Science Lab Safety & Hazardous Waste Training

Science Lab Safety & Hazardous Waste Training
Dawn Lee, Chemical Hygiene Coordinator for the Sciences x

Lab Personnel Training Topics
The Lab Standard Basics (OSHA, PESH) Chemical & Physical Hazards What they are Where to find info How to protect lab workers Emergency Procedures Fires Exposures/Injuries Spills Hazardous Waste Basics (EPA, DEC, MCWA)

Related Topics NOT covered here:
Bloodborne Pathogens (OSHA 29 CFR ) **Assume the worst – use Universal Precautions** Laser Safety Radiation Safety Biohazard Safety

“The Laboratory Standard”
Occupational Exposure to Hazardous Chemicals in Laboratories (29 CFR ) Hazardous Chemical – any evidence that acute or chronic effects occur due to exposure Laboratory – small quantities of hazardous chemicals containers that are easily manipulated by one person protective practices and equipment are in common use

Lab Standard Cont’d Permissible Exposure Limits [1910.1450(c)]
Tables Z-1 & Z-2 & Z-3 (mineral dusts) Employee Exposure Determination [ (d)] Initial, periodic & termination of monitoring Chemical Hygiene Plan (CHP) [ (e)] Written plan designed to protect laboratory employees Some mandatory elements Suggested specifics in Appendix A

Lab Standard Cont’d Employee Information & Training [1910.1450(f)]
Initial and refresher The Standard The CHP PELs & other exposure limits (TLVs) Exposure Symptoms MSDS & other reference materials Monitoring devices – mechanical & observational Physical & health hazards Measures for protection (practices, PPE, emergency procedures)

Lab Standard Cont’d Medical Consultation & Examination [1910.1450(g)]
If symptoms develop due to exposure If exposure levels are regularly above limits If a spill, leak, explosion, etc. occurs Details on results of such consultations/examinations Hazard Identification [ (h)] Mfg. labels should not be removed or defaced (until bottle is empty) MSDS maintenance Substances created in the lab Determine hazards and provide appropriate training/info If composition is unknown – assume hazardous & defer to CHP If produced for others – defer to Hazard Communication Standard (labeling, MSDS generation)

Lab Standard Cont’d Respirators [1910.1450(i)]
Recordkeeping [ (j)] Appendices Recommendations Concerning Chemical Hygiene in Laboratories References

The Chemical Hygiene Plan (CHP)
Written plan to protect lab employees Must be readily available ( CH Responsibilities Individual Labs - adopt this plan or write your own – requires approval by EHS Chemical Hygiene Officer (CHO) –Dave Turkow Chemical Hygiene Coordinator for the Sciences (CHC) – consultant and liaison b/t science & EHS – Dawn Lee Review annually

CHP -SOPs for use of hazardous chemicals
Describes hazards & safeguards for handling General Guidelines Prudent Practices ( Safety in Academic Laboratories Volumes 1 & 2 (ACS) ( Research Labs – PI responsibility Teaching Labs - lab manuals, syllabus CHC will develop generic SOPs and assist in generation of specific SOPs as needed

CHP - Control Measures to Reduce Exposures
Engineering controls Ventilation/Fume hoods Proper storage facilities Personal Protective Equipment (PPE) Individual responsibility – EHS assistance Any potential for chemical splash requires indirectly vented chemical splash goggle Good Laboratory Hygiene/General Practices Cite Prudent Practices & ACS publications Specific Laboratory Practices Chemistry Laboratory Safety Regulations or adopt own Develop SOPs for “particularly hazardous chemicals” – EHS assistance Other Services Provided Exposure monitoring, eyewash/shower stations, emergency procedures

Fume Hoods & Other Protective Equipment
CHP cont’d Fume Hoods & Other Protective Equipment Hoods certified & inspected annually (Bio cabinets not included) Eyewashes/showers activated monthly Fire extinguisher inspections Spill response equipment Information & Training Every 2 year minimum Individual lab maintains access to MSDSs EHS assistance & consultation

CHP cont’d Prior Approval for High Hazard Work
Individual responsibility to identify Departmental approval/SOP EHS/CHC provides consultation Medical Consultations (per the Standard) Provisions for Protection for Work with Particularly Hazardous Substances May require prior review Designated areas Containment devices (fume hoods, glove boxes) Safe removal of contaminated waste Decontamination procedures

What are the chemical hazards?
Flammability Toxicity Reactivity

Flammability Solid, liquid or gas
Hydrocarbons (especially with 9Cs or less) Many alcohols, ketones and ethers Some inorganic metals (K & Na) Metal dusts Volatility – rate at which a material evaporates Lower boiling point  higher volatility  more flammable Flash Point - lowest temperature at which a liquid has a vapor pressure that forms an ignitable mixture with air near the surface of the liquid Lower Flash Point  Greater Hazard Flashback –vapors extend away from the source and find ignition Higher Volatility/Lower Flash Point  more risk of flashback Flashback Example

Fire Prevention Proper storage of flammable chemicals
Tight caps Flammable cabinets and refrigerators Away from ignition/heat sources Proper electrical grounding of equipment Bonding & grounding when transferring chemicals Alternate heating methods (water baths) Procedures – T & P, mixing, formation of aerosols

“RACE” Fire Plan rescue/ remove – persons from the immediate area of fire/smoke alert/alarm – activate nearest fire alarm system, call UP at x2222 confine/close – confine fire/smoke by closing all doors extinguish/evacuate – extinguish fire if safe to do so by using the appropriate extinguisher/evacuation plan! RACE

P A S S Fighting the Fire Pull the pin Aim low at the base of flames
Squeeze the handle Fire Extinguisher Demo S Sweep side to side

Reactivity Oxidizers – able to donate or promote oxygen
(chromates, nitrates, permanganates, perchlorates, peroxides, etc.) Water Reactive – reaction with water releases toxic gases, heat, O2 or H2 (CN-1 and S-2 salts, IA & IIA metals (Li, Na, K, Ca), organometallics, diluting acids/bases - always add acid/base to H2O, etc.) Pyrophore - ignites with air contact (finely powdered Zn, Mg, P, C, organometallics, etc.) Explosive – goes boom (C=C, C-N, nitro groups, azides, metal-N bonds, epoxides, etc.) Dryness sensitivity (picric acid, nitrogen triiodide, organic peroxides) Unstable liquid - will vigorously polymerize, decompose, condense, or become self-reactive under conditions of shocks, pressure, or temperature (styrene, vinyl chloride, etc.)

Reactive Issue Prevention
Segregate Incompatible Chemicals Charts (Prudent Practices, Flinn, RCRA) Golden Rules – segregate Oxidizers from everything! (inc. HOAc & HNO3) acids and bases acids and metals corrosives and organics flammables and reactives

Auto-oxidation – Formation of Explosive Peroxides
Most common: Diethyl ether MIBK Furan Alkenes Isopropanol THF General Info on Peroxide formation Stabilizers/inhibitors often added (free radical scavengers) Date upon receipt and when opened Test for peroxide formation every 3-6 months – test strips available. Adhere to Expiration Dates Concentrating procedures such as evaporation or distillation. Sources of Friction…unscrewing a lid, popping out a glass stopper, grinding solids with glass rods or spatulas

Toxicity Toxic Chemical: a chemical that will cause damage when it is in contact with a susceptible cite “The dose makes the poison.” (dose x exposure time) Acute vs. Chronic, Local vs. Systemic Toxic vs. Highly Toxic (50 mg/kg) LD50 (lethal dose) - the dose of chemical that when injected, ingested or applied to skin of test animal, 50% of those animals die LC50 (lethal concentration) - the concentration of a chemical in the air that will kill 50% of test animals Permissible Exposure Limit (PEL) - the concentration limit of a chemical in air in which most workers (interpreted as avg. 150 lb, healthy males) can be exposed during a normal work week without adverse effects (OSHA) Threshold limit value (TLV) -analogous to PEL - ACGIH assigns – recommendation, not regulatory – more current

Irritants (lots of inorganic & organic compounds)
Generally reversible effects itching, mild burning, swelling, coughing, slight headache Examples: NaCl, acetone Corrosives (strong acids, bases, oxidizers) Sometimes reversible, sometimes irreversible tissue damage itching, burning, tissue decay, ulcers, swelling, coughing, headache Examples: HCl, H2SO4, HF, NaOH, NH4OH, Br2, Cl2

Allergens/sensitizers
First exposure may show little or no symptoms Changes to tearing, swelling, and other irritations, but can lead to death Examples: latex, formaldehyde, acrylates Asphyxiants Displaces O2 from lungs or blood cells Dizziness, loss of consciousness, coughing/wheezing Examples: CO2, Ar, He, N2, CO, HCN Carcinogens Generally due to chronic exposure NTP, IARC, OSHA lists Examples: benzene, Cr(VI), Cd, As, dichloromethane, chloroform Reproductive/Developmental/Specific organ or system toxins Directly affects specific bodily functions (reproductive, kidney/liver, CNS, blood cells) Examples: Pb, Hg, toluene, aspirin

Chemical Hazard Risk Assessment
Risk assessment is YOUR responsibility CHC available to assist Assess chemical hazards using references MSDS & Labels Chemsafe website Bretherick’s, Merck, RTECS, etc. Assess procedures - hazards of chemicals may change due to procedure (heating, pressure, mixing, aerosol formation, etc.)

Material Safety Data Sheets (MSDS)
MUST BE READILY AVAILABLE Chemicals that are being reordered Should be shipped with or before the chemical If you fail to receive the MSDS for a new chemical, contact CHC Always review before using a new chemical! Concerns? Call CHC! Find them online

MSDS contents 1. Product Identification – supplier info, chemical name, synonyms, CAS#, formula 2. Composition - List of ingredients, % composition, CAS #’s 3. Hazards Information - Emergency overview summarizing physical & health hazards 4. First Aid Measures – first responder info for specific exposure routes 5. Fire Fighting Measures – flammability data, fire extinguishing medium, hazardous products generated due to fire, suggested firefighting PPE 6. Accidental Release Measures – usually generic, some regulatory info, what adsorbent to use, containment, PPE, evacuation procedures, etc. 7. Handling and Storage – specific storage needs and general precautions 8. Exposure Controls/Personal Protection - exposure limits (PEL, TLV), PPE 9. Physical/Chemical Properties - bp, mp, color, state, vapor P, solubility, etc.

MSDS contents cont’d 10. Stability and Reactivity - Chemical stability (could be T dependent), decomposition products, incompatibles, polymerization, conditions to avoid 11. Toxicological Information (animal) - LD50, LC50, carcinogenicity, reproductive effects, etc. 12. Ecological Information - Environmental fate should the substance be introduced to the environment (water, air, soil), more tox data for plants/animals here 13. Disposal Considerations – very generic – default to RCRA and local regulations 14. Transport Information - Shipping regulatory info 15. Regulatory Information - Summary of codes to identify the substance’s characteristics according to multiple governmental agencies 16. Other/Additional Information –NFPA codes, label information, common usage

Container Labels Keep mfg. labels on where possible – they SHOULD be compliant, BUT old bottles are not grandfathered Mfg. and 2° Labels SHOULD have: Name of chemical (not symbols) Hazard warnings (any combo of words/pictograms) Specific physical/health hazards, including target organs (1994) Responsible party contact info in English and legible “batch” labeling can be done Employees must have access to complete list Other criteria fulfilled Not necessary to label portable containers to be used “immediately” Defacing a label is prohibited – scrape it off if reusing

Labeling - NFPA Diamonds
Color coded, numerical rating system Sometimes on labels Provide at-a-glance hazard information Flammable/Reactive info is usually good Health info not as good FLAMMABILTY HEALTH REACTIVITY SPECIAL INFO

NFPA Diamonds Cont’d 4= Deadly Hazard 3= Severe Hazard
2= Moderate Hazard 1= Slight Hazard 0= No Hazard W = water reactive OX = oxidizer

Labeling – HMIS System Designed for everyday work with chemicals
Number rating system – similar to NFPA Includes designation for PPE

Routes of Exposure - Inhalation
Inhalation of vapors, mists, dusts, etc. Open containers Opening/closing microtubes Open centrifuges Heating Doing dishes Inoculating loops Syringes Sweeping Local and systemic effects – depends on solubility Use fume hoods!

Routes of Exposure Skin/Eyes
Contact with skin or eyes Usually due to accidental spills Effects largely based on tissue condition Dry vs. moist Cuts & abrasions Location – thickness varies – worst in eyes, at groin, between fingers/toes Local and systemic effects – depends on solubility Wear chemical splash safety goggles & gloves!

Route of Exposure – Ingestion
Usually accidental - bad hygiene Local or systemic effects – depends on solubility NEVER eat, drink or chew gum in a lab! NEVER put your mouth on anything in lab! (pipetting!) NEVER store anything you intend to ingest in the same room with hazardous chemicals DO NOT store chemicals in food containers or v/v WASH your hands frequently and always when you leave lab Avoid spreading contamination – remove your PPE before you leave lab

Routes of Exposure – Injection
Most dangerous, least likely Broken glassware is biggest culprit Syringes, razor blades, etc. Biohazard vs. Chemical Sharps Containers!

Signs of Exposure External Internal Longer Term Toxic Response
itching/rash/swelling change in breathing/sneezing/coughing discoloration of skin mucous vomiting Internal pain/headache queasy taste irritation to nose/throat dizziness Longer Term Toxic Response organ function/size cell/tissue alteration biochemical changes behavioral changes

Exposure Prevention Know & understand the hazards of the chemicals and processes – if hazards unknown – assume the worst Substitute less hazardous chemicals and techniques Scale down experiments Use proper PPE & engineering controls DO NOT work alone in the laboratory – at least make others aware of your presence! Use common sense!

Personal Protective Equipment (PPE)
Eye Protection Gloves Clothing

Eye Protection Indirectly Vented Goggles The best option!
Mandatory if risk of chemical splash– even if it is someone else causing it! Glasses with side shields – may be appropriate when Entering a lab with no chemicals being used directly Instrument rooms where no or minor amounts of contained chemicals are being used Where impact of large particles is the only issue Doing dishes Face shields – Use when extra face and neck protection is desired Face shield is not adequate alone – also need goggles underneath!

Other Eye Protection Issues
Prescription eyewear is not usually impact resistant, so it fails to meet ANSI Z-87 requirements Must have tempered glass with side shields Contact lenses are ok to be worn in lab, but is in no way considered protective – must wear goggles! A fume hood sash does not count as eye protection

Glove Types Disposables Chemical Resistant Cut Resistant
Voltage Resistant General Purpose Temperature Resistant

Use the Right Glove for the Job
Glove material charts (chemsafe website) Latex – not meant for chemical resistance Vinyl – aqueous solutions, alcohols Nitrile – non-halogenated solvents Neoprene Rubber Keep in mind – time of direct exposure

Safe Glove Practices Inspect gloves for pinholes
Avoid immersion or prolonged direct exposure to hazardous chemicals Be aware of what you are touching with you contaminated gloves – keep “lab pens” Discard or wash after use Wash hands after use Removal

Protective Clothing Full Coverage Clothing
less exposed skin, less chemical exposure worst to have midsection & upper thigh exposed Lab Coats & Aprons – choose the material to match the job Closed Toe Shoes Leather uppers Glassware/physical hazards and chemical exposure Jewelry - watches and rings can trap chemicals

Engineering Controls: Chemical Fume Hood
Air flows through the face and out the vents in back Factors that affect airflow: Sash Height Drafts Bulky objects inside

Fume Hoods General Rules
fpm Work ~6” inside opening Sash height Avoid turbulence (movement, doors/windows) Do not overload with chemicals/equipment Always use with volatile chemicals Not to be used as eye protection!

First Aid & Chemical Exposure Procedures
“The College at Brockport Science Departments Procedures for Injured Students, Visitors, & Employees” Standard First Aid for cuts, burns, etc. Hazen/personal physician vs Lakeside UP – x2222 or on cell phone Also covers exposure treatment Accident Report On chemsafe website

Emergency Response Equipment
Ask yourself: Do I know where they are located? Do I know how to use? Do I know that they work? Are they accessible?

Treatment for Dermal Exposure
Rinse with tepid water for a minimum of 15 min. Small Area vs. LARGE Area Call UP (x2222) – Provide MSDS In all cases: Remove jewelry/watches and any contaminated clothing (including socks/shoes if shower is used!) Avoid spreading contamination – especially to the eyes! Cut off clothing if necessary! Pull the MSDS(s)– look for any special treatment and/or warnings about delayed reactions - Hazard Info & First Aid (sections 3 & 4) NEVER apply neutralization solutions to acid/base exposures NEVER apply creams, lotions, or sprays.

Dermal Exposure Follow up
If no further irritation arises - the area can be washed with soap and water Mild irritation can be left exposed to the air after rinsing If the irritation gets worse or MSDS states that medical attention should be sought immediately Physician UP (x2222) to arrange for immediate transportation to Lakeside Hospital – provide MSDS Report all exposures to CHC Fill out accident report

Treatment for Chemical Contact With Eyes
Flood the eyeballs with water for minutes Force eyelids open using the thumb and forefinger Roll the eyeballs in all directions to allow water to rinse behind the eyeball and lids. Remove contact lenses to ensure rinsing behind them. Eyes can be covered with a dry, sterile material if desired. ALWAYS seek medical attention Report all exposures to CHC  Accident Report ~~If an eyewash is not available, lay the injured party on their back, force the eyelids open, and gently pour clean water into the corners of the eyes.~~

Treatment for Chemical Ingestions
Contact UP immediately at x2222. Send MSDS with the injured party for emergency responders. Often the MSDS will suggest fluids. DO NOT attempt to pour fluids down an unconscious person’s mouth If no head, neck or spinal damage, it may be advised to rotate the body to the side in case of vomiting. “DO NOT induce vomiting” unless the chemical is extremely toxic and will move to the blood stream very quickly. Mouth-to-mouth resuscitation may result in contamination of responder Report all exposures to CHC  accident report

Treatment for Chemical Inhalation
Evacuate the area if there is a risk of exposure to others. Remove the injured party from the area and into fresh air. Often, fresh air or oxygen gas will ease the symptoms, but further medical attention is usually advised. Call UP at x2222 if fresh air is not enough or if multiple people exposed Send MSDS with injured party for emergency responders Mouth-to-mouth resuscitation may result in contamination of responder Report all exposures to CHC  accident report

Chemical Spill Kit Each lab must have its own general kit.
Benchtop Kit The type of kit needed is a function of the type and volume of chemicals present in the lab. If specialty kits necessary – see CHC Include gloves, goggles and a lab coat in or near your kit. 5-gallon Bucket Kit

Pull the FIRE ALARM (only laboratory personnel) LEAVE the building
Do you know the spilled chemical material’s identity? Yes No Call EMERGENCY CONTACTS in order Immediate health or safety concern? (symptoms of exposure, fire or reactive hazard, etc.) Yes No Greater than 2.5 liters? No ISOLATE ATTEND to INJURIES EVACUATE the room CLOSE the door Pull the FIRE ALARM (only laboratory personnel) LEAVE the building CALL UP immediately (x2222 or ) ARRANGE meeting place with UP REGROUP Use appropriate SPILL KIT Dispose materials as hazardous waste If chemicals considered non-hazardous, clean using an inert absorbent (kitty litter, paper towels, sponge, etc.) as appropriate. Yes Call EMERGENCY CONTACTS in order

Emergency Evacuations
Equipment Set-ups Water/heating/cooling systems Close fume hoods Notify UP of situation

New Chemical Purchase Have you assessed the hazards before purchasing?
Is there a less hazardous substitution? Do you have a proper storage place for this chemical? Don’t buy anymore than necessary purchasing form to CHC prior to purchase Will make sure there is not already an available source Inventory Need for SOP, special training, PPE, or first aid/spill equipment

Chemical Name (please type out full chemical name )
Please fill out the following information and to Dawn Lee before or at the time of ordering any chemicals Chemical Name (please type out full chemical name ) CAS # (available in catalog) Manufacturer Catalog # size of bottle # of bottles Date ordered person ordering Building/Room Chemical will be Stored Method of Purchase (PO, Research, credit card)

special provisions required
For CHC use only special provisions required barcode printed

Chemical Storage NO chemicals higher than shoulder level or on the floor ABC method – Incompatibles! Flammable Cabinets Unless immediately in use, store in designated cabinets Limit flammables stored in any one cabinet & any one lab Corrosive Cabinets Use for acids or bases, but not together Nitric acid & organic acids (Acetic acid!) should be stored separate from one another Refrigerators household vs. flammable vs. explosion proof Use secondary containment to limit vapor build-up Auto-oxidizers Inventory

Step 1: Determine what your wastes are
Chemical Waste Disposal Step 1: Determine what your wastes are Any chemical that has been used and is no longer considered useful Any chemical you want to throw away Any reagents that are: - old - out-dated - left-over - otherwise useless

Chemical Waste Disposal
Step 2: Make a Hazardous Waste Determination A chemical waste is a “hazardous waste” if it exhibits any of the following characteristics: Ignitability Liquid flash point < 140°F (60°C) (exception: <24% alcohol) Ignitable solids & gases Corrosivity - pH is < 4.0 or > 10 Elemental neutralization is allowed - recordkeeping Reactivity – reacts with water, can form potentially toxic gases, is unstable or explosive. Toxicity –EPA’s D-list of “toxic” chemicals

Step 2: Make a Hazardous Waste Determination Cont’d A chemical waste is a “hazardous waste” if it appears on one of the following RCRA lists: B-list – PCBs (NYSDEC Regulation) U-list – toxic chemicals P-list – acutely toxic chemicals F-list – spent solvent mixtures OR chemicals you just know are BAD

Step 3: Satellite Accumulation Container Compatible and in good condition Has “tight-fitting” closure Label (4 things): Words “hazardous waste” Name of chemical(s) Main Hazard(s): Toxic, Reactive, Ignitable, Corrosive Date FULL/removed Secondary Containment Must segregate incompatibles One container per waste stream

Packaging Hazardous Waste - General
LABELING - remove any old labels, small vials/bottles COMPATIBILITY! ALWAYS keep container tightly closed when not in use! The right size for the right job Keep the bottle clean – wipes for P-listed chemicals now haz waste Allow head space for vapor expansion Store only in safe & secure areas Store only at the “Point of Generation” If mixtures involved, record approximate % comp. Limits on amounts ALL spills with hazardous chemicals are hazardous waste!

Hazardous Waste Tags HAZARDOUS WASTE Bottle Code___________
Print Building & Your Name:_______________________ Room No.________ Phone:_________ Total Amount in Container:__________ Container Size:_________Dept:________________ COMPLETE CHEMICAL COMPOSITION: (List approximate % of each constituent including water/solvent) 1. ____________________________% ___________________________% 2. ____________________________% 7. ___________________________% 3. ____________________________% 8. ___________________________% 4. ____________________________% 9. ___________________________% 5. ____________________________% 10.___________________________%. Check if applicable: __ Flammable __ Corrosive (pH ___) __ Oxidizer __ Highly Toxic ___ Stench __ Reactive (__ Water___Shock ___Other ______________) To the best of my knowledge, I certify the information provided is accurate and the hazardous waste generated has been minimized. Sign & date when moved to Central Storage. Sign Name:___________________________________ Date:_____________

Mixed Haz Waste Manifest (pg. 1)
Hazardous Waste Organic Liquid Flammable General Contents: For EXACT composition, refer to log sheet _______ Room: Satellite Accumulation Start Date:

Organic Liquid Hazardous Waste Only SUNY College at Brockport Room ________ Name of Person Responsible______________ Bottle Code_____ Date Generated Chemical Composition Volume Signature Date Bottle Filled:______________________Total Volume:_________________ Date Bottle Removed to Central Storage:_________________

Please attach this sheet to the hazardous waste bottle upon removal to Central storage. The detailed profile should be retained by the faculty member/department. Summary of Hazardous Waste Profile: *Hazardous characteristic categorized as ignitable, corrosive, reactive, toxic, acute hazard or other special traits such as oxidizer or poison Total Volume Chemical Hazardous characteristic(s)* Room Collected: __________ Name of Person Responsible______________________ Date Bottle Filled:____________ Total Volume:_________________ Date Bottle Removed to Central Storage:__________

Step 4: Central Storage Secure Proper Label (white copy of EHS labels) Contact for removal from lab: CHM Beth Gregory or Individual PI BIO  Dawn Newman or Dawn Lee ENV  Hilary Richardson or Dawn Lee ESC, PHS  Dawn Lee NO reactives in Central Storage – contact CHC if reactive chemical Add yellow Hazardous Waste sticker Copy of tag or 2nd pg. of manifest in drop box in bunker

Other General Haz Waste Issues
No evaporation of solvents up the fume hood Mixture rule (including saturated paper, filtering aides, etc.) Generally NO treatment of waste Students can perform as part of procedure Elemental neutralization – log sheets - reporting Waste oil – haz vs. non-haz Old chemicals – get rid of them! RCRA Empty Chemical removed by conventional means – no more than 3% by weight of total capacity P-listed waste – 3x rinse – dispose of all as haz waste

Reuse or Disposal of Empty Bottles
In ALL cases Inform CHC of the empty bottle, so it can be removed from inventory If reusing Rinse clean with appropriate solvent if necessary Remove mfg. label, and add a new, compliant label Compatibility! If disposing All glass (whole or broken) to be disposed of should be collected separately from paper waste All glass to be disposed of should be rinsed clean/delabeled Collect glass in a sturdy cardboard box labeled “Broken Glass” Seal the box well with packing tape and dispose

Universal Waste Categories Rules
Lamps Batteries (other than alkaline) Mercury containing devices (unbroken) Pesticides Rules Closed containers Labeling IF you have these, contact CHC for details on disposal

Lab Security Practical & legal issue
Lock doors when no one is in the lab Limit key distribution Particularly hazardous chemicals – 2° security

Physical Hazards in the Lab
Gas Cylinders Cryogens Electrical Temperature Pressure Work Glassware Refrigerators Centrifuges Tripping & falling objects

Gas Cylinders Gases are chemicals
Chemical Hazards – flammable, corrosive, explosive Asphyxiation Ventilation & PPE Labeling Shut off cylinder valve – Leaks Physical Hazards - Treat with respect High pressure can create a rocket NO homemade connectors to alter valves, fittings, or regulators Transport on a secured cart – do not roll or drag Secure gas cylinders when in storage or use

Cryogens Same issues as compressed gas cylinders plus…
Liquid O2 can be condensed out of air - Liquid O2 can be very dangerous – keep away from organic matter and flammable gases Extreme cold (effect on flesh as well as materials that can become brittle) Transfer from one container to another Minimum of indirectly vented goggle – suggested face shield and full body coverage advised Transfer slowly Check hosing and containers used for transfers regularly

Electricity in the Lab Do not use 2 prong plugs
Remove any damaged cords and replace No bare wires EVER! Do not overload circuits Do not use extension cords as permanent set-up Do not use any sparking electrical equipment around flammable vapors Special stirring motors, heaters, refrigerators Never bypass electrical safety equipment Try to keep electrical sources away from water

Phone Numbers/Websites
Anytime you think you should call 911, call University Police x2222 Dawn Lee, CHC x5873 Dave Turkow, EHS Director &CHO x2005 Sarah Klein, EHS Assistant Director x2495

New Equipment Purchases
Do you have the space to operate safely? Special electrical, heating, cooling, ventilation needs? Special PPE? Radioactive or laser sources? Safeguards available for any physical hazards? Safeguards available for any chemical hazards (used in the operation of the equipment)?

Science Lab Safety & Hazardous Waste Training

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