Birck Nanotechnology Center BNC 206 -- Cleanroom Training
Course Overview • Introductions • Cleanroom Specifications • Cleanroom Safety • Gowning • Policies and Equipment Training
The cleanroom of the Birck Nanotechnology Center is an amazing research laboratory. Conforming to ISO Class 3, 4, and 5 standards, particles within the cleanroom are minimized. The cleanroom is 25,252 square feet of space. To keep the level of particle contamination low, we need your help. You can minimize the generation of particles within the cleanroom by understanding and following the procedures and protocols outlined during this training. In order to minimize particle contamination (and increase research quality) within the cleanroom, access is limited to those whose work requires entry. Each user is required to swipe their own Birck badge for access into the cleanroom. Piggy backing on another users card is not allowed. Visitors may not enter the cleanroom, but are welcome to view the operation from the cleanroom tour aisle around the perimeter.
Prior to the actual face-to-face training session, there are a number of prerequisites you must perform. Sean Rinehart is the Birck Staff member administering the BNC206 Cleanroom Training, and needs to ensure you have performed the following prerequisites. Thus, please send the following pieces of information to srinehar@purdue.edu: • The name of your major professor • Your Coral Account ID • Your Career Account ID • The date you received BNC-105 General Building Orientation • The date you received BNC-150 Fume Hood Safety Training • The date you took the BNC-206 online quiz with an 80% passing score. After sending this information to Sean Rinehart, you may then register for a BNC-206 Cleanroom Training session.
Safety – Evacuating the Cleanroom While working in the cleanroom, it may become necessary to evacuate the building. When an alarm sounds: 1. Leave the cleanroom IMMEDIATELY using the nearest emergency exit. (There is an emergency exit at the end of every bay of the cleanroom) 2. Alert others that there is an emergency, and help them evacuate if necessary. 3. Proceed directly to the entrance of the Burton Morgan Center. Although you will be in your cleanroom gown, leave the cleanroom immediately. Do not take the time to take off your gown. Your safety is more important than the cleanroom gown. You may remove your gown once you are safely in the Burton Morgan Center. 4. Once you are safely out of Birck and in the Burton Morgan Center, you may remove your gown. Lorraine Fox will collect all the used gowns and launder them.
Choose the nearest route out of the cleanroom, then out of the building.
Emergency routes to Burton Morgan State Street Housing Burton Martin Jischke Drive Housing Morgan Housing Bindley Red = emergency exit Birck Nanotechnology Center
Safety – Chemical Safety While using hazardous process materials, you must wear the following Personal Protective Equipment (PPE) in addition to your cleanroom garment system. The PPE must be worn when you are working in the zone designated by the striped tape near the acid and solvent hoods. Hoods will be designated with a sign posted inside with its designation (acid or solvent), and the PPE required to work in that hood. There are 20 shower/eyewash stations in the cleanroom. When you are working in the cleanroom, you should take time to locate the nearest station. In the event of a chemical exposure, proceed directly to the station and rinse for 15 minutes. If you have any questions please contact the staff before trying something new.
Safety – Chemical Safety T here are two types of fume hoods in the cleanroom Solvent Hood Acid Hood - All plastic - Stainless Steel - Has a drain - Usually no drain
Safety – Hood Protocols • Never use acids & solvents in the same fume hood. • Never dispose of solvents down the drains in the hood. • Never reach with your hands into chemical solutions. • Use good chemical hygiene practices. • Do not work within the first four inches of the hoods, this space is needed for proper airflow. • Acids are disposed of in acid drains. • Solvents are captured for disposal. • A lways A dd A cid to solutions! • Work diligently to minimize chemical use. Don't pour 1 liter when 100 mL would be sufficient. • Please clean your work area before leaving. • Solvent soaked wipes-must be dried and disposed of before leaving the cleanroom. • Acid soaked wipes-Rinse with water, wring out, and throw away before leaving the cleanroom. • Beakers may not be left in the hood, anything left in the hood will be disposed of.
Safety – Hood Protocols Typical fume hood postings are presented in the next pages. Please read them! They will be posted in the back of a hood for your reference. When pouring from the gallon bottle to a beaker, goggles are required. When using any amount of HF acid (or BHF), a face shield is also required.
Safety – Solvent Hood PPE • You may use either the Ansell Latex Gloves or the thick orange gloves to work in a solvent hood. This is in addition to a pair of standard cleanroom gloves. • Clean room suits are fine for solvent protection within the cleanroom. (Thus you do not need an apron, although again you are welcome to wear one.) • Eye protection (full eye goggles) still required. • Never pour solvents down the drain. Place them in labeled waste containers. Now I’m ready to work in the hood! Note: I’m still missing my chemical goggles, so I can’t work in the hood yet!
Safety – Acid/Base Hood PPE As in all BNC Acid hoods, if you are inside the hood hazard zone you must wear the following Personal Protective Equipment (PPE): •Splash resistant goggles •Apron/Smock •Orange chemical resistant gloves •Face shield (when pouring from stock bottles or dealing with large quantities of acid).
Safety – Special Hazards • Laser Laboratories – The foremost concern is the danger to one’s eyes and exposed skin. The user must be trained and certified on working the laser and wear the appropriate eyewear protection. – Contact Jerry Shepard jshepar@purdue.edu for instructions on how to obtain laser safety training • Biology Laboratories – For biological hazards, special training is necessary. – Contact Guy Telesnicki gtelesni@purdue.edu for biological safety training • X-Ray sources – Go to: http://www.purdue.edu/rem for training dates/times.
Good Cleanroom Practices Working in a cleanroom requires patience and diligence. Users must take precautions to minimize contamination caused by their actions. The following are good practices while in the cleanroom: • Move slowly in the cleanroom. • Do not restrict the laminar airflow. That is, do not place anything above your sample such as your head, hands, arms, etc. • Bathe and change your clothes daily. • Trim long fingernails to avoid puncturing gloves. • Wear non-linting street clothes of cotton or polyester blend fabrics. • As a general rule, once an object enters the cleanroom then it stays in the cleanroom. The only exception is samples may be carried in and out in a clean container. • If you need to change your gloves, please return to the gowning room. • A buddy is required from 5pm to 8am while you are in the cleanroom regardless of your process. • Smokers should take a drink of water before entering the cleanroom.
Bad Cleanroom Practices The following activities generate particles and other contaminants (hurting facility research), and are not allowed in the cleanroom: • Do not run while in the cleanroom. Brisk walking is also not advisable. • Do not unzip your cleanroom suit while in the cleanroom. • Do not open the emergency exits unless during an evacuation. • Do not bring in non-cleanroom compatible materials (paper, pens, pencils, cardboard) • Food and drink are not allowed in the cleanroom. • Chewing gum or sucking mints are not allowed. • Do not go under the raised floor of the cleanroom. • Do not prop up your feet on a chair, table, or other raised surface. Feet belong on the floor. • If you have a cold, it is advisable to not go in the cleanroom.
Forbidden Items The following materials and items may not be brought into the cleanroom: • Laptop computers • Paper (other than cleanroom paper) • Research notebooks (other than issued cleanroom notebooks) • Cosmetics (make up, eye-liner, lipstick, mascara, cologne, perfume, etc) • Hairspray, hair gel, and other hair styling products • Old glassware used in other facilities • Totes, toolboxes, and • Wedding rings and jewelry is allowed, but rings with prongs or sharp edges should be avoided. • Note: Cell phones are now allowed in the cleanroom, but must be carefully wiped down in the gowning room each and every time prior to entry into the cleanroom.
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