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Safety Workshop June 16, 2008

Safety workshop covering safety responsibilities, eyewear, hoods, chemical storage, emergency procedures, electrical safety, and more. Includes details on handling unsafe chemicals and waste disposal. Ensure a safe lab by following these guidelines.

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Safety Workshop June 16, 2008

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  1. Safety Workshop June 16, 2008

  2. Introduction • Safety: responsibility of the school board, district administration, teachers, parents, and students

  3. Safety Eyewear • ANSI Z87.1-1989 Chemical Splash Goggles Protective Spectacles Protective Spectacles (for over prescription eyewear) Face Shield

  4. Gloves Nitrile Latex

  5. MSDS • Hard copy for every chemical in lab • English • Other languages, if necessary

  6. Hoods • Lab doors closed when using hood • Clean and clutter free • No chemical storage in hood • Open windows ≠ Hood • Sash completely closed when not in use • Controls outside hood

  7. Hoods Continued… • Flow rate should between 60 and 120 ft/min. (Ideally 100 ft/min.) • Mark sash • Test annually • Properly discharge exhaust to prevent reentry

  8. Even More About Hoods… • Sash between face and experiment • Work 6 inches inside hood • Use a shield if possibility of explosion • Adequate illumination • Only necessary materials in the hood • Turn hood on before performing experiment

  9. Chemical Storage • Flinn Catalog • Alphabetically only within categories • Wooden storage shelves with ¾ inch lip • No stacking chemical bottles • Bottles no more than 2 deep on shelf

  10. Chemical Storage Continued… • Mark date received, date opened, and initials • No storage of more than 1 gallon of a liquid • No storage near, over, or under a sink • No storage above eye level • Secure storage areas

  11. Flammable Storage Cabinets • No storage on top of flammables cabinets

  12. Other Storage Cabinets • Store nitric acid in separate tub in acid cabinet • Corrosives and oxidizers in separate cabinet • e.g. Chlorates, chromates, nitrates, permanganates, persulfates • Store oxidizers 20 feet from flammables

  13. Gas Storage • Gases stored outside the classroom • NFPA 45: 8-1.2(96) • Store oxygen at least 20 feet from other flammable gasses • Strap tanks when used in classroom

  14. Chemical Inventory • Annual inventory • Posted outside lab • Copy to local fire department

  15. Labeling Secondary Containers • Labels should contain the following: • Chemical name as on MSDS • Concentration • Date made • Initials • NFPA label • First aid information • Expiration or use by date

  16. Unsafe Chemicals? • Benzene • Lead? • Magnesium powder? • Mercury • Methylene chloride? • Perchloric acid • Silver nitrate? • Sodium chromate? • Sodium dichromate?

  17. Emergency Procedures • Post emergency numbers • 911 • Poison control • Fire • Police • Hospital • Practice drills • Injuries • Administer first aid • Send to school nurse • File a report

  18. Egress • Two clearly marked exits • Posted floor plan with emergency escape route • Fire doors that open in the direction of the escape

  19. Electrical • GFI (ground fault interrupt) plugs on lab benches • Multi outlet plugs with built-in circuit breaker

  20. Safety Shower • Monthly safety shower test • ANSI Z358.1-2004

  21. Eyewash • Weekly eyewash station test • Plumbed eyewash • Eyewash temperature 78-92˚F • ANSI Z358.1-2004

  22. Other Safety Equipment • Smoke detector • First aid kit • Log inspections and tests • Emergency gas shut off

  23. Fire Equipment • Practice drop and roll • Must have safety shower • Should have a fire blanket • Class ABC fire extinguishers • Monthly check of fire extinguishers

  24. Spills • For a small spill: • Never clean up alone • Use a spill kit • For a large spill: • Evacuate • Call HazMat • Call 911

  25. Ventillation • 6 changes of air/hour in lab • Separate ventilation for prep and storage rooms • Hood ≠ room ventilation • Open windows ≠ room ventilation

  26. Waste Storage • Separate glass disposal container • Bag inside a box • Designated waste containers that are segregated by compatibility • NFPA 45: 7-2.1 • Store on wooden shelves with anti-roll lips, if possible • Bottles no more than ¾ full.

  27. Waste Labeling • Waste labels must display: • The words “hazardous waste” • Contents with chemical names, not formulas • Approximate concentrations • Date started • Initials

  28. Waste Disposal • Flinn • Waste pick-up every 6 months • Waste should NEVER be picked-up during school hours

  29. Overcrowding • Room occupancy based on fire and safety codes • One teacher: up to 24 students

  30. Safe Classroom • Post rules • Student safety contract • District-supplied safety training • District liability insurance • District review of science facilities and instruction every 3-5 years • Notify school officials about existing safety issues • Adopt chemical hygiene plan

  31. Chemical Hygiene Plan • SOP for activities using hazardous chemicals • Control measures to reduce exposure • Hoods and safety equipment function properly • Information on hazardous chemicals (MSDS) • Training • Circumstances requiring administrative approval • Requirements for medical consultation • Designation of responsible personnel • Requirements for additional protection • Provisions for yearly re-evaluation

  32. Future Plans • Emergency lighting • Anti-slip floor – NO carpet • Aisle widths at least 44 inches • No drawers that open into narrow aisles • Doors should open into room, not passageway

  33. References • Fisher Scientific. Lab Safety Manual. 2007. • http://www.cdc.gov/niosh/docs/2007-107/pdfs/2007-107.pdf

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