If allowed to speak
to only one department at an aluminium plant. Our choice would be the
maintenance department. Why? Because no other department suffers more injuries
and fatalities than the maintenance department. Here is a recent example.
An automotive
parts plant had an incident involving an aluminum melting tank injuring two
workers one day during the week of February 23, 2020 in the Middle East .
In an automotive
spare parts factory a machine used to pour the materials from the aluminum
melting boiler to the (casting machine) molds failed. When the two workers entered
between the machine and the boiler to fix the malfunction, the machine suddenly
moved. As the workers trapped molten aluminum at 680 degrees of temperature fell
on them.
There were burns to the body of
workers trapped them. (The two workers) who were removed from their location
with the help of other workers, were taken to a nearby hospital. It was learned
that the injured workers condition was serious.
We pray that the
injured workers recover fully from their burns. From other news media articles
confirming the machine malfunctioning. The maintenance worker went between the
boiler (furnace) and casting machine. At which point in time there was movement.
It was either the furnace door or the casting machine. Either way the
maintenance worker was pinned against the boiler. The second worker came to his
rescue and during that time molten metal flowed onto them. One worker was
burned over his body while the second worker received burns to his right hand.
Regardless, we are thankful that both workers survived.
Prior to working on
any machinery. Lock out tag out/ safe isolation needs to be performed. The
Aluminium Plant Safety Blog recommends after instituting lockout tagout to
simply push the start button of the machine(s) that are being isolated. This
simple act will confirm that they are isolated.
In addition, we
strongly recommend that a customized device is placed in such a way that if all
lock out tag out methods fail the machine can not physically move.
That may sound
confusing. Let’s continue and hopefully clarify our recommendation. Regarding lock
out tag out of devices that have hydraulic cylinders. It is our experience where
the cylinder moved even though the lock out tag out procedures were carried out
properly. It is in these incidents that a customized bar, pipe, beam may have
prevented the injury, decapitation, fatality.
Please note that
there is not a universal device for every machine. Each machine would need it’s
own last ditch safety device. Each machine needs to be inspected and the
hazards identified to what could happen if the machine engages when a worker is
maintaining it. What to use? We like old crane rail. A proper inserted piece of
crane rail may stop a machine from engaging if all safety mechanisms fail.
We do caution that
if your plant institutes these “last ditch safety devices” we recommend that
enforcement of safety procedures be instituted before they are installed. The
last thing we would every want is for a maintenance worker to ignore current
safety procedures and install the ldsd and perform their procedure. That is why
we tell all plants that if they are going to institute this procedure they have
to confirm that their maintenance personnel are following all of the safety
protocol prior to installing the device(s).
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