SAFETY (A TEST WILL BE GIVEN)
The cautions and warnings
outlined on this page and discussed in class cannot cover all
possible conditions and situations that may occur while working
with circuits, tools and test equipment. Each person
must supply and use common sense, diligence and caution and must
have respect for potential danger and for safety precautions,
which are factors that cannot be supplied by written materials
or instruction. There is no guarantee of safety.
- Students will be given a
safety test to be graded PDF (see
the third page of the PDF) covering the material below. Numeric
placement on this list does not necessarily imply a level of importance.
- Classroom activities are not homework. They are to be constructed
and tested only in the classroom under appropriate supervision,
following classroom safety rules and schedules, using all necessary
safety equipment. Materials used to construct activities will
not be supplied for assembly outside the classroom. Items built
to take home should only be used with adult supervision.
- If you are in
the least doubt about how to proceed or how to use any tool
or item of equipment, you should ask only the instructor for help
before you continue.
- Report to the instructor
or technician damaged tools, equipment, missing items or accessories
and tools or equipment not working properly.
- Operate equipment only
when the instructor is present in the room.
eye protection (conforming to ANSI Z87.1) is used whenever appropriate.
A student without them will not be allowed to participate in
that activity and may be required to leave the room. Activities
cannot be "made up" or completed elsewhere, so the student
may lose that grade.
- Students are respsonsible
for keeping the classroom free of their refuse and material waste (filings,
dust, cut leads, etc.) and for keeping the the floor unobstructed
(no cords or hoses) and clean.
- Personal electronic components,
private projects and outside equipment are allowed in the classroom
only with the instructor’s prior approval.
- Passing just
this course will NOT qualify you to repair your radio, T.V. or computer,
service appliances, or use a title such as “electronics technician.”
- Even when switched off,
equipment may still be unsafe. Treat components as though they
may be thermally hot and as if they might still have a dangerous electrical
charge. Cells and batteries that are included with activities
must not be allowed to touch metal when transported (no pocket change,
binder clips, etc).
- Pass tools
to others handles first, gently.
- The hot glue gun's tip
and the hot glue are indeed HOT. Never touch the glue gun tip
and wait for several minutes before touching the applied glue.
- Before leaving a soldering
iron (or other tool), make sure it is off, cool, stopped and then
return it to the tool cart.
- Activities in this class
should be modified, or components substituted, only with
the instructor's permission, because modifications might make them
unsafe. These safety guidelines apply to the activities designed
for this class and may not be adequate for other circuits or other
- Use tools
only for their intended purpose (usually their only purpose).
Avoid damage to the work, tool breakage and/or injury to
- Injuries must be reported
immediately to the instructor. Students may be required to complete
a school accident report
- Students are allowed to
operate equipment, tools and test gear
only if they have been given instruction in class, they have current
permission AND they have a current assignment.
- Electrical shock should
be considered deadly and electricity treated with respect and care.
- Wash away any chemical
or solvent coming in contact with your body with lots of water.
- The type of fire extinguisher
seen in THIS room may be used to extinguish any type of fire, including
- Water should not be used
to extinguish an electrical fire.
- The proper procedure for
using an extinguisher is to follow the PASS acronym:
the pin. This allows the device to be activated.
at the base of the fire. Put out the fuel, not the flame.
the lever slowly. Releasing the handle will stop the
from side to side. Start this from a safe distance and move
closer as the flames are reduced. Do not endanger yourself
Read the extinguisher's instructions before you need to use it.
Remember: "P.A.S.S. the fire-extinguisher please!"
- Do not lift heavy objects.
Ask for assistance.
- In the event of an alarm,
students should gather their personal belongings, follow the safest
route to the meeting place, if that area and route are safe, and wait
for the instructor to take roll.
This is discussed in:
Classroom Emergency Procedures.
- Material Safety Data Sheets
(MSDS) may be viewed anytime you are in this class.
- Material Safety Data Sheets
contain health and pertinent data (reactivity, flammability, inhalation
data, etc.) on possible nearby hazardous material.
- Hazardous material sheets
are located on the materials room wall.
- Working on "mains" voltage
circuits with the equipment plugged into an a.c. outlet is never
O.K. in this class.
- All students should wash
their hands after an in-class activity.
- When cutting wire, the
cut end should be directed downward so the cut part falls to the floor
(to prevent the flying wire end from hurting someone).
- Knife blades like the
“hobby” knives used in class must be
covered anytime when not in use.
- Long hair is dangerous
around machinery and must be tied up and back.
- Loose clothing must be
fastened, and long sleeves rolled up before using rotating tools or
machinery (such as a handheld drill).
- Running, throwing objects
and other inappropriate activities are never allowed in class.
- Be attentive and focused
when using machine or hand tools. Don't get distracted.
- Do not distract or try
to "scare" anyone working with equipment in the classroom. Injury
- The only time when two
people are allowed to operate a soldering iron or other single tool
in the lab at the same time is when one of the two people is the instructor.
- Solder, solvents and other
cleaning materials should be used only when two people are present
(and instructor in the room) and in a well-ventilated area.
- Some classes require that
students complete a Participation
in a High Risk Class/Activity (PDF) form
to participate in some activities.
- Soldering is
never done in this class unless the person soldering has received
proper instruction on soldering and the device(s) to be soldered.
safety glasses or goggles MUST be worn while soldering.
- Never hold solder in your
mouth and never remove wire insulation ("strip" wire) with
- Never solder to a live
circuit because the soldering iron tip is usually grounded and because
you may get electrocuted.
- Avoid solder fumes and
work in a well-ventilated area.
- Passing a soldering iron
directly from one person to another is not allowed and is potentially
- Shaking excess solder
from a soldering iron tip or from the item soldered is potentially
very dangerous as well as messy.
- Always let the soldering
iron cool completely at the end of the activity before returning it.
- Wash your hands after
OF BREAKING THE SAFETY RULES
- Violation of the above
safety rules and/or disregard for potential danger and for safety
precautions may result in a substantial grade reduction and/or suspension
or revocation of the student's use of school equipment which may adversely
affect the semester grade and lead to failure.