Transcript HVAC

• SAFTY OBJECTIVES-------– Follow safe work practices and procedures
– Inspect safety equipment before use
– Proper use of safety equipment
Understanding these objectives will provide you
with the proper knowledge to take full
advantage of training, job, and career
Career Opportunities
• Union Positions, local
company jobs, and
continuing education
• Always a need for
skilled workers
• More training and
schooling means
more $$$$$$
Characteristics of a Professional
• Honesty- Be honest and
truthful in all dealings
• Integrity- Doing right
even when there is great
• Loyalty- Be worthy of
• Respect for othersdon’t take unfair
advantage of others
mistakes or difficulties
• Law abiding- Abide by
laws, rules, and
regulations relating to all
personal and business
• Commitment to
excellence- being wellinformed and prepared
and always trying to
increase proficiency
• Leadership- seek to be a
positive role model for
Accidents: Causes and Results
• What Causes
– Failure to
– Poor work habits
– Alcohol or drug abuse
– Intentional acts
– Unsafe acts
– Unsafe conditions
Failure to communicate
• Many accidents happen because of a lack
of communication
• Remember that different people,
companies, and job sites do things
• Never Assume----assuming that other
people know and will do what you think
they should know and do can cause
Specific signs and markings
• Information signs are blue
and provide general
• Safety signs give general
instructions and suggest
safety measures and are
green with white letters
• Caution signs tell
about potential
hazards and are
yellow and black
• Danger signs tell you
that there is an
immediate dangers
and are black, red,
and white
Material Safety Data Sheet (MSDS)
• A document that must accompany any
hazardous material. MSDS identifies the
substance and gives exposure limits,
physical and chemical make-up, the kind
of hazard it presents, precautions for safehandling and use, and specific control
• MSDS sheets from cleaning solutions to
batteries for cordless drills
Poor work habits
• Poor work habits can cause serious
– Procrastination, putting off repair, inspection,
or cleaning of equipment
Your safety is affected by not only by how you
do your work, but also by how you act on the
Alcohol and Drug abuse
• Alcohol and drug abuse
costs the construction
industry millions of dollars
a year in accidents, lost
time, and lost productivity
• You don’t have to be
using illegal drugs but
over the counter or
prescribed drugs cause
Lack of skill
• Be sure to learn and practice new skills
under careful supervision
• Do not use a tool unless you were properly
Intentional Acts
• When someone
purposely causes an
• Retaliation Acts
• Disgruntled
Unsafe acts
• Failing to use Personal Protective
Equipment (PPE)
• Using defective equipment
• Using equipment improperly
• Operating equipment at improper speeds
• Lifting improperly
• Failing to warn co-workers
Unsafe conditions
Congested workplace
Defective tools, equipment, or supplies
Fire and explosive hazards
Poor lighting
Radiation exposure
Inadequate warning systems
Reporting injuries and accidents,
and incidents
• You must report all on-the-job injuries,
accidents, or incidents, no matter how minor, to
your supervisor
• Four leading hazard groups
– Falls from elevations
– Struck by accidents involve unsafe operation
– Caught-in or caught between involve unsafe
– Electrical shock
Construction site job hazards
• This part of the unit
describes some of the
more common
hazards and explains
how to deal with them
• Always be aware of
the specific hazards
when you are working
Welding or use of torches
• Always keep oxygen
away from sources of
flame and
combustible materials
especially oil and
• When welding beware
of ultraviolet rays to
avoid flash burn
• Fuel hose is always
red w/ left handed
• Oxygen hose is green
w/right handed
• Be sure to check for
leaks, burns, worn
places, or other
• Attached to cylinder
heads to lower high
cylinder pressures to
required working
• Never mix
regulators—ex :
oxygen on acetylene
• Never use oil to
Confined Spaces
• Is a space that is large enough for a
person to work but has limited means of
entry or exit
• Many confined spaces contain hazardous
gases or fluids when equipment is in
– EX: HVAC-if refrigerant leaking, especially
lower to the ground, Plumbing-primer and
glue fumes
Working safely with job hazards
• Lockout/tagout
– This system safeguards workers from
hazardous energy while working on machines
or equipment
– The person who puts on the tag always has
the key
• Lock out and tag all electrical systems
• All questions about lockout\tagout contact
Barriers and Barricades
• Any opening in a wall
or floor is a hazard
and must be guarded
• Warning barricades
– Red means danger
– Yellow means caution
– Yellow and purple
mean radiation
Personal Protective Equipment
• PPE is designed to
protect people from injury
– Hard hat
– Safety glasses, goggles,
and face shields
– Harness
– Gloves
– Shoes
– Hearing protection
– Respiratory protection
• One fourth of all occupational happens
when workers are handling or moving
construction materials
– Move close to object, position feet in a
forward/backward stride
– Bend knees and lower body keeping back
– Put hands under object, slip one hand under
one corner and the other to tilt object
• Draw the object close to your body
• Lift slowly by straightening your legs and
keeping the objects weight as much as
possible over your legs
• Pick object up facing the direction you are
going to go
Aerial work
• There are many times when workers must
work in elevated locations
• When aerial work is done properly with
proper equipment, it is very safe
• In the following sections you will learn how
to use aerial equipment, inspect it, and
how to maintain it.
Ladders & Scaffolds
• Used to perform aerial
• When using ladder be
sure to use three point
• Be sure to use ladders
and scaffolds for their
intended use
• Be sure not to use
aluminum ladders when
working with electric
Extension Ladders
• A combination of 2
straight ladders
• When inspecting be
sure rope is not
frayed or has worn
• When using be sure
rungs are secured
and rope is secure
Step Ladders
• Self-supporting ladders
w/ two sections hinged at
the top
• When inspecting be sure
to pay attention to all the
• Be sure to have
spreaders completely
• Never stand on top step
or use braces as steps
• Two types; manufactured
and rolling
• When inspecting be sure
to check tags for the
scaffold for OSHA
– Green – meets
– Yellow – does not meet
– Red – scaffold in process
of being put up or taken
Hazard Communication Standard
• This is a rule that OSHA devised, also
know as the “Right to Know” requirement.
– Requires all contractors to educate their
employees about hazardous chemical they
might be exposed to
• Hazardous chemicals applies to paint,
concrete, and even wood dust
Fire Safety
• In order for a fire to
start, oxygen, fuel,
and heat must be
• Must know P.A.S.S.
Classes of Extinguishers
Electrical Safety
• Be sure that all equipment that is being
used is properly grounded
• Always inspect electrical tools
• Never use bare electrical wire
• Never use a metal hard hat
• Always use ground fault circuit interrupter
(GFCI) where moisture is present
If someone is shocked
• Immediately disconnect the circuit
• If unable to disconnect circuit use a nonconductive object to separate victim from
• Once victim is separated from circuit,
apply first aid and call ambulance