The main objective of the course is to provide the main notions so that students acquire the ability to critically analyze complex situations relating to the safety of machines and work environments with a focus on electrical safety and related situations (Atex, electromagnetic fields, lightning risk, electrical fire).
The analysis of machines and work environments will be based on the knowledge acquired from the analysis of the main directives of the European community applicable to the safety of machines and work environments (machinery directive, low voltage, Atex, lifts, electromagnetic fields). Some notable electromechanical systems such as lift systems will be dealt with in depth and critical situations related to industrial machines will be presented with practical examples.
The main concepts related to electrical risk analysis as well as the training requirements of electrical workers will be addressed in the systems. In particular, in the analysis of the safety of electrical plants will be analyzed the risks deriving from overvoltages and overcurrents (for example: short circuits, lightning, electric arcs, electric fires), the analysis of the components that can be used for the protection of people and systems (automatic circuit breakers, differentials, magnetothermic, disconnectors, fuses, SPD, AFDD). The risk assessment in the workplace connected to electricity will be addressed with a focus on those deriving from electromagnetic fields and explosive environments.
The main schemes of electrical systems will be addressed, including SELV, PELV, FELV systems and the earthing system, as well as the main types of electrical system faults and measures for the protection of people and the systems themselves.
Information will be provided on the measurement of the main physical quantities and on the main checks of the electricity network. Power quality elements (e.g. voltage dips, variations in mains frequency, flicker, harmonics) and disturbances introduced into the network. Power factor correction.
All the topics addressed contribute to the acquisition of skills to be able to deal with the analysis of risks in the workplace related to the systems and equipments.
LEARNING OUTCOMES
At the end of the course, the student will be able to:
1. Know the machinery directive and other directives related to the safety of equipment and work environments
2. Know the main electromechanical systems (eg lifts)
3. know the main sources of electrical risk in the workplace and related to machines, the main faults in electrical systems, the dangers related to overvoltages and overcurrents for people and systems
4. know the main measures and devices used to protect against electrical risk, read the datasheet
5. know the checks and tests to be carried out for the purposes of electrical safety and the main elements of power quality and power factor correction and the disturbances that a company can put into the network
6. analyze and apply the directives of the European community addressed relating to the safety of machinery and industrial work environments
7. analyze machinery / equipment from the point of view of safety considering the studied directives
8. analyze work environments from the point of view of safety in the light of the studied directives
9. identify the main risks in the workplace relating to the topics addressed (electrical risk, lightning risk, Atex, electromagnetic fields)
10. identify the main solutions that contribute to electrical safety in the workplace (machines and systems) and systems
11. acquire a precise and adequate technical language to describe the topics addressed