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Stanford University
Environmental Health and Safety
480 Oak Road
Stanford, CA 94305-8007
650-723-0448
Contributed by
Industrial Hygienist, Esther Luckhardt
The departments of Environmental Health
and Safety and Human Resources have collaborated on two new employee
and labor relations guidelines concerning the issues of safety and
health related to minors and pets and other animals in the workplace
at Stanford University. The guidelines were developed in part to
address possible health and safety concerns for minors in specific
work settings (labs and other potentially hazardous work areas)
and the fact that pets and other animals may pose potential health,
safety and hygiene issues. Please contact your local human resource
officer or EH&S for more information regarding either guidelines:
1) Exclusion
of Minors in the Workplace at Stanford University or
2) Restriction
of Pets and other Animals in Stanford University Buildings.
Contributed by
Facilities Engineer, Tracy Ingebrigtsen
In the fall of 2003 our drinking water
supplier, the San Francisco Public Utilities Commission, will switch
from chlorine to chloramine disinfection for drinking water. The
main reason for the change is to ensure compliance with stricter
federal and state water quality regulations.
Chloramine, similar to chlorine, disinfection has many benefits,
including protecting customers from bacteria, viruses and most other
microbes that can be found in water. Chloramine is a chemical compound
formed by the addition of a small amount of ammonia to the chlorine
water mix. The disinfection properties of chloramine last longer
than chlorine in the distribution system providing increased protection
for the water while it is in the reservoirs and pipelines on its
way to your tap.
While switching to chloramine disinfection is intended to improve
public health overall by lowering disinfection byproducts, some
consumers will need to take precautions. At Stanford University
the impact of the switch will be felt most by aquaria owners and
research involving highly processed water.
Fish and some amphibians and reptiles pass water through their gills
directly into the bloodstream. Like chlorine, chloraminated water
can do harm if passed directly into the bloodstream of aquaria pets.
Chloramine can be removed from water with water treatment products
(drops or tablets) or specified carbon filters. These products are
readily available at most pet supply stores.
For research using highly processed water, chloramine may need to
be removed from the water prior to use. Chloramine removal may be
achieved by adjusting or upgrading current filtration and treatment
systems. Contact your building or zone manager if you are concerned
about a specific piece of equipment in your research space.
Additional information is provided at the Stanford University -
Water Department web site: www.stanford.edu/group/water
or contact the Chloramine Information Line at 723-8030.
Contributed by
Environmental Programs Specialist, Heather Perry
EH&S' award winning Battery Recycling
Program recently expanded to include Student Housing Services (SHS).
SHS' Health and Safety Coordinator, Don Rust, coordinated with the
E-Reps, a student environmental organization, to help establish
drop off locations within the residence halls. The new locations
will greatly enhance students' ability to easily recycle their used
batteries. Residences with drop off locations include Florence Moore
Hall, Governor's Corner, Roble Hall, Stern Hall, Wilbur Hall, Manzanita
Hall and Slavianskii Dom.
EH&S was awarded the 2002 Environmental Achievement Award by
the Federal Environmental Protection Agency for its Battery
Recycling and Mercury
Thermometer Replacement Programs. For more information about
either program please click on the underlined program links.
If you have questions, you may contact Heather Perry at extension
3-1308.
Contributed by
Emergency Planning Manager, Roni Wade
The Stanford Campus Emergency Exercise
held in November 2002 provided new learning for the Emergency Preparedness
Program Management Team that participated. Exercises are intended
for practicing, discovering, and generating renewed commitment for
continued improvement. As a result of the active participation and
feedback of academic and administrative Satellite Operations Centers
(SOCs), we will be updating the written SOC Guidelines document
in 2003, and we will also offer special training workshops to support
local SOC planning. Contact Roni Wade
if you would like to request some special assistance in developing
your SOC or department emergency plans.
Contributed by
Accounting Administrator, Karla Cassady
Environmental
Health & Safety is distributing 2003 pop-up calendars as a small
gift to campus colleagues and departments. We like using these fun
and convenient calendars to provide quick access to our department
and emergency contact information. This calendar's artistic design
is a representation of a globe of the earth. It utilizes a photograph
of the earth taken from the Space Shuttle. We hope that these pop-up
calendars will bring enjoyment and also maintain an open line of
communication between the University campus and the EH&S department.
If you are interested in obtaining a pop-up calendar, please contact
Karla Cassady, by email at kcassady@stanford.edu,
or by telephone at 650-724-0794.
Contributed by
Senior Health Physicist, Mark How
Positron Emission Tomography (PET) is
a fast growing imaging modality within Nuclear Medicine. It is useful
in detecting cancer and staging the severity of disease, in cardiovascular
disease and in diagnosing neurological disease. PET scanning displays
the metabolism of organ systems and so differs from the more common
Computed Tomography (CT) or Magnetic Resonance Imaging (MRI), which
display the structure of organs. The new device, which has arrived
on the Stanford University campus, is a hybrid device that incorporates
both PET and CT into a single device. This will enable the creation
of fused images that display the anatomy and the diseased area in
a single image. The PET/CT scanner looks like a lager version of
the now familiar CT scanner. The PET portion of the scanner has
a large ring detector, while the CT portion utilizes an x-ray tube
and a detector of its own. The patient would lie down on an imaging
couch and would then be moved through the doughnut shaped device
during an imaging procedure. The new PET/CT scanner is housed in
a modular building on the Blake Wilbur parking lot. Final preparations
are being made and it is expected that patients may be seen at the
new facility by the end of January.
The most commonly used radiopharmaceutical for PET scanning at present
is Fluorodeoxyglucose (FDG). Radioactive Fluorine-18 has a short
half-life of 110 minutes. FDG is a valuable tool for use in diagnosing
diseases of various types. Because many cancerous tumors have high
metabolic rates, they take up more of the FDG than adjacent tissue
and so are observed on a PET scan. Staging of cancer severity or
monitoring the effectiveness of a therapeutic regimen can be achieved.
A diagnostic question in cardiovascular applications is whether
areas of the heart muscle are still viable, but have a decreased
blood supply, or is the tissue scarred. FDG may be taken up in viable
muscle with a decreased blood supply, and so a clinical decision
can be made concerning whether to attempt to restore blood supply
to a region of the heart through surgery. Neurological diagnoses
can be made concerning Alzheimer's disease, Parkinson's disease
and epilepsy. For more information on PET scanning please try the
web site of the Society of Nuclear
Medicine.
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