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Safety. Four Simple Questions. What are the hazards? What are the worst things that could happen? What do I need to be prepared? What are the prudent practices, protective facilities, and protective equipment needed to minimize the risks?. What is wrong with this picture?.

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Four simple questions
Four Simple Questions

  • What are the hazards?

  • What are the worst things that could happen?

  • What do I need to be prepared?

  • What are the prudent practices, protective facilities, and protective equipment needed to minimize the risks?



How might these problems be avoided
How might these problems be avoided?

  • Teach students the proper procedures.

  • Model the proper procedure each and every time.

  • Establish and enforce safety procedures.

  • Use safety contracts.


How can you demonstrate your safety sense
How can you demonstrate your safety sense?

  • Use safety contracts.

  • Develop a school and system wide chemical hygiene plan.

  • Enforce your safety policy and document infractions.

  • Post safety information in your classroom.

  • Label safety equipment appropriately.

  • Inspect, Correct, Document

  • Report & Investigate accidents and near misses




Chemical labels
Chemical Labels

Fisher MDDS.htm


Chemical labels1
Chemical Labels

PotNit.pdf



www.newton.dep.anl.gov/ york/eyewash.html

www.chem.unl.edu/ safety/hslab12.html

www.durhamgeo.com

www.aircleansystems.net


Biohazards what are they
Biohazards: What are they?

  • Infectious agents or biologically derived infectious materials, which present or may present a risk to other living things, including humans.

  • No high school level laboratory course should be dealing with infectious agents or potentially infectious materials!

http://www.nsela.org/safesci18.htm


Biohazards examples
Biohazards: Examples

  • Human, animal and plant pathogens: bacteria, fungi, viruses, parasites, rickettsiae, chlamydiae, toxins

  • All human and animal blood, blood products, tissues and body fluids

  • Cultured cells and potentially infectious agents these cells may contain

  • Allergens

  • Recombinant DNA products

  • Clinical, necropsy and surgical specimens (tissues, fluids, etc.)

www.irtc.org/.../stills/ 2001-10-31/bacteria.jpg


The four biosafety levels
The Four BioSafety Levels

  • BSL1: No known or minimal potential hazard of exposure to infectious agents

  • BSL2: Moderate potential hazard/low risk of exposure to infectious agents

  • BSL3: Moderate risk of exposure to agents that can cause serious or potentially lethal disease

  • BSL4: High individual risk of exposure to dangerous or exotic agents which cause life-threatening disease.


Which level is appropriate for high school
Which level is appropriate for high school?

  • BSL1

    • microbiology and/or biotechnology.

  • Based on safety equipment, practices, facility design and construction.

  • Labs are done with defined, characterized strains and viable microorganisms not known to cause disease in healthy humans; e.g. Bacillus subtilus, Naegleria gruberi; and exempt organisms under NIH Recombinant DNA guidelines.

www.nature.com/genomics/ papers/b_subtilis.html


Safety primary barriers
Safety: Primary Barriers

  • Special containment devices or equipment such as a biological safety cabinet are generally not required for manipulations of agents assigned to BSL1.

  • It is recommended that laboratory coats be worn to prevent contamination or soiling of street clothes.

  • Gloves must be worn, especially if the skin on the hands is broken or if a rash exists.

  • Protective eyewear must be worn for anticipated splashes of microorganisms or other hazardous materials to the face.


Safety secondary barriers
Safety: Secondary Barriers

  • Each laboratory contains a sink for hand washing.

  • The laboratory is designed so that it can be easily cleaned. Rugs in laboratories are not appropriate, and should not be used because proper decontamination following a spill is extremely difficult to achieve.

  • Bench tops are impervious to water and resistant to acids, alkalis, organic solvents, and moderate heat.

  • Laboratory furniture is sturdy. Spaces between benches, cabinets, and equipment are accessible for cleaning.

  • If the laboratory has windows that open, they are fitted with fly screens.


Remember the code
Remember the Code!

Blood Bourne pathogens include viruses, bacteria,

and parasites present in blood or other body fluids.

This standard does cover special practices,

access, warning signs, PPE, biosafety and training

requirements. For the high school science

laboratory, an Exposure Control Plan needs to be

in Place (OSHA Code (29 CFR 1910.1030)

BloodbornePathogens).


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