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It is the responsibility of the Principal Investigator to identify potential biohazards and to specify safe practices and procedures. All laboratory personnel must be informed of the potential hazards and trained in safe handling techniques. Service personnel and cleaning staff that enter the facility must be informed of the hazards or potential hazards that might be encountered. The following Biosafety Practices outline the minimum requirements for all research and teaching laboratories using biological commodities. Issues of non-compliance will be reported to the appropriate Chair, Dean and the Chair of the Institutional Biosafety Committee for their action.
The use of aseptic techniques and other good microbiological practices achieves three very important objectives. These are:
The principles of good microbiological practice should be applied to all types of work involving biological commodities (including genetic modification work) irrespective of containment level. In addition aseptic technique is also invaluable for preventing contamination of tissue cultures. Aseptic technique is based on creating a special (clean) micro-environment in which to grow and keep the micro-organism of interest and prevent all contact with the outside world. This micro-environment is usually some sort of culture or holding vessel such as a flask, bottle or petri-dish and the organisms can either be on a solid agar medium or be suspended in a broth, diluent or other fluid medium. The principles of aseptic technique are:
The following requirements are required for any laboratory using infectious or toxic agents:
These standard operating procedures are a minimum set of guidelines for the handling of biological commodities. Individual administrative units, laboratories, or research groups are expected to develop more detailed procedures as their situations warrant. Supervisors and principal investigators are responsible for complying with and/or enforcing appropriate safety and hygiene measures in the work areas they supervise. Some rules or standard operating procedures, which apply to all work areas on campus, include the following: General Procedures Respect and understand the safety and health hazards associated with the biological commodities and equipment you use, and practice the following general safety guidelines at ALL times: Accident response: If an injury requiring emergency medical assistance has occurred, call 6-911. Report to your pre-designated medical advisor. Biological spills: If a toxic/hazardous chemical has made contact with the skin, start flushing the area immediately. If emergency assistance is required, call 6-911. Children and unauthorized persons: Children and other unauthorized persons should not be in laboratories where hazardous materials or hazardous equipment are being used. Disposal of chemicals: see Lab Safety Program Electrical: Access to electrical equipment (e.g. plugs, switches and electrical panels) should be maintained free from obstructions to allow immediate access in an emergency. All receptacle outlets in laboratory spaces should be the polarized grounding type. Ground Fault Circuit Interrupters (GFCI's) should be used in those locations involving wet processes or outdoor work, including electrical outlets within six feet of sinks. All electrical hand tools used inside laboratories should be grounded or double insulated. All electrical extension cords used should be visible and inspected on a periodic basis for damage and/or defects. Cords should not run in aisles or corridors where they might be damaged or create a tripping hazard. Cords should not be run through doors, walls or partitions, under rugs, or above dropped ceilings. They should not be wrapped around fixtures, tied in knots, or draped over pipes, lights, or ventilation ductwork. Extension cords should not be used as substitution for fixed receptacle outlets. Cords used for 110-120 volt service should be UL listed standard heavy-duty three-wire equipped with a polarized three prong plug. Two-wire type extension cords should not be used. Emergency eye wash/safety showers: Be certain safety showers/emergency eyewashes are properly located and maintained. These units should be located in areas that will be immediately accessible (reachable within 10 seconds). There should be no obstructions that might inhibit the use of this equipment. Eye washes and safety showers should be flushed on a regular basis to verify that the units are working and to clear the lines of stale water and debris. Whenever these emergency units are checked for proper functioning, written documentation showing the date and person's initials performing the check, should be maintained. Equipment: Use proper equipment that is in good condition. For example, never use chipped or cracked glassware. Shield pressurized or vacuum apparatus and safeguard against bumping or overheating. Fire extinguishers: Fire extinguishers must be available, charged, and hung in a location that is immediately accessible (reachable within 10 seconds). There should be no obstructions that might inhibit the use of this equipment. Make sure that all extinguishers are checked annually. Each extinguisher should have a tag indicating the date it was last checked. Food, drink, and cosmetics: Eating, drinking and the application of cosmetics are forbidden in areas where hazardous chemicals are used and should be done only in well-defined, designated non-chemical areas. Do not store food in the same refrigerator with chemicals, biohazards or radioactive materials. Horseplay: Practical jokes or other behavior that might confuse, startle, or distract, another worker is forbidden when hazardous chemicals are present. Housekeeping: Exits, aisles and safety equipment must NOT be obstructed in any way with equipment, furniture, or other items. Aisles within the laboratory should be 36 inches in clear width. Work areas and floors are not to be used for excessive storage. Doors which are not in use but which are accessible from a corridor or adjacent room should be appropriately labeled if they are blocked on the interior of the room. Hallways are not to be used as storage areas. Mouth pipetting: Mouth pipetting is forbidden. Signs: Laboratories where biohazardous materials or operations are present must post a sign with the universal biohazard symbol. An emergency contact card, updated at least annually, should be posted on each laboratory entrance. Smoking: No smoking in laboratories. If you have been using biological commodities, be sure to wash your hands before smoking. Unattended experiments: If operations involving hazardous biological commoditiies are carried out with no one present, it is the responsibility of the worker to design procedures to prevent the release of hazardous biological commodities in the event of interruptions in utility services such as electricity, cooling water, and inert gas. Lights should be left on, and signs should be posted identifying the nature of the operation and the hazardous substances in use. If appropriate, arrangements should be made for other workers to periodically inspect the operation. Similarly, if unattended experiments require the use of running water, the worker should develop procedures to make sure the experiment is checked periodically for water leaking from the system. Working alone: When working with hazardous materials, it is advisable to have a second person present, or at a minimum, maintain contact via telephone.
Personal protective equipment (PPE) and personal hygiene are basic aspects of laboratory safety. Wearing appropriate personal protective equipment and practicing good personal hygiene as described below will minimize exposures to hazardous chemicals during routine use and in the event of an accident. Attire: Wear a lab coat or apron, cover legs (no shorts or skirts) (Biosafety prefers the use of solid-front laboratory coats) and feet (no sandals, open-toed shoes or absorbable materials), confine loose clothing and long hair. Nylons and/or pantyhose are not recommended because they may melt upon contact with acid and absorbable. Eye protection: Personnel including students, staff and visitors in laboratories wear safety glasses, goggles, or face shields at all times where eye hazards are a possibility. Goggles are recommended when impact hazards are possible, i.e. use of microbial loops. Contact lenses may be worn in the laboratory; however, they do not provide any protection of the eyes. Persons who wear contacts must use the same eye protective equipment as persons who do not wear contacts. Face shields: Full-face shields must be worn when conducting a procedure which may result in a violent reaction. Full-face shields with bottom caps to protect the neck are preferred because they provide the best protection. Gloves: Gloves are essential when working with hazardous substances. The proper gloves will prevent skin absorption, infection or burns. Glove materials vary in effectiveness in protecting against chemical hazards. Leather or a similar type of protective gloves should be used when inserting glass tubing into stoppers, make sure to lubricate the tubing and wear the protective gloves to prevent being cut in the event of the tubing slipping and breaking. Personal hygiene: Hands should be washed frequently throughout the day, after glove removal, before leaving the lab, after contact with any hazardous material, and before eating, drinking, smoking, or applying cosmetics. Respiratory protection: Work in a biological safety cabinet or provide adequate ventilation when working with materials that produce aerosols or when using chemicals concurrently with biologics. If the use of a respirator is required, you must comply with EHSO policy, which includes a medical assessment, fit testing, and instructions on proper use.
For each task involving hazardous materials or physical hazards, a written hazard assessment must be conducted and SOP written. Supervisors and Principal Investigators are responsible for conducting hazard assessments. Such assessments should not be limited to chemical hazards, but should also include such issues, when applicable, as radiation hazards, biological hazards, heat and cold hazards, and physical hazards. Evaluate the effects of possible exposure to a hazardous agent (e.g., symptoms of clinical infection, allergic symptoms or complaints related to pharmacological effects of end products, by-products, medium components or inactivated biological agents) detect changes in employee health that may indicate the need for a change in job procedures or job assignment detect patterns of disease in the work force or evaluate the effectiveness of control measures.
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