Laboratory Safety

1. Laboratory Safety

2. Objectives • Identify and describe the different types of common hazards • Identify proper lab behavior • Create a list of lab safety rules applicable to the ag shop

3. Hazards • Tripping • Slipping • Falling • Pressure Leaks • Combustion • Hazardous Materials

4. Poor Safety Attitudes • “This job is simple” • “I do not have time to think about safety. I need to get this job done right now!” • “I’ll do things my way.” • “I can figure this out myself.” • “Accidents will happen no matter what I do.”

5. Tripping • Definition: Foot Motion is Interrupted • Hazards of Tripping • Irregular surfaces • Objects protruding from floor • Warped floor boards • Missing tile/ uneven brick • Loose rugs • Objects left lying on the floor

6. Controls to Prevent Tripping • Housekeeping • Elevation changes should be avoided • Inspection/Maintenance • Make changes in elevation more visible • Use warning signs

7. Slipping • Definition: The sliding of one or both feet • Slips occur when the lateral force applied at the foot-surface interface is greater then the frictional resistance available. • Hazards • Sudden change in floor texture or condition • Slopes • Sudden change from low slip resistance to high slip resistance.

8. Controls to Prevent Slipping • Housekeeping • Absorbent Materials • Raised walk areas • Matts and rugs • Selection of shoe and surface materials • Abrasive strips • Non-slip paints

9. Falls • Aprox. 20% of accidental deaths • Objectives of fall prevention • Prevent objects from falling • Prevent people from falling • Reduce energy levels if falls occur • Reduce injury at impact

10. Fall Prevention • Remove slipping and tripping hazards • Warnings and barriers • Fall limiting devices • Housekeeping • Overhead Protection • Stack and store safely

11. PPE • PPE = Personal Protective Equipment

12. Personal Protection • Eye and Face Protection • Ear Protection • Breathing Protection • Safe Dress – Closed toe shoes (preferably boots), pants, shirt (long sleeved for welding)

13. Laboratory Behavior • Never run in Lab • No “Horseplay” • Do not distract anyone while operating a machine • Obey Laboratory Rules • Use safety equipment and tools properly

14. Shop Safety Rules 1. Keep your work area clean and orderly 2. Report every injury to your supervisor immediately, no matter how slight or insignificant the injury may seem. 3. If you are unsure about the safe operation or process of a job, request assistance from your supervisor. 4. Horseplay is forbidden. Do not disturb or interfere with other students when they are performing their job. 5. Do not use electrical equipment while standing on damp or wet surfaces or when your hands are wet.

15. 6. Always unplug or disconnect from power all power tools before changing blades, bits, or attachments. 7. All signs, warnings, and other postings must be strictly adhered to. 8. Never work alone. 9. Wear all necessary protective gear and clothing. This always includes safety glasses and shoes that completely enclose your feet. Some shop activities will require additional safety gear.

16. 10. Long hair must be tied up securely. 11. Remove all personal accessories and loose clothing that might get caught in moving machinery. This includes rings, watches, jewelry, personal stereos, shop rags, ties, and open jackets. 12. Never leave a machine running unattended. 13. Support work pieces and cutting tools as securely as possible.

17. 14. Keep your hands well away from the point of contact between the work piece and the cutter. If you must hand hold the work to keep it in place, your set-up is unsafe; improve it. 15. Do not operate any machinery with which you are unfamiliar. 16. No food or drinks in shop.

18. Safety Color Coding • Red=danger or emergency • Orange=warning • Yellow=Caution • Blue=Out-of Order • Green=Safety • Black and Yellow diagonal stripes=radiation hazards

19. Fire Prevention and Control • Store fuels in approved containers • Dispose of all flammable objects • Check the location of flammable materials before igniting a torch or turning on a welder

20. Classes of Fire • Class A- ordinary combustible • ( wood ,paper, cloth) • Class B- Flammable Liquids • (Greases, fuels, paints) • Class C- Electrical Equipment • (Motors, Switches) • Class D- Combustible Metals • (Magnesium, sodium, potassium, titanium)

21. Fire Extinguishers • Make sure the fire extinguisher is labeled and is appropriate for your type of fire • Common Fire Extinguishers • Water- Class A • Carbon Dioxide –Class B and C • Multipurpose Dry Chemical- Class A, B, and C • Dry Powder Special Compound- Class D

22. Using a fire extinguisher • P-Pull the pin, this unlocks the operating handle • A-Aim the extinguisher at the base of the fire • S-Squeeze the operating handle • S-Sweep from side to side until the fire is out

23. Eye Safety • Protective eye wear should be worn in any circumstance where flying debris or moving parts could hurt you eyes, because we never know when accidents will occur. • Safety glasses are required at all times in the shop!!! No exceptions!!!

24. An Eye Saved • As the result of a private contractor safety glasses program, an employee began encouraging his eighteen year-old son, who installs siding on houses, to wear safety glasses while working. The son finally relented, when aluminum dust started getting in his eyes. About one week later, he was applying siding with an air powered staple gun. When the son fired a staple, it hit a metal plate behind the siding, ricocheted back towards his face and one leg of the staple penetrated the safety glasses' lens.

25. What happened? • The staple hit with such force that the frames were cracked and the son received bruising on the eyebrow and cheekbone.

26. An Eye Saved Wearing safety glasses saved his eyes and possible his life!!!

27. Maintenance • Eye protection devices must be properly maintained. • Scratched and dirty devices reduce vision, cause glare and may contribute to accidents.

28. Flash Burns • Flash burns are like sunburn in the eye and can affect both your eyes.

29. Symptoms • Pain that may be mild to very severe, usually starting a few hours after the incident • Bloodshot eyes • Light sensitivity • Watery eyes • Blurred vision • The feeling of having something in your eye.