Car Wash Cutting/Welding
Hazards
As I visit various car washes throughout the country, I’m
always surprised to see how many equipment rooms have cutting/welding
apparatus. Why am I surprised? Because there is an expertise that needs to be
present to safely operate this machinery that isn’t common at a car wash. I’m sure
it comes in handy when you need to cut a chain, repair the conveyor or remove
stubborn bolts. Some washes even use it to heat up equipment to help loosen
stubborn motor shafts. However, the convenience and versatility of this
equipment pales in comparison to the inherent danger to every employee at the
wash, especially if they haven’t had any training!
Even experienced technicians have a high risk factor when
using welding equipment in their daily activities. Case in point, not long ago
an employee was killed during a routine job. This tragedy occurred after the
employee failed to follow a few safety protocols, coupled with a small
equipment malfunction. Even with the machinery anomaly that occurred, he would
still be alive if he hadn’t ignored some basic safety precautions.
In preparation for this blog, I interviewed a few car wash
veterans about this topic. One is an individual that strictly works on repair
and maintenance of car wash equipment for several car wash locations. Even with
his years of experience, he informed me that he would never use welding
equipment in his work. The bottom line is that the best course of action at the
car wash is to sub out any welding jobs to a professional. This is what we call
“engineering the hazard out of the workplace”.
If that is not practical for your operations, be sure that
you only allow certified personnel
to perform any welding or torch cutting jobs.
The following are some basic safety rules that must be
strictly enforced to help prevent injury or death:
·
All employees cutting or welding must wear the
personal protective equipment (PPE) required for all these projects. Approved full face shields should be mandatory
during any job. It is also highly recommended that all workers be advised to
stay clear of any cutting or welding operations as exposure can adversely
affect eyesight and pose a physical threat to them. All clothing must be free
of any excess oil or grease as well.
·
Be certain that there is a fire extinguisher in
good working order available during the entire operation.
·
It is generally a good idea to blow out the line
on the acetylene tank by slowly opening the valve and closing it before
attaching the regulator. This will help ensure that there isn’t any grease, oil
or foreign matter that may have attached itself to the valve stem. It is
imperative that the line remains clear of any substances.
·
Never position yourself in front of the
regulator or the adjusting screw when opening the cylinder valve.
·
Regulators should always be removed from
cylinders before they are moved from one location to another unless they are in
a carrier specifically designed for transporting them.
·
Release the adjusting screw before opening the
cylinder valve. A cylinder valve shall
never be opened until the pressure adjustment screw on the regulator is fully
released.
·
Always open the cylinder valve slowly and
carefully.
·
Never compress acetylene above 15 PSI.
·
Be sure you always purge your oxygen and
acetylene lines before lighting the torch.
·
Never use grease or oil around the acetylene
tank or equipment. Be careful never to lay parts down where they can be exposed
to these substances.
·
Never use oxygen as a substitute for compressed
air.
·
Always keep heat, flame, and sparks away from
combustibles. Be aware of your
surroundings while you are using the torch, paying particular attention to any
oil soaked rags. Often, you will be using this equipment on the conveyor around
hydraulic lines. Be sure you have checked for any possible leaks in the lines
before attempting any repairs.
·
The contents of all cylinders must be properly
identified and marked. Be aware that there are no uniform color codes, so don’t
attempt to rely on that as a proper identification sign.
·
All cylinders must be stored in a secure, upright
position to prevent falling.
·
All empty cylinders must be marked accordingly
and stored with the valves tightly shut and with their caps on.
·
If you are using a cart to mount the acetylene
tank and oxygen tank together, a partition of steel, or other non-combustible
material, needs to be installed between the cylinders.
·
All cylinders should be provided with approved
pressure relief devices and instructions that they are never allowed to be
tampered with. No repairs of any kind are authorized for the cylinder or any
ancillary apparatus connected to it.
·
Care needs to be given to ensure that cylinders
are never stored were they might be exposed to excessive heat.
·
No employee that is not certified should be
authorized to operate this equipment at any time.
The following are some considerations when only a welding
job is warranted:
Basic Safety
Rules for Welding (many of these apply for the torches as well)
·
Never weld on or near anything that's been cleaned with a chlorinated
hydrocarbon like brake-cleaner. When
combined with UV light, chlorinated hydrocarbons can create phosgene gas, which
can cause serious injury or death. Ventilation will not prevent
poisoning.
·
Make
sure the weld area is free from all flammable materials such as flammable
liquids, paper, etc.
·
When
welding or cutting is done above or within 20 feet of combustible construction
or material, a “fire watch” shall be on hand to make use of fire extinguishing
equipment.
·
To
prevent electrocution be sure there are no puddles of water on the floor, make
sure the welder is dry.
·
Welded
material will remain hot for several minutes after it is welded, be aware to
prevent burns.
·
Ensure
you have proper ventilation to help reduce fumes and gases from the welding
process.
·
Remove
any assembled parts from the component being welded that may become warped or
otherwise damaged by the welding process.
·
Proper
Clothing – dark clothing that will not reflect the light, hearing protection so
sparks and metal fragments do not enter the ear canal, heavy leather gloves and
leather shoes sparks will not burn through.
·
Consider
using a respirator when welding in any enclosed areas where fumes may be a
problem.
Dangers in not understanding the principals
of welding
·
No
matter what type of welding you are doing you must make sure you are getting
the proper heat and penetration of the weld to do the job right. A faulty weld
can become fatal or cause further damage to your equipment.
·
Rushing
a welding procedure will give you a cold weld with little or no penetration,
resulting in a weak weld that could fail.
·
Properly
cleaning the area prior to any welding has to be the first step you take. You
need to get rid of any paint, rust, dirt, or any other coatings the metal may
have on them. You do not want any of these impurities to enter into your weld
and these items can also effect the penetration you get.
·
Cleaning
the surface can be accomplished using an angle grinder.
Although not advisable, it is easy to see why welding and
cutting processes have become more apparent at car wash facilities. These
processes offer a quick and effective way to quickly complete some necessary
tasks. However, as with any tool, if not used properly it can become a deadly
process for your employees. You must have proper training and safety processes in
place if you plan on using Cutting/Welding equipment. It is essential that only
trained staff have access to this equipment and that they follow a strict set
of safety precautions with every use. Their life may depend on it!
If you haven’t assigned a certified employee to be
responsible for welding and cutting, do it now. If you do not have any
certified staff members, find out where your employee can become trained and
certified to use this equipment and set up a class today. Be certain they are
aware of the dangers associated with this work and make it clear to all other
employees that this equipment is off limits to them. Similarly, anyone
assisting in this work should have some training on safety and operations
associated with the equipment they will be using. Again, if the job can be
delayed, I always recommend that you sub out any welding and cutting jobs to a
professional welder. Granted, this is not always the quickest way to get the
job done, however, it is always the safest.
Two key components to safety are awareness and action.
Please identify these risks to your employees and take the necessary steps to
ensure that everyone at your car wash is safe. Act now!
P.S. An OSHA reminder, due to the adoption of last year’s new OSHA reporting regulations,
please note that your “Right to Know” posters have changed to comply with the
new rules. Be sure that you order the newest update and post it in a
conspicuous area available to all employees!
Remember, a safe wash
protects people and profits!!!