Laboratory Safety
Lecture 1
Chemical & Fuels Engineering
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OHSA Hazard Communication
Standard from 1988.

Employer
responsibility





Provide Information
Chemical Hygiene Plan
Permissible Exposure
Limits established
Symptoms associated
with exposure
Reference materials on
hazards, safe handling,
storage and disposal

Training



Physical and health
hazards of chemicals
used
Contents of Chemical
Hygiene Plan
Methods to detect of
hazardous chemical
release
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Employee Responsibilities
(this is you, the student)


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Plan work in accordance
 Personal responsibilities
with Chemical Hygiene Plan
Use equipment for designed
 Work so that others (e.g.,
purpose
coworkers, the public) will
Be familiar with emergency
not be harmed.
equipment and procedures
Know and use appropriate
protective equipment
Be alert to unsafe
conditions and actions


call attention to them
correct them
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Chemical Hygiene Plan -
www.ehs.utah.edu/programs/chp.htm
Training and Documentation
 Standard Operating Procedures
i. Reactive Chemicals
ii. Corrosive Chemicals
iii. Acids and Bases
iv. Carcinogens and Toxins
v. Compressed Gasses
 Exposure Control Monitoring

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Chemical Hygiene Plan – Sections
Roles &
Responsibilities
 Information and
Training
 Prior Approval
Circumstances
 Standard Operating
Procedures


Appendix



Power Outage
Emergency Response
Carcinogenic
Chemical List
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
Lab is scheduled from 1:00 to 5:00 PM on assigned
afternoons.
You are expected to manage your time and productivity to make the
best use of your allotted time. Your employer will have the same
expectation. Make-up time will usually not be granted.
Students may not work in the lab unless an instructor, teaching
assistant, or lab technician is present.
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We start the semester with the lab clean and well organized. It is up
to you to keep it that way.
Clean-up is everyday at 4:30 PM, plan on this in your project
schedule.

Failure to clean-up everyday and at the end of your project will result in
a reduction in your grade and the ire of Bob Cox.
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You are responsible for the safety of your project, your team and
your neighbors. A safety review will be part of your preliminary
oral exam. Violations of safe practice will result in a reduction of
your grade or suspension from the lab.
As an engineer you are responsible for your own safety, the safety
of your co-workers, and the safety of the public and the
environment.

Safety equipment is available in each lab. There is no
excuse for not using it.
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



Safety glasses are required whenever you are handling chemicals or
operating machinery. (PERIOD)
Hard-hats are required when working on the grating area. Please do
not drop tools on the students below!
Use the fume hoods to reduce your chemical exposure.
When handling strong corrosives such as full strength acids and bases,
use a face shield, gloves, and splash apron.
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Gloves

Choose the type of Glove that will
protect against the chemical you are
handling

Glove Materials Permeation Test Data
Take glove off so that your skin does
not make contact with contaminated
area
 See www.labsafety.com

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Glove Material
Butyl
Neoprene
Nitrile
PVC
polyvinyl chloride
PVA
polyvinyl alcohol
Viton7
Applications
A synthetic rubber material that offers
the highest permeation resistance to gas
and water vapors. Especially suited for
use with esters and ketones.
A synthetic rubber material that
provides excellent tensile strength and
heat resistance. Neoprene is compatible
with some acids and caustics. It has
moderate abrasion resistance.
A synthetic rubber material that offers
chemical and abrasion resistance - a very
good general duty glove. Nitrile also
provides protection from oils, greases,
petroleum products, and some acids and
caustics.
A synthetic thermoplastic polymer that
provides excellent resistance to most
acids, fats and petroleum hydrocarbons.
Good abrasion resistance.
A water-soluble synthetic material that
is highly impermeable to gases.
Excellent chemical resistance to
aromatic and chlorinated solvents. This
glove cannot be used in water or waterbased solutions.
A fluoroelastomer material that provides
exceptional chemical resistance to
chlorinated and aromatic solvents.
Viton7 is very flexible, but has minimal
resistance to cuts and abrasions.
~ Cost
$12-20/pair
$30-55/12pr
$11-12/100pr
disposable
(Chemistry)
$16-60/12pr
reusable
$15/100 pr
disposable
$30-55/12 pr
reusable
$37/10pr
$35-100/pair
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
Do not eat or drink in the lab. These are chemical handling areas.

Do not pipette by mouth!



Do not spill any chemicals. Spill containment and clean-up materials
are located in lab 3520A.
The removable gratings between floors must not be removed. Near
fatal injuries have occurred in the past.
Shorts and sandals are not appropriate attire in the laboratories. You
can change before lab.
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



Keep your work area clean and well organized, clean up any
spills.
ALL chemical containers must be labeled.
After Consulting Guidelines for Drain Disposal of Chemicals,
Contact your instructor or Bob Cox for disposal of chemicals
and hazardous waste.
Be aware of the danger of long hair, loose clothing and jewelry
around rotating or moving equipment. Secure your long hair.
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Safety Considerations
Exposure Limits
 OSHA


Average over 40 hr
work week
– Sickness
– Death

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Flamibility/Explosion

Flamibility Limits

Explosion Limits
Threshold Limit
Value
Threshold of smell
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Hazardous Operations
Develop a plan of operation for
hazardous experiments/equipment
 Get plan approved
 Document all operations to meet the
guidelines of the plan

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OTHER LABORATORY AREA HAZARDS

Compressed gas cylinders.
A. Past accidents, projectile Hazard capable of
penetrating concrete walls.
B. Tanks must be securely belted or chained in
place.
C. Oxygen tanks must be segregated.
D. Oxygen connections and lines must be oil free.
E. Either a regulator or a safety cap must be in
place at all times.
F. The safety cap must be in place when moving
the tank.
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
OHSA

Chemical Hygiene Plan (CHP)


for Senior Lab
For University

MSDS

Container Labeling
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MSDS 
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Cornerstone of Chemical Safety
Identification
Ingredients and
Hazards
Reactivity Data
Spill/Leak
Procedures
Special Protection
Info.
Special Precautions

Glossary of Terms
used in MSDS
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
http://www.che.utah.edu
go to the SAFETY page

http://www.chem.utah.edu
contents frame
go to the MSDS link on the

http://www.ehs.utah.edu
go to the LINKS page
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MSDS
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Rating Summary
Health (Blue)
4
3
2
1
Danger
Warnin
g
Warnin
g
Caution
0
May be fatal on short exposure. Specialized protective equipment
required
NFPA
Chemical Hazard Labels
Corrosive or toxic. Avoid skin contact or inhalation
May be harmful if inhaled or absorbed
May be irritating
No unusual hazard
Flammability (Red)
4
Danger
Flammable gas or extremely flammable liquid
3
Warning
Flammable liquid flash point below 100° F
2
Caution
Combustible liquid flash point of 100° to 200° F
1
Combustible if heated
0
Not combustible
Reactivity (Yellow)
4
Danger
Explosive material at room temperature
3
Danger
May be explosive if shocked, heated under confinement or mixed
with water
2
Warning
Unstable or may react violently if mixed with water
1
Caution
May react if heated or mixed with water but not violently
0
Stable
Not reactive when mixed with water
Special Notice Key (White)
W
Water Reactive
Oxy
Oxidizing Agent
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Chemical Labels

B
C
E
F+
F
Xn
Xi
N
O
R
T
T+

Biohazard
Corrosive
Explosive
Extremely Flammable
Highly Flammable
Harmful
Irritant
Dangerous for the En
Oxidizing
Radioactive
Toxic
Very Toxic
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
Each lab/work area must have appropriate spill containment and clean-up
materials sufficient for the chemicals in use.

Minor spills dealt with in the Lab.

Two types of packs

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Acid
Base

Major spills require assistance, call University dispatch 5-2677
COPS).
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Life threatening situations, ring fire alarm and evacuate.
(5-
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What to do in Power Outage
Close Fume Hoods
 Secure Chemical Containers

Caps, Covers, etc.
 Close cylinders at tank valve

Turn off non-essential equipment and
large power draw equipment
 Check all sensitive or reactive materials
maintain cover gases or seals

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What to do in Fire
Pull the nearest fire alarm and evacuate.
 University policy is that students should not
attempt to fight fires.

Any person having first hand knowledge of an
alarm situation should report to the
emergency response personnel in the
parkinc7 lot at the northwest comer of MEB.
 Close lab and hallway doors on your way out.
 Never disregard a fire alarm.
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 Have an alternate escape route planned.

What to do in Earthquake.
Routinely close cabinet doors.
 Hide under a heavy desk or door frame.
 Evacuate cautiously, watch for falling
glass.
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Emergency Response
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
Many lab projects will generate hazardous waste streams. As
part of your project planning, discuss the disposal issues with
Instructor.

Some hazardous wastes may be treated and neutralized.

Guidelines for Drain Disposal of Chemicals

http://www.che.utah.edu/~geoff/writing/index.html

Some hazardous wastes must be collected for disposal.

All waste containers must be kept closed.

Annual EPA inspections. Fines from past infractions.
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