Upload
melinda-box
View
142
Download
3
Embed Size (px)
Citation preview
Chemistry Graduate Student Orientation Safety Training
Chemistry Department Safety Officer: Melinda Box, [email protected] (919) 515-2537
Safety Goals
Prevent acute injuries to yourself and othersPrevent cumulative exposure to yourself and
othersPrevent damage to materials and facilities
NOTE: This training is an INTRODUCTION. It is not all-inclusive, so if you’re ever
unsure, ASK!
2
Know the Space
NASA astronaut, Tim Kopra, using a Microgravity Glovebox aboard the International Space Station 3
Know the Space
safety shower eye wash first aid kit fire
extinguisher fire alarm pull spill kit
4
Know the Space
evacuation route(s)(either posted or in binder of safety plan)
telephone (as back-up) contact numbers for incident,
accident, or assistance: 911 or (919) 515-3000
street address and room number (not just building name)
5
Know the Space ventilation hoods
(types and how to operate)
chemicals present (note that in teaching labs these may change regularly)
waste collection arrangements (type, location)
6
Lab Safety Info Door Sign info
contact person hazards inside lab
Safety Plan – in binder in lab
Lab Safety Officer
SAFETY PLAN
7
Know the Chemical Hazards
Globally Harmonized System (GHS) of Labeling – a first indication of type of hazard posed
further information from SDS is usually needed
GHS Health Hazard Category Limits
GHS Physical Hazard Category Limits
8
Know the Chemical Hazards
SDS’s and the GHS – Example of Sigma Aldrich format
for Lithium Aluminum Hydride GHS Hazard Sta
tements
GHS Precautionary Statements
9
Know the Chemical Hazards
MSDS formats – no two distributors are alikeExample from ScienceLab.com
10
Know the Chemical Hazards
Common Hazards Irritant – avoid skin contact and breathing Sensitizer – avoid repeated contact
Carcinogen – eliminate or minimize exposure
11
Know the Chemical Hazards
Common Hazards
Toxin – OR OR
avoid internal exposure
NOTE: internal exposure can be caused by touching contaminated gloves, hands, or cell phones to the face
12
Know the Chemical Hazards
Toxic Substance Working Limits
13
Know the Chemical HazardsCommon Hazards Corrosive – respond rapidly to eye or skin
contact;also store in a cabinet designed for that purpose (lower conc’s of ≤ 1 L may be kept at the bench)
Oxidizer – keep away from flammable andcombustible materials, including organic reagents, clothing, and wooden shelves and cabinets
14
Know the Chemical Hazards
Common Hazards Flammable – keep away from heat
and flames and store volumes ≥ 1L in a cabinet designated for that purpose
Uncommon Hazards Pyrophoric (ignites spontaneously
in air at temps 130 oF or 54.5 oC)– get training from senior group members or PI
15
Know the Chemical Hazards
Uncommon Hazards Explosive – use a blast shield or hood sash
Teratogen (causes harm to developing fetus) – avoid handling while pregnant or while near someone who is pregnant
Mutagen (causes genetic mutation) - eliminate or minimize exposure (may be associated with carcinogenicity)
Lachrymator (causes eyes to water) – always handle in a fume hood
16
Know the Chemical Hazards EH&S email –
gives safety info & goes to purchaserex’s – peroxide formers, air/water reactives, highly toxics
Experience of lab mates
Lab manual and SOPs
JUST ASK!
17
PPE Requirements and Support
Always wear safe attire in lab:
safety glasses or goggles long pants (to the
ankles) closed toed shoes covered torso and
shoulders gloves as needed lab coat as needed
Resources: Glove Selection:
Ansell Chemical Resistance Guide
North Chemical Resistance Guide
FREE Prescription Safety Glassesat NCSU
Getting a Lab Coat – contact Alan Harvell 18
Ventilation Hood Use Use the hoods properly:
keep sash height below marked limit close sash when not in use turn off bench top hoods when not in use keep work ≥ 6 inches inside the hood
Always work in a hood when handling: volatiles (i.e. easily form vapor, low b.p.) dust irritants toxic solids that may generate dust
(including weighing) explosion risks
19
Know the Physical Hazards
20
Know the Physical Hazards
Compressed Gases cap in transport or while not in use chain tanks to a cart or brace
only open caps and valves with an approved tool
don’t force connections
don’t use lube or tape on threads21
Know the Physical Hazards
U/V rays – cumulative eye and skin damage
don’t look directly into the lamp
use a UV filtering window or safety glasses to look under lamp
Silica Gel – breathing hazard irritation not scarring transfer in a hoodOR with a dust mask and eye
protection outside a hood22
Know the Physical Hazards
Cryogens – dry ice and liquid nitrogen wear cyrogenic gloves when touching
anything cooled by the cryogen wear eye and face protection when
handling cryogen avoid breathing exhaust from a relief valve never fill a dewar more than 80% move away from a spill keep flammables away from liquid nitrogen
cold traps that may condense oxygen
Additional Training in NCSU EHSCryogen Safety Video
23
Know the Physical Hazards
Burn prevent - alert lab mates to hot glassware treat - run cold water or place on ice
for 15 minutes
Fire stop, drop, and roll
and/or use the safety shower on objects, may use
fire extinguisher (optional) on pyrophoric fires, fire sand is more
effective and easier to clean up 24
Know the Physical Hazards
Crush/Pinch Point ask for assistance use proper means of moving, lifting, or transport
Electrocution be vigilant around modified electronics do not override interlocks
Loud noises white noise or sudden - wear hearing protection get pre-screened before exposure
to high decibel background on-line Hearing Conservation Training
25
Follow Ergonomics for Computer Use
26
Taking Responsibility
27
Safety Training Needed
For all NCSU employees: Manager’s Safety Checklist
(including research group’s SOP’s)
For anyone who might handle chemicals:
Chemical Hygiene Plan Hazardous Waste Manageme
nt
To Whom It May Apply: BioSafety Formaldehyde Hearing Conservation Trainin
g Laser Safety Radioactive Material Safety Respiratory Training X-ray Safety Nanomaterials 28
Biohazard and Laser Safety Basics
Do not enter these designated spaces
without official training!
BioSafety Golden Rules: 1)Anything that may have touched a contaminated surface should be
disposed in biowaste. 2)Use dedicated lab coat, pens, calculators, etc to keep bio-
contamination from leaving lab.
Laser Safety Golden Rules: 3)Wear laser safety glasses when the laser may be on. 4)Don’t wear anything reflective or shiny, particularly loose jewelry. 29
Know Chemical Labeling and Transport Requirements
Use secondary containment (ex’s: bucket, bin, or cart with lip)
Labeling – storage bottles - full name of all
components and approx. comp. rxn in progress - nature of contents
(ex’s: aqueous, organic, etc) vials - date and lab notebook page
Ethanol
NOTE: restraining rail
30
Know Waste Mgmt Practices keep waste in secondary containment keep waste capped when not in use for lidded/latching funnels –
fully latch when not in use make sure lid is open before pouring in
segregation, common examples: keep acids from bases, organics, and
metals highly toxics from all else questions?
Contact Bruce Stewart (919) 515-6307) Sodium Cyanide
1%Water 99%
Nitric Acid 10%Water 90%
31
Know Waste Mgmt Practices
labels must list full names of all substances disposed in container (e.g. not “acid waste” or “halogenated waste”)
waste may not be removed from location of generation, except by authorized personnel
waste must be removed within 90 days (so it’s recommended to use a smaller container than anticipated need)
segregate Biowaste and treat properly (i.e. must be autoclaved as directed – check with senior group members for details)
in teaching labs, only down the drain or in the regular trash when directed
32
Know Response for Eye Wash and Safety Shower Use
Assist affected person to shower or eye wash and make sure user rinses for 15 minutes
send someone to get assistance while you stay with the affected person and call 911 for emergency assistance
stop all work in the room & make sure students shut down experiments safely
prepare for flooding of the room
make sure user of safety shower disrobes
33
Know How to Respond to an Accident or Incident
For fire evacuation, medical, or spill, call 911 from a campus or personal phone
Provide building address and emergency situationto campus dispatchers
Remain on location until responders arrive Stay with the affected student; send someone else to get
assistance For a spill, evacuate the room and close the door if the
substance may pose a breathing hazard. Then call 911. EH&S has someone on call to deal with spill clean-up.
Fill out a report form –one of the following: teaching labs’, department’s, university’s on-the-job injury
34
Follow Best Practices
35
Follow Best Practices Never work alone in lab No lab items in office spaces No lab coats or gloves in the
bathroom or other non-lab space
Never Eat or Drink in Lab Use good ergonomics for heavy
lifting 36
Follow Best Practices in Lab
Always make a plan, preferably written, before starting an experiment.
Considerations in making an experimental plan: chemical, physical, and health hazards work flow waste management other resources and equipment
37
Follow Best Practices in Lab
Allow extra time to do things(rushing tends to undo progress)
Maintain good housekeeping (for improved experimental success and for consideration of lab mates)
keep bench organized and uncluttered return materials to shared storage keep work space open and not crowded by
storage38
Never’s and Always’s Always mark peroxide formers, such as
diethyl ether and THF, with the date of receipt and the date of opening. Then follow these time restrictions for disposal:
After Receiving After Opening
Class A – Peroxide Hazard on Storageex‘s: Isopropyl Ether, Potassium metal,
Sodium Amide3 months 3 months
Class B – Peroxide Hazard on Concentration
ex‘s: THF, isopropanol, diethyl ether, benzyl alcohol, acetaldehyde
12 months 6 months
Class C – Peroxide Initiation of Polymerization
ex‘s: butadiene, vinyl chloride, methyl methacrylate, styrene
12 months or 24 hours w/o
inhibitor 39
Never’s and Always’
Never use perchloric acid in an unapproved hood (i.e. one specially designed to prevent explosive crystal collection in the ducts and hoods)
Always request EH&S assistance in cleaning up a mercury spill (to insure thorough and safe removal)
Never use a hood that is not working properly (i.e. alarming, no flow, low flow, or excess flow) 40
Campus Safety and Security
For emergency - call 911 from any phone For assistance – call campus police at
(919)515-3000 For info about campus safety alerts,
automatic and requested, including natural disasters - https://www.ncsu.edu/emergency-information/
41
Helpful Resources
EH&S Website https://ehs.ncsu.edu/ Chemistry Dept Safety Info
https://www.ncsu.edu/chemistry/about/safety.html
Hazardous Waste Management – Bruce Stewart (919) 515-6307
Radiation Safety – Amy Orders (919) 515-5208 BioSafety – Darren Treml (919) 515-6858 Laser Safety – Simon Lappi (919) 515-6871
42
Case Study Discussions
Get into groups of 6 members each, as much as possible, by discipline: Organic (2 groups) – Peroxide Formers Biochem (2 groups) – Hazardous Waste Segregation Analytical/Physical (2 groups) – Laser/Electrical Safety Theoretical /Other/Undecided (2 groups) – Student
Fainting
Each group discusses these questions:What could have been done differently
to prevent the accident?What repurcussions do you expect
from the accident?43
Contributors
Lab Safety Officers - Rosalynd Joyce, Madison Davidson, Leiah Carey, Cameron Stevens, Brandon Zoellner, Maans Ekeloef, Amanda Cooper, Christina Martinez, Xiaohu Xie, Alec Falzone, Sara Martin, David Daley
Undergraduate Lab Supervisor – Marcie Belisle
Undergraduate Lab Manager – Maria Gallardo-Williams
44