Chapter 1 – Introduction
_____________________________________________________________________________________________
1.
Purpose
This Laboratory Safety Plan (LSP)
describes policies, procedures, equipment, personal protective
equipment and
work practices that are capable of protecting employees from the health
hazards
in laboratories. This Plan is intended to meet the requirements of both
the
federal Laboratory Safety Standard, formally known as "Occupational
Exposure to Hazardous Chemicals in Laboratories", a copy of which is
found
in Appendix A, and the Minnesota Employee Right To Know Act (MERTKA).
This LSP is intended to safely limit
laboratory workers' exposure to OSHA- and MERTKA-regulated substances.
Laboratory workers must not be exposed to substances in excess of the
permissible exposure limits (PEL) specified in OSHA rule 29 CFR 1910,
Subpart
Z, Toxic and Hazardous Substances. PELs for regulated substances are
provided
in Appendix B. PELs refer to airborne concentrations of substances and
are averaged
over an eight-hour day. A few substances (listed under Individual
Chemical
Standard in the Federal column in Appendix C) also have "action
levels". Action levels are air concentrations below the PEL which
nevertheless require that certain actions such as medical surveillance
and
workplace monitoring take place.
MERTKA requires employers to evaluate
their workplaces for the presence of hazardous substances, harmful
physical
agents, and infectious agents and to provide training to employees
concerning
those substances or agents to which employees may be exposed. Written
information on agents must be readily accessible to employees or their
representatives. Employees have a conditional right to refuse to work
if
assigned to work in an unsafe or unhealthful manner with a hazardous
substance,
harmful physical agent or infectious agent. Labeling requirements for
containers of hazardous substances and equipment or work areas that
generate
harmful physical agents are also included in MERTKA.
An employee's workplace exposure to any
regulated substance must be monitored if there is reason to believe
that the
exposure will exceed an action level or a PEL. If exposures to any
regulated
substance routinely exceed an action level or permissible exposure
level there
must also be employee medical exposure surveillance.
2.
Scope and Application
The laboratories at the Center for
Magnetic Resonance Research are covered by this Laboratory Safety Plan. The Laboratory Safety Standard applies where
'laboratory use' of hazardous chemicals occurs. Laboratory use of
hazardous
chemicals means handling or use of such chemicals in which all of the
following
conditions are met:
i.
the
handling or use of chemicals occurs on a 'laboratory
scale', that is, the work involves containers which can easily and
safely be
manipulated by one person,
ii.
multiple
chemical procedures or chemical substances are
used, and
iii.
protective
laboratory practices and equipment are available
and in common use to minimize the potential for employee exposures to
hazardous
chemicals.
At a minimum, this definition covers
employees (including student employees, technicians, supervisors, lead
researchers and physicians) who use chemicals in teaching, research and
clinical laboratories at the
laboratory students, while not legally
covered under this standard, will be given training commensurate with
the level
of hazard associated with their laboratory work.
This
standard does not apply to laboratories whose function is to produce
commercial
quantities of material. Also, where the use of hazardous chemicals
provides no
potential for employee exposure, such as in procedures using chemically
impregnated test media and commercially prepared test kits, this
standard will
not apply. The CMRR researchers listed in the following table are
covered by
this Laboratory Safety Plan.
Principal Investigator Bldg Room
# Primary Area of Research Primary Research
Hazard
Wei
Chen
CMRR 132A
imaging
oxidative metabolism
High magnetic
fields
Sched
2, 3N
Michael
Garwood CMRR 109
animal
model to study response High
magnetic
fields
to
taxotere
Sched 2, 5
Rolf
Gruetter
CMRR 132A biomed on brain metabolism High magnetic
fields
&
neurochemistry
Sched
2
Geoffrey
Ghose
CMRR 149
learning
& cognition in visual
High
magnetic fields; Zoonotic
cortex
diseases (e.g. Herpes B)
Sched
2, 3
Dae-Shik Kim
CMRR 118
animal
model-visualization,
High magnetic
fields
function
& connectivity of brain Sched
2, 3,
3N, 5
Kamil
Ugurbil
CMRR 116 animal model for
oxidative
High magnetic fields
metabolism
in heart myocardium Sched 2, 3N, 4
J
Thomas Vaughan CMRR 147
animal model for human
High magnetic fields
safety
Sched 2,
3N, 4
3.
Coordination with Other Standards and Guidelines
The Laboratory Safety Standard and
MERTKA address occupational safety issues. Other federal, state and
local
standards that address use of hazardous chemicals and other materials
are
listed in Appendix C. Note particularly
the listed chemicals with individual standards in the ‘Federal’ column,
since
these compounds generally
have action
limits (usually set at half the TLV), air monitoring
requirements,
and medical monitoring requirements.
If a researcher is using one of these chemicals, or in the unlikely
event that there is a conflict between provisions of various standards,
the
Department of Environmental Health and Safety should be contacted.
4. Responsibilities
Implementation of the Laboratory Safety
Standard at the University is a shared responsibility. Employees,
supervisors,
Research Safety Officers, department heads, deans, upper administrative
staff,
and DEHS staff all have roles to play. These roles are outlined below.
A.
President,
Vice Presidents, Provosts and Chancellors (Central Administration)
Upper
level administrators are responsible for:
·
promoting
the importance of safety in all activities;
·
promoting
the same attitude among all levels of employment
at the University;
·
supporting
a broad-based laboratory safety/chemical hygiene
program that will protect U of MN laboratory employees from health
effects
associated with hazardous chemical, physical or biological agents; and
·
ensuring
that deans, directors and department heads provide
adequate time and recognition for employees who are given laboratory
safety
responsibilities.
Performance
will be measured by:
·
DEHS's
documentation and annual reporting of the level of
compliance within each of the reporting units.
B.
Deans,
Directors and Department Heads
-
- Radiology Dept Chair: Charles
A. Dietz
- CMRR Director: Kamil
Ugurbil
DDDs
are responsible for:
·
identifying
at least one technically-qualified research
safety officer for the unit. (Colleges or institutes that are made up
of a
number of large laboratory-based departments are urged to assign
research
safety officers within each department. Large departments may assign
one
research safety officer for each division);
·
transmitting
the name of the designated research safety
officer to the U of MN's Chemical Hygiene Officer;
·
ensuring
that the designated research safety officer is
adequately trained regarding the roles and responsibilities of the
position;
·
ensuring
that the designated research safety officer
modifies this generic Laboratory Safety Plan to incorporate
location-specific
information;
·
ensuring
that the designated research safety officer reviews
and evaluates the tailored LSP at least annually, and submits a copy of
the
modified plan to the Chemical Hygiene Officer for approval;
·
taking
appropriate measures to assure that
college/department/division activities comply with University and OSHA
laboratory safety policies;
Performance
will be measured by:
·
DEHS's
record of a trained, research safety officer for the
unit.
·
DEHS's
record of a current, tailored Laboratory Safety Plan
for the unit.
C.
Department
of Environmental Health and Safety (DEHS)
The
Chemical Hygiene Officer for the University is Dawn Errede, and the
entire DEHS
staff will participate in providing resources for departments in the
development of their individual health and safety programs. The
Department of
Environmental Health and Safety is responsible for:
·
preparing
and updating the University's generic Laboratory
Safety Plan;
·
distributing
the LSP to departments or other units who will
tailor and implement the plan;
·
training
designated departmental research safety officers
regarding compliance with the laboratory safety standard;
·
monitoring
the progress of departments toward achieving
compliance.
Performance
will be measured by
·
DEHS's
documentation that review and evaluation of the
generic LSP occurs at least annually, updates as necessary;
·
annual
feedback to DDDs regarding DEHS's records of lab
safety officer training and current LSP s within the units;
D.
Research
Safety Officer
The CMRR RSO is Jeramy Kulesa.
The RSO’s Roles
and
Responsibilities are described in greater detail in the RSO Toolkit
(http://www.dehs.umn.edu/training/rso/roles.shtml).
Briefly, the RSO will:
·
serve
as liaison between employing department and the
Department of Environmental Health and Safety;
·
know
the rules, to help researchers comply with applicable
state, federal and university requirements;
·
develop
and implement a Laboratory Safety Plan for the
department;
·
coordinate
training to ensure all researchers understand
their responsibilities and the policies that apply to their research.
·
coordinate
inspections of laboratories and ensure laboratory
supervisors address any noted deficiencies;
·
keep
records to document compliance with state, federal and
university requirements.
Performance
will be measured by DEHS's documentation that:
·
review
and evaluation of the tailored LSP occurs at least
annually;
·
the
research safety officer's personal training records are
current.
E.
Supervisors/Principal
Investigators
The
immediate supervisor of a laboratory employee is responsible for:
·
assuring
that potential hazards of specific projects have
been identified and addressed before work is started;
·
ensuring
there are written, laboratory-specific standard
operating procedures for the protocols carried out in the laboratory
that
incorporate directions about how to mitigate the hazards of the
procedures.
·
informing
and training employees regarding the specific
hazards in their area and in the work they will be doing;
·
scheduling
time for the employee to attend designated
training sessions;
·
enforcing
U of MN safety policies and safe work practices;
·
conducting
periodic audits of the research space under the
supervisors control;
·
reporting
hazardous conditions to the college or
departmental research safety officer;
·
investigate
laboratory accidents and send an Accident
Investigation Worksheet (Appendix N) with recommendations to the
departmental
research safety officer for review.
Performance
will be measured by:
·
home
department's documentation of current, pertinent safety
training for the supervisor and each employee in the supervisor's
group;
·
home
department's documentation of regular audits for
laboratory space under the control of the supervisor.
F.
Employee
Employees
who have significant responsibility for directing their own laboratory
work are
responsible for assuring that potential hazards of specific projects
have been
identified and addressed before work is started. All laboratory
employees
however, are responsible for:
·
attending
safety training sessions;
·
following
safety guidelines applicable to the procedures
being carried out;
·
assuring
that required safety precautions are in place
before work is started; and
·
reporting
hazardous conditions as they are discovered.
Performance
will be measured by:
·
supervisor's
assessment of employee's adherence to topics
covered in safety training.
Chapter 2 - Standard Operating
Procedures
_____________________________________________________________________________________________
As noted in
Chapter 1, Principal Investigators are responsible for ensuring there
are
written standard operating procedures (SOPs) for the research protocols
conducted
in their area. The SOPs must identify
the hazards of the protocol, as well as measures to be taken to
mitigate those
hazards. The references listed below may
provide enough detail to serve as the SOPs for some research protocols. Others
1. Chemical
Procedures
A.
Prudent Practices in the Laboratory
Laboratory
standard operating procedures found in Prudent
Practices in the Laboratory: Handling and Disposal of Chemicals
(National
Research Council, 1995) are adopted for general use at the
Chapter 5 Working with
Chemicals
·
Introduction
·
Prudent
Planning
·
General
Procedures for Working with Hazardous Chemicals
·
Working
with Substances of High Toxicity
·
Working
with Biohazardous and Radioactive Materials
·
Working
with Flammable Chemicals
·
Working
with Highly Reactive or Explosive Chemicals
·
Working
with Compressed Gases
Chapter 6
Working with Laboratory Equipment
·
Introduction
·
Working
with Water-Cooled Equipment
·
Working
with Electrically Powered Laboratory Equipment
·
Working
with Compressed Gases
·
Working
with High/Low Pressures and Temperatures
·
Using
Personal Protective, Safety, and Emergency Equipment
·
Emergency
Procedures
B. The American Chemical
Society's
"Safety in Academic Chemistry Laboratories"
ACS’s
"Safety in Academic Chemistry Laboratories" another useful text. This
manual presents information similar to that found in Prudent Practices,
but in
a considerably condensed format.
C. Hazardous Waste Management
Extensive and
detailed policies regarding hazardous waste management are specified in
the
University's guidebook "Hazardous Chemical Waste Management, 5th
edition”.
Please refer to this text for approved waste handling procedures.
D. Emergency Procedures for
Chemical Spills
The procedures
listed below are intended as a resource for your department in
preparing for
emergencies before they happen. If you are currently experiencing an
emergency
such as a chemical or blood spill, please contact the Department of
Environmental Health and Safety at 612-626-6002.
Complete spill
response procedures are described in the Hazardous Chemical Waste
Management
guidebook (http://www.dehs.umn.edu/guidebook/guidebook3.html). However,
the
quick reference guide is included for convenience in this Laboratory
Safety
Plan.
Quick
Reference Guide
Evacuate
·
Leave
the spill area; alert others in the area and
direct/assist them in leaving.
·
Without
endangering yourself: remove victims to fresh air,
remove contaminated clothing and flush contaminated skin and eyes with
water
for 15 minutes. If anyone has been injured or exposed to toxic
chemicals or
chemical vapors, call 911 and seek medical attention immediately.
Confine
·
Close
doors and isolate the area. Prevent people from
entering spill area.
Report
·
From
a safe place, call the Department of Environmental
Health and Safety (EHS) (612) 626-6002 during working hours, 911 after
hours
(Twin Cities Campus 911 operators will contact on-call EHS personnel).
·
Report
that this is an emergency and give your name, phone
and location; location of the spill; the name and amount of material
spilled;
extent of injuries; safest route to the spill.
·
Stay
by that phone, EHS will advise you as soon as possible.
·
EHS
or the Fire Department will clean up or stabilize
spills, which are considered high hazard (fire, health or reactivity
hazard).
In the case of a small spill and low hazard situation, EHS will advise
you on
what precautions and protective equipment to use.
Secure
·
Until
emergency response personnel arrive: block off the
areas leading to the spill, lock doors, post signs and warning tape,
and alert
others of the spill.
·
Post
staff by commonly used entrances to the area to direct
people to use other routes.
After
an accident, supervisor(s) must complete and fax in reporting forms
within 24
hours. Workers' Compensation policy and reporting forms are available
on the
web (Appendix J).
2.
Biohazardous Procedures
At the
web at http://books.nap.edu/books/0309039754/html/R1.html#pagetop.
In addition,
researchers working with biological materials must acquaint themselves
with the
policies of the university’s Institutional
Biosafety Committee (IBC), which are on the web at
http://www.ibc.umn.edu/homepg.html. The IBC is charged under Federal Regulations
and Regents’ Policy with the oversight of all teaching and research
activities
involving:
If the research involves work with any of
31
infectious agents or 12 biological toxins (federally designated as Select
Agents), follow the procedures outlined
in the Select Agent
section of
the IBC Web page (http://www.ibc.umn.edu/select.html).
3. Radioactive
Procedures
All
researchers using radioactive materials at the
·
contact
the Radiation Protection Division;
·
obtain
a permit for the possession and use of radioactive
materials;
·
complete
required training modules; and
·
comply
with the radiation policies and procedures of the
university (contained in the Radiation
Protection manual).
The Radiation
Protection manual contains information on a number of topics including
license
committees, the permitting process, purchasing procedures, transfer
procedures,
general safety, personnel dosimetry, waste management, emergency
management
(spill control), record keeping, and regulatory guides (declared
pregnancy
workers, risks from ionizing radiation exposure).
Initial
training is required for all personnel who are authorized to access
radiation
areas. Training tapes can be viewed in
4. General
Safety Procedures
Other
Lab Safety
·
Emergency
Eyewash and Safety Shower Installation
·
Eye
Protection/Personal Protective Equipment
·
Flammable
and Combustible Liquid Quantities in U of M
Laboratories
·
Controlled
Substances
·
Greenhouse
Policy-Fumigation/Smoke Generation Procedure
·
Labeling
Chemicals
·
Lock
Out/Tag Out
·
Respiratory
Protection Program
·
Termination
of Laboratory Use of Hazardous Materials
Fire Safety
·
Flammable
and Combustible Liquid Quantities in U of M
Laboratories
·
Fire
Safety at the University
·
Portable
Fire Extinguishers-Type and Placement
General Safety
·
Emergency
Procedures
·
Eye
Protection/Personal Protective Equipment
·
Extension
Cords in University Buildings
·
Foot
Protection/Safety-Toe Shoes
·
·
Portable
Fire Extinguishers-Type and Placement
·
Public
Corridors
·
Respiratory
Protection Program
·
Step
Ladders-Care and Use
·
Temperature
Standard
·
University
of Minnesota Twin Cities Campus Smoke-Free Indoor
Air Policy
·
Supervisors
Injury/Illness Investigation Form
·
Working
with PCBs
5.
Laboratory-Specific Standard Operating Procedures
![]()
Guidance: In this
section, reference any laboratory-specific SOPs that the PIs in the
department
have developed to cover chemicals and/or procedures not addressed in
Subsections A, B, and C (above). Some departments include these SOPs in
a
separate appendix, and attach a Laboratory Safety Information Sheet to
each
protocol/procedure (Appendix
F). In this section, simply note what specific SOPs have been
developed and
how employees can access them.
![]()
This section
summarizes laboratory-specific SOPs. The full text of these SOPs is
included in
Appendix [_], or can be obtained from the referenced PI, or from the
research
safety officer, [name], for the Department of [name]. Safety
information is
included in each SOP, and may be highlighted in a Laboratory Safety
Information
Sheet, similar to the one included in Appendix F.
Laboratory
specific SOPs are kept by the individual lab supervisor/PI’s. A list of any SOP’s which
have been provided to the CMRR RSO will
be appended to this document.
Principal
Investigator
Protocol Name(s)
Location of Protocols
6. General
Emergency Procedures
The procedures
listed below are intended as a resource for your department in
preparing for
emergencies before they happen. If you are currently
experiencing an
emergency such as a chemical or blood spill, please contact the
Department of
Environmental Health and Safety at 612-626-6002.
For University
employees who have been exposed to bloodborne or other infectious
pathogens,
please follow the procedures below under "Needle Stick." For all
other emergencies call 911.
Campus
Safety Information Guidebook
(http://www.dem.umn.edu/guidebook/)
·
bomb
threats
·
medical
emergencies
·
safety
on campus
·
severe
weather
·
utility
outages
·
warning
systems/sirens
Chemical
Spills
(http://www.dehs.umn.edu/hwd/guidebook/guidebook3.html)
Fire Safety
(http://www.dehs.umn.edu/safety/fire/)
Needle Sticks
(http://www.dehs.umn.edu/emergency/needle.html)
Radiation Spills
(http://www.dehs.umn.edu/safety/radspill.html)
Workplace
Violence
(http://www1.umn.edu/ohr/eap/graphics/violence.pdf)
Chapter 3 - Criteria for
Implementation of Chemical Control Measures
_____________________________________________________________________________________________
Engineering controls, personal
protective equipment, hygiene practices, and administrative controls
each play
a role in a comprehensive laboratory safety program. Implementation of
specific
measures must be carried out on a case-by-case basis, using the
following
criteria for guidance in making decisions. Assistance is available from
the
Department of Environmental Health and Safety.
1. Engineering controls
a) Fume Hoods
The laboratory fume hood is the major
protective device available to laboratory workers. It is designed to
capture
chemicals that escape from their containers or apparatus and to remove
them
from the laboratory environment before they can be inhaled.
Characteristics to
be considered in requiring fume hood use are physical state,
volatility,
toxicity, flammability, eye and skin irritation, odor, and the
potential for
producing aerosols. A fume hood should be used if a proposed chemical
procedure
exhibits any one of these characteristics to a degree that (1) airborne
concentrations might approach the action level (or permissible exposure
limit),
(2) flammable vapors might approach one tenth of the lower explosion
limit, (3)
materials of unknown toxicity are used or generated, or (4) the odor
produced
is annoying to laboratory occupants or adjacent units.
Procedures that can generally be
carried out safely outside the fume hood include those involving (1)
water-based solutions of salts, dilute acids, bases, or other reagents,
(2)
very low volatility liquids or solids, (3) closed systems that do not
allow
significant escape to the laboratory environment, and (4) extremely
small
quantities of otherwise problematic chemicals. The procedure itself
must be
evaluated for its potential to increase volatility or produce aerosols.
In specialized cases, fume hoods will
contain exhaust treatment devices, such as water wash-down for
perchloric acid
use, or charcoal or HEPA filters for removal of particularly toxic or
radioactive materials.
Safety shields, such as the sliding
sash of a fume hood, are appropriate when working with highly
concentrated
acids, bases, oxidizers or reducing agents, all of which have the
potential for
causing sudden spattering or even explosive release of material.
Reactions
carried out at non-ambient pressures (vacuum or high pressure) also
require
safety shields, as do reactions that are carried out for the first time
or are
significantly scaled up from normal operating conditions.
Other containment devices, such as
glove boxes or vented gas cabinets, may be required when it is
necessary to
provide an inert atmosphere for the chemical procedure taking place,
when
capture of any
chemical emission is desirable, or when
the standard laboratory fume hood does not provide adequate assurance
that
overexposure to a hazardous chemical will not occur. The presence of
biological
or radioactive materials may also mandate certain special containment
devices. High strength barriers coupled
with remote handling devices may be necessary for safe use of extremely
shock
sensitive or reactive chemicals.
Highly localized exhaust ventilation,
such as is usually installed over atomic absorption units, may be
required for
instrumentation that exhausts toxic or irritating materials to the
laboratory
environment.
Ventilated chemical storage cabinets or
rooms should be used when the chemicals in storage may generate toxic,
flammable or irritating levels of airborne contamination.
2.
Personal Protective Equipment
Bare feet, sandals and open-toed shoes
are not permitted in any laboratory. Short pants and short skirts are
not
permitted in any laboratory, unless covered by a lab coat.
Lab coats are strongly encouraged as routine
equipment for all laboratory workers.
Lab coats are also required when working with select
carcinogens,
reproductive toxins, substances which have a high degree of acute
toxicity,
strong acids and bases, and any substance on the OSHA PEL list carrying
a
"skin" notation. See Appendix B for chemical listings.
Eye protection is required for all
personnel and any visitors whose eyes may be exposed to chemical or
physical hazards.
Side shields on safety spectacles provide some protection against
flying
particles, but goggles or face shields are necessary when there is a
greater
than average danger of eye contact with liquids. A higher than average
risk
exists when working with highly reactive chemicals, concentrated
corrosives, or
with vacuum or pressurized glassware systems. Contact lenses may be
worn under
safety glasses, goggles or other eye and face protection. Experts
currently
believe the benefits of consistent use of eye protection outweigh
potential
risks of contact lenses interfering with eye flushing in case of
emergency.
Gloves made of appropriate material are
required to protect the hands and arms from thermal burns, cuts, or
chemical
exposure that may result in absorption through the skin or reaction on
the
surface of the skin. Gloves are also required when working with
particularly
hazardous substances where possible transfer from hand to mouth must be
avoided. Thus gloves are required for work involving pure or
concentrated
solutions of select carcinogens, reproductive toxins, substances which
have a
high degree of acute toxicity, strong acids and bases, and any
substance on the
OSHA PEL list carrying a "skin" notation.
Since no single glove material is
impermeable
to all chemicals, gloves should be carefully selected using guides from
the
manufacturers. General selection criteria are outlined in Prudent
Practices, p.
132, and glove selection guides are available on the
web
. However, glove-resistance to various
chemicals materials will vary with the manufacturer, model and
thickness.
Therefore, review a glove-resistance chart from the manufacturer you
intend to
buy from before purchasing gloves. When
guidance on glove selection for a particular chemical is lacking,
double glove
using two different materials, or purchase a multi-layered laminated
glove such
as a Silvershield or a 4H.
Respiratory protection is generally not
necessary in the laboratory setting and must not be used as a
substitute for
adequate engineering controls. Availability of respiratory protection
for
emergency situations may be required when working with chemicals that
are
highly toxic and highly volatile or gaseous. If an
experimental protocol requires exposure
above the action level (or PEL) that cannot be reduced, respiratory
protection
will be required. Rarely, an experimental situation may potentially
involve
IDLH (immediately dangerous to life or health) concentrations of
chemicals,
which will require use of respiratory protection. All use of
respiratory
protective equipment is covered under the
3. Hygiene Practices
Eating,
drinking and chewing gum are all strictly prohibited in any laboratory
with
chemical, biological or radioactive materials.
Researchers must also be careful to restrict other actions (such
as
applying lip balm or rubbing eyes) which could inadvertently cause
exposure to
research materials. Consuming alcohol or
taking illegal drugs in a research laboratory are strictly prohibited,
as such
actions potentially endanger the health and safety of not only the
user, but
everyone in the building. Infractions
will be met with serious disciplinary action.
Before leaving the laboratory, remove
personal protective equipment/clothing (labcoat and gloves) and wash
hands
thoroughly. Do NOT wear
laboratory gloves in public spaces such as hallways and
elevators.
4. Administrative Controls
Researchers are strongly encouraged to
prioritize research so that work with hazardous chemical, biological or
physical agents occurs only during working hours (
Supervisors
shall consider the hazards involved in their research, and designate
areas,
activities, and tasks that require specific types of personal
protective
equipment as described above.
Chapter 4 - Management of Chemical
Fume Hoods and Other Protective Equipment
_____________________________________________________________________________________________
1. Monitoring Safety Equipment
Fume hoods must be monitored daily by
the user to ensure that air is moving into the hood. Any malfunctions
must be
reported immediately to the appropriate Facilities Management zone
office. The
hood should have a continuous reading device, such as a pressure gauge,
to
indicate that air is moving correctly. Users of older hoods without
continuous
reading devices should attach a strip of tissue or yarn to the bottom
of the
vertical sliding sash. The user must ensure the hood and baffles are
not
blocked by equipment and bottles, as air velocity through the face may
be
decreased. DEHS staff will measure the average face velocity of each
fume hood
annually with a velometer or a thermoanemometer. A record of monitoring
results
will be made.
CMRR (Bldg 180) is served by Facilities
Management, Zone 4. They may be
contacted at 624-2900 or you may call BESAC at 625-0011
.
Eye washes must be flushed weekly by
the user. This will ensure that the eye wash is working, and that the
water is
clean, should emergency use become necessary. The user should
coordinate with
[Facilities Management or Hospital Engineers (phone number)] to ensure
that
emergency showers and eye washes are checked annually. Fire
extinguishers will
be checked annually by a University contractor. The user is responsible
for
checking regularly to ensure that other protective equipment is
functioning
properly. Environmental Health and Safety staff can assist with these
evaluations, should assistance be necessary.
General laboratory conditions must be
monitored periodically by the users. A generic laboratory audit form is
included in Appendix G, and may be tailored for use by individual
laboratories.
The departmental Research Safety Officer or the University's Chemical
Hygiene
Officer may also use this form for spot-checks of the laboratories.
2. Acceptable Operating Range
The acceptable operating range for fume
hoods is 80 to 150 linear feet per minute, at the designated sash
opening
(usually 18 inches). If, during the annual check, a hood is operating
outside
of this range, DEHS staff may request that you check to ensure the
baffles are
adjusted properly, and that the exhaust slots are not blocked by
bottles and
equipment. If these adjustments do not help, DEHS staff will report the
deficiency to the appropriate Facilities Management zone office for
servicing.
3. Maintenance
During
maintenance of fume hoods, laboratories must clean out and if
necessary,
decontaminate the fume hood and restrict use of chemicals to ensure the
safety
of maintenance personnel. See "Safe Practices During Servicing of
Exhaust
Systems in Research Facilities" in Appendix E.
4. Training
Training
in the appropriate use and care of fume hood systems, showers,
eyewashes and
other safety equipment must be included in the initial and update
training
described in Section 5.
5. New Systems
When new ventilation systems, such as
variable air volume exhaust, are installed in University facilities,
specific
policies for their use will be developed by the Department of
Environmental
Health and Safety and employees will be promptly trained on use of the
new
equipment.
Chapter 5 - Employee Information
and Training
_____________________________________________________________________________________________
1.
Information
It is essential that laboratory
employees have access to information on the hazards of chemicals and
procedures
for working safely. Supervisors must ensure that laboratory employees
are
informed about and have access to the following information sources:
The contents of the
OSHA Laboratory Safety Standard
"Occupational Exposure to
Hazardous Chemicals in
Laboratories" and its appendices (29
CFR 1910.1450).
A copy of this federal standard can be found in Appendix A of this
Laboratory
Safety Plan.
The
This generic LSP is
available to all employees on the Department of Environmental Health
and
Safety's web site (www.dehs.umn.edu) and in the Learning Resource
Centers of
the various campus libraries. Individual department Laboratory Safety
Plans are
available within those departments.
The
Permissible Exposure Limits (PELs)
PELs for OSHA
regulated substances can be found in Appendix B. Also included in
Appendix B
are the ACGIH Threshold Limit Value (TLV) list, a list of OSHA health
hazard
definitions, lists of "select carcinogens" and reproductive toxins,
and chemicals having a high degree of acute toxicity.
Signs
and symptoms associated with exposures to hazardous chemicals.
http://www.hhmi.org/research/labsafe/overview.html
Laboratory Chemical
Safety Summaries (LCSSs) are included on pages 235-413 of the 1995
edition of
Prudent Practices. LCSSs are similar to Material Safety Data Sheets
(MSDS), but
are tailored to the hazards of laboratory use of those chemicals. The
LCSSs
include toxicity information, and signs and symptoms of exposure to the
chemicals.
Material
Safety Data Sheets (MSDSs)
MSDSs are available
online through links from the Department of Environmental Health and
Safety's
web site. Hard copies of MSDS for many laboratory chemicals are also
available
from DEHS or departmental safety offices. Individual researchers are
encouraged to keep hard copies in an easily accessible location for
materials
that are used in large quantities, which are used frequently, or which
are
particularly toxic.
Information
on chemical waste disposal and spill response
The
2. Training
Each laboratory supervisor is
responsible for ensuring that laboratory employees are provided with
training
about the hazards of chemicals present in their laboratory work area,
and
methods to control exposure to such chemicals. Such training must be
provided
at the time of an employee's initial assignment to a work area where
hazardous
chemicals are present and prior to assignments involving new potential
exposure
situations. Refresher training must be provided annually.
Colleges and non-academic departments
that engage in the laboratory use of hazardous chemicals are
responsible for
identifying employees who require training and for developing and
delivering
training programs for such employees. DEHS offers training on the third
Thursday of each month that covers general laboratory safety issues,
hazardous
waste management, and biohazardous materials handling. Departments are
welcome
to send employees to this 'base' training at no charge. However,
laboratory
supervisors must provide additional training on laboratory-specific
hazards to
ensure all the OSHA-required training topics have been adequately
addressed.
Call DEHS at 626-6002 to register trainees.
Employee
training programs will include, at a minimum, the following subjects:
Methods
of detecting the presence of hazardous chemicals;
Method include visual
observation, odor, real-time air monitoring, time-weighted air
sampling, etc.).
Basic
toxicological principles;
Principles include
toxicity, hazard, exposure, routes of entry, acute and chronic effects,
dose-response relationship, LD50, threshold limit values and
permissible
exposure limits, exposure time, and health hazards related to classes
of
chemicals.
Prudent
laboratory practices;
Prudent laboratory
practices include general techniques designed to reduce personal
exposure and
to control physical hazards, as well as specific protective mechanisms
and
warning systems used in individual laboratories. Appropriate use of
fume hoods
is to be specifically addressed.
Description
of available chemical information;
Container labels,
Material Safety Data Sheets, etc.
Emergency
response actions appropriate to individual laboratories;
Lists of emergency
phone numbers, location of fire extinguishers, deluge showers,
eyewashes, etc.
Applicable
details of the departmental Laboratory Safety Plan;
Details should
include general and laboratory-specific Standard Operating Procedures.
An
introduction to the Hazardous Chemical Waste Management guidebook; and
The
script for the video Laboratory Chemicals and Your Health.
This video (script included in Appendix
I) is an
example of
information meeting the requirements of the first three items of this
list.
Laboratory Chemicals and Your Health is available in either slide-tape
or video
format. A more complete list of audio-visual material available from
the
Department of Environmental Health and Safety, the University Library
System,
and other resources is included in Appendix H.
Chapter 6 - Required Approvals
_____________________________________________________________________________________________
A.
The Center for Magnetic Resonance
Research requires pre-approval for the following operations/ chemicals,
based
upon the chemical, physical and toxicological characteristics of the
material,
as well as quantity, concentration, and potential for exposure during
actual
use:
At
this time no CMRR labs use any of the operations/chemicals listed in
Tables
1-5, thus no SOP’s requiring pre-approval have been submitted by the
PI’s. At such time that a PI considers use
of any
of the operations/chemicals identified in Tables 1-5, prior approval
and a
written SOP will be required before such items may be purchased and
used in
studies.
B.
The PI will develop a written procedure
to be followed for obtaining approval for restricted
operations/chemical at the
time the SOP’s are developed and written. Should a PI decide in the
future to
use operations/chemicals listed in Tables 1-5, the PI will work with
the CMRR
to develop a written procedure to be followed for obtaining approval
for
restricted operations/chemicals.
The
Center for Magnetic Resonance Research requires researchers to follow
the
following procedure for obtaining approval for the operations/chemicals
listed
above.
Step 1:
The PI and RSO will develop a written SOP
Step 2: The
PI will present the SOP to a meeting of
the CMRR Research Safety Committee for
approval.
A
written record of approvals will be kept within the CMRR.
Chapter 7 - Medical Consultation
and Examination
_____________________________________________________________________________________________
1.
Employees Who Work With Hazardous Substances
All employees who work with hazardous
substances will have an opportunity to receive medical attention,
including any
follow-up visits that the examining physician determines to be
necessary, under
the following circumstances:
Signs
or symptoms of exposure
Whenever an employee
develops signs or symptoms associated with a hazardous substance or
organism to
which the employee may have been exposed in the laboratory, the
employee will
be provided an opportunity to receive an appropriate medical
examination.
Exposure
monitoring
Where exposure
monitoring reveals an exposure level routinely above the action level
(or in
the absence of an action level, the PEL) for an OSHA regulated
substance for
which there are exposure monitoring and medical surveillance
requirements,
medical surveillance will be established for the affected employee as
prescribed by the particular standard.
Exposure
incident
Whenever an event
takes place in the work area such as a spill, leak, explosion or other
occurrence resulting in the likelihood of a hazardous exposure, the
affected
employee will be provided an opportunity for a medical consultation.
Such
consultation will be for the purpose of determining the need for a
medical
examination.
Physical
Injury
Whenever an employee
is physically hurt or injured on the job, the affected employee will be
provided an opportunity for a medical consultation and/or examination.
Physical
injuries include but ar not limited to cuts, burns, punctures and
sprains.
Contact the Chemical Hygiene Officer
whenever the need for medical consultation or examination occurs, or
when there
is uncertainty as to whether any of the above criteria have been met.
2. Medical Examinations and
Consultations
In the event of a life-threatening
illness or injury, dial 911 and request an ambulance. Employees with
urgent,
but non-life-threatening, illnesses or injuries should go to the
nearest
medical clinic. The
3.
Workers' Compensation Procedures and Forms
It is very important that even minor
job-related injuries or illness are reported. These statistics help the
Department of Environmental Health and Safety track trends that may
indicate
occupational hazards that need evaluation. To report an illness or
injury, go
to the Workers’
Compensation website.
This policy explains the procedures and
provides the necessary reporting forms. As long as the illness or
injury is not
life threatening, the supervisor should provide the employee with:
·
a
brochure describing Workers' Compensation Information for
the
·
a
completed Employers' Authorization for Care form; and
·
a
Work Status Report for the physician to complete and
return to the supervisor.
·
Within
24 hours, the
supervisor should complete:
·
a
State of Minnesota First Report of Injury form;
·
a
U of MN Employee Incident Report form; and
·
a
U of MN Supervisor Incident Investigation Report.
·
Within
24 hours,
supervisors must fax the State form to Sedgwick Claims Management
Services at
(612) 826-3785, and the U of MN forms to the
4. Information Provided to Physician
The employee's supervisor or department
will collect and transmit the following information to the examining
physician:
·
The
identity of the hazardous substance(s) to which the
employee may have been exposed;
·
A
description of the conditions under which the exposure
occurred including quantitative exposure data, if available; and
· A description of the signs and symptoms of exposure that the employee is experiencing, if any.
5. Information Provided to the
Supervisors should request that the
examining physician provide them with a written report including the
following:
·
Any
recommendation for further medical follow-up;
·
The
results of the medical examination and any associated
tests;
·
Any
medical condition which may be revealed in the course of
the examination which may place the employee at increased risk as a
result of
exposure to a hazardous chemical found in the workplace; and
·
A
statement that the employee has been informed by the
physician of the results of the consultation or medical examination and
any
medical condition that may require further examination or treatment.
The written opinion will not reveal specific findings of diagnoses unrelated to occupational exposure.
Chapter 8 – Personnel
_____________________________________________________________________________________________
The following individuals and groups
have responsibilities for implementation of various aspects of the
Chemical
Hygiene Officer
The
College
or Departmental Research Safety Officer
The Research Safety
Officer
for the Center for Magnetic Resonance Research is Jeramy Kulesa. The
specific
duties of each safety officer will be determined at the college or
departmental
level. The duties of this RSO are included in Appendix K.
College
or Departmental Safety Committee
The CMRR Safety
Committee will consist of the CMRR RSO and CMRR PI’s.
Currently, this committee consists of:
Jeramy
Kulesa, CMRR RSO
Kamil Ugurbil, CMRR Director
CMRR Faculty: Michael Garwood, Rolf
Gruetter, Wei Chen,
Dae-Shik Kim, Geoffrey Ghose,
J Thomas Vaughan, Noam
Harel, Essa Yacoub, and
Itamar Ronen
Department
of Environmental Health and Safety
The Department of
Environmental Health and Safety offers assistance in a wide range of
health and
safety issues. A departmental organizational chart, list of services
offered,
and staff phone numbers are included in Appendix L.
Address:
W-140 Boynton. Phone: 612-626-6002.
Occupational
Physician
The
Chapter 9
- Additional Employee
Protection
for Work
with Particularly
Hazardous
Substances
_____________________________________________________________________________________________
Guidance:
The PI’s in the CMRR must consider the
toxicity of the chemicals used and the hazards of each procedure, and
decide
whether the procedure requires the use of additional protective
measures.
Chemicals listed in Tables 1-5 could be considered for additional
protective
measures. The additional protective measures should be incorporated in
the
Standard Operating Procedure. Each PI should forward a list of these
SOPs to
the departmental Research Safety Officer for reference in this section
of the
LSP. If none of the SOPs require additional protective measures, the PI
should
note this fact and forward a brief explanation to the RSO. EHS staff is
available to help PIs evaluate the need for additional protective
measures.
![]()
Additional employee protection will be
considered for work with particularly hazardous substances. These
include
select carcinogens, reproductive toxins and substances that have a high
degree
of acute toxicity (see Appendix B). Pp. 90-93 of the 1995 edition of
Prudent
Practices provides detailed recommendations for work with particularly
hazardous substances. These pages may be accessed from DEHS's web site
at
www.dehs.umn.edu. Also, DEHS has hard
copies of the entire 1995 edition available for departmental Research
Safety
Officers. Laboratory supervisors and
principal investigators are responsible for assuring that laboratory
procedures
involving particularly hazardous chemicals have been evaluated for the
level of
employee protection required. Specific consideration will be given to
the need
for inclusion of the following provisions:
1. Planning;
2.
Establishment of a designated area;
3.
Access control
4.
Special precautions such as:
·
use
of containment devices such as fume hoods or glove
boxes;
·
use
of personal protective equipment;
·
isolation
of contaminated equipment;
·
practicing
good laboratory hygiene; and
·
prudent
transportation of very toxic chemicals.
5.
Planning for accidents and spills; and
6.
Special storage and waste disposal practices.
Chapter 10 - Record Keeping,
Review and Update of Laboratory Safety Plan
_____________________________________________________________________________________________
1.
Record Keeping
Exposure
evaluation
Any records of
exposure evaluation carried out by individual departments (including
continuous
monitoring systems) will be kept within the department and also sent to
the
Department of Environmental Health and Safety. Results of exposure
evaluations
carried out by DEHS will be kept by DEHS and sent to the affected
department.
Raw data will be kept for one year and summary data for the term of
employment
plus 30 years.
Medical
consultation and examination
Results of medical
consultations and examinations will be kept by the Boynton Health
Service for a
length of time specified by the appropriate medical records standard.
This time
will be at least the term of employment plus 30 years as required by
OSHA.
Training
Individual employee
training should be recorded on form BA 725A (see Appendix M) and should
be kept
in the individual's department or college for five years. These forms
may be
audited by the University Audit Department. Training records are
kept in the Center for Magnetic Resonance Research and are available
for audit.
Fume
hood monitoring
Data on annual fume
hood monitoring will be kept in the Department of Environmental Health
and
Safety. Fume hood monitoring data are considered maintenance records
and as
such the raw data will be kept for one year and summary data for 5
years.
2. Review and Update of Laboratory
Safety Plan
On an annual basis, this Laboratory
Safety Plan will be reviewed and evaluated for effectiveness by the
Department
of Environmental Health and Safety and updated as necessary. Any
changes in the
Laboratory Safety Plan will be transmitted to college and departmental
research
safety officers, who are responsible for carrying out a similar review
and
modification of their plans, and submitting a revised copy to the
Chemical
Hygiene Officer.
Division: Center
for Magnetic Resonance Research
Director: Kamil Ugurbil
RSO:
Jeramy
Kulesa
Department: Radiology
Chair: Charles A.
Dietz, MD
College:
U
of MN Research Laboratory Safety Plan
Table
1 - Poisonous Gases
The
gases on this list are either on
the Department of Transportation's Category 1 list, or the Linde
Specialty
Gases company's Group 6 – Very Poisonous list. These chemicals are
highly toxic
gases at ambient temperature and pressure. They have an extremely high
potential for causing significant harm if not adequately controlled.
|
Arsine
|
Boron
trichloride |
Chlorine
pentafluoride |
|
Chlorine
trifluoride
|
Cyanogen |
Cyanogen
chloride |
|
Diborane |
Dinitrogen
tetroxide |
Fluorine |
|
Germane
|
Hydrogen
selenide |
Nitric
oxide |
|
Nitrogen
dioxide
|
Nitrogen
trioxide |
Nitrosyl
chloride |
|
Oxygen
difluoride
|
Phosgene |
Phosphine |
|
Phosphorus
pentafluoride
|
Selenium
hexafluoride
|
Stibine |
|
Sulfur
tetrafluoride
|
Tellurium
Hexafluoride |
Tetraethyldithiopyrophosphate |
|
Tetraethylpyrophosphate
|
|
|
Guidance:
Departments may choose to add
other chemicals to the above list. For example, sulfur-containing
compounds
such as mercaptans can cause significant odor problems when used in the
laboratory. Pre-approval of the conditions under which they can be used
may
prevent odor complaints.
U of MN
Research Laboratory
Safety Plan
Table 2 -
Shock Sensitive Chemicals
The
classes of chemicals listed below may explode when subjected to shock
or
friction. Therefore users must have appropriate laboratory equipment,
information, knowledge and training to use these compounds safely.
·
Acetylenic
compounds, especially polyacetylenes,
haloacetylenes, and heavy metal salts of acetylenes (copper, silver,
and
mercury salts are particularly sensitive)
·
Acyl
nitrates
·
Alkyl
nitrates, particularly polyol nitrates such as
nitrocellulose and nitroglycerine
·
Alkyl
and acyl nitrites
·
Amminemetal
oxosalts: metal compounds with coordinated and
hydrazine, or similar nitrogenous donors and ionic perchlorate,
nitrate,
permanganate, or other oxidizing group
·
Azides,
including metal, nonmetal, and organic azides
·
Chlorite
salts of metals, such as AgClO2 and Hg(ClO2)2
·
Diazo
compounds such as CH2N2
·
Diazonium
salts, when dry
·
Fulminates
such as mercury fulminate (Hg(CNO)2)
·
Hydrogen
peroxide (which becomes increasingly treacherous as
the concentration rises above 30%, forming explosive mixtures with
organic
materials and decomposing violently in the presence of traces of
transition
metals
·
N-Halogen
compounds such as difluoroamino compounds and
halogen azides
·
N-Nitro
compounds such as N-nitromethylamine, nitrourea,
nitroguanidine, and nitric amide
·
Oxo
salts of nitrogenous bases: perchlorates, dichromates,
nitrates, iodates, chlorites, chlorates, and permanganates of ammonia,
amines,
hydroxylamine, guanidine, etc.
·
Perchlorate
salts (which can form when perchloric acid mists
dry in fume hoods or associated duct work. Most metal, nonmetal, and
amine
perchlorates can be detonated and may undergo violent reaction in
contact with
combustible materials)
·
Peroxides
and hydroperoxides, organic
·
Peroxides
(solid) that crystallize from or are left from
evaporation of peroxidizable solvents (see the following Section 3)
·
Peroxides,
transition-metal salts
·
Picrates,
especially salts of transition and heavy metals,
such as Ni, Pb, Hg, Cu, and Zn
·
Polynitroalkyl
compounds such as tetranitromethane and dinitroacetonitrile
·
Polynitroaromatic
compounds especially
polynitrohydrocarbons, phenols, and amines (e.g., dinitrotoluene,
trinitrotoluene, and picric acid)
Note:
Perchloric acid must be used only in specially-designed perchloric acid
fume
hoods that have built-in wash down systems to remove shock-sensitive
deposits.
Before purchasing this acid, laboratory supervisors must arrange for
use of an
approved perchloric acid hood.
U of MN
Research Laboratory
Safety Plan
Table 3 -
Pyrophoric Chemicals
The
classes of chemicals listed below will readily oxidize and ignite
spontaneously
in air. Therefore, users must demonstrate to the department that they
have the
appropriate laboratory equipment, information, knowledge and training
to use
these compounds safely.
·
Grignard
reagents, RMgX
·
Metal
alkyls and aryls, such as RLi, RNa, R3Al, R2Zn
·
Metal
carbonyls such as Ni(CO)4, Fe(CO)5, Co2(CO)8
·
Alkali
metals such as Na, K
·
Metal
powders, such as Al, Co, Fe, Mg, Mn, Pd, Pt, Ti, Sn,
Zn, Zr
·
Metal
hydrides such as NaH, LiAlH4
·
Nonmetal
hydrides, such as B2H6 and other boranes, PH3, AsH3
·
Nonmetal
alkyls, such as R3B, R3P, R3As
·
Phosphorus
(white)
U of MN
Research Laboratory
Safety Plan
Table 4 -
Peroxide-Forming
Chemicals
The
chemicals listed below can form explosive peroxide crystals on exposure
to air,
and therefore require special handling procedures after the container
is
opened. Some of the chemicals form peroxides that are violently
explosive in
concentrated solution or as solids, and therefore should never be
evaporated to
dryness. Others are polymerizable unsaturated compounds and can
initiate a
runaway, explosive polymerization reaction. All peroxidizable compounds
should
be stored away from heat and light. They should be protected from
physical damage
and ignition sources. A warning label should be affixed to all
peroxidizable
materials to indicate the date of receipt and the date the container
was first
opened. Due to these special handling requirements, users must have the
appropriate laboratory equipment, information, knowledge and training
to use
these compounds safely.
A.
Severe
Peroxide Hazard with Exposure to Air (discard within 3 months from opening)
·
diisopropyl
ether (isopropyl ether)
·
divinylacetylene
(DVA)
·
vinylidene
chloride (1,1-dichloroethylene)
·
potassium
metal
·
sodium
amide (sodamide)
·
potassium
amide
B.
Peroxide
Hazard on Concentration
Do
not distill or evaporate without first testing for the presence of
peroxides
(discard or test for peroxides after 6 months)
·
acetaldehyde
diethyl acetal (acetal)
·
cumene
(isopropylbenzene)
·
cyclohexene
·
cyclopentene
·
decalin
(decahydronaphthalene)
·
diacetylene
(butadiene)
·
dicyclopentadiene
·
diethyl
ether (ether)
·
diethylene
glycol dimethyl ether (diglyme)
·
dioxane
·
ethylene
glycol dimethyl ether (glyme)
·
ethylene
glycol ether acetates
·
ethylene
glycol monoethers (cellosolves)
·
furan
·
methylacetylene
·
methylcyclopentane
·
methyl
isobutyl ketone
·
tetrahydrofuran
(THF)
·
tetralin
(tetrahydronaphthalene)
·
vinyl
ethers
C.
Hazard of
Rapid Polymerization Initiated by Internally-Formed Peroxides
Liquids
(discard or test for peroxides after 6 months)
Chloroprene (2-chloro-1, 3-butadiene)
·
vinyl
acetate
·
styrene
·
vinylpyridine
Gases (discard after 12 months)
·
butadiene
·
vinylacetylene
(MVA)
·
tetrafluoroethylene
(TFE)
·
vinyl
chloride
U of MN
Research Laboratory
Safety Plan
Table 5 -
Carcinogens,
Reproductive Toxins
or Highly Toxic
Chemicals
The
chemicals listed below are extremely hazardous. Workers must have
knowledge of
the dangers of these chemicals prior to use, and documentation of
training in
safe working procedures.
Biologically
active compounds
·
protease
inhibitors (e.g. PMSF, Aprotin, Pepstatin A,
Leopeptin);
·
protein
synthesis inhibitors (e.g. cycloheximide,
Puromycin);
·
transcriptional
inhibitors (e.g. a-amanitin and actinomycin
D);
·
DNA
synthesis inhibitors (e.g. hydroxyurea, nucleotide
analogs (i.e.
·
dideoxy
nucleotides), actinomycin D, acidicolin);
·
phosphatase
inhibitors (e.g. okadaic acid);
·
respiratory
chain inhibitors (e.g. sodium azide);
·
kinase
inhibitors (e.g. NaF);
·
mitogenic
inhibitors (e.g. colcemid); and
·
mitogenic
compounds (e.g. concanavalin A).
Castor
bean (Ricinus communis) lectin: Ricin A, Ricin B, RCA toxins
Diisopropyl
fluorophosphate: highly toxic cholinesterase inhibitor; the antidote,
atropine
sulfate and 2-PAM (2-pyridinealdoxime methiodide) must be readily
available
Jaquirity
bean lectin (Abrus precatorius)
N-methyl-N'-nitro-N-nitrosoguanidine:
carcinogen (this chemical forms explosive compounds upon degradation)
Phalloidin
from Amanita Phalloides: used for staining actin filaments
Retinoids:
potential human teratogens
Streptozotocin:
potential human carcinogen
Urethane
(ethyl carbamate): an anesthetic agent, potent carcinogen and strong
teratogen,
volatile at room temperature
*See
the DEHS Web site at http://www.dehs.umn.edu/safety/lsp/
for appendices.