Manufacturing Laboratory

Lab 1:

Safety in the Lab

Safety – Violation Consequences

Consequences of safety violations– Personal injuries – Equipment destruction– Constant supervision by a classmate– Failing a section of the laboratory coursework– Dismissal from the CNC course– Legal recourse taken by victims for damages– …

Safety – Horseplay

NO HORSEPLAY at ANY TIME Horseplay is defined as:

– “Any rowdy or boisterous play”

– Any injury in the industrial workplace resulting from horseplay may exempt the violator from workman’s compensation coverage

– Immediate termination of employment often occurs due to the liability that horseplay represents

– Any person participating in horseplay while in the laboratory environment will be reviewed for punitive action

Horseplay can be distracting and cause unintentional actions of others while involved with dangerous activities, or cause mistakes either in calculation or action which result in injury and/or equipment damage

Safety Glasses

Safety glasses will be worn at all times while ANY tool work or machine is in operation

– Cutting wire can create metal projectiles– Using a hammer can create projectiles– Using an oil-can can express fluids over large distances into

the eyes– Opening machine guards allows loose materials to be

blown into the eyes– Using a cleaning brush can launch particles– …

Safety – Loose Clothing

All loose clothing (and hair) will be secured or removed around rotating equipment– Even gloves are a severe hazard near rotating

parts; and vise-grip pliers or other tools should be used to provide a secure hold and safe distance between the rotating tool/part and personnel

– The inertia of a rotating tool can mangle body parts long before personnel realize that the rotating tool/part has grabbed them

Waste Disposal – Oily Rags

Oily rags and oily paper products SHALL ONLY be placed in covered metal containers painted in red

– Oil and other fluids in the presence of paper or cloth can cause spontaneous combustion

– Covering the can limits the oxygen available to burn– Covering the metal can limits the boundaries for burning

adjacent materials– DO NOT dispose of any material in these containers unless

they are oily

Waste Disposal – Metal Shavings

Metal shavings shall be gently disposed of in a metal trash can– Metal shavings can be needle-like– Metal shavings are often oil soaked and a fire hazard– Metal shavings are often small and can become airborne

creating an eye hazard– Metal shavings can be razor-like and easily cut the eyes,

skin, clothing, and other surfaces

– Only metal will be disposed of in a dedicated metal can so that the contents can be recycled

Waste Disposal – Plastic & Wood

Plastic and wood waste products can be needle-like and shall be gently disposed of in any trash can– This does not diminish the health hazard these

waste products represent when considering the eyes, lungs, and skin

– Wear a dust mask, eye protection, and gloves when cleaning up waste plastic and wood

Other Safety Issues

To reiterate, No gloves Remove Jewelry Wear appropriate shoes

– No open toed sandals– Wear shoes that give sure footing– If you are working with heavy objects, steel toes

are recommended

Safe Conduct in the Shop

Be aware of what is going on around you– For example, be careful not to bump into someone while they are cutting with the

bandsaw (they could lose a finger!).

Concentrate on what you are doing– If you get tired, leave

Don’t hurry– If you catch yourself rushing, slow down

Don’t rush speeds and feeds– You will end up damaging your part, the tools, and maybe the machine itself

Listen to the machine– If something does not sound right, turn the machine off

Machining Safety

Don’t let someone else talk you into doing something dangerous

Don’t attempt to measure a part that is moving

If you don’t know how to do something, ask!

Do not set up or operate any machinery unless an instructor is in the shop

Do not operate any machine unless authorized to do so by an instructor or under an instructor’s supervision

Lock-Out Tag-Out

A lockable hasp has been designed for locking electrical circuit panels so that power and equipment can not be inadvertently started while workers are performing potentially dangerous maintenance

– The Tag hanging from the locked hasp specifically says “Danger”; the workers’ name & contact info is on the back

– ONLY the person who installed the tag may remove it; their supervisor may remove the tag but they are accepting all related liabilities

– Tampering with a Lock-Out is a criminal offense and can be prosecuted accordingly

Common Sense Machine Safety

Before you start the machine: Study the machine. Know which parts move, which

are stationary, and which are sharp. Double check that your work piece is securely held. Remove chuck keys and wrenches. Do not leave machines running unattended!

Cleanup

Clean up machines after you use them! A dirty machine is unsafe and uncomfortable to work on. Do not use compressed air to blow machines clean. This endangers

people’s eyes and can force dirt into machine bearings. Use the proper tool for the job. Many cuts in the shop occur because a wrench slips and a hand hits a

sharp cutting tools. Check tools before use to assure they are safe to use. Do not leave tools or work on the table of a machine even if the

machine is not running. Tools or work may fall off and cause a toe or foot injury. Put tools away when not in use. Place all scrap pieces in the correct containers.

More Safety

Never handle chips with your hands or fingers, or rags. Chips are extremely sharp and can easily cause cuts. Use a brush to remove chips. Never wear gloves or use rages to clean the workpiece or any

part of a machine that is running. Rotating tools or parts can grab gloves and rages and pull you into the

machine. Never use compressed air to clean any machine. If using compressed air to clean a part, point the air hose down and

away from yourself and other persons. Never use compressed air to clean your clothes or yourself.

– Particulate can be injected under the skin or make particulate airborne

Machining Safety

Do not run in the shop; there should be no “fooling around” in the shop at any time

Don’t be a “wise guy”

Do not walk behind a person operating a machine

You may bump the other person by accident or startle them and cause an accident

Get first aid immediately for any injury

Get help for handling large, long, or heavy pieces of material or machine attachments

Personal Safety

Follow safe lifting practices

– Lift with your leg muscles—not your back

– If you do not know how to lift safely, ask an instructor to show you

Be sure you have sufficient light to see clearly

– Check with an instructor if you do not have enough light

Aisles should be clear at all times to avoid tripping or other accidents

More Safety

Store materials in such a way that they cannot become tripping hazards

Keep the floor free of oil, grease, or any other type of liquid.

– Clean up spilled liquids immediately; they are slipping hazards.

Machines can easily grab loose clothing in rotating parts. – All set-screws should be of the flush or recessed type.

If they are not, move with caution when near them. Projecting set-screws are very dangerous because they may catch on

sleeves or clothing.

Networked Safety

Don’t just look out for yourself, think of others near you– If you see an unsafe condition

Let the persons involved know as soon as practical Do NOT distract others while informing them of safety

issues Don’t be shy, have good character and speak up when

you see a potential safety issue– Safety issues unnoticed are particularly dangerous– The instructor can diplomatically address safety issues