MACHINE AND ELECTROMECHANICAL SYSTEMS SECURITY
- Overview
- Assessment methods
- Learning objectives
- Contents
- Delivery method
- Teaching methods
- Contacts/Info
NO
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 equipment. The topics covered in the seminars are an integral part of the program and subject to examination.
The verification of learning is divided into three phases:
- Multiple choice quiz on the whole program (20 questions) that contribute to a maximum of 10/30.
- Oral examination relating to the entire program (including the topics covered in the seminars) which contribute to a maximum of 20/30.
- homeworks to be presented during the exam which will be awarded up to 3 points.
The quiz score will be added to the score acquired in the oral exam and in the homework. Passing the exam is linked to a minimum assessment of 18/30 (the homework does not contribute to exceeding the pass threshold).
To pass the exam, the student must demonstrate adequate theoretical knowledge of all the topics covered by demonstrating mastery of the topics and analytical skills. The oral exam will assess the ability to properly expose the knowledge acquired and the knowledge of specific technical terminology. The answers will positively evaluate the completeness and the synthesis in the presentation of the topics also using schemes.
AIM OF THE COURSE
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, equipment and work environments in which they operate, with a focus on electrical safety and related conditions (Atex, electromagnetic fields, lightning risk, electrical fire).
LEARNING OUTCOMES
At the end of the course, the student will be able to:
1. Know the machinery directive/regulation and other directives related to the safety of equipment and work environments;
2. analyze and apply the directives/regulations of the European community related to the safety of machineries and industrial work environments;
3. analyze machinery / equipment from the point of view of safety considering the studied directives/regulations;
4. Know the main electromechanical systems (e.g. lifts, analyzed industrial machineries/equipment);
5. know the main sources of risk related to the machines (mechanical and electrical risks, ATEX, physical agents, etc.);
6. identify the main risks in the workplace related to machineries (electrical risk, lightning risk, Atex, electromagnetic fields, confined places);
7. know the main measures and devices used to protect against electrical risk, lightning risk, Atex, and machineries safety, understanding a datasheet, know the checks and tests to be carried out for the purposes of electrical safety;
8. acquire a precise and adequate technical language to describe the topics addressed
The analysis of machines and work environments will be based on the knowledge acquired from the analysis of the main directives and regulations of the European community applicable to the safety of machines and work environments (machinery, 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.
With regard to the electrical safety of the machines, the risks deriving from overvoltages and overcurrents will be addressed (e.g. short circuits, lightning, electric arcs, electric fires), the analysis of the components that can be used for purpose to protect people and systems both on the machine and for powering the machine (automatic circuit breakers, differentials, magnetothermic, disconnectors, fuses, SPD, AFDD, the earthing system, SELV, PELV, FELV systems). The risks deriving from physical agents emitted by the machines (noise, electromagnetic fields, ROA, etc.) and those related to explosive atmospheres and confined spaces will be analyzed.
Information will be provided regarding the measurements of physical quantities, of physical agents and on the main checks of the electrical network.
Lastly, the issue of worker training will be addressed with a focus on safety at work and to the training requirements equipment workers.
THE SAFETY OF MACHINES AND ELECTROMECHANICAL INSTALLATIONS (32h)
• The European community and its regulations/directives
• Italian, European and world standards
• Machinery directive/regulations, lifts, low voltages, ATEX electromagnetic fields directives, electromagnetic compatibility, etc.
The safety of machineries and equipment
• Assessment of risks related to machines, physical agents (noise, vibration, ROA, electromagnetic fields, etc.), potentially explosive environments and confined places. Practical examples.
• Machine certification
•Examples of notable electromechanical systems (e.g. lifts)
•The role of worker training in machine safety
ELECTRICAL RISK OF MACHINERY AND SAFETY SYSTEMS (20 h)
• Overvoltages, overcurrents and components for protection. Short-circuits. Electric arc. Lightning. Criteria for protection from lightning and electric arcs. Electric fire ignition and short circuit.
• components for the protection of people and systems (automatic switches, differential switches, Thermal magnetic circuit breakers, switches, fuses, SPD, AFDD, SELV, PELV, FELV systems and the earth system)
• Requirements for PES, PAV, PEI (the electrical risk in the 81/2008 law and the working under voltage).
EVALUATION OF SAFETY BY MEASUREMENTS (8 h)
• Main concepts of measurements of physical quantities;
• Measurements of physical agents;
• Evaluation of the electromagnetic field at industrial and high frequency frequencies.
Seminars delivered by industry experts on various course topics (12 h)
Practical works related to the measurement of physical agents (electromagnetic fields and noise) and on machine safety (6h)
The course is based on frontal theoretical lessons
Classroom seminars held by experts from organizations and companies.
Technical visit related the course program.
Self-assessment questionnaires in e-learning with online modules and material provided by the teacher.
Homeworks must be delivered in advance in order to pass the exam related to:
1. the safety analysis of a machine chosen by the student
2. a directive chosen by the student
Students can meet with the professor in her office or in teams by previous email appointment (elisabetta.sieni@uninsubria.it)