Friday, April 1, 2016

Spill Control

A company’s spill prevention and response plan should be kept in a central location where it is easily accessible for all employees to find in a moment’s notice. Every plan should have the following sections: materials inventory, spills that require special cleanup, facility map, employee training log, and a spill kit inventor and labeling. The supervisor is responsible for keeping the employees up to date in training and are familiar with the procedures as they get updated. After the plan has been fully implemented it should be maintained annually and should especially be updated when new chemicals are brought into the workforce. On the plan there should be a list of people and their phone numbers that are deemed responsible for spill response planning. There should also be a list of emergency contact numbers such as the numbers for your local fire department, poison control center, police department, emergency release and incident reporting line, and the safety department at the company.
The next item on the list is the clean-up procedures. Only employees that have gone through the proper training are allowed to clean up chemical spills, if they are not trained they should find the nearest person with training. It is vital that the employees use the proper protective equipment while cleaning up spills. There is a maximum amount of chemical that an employee is allowed to pick up, in case the amounts are greater than the maximum they are instructed to call the responders on the emergency contact list.
When an employee spills a chemical they are instructed to evacuate the area unless they have training on how to clean it up. When cleaning up a spill, all cleanup materials should be treated as hazardous waste. Some materials used for clean-up are: Material Safety Data Sheets, absorbents, over-pack container, container patch kits, spill dams, shovels, floor dry, acid/base neutralizers, and “caution-keep out” signs.
Spills are classified in three different sizes: small, medium and large. A small spill is classified as a spill where the major dimension is less than 18 inches in diameter and can be handled by trained employees. Medium and large spills should be determined by the company if they are appropriate for the employees to clean up or not. Medium and large spills should be called in to the police and the area should be evacuated. There should also be a list of all chemicals used and the maximum amounts that are appropriate for employees to clean up and the proper way to dispose of it. On the plan there is a list of all materials and spill kits including the quantity and location of the materials. To make the locations completely clear, there should be a map of the area where everything is located.
All spills regardless of how small should be reported and have a form filled out. Spills should be reported to the Facility Responsible Person and they can decide if the effects of the spill could affect the environment outside of the facility.  



http://cms.bsu.edu/-/media/WWW/DepartmentalContent/Facilities/PDF/BSU%20Chemical%20and%20Biological%20Spill%20Control%20and%20Response%20Plan.pdf




Disposing of Chemical Waste and Unwanted Chemicals

Universities typically post the disposal of used and unwanted chemicals instructions on their Laboratory Reference Manual. An “unwanted” chemical has a very wide definition, it can mean a chemical that has not even been opened yet or a by-product from a chemical reaction or solvent. Sometimes this definition also extends to mean glassware or gloves that have come in contact with an unwanted chemical.
Before working with any chemical it is important to plan out how you will properly dispose of them with the least amount of environmental effects. There are many different ways to dispose of waste. Four common routes to dispose of waste are: have a Chemical Safety Office pick them up, throw them out in the normal trash, organize them from normal trash and pout them directly into the dumpster, and pour them in the sanitary sewer. If unsure about which method to use, the Chemical Safety Officer will recommend the best method depending on the chemical in question. The Environmental Health and Science Department will pick up chemicals, waste flammable solvents and by-products from reactions.
The vast majority of pure unwanted chemicals should go directly to the Chemical Safety Office. Typically, sewer disposal in the lab is allowed for small quantities (less than a liter) of specific types of chemicals. We saw this during out inspection of a lab, as long as the instructor said it was okay you can pour chemicals down the drain with the water running. If the water is not running, then it could cause the chemicals to aerosolize and create an unsafe condition for the people in the lab. No hazardous wastes - as defined by the EPA – can go down the drain. A hazardous waste is defined as a waste that is dangerous or potentially harmful to our health or the environment. 
Separate and throw away in the trash is for minimally contaminated waste that still poses a hazard risk to the average citizen because of the toxicity of the chemicals. While items in this section can go into a landfill with the regular trash, you want to ensure that staff that may have to empty the trash are not accidentally exposed. This area of trash should be collected in a trash bag separate from normal lab trash in your workplace and labeled with contents. When the bag is filled it should be placed in a sturdy box for disposal.
Items such as lab wipes, gloves and items not minimally contaminated with low hazard chemicals can go in the regular trash. Items such as glass should not go into the normal trash due to the potential danger it could cause to the custodial staff when changing the garbage cans.
When throwing away any chemicals it is important to make sure that any two chemicals are not incompatible with each other. If they are incompatible it could cause a dangerous reaction which could produce harmful by-products. For instance, never mix oxidizers with organic solvents, cyanides with acids, azides with acids or oxidizing reagents with reducing agents.