Lesson 1 Practicing Safety in the Lab Reminder: student learning activities are at the end of this power point.

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Presentation transcript:

Lesson 1 Practicing Safety in the Lab Reminder: student learning activities are at the end of this power point.

Next Generation/Common Core Standards Addressed!  RST.6 ‐ 8.1 Cite specific textual evidence to support analysis of science and technical texts. (MS-LS1-6),(MS-LS2-1),(MS-LS2-4)  WHST.6 ‐ 8.1 Write arguments to support claims with clear reasons and relevant evidence. (MS-LS2-4)  SL.8.5 Integrate multimedia and visual displays into presentations to clarify information, strengthen claims and evidence, and add interest. (MS-LS1- 7),(MS-LS2-3)

National, Agriculture, Food and Natural Resource Standards Addressed!  BS Safely manage and dispose of biological materials, chemicals and wastes according to standard operating procedures.  Sample Measurement: The following sample measurement strands are provided to guide the development of measurable activities (at different levels of proficiency) to assess students’ attainment of knowledge and skills related to the above performance indicator. The topics represented by each strand are not all-encompassing. BS a. Classify different types of personal protective equipment and demonstrate how to properly utilize the equipment.

Bell Work  Explain the meaning of safety  List hazards found in agriscience laboratories  Identify and properly use personal protection equipment  Describe safety practices with machinery and tools  Describe safety in agriscience laboratories.

Terms  Accident  Carelessness  Ear muffs  Ear plugs  Goggles  Hazard  Materials Safety Data Sheets (MSDS)  Personal protective equipment (PPE)  Risk  Safety  Safety glasses

Interest Approach  Draw the outline of a human face on a sheet of poster paper.  Use waterbased markers so that the lines will “run” when water gets on them.  Draw reasonably prominent ears, eyes, nose, and mouth on the face.  Particularly make the eyes blue or brown.  Place the poster on a bulletin board or stand it in the molding at the bottom of a writing surface.

Interest Approach - Continued  Lightly tape a clear piece of plastic or transparency film over one eye and leave the other eye uncovered.  Use an eye dropper and squirt a tiny amount (one or two drops) of water into one eye.  Observe how the marker “runs” or blurs as a symbol of eye injury.  Next, squirt a couple of drops at the covered eye and note what happens.  Ask students to explain the benefit of eye protection.

Objective 1: Explain the meaning of safety

Safety is preventing injury and loss.  Injury and loss may be inflicted on people or their property. People can suffer cuts and other wounds, injury to eyes and hearing, loss of appendages, and death as a result of accidents.

Safety Animals, crops, machinery, and other property can be injured or destroyed by accidents. Safety should also consider protecting the environment from spills of toxic materials, release of smoke, and other activities that may result in environmental damage.

Safety?

Safety PPrecautions can be taken to make an environment safer. An accident is an event that occurs unintentionally. People do not know that an accident is going to happen. If they did, they would avoid them. Accidents occur at home, work, school, and all other places. Some places have greater hazards than others.

A hazard is a danger where risk is present. Some situations are more hazardous than others, such as operating a motor vehicle is more hazardous than using a computer. We can practice safety if we know the hazards associated with a particular activity.

Risk is the chance that an accident will occur. Risk can be reduced by taking the proper precautions. Carelessness is failing to pay attention to hazards and taking unnecessary risk. Many people know what is safe but fail to go about their work and activities in a careful manner.

Safety  Safety is important for a number of reasons.  Protecting people is important.  Protecting property is also important.  Following safety practices prevents violating laws and avoids costs of medical bills and repairing or replacing damaged property.

Objective 2: List hazards found in agriscience laboratories. Anticipated Problem: What hazards are found in agriscience laboratories?

Safety Hazards  Begin by assessing the conditions in a laboratory that pose safety hazards. Identify the equipment, materials, and activities that occur. Assess the equipment, materials, and activities in terms of risk and identify practices that can be followed to reduce risk.

Safety Hazards  Areas involving hazards in agriculture/horticulture laboratories are fairly easy to identify.  Visual inspection will allow most hazards to be identified. Hazards are associated with using power tools and equipment.

Safety Hazards Hazards are associated with using living organisms, including plants, animals, and microbes. Hazards are associated with chemicals, fertilizers, and other substances.

Safety Hazards Hazards are involved with many work activities, such as constructing projects, carrying out experiments, and handling animals.

Hazards are involved in using electricity and electrical power tools. Hazards are found in many places such as water, falling, and exposure to sun and temperatures.

Safety Hazards  Name examples of activities that occur in a laboratory that could result in injury.  Relate examples of accidents you are aware of that occurred in laboratories.

PPE  Personal protective equipment (PPE) are devices worn or used to protect from injury. Individuals should take the initiative to properly use the appropriate PPE in a laboratory. PPE must be available and clean. Incorrectly using PPE does not provide the needed protection.

PPE PPE may be owned by an individual or by the school and stored in a facility that keeps it sanitary. Some PPE cannot be shared, such as ear plugs and masks. Goggles and safety glasses may be shared if properly cleaned between uses.

PPE  PPE are often needed in four major areas in an agriculture/horticulture laboratory: eyes, hearing, skin and body, and respiratory.

PPE  Eye protection is needed in areas where eyes may be injured. The protection afforded should be appropriate for the hazard. Some activities, such as welding, need to protect the eyes from bright light. Other activities, need to protect the eyes from splashing liquids, such as with chemicals, or flying particles, as with cutting wood, metal, or plastic.

PPE - Eye The most widely used PPE includes goggles, safety glasses, and face shields. Eye PPE should fit properly and not have broken or cracked lens. Lens should be clean.

PPE - Eye  Goggles are eye PPE with lens and rims that prevent solid objects, liquids and other materials from getting into the eyes. They should be held snugly against the face by a strap.  Safety glasses are specially designed spectacles that prevent flying objects from getting into the eyes.

PPE - Eye They should fit tightly and have brow bars and side panels that afford protection. It is best to use goggles in situations where liquids are involved because of the tight seal around the forehead and cheeks that prevent liquids from running into the eyes.

PPE - Eye In some cases, face shields are used alone or in combination with safety glasses. Tinted lens should be used as appropriate.

PPE - Hearing  Hearing protection is needed in areas where noise occurs on a sustained basis and with sufficient volume to damage hearing. Environments with loud bangs or engines require hearing protection. Ear plugs and muffs are most commonly used.

PPE - Hearing Ear plugs are small foam rubber devices that fit into the ear canal to reduce the passage of sound waves into the ear.  Ear plugs may be single plugs or corded pairs. Ear muffs are sound absorptive devices that cover the entire outer ear and prevent the passage of sound waves into the ear.

PPE – Skin and Body Skin and body protection is needed to prevent injury to the skin, bones, and other body tissues and organs. Gloves are worn on the hands to protect from solutions, cuts, and abrasions. Many kinds of gloves are available, ranging from the leather welding gloves with gauntlets to rubber gloves used in handling biological tissues.

PPE – Skin and Body Special types of gloves to resist cutting by sharp knives are worn in meats laboratories Boots and special shoes may be needed, depending on the hazards in the laboratory.

PPE – Skin and Body Hats are used to protect from falling objects and other hazards and reduce contamination of food products with hair. The kind of hat to use depends on the situation.  Aprons and special clothing are needed in some situations, such as a chemical laboratory.

PPE – Respiratory  Respiratory protection is needed in places where dust, liquid droplets, gases, and other materials may be in the air. Particle masks and respirators are most widely used. Special types of respirators are needed in some particularly hazardous situations that should be avoided in school labs.

PPE – Respiratory Particle masks should be clean and fit properly over the nose and mouth. The strap or elastic band should hold the particle mask securely in place so that no air can enter around the edges of the mask.

PPE – Respiratory Respirator equipment should be selected for the particular situation in which it will be used. Air circulation and removal is needed in areas where smokes, fumes, and other air-borne materials are being released.

PPE – Respiratory  Reliance only on PPE is not sufficient.  Steps must be taken to make a laboratory environment as safe as possible otherwise.

Safety Practices – Machinery/Tools  Many kinds of power machines and tools pose hazards to users and those who are observing their use. Power equipment, engines, and motors are especially hazardous. Always know how to properly operate equipment before attempting to use it. Study the operator’s manual.

Power Tool Hazards Tractors and equipment and power tools have special hazards. All safety practices should be conscientiously observed in using them. Dress properly and wear PPE for the kind of equipment that is being used.

 Hand tools can cause severe injuries if not used properly. Hand tools should always be in proper working condition. Hand tools should be used properly and only as intended. Wear eye and hearing protection as appropriate.

Power Tool Hazards  Electricity safety poses special problems in many laboratories. Electrical circuits may pose special safety risks particularly around water. All electrical devices should be installed according to the proper electrical code.

Power Tool Hazards All circuits should be protected with ground fault circuit interrupters (GFCI). Use only UL (Underwriters Laboratory) approved materials. Turn switches off except when electrical power is needed. Avoid using extension cords, especially long cords with small gauge wire.

The End NEXT: Student Learning Activities

 Sample tests are available in the Lesson Plan tab.

KEY

 Have students create shop safety posters with the different safety rules. On this slide and the next slide are some example posters.