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Laboratory Safety Safety Training for Research Laboratories at Stanford University

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Presentation on theme: "Laboratory Safety Safety Training for Research Laboratories at Stanford University"— Presentation transcript:

1 Laboratory Safety Safety Training for Research Laboratories at Stanford University

2 Topics Well Cover: Chemical hazard awareness Control of chemical exposures Chemical storage/transportation/shipping Chemical waste management Emergency response


4 PLAN: Gather Information Sources –Labels –MSDS –Reference books –Chemical safety database –Toxic gas table –EH&S –Exposure limits listed in: *Cal/OSHA Regulations *ACGIH TLV and BEI booklet

5 PLAN: Gather Information Cal/OSHAs Lab Standard (8 CCR 5191 – Occupational Exposure to Hazardous Chemicals in Laboratories) – –Appendix A of regulation provides basic rules and procedures for working with chemicals SUs Chemical Hygiene Plan – –Each laboratory responsible for developing Lab Safety Plan

6 PLAN: Gather Information MSDS –http://stanford.chemquik.com –quality varies –presumes industrial use –helpful info included: Visual appearance or odor of hazardous chemical when being released signs/ symptoms of chemical exposure permissible exposure limits (if established)

7 PLAN: Gather Information

8 Chemical Safety Database –Stanford system –Basic safety info –Storage code designations –Access through on-line inventory or EH&S web page (

9 PLAN: Gather Information

10 PLAN: Know The Chemical Hazards Physical Hazards: –Flammability, corrosivity or reactivity Health Hazards: –Acute Health Hazards High concentration (ceiling limit), short exposure duration Damage happens quickly –Chronic Health Hazards Low concentration, long exposure duration Long latency (symptoms may appear long after exposure)

11 PLAN: Know Routes of Exposure Inhalation Absorption (skin or eye contact) Ingestion Injection (cuts, puncture)

12 PLAN: Assessing Hazard Level Depends on: –Chemical: toxicity, concentration –Use: duration, frequency, amount Evaluation may include: –Baseline survey or audit –Observation of work practices, personal protective equipment (PPE), engineering controls –Air monitoring

13 The Dose Makes The Poison Men Hospitalized for Eating Chili 1999 Darwin Awardee, Honorable Mention (May 1999, Philippines) Three men attempting to land in the Guinness Book of World Records were hospitalized in Legaspi after eating huge amounts of chili peppers. They were treated for acute gastritis and high blood pressure, and released.

14 PLAN: Controlling Hazards 1) Substitute to less toxic material or less hazardous procedure (microscaling expt.) 2) Use of engineering controls –Ventilation, isolation 3) Use of administrative controls –Ensuring safe work practices, rotating staff 4) Use of personal protective equipment –Gloves, safety glasses/goggles

15 PLAN : Waste Reduction Purchase only what you plan to use Check inventory prior to any purchase Inventories only remain as accurate as your lab keeps it!

16 PLAN: Updating Inventory SCIMSweb at: Update SCIMSweb inventory to: Add chemicals new to the lab Delete old chemicals no longer used Report increases or decreases in average volumes kept Contact EH&S at 3-9667 to gain inventory access

17 . Reproductive Health Protection Program University promotes early recognition of potential reproductive hazards. Reproductive Hazards: –Chemical, biological, radiological or physical agents that can damage reproductive systems of males and females. –Can result in infertility, spontaneous abortion, developmental impairment or death of fetus or child. EH&S services include: –Evaluates work areas. –Recommend proper procedures to reduce workplace exposures –Tier II training. Contact the IH/Safety Program at 3-0448 for assistance.


19 USE: Labeling Label every container Change the label when you change the contents Label water! Spell out the common chemical name Add date to label when received

20 USE: Exposure Control Inhalation: Lab hoods Designed to : (1) Exhaust contaminant out of breathing zone of worker (2) Provide some splash protection (3) Not designed to contain or withstand explosions. Never put your head inside the hood! Close chemical containers

21 USE: Exposure Control Inhalation: Lab hoods For proper performance: –Ensure certification is current –Lower sash to required height –Do not place anything within 6 of the front and back –Elevate large equipment off surface –Minimize storage in the hood –Do not disable flow alarm

22 Energy Conservation A substantial amount of energy is used to heat and cool air that goes out fume hoods. A 6-foot fume hood can cost Stanford as much as $6,200 per year to operate. Please keep hood sashes closed and lights off when not in use.* * Applies to Moore (aka McCullough Annex), McCullough, and Green Earth Sciences.

23 USE: Exposure Control Remember: Lab hoods are NOT designed to contain or withstand explosions.

24 USE: Exposure Control Inhalation: Respirators Generally not required in labs May be needed if: –cant work in fume hood –need protection in addition to fume hood Call EH&S if you think you need one –requires medical evaluation, training and fit testing

25 USE: Exposure Control Absorption: Gloves Disposable / reusable –disposable: drip/drop and low toxicity –reusable: high exposure and/or higher toxicity Glove material choice balances many factors: –protection –side effects (possible latex allergies?) –ease of use (durability / tactility / grip) –cost Double glove may be necessary Check EH&S website for glove selection:

26 USE: Exposure Control Absorption: Glove use Inspect gloves before wearing Remove immediately if splashed or contaminated and WASH HANDS! Dispose of contaminated gloves as hazardous waste Remove gloves before you leave the lab Use designated pens when wearing gloves

27 USE: Exposure Control Absorption: Eye/ Face Protection Labs are eye hazardous areas Safety glasses, goggles Face shields How about –Prescription glasses? –Contact lenses?

28 USE: Exposure Control Absorption: Protective Clothing Also have to protect skin on other body parts Researchers have been injured:

29 USE: Exposure Control Nitric Acid:

30 USE: Prevent Absorption Phenol

31 USE: Prevent Absorption Sodium Hydroxide

32 USE: Exposure Control Proper Lab Attire Lab coat Closed toe shoes Pants are much safer than shorts and skirts Dont wear loose clothing Dont wear tight clothing

33 USE: Exposure Control Ingestion: No mouth pipetting !!! No eating, drinking or applying cosmetics in chemical use areas Wash hands before leaving the lab No food or drink storage in labs

34 USE: Exposure Control Injection: Dont directly handle broken glassware, needles and other sharp objects

35 USE: Ergonomics Repetitive activities –microscope –computer use –pipetting Manual handling –heavy lifting –pushing carts –shelving items For training or post-injury work-site evaluation, call EH&S


37 CHEMICAL STORAGE Provide Lab Security Keep the public from your chemicals Systems already in place: –Lock your lab when unattended –Do not prop open building doors –Respect the card key system

38 CHEMICAL STORAGE Select locations away from exits Shelves –provide earthquake protection –use overhead storage judiciously –dont store within 18 of ceiling Sinks –do not store chemicals over a sink –do not store chemicals in a sink

39 CHEMICAL STORAGE Secondary containment –check volume of containment –keep them clean Segregation –separate by storage group letter codes

40 CHEMICAL STORAGE Flammables Flammables storage cabinet –required for > 10 gallons of flammable & combustible liquids –inspect for rust –acetic acid

41 CHEMICAL STORAGE Flammables Refrigerators –explosion proof –flammables –regular 1 gal of isopentane did this

42 CHEMICAL STORAGE Compressed Gases Store upright Restrain –metal –two-restraints –no gang chaining Place in safe location Segregate incompatibles

43 CHEMICAL STORAGE Protect the valve Disconnect regulator Use valve cover NO BENCH CLAMPS Mark once emptied Get compressed gas safety training !!

44 STORAGE : Exercise Secondary containment and lips on shelves in use Heavy items stored on low shelf

45 STORAGE : Exercise Box overhead - heavy? Blocked eyewash and shower Food in lab Jar of juice on benchtop

46 TRANSPORTING CHEMICALS Preventing Spills Transportation within or between buildings –use carts with secondary containment segregate by storage group –safety carriers Container selection –good condition –compatible

47 SHIPPING SAMPLES/CHEMICALS All shippers (Fedex, UPS) will require you to state if a Dangerous Good Determine if hazardous material –Toxic, biohazard, corrosive, flammable –Dry Ice. Compressed gasses (even air) Proper packaging and labeling –Use only specifically designed packages Shipping papers signed by certified person

48 SHIPPING SAMPLES/CHEMICALS Overseas shipments require Customs Broker contract –Stanford Contract; American Overseas –Research exclusion from export controls PI must file documentation with Dean of Research For additional assistance, contact –EH&S at 723-5069 or, –Dean of Research at 723-9721


50 DISPOSE: Identify Wastes Point your browser to: What is hazardous waste? First, it has to be a waste –Your decision –Surplus Chemicals not wastes Surplus Chemicals –In original non-leaking container –Legible manufacturers label –See Obtain chemicals or donate

51 DISPOSE: Identify Wastes All chemical waste is hazardous, except: –chemicals listed on Many buffers are hazardous due to organics –empty containers, 5 gallons or smaller, did not contain acutely hazardous material (E.g.: acrolein; see website) Mixed waste –biohazardous + chemical chemical waste Deactivate any biological organisms –radioactive + chemical call EH&S first Short half-life preferred (32P) Treat the chemical portion

52 DISPOSE: Label Use one label per container –Instructions on back Accumulation Start Date Chemical Composition Hazard Identification Name/Location Call 5-7520 to get labels

53 DISPOSE: Accumulate Time and Volume Limits in Labs –8 MONTHS!!! acutely –55 gallons total/1 quart of acutely hazardous waste Satellite Accumulation Area: In the Lab –Waste from your lab only –Proper segregation, secondary containment Laboratory Satellite Accumulation Area –Waste from several labs (lab waste only) As close a practical to generation site All people who have access must be trained Notify EH&S if you want to set up.

54 DISPOSE: Universal Wastes Fluorescent Tubes Batteries – Electronic Equipment –Not waste unless monitor is physically broken. If broken, needs hazwaste label. –Follow Sensitive Property procedures

55 DISPOSE: Pickup Procedures Standard pickup: –when a container is full or is 8 months old – Blanket pickup: –for repetitive wastes, at least 5 gallons/month –submit blanket pickup request one form per waste

56 DISPOSE: Prohibitions Illegal Disposal –dont put in a drain or trash –dont intentionally evaporate Transportation –EH&S will pick the waste up Treatment without EH&S approval

57 DISPOSE: Benchtop Treatment Call EH&S for additional training Volume and time limitations Peer-reviewed treatment method Especially useful for mixed wastes Non-sewerable but non-hazardous wastes –No additional requirements –Example: pH>2.0 but < 5.5


59 RESPOND: Life Safety Boxes Life Safety Box Contents Item: Updated by: room map lab emergency contacts lab front cover EH&S inventory printout EH&S

60 RESPOND: Chemical Spill/Exposures Safety Shower/ Eyewash Use Yell for help Stays on once activated Flush for 15 minutes Remove clothing Keep injured eye lower Keep area accessible Water accumulates Water not tempered!

61 RESPOND: Chemical Spill/Exposures Medical Response - depending on severity ÕEmployees go to Stanford Hospital ER or Sequoia Occupational Health (454 Forest Avenue, Palo Alto) ÕStudents go to Stanford Hospital ER or Vaden Student Health. ÕTake MSDS with you! Reporting: Complete SU-17 and DWC-1 and SU-16, as appropriate – with assistance from supervisors.

62 RESPOND: Chemical Spill If health threatening: –cal1 9-911 –alert others –evacuate –remain nearby to provide information If not health threatening –Clean it up yourself –Call 725-9999 (EH&S; 24/7)

63 RESPOND: Chemical Spill When to call EH&S (725-9999) DO call if: –spill is not contained in a hood or a lab bench and might either enter a sink, floor drain, contact soil, or produce hazardous vapor emissions, OR –Spill is > 50 ml –you cant complete cleanup within 8 hours DONT need to call if: –spill is < 50 ml, AND –you are knowledgeable of the hazards, AND –you can clean it up with what you have at-hand

64 RESPOND : Spill Cleanup Spill cleanup kits –Absorbent kits (from EH&S) Solvents, dilute acids/bases, other liquids –Acid / base neutralizer kits (stores, supplier) –Mercury spill kits (stores, supplier) All contaminated spill cleanup materials must be managed as hazardous waste

65 RESPOND : Fire Extinguisher Know location Keep accessible Get training

66 EH&S Training Resources This is Tier II training. Get operation-specific training (Tier III Training) from your PI or supervisor. Information and training required upon initial assignment to work area where hazardous chemicals are used and prior to assignments involving new exposure situations.

67 EH&S Training Resources Training courses available include (but not limited to) : – –Ergonomics (laboratory, computer, safe lifting) –Fire Extinguisher –Bloodborne Pathogens –Laser Safety –Compressed Gas –Electrical Safety –Waste Accumulation Area, Benchtop treatment Contact EH&S at 5-1470 to schedule trainings

68 EH&S Resources SU Environmental Health & Safety 723-0448 – –

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