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Safety Workshop June 16, 2008 PowerPoint PPT Presentation


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Safety Workshop June 16, 2008. Introduction. Safety: responsibility of the school board, district administration, teachers, parents, and students. Safety Eyewear. ANSI Z87.1-1989. Chemical Splash Goggles. Protective Spectacles. Protective Spectacles (for over prescription eyewear).

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Safety Workshop June 16, 2008

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Safety workshop june 16 2008 l.jpg

Safety Workshop

June 16, 2008


Introduction l.jpg

Introduction

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


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Safety Eyewear

  • ANSI Z87.1-1989

Chemical Splash Goggles

Protective Spectacles

Protective Spectacles

(for over prescription eyewear)

Face Shield


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Gloves

Nitrile

Latex


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MSDS

  • Hard copy for every chemical in lab

  • English

  • Other languages, if necessary


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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


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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


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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


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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


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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


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Flammable Storage Cabinets

  • No storage on top of flammables cabinets


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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


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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


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Chemical Inventory

  • Annual inventory

  • Posted outside lab

  • Copy to local fire department


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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


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Unsafe Chemicals?

  • Benzene

  • Lead?

  • Magnesium powder?

  • Mercury

  • Methylene chloride?

  • Perchloric acid

  • Silver nitrate?

  • Sodium chromate?

  • Sodium dichromate?


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Emergency Procedures

  • 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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Egress

  • 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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Electrical

  • GFI (ground fault interrupt) plugs on lab benches

  • Multi outlet plugs with built-in circuit breaker


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Safety Shower

  • Monthly safety shower test

  • ANSI Z358.1-2004


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Eyewash

  • Weekly eyewash station test

  • Plumbed eyewash

  • Eyewash temperature 78-92˚F

  • ANSI Z358.1-2004


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Other Safety Equipment

  • Smoke detector

  • First aid kit

  • Log inspections and tests

  • Emergency gas shut off


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Fire Equipment

  • 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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Spills

  • 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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Ventillation

  • 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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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.


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Waste Labeling

  • Waste labels must display:

    • The words “hazardous waste”

    • Contents with chemical names, not formulas

    • Approximate concentrations

    • Date started

    • Initials


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Waste Disposal

  • Flinn

  • Waste pick-up every 6 months

  • Waste should NEVER be picked-up during school hours


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Overcrowding

  • Room occupancy based on fire and safety codes

  • One teacher: up to 24 students


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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


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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


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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


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References

  • Fisher Scientific. Lab Safety Manual. 2007.

  • http://www.cdc.gov/niosh/docs/2007-107/pdfs/2007-107.pdf


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