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Laboratory instructors are responsible for training students and visitors, ensuring the use of appropriate personal protective equipment, and controlling overcrowding during laboratory exercises. Instructors are also responsible for maintaining discipline and enforcing all safety rules
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Injury rates are highest during initial period of employment and decreases with experience. In a school laboratory setting where students experience new activities, the likelihood of incidents and injury is high. Students MUST be taught what can go wrong, how to prevent events from occurring, and what to do in case of an emergency. Part of the curriculum MUST address safety. HOWEVER, teachers are required to: Observe, Supervise, Instruct, and Correct student actions
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Health Hazards Safety Hazards Environmental Harm Hidden Costs = Liability, lawsuits, fines, deductibles
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Teacher completed safety training; completed annually and name/date documented Student safety orientation documented. Student test results are retained Student safety contract signed by student and parent are retained Written lab safety rules to each student Safety rules posted and/or referred to during labs Proper chemical and glass spill clean-up communicated to student
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Lead by example. Teach safety as part of the curriculum. Follow and enforce safety rules, procedures and practices. Promote a culture of safety. Make safety a priority.
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Conduct regular inspections of safety and first aid equipment (document). Notify administration in writing of hazardous or potentially hazardous conditions. Never use defective equipment.
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Meets ANSI Z358.1. Heads 33”-45” from floor. 6” from the wall or nearest obstruction. Treat both eyes with water flow for at least 15 minutes. Activated for 3 minutes every week. Inspected annually. Free and unobstructed path and use zone.
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Fire blankets are fire safety items that can be useful in case of a fire. These nonflammable blankets are helpful in temperatures up to 900 degrees and are useful in smothering small fires by not allowing any oxygen to the fire. It is best to store fire blankets in or adjacent to the work area but not too close to a potential hazard. Fire Blankets
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Fire Extinguisher “quick checks” shall include at least the following items (NFPA 10 4-3.2): Fire extinguishers are located in designated place. No obstruction to access or visibility. Operating instructions on nameplate legible and facing forward. Safety seals and tamper indicator are not broken or missing. Examined for obvious physical damage, corrosion, leakage, or clogged nozzle. Pressure gauge reading or indicator in the operable range or position.
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Eye Safety Responsible science teachers must provide students with safe, appropriate eye protection. Safety eye wear available and used when working with any liquids, dust, heat, etc; Safety eye wear must be used with projectiles and/or moving objects such as turbines (Safety glasses do NOT provide splash protection.) Safety eye wear stored in a closed, sanitary container
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Under the new Haz Com Standard called Global Harmonization System or GHS, Material Safety Data Sheets (MSDS) are now called Safety Data Sheets (SDS). All SDSs will have a consistent 16-section format. Employers must ensure that SDSs are readily accessible to employees.
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Global Harmonization System (GHS) is a combination of: United Nations (UN): harmonized system; UN: transport of dangerous goods; USA and Canada: workplace, consumers, and pesticides; and European Union: classification and labeling of substances.
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GHS Overview Why GHS? label requirements were different: multiple labels, same product hazard definitions were inconsistent: toxicity, flammability, etc. over 100 HAZCOM regulations globally ♦ compliance is complex and costly ♦ international trade of chemicals was limited
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What did it look like previously?
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What they look like after GHS?
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Hazard Classification Criteria to classify a hazard: physical: 16 categories health: 10 categories environmental
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Section 1 – Identification Section 2 – Hazard(s) identification Section 3 – Composition / Information on Ingredients Section 4 – First-aid Measures Section 5 – Fire-fighting Measures Section 6 – Accidental Release Measures Section 7 – Handling and Storage Section 8 – Exposure Controls / Personal Protection Section 9 – Physical and Chemical Properties Section 10 – Stability and Reactivity Section 11 – Toxicological Information Section 12 – Ecological Information* Section 13 – Disposal Consideration* Section 14 – Transport Information* Section 15 – Regulatory Information* Section 16 – Other information including date of preparation of last revision *Sections outside of OSHA jurisdiction but inclusion of these sections is necessary for a GHS compliant SDS
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Symbols with red borders (hazard pictograms) Labels
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There are 9 pictograms. Only 8 are regulated by OSHA Health Hazards Physical Hazards Environmental Hazards (Regulated by Department of Environmental Quality) DEQ
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Acute toxicity (Less Severe): Irritant Dermal sensitizer Acute toxicity (harmful) Narcotic effects Respiratory tract irritation Acute toxicity (Severe ) Acute = short-term effect
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Skin corrosion Serious eye damage/ Eye irritation Carcinogen Respiratory sensitizer Reproductive toxicity Target organ toxicity Mutagenicity Aspiration Hazard
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Flammables Self reactives Pyrophorics Self heating Emits flammable gas Organic peroxides Explosives Self reactives Organic peroxides
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Corrosive to Metals Gases under Pressure Oxidizer
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GHS Will Use: signal words: “Danger” or “Warning,” hazard statements: “Toxic if Swallowed,” appropriate precautions, proper identification, and/or applicable supplemental
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There are several new label elements: Symbols called “Pictograms” Signal Words Hazard Statements Precautionary Statements Product Identification Supplier/Manufacturer Identification
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GHS Flammability Rating 1: extreme “Danger” (flammability class IA) 2:moderate “Danger” (flammability class IB) 3:slight “Warning” (flammability class IC) (combustible class II) 4:combustible “Warning” (combustible class IIIA) (No rating for Combustible Class IIIB or lower)
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Use labels with good adhesive. Use permanent marker. Print legibly. Replace damaged, faded, or semi-attached labels.
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NO UNLABLED SUBSTANCE SHOULD BE PRESENT IN THE LABORATORY AT ANY TIME !!!
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When chemicals are transferred from the original manufacturer’s container to another container that is referred to as a “Secondary Container” Label all Secondary Containers with: Chemical name. (as it appears on the SDS). Name of manufacture. Concentration or purity. Date prepared. Expiration or “use by” date.
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Containers in immediate use that are to be used within a day or session: Chemical name (as it appears on the SDS). Necessary handling. Hazard Information.
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Chemical waste containers should be labeled as follows: “WASTE” or “HAZARDOUS WASTE”. Chemical Name (as it appears on the SDS). Accumulation start date. Hazard(s) associated with the waste.
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Spill Control and clean-up materials. Master control shut-off valves for gas, water, and electricity. Smoke detector (tested regularly). Proper ventilation and exhaust (dependent on what is being stored). Safety cabinets for specific groups of compatible substances. A communication system to the main office or emergency center.
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Meets ANSI Z358.1. Heads 82”-96” from floor. Spray pattern minimum diameter of 20” at 60” above floor. Center of spray pattern at least 16” from any obstruction. Inspected annually. Free and unobstructed path and use zone.
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Criteria for Storage Area: Store chemicals inside closeable cabinets or on sturdy shelves with front-edge lip (3/4”) to prevent accidents and spills. Secure shelving to the wall or floor. Ensure that all storage areas have doors with locks. Keep chemical storage areas off limits to students. Ventilate storage areas adequately.
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Organization: Organize chemicals first by COMPATIBILITY – not alphabetic succession. Store alphabetically within compatible groups.
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Chemical Segregation: Store acids in a dedicated acid cabinet. Nitric acid should be stored alone. Store highly toxic chemicals in a dedicated, lockable poison cabinet that has been labeled with a highly visible sign. Store volatile and odoriferous chemicals in a ventilated cabinet. Store flammables in an approved flammable liquid storage cabinet. More than 10 gallons of flammable/combustible liquids must be in cabinet Storage in flammable cabinet must no exceed design quantities (e.g. 60 gallons) Cabinets should be properly vented if there is a potential for buildup of hazardous vapors. Store water sensitive chemicals in a water-tight cabinet in a cool and dry location segregated from all other chemicals.
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Storage Don’ts: Do not place heavy items, liquid chemicals, or large containers on high shelves. Do not store chemicals on top of cabinets. Do not store chemicals on the floor (even temporarily). Do not store items on bench tops or in fume hoods (except when in use). Do not store chemicals on shelves above eye level. Do not store chemicals with food or drink. Do not store chemicals in food storage refrigerators. Do not expose stored chemicals to direct heat or sunlight, or highly variable temperatures.
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Proper Use of Chemical Storage Container: Never use food containers for chemical storage
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Proper Use of Chemical Storage Container: Make sure all containers are properly closed or stopped
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Proper Use of Chemical Storage Container: After each use, wipe down the outside of the container with a paper towel before returning it to the storage and properly dispose of the paper towel after use.
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Aim for removal of hazardous or excess chemicals. Assure no future accumulation of excess or hazardous chemicals. Assure all personnel are trained in proper safety precautions. HOUSEKEEPING!!!
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Housekeeping “field day”, particular consideration and attention should be give to: Disposing of any unused/unneeded materials. Reorganizing storage areas. Removal or correction of electrical and fire code violations. General cleaning of work surface areas.
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Know what chemicals you work with. Read the label. Follow all established safety policies and procedures for chemical handling and storage. Use the proper personal protective equipment. Wash your hands before eating, drinking, applying make-up, etc. Appropriate location for exposure
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Regulatory Haz Com 2012 Final Rule Haz Com Comparison: Haz Com 1994 and 2012 – Side-by-side – Redline Strikeout of the Regulatory Text FAQs Guidance OSHA Briefs Fact Sheet Quick Cards – Labeling – Safety Data Sheets – Pictograms – Effective Dates OSHA Guide to GHS www.osha.gov/dsg/hazcom/ghs.html GHS documents (links to purple book)
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