1 Science Lab Safety & Hazardous Waste Training Dawn Lee, Chemical Hygiene Coordinator for the Sciences x 5873
2 Lab Personnel Training Topics The Lab Standard Basics (OSHA, PESH)Chemical & Physical HazardsWhat they areWhere to find infoHow to protect lab workersEmergency ProceduresFiresExposures/InjuriesSpillsHazardous Waste Basics (EPA, DEC, MCWA)
3 Related Topics NOT covered here: Bloodborne Pathogens (OSHA 29 CFR )**Assume the worst – use Universal Precautions**Laser SafetyRadiation SafetyBiohazard Safety
4 “The Laboratory Standard” Occupational Exposure to Hazardous Chemicals in Laboratories (29 CFR )Hazardous Chemical – any evidence that acute or chronic effects occur due to exposureLaboratory –small quantities of hazardous chemicalscontainers that are easily manipulated by one personprotective practices and equipment are in common use
5 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 monitoringChemical Hygiene Plan (CHP) [ (e)]Written plan designed to protect laboratory employeesSome mandatory elementsSuggested specifics in Appendix A
6 Lab Standard Cont’d Employee Information & Training [1910.1450(f)] Initial and refresherThe StandardThe CHPPELs & other exposure limits (TLVs)Exposure SymptomsMSDS & other reference materialsMonitoring devices – mechanical & observationalPhysical & health hazardsMeasures for protection (practices, PPE, emergency procedures)
7 Lab Standard Cont’d Medical Consultation & Examination [1910.1450(g)] If symptoms develop due to exposureIf exposure levels are regularly above limitsIf a spill, leak, explosion, etc. occursDetails on results of such consultations/examinationsHazard Identification [ (h)]Mfg. labels should not be removed or defaced (until bottle is empty)MSDS maintenanceSubstances created in the labDetermine hazards and provide appropriate training/infoIf composition is unknown – assume hazardous & defer to CHPIf produced for others – defer to Hazard Communication Standard (labeling, MSDS generation)
8 Lab Standard Cont’d Respirators [1910.1450(i)] Recordkeeping [ (j)]AppendicesRecommendations Concerning Chemical Hygiene in LaboratoriesReferences
9 The Chemical Hygiene Plan (CHP) Written plan to protect lab employeesMust be readily available (http://www.brockport.edu/ehs/intrnl.html)CH ResponsibilitiesIndividual Labs - adopt this plan or write your own – requires approval by EHSChemical Hygiene Officer (CHO) –Dave TurkowChemical Hygiene Coordinator for the Sciences (CHC) – consultant and liaison b/t science & EHS – Dawn LeeReview annually
10 CHP -SOPs for use of hazardous chemicals Describes hazards & safeguards for handlingGeneral GuidelinesPrudent Practices (http://www.nap.edu/openbook.php?isbn= )Safety in Academic Laboratories Volumes 1 & 2 (ACS) (http://membership.acs.org/c/ccs/publications.htm)Research Labs – PI responsibilityTeaching Labs - lab manuals, syllabusCHC will develop generic SOPs and assist in generation of specific SOPs as needed
11 CHP - Control Measures to Reduce Exposures Engineering controlsVentilation/Fume hoodsProper storage facilitiesPersonal Protective Equipment (PPE)Individual responsibility – EHS assistanceAny potential for chemical splash requires indirectly vented chemical splash goggleGood Laboratory Hygiene/General PracticesCite Prudent Practices & ACS publicationsSpecific Laboratory PracticesChemistry Laboratory Safety Regulations or adopt ownDevelop SOPs for “particularly hazardous chemicals” – EHS assistanceOther Services ProvidedExposure monitoring, eyewash/shower stations, emergency procedures
12 Fume Hoods & Other Protective Equipment CHP cont’dFume Hoods & Other Protective EquipmentHoods certified & inspected annually (Bio cabinets not included)Eyewashes/showers activated monthlyFire extinguisher inspectionsSpill response equipmentInformation & TrainingEvery 2 year minimumIndividual lab maintains access to MSDSsEHS assistance & consultation
13 CHP cont’d Prior Approval for High Hazard Work Individual responsibility to identifyDepartmental approval/SOPEHS/CHC provides consultationMedical Consultations (per the Standard)Provisions for Protection for Work with Particularly Hazardous SubstancesMay require prior reviewDesignated areasContainment devices (fume hoods, glove boxes)Safe removal of contaminated wasteDecontamination procedures
14 What are the chemical hazards? FlammabilityToxicityReactivity
15 Flammability Solid, liquid or gas Hydrocarbons (especially with 9Cs or less)Many alcohols, ketones and ethersSome inorganic metals (K & Na)Metal dustsVolatility – rate at which a material evaporatesLower boiling point higher volatility more flammableFlash Point - lowest temperature at which a liquid has a vapor pressure that forms an ignitable mixture with air near the surface of the liquidLower Flash Point Greater HazardFlashback –vapors extend away from the source and find ignitionHigher Volatility/Lower Flash Point more risk of flashbackFlashback Example
16 Fire Prevention Proper storage of flammable chemicals Tight capsFlammable cabinets and refrigeratorsAway from ignition/heat sourcesProper electrical grounding of equipmentBonding & grounding when transferring chemicalsAlternate heating methods (water baths)Procedures – T & P, mixing, formation of aerosols
17 “RACE” Fire Planrescue/ remove – persons from the immediate area of fire/smokealert/alarm – activate nearest fire alarm system, call UP at x2222confine/close – confine fire/smoke by closing all doorsextinguish/evacuate – extinguish fire if safe to do so by using the appropriate extinguisher/evacuation plan!RACE
18 P A S S Fighting the Fire Pull the pin Aim low at the base of flames Squeeze thehandleFire Extinguisher DemoSSweep side to side
19 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.)
20 Reactive Issue Prevention Segregate Incompatible ChemicalsCharts (Prudent Practices, Flinn, RCRA)Golden Rules – segregateOxidizers from everything! (inc. HOAc & HNO3)acids and basesacids and metalscorrosives and organicsflammables and reactives
21 Auto-oxidation – Formation of Explosive Peroxides Most common:Diethyl ether MIBK FuranAlkenes Isopropanol THFGeneral Info on Peroxide formationStabilizers/inhibitors often added (free radical scavengers)Date upon receipt and when openedTest for peroxide formation every 3-6 months – test strips available.Adhere to Expiration DatesConcentrating procedures such as evaporation or distillation.Sources of Friction…unscrewing a lid, popping out a glass stopper, grinding solids with glass rods or spatulas
22 ToxicityToxic 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. SystemicToxic 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 dieLC50 (lethal concentration) - the concentration of a chemical in the air that will kill 50% of test animalsPermissible 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
24 Allergens/sensitizers First exposure may show little or no symptomsChanges to tearing, swelling, and other irritations, but can lead to deathExamples: latex, formaldehyde, acrylatesAsphyxiantsDisplaces O2 from lungs or blood cellsDizziness, loss of consciousness, coughing/wheezingExamples: CO2, Ar, He, N2, CO, HCNCarcinogensGenerally due to chronic exposureNTP, IARC, OSHA listsExamples: benzene, Cr(VI), Cd, As, dichloromethane, chloroformReproductive/Developmental/Specific organ or system toxinsDirectly affects specific bodily functions (reproductive, kidney/liver, CNS, blood cells)Examples: Pb, Hg, toluene, aspirin
25 Chemical Hazard Risk Assessment Risk assessment is YOUR responsibilityCHC available to assistAssess chemical hazards using referencesMSDS & LabelsChemsafe websiteBretherick’s, Merck, RTECS, etc.Assess procedures - hazards of chemicals may change due to procedure (heating, pressure, mixing, aerosol formation, etc.)
26 Material Safety Data Sheets (MSDS) MUST BE READILY AVAILABLEChemicals that are being reorderedShould be shipped with or before the chemicalIf you fail to receive the MSDS for a new chemical, contact CHCAlways review before using a new chemical!Concerns? Call CHC!Find them online
27 MSDS contents1. Product Identification – supplier info, chemical name, synonyms, CAS#, formula2. Composition - List of ingredients, % composition, CAS #’s3. Hazards Information - Emergency overview summarizing physical & health hazards4. First Aid Measures – first responder info for specific exposure routes5. Fire Fighting Measures – flammability data, fire extinguishing medium, hazardous products generated due to fire, suggested firefighting PPE6. 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 precautions8. Exposure Controls/Personal Protection - exposure limits (PEL, TLV), PPE9. Physical/Chemical Properties - bp, mp, color, state, vapor P, solubility, etc.
28 MSDS contents cont’d10. Stability and Reactivity - Chemical stability (could be T dependent), decomposition products, incompatibles, polymerization, conditions to avoid11. 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 here13. Disposal Considerations – very generic – default to RCRA and local regulations14. Transport Information - Shipping regulatory info15. Regulatory Information - Summary of codes to identify the substance’s characteristics according to multiple governmental agencies16. Other/Additional Information –NFPA codes, label information, common usage
29 Container LabelsKeep mfg. labels on where possible – they SHOULD be compliant, BUT old bottles are not grandfatheredMfg. 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 doneEmployees must have access to complete listOther criteria fulfilledNot necessary to label portable containers to be used “immediately”Defacing a label is prohibited – scrape it off if reusing
31 Labeling - NFPA Diamonds Color coded, numerical rating systemSometimes on labelsProvide at-a-glance hazard informationFlammable/Reactive info is usually goodHealth info not as goodFLAMMABILTYHEALTHREACTIVITYSPECIAL INFO
32 NFPA Diamonds Cont’d 4= Deadly Hazard 3= Severe Hazard 2= Moderate Hazard1= Slight Hazard0= No HazardW = water reactiveOX = oxidizer
33 Labeling – HMIS System Designed for everyday work with chemicals Number rating system – similar to NFPAIncludes designation for PPE
34 Routes of Exposure - Inhalation Inhalation of vapors, mists, dusts, etc.Open containersOpening/closing microtubesOpen centrifugesHeatingDoing dishesInoculating loopsSyringesSweepingLocal and systemic effects – depends on solubilityUse fume hoods!
35 Routes of Exposure Skin/Eyes Contact with skin or eyesUsually due to accidental spillsEffects largely based on tissue conditionDry vs. moistCuts & abrasionsLocation – thickness varies – worst in eyes, at groin, between fingers/toesLocal and systemic effects – depends on solubilityWear chemical splash safety goggles & gloves!
36 Route of Exposure – Ingestion Usually accidental - bad hygieneLocal or systemic effects – depends on solubilityNEVER 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 chemicalsDO NOT store chemicals in food containers or v/vWASH your hands frequently and always when you leave labAvoid spreading contamination – remove your PPE before you leave lab
37 Routes of Exposure – Injection Most dangerous, least likelyBroken glassware is biggest culpritSyringes, razor blades, etc.Biohazard vs. ChemicalSharps Containers!
38 Signs of Exposure External Internal Longer Term Toxic Response itching/rash/swellingchange in breathing/sneezing/coughingdiscoloration of skinmucousvomitingInternalpain/headachequeasytasteirritation to nose/throatdizzinessLonger Term Toxic Responseorgan function/sizecell/tissue alterationbiochemical changesbehavioral changes
39 Exposure PreventionKnow & understand the hazards of the chemicals and processes – if hazards unknown – assume the worstSubstitute less hazardous chemicals and techniquesScale down experimentsUse proper PPE & engineering controlsDO NOT work alone in the laboratory – at least make others aware of your presence!Use common sense!
40 Personal Protective Equipment (PPE) Eye ProtectionGlovesClothing
41 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 whenEntering a lab with no chemicals being used directlyInstrument rooms where no or minor amounts of contained chemicals are being usedWhere impact of large particles is the only issueDoing dishesFace shields – Use when extra face and neck protection is desiredFace shield is not adequate alone – also need goggles underneath!
42 Other Eye Protection Issues Prescription eyewear is not usually impact resistant, so it fails to meet ANSI Z-87 requirementsMust have tempered glass with side shieldsContact 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
43 Glove Types Disposables Chemical Resistant Cut Resistant Voltage ResistantGeneral PurposeTemperature Resistant
44 Use the Right Glove for the Job Glove material charts (chemsafe website)Latex – not meant for chemical resistanceVinyl – aqueous solutions, alcoholsNitrile – non-halogenated solventsNeopreneRubberKeep in mind – time of direct exposure
45 Safe Glove Practices Inspect gloves for pinholes Avoid immersion or prolonged direct exposure to hazardous chemicalsBe aware of what you are touching with you contaminated gloves – keep “lab pens”Discard or wash after useWash hands after useRemoval
46 Protective Clothing Full Coverage Clothing less exposed skin, less chemical exposureworst to have midsection & upper thigh exposedLab Coats & Aprons – choose the material to match the jobClosed Toe ShoesLeather uppersGlassware/physical hazards and chemical exposureJewelry - watches and rings can trap chemicals
47 Engineering Controls: Chemical Fume Hood Air flows through the face and out the vents in backFactors that affect airflow:Sash HeightDraftsBulky objects inside
48 Fume Hoods General Rules fpmWork ~6” inside openingSash heightAvoid turbulence (movement, doors/windows)Do not overload with chemicals/equipmentAlways use with volatile chemicalsNot to be used as eye protection!
49 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 LakesideUP – x2222 or on cell phoneAlso covers exposure treatmentAccident ReportOn chemsafe website
50 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?
51 Treatment for Dermal Exposure Rinse with tepid water for a minimum of 15 min.Small Area vs. LARGE AreaCall UP (x2222) – Provide MSDSIn 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 exposuresNEVER apply creams, lotions, or sprays.
52 Dermal Exposure Follow up If no further irritation arises - the area can be washed with soap and waterMild irritation can be left exposed to the air after rinsingIf the irritation gets worse or MSDS states that medical attention should be sought immediatelyPhysicianUP (x2222) to arrange for immediate transportation to Lakeside Hospital – provide MSDSReport all exposures to CHCFill out accident report
53 Treatment for Chemical Contact With Eyes Flood the eyeballs with water for minutesForce eyelids open using the thumb and forefingerRoll 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 attentionReport 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.~~
54 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 mouthIf 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 responderReport all exposures to CHC accident report
55 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 exposedSend MSDS with injured party for emergency respondersMouth-to-mouth resuscitation may result in contamination of responderReport all exposures to CHC accident report
56 Chemical Spill Kit Each lab must have its own general kit. Benchtop KitThe type of kit needed is a function of the type and volume of chemicals present in the lab.If specialty kits necessary – see CHCInclude gloves, goggles and a lab coat in or near your kit.5-gallon Bucket Kit
58 Pull the FIRE ALARM (only laboratory personnel) LEAVE the building Do you know the spilled chemical material’s identity?YesNoCall EMERGENCY CONTACTSin orderImmediate health or safety concern?(symptoms of exposure, fire or reactive hazard, etc.)YesNoGreater than 2.5 liters?NoISOLATEATTEND to INJURIESEVACUATE the roomCLOSE the doorPull the FIRE ALARM (only laboratory personnel)LEAVE the buildingCALL UP immediately (x2222 or )ARRANGE meeting place with UPREGROUPUse appropriate SPILL KITDispose materials as hazardous wasteIf chemicals considered non-hazardous, clean using an inert absorbent (kitty litter, paper towels, sponge, etc.) as appropriate.YesCall EMERGENCY CONTACTSin order
59 Emergency Evacuations EquipmentSet-upsWater/heating/cooling systemsClose fume hoodsNotify UP of situation
60 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 necessarypurchasing form to CHC prior to purchaseWill make sure there is not already an available sourceInventoryNeed for SOP, special training, PPE, or first aid/spill equipment
61 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 chemicalsChemical Name (please type out full chemical name )CAS # (available in catalog)ManufacturerCatalog #size of bottle# of bottlesDate orderedperson orderingBuilding/Room Chemical will be StoredMethod of Purchase (PO, Research, credit card)
62 special provisions required For CHC use onlyspecial provisions requiredbarcode printed
63 Chemical StorageNO chemicals higher than shoulder level or on the floorABC method – Incompatibles!Flammable CabinetsUnless immediately in use, store in designated cabinetsLimit flammables stored in any one cabinet & any one labCorrosive CabinetsUse for acids or bases, but not togetherNitric acid & organic acids (Acetic acid!) should be stored separate from one anotherRefrigeratorshousehold vs. flammable vs. explosion proofUse secondary containment to limit vapor build-upAuto-oxidizersInventory
64 Step 1: Determine what your wastes are Chemical Waste DisposalStep 1: Determine what your wastes areAny chemical that has been used andis no longer considered usefulAny chemical you want to throw awayAny reagents that are:- old- out-dated- left-over- otherwise useless
65 Chemical Waste Disposal Step 2: Make a Hazardous Waste DeterminationA chemical waste is a “hazardous waste” if it exhibits any of the following characteristics:IgnitabilityLiquid flash point < 140°F (60°C) (exception: <24% alcohol)Ignitable solids & gasesCorrosivity - pH is < 4.0 or > 10Elemental neutralization is allowed - recordkeepingReactivity – reacts with water, can form potentially toxic gases, is unstable or explosive.Toxicity –EPA’s D-list of “toxic” chemicals
66 Chemical Waste Disposal Step 2: Make a Hazardous Waste Determination Cont’dA chemical waste is a “hazardous waste” if it appears on one of the following RCRA lists:B-list – PCBs (NYSDEC Regulation)U-list – toxic chemicalsP-list – acutely toxic chemicalsF-list – spent solvent mixturesOR chemicals you just know are BAD
67 Chemical Waste Disposal Step 3: Satellite AccumulationContainerCompatible and in good conditionHas “tight-fitting” closureLabel (4 things):Words “hazardous waste”Name of chemical(s)Main Hazard(s): Toxic, Reactive, Ignitable, CorrosiveDate FULL/removedSecondary ContainmentMust segregate incompatiblesOne container per waste stream
68 Packaging Hazardous Waste - General LABELING - remove any old labels, small vials/bottlesCOMPATIBILITY!ALWAYS keep container tightly closed when not in use!The right size for the right jobKeep the bottle clean – wipes for P-listed chemicals now haz wasteAllow head space for vapor expansionStore only in safe & secure areasStore only at the “Point of Generation”If mixtures involved, record approximate % comp.Limits on amountsALL spills with hazardous chemicals are hazardous waste!
69 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:_____________
71 Mixed Haz Waste Manifest (pg. 1) Organic Liquid Hazardous Waste OnlySUNY College at BrockportRoom ________ Name of Person Responsible______________ Bottle Code_____Date GeneratedChemical CompositionVolumeSignatureDate Bottle Filled:______________________Total Volume:_________________Date Bottle Removed to Central Storage:_________________
72 Mixed Haz Waste Manifest (pg. 2) 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 poisonTotal Volume Chemical Hazardous characteristic(s)*Room Collected: __________ Name of Person Responsible______________________Date Bottle Filled:____________ Total Volume:_________________Date Bottle Removed to Central Storage:__________
73 Chemical Waste Disposal Step 4: Central StorageSecure Proper Label (white copy of EHS labels)Contact for removal from lab:CHM Beth Gregory or Individual PIBIO Dawn Newman or Dawn LeeENV Hilary Richardson or Dawn LeeESC, PHS Dawn LeeNO reactives in Central Storage – contact CHC if reactive chemicalAdd yellow Hazardous Waste stickerCopy of tag or 2nd pg. of manifest in drop box in bunker
74 Other General Haz Waste Issues No evaporation of solvents up the fume hoodMixture rule (including saturated paper, filtering aides, etc.)Generally NO treatment of wasteStudents can perform as part of procedureElemental neutralization – log sheets - reportingWaste oil – haz vs. non-hazOld chemicals – get rid of them!RCRA EmptyChemical removed by conventional means – no more than 3% by weight of total capacityP-listed waste – 3x rinse – dispose of all as haz waste
75 Reuse or Disposal of Empty Bottles In ALL casesInform CHC of the empty bottle, so it can be removed from inventoryIf reusingRinse clean with appropriate solvent if necessaryRemove mfg. label, and add a new, compliant labelCompatibility!If disposingAll glass (whole or broken) to be disposed of should be collected separately from paper wasteAll glass to be disposed of should be rinsed clean/delabeledCollect glass in a sturdy cardboard box labeled “Broken Glass”Seal the box well with packing tape and dispose
76 Universal Waste Categories Rules LampsBatteries (other than alkaline)Mercury containing devices (unbroken)PesticidesRulesClosed containersLabelingIF you have these, contact CHC for details on disposal
77 Lab Security Practical & legal issue Lock doors when no one is in the labLimit key distributionParticularly hazardous chemicals – 2° security
78 Physical Hazards in the Lab Gas CylindersCryogensElectricalTemperaturePressure WorkGlasswareRefrigeratorsCentrifugesTripping & falling objects
79 Gas Cylinders Gases are chemicals Chemical Hazards – flammable, corrosive, explosiveAsphyxiationVentilation & PPELabelingShut off cylinder valve – LeaksPhysical Hazards - Treat with respectHigh pressure can create a rocketNO homemade connectors to alter valves, fittings, or regulatorsTransport on a secured cart – do not roll or dragSecure gas cylinders when in storage or use
80 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 gasesExtreme cold (effect on flesh as well as materials that can become brittle)Transfer from one container to anotherMinimum of indirectly vented goggle – suggested face shield and full body coverage advisedTransfer slowlyCheck hosing and containers used for transfers regularly
81 Electricity in the Lab Do not use 2 prong plugs Remove any damaged cords and replaceNo bare wires EVER!Do not overload circuitsDo not use extension cords as permanent set-upDo not use any sparking electrical equipment around flammable vaporsSpecial stirring motors, heaters, refrigeratorsNever bypass electrical safety equipmentTry to keep electrical sources away from water
82 Phone Numbers/Websites Anytime you think you should call 911, callUniversity Police x2222Dawn Lee, CHC x5873Dave Turkow, EHS Director &CHO x2005Sarah Klein, EHS Assistant Director x2495
83 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)?
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