BioSafety Training Contact Information • Research & Development http://www.pvamu.edu/pages/108.asp – Institutional Review Board (IRB) – Institutional Animal Care and Use Committee (IACUC) – Institutional Biosafety Committee (IBC) • Compliance Officer: Dr. M Shelton New Employees • Should receive proper training prior to beginning work • Should be supervised when working with biological materials until they can demonstrate proper techniques and procedures Aseptic Techniques and Procedures • Prior to manipulation – Use sterile components – Use engineered controls when appropriate (i.e. BSC) – Ensure components are present in BSC • During manipulation – Open vessel for minimum time required – Avoid cross contamination (e.g., using a loop that has contacted the outside of the vessel) Aseptic Techniques and Procedures • • • • • Use Universal Precaution No mouth pipetting No food, drink, tobacco products Do not apply cosmetics or remove contacts Work surfaces should be decontaminated every day and after any spill • Wash hands: – After working with a biohazard – After removing PPE – Before leaving lab • Do not touch face while working with biological material • Do not wear PPE outside the lab Universal Precautions • • • • • • • Assume that all samples are infectious Use good laboratory practices Use protective barriers Wash hands and exposed skin Avoid skin punctures Avoid contact with skin openings Immunizations Biological Safety Levels • BSL-1 – General Biology • BSL-2 – Pathogens (not airborne) • BSL-3 – Highly Infectious or Airborne • BSL-4 – Extreme Hazards (full containment) *5th Edition is on-line Biological Waste Disposal Liquids: Sewer Solids: Decontaminate Autoclave Autoclave Animals: Incinerate Bio-digest Sharps: Encapsulate or Trash Trash Choosing a Disinfectant • When choosing a disinfectant – Consider the organism – Characteristics of the work area • Frequently disinfect surfaces and equipment Types of Disinfectants Alcohols Ethyl or Isopropyl Alcohol at 70-80% concentration is a good general purpose disinfectant; not effective against bacterial spores Phenols Effective against vegetative bacteria, fungi, and viruses containing lipids; unpleasant odor Formaldehyde Concentration of 5-8% formalin is a good disinfectant against vegetative bacteria, spores, and viruses; known carcinogen; irritating odor Quaternary Ammonium Compounds Cationic detergents are strongly surface active; extremely effective against lipoviruses; ineffective against bacterial spores; may be neutralized by anionic detergents (i.e. soaps) Chlorine Low concentrations (50-500ppm) are active against vegetative bacteria and most viruses; Higher concentrations (2500ppm) are required for bacterial spores; corrosive to metals, must be prepared fresh Iodine Recommended for general use; effective against vegetative bacteria and viruses; less effective against bacterial spores Wet Heat Sterilization • Occurs when contaminate reaches – 15 psi – 250F – 30 min • Potential Problems – Dense Loads – Poor Heat Conductors (e.g. plastics) – Containers preventing steam penetration (some plastic bags and/or double bagging) Autoclave • Testing Loads – Autoclave Tape • Verifies materials have been in autoclave – Biological Indicator • Most Effective • Test should be conducted as normally used Autoclave (loading) • Do not double bag or tightly seal • Do not place sharp objects in bag • Shallow metal pans are more effective than tall plastic tubs • Vessels with liquid should not be capped • Add water to dry waste bags Autoclave (removing waste) • Ensure autoclave is “off” before opening • Ensure steam pressure is down • Open door (no more than .5 inch) slowly keeping head and hands from opening • Wait at least 10 minutes (or manufacturers recommendation) before removing anything • Wear heat resistant gloves • Clean any spill immediately • Take bag to dumpster Biological Waste Disposal • For solid waste – deface biological symbol on autoclave bag (required), place bag in black trash bag (recommended), and place in dumpster • Biohazard bags are only to be used for biohazardous waste! • For all biological waste – trained lab personnel need to dispose of waste (custodial staff is not responsible) Encapsulation • Metal Sharps – Decontaminate – Use rigid container – Encapsulate (plaster of paris) – Label “Encapsulated sharps” – Place in dumpster • Glass Sharps – Decontaminate – Seal in puncture resistant container – Label “Noncontaminated glassware” – Place in dumpster What’s wrong with this picture? 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Biological Safety Cabinet • Airflow + HEPA filtration • Keep Clean • Set-up Before use with BioHazards • Inspected/Certified – Initially – After relocation or repair – Annually or semiannually Working in a Biological Safety Cabinet • Preparation: – Turn off UV light – Wipe work surface with appropriate disinfectant – Place only needed items in cabinet – Segregate items for clean and dirty materials – Provide waste container inside cabinet – Restrict entry into lab and movement in lab Working in a Biological Safety Cabinet • Use: – Wear lab coat and gloves – Keep work at least 4” from glass view panel – Limit arm movement – Limit use of burner – Place disinfectant-soaked towel on the work surface to contain spill – Control tissue and loose paper Working in a Biological Safety Cabinet • Completion: – Decontaminate surface or enclose items which came in contact with biohazard – Cover waste container – Allow cabinet to operate 15-20 min without activity or leave it on Biological Spills • Develop a Plan of Action prior to working with biological materials • Immediate actions: – warn others – leave the room; close the door – remove contaminated garments – wash hands – notify supervisor – seek medical attention, if necessary Biological Spill • Clean Up Procedure – wait for aerosols to settle – put on protective clothing – cover with towels; allow contact time – apply disinfectant – wipe up; mop floor – autoclave wastes Records • Metal Sharps – date of treatment, quantity, method, and name of person (maintain 3 years) • Autoclave – – date of treatment, quantity, method, name of person – date of verification test and results Transporting Infectious Materials • On Campus – Use leak-proof container – Place primary container into sealed leak-proof secondary container – Use rigid transport container – Label transport container with biohazard symbol, material, emergency contacts – Secure transport container in campus vehicle (DO NOT use your personnel vehicle for transportation) Transporting Infectious Materials • Off campus – Follow federal and international regulations – Only by trained employees or contact EHS @ 1745 / 1746