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close this bookProtective Measures against Hazardous Contact Voltage - Course: Basic skills and knowledge of electrical engineering. Methodical guide for instructors (Institut für Berufliche Entwicklung, 13 p.)
close this folder2. Organizational Preparation
View the document(introduction...)
View the document2.1. Preparation of the Instruction about Industrial Health and Safety
View the document2.2. Preparation of the Teaching Aids
View the document2.3. Preparation of the Working Means
View the document2.4. Time Planning


In order to guarantee that the instructions and exercises go off smoothly, the training should be well organized.

This comprises the following steps:

2.1. Preparation of the Instruction about Industrial Health and Safety

Before starting the exercises, a brief instruction should be given about the proper use and handling of the working means and how to avoid accidents.

As a proof of these instructions on industrial health and safety standards it is recommended to keep a book in which all instructions on accident-free working and proper use and handling of working means are entered in brief outlines.

The trainees confirm by signature that they were taught.

The following hints should be included:

- Every work in and at electrical plants has to be carried out in dead condition.

- The dead condition has to be checked with the help of testing instruments.

- Make sure that the plant is not reconnected by other people.

- If test work is necessary in alive plants, there must be one supervisor to look after the person carrying out the work.

- All works in connection with protective measures have to be carried out especially carefully.

- How to act after accidents caused by electric current.

Perhaps further hints on industrial health and safety are to be given according to the local requirements

2.2. Preparation of the Teaching Aids

For theoretical instruction, the trainees should have a writing place. Recommendable is a room equipped with blackboard, desks and electric connection.

If instruction takes place in the workshop or at the workshop place, clean pads should be put on the working tables for the trainees to put their papers on and take notes.

For demonstration purposes, a working place with the following equipment should be prepared:

On the necessity of taking protective measures:

Devices and parts of plants showing

- natural ageing
- destruction due to inexpert use
- premature ageing caused by the influence of moisture, chemical gas, vapours etc.

Illustrations showing people who had accidents caused by lacking or not functioning protective measures.

On potential equalization:

Here, the thing to do would be on the spot to show plants and parts of plants which require the measure of potential equalization or where potential equalization has already been created.

On the individual protective measures:

- Visual aids from which the mode of functioning can be seen.
- Equipment and accessories required to put the individual protective measures into practice.
- Also here, it would be convenient to show the respective plants on the spot.

The "Trainees' Handbook of Lessons" - protective measures against hazardous contact voltage has to be destributed according to the number of trainees.

Tables and switching diagrams are drawn on the blackboard before the lesson begins.

2.3. Preparation of the Working Means

As a theoretical basis of the exercises to be carried out, the "Instruction Examples for Practical Vocational Training/Protective Measures against Hazardous Contact Voltage" are to be distributed according to the number of trainees.

The material required for the exercises has to be prepared and laid out ready in sufficient quantity and/or number according to the instructions given in the "Instruction Examples...".

Each trainee must have his own place to work and exercise.

2.4. Time Planning

Starting from the total number of teaching hours, the times for the individual sections of this lesson should be planned separately.

Time planning is recommendable for the following sections of training:

- For the introduction into each respective working technique in the form of an instruction.
- For necessary demonstration.
- For task-related instructions in preparation of the exercises.
- For the carrying out of the exercises.
- For recapitulations and tests.

In addition, the following factors should be taken into consideration:

- The education level of the trainees.
- The training conditions.
- The future job of the trainees.
- The degree of difficulty of the respective section of training.

In each section of training, main emphasis should be put on the aquisition of abilities and skills by practical exercise.

If - in spite of good planning - it commes to waiting periods for the trainees, these should be filled by appropriate tasks such as the preparation of materials for exercises.