Understand the fundamentals
A familiar-looking machine can be hazardous
A miner combines electricity, hot surfaces and moving fans. The site adds noise, lifting tasks, traffic, cables and sometimes liquid systems under pressure. A hazard is anything that could cause harm. Risk is how likely that harm is and how serious it could be. It depends on your exposure (how you could come into contact with the hazard) and on the situation. Knowing the names of the parts does not make those risks go away.
Look before you touch. Warning signs include burn marks, smoke, unexpected liquid and unusual physical damage. Damaged insulation is another sign; insulation is the protective covering on wires. Watch for exposed conductors too. These are bare metal parts that can carry electricity. If you see any of these signs, the planned task changes. Do not move closer or handle the item just to get a better photo. Keep clear and report what you can see from a safe position.
See how it works
Plan how you will work
A site procedure is your site’s approved way to do a task. It says who may do the work, how to prepare and what protection is needed. Before you start, ask four questions. Where does my part of the work begin and end? How will the equipment be made safe? What help do I need? What conditions would stop the task? The site chooses protective equipment to match the actual hazards. Protective equipment does not replace controlling the hazard itself.
Heat, noise and lifting need the same attention as electricity. Follow the site’s hearing-protection program. Use its handling aids and follow its lifting rules. A small miner can still be heavy or awkward to carry. A surface can stay hot after the machine stops running.
Connect it to the field
Turn an observation into a useful report
Suppose you see liquid below a rack and an alarm on nearby equipment. Your first action is to keep clear and follow the site’s reporting process. From a safe position, record the location, the time and how far the liquid has spread. Do not decide the liquid is harmless. Do not reach through it to disconnect a cable.
In your report, keep “liquid visible beneath rack 4” separate from “coolant pipe failed.” The first is an observation: something you can see. The second is a conclusion, and a conclusion needs evidence. A clear report helps authorized personnel respond. It also means you do not take on a task beyond your training.
Terms used in this lesson
- Hazard
- Something with the potential to cause harm, such as damaged electrical insulation.
- Exposure
- How a person could come into contact with that hazard.
- Control
- A measure that removes the hazard or reduces exposure under the site’s procedures.
Optional references & further reading
Use current manufacturer instructions for the exact equipment and your site’s approved procedures. Course levels do not grant task authorization.