Electrical hazards are potentially life threatening and found much too frequently. Any glass equipment being evacuated, such as suction flasks, should be specially designed with heavy walls. Sharps containers are ubiquitous in research labs and following a few safety rules can help prevent getting stuck with accident reports. Over-pressurization of cryogenic equipment can occur due to the phase change from liquid to gas if not vented properly. Boiling and splashing generally occur when charging (cooling) a warm container, so stand clear and wear appropriate protective equipment. Ithaca, NY 14850. Cold traps should be used to prevent pump oil from being contaminated which can create a hazardous waste. Use only puncture-proof and leakproof containers that are clearly labeled. The setup should allow for fast removal of heat. The skin or eye tissue will freeze. Seek medical attention immediately if further assistance is needed. The caps of liquid nitrogen dewars are designed to fit snugly to contain the liquid nitrogen, but also allow the periodic venting that will occur to prevent an over pressurization of the vessel. Maintain the centrifuge in good condition. Laboratory hazards include not only chemical and biological hazards but physical hazards as well. Janice M. Rusnak, Mark G. Kortepeter, Robert J. Hawley, Arthur O. Anderson, Ellen Boudreau, Edward Eitzen. They vary from slip, trip and fall hazards to the use of lasers and high voltage electrical equipment. Such symptoms may occur in seconds without warning. OSHA has developed this webpage to provide workers and employers useful, up-to-date information on laboratory safety. Do not use these as a substitute for permanent wiring. Jarring them may cause sudden boiling, and result in burns. Standards bearing heavy loads should be firmly attached to the bench top. Place thumbs on the tubing opposite the nick 2 to 3 cm and extended toward each other. Another very common electrical hazard is improper use of flexible extension cords. Other Safety Hazards. 54 hours lecture, 54 hours laboratory. Slips, trips, and falls are very common but easily avoided. Keywords: Physical Hazards. In the day-to-day bustle of conducting research experiments, worker health and safety can be easily overlooked. Return to read the back All cryogenic systems including piping must be equipped with pressure relief devices to prevent excessive pressure build-up. You just started a job involving physical work in a hot environment. Anyone proposing the use of liquid hydrogen should contact EHS at 541-346-9299 to ensure regulatory and safety concerns have been addressed. It is recommended that Cryogen Safety Gloves be used by the worker. If the system is subsequently closed and the liquid nitrogen removed, the evaporation of the condensed oxygen may over-pressurize the equipment or cause a chemical explosion if exposed to combustible materials, e.g., the oil in a rotary vacuum pump. Always handle HF in a properly functioning fume hood and an area equipped with a safety shower/eyewash. It is recommended to transport plastic containers this way as well since they also can break or leak. Some kinds of bottles containing liquids can crack in the autoclave, or when they are removed from the autoclave. If liquid nitrogen is used, the chamber should be evacuated before charging the system with coolant. There are numerous chemical hygiene plans available on the Internet. For more than 60 years, the Lawrence Livermore National Laboratory has applied science and technology to make the world a safer place.Livermore's defining responsibility is ensuring the safety, security and reliability of the nation's nuclear deterrent. Acid/base baths should have appropriate labeling and secondary containment. When available, glassware with ground joints is preferable. There are three levels of physical containment for laboratory work with recombinant DNA. Set up clean, dry apparatus, firmly clamped and well back from the edge of the lab bench making adequate space between your apparatus and others work. Handling and Personal Protective Equipment: If someone else in the lab needs to use an emergency shower (and it is safe for you to do so), assist them to the emergency shower, activate the shower for them, and help them get started flushing using the procedures above; then call 911. Journal of Chemical Education 1965, 42 (8) , A583. Death may result from errors in judgment, confusion, or loss of consciousness that prevents self-rescue. Provisions should be included in processes to make sure reaction temperatures do not cause violent reactions and a means to cool the dangerous reactions should be available. Laboratory workers are exposed to numerous potential hazards including chemical, biological, physical and radioactive hazards, as well as musculoskeletal stresses. If this confined fluid is suddenly released through a rupture or break in a line, a significant thrust may be experienced. Liquid hydrogen must be transferred by helium pressurization in properly designed transfer lines in order to avoid contact with air. What are Physical Hazards A physical hazard are simply hazards that can cause physical harm. Consider replacing mercury with alternative components. It is the responsibility of the Principal Investigator and laboratory supervisor to ensure that staff and students in laboratories under their supervision are provided with adequate training and information specific to the physical hazards found within their laboratories. A couple of key points to remember about proper lighting: Lead acid batteries contain corrosive liquids and also generate hydrogen gas during charging which poses an explosion hazard. With the growing popularity of microgrids for alternative energy management, there is demand for tools that allow us to study the effect of microgrids in distributed power systems. There should be no alcohol consumption during periods of high heat exposure. Suite 400 can be used to help with gathering the information you need. DO NOT put broken glassware in the regular trash. Before working, remove all jewelry from hands and arms and any dangling jewelry to prevent accidental contact with battery connections (this can cause sparks that can ignite vapors). Plan for emergency such as a spill or release of mercury. In most cases laboratory glassware can be cleaned effectively by using detergents and water. In the unlikely event of contact with a cryogenic liquid or gas, a contact burn may occur. If heating of a closed container is required, only use appropriate pressure-rated thick-walled pressure vessels or equivalent metal pressure reactors. Low temperature equipment can also fail due to thermal stresses caused by differential thermal contraction of the materials. Fluid intake must continue until well after thirst has been quenched. Never use dry heat. Evacuate the assembly gradually to minimize bumping. Included here are electrical safety hazards, ergonomic hazards associated with manual material handling and equipment use, handling sharps, and basic housekeeping issues. Long-sleeved shirts, lab coats, and aprons. As an energy conservation measure, please remember to turn off your lights when you leave your lab. Additional OSHA standards provide rules that protect workers in laboratories from chemical hazards as well as biological, physical and safety hazards. High exposure to sunlight / ultraviolet rays. The waste from a spill may contain lead and neutralized wastes may be toxic. Check the properties of the gases you are using, because some gases are toxic (e.g., carbon monoxide, fluorine, and nitrous oxide). Close all the doors of the fire area. %PDF-1.5 Physical Hazards Physical hazards in laboratory animal facilities include bites, scratches, and lifting or ergonomic injuries. Flammability and Explosion Hazards - Fire or explosion may result from the evaporation and vapor buildup of flammable gases such as hydrogen, carbon monoxide, or methane. Laboratory workers are exposed to numerous potential hazards including chemical, biological, physical and radioactive hazards, as well as, musculoskeletal stresses. Venting should always take place with the stopcock pointed away from the body. The Occupational Exposure to Hazardous Chemicals in Laboratories standard (29 CFR 1910.1450) was created specifically for non-production laboratories. Since the boiling point of liquid nitrogen is below that of liquid oxygen, it is possible for oxygen to condense on any surface cooled by liquid nitrogen. Additionally a Standard Operating Procedure (SOP), proper personal protective equipment (PPE), and spill materials should be available. Known as the OSHA Lab Standard, 29CFR1910.1450 requires laboratories to identify hazards, determine employee exposures, and develop a chemical hygiene plan (CHP) including standard operating procedures. Symptoms of mild to moderate heat stress can include: sweating, clammy skin, fatigue, decreased strength, loss of coordination and muscle control, dizziness, nausea, and irritability. Many injuries stem from poor housekeeping. In addition, if the mixture is exposed to radiation, ozone is formed, which freezes out as ice and is very unstable. General safety guidelines always wear protective lab coats before. Physical hazard: A physical hazard is an agent, factor or circumstance that can cause harm with or without contact. Visit us on Twitter High Pressure Gas Hazards - In cryogenic systems, high pressures are obtained by gas compression during refrigeration, by pumping of liquids to high pressures followed by rapid evaporation, and by confinement of cryogenic fluids with subsequent evaporation. 01 of 10 The Most Important Lab Safety Rule Portra / Getty Images Follow the instructions! Make sure you have secured the lid to the rotor and the rotor to the centrifuge. Only conduct such operations in well-ventilated areas, such as the laboratory, to prevent possible gas or vapor accumulation that may produce an oxygen-deficient atmosphere and lead to asphyxiation. Why is it needed? Adequate means for relieving resultant build-up of pressure must be provided. Workers will rarely, if ever, come into contact with cryogenic fluids if proper handling procedures are used. Learn about engineering controls used at UC San Diego to protect researchers from physical and chemical hazards. Oxidizers: Inorganic Nitrates, Nitrites, Permanganates, Chlorates, Perchlorates, Iodates, Periodates, Persulfates, Chromates, Hypochlorites, Peroxides, Perborates (ex . The information in this Asphyxiation - The ability of the liquid to rapidly convert to large quantities of gas associated with evaporation of cryogenic liquid spills can result in asphyxiation. Preferably, drill only part way through and then finish by drilling from the opposite side. Be sure to close and latch the autoclave door. It should be noted that two closed valves in a line form a closed system. For replacement and disposal of standard room lighting (fluorescent) bulbs contact CPFM Customer Service Center at 346-2319. Condensers should be properly supported with securely positioned clamps and the attached water hoses secured with wire or clamps. Use appropriate traps, condensers, or scrubbers to minimize release of material to the environment. Laboratory Chemical Safety Summaries (LCSSs) 2. All users should be given training in proper operating procedures for using the autoclave. Physical. People working in the labs must use safety equipment, lab safety measures, and hazard control and management. If your department/building has a glass washing service follow their policies and regulations as to labeling and emptying glassware. Individuals working in a laboratory must be aware of the potential for injury from physical hazards. 4 0 obj Loose fitting, heavy leather or other insulating protective gloves must be worn when handling cryogenic fluids. HF differs from other acids because the fluoride ion readily penetrates the skin, causing destruction of deep tissue layers, including bone. What is found acceptable for brief or occasional use may become problematic if performed for long durations or very frequently. Drink at least 4-8 ounces of fluid every 15-20 minutes to maintain proper balance during hot and/or humid environments. In all the hustle of loading the autosampler, pipetting, pouring, and mixing for research experiments, worker health and safety can be overlooked, inadvertently pushed aside or forgottensometimes with dire consequences. Hold the glass not more than 5 cm from the end to be inserted. Contact information, related policies, and complaint procedures are listed on the statement of non-discrimination. Physical and Chemical test performance to textiles by following test conducted as per AATCC, ASTM and ISO approve method. Whenever centrifuging biohazardous materials, always load and unload the centrifuge rotor in a biosafety cabinet. Polycarbonate is commonly used in eye protection, as well as in other projectile-resistant viewing and lighting applications that would normally indicate the use of glass, . The levels are referred to as PC 2, PC 3 and PC 4, with PC 4 being the highest level of containment. Safety gloves. Potential exposures to chemical hazards can occur both during use and with poor storage. Read and understand the Safety Data Sheet (SDS) for HF. Bags, containers, bundles, etc., stored in tiers should be stacked, blocked, interlocked, and limited in height so that they are stable and secure against sliding or collapse. It is the responsibility of the Principal Investigator and laboratory supervisor to ensure that staff and students in laboratories under their supervision are provided with adequate training and information specific to the physical hazards found within their laboratories. Also, do not use extension cords in a seriesjust get the right length of cord for the job. You have had a previous heat stress disorder. The Regulatory Laboratory specialises in Physical Properties & Physical Hazards testing; primarily for safe transport, supply and handling purposes. Alternate work and rest cycles to prevent an overexposure to heat. Ergonomic Hazards [ edit] A physical hazard is a hazard that can be caused in the environment you are in and it can cause harm to you. 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