Confusing a live equipment for a dead one is one of the major reasons that can result in an electrical accident. It is essential for an organization to train their workers properly to take appropriate precautions while operating machinery. Although, it is also the responsibility of a worker to work with extreme caution and abstain from hazardous situations as much as possible.
In this section, we will learn about the actions that need to be performed by a worker.
Before carrying out any task, make sure that the equipment is 100% dead and is in no condition to get energized at any stage of work.
For proper caution, it is ideal to write down all the measures that you are going to take, on a control sheet.
Reanalysis your written instructions, and if possible, you can discuss this with your supervisor or fellow workers.
Always stick with the work instruction provided to you.
Using a well-rated instrument is necessary. It is recommended that only good quality, insulated tools, probes, and prods are used.
Working in the sequence is the key to a safe operation especially the switching sequences. Make sure you close the isolator first and then close the associated circuit breaker.
While testing equipment, it is vital that you create a spacious exclusion area.
While working in the field, it is your life that is at stake. So, you must take appropriate cautions while working. Before taking any risk, it is always recommended that you think of the repercussion and take adequate measures.
If you found anyone is interfering with your way of work, then stop them politely. If a co-worker is working on your test area and following a wrong procedure, then insist him/her to follow the right method.
Before starting your work, make sure that you draft a proper layout of all your equipment in proper order. Following a correct order will not only help you to provide a comfortable working position but also offer you other advantages such as −
Provide ample of space to work
Provide ease of accessibility to your equipment
Allows you appropriate time and visibility to read your instructions
Provide adequate light
Provide you quick gateway during an emergency
In this section, we will see the different actions that should be avoided by a worker.
Never try to reclose a circuit during a fault, when it is still under process. A fault should always be located and then it should either be removed or rectified. Until proper steps have been followed, do not do anything with the circuit.
Unless the motor load has been disconnected, do not try to open the supply of the alternator set.
If the primary winding is capable of allowing current flow through it, then never try to open-circuit the secondary winding. Also never, use the secondary winding open-circuit as an energizer for primary winding.
Before working on a circuit make sure, it is entirely dead or has been discarded by an authorized worker. Until then, it is better to maintain your distance from it.
While using test equipment, never try to interact with any safety devices as it is quite unsafe.
While running a zdc machine, it is crucial to make sure you arrange an armature and open the field circuit at the same time. Without proper provisions, do not ever attempt to run a DC machine. However, you can try it with caution only if you secure the circuit breaker in the field circuit.
While using test equipment never alter, any permanent connects and even if you do, make sure you consult correctly with your supervisor. If you modify test equipment, make sure you label it with block letter. After using the equipment, replace the connection to its original position unless your supervisor has asked you not to do it.
Never use damage equipment or leave faulty equipment at a place that is accessible by others.
Even if your injuries seem light, always get yourself adequately checked by a trained expert.
1. What should not be done before operating a piece of equipment?
a) Alter the permanent connection
b) DE energize it adequately
Ans - A
2. While running a DC machine, you must
a) Open the field circuit
b) Close the field circuit
Ans - A
3. What should be written on a control sheet?
a) Proper measure you should take while carrying out a task
b) Technical specifications of equipment
Ans - A