Slide 1:SCIENCE SAFETY


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Slide 4:Laws, Rules and Regulations Chapter 22. School District Employees and Volunteers §22.0511 Immunity from Liability A teacher performing his/her duties is not personally liable if a student is injured unless the teacher exhibits negligence resulting in bodily injury to the student.


Slide 5:Chapter 37. Discipline: Law and Order §37.002 Removal by Teacher A teacher may remove a student from the classroom or laboratory for disruptive behavior and send the student to the principal’s office to maintain effective discipline and a safe environment.


Slide 6:Chapter 38. Health and Safety.§38.005 Protective Eye Devices in Public Schools. Teachers and students are required to wear protective eye devices during science investigations or activities where harmful materials or substances are being used.


Slide 7:Chapter 38. Protective Eye Devices in Public Schools (continued) This requirement applies to anyone observing a science investigation or activity where protective eye devices are required to be worn by the teacher and students.


Slide 8:Chapter 101. Tort Claims. §101.001 Tort Law creates and provides remedies for civil wrongs and injuries that do not arise out of contractual duties. Texas governmental agencies are generally immune from tort liability. Professional employees may be held liable if: excessive force is used in the discipline of students. negligence results in physical injury to students. the incident involves the operation, use or maintenance of any motor vehicle.


Slide 9:Chapter 101. Tort Claims. §101.001 Negligence is conduct that does not meet a standard legally established to protect others against unreasonable risk or harm. A person could be found negligent if they: do something they should not have done or commit an unlawful act (malfeasance). fail to do something they should have done (nonfeasance).


Slide 13:All school facilities constructed on or after January 1, 2004 must comply with new rules adopted by the Texas Education Agency. Square Footage per Student Requirements Requirements for construction on or after January 1, 2004


Slide 14:School Facilities Standards for Construction Before January 1, 2004 Square footage per room is based on an elementary school class size of 22 students and middle/high school class size of 24 students. In a middle school or high school combination laboratory/classroom, this translates into a minimum of 42 square feet of space per student.


Slide 15:Microscale lab activities can be very effective in schools with limited facilities because: they generally don’t require as much lab space to perform as ‘full scale’ labs. they don’t use very large quantities of chemicals or specialized laboratory equipment, reducing both cost and storage space requirements. the small amount of chemicals used can significantly reduce safety issues. they do not require facilities to dispose of large amounts of waste materials.


Slide 20:There are no ANSI (American National Standards Institute) standards for laboratory aprons. appropriate protective clothing must be worn during lab activities selection of lab aprons depends on the hazards present most aprons are made of plastic or rubber to protect against corrosive and/or irritating chemicals ‘bib type’ aprons are suitable for general laboratory use


Slide 21:Appropriate eye protection must be worn at all times by students and teachers during lab activities that involve hazardous materials or situations (i.e. heating, hammering).


Slide 22:The emergency eye wash station should be located so that it is no more than ten seconds (25 feet) away from any point in the laboratory. The emergency eye wash station should be flushed for five minutes once each week to remove any harmful contaminants that may form or grow in the eyewash.


Slide 23:There should be two clearly marked emergency exits in each science room. All exits must be unobstructed. Fire extinguishers should be placed in a visible location at every exit. If there is not an outside window, an emergency light should be available in the laboratory room.


Slide 24:All science classrooms and labs should have an ‘ABC’ extinguisher located at or near the exit(s).


Slide 25:In the unlikely event that you ever need to use the fire extinguisher in your classroom/lab, remember: Pull the pin Aim the nozzle at the base of the fire Squeeze the trigger Sweep the fire


Slide 26:REMEMBER:


Slide 28:Every chemical manufacturer is required to supply a recent MSDS with each chemical it produces.


Slide 29:Basic Information:


Slide 30:MATERIALS SAFETY DATA SHEET MATERIAL IDENTITY: ETHYL ALCOHOL CAS Number: 64-17-5 Synonyms: ethyl alcohol, ethyl hydrate, grain alcohol Manufacturer: Jane & John Doe Chemical Co. Address: Hazardland, Texas 77777 Information: 1-800-111-0000 Emergency Hotline: 1-800-111-0001 SECTION I: MATERIAL IDENTIFICATION AND INFORMATION COMPONENTS PERCENTAGE TLV Ethyl Alcohol (ethanol) 92.4-100 1000 ppm Water 0-7.6 N/A SECTION II: PHYSICAL AND CHEMICAL CHARACTERISTICS Boiling Point: 172oF (78C) Vapor Density : 1.59 Melting Point: -130C Water Reactive: None Solubility in water: completely miscible Vapor Pressure: 100mm at 27C Specific Gravity: 0.785 at 60oF Evaporation Rate: 2.7 (n-butyl acetate = 1) SECTION III: FIRE AND EXPLOSION DATA Flash Point and Method Used: 55oF c.c Auto-ignition Temperature: 793oF. Flammability Limits in Air (% by Volume): LEL: 3.28% UEL: 19.00% Extinguisher Media (carbon dioxide); alcohol foam Special Fire Fighting Procedures: Use ABC fire extinguisher Unusual Fire & Explosion Hazards: explosion hazard is moderate when exposed to flame SAMPLE


Slide 31:SECTION IV: REACTIVITY HAZARD DATA Stability: Stable Conditions to Avoid: Keep away from heat or ignition sources Incompatibility: avoid oxidizing agents such as acetyl chloride, nitric acid and hydrogen peroxide Hazardous Decomposition Products: carbon dioxide during combustion Hazardous Polymerization: does not occur SECTION V: HEALTH HAZARD INFORMATION Primary Route of Entry Inhalation Ingestion Carcinogen Listed: no carcinogens present Health Hazards Acute: irritation of eyes, nose and throat; headache Chronic: drowsiness and lassitude; loss of appetite and inability to concentrate Medical Conditions Aggravated by Exposure: Unknown Emergency First-Aid Procedures: Seek medical attention for further treatment Eye Contact: irrigate eyes with water for 15 minutes Skin Contact: wash with water Inhalation: if excessive, notify authorities and seek medical assistance Ingestion: gastric lavage, followed by saline catharsis, seek medical care SAMPLE


Slide 32:SECTION VI: CONTROL AND PROTECTIVE MEASURES Respiratory Protection: activated carbon respirator Protective Gloves: not required unless in contact with skin Eye Protection: chemical splash goggles Ventilation to be used: local exhaust sufficient Other Protective Clothing or Equipment: if exposure limit is exceeded, use NIOSH approved respirator. SECTION VII: HANDLING, DISPOSAL AND SPILL PROCEDURES If material is spilled or released: keep away from ignition sources ventilate area large quantities may be collected and incinerated consult with local and state regulations Precautions when handling and storing materials: keep containers closed ground containers when emptying SAMPLE NOTE: This sample is for educational use only. There is no guarantee of the reliability of the data nor any liability for damages relating to the use of the information on this MSDS form.


Slide 35:Most people have seen an NFPA ‘diamond’ but often do not have any idea what the colors, numbers and symbols represent. Do YOU know what information is provided on an NFPA ‘diamond’?


Slide 36:Health Fire Reactivity Special


Slide 37:EXTREME 4 3 2 1 0 SERIOUS MODERATE MINIMAL SLIGHT


Slide 38:Oxy oxidizing agent water reactive radioactive poison Acid Alk acid alkaline Cor corrosive


Slide 39:3 3 2 Flammability – SERIOUS Reactivity – MODERATE Special – WATER REACTIVE Health Risk – SERIOUS


Slide 40:Best Practices Be sure that all chemicals are properly labeled. Store chemicals in compatible families. Ensure that the chemical storeroom has doors that lock. Label the storeroom doors ‘Authorized Access Only’ or ‘Hazardous Materials’. Ensure that storage cabinets and shelves are resistant to corrosion. Store chemicals in an upright position and no more than two containers deep. Equip shelves with a lip to prevent chemicals from being jarred from the shelf. Store corrosives (acids and bases) in approved cabinets. Store flammables in an appropriate cabinet. Do not store chemicals above eye level or on the floor.


Slide 42:Standard Precautions to Prevent Infections wash hands with soap wear disposable gloves and wash hands after removing gloves wear lab aprons or coats place contaminated waste (gloves, paper towels, etc.) in a plastic bag notify custodial staff for proper disposal


Slide 44:A biohazard is any biological material, living or dead, that is a pathogen.


Slide 47:Be sure to consult the appropriate MSDS sheets before disposing of left-over chemicals and/or the by-products of chemical reactions.