tools must be grounded to help prevent electric shock.
hand tool A tool that is not powered by an external source, such as a hammer or screwdriver.
jaws The part on an open-end wrench that grips bolts or screws. Jaws on wrenches can be fixed or adjustable.
light curtains A row of either visible or invisible lights just before the point of operation. If the path of the lights is disturbed, the tool or machine stops operating immediately.
locked out A safety procedure required by OSHA that takes steps to dissipate all stored power during maintenance work or prevents access to certain machinery. Never try to operate or tool a machine that is under lockout.
mechanical fastening The joining of two or more materials through the use of fasteners such as nails, bolts, or screws.
Occupational Safety & Health Administration The United States government agency that regulates the conditions in working environments to ensure the health and safety of employees. The Occupational Safety & Health Administration is abbreviated as OSHA.
OSHA The abbreviation for the Occupational Safety and Health Administration.
personal protection equipment Any of various safety equipment that an assembler wears or uses to prevent injury in the workplace. Personal protection equipment is abbreviated as PPE.
pinch point Any place in which two base components come together that can cause an injury if a body part comes into contact with the area.
platform An open-sided floor that is elevated above the surrounding floor or ground.
point of operation The area where assembly takes place, between the fastener and the base component. The point of operation can be a safety risk if safety is not properly observed.
power tool A tool that is powered by an external power source source as air or electricity.
PPE The abbreviation for personal protection equipment.
respirator A device worn over the mouth and nose to protect the respiratory tract from harmful fumes or debris.
ricochet To rebound from a surface.
safety glasses Protective eyewear, usually made of thick plastic, that shields the eyes from flying debris. Safety glasses with side shields or safety goggles must be worn in any work area.
safety goggles Protective, tight-fitting eyewear that includes side shields to protect the eyes from flying debris. Safety goggles or safety glasses must be worn in any work area.
scaffold A temporary, elevated platform consisting of metal or wooden crosspieces, supports or cables, and metal or wooden planking.
screwdriver A tool used for fastening screws.
side shields Devices usually attached to safety glasses to protect the eyes and the sides of the face from flying debris. Safety glasses with side shields must be worn in any work area.
spatter Flying sparks produced during assembly processes such as welding. Spatter is a safety risk that can cause burns or fire.
suspension rope A form of PPE used when working at elevated heights to prevent falls. Ropes are suspended from the ceiling and attached to the assembler.
tagged out Another way to say locked out.
torque The amount of force applied to tighten a threaded fastener.
torque reaction The jerk an assembler can feel in the hand and/or arm when a fastening tool reaches torque. Torque reaction is an ergonomic concern.
welding The joining of two materials, usually metals, through the application of intense heat.
wrench A tool used for fastening nuts and bolts.