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Safety Workshop June 16, 2008
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Safety: responsibility of the school board, district administration, teachers, parents, and students
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ANSI Z87.1-1989 Protective Spectacles (for over prescription eyewear) Chemical Splash Goggles Face Shield Protective Spectacles
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Latex Nitrile
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Hard copy for every chemical in lab English Other languages, if necessary
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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
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Flow rate should between 60 and 120 ft/min. (Ideally 100 ft/min.) Mark sash Test annually Properly discharge exhaust to prevent reentry
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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
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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
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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
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No storage on top of flammables cabinets
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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
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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
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Annual inventory Posted outside lab Copy to local fire department
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Labels should contain the following: ◦ Chemical name as on MSDS ◦ Concentration ◦ Date made ◦ Initials ◦ NFPA label ◦ First aid information ◦ Expiration or use by date
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Benzene Lead? Magnesium powder? Mercury Methylene chloride? Perchloric acid Silver nitrate? Sodium chromate? Sodium dichromate?
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Post emergency numbers ◦ 911 ◦ Poison control ◦ Fire ◦ Police ◦ Hospital Practice drills Injuries ◦ Administer first aid ◦ Send to school nurse ◦ File a report
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Two clearly marked exits Posted floor plan with emergency escape route Fire doors that open in the direction of the escape
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GFI (ground fault interrupt) plugs on lab benches Multi outlet plugs with built-in circuit breaker
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Monthly safety shower test ANSI Z358.1-2004
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Weekly eyewash station test Plumbed eyewash Eyewash temperature 78-92˚F ANSI Z358.1-2004
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Smoke detector First aid kit Log inspections and tests Emergency gas shut off
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Practice drop and roll Must have safety shower Should have a fire blanket Class ABC fire extinguishers Monthly check of fire extinguishers
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For a small spill: ◦ Never clean up alone ◦ Use a spill kit For a large spill: ◦ Evacuate ◦ Call HazMat ◦ Call 911
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6 changes of air/hour in lab Separate ventilation for prep and storage rooms Hood ≠ room ventilation Open windows ≠ room ventilation
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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.
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Waste labels must display: ◦ The words “hazardous waste” ◦ Contents with chemical names, not formulas ◦ Approximate concentrations ◦ Date started ◦ Initials
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Flinn Waste pick-up every 6 months Waste should NEVER be picked-up during school hours
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Room occupancy based on fire and safety codes One teacher: up to 24 students
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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
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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
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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
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Fisher Scientific. Lab Safety Manual. 2007. http://www.cdc.gov/niosh/docs/2007- 107/pdfs/2007-107.pdf
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