انت هنا الان : شبكة جامعة بابل > موقع الكلية > نظام التعليم الالكتروني > مشاهدة المحاضرة

Biosafety and Security

Share |
الكلية كلية العلوم     القسم قسم علوم الحياة     المرحلة 1
أستاذ المادة اياد محمد جبر المعموري       09/12/2016 12:56:20
Biosafety and Security
Lecture 2
1- Biosafety Barriers in Labs.
1-Primary barriers: Physical barriers or personal protective equipments for lab worker Gloves, masks, Goggles, aprons, suits, special breathing apparatuses












2-Secondary barriers: structural aspects of the laboratory that make working environment safer against infection such as Sinks for hand washing, Special containment areas, Special air ventilation patterns and Sterilization equipments.

2- Biosafety Level
A biosafety level is the level of the bio containment precautions, required to undertake while handling dangerous biological agents in an enclosed facility.


Laboratories divided on basis of nature of microbes:
Labs are divided into 4 biosafety levels; in which protective practices increase with each level
1-Biosafety Level 1 labs - work with least dangerous agents, require fewest precautions
2- Biosafety Level 2 labs: agents associated with human disease
3- Biosafety Level 3 labs: indigenous/exotic agents with potential for aerosol transmission; disease may have serious or lethal consequences.
4-Biosafety Level 4 labs - have strictest methods because dealing with agents that are most dangerous to human health.


3-Risk Assessment Strategy















4- Risk groups, biosafety levels, practices and equipment


5- Standard practices required in Bio labs.
1-frequent hand washing
2-door that can be kept closed when working.
3-limits on access to the lab space when working.
4-no smoking, eating, drinking, storage of food in laboratory.
5-care to minimize splashes and actions that may create aerosols (tiny droplets).
6-decontamination of work surfaces after every use after any spills.







6- A biosafety cabinet (BSC).
Also called as biological safety cabinet or microbiological safety cabinet , It is an enclosed, ventilated laboratory workspace for safely working with materials contaminated with (or potentially contaminated with) pathogens requiring a defined biosafety level, and there are four classes of Biosafety cabinet. The primary purpose of a BSC is to serve as a means to protect the laboratory worker and the surrounding environment from pathogens. All exhaust air is filtered as it exits the biosafety cabinet, removing harmful bacteria and viruses. This is in contrast to a laminar flow clean bench, which blows unfiltered exhaust air towards the user and is not safe for work with pathogenic agents.




References
Laboratory biosafety manual, Third edition (WHO, 2004)
Biorisk management Laboratory biosecurity guidance (WHO, 2006)


المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .
download lecture file topic