In this technical article, we will delve into the details of EN ISO 13848-1:2019, a crucial standard in the field of safety of machinery. This international standard provides guidelines for designers, manufacturers, and users of machinery to ensure the safe design and implementation of control systems.
Background and Scope
EN ISO 13848-1:2019 was developed by the International Organization for Standardization (ISO) in collaboration with the European Committee for Standardization (CEN). It supersedes the previous version, published in 2006, and takes into account advancements in technology and industry practices.
The scope of this standard is to define the performance level (PL) required for safety-related parts of control systems. It applies to all machinery that incorporates electrical, electronic, or programmable electronic systems (E/E/PES). This includes not only new machines but also modifications and retrofitting of existing machinery.
The primary objective of EN ISO 13848-1:2019 is to provide uniform requirements across industries, ensuring that machinery has adequate safety measures in place. Compliance with this standard helps protect personnel and prevent accidents that may result from failures or malfunctions of control systems.
Key Components
One of the key components of EN ISO 13848-1:2019 is the calculation of Performance Level (PL) based on the required risk reduction. The PL indicates the reliability and effectiveness of the control system in reducing risks. It considers factors such as number of channels, diagnostic coverage, and architectural constraints.
To determine the PL, engineers need to assess the severity of potential injuries, the probability of exposure to hazards, and the required risk reduction. They must also evaluate the characteristics of the control system, such as its hardware and software architecture, diagnostic coverage, and the behavior of the components under stress or failure conditions. Based on this evaluation, the PL is assigned, ranging from PL a (lowest) to PL e (highest).
Implementation and Compliance
EN ISO 13848-1:2019 provides a systematic approach for achieving the required PL. It emphasizes the importance of validation and verification during all stages of the machinery's lifecycle, including design, installation, operation, and maintenance.
Manufacturers are responsible for ensuring that the control systems integrated into their machinery comply with the standard's requirements. They must conduct risk assessments and document the necessary safety measures taken to achieve the specified PL. Furthermore, periodic inspections and audits should be performed to ensure ongoing compliance.
Users of machinery also play a vital role in maintaining safety. They should follow manufacturer's instructions, regularly inspect and maintain equipment, and report any malfunctions or anomalies promptly.
In conclusion, EN ISO 13848-1:2019 serves as a fundamental reference for engineers, manufacturers, and users of machinery. By adhering to its guidelines, stakeholders can enhance machine safety, minimize risks, and contribute to the well-being of workers across industries.
Nina She