Lecture 1 biosafety
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The document discusses biosafety and biosecurity. Biosafety involves containment principles, technologies, and practices to prevent exposure to biological hazards and their accidental release. Biosecurity protects pathogens from threats. A hazard is something that can cause harm, while a threat is a person intending to cause harm. Risk is the likelihood of an undesirable event occurring, based on a hazard or threat. Laboratory biosafety focuses on preventing unintentional exposure or release of pathogens. Laboratory biosecurity protects and controls valuable biological materials to prevent unauthorized access. Common causes of laboratory acquired infections include equipment failure and human error.
Lecture 1 biosafety
- 1. Biosafety Introduction: Definitions and concepts PROF.DR.BAYDAA HAMEED ABDULLAH
- 2. Hazard, Threat, and Risk A hazard is an object that can cause harm A threat is a person who has intent and/or ability to cause harm to other people, animals, or the institution A risk can be based on either a hazard and/or a threat
- 3. What is Risk? The likelihood of an undesirable event happening, that involves a specific hazard or threat and has consequences Risk:- A combination of the probability of occurrence of harm (injury, illness,death, damage etc) and the severity of that harm. risk = probability × disutility
- 4. Hazard:- A source, situation, or act with a potential for causing harm. At workplace categorized: Physical, Chemical and Biological 1- Chemical:- a- Smoke. b- Toxic material. 2-Physical:- a-Moving road tankers. b- Noise. 3-Biological:
- 5. 5 Biohazard: The potential source of harm caused by biological agents or toxins
- 6. BIOSAFETY is protecting people from dangerous pathogens BIOSECURITY is protecting pathogens from bad people
- 7. Biosafety:-The set of containment principles, technologies and practices that are implemented to prevent exposure to biological agents . and toxins, or their accidental release. Biosecurity:-The set of measures taken to limit the threat posed by sudden widespread disease or biological contamination, as from biological warfare, or pandemic outbreaks
- 8. Laboratory Biosafety Containment principles, technologies, and practices implemented to prevent unintentional exposure to pathogens and toxins, or their unintentional release.
- 9. Laboratory Biosecurity Protection, control and accountability for valuable biological materials within laboratories, in order to prevent their unauthorized access, loss, theft, misuse, diversion or intentional release.
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- 12. ▪ Infections (symptomatic / asymptomatic) ▪ Acquired through laboratory related activities as a result of working with infectious agents 12
- 13. ▪ Causative or defined event □ 20% equipment failure □ 80% human factors 13
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- 15. ▪ Top “4” accidents resulting in infection 15
- 17. ▪ INGESTION □ Consumption of a substance by an organism ▪ INOCULATION □ Act of introduction of a substance into the body 17
- 18. ▪ CONTAMINATION □ Presence of a minor and unwanted substance or impurity in the skin or mucous membrane ▪ INHALATION □ Act of drawing air or other substances into the lungs 18
- 19. Laboratorysafetysymbols and hazard sign A-Laboratory safety symbols 1- Green Eyewash Sign:- this sign to indicate the location of an eyewash station.
- 20. 2-Green First Aid Sign: Lab Safety Signs .Use this symbol to identify the location of a first aid station
- 21. 3-Radiation Symbol This radiation symbol is a little fancier than your standard trefoil, but it is easy to recognize the significance of the symbol Red Ionizing Radiation Yellow optical radiation yellow radioactive sign yellow laser warning
- 22. 4-Blue Respiratory Protection:- This sign tells you respiratory protection is required
- 23. 4- blue clovesThis sign means you need to wear gloves or other hand protection. 5-Blue Protective Clothing:- This symbol indicates mandatory use of protectiveclothing
- 24. B- Hazard Symbols :- 1-Health Hazard: A cancer-causing agent (carcinogen) or toxicity substance to respiratory system , reproductive system and organs.
- 25. 2-Flame: Flammable materials or substances liable to self ignite when exposed to water or air (pyrophoric).
- 26. 3-Gas Cylinder: Gases stored under pressure, such as ammonia or liquid nitrogen.
- 27. 4.Corrosion: Materials causing skin corrosion/burns or eye damage on contact.
- 28. 5.Flame Over Circle: Identifies oxidizers. Oxidizers are chemicals that facilitate burning or make fires burn hotter and longer 6.Skull and Crossbones: Substances, such as poisons and highly concentrated acids, which have an immediate and severe toxic effect (acute toxicity).
Editor's Notes
- #6: demonstrates how following prescribed safety practices can break the chain of infection.