Demonstration Safety: Difference between revisions
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== Cryogen Demonstration Safety == | == Cryogen Demonstration Safety == | ||
*Cryogens are extremely cold substances that boil at room temperature. | <!-- | ||
***READ THIS*** | |||
For the Cryogen Demonstration Safety, we need to make sure that any information stated in here follows these guidelines: | |||
* Accuracy is key. brevity is important, but too brief of an explanation won't give an accurate answer. | |||
*** "Cryogens are extremely cold substances that boil at room temperature." This statement is too brief, and isn't accurate. I would suggest writing something similar to the following: | |||
*** "A cryogen is any solid, liquid or gas that is cooled far below the freezing point of water, and can cause frostbite within seconds of direct exposure." | |||
* For the safety gear, mention the required items first, and end with the recommended ones. Goggles are required, cryogen gloves are required, a small blast shield is required. A lab coat is recommended. | |||
* The statement about the gloves I know is meant well, but should not be stated that way. When you are writing statements like that, think "What would Stuart say about it?" as you read over and edit them. The cryogen gloves we have are approved for use with liquid nitrogen, meaning that they won't absorb any of the liquid if it is spilled on them AND they protect from the extreme cold. Your statement should be reaffirming the use of these gloves. | |||
** I know the case about the Leidenfrost effect, but we should not be stating that in this safety writeup. The way it reads sounds like a reckless statement, which we do need to avoid because, well, MSU's OSHA people. | |||
* I would actually suggest making two sub-bullet lists for proper handling of solid and liquid cryogens. It will look nicer in the wiki like that, and it will be easier to read. | |||
* For cryogen spills, your statements are too brief. You need to list: | |||
1. How to contain a spill. | |||
2. What to do if you spill on yourself. (Hint: removing clothing is only for a severe spill.) | |||
3. How to clean up a spill | |||
* Make sure to have a statement (ideally in all caps) on not allowing any audience members to handle or use any of the cryogenic materials. | |||
* If you want any help in wording and phrasing any of this, let me (Patrick) know. | |||
*Some common cryogenic materials are dry ice, liquid nitrogen and anything frozen in liquid nitrogen. | *Some common cryogenic materials are dry ice, liquid nitrogen and anything frozen in liquid nitrogen. | ||
*A blast shield and a lab coat are strongly recommended. Safety googles should be worn at all times. Cryogenic-approved gloves should be used whenever directly handling solid cryogenics or objects that have been chilled in cryogen. For most demos, chilled objects will be moved using a pair of tongs. | *A blast shield and a lab coat are strongly recommended. Safety googles should be worn at all times. Cryogenic-approved gloves should be used whenever directly handling solid cryogenics or objects that have been chilled in cryogen. For most demos, chilled objects will be moved using a pair of tongs. | ||
*NOTE: Gloves (unless cryogen-approved) DO NOT protect against the direct exposure. Gloves are protection for when handling containers. When removing anything from liquid nitrogen a tool, such as a set of tongs should be used. Do not handle chilled objects directly like the racquet ball. When handling liquid cryogens, remember it is safer to handle them for short periods of time (a few seconds) with bare skin due to the Leidenfrost Effect. This DOES NOT protect you from prolonged exposure. Cryogenic gloves are required for direct handling of a cryogen for a lengthened time. | *NOTE: Gloves (unless cryogen-approved) DO NOT protect against the direct exposure. Gloves are protection for when handling containers. When removing anything from liquid nitrogen a tool, such as a set of tongs should be used. Do not handle chilled objects directly like the racquet ball. When handling liquid cryogens, remember it is safer to handle them for short periods of time (a few seconds) with bare skin due to the Leidenfrost Effect. This DOES NOT protect you from prolonged exposure. Cryogenic gloves are required for direct handling of a cryogen for a lengthened time. | ||
*If a liquid cryogenic spill occurs, move away from the liquid and remove any clothing that the cryogen splashed on. | *If a liquid cryogenic spill occurs, move away from the liquid and remove any clothing that the cryogen splashed on. | ||
*Solid cryogens spills can be moved with the tongs or cryogen-approved gloves. | *Solid cryogens spills can be moved with the tongs or cryogen-approved gloves.--> | ||
Revision as of 15:05, 28 March 2016
- This page lists all safety precautions and requirements for demonstrations. Please read over carefully before performing any demonstrations.
Fire Demonstration Safety
Some of our demonstrations use fire. Please take the following precautions if you are performing a demonstration involving fire:
- Tie back long hair and do not wear loose clothing.
- All presenters must wear safety glasses or goggles while the demonstration is being performed. Presenters not involved in the demonstration should stay at least six feet away from the demonstration.
- If a blast shield is used, the audience must be at least six feet away. If a blast shield is not used, the audience must be at least 15 feet away. A small blast shield is required for fire demonstrations that sit on a table.
- Fire demonstrations are never to be aimed towards the audience or demonstrators.
- Keep fire away from flammable items such as hair, clothing, and combustible powders and liquids (CPLs).
- Keep containers of CPLs closed until just before they are needed so that fumes or powders do not ignite.
- CPLs should be measured out with ignition sources turned off and at least six feet away.
- After they are measured out, close the container and remove it from the demonstration area before turning on the ignition source.
- If possible, pre-measure the amount needed for the demonstration so the bulk container does not need to be brought.
- Any spilled CPL should be taken care of immediately using a proper spill agent. Ignition sources should be turned off/extinguished if they are on/lit, and should not be turned on/lit until after the spill is taken care of.
- When using any device that produces fire or heat, with the exception of candle lighters and matches, wear heat-resistant gloves.
- When handling any object that is currently being or has recently been heated, wear heat-resistant gloves.
- Always have a fire extinguisher within easy access. Make sure you know how to operate it.
- Most fire demonstrations give off smoke. Be aware of smoke detectors, and read the safety precautions for Flying Particles.
Cryogen Demonstration Safety
Loud Demonstration Safety
Dry Chemical Demonstration Safety
- When handling dry chemicals, safety goggles and rubber gloves must be worn at all times.
- It is highly recommended that a lab coat is also worn while handling dry chemicals.
- Be aware of the properties of the chemicals used in a demonstration, as well as any safety hazards they might pose.
- Do not use any chemicals that you have not been trained on the use of, or are unfamiliar with.
- See Fire Demonstration Safety for additional guidance if the chemical is used to create a flame.
- See Flying Particles Safety for additional guidance if the chemical creates flying particles, including smoke/fumes.
- If a dry chemical is spilled:
- Scoop up as much as possible of the spilled chemical and place it in a plastic bag or other non-reactive, sealable container.
- Wet a paper towel and wipe down the area.
- Place the paper towel along along with the rest of the spilled chemical in the plastic bag or other container.
Liquid Chemical Demonstration Safety
Flying Particle Demonstration Safety
Under Construction Some of our demonstrations release particles or debris during the performance. Please take the following precautions if you are performing a demonstration which releases particles:
- Use a blast shield, if possible. It will help protect the audience from any debris.
- Have a designated "Blast Radius" for the demonstration. If you have a blast shield, the minimum radius is six feet. If you do not, the minimum radius is fifteen feet.
- All presenters and volunteers must wear safety glasses or safety goggles when the demonstration is being performed. Presenters not involved in the demonstration should stay outside of the blast radius.
- If the demonstration fires particles in one direction, it should be aimed away from the audience and other demonstrations.
If a demonstration gives off smoke or any similar micro-particles, then please use the following safety precautions:
- Only perform a demonstration which gives off smoke or similar micro-particles in a well ventilated area
- Notify the contact for the event prior to the event that the demonstration gives off smoke. They may need to move your presentation to a new room, or ask for a different demonstration to replace it.
- Be aware of any smoke alarms in the room, if any, and avoid using the demonstration near one.
- Do not let anyone from the audience to come close to a demonstration that is still giving off smoke.